Door body and door body assembly
By using wireless charging technology and inductive wireless power transmission, a continuous power supply is provided to the door equipment, solving the problems of unstable power supply from lithium batteries and easy interruption of wired charging, thus ensuring stable operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-03
AI Technical Summary
Most existing gates use built-in lithium batteries for power, which cannot provide continuous power. Furthermore, wired charging cables are easily broken, leading to unstable charging and affecting the normal use of the equipment.
Using wireless charging technology, the wireless charging transmitter powers the wireless charging receiver, enabling wireless power transmission. Combining strong and weak coupling inductive wireless power transmission methods, it ensures that the charging device is continuously powered under different conditions.
It enables uninterrupted power supply to charging devices, improves the continuity and stability of use, avoids the problem of wired charging cables being snapped, and enhances the reliability and flexibility of the equipment.
Smart Images

Figure CN224078968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of doors, and in particular to a door and door assembly. Background Technology
[0002] Currently, most doors use built-in lithium batteries as their primary power source. While lithium batteries offer some portability and energy storage capacity, in practical use, once the battery is depleted, it needs to be recharged immediately, as it cannot provide continuous power, causing considerable inconvenience to users.
[0003] Meanwhile, another common power supply method—wired charging—also has significant drawbacks. Exposed wired charging cables not only severely affect the overall aesthetics of the door, disrupting its design harmony and contradicting the modern pursuit of refined beauty in architecture, but also make them highly susceptible to being snapped by the door during frequent opening and closing. This not only damages the charging cable and affects the device's normal power supply but also increases maintenance and time costs. Each instance of breakage requires professional repair and replacement, impacting the door's operational efficiency. Utility Model Content
[0004] The purpose of this invention is to solve the technical problem that most existing doors use built-in lithium batteries, which cannot provide continuous power. This invention provides a door and door assembly that continuously supplies power to a wireless charging receiver via a wireless charging transmitter, thereby ensuring that the charging device is always powered, achieving uninterrupted power supply, and improving the continuity and stability of the charging device's use.
[0005] To solve the above-mentioned technical problems, an embodiment of this utility model discloses a door body, the door body comprising:
[0006] A wireless charging receiver, wherein the wireless charging receiver is spaced apart from an external wireless charging transmitter, and the wireless charging receiver is disposed on the side of the door body that is rotatably connected to the external door frame;
[0007] A charging device, wherein the wireless charging receiver is connected to the charging device and is used to charge the charging device.
[0008] Using the above technical solution, the wireless charging receiver obtains electrical energy from an external wireless charging transmitter and then transmits the electrical energy to the connected charging device, providing power support and ensuring the normal operation of the charging device. The physical principle underlying the wireless transmission of electrical energy between the wireless charging transmitter and the wireless charging receiver can be electromagnetic induction, magnetic resonance, or radio wave transmission.
[0009] In traditional door-mounted lithium battery solutions, the lithium battery's charge gradually decreases with continuous use of the charging device. When the battery is depleted, it needs to be recharged promptly, during which time the charging device stops working due to power shortage, failing to provide uninterrupted power. However, with this technology, the wireless charging transmitter continuously supplies power to the wireless charging receiver, ensuring the charging device is always powered, achieving uninterrupted power supply, improving the continuity and stability of charging device use, and effectively avoiding equipment downtime due to insufficient power.
[0010] Furthermore, this technical solution offers advantages over traditional wired charging methods. In traditional wired charging, the charging cable is often exposed, making it highly susceptible to being snapped by the door during frequent opening and closing. Once the cable is broken, the charging device cannot receive power, affecting its normal operation, and additional time and costs are required for repair and replacement. However, with wireless charging technology, the wireless transmitter continuously powers the wireless receiver, avoiding the problem of exposed wires being easily snapped by doors. This improves the reliability and stability of the charging system, ensuring the normal operation of the charging device.
[0011] According to another specific embodiment of the present invention, the charging device includes a lithium battery, the wireless charging receiver is connected to the lithium battery, and the lithium battery is used to store the electrical energy supplied by the wireless charging receiver.
[0012] By adopting the above technical solution, in the event of a power outage, the electrical energy stored in the lithium battery can provide timely power to other charging devices on the door, ensuring the normal operation of the door.
[0013] According to another specific embodiment of the present invention, the charging device includes:
[0014] A smart lock, wherein the smart lock is connected to the wireless charging receiver and the lithium battery respectively;
[0015] An indoor touchscreen is connected to the wireless charging receiver and the lithium battery, respectively.
