Anti-electromagnetic interference structure of key circuit for intelligent door lock

Abstract

The utility model discloses an anti-electromagnetic interference structure of a keying circuit for an intelligent door lock, which comprises a main body assembly, a key circuit, a key circuit and a control circuit, the shielding assembly comprises a first clamping groove, a clamping block, a shielding shell, a first sealing plate, a second sealing plate, a connecting cover, a first opening, a second opening and a second clamping groove; the first clamping grooves are connected to the side, away from the key screen, of the panel in an injection molding mode, the clamping blocks are connected to the two ends of the shielding shell in an injection molding mode, the shielding shell is clamped in the first clamping grooves through the clamping blocks, the first sealing plate and the second sealing plate are fixed to an opening of the shielding shell through countersunk screws, and the connecting covers are connected to the connecting positions of the first sealing plate and the second sealing plate in an injection molding mode. The problems that an existing intelligent lock is prone to being interfered by external electromagnetic equipment such as a small black box, so that the intelligent lock loses efficacy and is unlocked by mistake, or due to electromagnetic interference, the intelligent lock breaks down, a key cannot be out of order, unlocking cannot be achieved, and user experience is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent locks, in particular to an anti-electromagnetic interference structure of a key circuit for an intelligent door lock. Background Art

[0002] Smart locks are an important part of modern home security. They combine the security of traditional mechanical locks with the convenience of modern electronic technology. Smart locks not only improve the security of the home, but also bring more convenience and intelligent experience to users. By reasonably selecting and using smart locks, users can enjoy a higher level of living safety and comfort.

[0003] Existing smart locks are easily interfered with by external electromagnetic devices such as "black boxes", causing the smart locks to fail and unlock by mistake, or malfunction due to electromagnetic interference, causing the buttons to fail to work and unable to unlock, affecting the user experience. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-electromagnetic interference structure for a key circuit for a smart door lock, so as to solve the problem raised in the above background technology that the existing smart locks are easily interfered with by external electromagnetic devices such as "black boxes", resulting in failure of the smart locks and incorrect unlocking, or malfunction of the smart locks due to electromagnetic interference, the keys cannot fail to unlock, and the user experience is affected.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is an anti-electromagnetic interference structure of a key circuit for an intelligent door lock, comprising:

[0007] A main body component, the main body component comprising a panel and a key screen;

[0008] The key screen is embedded in the upper section of the panel;

[0009] A shielding assembly, the shielding assembly comprising a first card slot, a card block, a shielding shell, a first sealing plate, a second sealing plate, a connecting cover, a first opening, a second opening, and a second card slot;

[0010] The first card slot is injection-molded and connected to a side of the panel away from the key screen, the card block is injection-molded and connected to both ends of the shielding shell, and the shielding shell is clamped in the first card slot through the card block, the first sealing plate and the second sealing plate are fixed at the opening of the shielding shell by countersunk screws, the connecting cover is injection-molded and connected to the connection between the first sealing plate and the second sealing plate, the first opening is opened at the connection between the first sealing plate and the second sealing plate, the second opening is opened on the side of the connecting cover, and the second card slot is injection-molded and connected to the shielding shell.

[0011] Furthermore, the inside of the shielding shell, the side of the first sealing plate, the side of the second sealing plate and the inner side of the connecting cover are all covered with tin foil.

[0012] Furthermore, the main body assembly also includes a housing and a key circuit board;

[0013] The shell is fixed to the side of the panel by countersunk screws and wrapped around the outside of the shielding shell, and the key circuit board is inserted into the second card slot.

[0014] Furthermore, the main body assembly also includes a connector, a chip and a communication line;

[0015] There are two connectors, one fixed on the side of the key circuit board and the other fixed on the back of the panel. The connector fixed on the back of the panel is electrically connected to the key screen, the chip is fixed in the middle of the side of the key circuit board, and the communication lines are plugged into the two connectors.

[0016] Further, it also includes a damage prevention component;

[0017] The anti-damage assembly includes a fixing plate, a spring column and a rubber block;

[0018] The fixing plate is fixed to a side of the panel away from the key screen and is located in the first slot. The spring column is fixed to the middle of the side of the fixing plate, and the rubber block is fixed to the movable end of the spring column.

[0019] Furthermore, the panel rear side connector is located at a side of the shielding shell, and a gap for installing a communication line is left between the shielding shell and the rear side of the panel.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. The utility model, through the shielding component, inserts one end of the communication line into the connector on the key circuit board, inserts the key circuit board into the second card slot in the shielding shell, pulls out the communication line, fixes the first sealing plate and the second sealing plate at the opening of the shielding shell, and simultaneously makes the communication line engage in the first opening and the second opening, and the other end of the communication line is inserted into the connector on the rear side of the panel, and finally inserts the card block on the shielding shell into the first card slot. This arrangement can wrap the key circuit board and the chip in the shielding shell, and cooperates with the tin foil on the inside and the bending effect formed by the first opening and the second opening to effectively resist electromagnetic interference.

