Vehicle door handle, vehicle door assembly and vehicle

Abstract

The utility model discloses a vehicle door handle, a vehicle door assembly and a vehicle, the vehicle door handle comprises a handle body and a heating body, the heating body is an electric heating part, the working area of the heating body covers the handle body, and the heating body is fixedly arranged on a vehicle door and electrically connected with a vehicle door wire harness through a wire; the control switch is electrically connected with the heating body so as to be used for controlling the heating body to be turned on and turned off, when the control switch is turned on, the heating body generates heat in the working area of the heating body, the outer wall of the heating body is sleeved with a flame-retardant layer, the flame-retardant layer is used for conducting combustion protection on the heating body, and the outer wall of the flame-retardant layer is further sleeved with a protection layer. The heating body with the working area covering the handle body is arranged to heat the handle area, the heating body achieves convenient electric heating through the automobile door wire harness, the temperature of the automobile door handle can be kept comfortable in severe weather, and the situation that the automobile door cannot be opened due to the fact that the handle is frozen is avoided. Meanwhile, the periphery of the heating body is sleeved with the flame-retardant layer and the protective layer so that safety of the heating body in the working process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a door handle, a door assembly and a vehicle. Background Art

[0002] With the improvement of people's living standards, cars have gradually become a necessity for every family. At the same time, people's requirements for vehicle usage experience are constantly increasing. Door handles are the first step in contact between users and cars when using a car. Their comfort and sense of luxury have an important impact on the user's car experience. However, the door handles on the market currently generally have the problem of being inconvenient or even unusable due to the rain, snow and freezing environment in severe winter weather. For example, the common outward pull handles, which are continuously exposed to the rain and snow environment, will not only accumulate snow, causing the user's hands to freeze when opening the door, but also reduce the service life of the handles due to the influence of rain and snow. For hidden handles, there is a problem that the handles are frozen and cannot pop out in more severe rain and snow environments, causing trouble for users to open the door. The above problems will lead to greater resistance from consumers, and will also cause automobile manufacturers to face negative public opinion storms and suffer economic losses.

[0003] Therefore, how to ensure that the vehicle handles can be used smoothly and comfortably in harsh environments, thereby improving the passenger's vehicle experience, is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0004] The utility model provides a vehicle door handle, a vehicle door assembly and a vehicle, so as to ensure that the vehicle handle can be used smoothly and comfortably in a harsh environment, thereby improving the vehicle-using experience of passengers.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a vehicle door handle, comprising a handle body and a heating element, wherein the heating element is an electric heating component and its working area covers the handle body, and the heating element is fixedly arranged on the vehicle door and electrically connected to the vehicle door wiring harness through a wire;

[0007] A control switch is electrically connected to the heating element to control the opening and closing of the heating element. When the control switch is started, the heating element generates heat in its working area. The outer wall of the heating element is provided with a flame retardant layer, which is used to protect the heating element from burning. The outer wall of the flame retardant layer is also provided with a protective layer.

[0008] Optionally, in the above-mentioned door handle, the heating element is a constant temperature heating component.

[0009] Optionally, in the above-mentioned door handle, a temperature sensor for detecting the temperature of the heating element is arranged in the handle body, the temperature sensor is connected to the control switch signal, and when the temperature of the heating element exceeds a preset temperature range, the control switch is fed back to turn off the heating element, or,

[0010] The heating element is a thermistor material with a positive temperature coefficient, and the control switch remains normally open during operation.

[0011] Optionally, in the above-mentioned door handle, the heating element is a multi-layered ring structure and is arranged around the outer periphery of the handle body, or,

[0012] The heating element is embedded in a shell on the side of the handle body facing the vehicle door.

[0013] Optionally, the above-mentioned door handle also includes a feedback unit, which receives ambient temperature information and is connected to the control switch signal. When the ambient temperature is lower than a preset temperature value, the feedback unit starts the control switch, and the feedback unit can adjust the control switch to start after a first preset time or to turn off after a second preset time.

[0014] Optionally, in the above-mentioned door handle, the heating element is fixedly arranged on one side of the double-sided butyl rubber sheet, and the other side of the double-sided butyl rubber sheet is fixedly connected to the vehicle sheet metal structure.

[0015] Optionally, in the above-mentioned door handle, the protective layer includes a shielding protective cover and a flame retardant outer cover which are layered and fitted from the inside to the outside, the shielding protective cover is a cylindrical cover made of non-magnetic materials such as copper or aluminum, and the flame retardant outer cover is a cylindrical cover made of polyvinyl chloride or cross-linked polyethylene.