[0016] According to another specific embodiment of the present invention, the wireless charging receiver includes:
[0017] A receiving coil is connected to the charging device and is used to be spaced apart from an external wireless charging transmitter.
[0018] A first capacitor, comprising a first pin and a second pin, wherein the first pin is connected to the receiving coil and the second pin is connected to the charging device.
[0019] This utility model also discloses a door assembly, the door assembly comprising:
[0020] The door body described in any of the preceding items;
[0021] A door frame, the door body being rotatably connected to the door frame, and the wireless charging receiver being located on the side where the door body and the door frame are rotatably connected;
[0022] A wireless charging transmitter is installed on a door frame, and the wireless charging transmitter and the wireless charging receiver are spaced apart. The wireless charging transmitter and the wireless charging receiver are wirelessly connected to achieve power transmission.
[0023] According to another specific embodiment of the present invention, the wireless charging transmitter and the wireless charging receiver transmit power in a strongly coupled inductive wireless power transmission manner, and the distance between the wireless charging transmitter and the wireless charging receiver is greater than 0 mm and less than 10 mm.
[0024] Using the above technical solution, if the wireless charging transmitter and receiver transmit power via a strongly coupled inductive wireless power transmission method, this method relies on the tight magnetic field coupling between the transmitter and receiver to achieve efficient power transfer. When the distance between them is too great, the magnetic field strength rapidly decreases with increasing distance, leading to weaker coupling and a significant reduction in transmission efficiency as a large amount of power cannot be effectively transmitted to the receiver. Therefore, the distance between them is set to be greater than 0mm and less than 10mm to ensure effective power transmission. In other words, if a strongly coupled inductive wireless power transmission method is used, the receiver will only begin charging when the door is closed.
[0025] According to another specific embodiment of the present invention, the wireless charging transmitter and the wireless charging receiver transmit power using a weakly coupled inductive wireless power transmission method.
[0026] Employing the aforementioned technical solution, the weakly coupled inductive wireless power transmission technology is designed to enhance adaptability to long-distance and non-precise alignment conditions. It achieves efficient power transmission by optimizing the structure of the wireless charging transmitter and receiver, increasing transmission power, and employing a more sensitive signal reception and processing mechanism. Even when the wireless charging transmitter and receiver are far apart, although the alternating magnetic field generated by the transmitter gradually weakens during propagation, the receiver can still capture a sufficiently strong magnetic field signal and convert it into electrical energy.
[0027] Therefore, regardless of whether the door is open or closed, the distance between the wireless charging transmitter and receiver will vary significantly with the opening and closing of the door. However, thanks to the insensitivity of distance to weakly coupled inductive wireless power transmission, the charging process is unaffected by the door's state and can maintain a stable charging status. This charging mode, unconstrained by the door's state, improves the convenience of charging and the flexibility of device use, effectively solving the problem of unstable charging caused by frequent door opening and closing. This ensures that charging devices mounted on the door, such as smart locks and touchscreens, can continuously receive power and guarantee their stable operation.
[0028] According to another specific embodiment of the present invention, the door assembly includes an external power supply and a transformer, one end of the transformer is connected to the external power supply, and the other end of the transformer is connected to the wireless charging transmitter.
[0029] Using the above technical solution, the external power supply is generally 220V AC, so a transformer is needed to convert it to a working voltage of 5.6V so that the wireless charging transmitter can be used normally.
[0030] According to another specific embodiment of the present invention, the wireless charging transmitter includes:
[0031] A transmitting coil is provided, which is spaced apart from the receiving coil of the wireless charging receiver. The transmitting coil and the receiving coil are wirelessly connected to each other to achieve power transmission.
[0032] The second capacitor includes a third pin and a fourth pin, wherein the third pin is connected to the transformer and the fourth pin is connected to the transmitting coil.
[0033] Using the above technical solution, energy coupling is achieved between the transmitting coil and the receiving coil via an alternating magnetic field. After receiving current from the transformer, the transmitting coil generates an alternating magnetic field around it. This magnetic field extends to the area where the receiving coil is located. The receiving coil, situated within this alternating magnetic field, converts the energy contained in the magnetic field into electrical energy through electromagnetic induction, thus completing the wireless energy transmission.