[0022] 2. The utility model, through the anti-damage component, inserts the card block between the first card slot and the rubber block. Under the action of the spring column on the side of the fixed plate, the rubber block firmly presses the card block against the inner side of the first card slot, and at the same time keeps the shielding shell away from the rear connector of the panel. This arrangement facilitates the installation of communication lines and prevents wear of the communication lines at the rear connector of the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the position of the shielding component of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the anti-damage component of the utility model;

[0027] Figure 4 It is a schematic diagram of the interior of the shielding shell of the utility model;

[0028] Figure 5 It is a schematic diagram of the first sealing plate and the second sealing plate structure of the utility model.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 10. Shell; 11. Panel; 12. Key screen; 13. Connector; 14. Key circuit board; 15. Chip; 16. Communication line; 20. First card slot; 21. Card block; 22. Shielding shell; 23. First sealing plate; 24. Second sealing plate; 25. Connecting cover; 26. First opening; 27. Second opening; 28. Second card slot; 30. Fixing plate; 31. Spring column; 32. Rubber block. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] See also Figure 1-5 The present embodiment is an anti-electromagnetic interference structure of a key circuit for a smart door lock, comprising:

[0035] Main body component, the main body component includes a panel 11 and a key screen 12;

[0036] The key screen 12 is embedded in the upper section of the panel 11;

[0037] The panel 11 plays a fixing role, and the key screen 12 is a touch screen for inputting the unlocking password;

[0038] The shielding assembly includes a first card slot 20, a card block 21, a shielding shell 22, a first sealing plate 23, a second sealing plate 24, a connecting cover 25, a first opening 26, a second opening 27 and a second card slot 28;

[0039] The first card slot 20 is injection-molded and connected to a side of the panel 11 away from the key screen 12, the card block 21 is injection-molded and connected to both ends of the shielding shell 22, and the shielding shell 22 is clamped in the first card slot 20 through the card block 21, the first sealing plate 23 and the second sealing plate 24 are fixed at the opening of the shielding shell 22 by countersunk screws, the connecting cover 25 is respectively injection-molded and connected to the connection between the first sealing plate 23 and the second sealing plate 24, the first opening 26 is opened at the connection between the first sealing plate 23 and the second sealing plate 24, the second opening 27 is opened on the side of the connecting cover 25, and the second card slot 28 is injection-molded and connected to the shielding shell 22;

[0040] The first card slot 20 cooperates with the card block 21 to play a connecting role, the shielding shell 22, the first sealing plate 23, the second sealing plate 24 and the connecting cover 25 play a protective role, the first opening 26 and the second opening 27 form a curved route for fixing the communication line 16, and the second card slot 28 is used to fix the key circuit board 14;

[0041] The inside of the shielding shell 22, the side of the first sealing plate 23, the side of the second sealing plate 24 and the inside of the connecting cover 25 are all covered with tin foil;

[0042] Tin foil has good anti-electromagnetic interference effect;

[0043] The main assembly also includes a housing 10 and a key circuit board 14;

[0044] The housing 10 is fixed to the side of the panel 11 by countersunk screws and wrapped around the outside of the shielding shell 22. The key circuit board 14 is inserted into the second card slot 28.

[0045] The housing 10 plays a fixing role, and the key circuit board 14 controls the key screen 12;

[0046] The main assembly also includes a connector 13, a chip 15 and a communication line 16;

[0047] There are two connectors 13, one fixed on the side of the key circuit board 14, and the other fixed on the back of the panel 11. The connector 13 fixed on the back of the panel 11 is electrically connected to the key screen 12, the chip 15 is fixed in the middle of the side of the key circuit board 14, and the communication line 16 is plugged into the two connectors 13;

[0048] The connector 13 is used to connect to the communication line 16, which transmits signals. The chip 15 is responsible for storing, processing and transmitting information.

[0049] Working principle:

[0050] Insert one end of the communication line 16 into the connector 13 on the key circuit board 14, insert the key circuit board 14 into the second card slot 28 in the shielding shell 22, and pull out the communication line 16;

[0051] The first sealing plate 23 and the second sealing plate 24 are fixed at the opening of the shielding shell 22, and the communication line 16 is engaged in the first opening 26 and the second opening 27 of the connecting cover 25;

[0052] Then, the other end of the communication line 16 is inserted into the connector 13 at the rear side of the panel 11 , and finally, the card block 21 on the shielding shell 22 is inserted into the first card slot 20 .

