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. The wireless power line passing device comprises a transmitting assembly and a receiving assembly. The transmitting assembly is used for being installed on a door frame and comprises a transmitting coil used for generating an alternating magnetic field. The receiving assembly is used for being installed on the door leaf and comprises a contact head, a receiving coil arranged on the contact head and an elastic piece connected with the contact head, and the receiving coil is controllably influenced by the alternating magnetic field to generate induction current. When the door leaf is closed, the transmitting assembly or the door frame abuts against the contact head, and the contact head compresses the elastic piece, so that the elastic piece has the trend of driving the contact head to move towards the transmitting assembly. The elastic piece can provide acting force for the contact head to move towards the transmitting assembly, so that the surface of the contact head can be basically attached to the transmitting assembly, the distance between the transmitting coil and the receiving coil is reduced, 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 supplied via 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, gaps can easily exist between the transmitting and receiving components, leading to greater heat loss and reducing the 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 for smart door locks, which solves the problem of low power conversion efficiency of the receiving component.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a wireless power supply for a smart door lock, comprising a transmitting component and a receiving component. The transmitting component is mounted on a door frame and includes a transmitting coil for generating an alternating magnetic field. The receiving component is mounted on a door leaf and includes a contact head, a receiving coil disposed on the contact head, and an elastic element connected to the contact head. The receiving coil can be controllably influenced by the alternating magnetic field to generate an induced current. When the door leaf is closed, the transmitting component or the door frame abuts against the contact head, compressing the elastic element, causing the elastic element to tend to drive the contact head toward the transmitting component.

[0007] In one or more embodiments of the present invention, the receiving component further includes a receiving housing, on which an installation opening is provided for the contact head to pass through; when the door is opened, the contact head extends at least partially from the installation opening.

[0008] In one or more embodiments of this utility model, the receiving housing has an accommodating cavity that communicates with the mounting port. The contact head includes a main body and a stop part. The main body passes through the mounting port, and the stop part is located in the accommodating cavity. When the door is opened, the stop part abuts against the inner wall of the receiving housing. When the door is closed, the part of the contact head outside the receiving housing enters the accommodating cavity through the mounting port.

[0009] In one or more embodiments of this utility model, a pin is provided on the inner wall of the receiving housing, and a socket for inserting the pin is provided on the stop portion.

[0010] In one or more embodiments of this utility model, the pin is provided with radially protruding ribs in the circumferential direction, and the periphery of the socket is provided with keyways for accommodating the ribs.

[0011] In one or more embodiments of this utility model, there are multiple pins and multiple sockets that correspond one-to-one with the multiple pins.

[0012] In one or more embodiments of this utility model, the elastic element is sleeved on the pin.

[0013] In one or more embodiments of this utility model, a stop is provided at the end of the pin away from the launching assembly, and the two ends of the elastic member respectively abut against the stop portion and the stop.

[0014] In one or more embodiments of the present invention, the receiving component further includes a battery electrically connected to the receiving coil.

[0015] In one or more embodiments of this utility model, the elastic element is selected as a spring.

[0016] Compared with the prior art, when the door is closed, the elastic element of this invention can provide a force to the contact head to move towards the transmitting component, so that the surface of the contact head can be basically in contact with the transmitting component, reducing the distance between the transmitting coil and the receiving coil and improving the power conversion efficiency of the receiving coil. Attached Figure Description

[0017] 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.

[0018] 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;

[0019] 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;

[0020] Figure 3 This is an exploded view of the receiving component in one embodiment of the present invention;

[0021] Figure 4 This is a partially exploded view of the receiving component in one embodiment of the present invention.

[0022] Explanation of main reference numerals: 1. Transmitting component, 2. Receiving component, 21. Contact head, 211. Main body, 212. Stop, 213. Socket, 214. Keyway, 22. Elastic element, 23. Receiving housing, 231. Mounting port, 232. Pin, 233. Rib, 24. Stop, 25. Battery, 3. Cable, 4. Door frame, 5. Door leaf, 6. Power supply. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] In one embodiment, reference is made to Figure 1As 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.