[0034] According to another specific embodiment of the present invention, the door assembly includes an automatic power-off module. The two ends of the automatic power-off module are respectively connected to a lithium battery and the wireless charging transmitter. The automatic power-off module is used to open after the lithium battery has stored all the electrical energy supplied by the wireless charging receiver.
[0035] Using the above technical solution, once the lithium battery has successfully completed the charging process by receiving power from the wireless charging receiver, the automatic power-off module is activated. In this state, the wireless charging receiver no longer supplies power to the lithium battery. This avoids unnecessary power loss caused by the wireless charging receiver continuing to supply power when the lithium battery is fully charged. Attached Figure Description
[0036] Figure 1 A schematic diagram of the door assembly according to an embodiment of the present invention is shown.
[0037] Figure 2 This invention illustrates an embodiment of the present invention. Figure 1 A magnified view of a portion of region A in the middle.
[0038] Figure 3 This diagram illustrates the connection of an external power supply, transformer, wireless charging receiver, and wireless charging transmitter according to an embodiment of the present invention.
[0039] Explanation of reference numerals in the attached figures
[0040] Door body 100;
[0041] Wireless charging receiver 110; receiving coil 111; first capacitor 112;
[0042] 120 Charging equipment; 121 Smart lock; 122 Indoor touch screen;
[0043] Door frame 200;
[0044] Wireless charging transmitter 300;
[0045] Transmitting coil 310; Second capacitor 320;
[0046] External power supply 400;
[0047] Transformer 500. Detailed Implementation
[0048] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0049] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0050] In the description of this embodiment, it should be noted that the terms "upper," "lower," "inner," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, 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 the utility model.
[0051] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0052] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.
[0053] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0054] refer to Figures 1 to 3This application provides a door assembly, which includes a door body 100, a door frame 200 and a wireless charging transmitter 300, with the door body 100 and the door frame 200 being rotatably connected.
[0055] The door 100 includes a wireless charging receiver 110 and a charging device 120. The wireless charging receiver 110 is spaced apart from the wireless charging transmitter 300, and is located on the side where the door 100 is rotatably connected to the door frame 200. The wireless charging receiver 110 is connected to the charging device 120 and is used to charge the charging device 120.
[0056] A wireless charging transmitter 300 is installed on the door frame 200. The wireless charging transmitter 300 is wirelessly connected to the wireless charging receiver 110 to achieve power transmission.
[0057] Using the above technical solution, the wireless charging receiver 110 obtains electrical energy from the wireless charging transmitter 300 and then transmits the electrical energy to the connected charging device 120, providing power support for the charging device 120 and ensuring its normal operation. The physical principle by which the wireless charging transmitter 300 and the wireless charging receiver 110 achieve wireless power transmission can be based on electromagnetic induction, magnetic resonance, or radio wave transmission.
[0058] In the traditional door 100 with built-in lithium battery solution, the lithium battery's power gradually decreases with continuous use of the charging device 120. When the lithium battery is depleted, it needs to be recharged promptly. During this time, the charging device 120 will stop working due to power shortage, failing to provide uninterrupted power. However, with this technical solution, the wireless charging transmitter 300 can continuously supply power to the wireless charging receiver 110, ensuring that the charging device 120 is always powered, achieving uninterrupted power supply, improving the continuity and stability of the charging device 120's use, and effectively avoiding equipment downtime due to insufficient power.
[0059] Furthermore, this technical solution also has advantages compared to traditional wired charging methods. In traditional wired charging, the charging cable is often exposed, and it is easily broken by the door during the frequent opening and closing of the door 100. Once the cable is broken, not only will the charging device 120 be unable to obtain power normally, affecting its normal use, but additional time and costs will also be required for repair and replacement. However, by using wireless charging technology, the wireless charging transmitter 300 can continuously supply power to the wireless charging receiver 110, avoiding the technical problem of exposed wires being easily broken by the door, improving the reliability and stability of the charging system, and ensuring the normal operation of the charging device 120.
[0060] In some possible implementations, refer to Figures 1 to 3 The charging device 120 includes a lithium battery (not shown), and a wireless charging receiver 110 is connected to the lithium battery. The lithium battery is used to store the electrical energy supplied by the wireless charging receiver 110.
[0061] By adopting the above technical solution, in the event of a power outage, the electrical energy stored in the lithium battery can provide timely power to other charging devices 120 on the door 100, ensuring the normal operation of the door 100.