[0016] Optionally, in the above-mentioned door handle, the outer surface of the wire is a tinned copper wire, and the flame retardant layer is a cylindrical layer made of polyolefin material.

[0017] In a second aspect, the utility model further provides a vehicle door assembly, which is provided with a door handle as provided in any of the above embodiments, so that a user can open and close the vehicle door assembly.

[0018] In a third aspect, the utility model further provides a vehicle, at least one door of the vehicle uses the door assembly provided by the above embodiment.

[0019] It can be seen from the above technical scheme that the door handle, door assembly and vehicle provided by the utility model have a heating element fixedly arranged inside the door with a working area covering the handle body, and the heating element is adapted to its setting position and is connected to the door wiring harness through a wire. The opening and closing of the heating element is realized by a control switch, and the control switch can be remotely controlled by the user to start the heating function of the heating element in advance before getting on the vehicle, so that the handle body is in a warm state and suitable for the user to hold, so as to effectively prevent the door handle from freezing in bad weather such as rain and snow, thereby improving the user's experience. At the same time, the outer periphery of the heating element is successively provided with a flame retardant layer and a protective layer to ensure its safe operation during the heating use of the heating element. In extreme cases, it will only fail itself without affecting the safety of the entire vehicle and the user. The design of the above door handle takes into account practicality and economy, is suitable for various types of vehicles, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the utility model can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0021] Figure 1 It is a schematic diagram of the heating body structure in the door handle provided by the embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation of the door handle on the door assembly;

[0023] Figure 3 This is a schematic diagram of the assembly of the heating body and the handle body in another embodiment of the utility model;

[0024] Figure 4 for Figure 3 perspective drawing;

[0025] Figure 5 for Figure 3 Schematic diagram of the internal structure;

[0026] Figure 6 This is a schematic diagram of the structure of the surrounding sleeve of the heating element;

[0027] Among them, 10-handle body; 20-heating element; 30-wire; 40-control switch; 50-flame retardant layer; 610-shielding protective cover; 620-flame retardant outer cover; 70-double-sided butyl film; 80-door assembly. DETAILED DESCRIPTION

[0028] The vehicle's handles are the parts that come into direct contact with the vehicle when the user is using the vehicle, and will directly affect the user's experience of using the vehicle. In rainy, snowy and freezing conditions, the cold handles will affect the passengers' experience of using the vehicle. In more severe weather conditions, the handles may even freeze and become unable to be pulled open or pop out, causing trouble for the passengers' use of the vehicle.

[0029] In order to make the technical personnel in this field better understand the present invention, the embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary for the solutions of the utility model described in the claims.

[0030] See also Figure 1-6 The vehicle door handle provided by the embodiment of the utility model comprises a handle body 10 and a heating element 20, wherein the handle body 10 is used for a user to hold to open the vehicle door. Preferably, the handle body 10 is injection molded by low-temperature resistant and high-strength ABS plastic material, and its shape design conforms to ergonomics to ensure comfortable holding. The size and shape of the handle body 10 are designed according to the general standards of vehicle door handles to ensure the compatibility of the handle body 10 with the existing vehicle door system; the heating element 20 is an electric heating component, such as a resistance wire wound on a high-temperature resistant and high-insulation ceramic core rod, and the resistance wire can be made of nickel-chromium alloy material to have excellent Good heating efficiency and long-term stability. At the same time, the working area of ​​the heating element 20 covers the handle body 10. It should be noted that the working area of ​​the heating element 20 here specifically refers to the area where heat can be effectively transferred and temperature rise occurs when the heating element 20 is energized. The use of electric heating components can enable the heating element 20 to be conveniently electrically connected to the door wiring harness through the wire 30. The electrical connection here specifically refers to the wire 30 that allows current to pass between the heating element 20 and the power supply to enter the operating state, so that the heating element 20 only needs to be fixed inside the door by a fixing clamp, and can be connected through a shorter wire 30, thereby improving the degree of refined design of the door position.

