Wireless power line passing device of intelligent door lock

Abstract

The utility model discloses a wireless power line passing device of an intelligent door lock, which comprises a transmitting assembly and a receiving assembly, the transmitting assembly is used for being installed on a door frame, the transmitting assembly comprises a transmitting coil and a first magnet, and the transmitting coil is used for generating an alternating magnetic field. The receiving assembly is used for being installed on the door leaf and comprises a contact head, the contact head comprises a movable part capable of being controlled to move, the receiving assembly further comprises a receiving coil and a second magnet which are arranged on the movable part, and the receiving coil is controllably influenced by the alternating magnetic field to generate induced current. When the door leaf is closed, magnetic attraction force is generated between the first magnet and the second magnet, and the movable part is driven to move in the direction close to the transmitting coil. Magnetic attraction force is generated between the first magnet and the second magnet, the movable part is driven to move towards the transmitting coil, dislocation between the transmitting coil and the receiving coil is avoided, and the electric energy conversion efficiency of the receiving coil is improved.

Description

Technical Field

[0001] This utility model belongs to the field of smart door lock technology, specifically relating to a wireless power supply cable for smart door locks. Background Technology

[0002] Smart door locks are more intelligent in terms of user security, identification, and management, and are now widely used in private residences, offices, and other places.

[0003] Compared to traditional mechanical locks, smart locks require a power source, typically powered by a cable guide installed on the door leaf and frame. Traditional cable guides require holes to be drilled in the door leaf and frame for the cable to pass through, making installation cumbersome and prone to cable compression when the door is closed. Therefore, some smart locks now use wireless cable guides to transmit current between the door frame and door leaf. Wireless cable guides consist of a transmitting component that generates an induced magnetic field and a receiving component that generates an induced current. However, due to installation errors and other reasons, misalignment can easily occur between the transmitting and receiving components. The transmitting coil in the transmitting component cannot be aligned with the receiving coil in the receiving component, resulting in greater heat loss and reduced energy conversion efficiency of the receiving component.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a wireless power supply cable guide for smart door locks, which solves the problem that the transmitting coil of the cable guide cannot be aligned with the receiving coil.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a wireless power cable for a smart door lock. This wireless power cable includes a transmitting component and a receiving component. The transmitting component is mounted on the door frame and includes a transmitting coil and a first magnet. The transmitting coil generates an alternating magnetic field. The receiving component is mounted on the door leaf and includes a contact head with a controllably movable part. The receiving component also includes a receiving coil and a second magnet disposed on the movable part. The receiving coil is controllably induced to generate a current under the influence of the alternating magnetic field. When the door leaf is closed, a magnetic attraction force is generated between the first and second magnets, driving the movable part to move closer to the transmitting coil.

[0007] In one or more embodiments of this utility model, the contact head further includes a base disposed on the side of the movable part away from the transmitting component. When the door is closed, the magnetic attraction between the first magnet and the second magnet drives the movable part to move along the surface of the base.

[0008] In one or more embodiments of this utility model, a perforation is provided on the base, and an extension portion is formed on the movable part that passes through the perforation; when the door is closed, the extension portion can be controlled to move within the perforation under the action of magnetic attraction.

[0009] In one or more embodiments of this utility model, the movable part is provided with a plurality of extensions.

[0010] In one or more embodiments of this utility model, a plurality of extensions are spaced apart along the length direction of the perforation.

[0011] In one or more embodiments of this utility model, a stop is connected to one end of the extension away from the movable part, and the stop is in contact with the side of the base away from the transmitting component.

[0012] In one or more embodiments of this utility model, the stop portion is provided with an insertion hole, and the end of the extension portion away from the movable portion is provided with a pin inserted into the insertion hole.

[0013] In one or more embodiments of this utility model, there are multiple first magnets and multiple second magnets that cooperate with each other in a one-to-one correspondence with the multiple first magnets.

[0014] In one or more embodiments of this utility model, the magnetic poles of two adjacent first magnets are opposite, and the magnetic poles of two adjacent second magnets are opposite.

[0015] In one or more embodiments of this invention, a plurality of first magnets are distributed at circumferential intervals along the transmitting coil.

[0016] In one or more embodiments of this invention, a plurality of second magnets are distributed at circumferential intervals along the receiving coil.

[0017] Compared with the prior art, when the door is closed, the first magnet and the second magnet of this invention generate a magnetic attraction force, which drives the movable part to move towards the direction of the transmitting coil, so that the central axis of the transmitting coil and the central axis of the receiving coil are basically coincident, avoiding misalignment between the transmitting coil and the receiving coil and improving the power conversion efficiency of the receiving coil. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram showing the installation position of the wireless power supply cable guide for the smart door lock in one embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the wireless power supply cable of the smart door lock in one embodiment of the present invention;

[0021] Figure 3 This is an exploded view of the contact head in one embodiment of the present invention;

[0022] Figure 4 This is another exploded structural diagram of the contact head in one embodiment of the present invention;

[0023] Figure 5 This is an exploded structural diagram of the launching component and the contact head in one embodiment of the present invention.