[0053] In this step, the key circuit board 14 and the chip 15 can be wrapped in the shielding shell 22. With the inner tin foil and the bending effect formed by the first opening 26 and the second opening 27, an effective anti-electromagnetic interference effect can be achieved.

[0054] See also Figure 3 This embodiment is based on the above embodiment 1 and further includes:

[0055] The anti-damage component includes a fixing plate 30, a spring column 31 and a rubber block 32;

[0056] The fixing plate 30 is fixed to a side of the panel 11 away from the key screen 12 and is located in the first slot 20. The spring column 31 is fixed to the middle of the side of the fixing plate 30. The rubber block 32 is fixed to the movable end of the spring column 31.

[0057] The fixing plate 30 plays a connecting role, the spring column 31 has an extrusion function, and the rubber block 32 plays a connecting role;

[0058] The connector 13 at the rear side of the panel 11 is located at the side of the shielding shell 22 , and a gap for installing the communication line 16 is left between the shielding shell 22 and the rear side of the panel 11 .

[0059] Working principle:

[0060] Insert the card block 21 between the first card slot 20 and the rubber block 32 . Under the action of the spring column 31 on the side of the fixing plate 30 , the rubber block 32 firmly presses the card block 21 against the inner side of the first card slot 20 , and at the same time keeps the shielding shell 22 away from the rear connector 13 of the panel 11 .

[0061] This step facilitates the installation of the communication line 16 and can prevent the communication line 16 from being worn at the connector 13 on the rear side of the panel 11 .

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-electromagnetic interference structure of a key circuit for an intelligent door lock, characterized in that: include: A main body component, the main body component comprising a panel (11) and a key screen (12); The key screen (12) is embedded in the upper section of the panel (11); A shielding assembly, comprising a first card slot (20), a card block (21), a shielding shell (22), a first sealing plate (23), a second sealing plate (24), a connecting cover (25), a first opening (26), a second opening (27) and a second card slot (28); The first card slot (20) is injection-molded and connected to a side of the panel (11) away from the key screen (12); the card block (21) is injection-molded and connected to both ends of the shielding shell (22); and the shielding shell (22) is clamped in the first card slot (20) through the card block (21); the first sealing plate (23) and the second sealing plate (24) are fixed to the opening of the shielding shell (22) by countersunk screws; the connecting cover (25) is respectively injection-molded and connected to the connection between the first sealing plate (23) and the second sealing plate (24); the first opening (26) is opened at the connection between the first sealing plate (23) and the second sealing plate (24); the second opening (27) is opened on the side of the connecting cover (25); and the second card slot (28) is injection-molded and connected to the shielding shell (22).

2. The anti-electromagnetic interference structure of a key circuit for an intelligent door lock according to claim 1, characterized in that: The inside of the shielding shell (22), the side of the first sealing plate (23), the side of the second sealing plate (24) and the inside of the connecting cover (25) are all covered with tin foil.

3. The anti-electromagnetic interference structure of a key circuit for an intelligent door lock according to claim 1, characterized in that: The main body assembly also includes a housing (10) and a key circuit board (14); The housing (10) is fixed to the side of the panel (11) by countersunk screws and wrapped around the outside of the shielding shell (22); the key circuit board (14) is inserted into the second card slot (28).

4. The anti-electromagnetic interference structure of a key circuit for an intelligent door lock according to claim 3, characterized in that: The main body assembly also includes a connector (13), a chip (15) and a communication line (16); There are two connectors (13), one fixed on the side of the key circuit board (14), and the other fixed on the rear side of the panel (11). The connector (13) fixed on the rear side of the panel (11) is electrically connected to the key screen (12). The chip (15) is fixed on the middle part of the side of the key circuit board (14). The communication line (16) is plugged into the two connectors (13).

5. The anti-electromagnetic interference structure of a key circuit for an intelligent door lock according to claim 1, characterized in that: Also included are loss prevention components; The anti-damage component comprises a fixing plate (30), a spring column (31) and a rubber block (32); The fixing plate (30) is fixed to a side of the panel (11) away from the key screen (12) and is located in the first slot (20); the spring column (31) is fixed to the middle of the side of the fixing plate (30); and the rubber block (32) is fixed to the movable end of the spring column (31).

6. The anti-electromagnetic interference structure of a key circuit for an intelligent door lock according to claim 1, characterized in that: The rear connector (13) of the panel (11) is located on the side of the shielding shell (22), and a gap for installing a communication line (16) is left between the shielding shell (22) and the rear side of the panel (11).

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