[0031] The control switch 40 is electrically connected to the heating element 20 for controlling the opening and closing of the heating element 20. It should be noted that this electrical connection specifically refers to the signal connection between the control switch 40 and the heating element 20. When the control switch 40 is started, current passes through the heating element 20 to enter the working state and generate heat in its working area. The control switch 40 can be designed on the user's vehicle key or the vehicle-linked APP, so that the passenger can judge the time to start the heating element 20. At the same time, in order to ensure the safety of the operation of the heating element 20, the outer wall of the heating element 20 is provided with a flame retardant layer 50, and the outer wall of the flame retardant layer 50 is also provided with a protective layer. The flame retardant layer 50 is made of flame retardant material, such as glass fiber reinforced thermoplastic plastic, so as to effectively prevent the heating element 20 from overheating and causing a fire, and the protective layer protects the heating element 20 and the flame retardant layer 50 from collision and scratching, and prevents other structural components from damaging the heating element 20 and the flame retardant layer 50.

[0032] The vehicle door handle provided by the embodiment of the utility model has a heating element 20 fixedly arranged inside the vehicle door, whose working area covers the handle body 10, and the heating element 20 is adapted to its setting position and is conductively connected with the vehicle door wiring harness through the wire 30. The opening and closing of the heating element 20 is realized by the control switch 40. The control switch 40 can be remotely controlled by the user to start the heating function of the heating element 20 in advance before getting on the vehicle, so that the handle body 10 is in a warm state and suitable for the user to hold, so as to effectively prevent the vehicle door handle from freezing in bad weather such as rain and snow, thereby improving the user's experience. At the same time, the outer periphery of the heating element 20 is successively provided with a flame retardant layer 50 and a protective layer to ensure its safe operation during the heating use of the heating element 20. In extreme cases, it will only fail itself without affecting the safety of the entire vehicle and the user. The design of the above-mentioned vehicle door handle takes into account practicality and economy, is suitable for various types of vehicles, and has broad market prospects.

[0033] In order to further enhance the user experience, in some embodiments of the present invention, the heating element 20 is a constant temperature heating component, so as to maintain a certain temperature range when in working state, so as to avoid the problem that the heating element 20 does not heat the handle body 10 sufficiently and cannot solve the handle freezing problem, or the heating temperature is too high and causes the customer to get burned. The constant temperature working state of the heating element 20 can be achieved in a variety of ways, such as using electric heating wires, electric heating films, or thermistors to prepare the heating element 20. These materials can generate heat after being energized, and through proper insulation and heat dissipation design, ensure that the heating element 20 operates at a safe temperature, and provide sufficient heat to prevent the surface of the handle body 10 from freezing.

[0034] Specifically, in some embodiments of the utility model, a temperature sensor for detecting the temperature of the heating element 20 is provided in the handle body 10. The function of the temperature sensor is to monitor the working state of the heating element 20 in real time, specifically the temperature value of the heating element 20 in the working state, and at the same time, the temperature sensor is connected to the control switch 40 signal. The temperature sensor can be a thermocouple, thermistor or other type of temperature detection device. These sensors can convert temperature information into an electrical signal and transmit the signal to the control switch 40. The control switch 40 determines the working state of the heating element 20 based on the received temperature signal. If it is detected that the temperature of the heating element 20 exceeds the preset temperature range, the control switch 40 will automatically disconnect the power supply and turn off the heating element 20, thereby preventing overheating and possible safety risks.

[0035] It should be noted that the temperature sensor can also feedback a signal to the control switch 40 when it detects that the temperature of the heating element 20 is lower than the preset temperature range, so that the control switch 40 remains in the open state, or increases the heating power input to the heating element 20 to increase the heating rate of the heating element.

[0036] Based on the above embodiment, if the temperature of the heating element 20 exceeds the safe range due to some reason, such as voltage fluctuation or external interference, the temperature sensor will immediately send a signal to the control switch 40 to cut off the power supply and stop heating. At the same time, the intelligent controller can record this event and remind the user to perform inspection or maintenance when necessary.

[0037] In other embodiments of the present invention, the heating element 20 can adopt a thermosensitive material with a positive temperature coefficient, such as barium titanate (BaTiO3)-based materials, PTC thermistor ceramics or polymer PTC composite materials, etc., which utilizes the characteristics of the thermosensitive material, that is, when the temperature rises, the resistance value of the material also increases, thereby reducing the flow of current and realizing the function of self-regulation and protection. On this basis, the door handle can remain in an open state in bad weather and can automatically adjust the power output of the heating element 20, thereby maintaining a stable antifreeze effect.

