Smart door lock and entry door
By installing a child lock component on the inner door lock of a smart door lock, the problem of children being able to open the door directly is solved, thus improving the security of the door lock.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-05
Smart Images
Figure CN224326131U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of lock technology, and in particular to a smart door lock and an entrance door. Background Technology
[0002] Compared to traditional mechanical door locks, smart door locks on front doors can be opened using passwords, fingerprints, or facial recognition, making the opening process much simpler.
[0003] In related technologies, smart door locks include an outer door lock, an inner door lock, and a lock cylinder assembly. The outer door lock and inner door lock are located on the outside and inside of the door, respectively, while the lock cylinder assembly is located inside the door. When the user is inside, they can unlock the lock cylinder assembly using the unlock button on the inner door lock.
[0004] However, when children are indoors, they can easily open the door using the unlock button, posing a safety hazard. Utility Model Content
[0005] This disclosure provides a smart lock and a smart door, which can solve the technical problems existing in related technologies. The technical solutions of the smart lock and the entrance door are as follows.
[0006] In a first aspect, this disclosure provides a smart door lock, which includes an outer door lock, an inner door lock, and a lock cylinder assembly. The outer door lock and the inner door lock are located on the outer side and the inner side of the door body, respectively, and the lock cylinder assembly is located inside the door body.
[0007] The inner door lock includes a housing, an unlock button, and a child lock assembly. The unlock button is fixed to the outside of the housing, and the child lock assembly is located on the top of the housing.
[0008] Both the unlock button and the child lock assembly are electrically connected to the lock cylinder assembly, and the child lock assembly switches the lock cylinder assembly between a first state and a second state.
[0009] In this context, the first state refers to pressing the unlock button, which unlocks the lock cylinder assembly; the second state refers to pressing the unlock button, which keeps the lock cylinder assembly locked.
[0010] In one possible implementation, the child lock component includes a button component and a switch component;
[0011] The top of the housing has a through hole, and the button assembly passes through the through hole;
[0012] The switch assembly is fixed inside the housing and electrically connected to the lock cylinder assembly. The button assembly is opposite to the switch assembly and is used to press the switch assembly to switch the first state and the second state of the lock cylinder assembly.
[0013] In one possible implementation, the button assembly includes a child lock button and a resilient element;
[0014] The switch assembly includes a PCB (Printed Circuit Board) and a micro switch. The micro switch is fixed to the PCB. The two ends of the elastic member abut against the child lock button and the PCB, respectively. The child lock button is opposite to the micro switch. The PCB is electrically connected to the lock cylinder assembly.
[0015] In one possible implementation, the top of the child lock button is flush with the top of the housing.
[0016] In one possible implementation, let the width of the child lock button along the first direction be L, then 8mm≤L≤15mm, where the first direction is the direction from the outer door lock to the inner door lock.
[0017] In one possible implementation, the outer wall of the child lock button has an annular protrusion;
[0018] The annular protrusion is located inside the housing and abuts against the inner wall of the housing facing the PCB.
[0019] In one possible implementation, let the width of the annular protrusion along the first direction be D, then 9mm ≤ D ≤ 16mm.
[0020] In one possible implementation, the elastic element is annular and surrounds the micro switch.
[0021] In one possible implementation, the housing includes a middle frame and a cover plate;
[0022] The middle frame is fixed to the door body, the cover plate is fixed to the side of the middle frame away from the door body, and the through hole is located at the top of the middle frame.
[0023] In a second aspect, this disclosure provides an entrance door, which includes an outer door lock, an inner door lock, a lock cylinder assembly, and a door body as described in any of the first aspects.
[0024] The technical solution provided in this disclosure includes at least the following beneficial effects:
[0025] This disclosure provides a smart door lock. When a user needs to unlock the door, a child lock component controls the lock cylinder assembly to a first state, allowing the user to unlock by pressing the unlock button. When a child is present indoors, the child lock component controls the lock cylinder assembly to a second state. Even if a child presses the unlock button, the lock cannot be opened. Furthermore, because the child lock component is located on the top of the housing, it is not easily seen or accessed by children, thus preventing children from controlling the child lock component themselves and further improving the security of the smart door lock.
[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:
[0028] Figure 1 This is an exploded view of an entrance door shown in an embodiment of this disclosure;
[0029] Figure 2 This is a schematic diagram of the structure of an inner door lock shown in an embodiment of this disclosure;
[0030] Figure 3 This is a schematic diagram of an interior door lock according to an embodiment of this disclosure;
[0031] Figure 4 This is an exploded view of an interior door lock shown in an embodiment of this disclosure;
[0032] Figure 5 This is a schematic diagram of the structure of a child lock component shown in an embodiment of this disclosure;
[0033] Figure 6 This is a partial cross-sectional view of an interior door lock shown in an embodiment of this disclosure.