[0062] In some possible implementations, refer to Figures 1 to 3 The charging device 120 includes a smart lock 121 and an indoor touchscreen 122. The smart lock 121 is connected to a wireless charging receiver 110 and a lithium battery, respectively. The indoor touchscreen 122 is also connected to the wireless charging receiver 110 and the lithium battery, respectively.
[0063] It should be noted that the specific structure of the charging device 120 is not specifically limited in this application embodiment. For example, in other possible implementations, the charging device 120 may be a video doorbell camera, an emergency call button, etc.
[0064] In some possible implementations, refer to Figures 1 to 3 The wireless charging receiver 110 includes a receiving coil 111 and a first capacitor 112. The receiving coil 111 is connected to the charging device 120 and is used to be spaced apart from the external wireless charging transmitter 300. The first capacitor 112 includes a first pin (not shown in the figure) and a second pin (not shown in the figure). The first pin is connected to the receiving coil 111, and the second pin is connected to the charging device 120.
[0065] In some possible implementations, refer to Figures 1 to 3 The wireless charging transmitter 300 and the wireless charging receiver 110 transmit power using a strongly coupled inductive wireless power transmission method. The distance between the wireless charging transmitter 300 and the wireless charging receiver 110 is greater than 0 mm and less than 10 mm.
[0066] Using the above technical solution, if the wireless charging transmitter 300 and the wireless charging receiver 110 transmit power using a strongly coupled inductive wireless power transmission method, this method relies on the tight magnetic field coupling between the wireless charging transmitter 300 and the wireless charging receiver 110 to achieve efficient power transmission. When the distance between them is too great, the magnetic field strength will rapidly decrease with increasing distance, resulting in a weaker coupling. A large amount of power cannot be effectively transmitted to the wireless charging receiver 110, significantly reducing transmission efficiency. Therefore, the distance between them is set to be greater than 0mm and less than 10mm to ensure effective power transmission. That is, if the strongly coupled inductive wireless power transmission method is used, the wireless charging receiver 110 will only charge when the door 100 is closed.
[0067] It should be noted that the present application does not impose specific limitations on the distance between the wireless charging transmitter 300 and the wireless charging receiver 110. For example, in other possible implementations, the distance between the wireless charging transmitter 300 and the wireless charging receiver 110 can be 1mm, 3.7mm, 9.8mm, etc.
[0068] In some possible implementations, refer to Figures 1 to 3 The wireless charging transmitter 300 and the wireless charging receiver 110 transmit power using a weakly coupled inductive wireless power transmission method.
[0069] The aforementioned technical solution, employing weakly coupled inductive wireless power transmission technology, focuses on enhancing its adaptability to long-distance and non-precise alignment conditions. It achieves efficient power transmission by optimizing the structure of the wireless charging transmitter 300 and the wireless charging receiver 110, increasing transmission power, and adopting a more sensitive signal reception and processing mechanism. Even when the wireless charging transmitter 300 and the wireless charging receiver 110 are far apart, although the alternating magnetic field generated by the wireless charging transmitter 300 gradually weakens during propagation, the wireless charging receiver 110 can still capture a sufficiently strong magnetic field signal and convert it into electrical energy.
[0070] Therefore, regardless of whether the door 100 is open or closed, the distance between the wireless charging transmitter 300 and the wireless charging receiver 110 will vary significantly with the opening and closing of the door 100. However, thanks to the insensitivity of distance to the weakly coupled inductive wireless power transmission, the charging process is unaffected by the state of the door 100 and can maintain a stable charging state. This charging mode, which is not constrained by the state of the door 100, improves the convenience of charging and the flexibility of device use, effectively solving the problem of unstable charging caused by frequent opening and closing of the door 100. This ensures that the charging devices 120 mounted on the door 100, such as the smart lock 121 and the touch screen, can continuously receive power and guarantee their stable operation.
[0071] In some possible implementations, refer to Figures 1 to 3 The door assembly includes an external power supply 400 and a transformer 500. One end of the transformer 500 is connected to the external power supply 400, and the other end of the transformer 500 is connected to the wireless charging transmitter 300.
[0072] Using the above technical solution, the external power supply 400 is generally 220V AC, so a transformer 500 is needed to convert it to a working voltage of 5.6V so that the wireless charging transmitter 300 can be used normally.
[0073] It should be noted that the operating voltage of the wireless charging transmitter 300 is not specifically limited in this embodiment. For example, in other possible implementations, the operating voltage of the wireless charging transmitter 300 may be 5.2V, 5.3V, 5.4V, etc.