[0038] Furthermore, the structure of the heating element 20 can be adaptively designed according to its use position. In some embodiments of the present invention, see Figure 1 and Figure 2The heating element 20 of the door handle can be designed as a multi-layer ring configuration and arranged around the outer periphery of the handle body 10 to heat the handle body 10 by circumferential annular heating. This design structure allows the heating element 20 to be evenly distributed around the handle, thereby providing a more extensive and consistent heating effect. In this way, each part of the handle body 10 can obtain appropriate heat to effectively prevent ice and snow accumulation. It should be noted that this type of heating element 20 structure is preferably suitable for hidden door handles with embedded structures.

[0039] In addition, it should be noted that the annular configuration of the heating element 20 helps to optimize the efficiency of heat energy transfer, which can reduce heat loss in space and ensure that heat is concentrated in the key area of ​​the handle. Its surrounding flat-pack structure can also make the heating element 20 integrated with the handle body 10 in appearance without affecting the overall aesthetics of the handle. At the same time, the annular configuration of the heating element 20 can be designed into a modular structure, which is easy to install and maintain. Each module can be replaced individually, which improves the maintainability and upgradeability of the product.

[0040] In other embodiments of the present invention, see Figure 3 , Figure 4 and Figure 5 The heating element 20 can also be embedded in the shell of the handle body 10 facing the door. This embedded design can protect the heating element 20 from direct influence of the external environment, such as rain, snow, etc., thereby extending its service life. At the same time, this installation method allows the heating element 20 to be closer to the user's hand when the user holds the handle, which can reduce heat loss and improve the heating efficiency of the heating element. It also helps to reduce the space occupied in the car, making the door handle more suitable for compact vehicles. It should be noted that this heating element 20 structure is preferably suitable for external pull-type handles.

[0041] In order to improve the intelligent design level of the door handle, the door handle is further integrated with a feedback unit. The feedback unit is used to receive ambient temperature information and is connected to the control switch 40 signal to automatically adjust the working state of the heating element 20 according to the change of ambient temperature. Specifically, when the ambient temperature is lower than the preset temperature value, the feedback unit will send a signal to the control switch 40 to start the heating element 20 to start heating. This automatic start mechanism ensures that the handle always remains usable in cold environments without the need for manual adjustment by the user, thereby enhancing the sense of luxury of the vehicle.

[0042] Furthermore, the feedback unit also has an intelligent adjustment function. Specifically, the feedback unit can adjust the control switch 40 to start after a first preset time, or to turn off the heating element 20 after starting the second preset time, so as to improve the energy-saving effect of the vehicle. At the same time, the user can customize the preset temperature threshold and the start and shutdown time according to his own needs in the vehicle system to meet personalized needs and avoid unnecessary energy consumption, while ensuring that the handle can be heated in time when needed.

[0043] The above structure and feedback design enable the door handle to not only provide effective antifreeze protection, but also intelligently adjust the working state according to environmental conditions, thereby improving the practicality and energy efficiency of the product, making the door handle an ideal accessory for vehicles in cold areas, providing users with a more comfortable and safer use experience.

[0044] The fixing of the heating element 20 inside the vehicle door can be achieved by a special clamp. In order to reduce the cost of the door handle, in some embodiments of the utility model, the door handle is fixed inside the vehicle door by a double-sided butyl film 70. Specifically, the heating element 20 is fixed on one side of the double-sided butyl film 70. The double-sided butyl film 70 is a material with good adhesion and weather resistance, which can ensure that the heating element 20 is firmly attached to the handle while providing waterproof and moisture-proof functions. The other side of the film is fixedly connected to the sheet metal structure of the vehicle. The above structure not only ensures the stability of the setting of the heating element 20, but also can withstand vibration and impact in daily use, thereby enhancing the durability of the door handle.

[0045] In order to further improve the safety of the heating element 20 during use, in some embodiments of the present invention, see Figure 6 The protective layer is a multi-layer structure that is layered and fitted from the inside out, and the protective layer includes at least a shielding protective sleeve 610 and a flame retardant outer sleeve 620. The shielding protective sleeve 610 is made of non-magnetic materials such as copper or aluminum and forms a cylindrical sleeve structure. The shielding protective sleeve 610 is sleeved on the outer periphery of the heating element 20 to protect the heating element 20 from external electromagnetic interference, and also plays a certain heat dissipation role. The external flame retardant outer sleeve 620 can be made of polyvinyl chloride or cross-linked polyethylene, etc., which is also a cylindrical sleeve configuration. The flame retardant outer sleeve 620 not only provides additional insulation protection, but also has flame retardant properties to ensure the safe use of the door handle under extreme conditions.