[0027] Specifically, refer to Figures 2 to 4 As shown, the transmitting component 1 includes a transmitting coil. In practical applications, when the power supply 6 provides AC power, the AC power can be directly supplied to the receiving coil, which generates an alternating magnetic field. When the power supply 6 provides DC power, the DC power needs to be converted into AC power by an inverter before being supplied to the receiving coil. The receiving component 2 includes a contact head 21, a receiving coil, and an elastic element 22. The receiving coil can generate an induced current under the influence of the alternating magnetic field. After the induced current is converted into DC power by the inverter, it is stored in the battery 25 electrically connected to the receiving coil. The DC power provided by the battery 25 is used to power the lock motor and other equipment. The receiving coil is mounted on the contact head 21, and the elastic element 22 is connected to the contact head 21. When the door 5 is closed, the contact head 21 faces the transmitting component 1, and the elastic element 22 is located on the side of the contact head 21 away from the transmitting component 1.

[0028] 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, with virtually no gap or only a small gap between them. At this time, the transmitting component 1 or the door frame 4 abuts against the contact head 21, causing the contact head 21 to compress the elastic element 22. The elastic force generated by the elastic element 22 gives it a tendency to drive the contact head 21 toward the transmitting component 1. Under the action of this elastic force, the surface of the contact head 21 can basically fit in contact with the transmitting component 1, reducing the distance between the transmitting coil and the receiving coil and improving the power conversion efficiency of the receiving coil.

[0029] Additionally, it should be noted that when a hole needs to be drilled in the door frame 4 to install the transmitter assembly 1, one side surface of the transmitter assembly 1 will be exposed. When the door leaf 5 is closed, the transmitter assembly 1 abuts against the contact head 21. When the transmitter assembly 1 is installed inside the door frame 4 and no hole is drilled in the door frame 4, the transmitter assembly 1 cannot directly contact the contact head 21. When the door leaf 5 is closed, the door frame 4 abuts against the contact head 21.

[0030] In one embodiment, reference is made to Figures 2 to 4As shown, the receiving component 2 also includes a receiving housing 23, which has an installation opening 231 for the contact head 21 to pass through. The size and shape of the installation opening 231 are adapted to the size and shape of the contact head 21, thereby limiting the movement direction of the contact head 21 through the installation opening 231, so that the contact head 21 moves approximately along the opening direction of the installation opening 231.

[0031] Furthermore, when the door 5 is opened, the contact head 21 extends at least partially from the mounting opening 231 under the drive of the elastic member 22, so that when the door 5 is closed, the launching assembly 1 can contact the contact head 21 to drive the contact head 21 to squeeze the elastic member 22.

[0032] In one embodiment, reference is made to Figure 4 As shown, the receiver housing 23 has an internal cavity that communicates with the mounting port 231. The contact head 21 includes a main body 211 and a stop 212. The stop 212 protrudes from the periphery of the main body 211, and the protrusion direction is approximately perpendicular to the opening direction of the mounting port 231. The receiving coil is mounted on the main body 211, which passes through the mounting port 231, and the stop 212 is located within the cavity.

[0033] When the door 5 is opened, the stop 212 abuts against the inner wall of the receiving housing 23 under the drive of the elastic member 22, preventing the contact head 21 from completely moving out of the receiving cavity, so that the main body 211 is always inside the mounting opening 231. During the closing process of the door 5, the part of the main body 211 outside the receiving housing 23 can be stably retracted back into the receiving cavity along the mounting opening 231.

[0034] Optionally, the contact head 21 includes two stops 212, which are distributed approximately vertically on the upper and lower sides of the main body 211.

[0035] It should be understood that the number and position of the stop portions 212 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 stop portions 212 may also be one or more. The distribution of the stop portions 212 is not limited to the vertical direction; if there is sufficient space, they may also be distributed horizontally or in a rectangular pattern.

[0036] In one embodiment, reference is made to Figure 4 As shown, a pin 232 is provided on the inner wall of the receiving housing 23. The extension direction of the pin 232 is approximately parallel to the opening direction of the mounting port 231. A socket 213 for inserting the pin 232 is provided on the stop portion 212 of the contact head 21. The limiting structure formed by the pin 232 and the socket 213 can further limit the movement direction of the contact head 21.

[0037] Furthermore, the elastic element 22 is sleeved on the pin 232, and the pin 232 restricts the compression direction and rebound direction of the elastic element 22, ensuring that the force provided by the elastic element 22 to the contact head 21 is always parallel to the opening direction of the mounting port 231.

[0038] Optionally, the elastic element 22 may be a spring or other component with a certain elastic deformation capability.

[0039] In one embodiment, reference is made to Figure 3 and Figure 4 As shown, the end of the pin 232 away from the launching assembly 1 is provided with a stop 24, and the two ends of the elastic member 22 respectively abut against the stop portion 212 and the stop 24 of the contact head 21, thereby restricting the position of the elastic member 22 and ensuring that the elastic member 22 can provide a stable force to the contact head 21.