[0034] Legend:
[0035] 100. External door lock;
[0036] 200. Inner door lock;
[0037] 300. Lock cylinder assembly;
[0038] 400. Door body;
[0039] 1. Shell; 10. Through hole; 11. Middle frame; 12. Cover plate;
[0040] 2. Unlock button; 20. Handle;
[0041] 3. Child lock assembly; 31. Button assembly; 311. Child lock button; 311a. Annular protrusion; 312. Elastic element; 32. Switch assembly; 321. PCB; 322. Micro switch.
[0042] 4. Emergency knob.
[0043] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.
[0045] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0046] Compared to traditional mechanical door locks, smart door locks on front doors can be opened using passwords, fingerprints, or facial recognition, making the opening process much simpler.
[0047] In related technologies, smart door locks include an outer door lock, an inner door lock, and a lock cylinder assembly. The outer door lock and inner door lock are located on the outside and inside of the door, respectively, while the lock cylinder assembly is located inside the door. When the user is inside, they can unlock the lock cylinder assembly using the unlock button on the inner door lock.
[0048] However, when children are indoors, they can easily open the door using the unlock button, posing a safety hazard.
[0049] In view of the above-mentioned technical problems, embodiments of this disclosure provide a smart door lock, such as... Figures 1-3 As shown, the smart door lock includes an outer door lock 100, an inner door lock 200, and a lock cylinder assembly 300. The outer door lock 100 and the inner door lock 200 are located on the outer and inner sides of the door body 400, respectively, while the lock cylinder assembly 300 is located inside the door body 400. The inner door lock 200 includes a housing 1, an unlock button 2, and a child lock assembly 3. The unlock button 2 is fixed to the outside of the housing 1, and the child lock assembly 3 is located on the top of the housing 1. Both the unlock button 2 and the child lock assembly 3 are electrically connected to the lock cylinder assembly 300. The child lock assembly 3 switches the lock cylinder assembly 300 between a first state and a second state. The first state refers to pressing the unlock button 2, which unlocks the lock cylinder assembly 300. The second state refers to pressing the unlock button 2, which keeps the lock cylinder assembly 300 locked.
[0050] The inner door lock 200 may have a handle 20 on its housing 1, and the unlocking button 2 may be located on the handle 20.
[0051] The technical solution provided in this disclosure allows the lock cylinder assembly 300 to be in a first state when a user needs to unlock the door, controlled by the child lock assembly 3. The user can then unlock the door by pressing the unlock button 2. When a child is present indoors, the lock cylinder assembly 300 is controlled to a second state by the child lock assembly 3. Even if a child presses the unlock button 2, the door cannot be unlocked. Furthermore, since the child lock assembly 3 is located on the top of the housing 1, it is not easily seen or touched by children. This prevents children from controlling the child lock assembly 3 themselves, thereby further improving the security of the smart lock.
[0052] The following is an example of how the child lock component 3 is implemented.
[0053] In some examples, such as Figure 4 and Figure 5 As shown, the child lock assembly 3 includes a button assembly 31 and a switch assembly 32. The top of the housing 1 has a through hole 10, through which the button assembly 31 passes. The switch assembly 32 is fixed inside the housing 1 and electrically connected to the lock cylinder assembly 300. The button assembly 31 is opposite to the switch assembly 32, and the button assembly 31 is used to press the switch assembly 32 to switch the lock cylinder assembly 300 between its first and second states.
[0054] Pressing and holding button component 31 (e.g., for 1.5 seconds) activates child lock component 3, placing lock cylinder component 300 in the second state. Pressing and holding button component 31 again deactivates child lock component 3, placing lock cylinder component 300 in the first state. Notably, button component 31 is elastic; it returns to its initial state when no longer pressed.
[0055] In some examples, such as Figures 4-6As shown, the button assembly 31 includes a child lock button 311 and an elastic element 312, with the child lock button 311 passing through the through hole 10. The switch assembly 32 includes a PCB 321 and a micro switch 322. The micro switch 322 is fixed to the PCB 321, and the two ends of the elastic element 312 abut against the child lock button 311 and the PCB 321 respectively. The child lock button 311 is opposite to the micro switch 322, and the PCB 321 is electrically connected to the lock cylinder assembly 300.
[0056] When the child lock button 311 is pressed and held, it contacts the micro switch 322, thereby controlling the lock cylinder assembly 300 to switch between the first and second states via the micro switch 322 and the PCB 321. When the child lock button 311 is no longer pressed, it returns to its initial position under the action of the elastic element 312.
[0057] In some examples, such as Figure 6 As shown, the top of the child lock button 311 is flush with the top of the housing 1. This makes it less likely for children to see the child lock button 311.