[0046] Furthermore, in the door handle provided in the embodiment of the utility model, the wire 30 is made of a copper wire with a tinned outer surface. The copper wire has good current transmission capability, and the tin plating layer can prevent the copper wire from oxidizing, thereby improving the durability and conductivity of the wire 30. At the same time, the flame retardant layer 50 is made of a polyolefin material to form a cylindrical layer wrapped around the outside of the wire 30. The flame retardant layer 50 of polyolefin material has good thermal stability, mechanical strength and electrical insulation performance. At the same time, in the event of a combustion accident, it will decompose carbon dioxide and water without producing obvious smoke and harmful gases.

[0047] In addition, an embodiment of the utility model further provides a vehicle door assembly 80, which is integrated with a vehicle door handle provided by any of the above-mentioned embodiments, so that the vehicle door assembly 80 is usable and comfortable in cold environments, and the user can easily open and close the door without worrying about the handle becoming difficult to operate due to ice or snow. Since the above-mentioned vehicle door handle has the above-mentioned technical effects, the above-mentioned vehicle door assembly 80 also has the corresponding effects, which will not be repeated here.

[0048] Some embodiments of the utility model also disclose a vehicle, at least one door of the vehicle uses the door assembly 80 provided in the above embodiment, so as to be suitable for smooth opening and closing of the door in cold areas. Since the above door assembly 80 has the above effects, the above vehicle also has corresponding effects, which will not be repeated here. It should be noted that the above vehicle can be a pure electric drive vehicle, a hybrid vehicle or a fuel vehicle, etc.

[0049] It should be noted that, for the convenience of description, only the parts related to the utility model are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the utility model can be combined with each other.

[0050] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0051] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. The scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but also should cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the above-mentioned utility model. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) to form a technical solution.

Claims

1. A vehicle door handle, characterized in that: It includes a handle body and a heating element, wherein the heating element is an electric heating component and its working area covers the handle body, and the heating element is fixedly arranged on the vehicle door and electrically connected to the vehicle door wiring harness through a wire; A control switch is electrically connected to the heating element to control the opening and closing of the heating element. When the control switch is started, the heating element generates heat in its working area. The outer wall of the heating element is provided with a flame retardant layer, which is used to protect the heating element from combustion, and the outer wall of the flame retardant layer is also provided with a protective layer.

2. The door handle according to claim 1, characterized in that: The heating element is a constant temperature heating component.

3. The vehicle door handle according to claim 2, characterized in that: The handle body is provided with a temperature sensor for detecting the temperature of the heating element. The temperature sensor is connected to the control switch signal and provides feedback to the control switch to turn off the heating element when the temperature of the heating element exceeds a preset temperature range, or, The heating element is a thermosensitive material with a positive temperature coefficient, and the control switch remains in a normally open state under operating conditions.

4. The vehicle door handle according to claim 1, characterized in that: The heating element is a multi-layered ring structure and is disposed around the outer periphery of the handle body, or, The heating element is embedded in a shell on a side of the handle body facing the vehicle door.

5. The vehicle door handle according to claim 1, characterized in that: It also includes a feedback unit, which receives ambient temperature information and is connected to the control switch signal. When the ambient temperature is lower than a preset temperature value, the feedback unit feeds back that the control switch is started, and the feedback unit can adjust the control switch to start after a first preset time or to shut down after a second preset time.

6. The vehicle door handle according to claim 1, characterized in that: The heating element is fixedly arranged on one side of the double-sided butyl rubber sheet, and the other side of the double-sided butyl rubber sheet is fixedly connected to the vehicle sheet metal structure.

7. The vehicle door handle according to claim 1, characterized in that: The protective layer comprises a shielding protective sleeve and a flame retardant outer sleeve which are layered and fitted from inside to outside. The shielding protective sleeve is a cylindrical sleeve made of copper or aluminum, and the flame retardant outer sleeve is a cylindrical sleeve made of polyvinyl chloride or cross-linked polyethylene.

8. The vehicle door handle according to claim 1, wherein: The conductor is a copper wire with a tinned outer surface, and the flame retardant layer is a cylindrical layer made of polyolefin material.

9. A vehicle door assembly, characterized in that: A vehicle door handle as described in any one of claims 1 to 8 is provided to allow a user to open and close the vehicle door assembly.

10. A vehicle, characterized in that: The door assembly according to claim 9 is used in at least one vehicle door.

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