Door protection plate, door assembly and vehicle
By installing mounting brackets on the door panel to fix the heating element, the problem of the back door being unable to open due to icing of the seals was solved, while also reducing the installation cost of the heating element.
Patent Information
- Application Number
- CN202520154548.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In low-temperature environments, the tailgate seals of cars are prone to freezing, making them unable to open, and existing heating components are costly.
Install mounting brackets on the door panel, embed the heating element, and secure the heating element with the mounting brackets to protect it from damage, while reducing costs.
It effectively melts frost on the seals, preventing the back door from being unable to open, reducing the risk of damage to the heating elements, and reducing modification costs.
Smart Images

Figure CN223764194U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle technology, and in particular to a door panel, a door assembly, and a vehicle. Background Technology
[0002] A car's tailgate, also known as a rear hatch or tailgate, is a movable body part located at the rear of the vehicle, used to protect occupants and store goods. It can open outwards to facilitate access to items or other operations.
[0003] In low-temperature environments, the area around the tailgate seal may freeze after rain, snow, or car wash, causing the seal to stick to the tailgate or car body. This can prevent the tailgate from opening, requiring the vehicle to be moved to room temperature to thaw, which is inconvenient for users. Forcibly opening the tailgate may damage the seal or the tailgate, increasing repair costs.
[0004] To avoid this situation, related technologies include a heating element on the tailgate to heat the area where the seal is located. To prevent damage to the heating element, it is embedded in a groove in the tailgate trim panel. This means that if the heating element is placed on the tailgate trim panel during tailgate manufacturing, the mold used for injection molding the tailgate trim panel needs to be replaced. Since different car models use different molds for processing tailgate trim panels, this significantly increases the cost of installing a heating element on the tailgate. Utility Model Content
[0005] The purpose of this utility model is to provide a door panel, door assembly, and vehicle to solve the problem of high cost of installing heating elements on the door while avoiding damage to the heating elements.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A door panel includes a panel body, a mounting component, and a heating component; the mounting component is connected to the panel body; the heating component is embedded in the mounting component and located at the edge of the panel body.
[0008] Optionally, the heating element is an electric heating element.
[0009] Optionally, the mounting component is made of soft rubber, which is injection molded to the protective plate body.
[0010] Optionally, the door panel further includes a temperature sensor and / or a humidity sensor, wherein the temperature sensor and the humidity sensor are disposed on the panel body.
[0011] Optionally, multiple heating elements are provided.
[0012] Optionally, the heating element is disposed around the edge of the protective plate body.
[0013] A door assembly, comprising a door body and a door guard panel as described in any of the above claims, wherein the door guard panel is fixedly connected to the door body.
[0014] Optionally, the mounting element abuts against the door body.
[0015] A vehicle includes a body, a seal, and a door assembly, the door assembly being mounted on the body and having an open state and a closed state, wherein when the door assembly is in the closed state, the seal is sandwiched between the body and the door assembly.
[0016] Optionally, the heating element is an electric heating element, and the electric heating element is connected to the vehicle's electrical system.
[0017] The beneficial effects of this utility model are:
[0018] This utility model proposes a door panel, door assembly, and vehicle with a heating element installed on the door panel. When the area where the seal is located is frozen and sticks together, the heating element activates to heat the area where the seal is located, melting the frost and preventing the door assembly from being unable to open. It also reduces the possibility of damage to the seal. The mounting component not only fixes the heating element but also protects it. Moreover, fixing the heating element to the panel body via the mounting component significantly reduces modification costs compared to embedding the heating element into the panel body. Attached Figure Description
[0019] Figure 1 This is a side view of the door assembly in an embodiment of this utility model;
[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 This is a front view of the door assembly in an embodiment of this utility model.
[0022] In the picture:
[0023] 1. Door body; 2. Door guard panel; 21. Guard panel body; 22. Mounting parts; 23. Heating parts. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0028] This utility model provides a door panel, a door assembly, and a vehicle. The vehicle includes a body, the aforementioned door assembly, and a seal. The door assembly is mounted on the vehicle body and has a closed state and an open state relative to the body. When the door assembly is closed, the seal is sandwiched between the door assembly and the body and elastically presses against the door assembly to form a seal between the door assembly and the body. It is understood that the seal can be located on either the door assembly or the vehicle body. The door assembly can be a rear door or a side door. Depending on the type of door assembly, its mounting position on the vehicle body varies. For example, if the door assembly is a rear door, it is mounted on the rear of the vehicle body. The door assembly includes a door guard plate 2 and a door body 1. The door body 1 is made of sheet metal to improve the structural strength of the door assembly. The door guard plate 2 is made of injection molded material and is fixed to the door body 1 by means of snap-fit connection, including but not limited to snap-fit connection. In order to prevent the seal from sticking in low temperature environment, the door guard plate 2 includes a guard plate body 21, a mounting part 22 and a heating part 23. The guard plate body 21 is fixed to the door body 1, the mounting part 22 is connected to the guard plate body 21, and the heating part 23 is embedded in the mounting part 22 to be fixed to the edge of the guard plate body 21 by the mounting part 22. The heating part 23 is used to heat the area where the seal is located.
[0029] The aforementioned door panel 2, door assembly, and vehicle are equipped with a heating element 23 on the panel body 21. When the seal is frozen and causes the door assembly and body to stick together, the heating element 23 activates to heat the area where the seal is located, melting the frost and preventing the door assembly from being unable to open. This also reduces the possibility of damage to the seal or the door assembly. The mounting element 22 not only fixes the heating element 23 but also protects it, reducing the possibility of damage or detachment from the panel body 21. Furthermore, the heating element 23 is connected to the panel body 21 via the mounting element 22, eliminating the need to re-mold the panel body 21 and significantly reducing the cost of adding the heating element 23 to the door assembly. It should also be emphasized that the mounting element 22 is located at the edge of the panel body 21, which not only reduces the size of the mounting element 22 but also effectively heats the area where the seal is located at the edge of the panel body 21.