[0040] Alternatively, the stop 24 is configured as a plate-like structure.

[0041] In one embodiment, reference is made to Figure 3 and Figure 4 As shown, the contact head 21 has multiple sockets 213, and the inner wall of the receiving housing 23 has multiple pins 232. The multiple sockets 213 and the multiple pins 232 are matched one-to-one.

[0042] Optionally, there are two sockets 213, two pins 232 and two elastic elements 22. The two sockets 213 are distributed roughly vertically on the upper and lower sides of the contact head 21. The positions of the two pins 232 are adapted to the positions of the two sockets 213. The two elastic elements 22 are fitted onto the two pins 232 one by one.

[0043] It should be understood that the quantity and position of the above-described socket 213, pin 232, and elastic element 22 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 socket 213, pin 232, and elastic element 22 may also be one or more. The distribution of socket 213, pin 232, and elastic element 22 is not limited to the vertical direction; if space is sufficient, they may also be distributed horizontally or in a rectangular arrangement.

[0044] In one embodiment, reference is made to Figure 4 As shown, the pin 232 is surrounded by a plurality of radially protruding ribs 233, and the periphery of the socket 213 is recessed with a plurality of keyways 214. The plurality of keyways 214 and the plurality of ribs 233 are matched one to one. After the ribs 233 are accommodated in the keyways 214, the two form a snap-fit ​​structure, reducing the probability of the contact head 21 slightly deflecting around the pin 232.

[0045] Optionally, a single pin 232 is provided with four protruding ribs 233, and a single socket 213 is provided with four keyways 214 that correspond one-to-one with the four protruding ribs 233.

[0046] 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.

[0047] 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 for generating an alternating magnetic field; a receiving assembly (2) for being mounted to a door leaf (5), the receiving assembly (2) comprising a contact head (21), a receiving coil arranged on the contact head (21), and an elastic member (22) connecting the contact head (21), the receiving coil being controllably affected by the alternating magnetic field to generate an induced current; when the door leaf (5) is closed, the transmitting assembly (1) or the door frame (4) abuts against the contact head (21), the contact head (21) compresses the elastic member (22), so that the elastic member (22) has a tendency to drive the contact head (21) to move towards the transmitting assembly (1).

2. The wireless power pass-through of a smart door lock according to claim 1, wherein, The receiving assembly (2) further comprises a receiving housing (23) having a mounting opening (231) for the contact head (21) to pass through; when the door leaf (5) is opened, the contact head (21) at least partially extends out of the mounting opening (231).

3. The wireless power pass-through of a smart door lock according to claim 2, wherein, The receiving housing (23) has an accommodating cavity in communication with the mounting opening (231), the contact head (21) comprises a main body portion (211) and a stop portion (212), the main body portion (211) passes through the mounting opening (231), and the stop portion (212) is located in the accommodating cavity; when the door leaf (5) is opened, the stop portion (212) abuts against an inner wall of the receiving housing (23); when the door leaf (5) is closed, the part of the contact head (21) outside the receiving housing (23) enters the accommodating cavity through the mounting opening (231).

4. The wireless power pass-through of a smart door lock according to claim 3, wherein, The inner wall of the receiving housing (23) is provided with a latch (232), and the stop portion (212) is provided with a latch opening (213) for the latch (232) to pass through.

5. The wireless power pass-through of a smart door lock according to claim 4, wherein, The latch (232) is provided with a radially protruding rib (233) in the circumferential direction, and the periphery of the latch opening (213) is recessed to form a key groove (214) for accommodating the rib (233).

6. The wireless power pass-through of a smart door lock according to claim 4, wherein, The latch (232) is provided with a plurality of latches, and the latch opening (213) is provided with a plurality of latch openings corresponding to the plurality of latches.

7. The wireless power pass-through of a smart door lock of claim 4, wherein, The elastic member (22) is sleeved on the latch (232).

8. The wireless power pass-through of a smart door lock according to claim 7, wherein, The end of the latch (232) away from the transmitting assembly (1) is provided with a stop member (24), and the two ends of the elastic member (22) respectively abut against the stop portion (212) and the stop member (24).

9. The wireless power pass-through of a smart door lock of claim 1, wherein, The receiving assembly (2) further comprises a battery (25) electrically connected to the receiving coil.

10. The wireless power pass-through of a smart door lock of claim 1, wherein, The elastic member (22) is a spring.

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