[0024] Key reference numerals in the attached drawings: 1. Transmitting assembly; 11. Transmitting coil; 12. First magnet; 13. Transmitting housing; 131. First groove; 132. Second groove; 2. Receiving assembly; 21. Contact head; 211. Movable part; 2111. Third groove; 2112. Fourth groove; 212. Base; 2121. Perforation; 213. Extension; 2131. Pin; 214. Stop; 2141. Socket; 22. Receiving coil; 23. Second magnet; 3. Cable; 4. Door frame; 5. Door leaf; 6. Power supply. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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 this utility model.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In one embodiment, reference is made to Figure 1 As shown, this embodiment provides a wireless power cable for a smart door lock, which includes a transmitting component 1 and a receiving component 2. In practical applications, the transmitting component 1 and the receiving component 2 are generally installed near the pivotal connection between the door frame 4 and the door leaf 5, with the transmitting component 1 mounted on the door frame 4 and the receiving component 2 mounted on the door leaf 5. The transmitting component 1 is connected to a power source 6 via a cable 3, which includes, but is not limited to, mains power. After receiving power, the transmitting component 1 generates an alternating magnetic field, and the receiving component 2 generates an induced current under the influence of the alternating magnetic field.

[0029] Specifically, refer to Figures 2 to 5 As shown, the transmitting assembly 1 includes a transmitting coil 11 and a first magnet 12. The transmitting coil 11 is used to generate an alternating magnetic field. The receiving assembly 2 includes a contact head 21, which includes a controllably movable part 211. The receiving assembly 2 also includes a receiving coil 22 and a second magnet 23 disposed on the movable part 211. The receiving coil 22 can be controllably influenced by the alternating magnetic field to generate an induced current. A magnetic attraction force can be generated between the first magnet 12 and the second magnet 23.

[0030] According to the above structural design, when the door leaf 5 is closed, at the pivotal connection between the door frame 4 and the door leaf 5, the door leaf 5 and the door frame 4 are basically in contact with each other. The first magnet 12 and the second magnet 23 generate magnetic attraction, driving the movable part 211 to move towards the direction close to the transmitting coil 11, so that the central axis of the transmitting coil 11 and the central axis of the receiving coil 22 are basically coincident, avoiding misalignment between the transmitting coil 11 and the receiving coil 22, and improving the power conversion efficiency of the receiving coil 22.

[0031] In one embodiment, reference is made to Figures 4 to 5 As shown, the transmitting assembly 1 includes a transmitting housing 13, and the inner wall of the transmitting housing 13 is provided with a first groove 131 for accommodating the transmitting coil 11 and a second groove 132 for accommodating the first magnet 12.

[0032] Similarly, the movable part 211 has a third groove 2111 for accommodating the receiving coil 22 and a fourth groove 2112 for accommodating the second magnet 23 on the side away from the transmitting assembly 1.

[0033] In one embodiment, reference is made to Figures 3 to 5As shown, the contact head 21 also includes a base 212, which is located on the side of the movable part 211 away from the transmitting component 1. The contact head 21 and the base 212 are basically attached together. When the door 5 is closed, the magnetic attraction between the first magnet 12 and the second magnet 23 causes the base 212 to limit the range of movement of the contact head 21. The magnetic attraction drives the movable part 211 to move along the surface of the base 212.

[0034] Furthermore, a perforation 2121 is provided on the base 212, and an extension 213 is formed on the movable part 211 that passes through the perforation 2121. The extension 213 is generally configured as a columnar or column-like structure, and the extension 213 and the perforation 2121 together constitute a limiting structure. When the door 5 is closed, the extension 213 can only move within the space enclosed by the perforation 2121, further reducing the range of movement of the movable part 211 and preventing the movable part 211 from losing its magnetic attraction and moving too much when the door 5 is opened.

[0035] Considering the limited thickness of the door frame 4, the arc of the perforation 2121 in the height direction of the door frame 4 is relatively large in actual application. Therefore, the movable part 211 is provided with multiple extensions 213. The multiple extensions 213 are spaced apart along the length direction of the perforation 2121 (i.e. the height direction of the door frame 4) to further reduce the movement range of the extensions 213.

[0036] Optionally, two extensions 213 are provided.

[0037] It should be understood that the number and position of the extensions 213 described above are merely illustrative examples and do not constitute a limitation on the embodiments of this application. In addition to the above examples, the number of extensions 213 may also be one or more. The distribution of the extensions 213 is not limited to a vertical distribution; the specific distribution can be adaptively adjusted according to actual circumstances.

[0038] In one embodiment, reference is made to Figures 3 to 5 As shown, in order to make the movable part 211 and the base 212 fit tightly together, the end of the extension 213 away from the movable part 211 is connected to a stop part 214, and the stop part 214 fits against the side of the base 212 away from the launching assembly 1.