[0030] When the door panel 2 vibrates during vehicle operation, it is prone to friction and noise between itself and the door body 1. In order to reduce noise and improve the service life of both the door panel 2 and the door body 1, in this embodiment, the mounting part 22 is made of soft rubber and abuts against the door body 1 to effectively buffer the vibration of the door panel 2. Specifically, the mounting part 22 is injection molded onto the panel body 21. The mounting part 22 can be made of rubber or plastic, and no specific limitation is made here.
[0031] To further enhance effective heating of the area where the seal is located, multiple heating elements 23 can be embedded within the mounting component 22. Typically, the seal used in vehicle doors is a sealing strip. Based on this, the heating elements 23 extend along the direction of the seal, i.e., around the edge of the protective plate body 21, to achieve uniform heating of all areas where the seal is located.
[0032] In this embodiment, the heating element 23 is an electric heating element. When energized, the electric heating element generates heat to heat the sealing element. Specifically, the heating element 23 is a wire connected to the vehicle's electrical system. The wire is energized only after the vehicle is started, and its own resistance generates heat to melt frost. Of course, the electrical system includes a control button to turn the heating element 23 on and off as needed. In other embodiments, the heating element 23 may also use a wire with a separate control circuit, allowing the heating element 23 to be turned on and off by controlling the on / off state of the control circuit, without needing to start the vehicle.
[0033] In other embodiments, the heating element 23 is a water pipe connected to the vehicle's heat pump system, which supplies heat to the water pipe to heat the area where the seal is located.
[0034] Understandably, compared to water pipes, wires that can achieve the same heating effect have a smaller radius, which helps save space.
[0035] To enable the door assembly to be in both open and closed states, it is connected to the vehicle body via hinges. Depending on the connection point between the door assembly and the body, the door assembly can open in various ways, including upward, side-opening, and downward-opening. The hinge location also varies depending on the opening method. Clearly, both the electric heating element and the water pipe require connectors to connect to external equipment (such as the engine circuitry or heat pump system). When the door assembly switches from a closed to an open state, the heating element 23 moves relative to the vehicle body along with the door assembly. Furthermore, to minimize the movement of the connectors, both ends of the heating element 23 are positioned on the same side of the hinge.
[0036] Taking the heating element 23 as an electric heating element as an example, the connecting element is a connecting wire. One end of the electric heating element is set on one side of the length of the hinge and connected to one end of the connecting wire. The other end of the electric heating element goes around the edge of the guard plate body 21 and returns to the same side of the hinge to connect to the other end of the connecting wire.
[0037] To predict whether the heating element 23 needs to be activated, the door assembly also includes a temperature sensor. This temperature sensor can be located on the guard plate body 21, the door body 1, or other locations within the vehicle. The temperature sensor detects the ambient temperature, and a sensor located on the guard plate body 21 can more effectively monitor the temperature around the seals, thus more precisely determining whether to activate the heating element 23. When the heating element 23 is an electric heating element, the temperature sensor communicates with the control circuit or engine circuit that controls the heating element 23. For example, if the temperature sensor communicates with the engine circuit, the heating element 23 is activated when the vehicle is running and the temperature sensor detects that the ambient temperature or the temperature around the seals is below 0°C. When the heating element 23 is a water pipe connected to the heat pump system, the temperature sensor communicates with the control unit that controls the heat pump system.
[0038] In this embodiment, the protective plate body 21 has mounting holes, and the temperature sensor is embedded in the mounting holes. It is understood that the mounting holes can be formed on the protective plate body 21 by post-processing, without involving any modification to the mold during the injection molding of the protective plate body 21, and therefore will not significantly increase the modification cost.
[0039] To improve the effective utilization of the heating element 23 and prevent the heating element 23 from starting when the vehicle is not frozen, the door assembly also includes a humidity sensor installed on the guard plate body 21. The humidity sensor can detect the water vapor content in the outside air. If the detected water vapor content exceeds the threshold, it indicates that there has been recent rain, snow or car washing. Based on this, the heating element 23 will only start when the outside temperature detected by the temperature sensor exceeds the threshold.
[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A door guard characterized by The door guard plate (2) comprises: a guard plate body (21); a mounting member (22) connected to the guard plate body (21); a heating member (23) embedded in the mounting member (22) and located at the edge of the guard plate body (21).
2. The door guard of claim 1, wherein The heating member (23) is an electric heating member.
3. The door guard of claim 1, wherein, The mounting member (22) is soft glue which is injection molded and connected to the guard plate body (21).
4. Door guard according to any of claims 1-3, characterized in that The door guard plate (2) further comprises a temperature sensor and / or a humidity sensor which are arranged on the guard plate body (21).
5. A door guard according to any one of claims 1 to 3, wherein The heating member (23) is provided in plurality.
6. A door guard according to any one of claims 1 to 3, wherein The heating member (23) is arranged around the edge of the guard plate body (21).
7. A door assembly characterized by, A door assembly comprising a door body (1) and a door guard plate according to any one of claims 1-6, the door guard plate being fixedly connected to the door body (1).
8. The door assembly of claim 7, wherein, The mounting member (22) abuts against the door body (1).
9. Vehicle, characterized in that A door assembly comprising a door body, a sealing member and a door assembly according to claim 7 or 8, the door assembly being mounted on the door body, the door assembly having an open state and a closed state, the sealing member being sandwiched between the door body and the door assembly when the door assembly is in the closed state.
10. The vehicle of claim 9, wherein, The heating member (23) is an electric heating member, the electric heating member being connected to the circuit system of the vehicle.