[0074] In some possible implementations, refer to Figures 1 to 3 The wireless charging transmitter 300 includes a transmitting coil 310 and a second capacitor 320. The transmitting coil 310 is spaced apart from the receiving coil 111 of the wireless charging receiver 110, and the transmitting coil 310 and the receiving coil 111 are wirelessly connected to achieve power transmission. The second capacitor 320 includes a third pin (not shown in the figure) and a fourth pin (not shown in the figure). The third pin is connected to the transformer 500, and the fourth pin is connected to the transmitting coil 310.
[0075] Using the above technical solution, energy coupling is achieved between the transmitting coil 310 and the receiving coil 111 via an alternating magnetic field. After receiving current from the transformer 500, the transmitting coil 310 generates an alternating magnetic field around it. This magnetic field extends to the area where the receiving coil 111 is located. The receiving coil 111 is situated in this alternating magnetic field and, through electromagnetic induction, converts the energy contained in the magnetic field into electrical energy, thus completing the wireless energy transmission.
[0076] In some possible implementations, refer to Figures 1 to 3 The door assembly includes an automatic power-off module (not shown in the figure). The two ends of the automatic power-off module are connected to the lithium battery and the wireless charging transmitter 300, respectively. The automatic power-off module is used to open after the lithium battery has stored all the power supplied by the wireless charging receiver 110.
[0077] Using the above technical solution, once the lithium battery obtains power from the wireless charging receiver 110 and successfully completes the charging process, the automatic power-off module is immediately activated. In this state, the wireless charging receiver 110 no longer supplies power to the lithium battery. This avoids unnecessary power loss caused by the wireless charging receiver 110 continuing to supply power when the lithium battery is fully charged.
[0078] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.
Claims
1. A door body, characterized by, The door body comprises: A wireless charging receiver, which is arranged at a side of the door body and a door frame connected with each other in rotation, and is used for being arranged at a side of the door body and the door frame connected with each other in rotation; A charging device, which is connected with the wireless charging receiver, and is used for being charged by the wireless charging receiver.
2. The door of claim 1, wherein The charging device comprises a lithium battery, which is connected with the wireless charging receiver, and is used for storing the electric energy supplied by the wireless charging receiver.
3. The door of claim 2, wherein The charging device comprises: An intelligent lock, which is connected with the wireless charging receiver and the lithium battery respectively; An indoor touch screen, which is connected with the wireless charging receiver and the lithium battery respectively.
4. The door of claim 1, wherein The wireless charging receiver comprises: A receiving coil, which is connected with the charging device, and is used for being arranged at a side of a wireless charging transmitter in the outside world; A first capacitor, which comprises a first pin and a second pin, the first pin is connected with the receiving coil, and the second pin is connected with the charging device.
5. A door assembly, characterized by, The door body assembly comprises: The door body according to any one of claims 1 to 4; A door frame, which is connected with the door body in rotation, and the wireless charging receiver is arranged at a side of the door body and the door frame connected with each other in rotation; A wireless charging transmitter, which is arranged at the door frame, is arranged at a side of the wireless charging receiver, and is wirelessly connected with the wireless charging receiver to realize the transmission of electric energy.
6. The door assembly of claim 5, wherein, The wireless charging transmitter and the wireless charging receiver are wirelessly connected in a strong coupling inductive mode, and the distance between the wireless charging transmitter and the wireless charging receiver is greater than 0 mm and less than 10 mm.
7. The door assembly of claim 5, wherein, The wireless charging transmitter and the wireless charging receiver are wirelessly connected in a weak coupling inductive mode.
8. The door assembly of claim 5, wherein, The door body assembly comprises an external power supply and a transformer, one end of the transformer is connected with the external power supply, and the other end of the transformer is connected with the wireless charging transmitter.
9. The door assembly of claim 5, wherein, The wireless charging transmitter comprises: A transmitting coil, which is arranged at a side of the receiving coil of the wireless charging receiver, and is wirelessly connected with the receiving coil to realize the transmission of electric energy; A second capacitor, which comprises a third pin and a fourth pin, the third pin is connected with the transformer, and the fourth pin is connected with the transmitting coil.
10. The door assembly of claim 5, wherein, The door body assembly comprises an automatic power-off module, two ends of the automatic power-off module are connected with the lithium battery and the wireless charging transmitter respectively, and the automatic power-off module is used for being opened after the lithium battery stores the electric energy supplied by the wireless charging receiver.