[0039] Furthermore, the stop portion 214 has an insertion hole 2141, and the end of the extension portion 213 away from the movable portion 211 is provided with a pin 2131. The pin 2131 is inserted into the insertion hole 2141, thereby connecting the stop portion 214 to the end of the extension portion 213.

[0040] Optionally, the pin 2131 and the socket 2141 are interference-fitted to better fix the position of the stop 214.

[0041] In addition, even if the extension 213 and the stop 214 are not connected by the friction or extrusion force generated between the pin 2131 and the socket 2141, the pin 2131 and the socket 2141 can still play a positioning role, thereby improving the connection efficiency between the extension 213 and the stop 214.

[0042] In one embodiment, reference is made to Figures 3 to 5 As shown, there are multiple first magnets 12 and second magnets 23, and the number of both is the same, so that the first magnets 12 and the second magnets 23 correspond to each other and cooperate with each other.

[0043] Furthermore, to prevent the movable part 211 from deflecting after being subjected to magnetic attraction, the magnetic poles of two adjacent first magnets 12 are opposite, and the magnetic poles of two adjacent second magnets 23 are opposite.

[0044] In one embodiment, reference is made to Figure 4 and Figure 5 As shown, a plurality of first magnets 12 are distributed at intervals along the circumference of the transmitting coil 11, and a plurality of second magnets 23 are distributed at intervals along the circumference of the receiving coil 22.

[0045] Optionally, four of each of the first magnet 12 and the second magnet 23 are provided, with the four first magnets 12 arranged in a roughly rectangular shape and the four second magnets 23 also arranged in a roughly rectangular shape.

[0046] It should be understood that the quantity and position of the first magnet 12 and the second magnet 23 described above are merely illustrative examples and do not constitute a limitation on the embodiments of this application. In addition to the above examples, the quantity of the first magnet 12 and the second magnet 23 may also be one or more. The distribution of the first magnet 12 and the second magnet 23 is not limited to a rectangular distribution; the specific distribution can be adaptively adjusted according to actual circumstances.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wireless power pass-through for a smart door lock, comprising: The wireless power supply wire pass-through device of the intelligent door lock comprises: a transmitting assembly (1) for being mounted to a door frame (4), the transmitting assembly (1) comprising a transmitting coil (11) for generating an alternating magnetic field and a first magnet (12); a receiving assembly (2) for being mounted to a door leaf (5), the receiving assembly (2) comprising a contact head (21) comprising a movable active part (211), the receiving assembly (2) further comprising a receiving coil (22) and a second magnet (23) arranged on the active part (211), the receiving coil (22) being controllably affected by the alternating magnetic field to generate an induced current; when the door leaf (5) is closed, a magnetic attraction force is generated between the first magnet (12) and the second magnet (23) to drive the active part (211) to move towards the transmitting coil (11).

2. The wireless power pass-through of a smart door lock according to claim 1, wherein, The contact head (21) further comprises a base (212) arranged on the active part (211) away from the transmitting assembly (1), when the door leaf (5) is closed, the magnetic attraction force between the first magnet (12) and the second magnet (23) drives the active part (211) to move along the surface of the base (212).

3. The wireless power pass-through of a smart door lock according to claim 2, wherein, The base (212) is provided with a through hole (2121), and the active part (211) is provided with an extension (213) penetrating through the through hole (2121); When the door leaf (5) is closed, the extension (213) is controllably moved in the through hole (2121) under the action of the magnetic attraction force.

4. The wireless power pass-through of a smart door lock according to claim 3, wherein, The active part (211) is provided with a plurality of extensions (213).

5. The wireless power pass-through of a smart door lock according to claim 4, wherein, The plurality of extensions (213) are arranged at intervals along the length direction of the through hole (2121).

6. The wireless power pass-through of a smart door lock according to claim 3, wherein, The extension (213) is connected with a stop portion (214) at an end away from the active part (211), and the stop portion (214) is in abutment with the side of the base (212) away from the transmitting assembly (1).

7. The wireless power pass-through of a smart door lock according to claim 6, wherein, The stop portion (214) is provided with a insertion hole (2141), and the end of the extension (213) away from the active part (211) is provided with a plug pin (2131) inserted into the insertion hole (2141).

8. The wireless power pass-through of a smart door lock of claim 1, wherein, The first magnet (12) is provided with a plurality of first magnets (12), and the second magnet (23) is provided with a plurality of second magnets (23) corresponding to the plurality of first magnets (12) one by one.

9. The wireless power pass-through of a smart door lock of claim 8, wherein, The magnetic poles of two adjacent first magnets (12) are opposite, and the magnetic poles of two adjacent second magnets (23) are opposite.

10. The wireless power pass-through of a smart door lock according to claim 8, wherein, The plurality of first magnets (12) are arranged at intervals along the circumference of the transmitting coil (11); and / or, The plurality of second magnets (23) are arranged at intervals along the circumference of the receiving coil (22).

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