[0058] Because the child lock button 311 is installed on top of the inner door lock 200, the size of the child lock button 311 is limited by the thickness of the housing 1 of the inner door lock 200. In some examples, such as Figure 6 As shown, let the width of the child lock button 311 along the first direction be L, then 8mm≤L≤15mm, where the first direction is the direction from the outer door lock 100 to the inner door lock 200, that is, the first direction is the thickness direction of the housing 1.
[0059] In some examples, such as Figure 5 and Figure 6 As shown, the outer wall of the child lock button 311 has an annular protrusion 311a. The annular protrusion 311a is located inside the housing 1 and abuts against the inner wall of the housing 1 facing the PCB 321. The annular protrusion 311a can limit the child lock button 311 and prevent the child lock button 311 from falling out of the housing 1 through the through hole 10.
[0060] In some examples, such as Figure 6 As shown, let the width of the annular protrusion 311a along the first direction be D, then 9mm≤D≤16mm.
[0061] In some examples, such as Figure 4 As shown, the elastic element 312 is annular and surrounds the micro switch 322. This allows the child lock button 311 to be subjected to more even force, making it less likely for the child lock button 311 to tilt when pressed or rebounding, thereby preventing jamming when the button 311 is pressed or rebounding.
[0062] In some examples, such as Figure 4As shown, the housing 1 includes a middle frame 11 and a cover plate 12. The middle frame 11 is fixed to the door body 400, the cover plate 12 is fixed to the side of the middle frame 11 away from the door body 400, and the through hole 10 is located at the top of the middle frame 11.
[0063] In some examples, such as Figure 2 As shown, the inner door lock 200 also has an emergency knob assembly, which includes a lock cylinder and an emergency knob 4. The lock cylinder is located inside the door body 400, and the emergency knob passes through the cover plate 12. The user can lock the door using the emergency knob 4. It should be noted that the emergency knob assembly is a mechanical lock, while the child lock assembly 3 and the unlock button 2 are electronic locks. Once the user has locked the door using the emergency knob assembly, pressing either the child lock assembly 3 or the unlock button 2 will prevent the door from opening.
[0064] This disclosure also provides an entrance door, such as... Figure 1 As shown, the entrance door includes the aforementioned outer door lock 100, inner door lock 200, lock cylinder assembly 300, and door body 400. The outer door lock 100 and inner door lock 200 are located on the outer and inner sides of the door body 400, respectively, and the lock cylinder assembly 300 is located inside the door body 400.
[0065] Both the outer door lock 100 and the inner door lock 200 can control the unlocking of the lock cylinder assembly 300.
[0066] The technical solution provided in this disclosure allows the user to unlock the door from the inside. When the user needs to unlock the door from the inside, the child lock assembly 3 of the inner door lock 200 controls the lock cylinder assembly 300 to be in a first state, allowing the user to open the door 400 by pressing the unlock button 2. When a child is inside, the child lock assembly 3 controls the lock cylinder assembly 300 to be in a second state. Even if a child presses the unlock button 2, they will not be able to open the door 400. Furthermore, since the child lock assembly 3 is located on the top of the housing 1, it is not easily seen or touched by children. This prevents children from controlling the child lock assembly 3 themselves, thereby further improving the security of the entrance door.
[0067] In some examples, the distance between the top of the inner door lock 200 and the bottom of the door 400 is 130cm-140cm. That is, the distance between the top of the child lock button 311 and the ground is 130cm-140cm. This makes it difficult for children to see the child lock button 311.
[0068] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.
Claims
1. A smart door lock, characterized in that, The smart door lock includes an outer door lock (100), an inner door lock (200), and a lock cylinder assembly (300). The outer door lock (100) and the inner door lock (200) are located on the outer side and the inner side of the door body (400), respectively, and the lock cylinder assembly (300) is located inside the door body (400). The inner door lock (200) includes a housing (1), an unlock button (2), and a child lock assembly (3). The unlock button is fixed to the outside of the housing (1), and the child lock assembly (3) is located on the top of the housing (1). The unlock button (2) and the child lock assembly (3) are both electrically connected to the lock cylinder assembly (300), and the child lock assembly (3) switches the lock cylinder assembly (300) between a first state and a second state; The first state refers to the lock cylinder assembly (300) being unlocked when the unlock button (2) is pressed, and the second state refers to the lock cylinder assembly (300) being kept locked when the unlock button (2) is pressed.
2. The smart door lock according to claim 1, characterized in that, The child lock assembly (3) includes a button assembly (31) and a switch assembly (32); The top of the housing (1) has a through hole (10), and the button assembly (31) passes through the through hole (10); The switch assembly (32) is fixed inside the housing (1) and electrically connected to the lock cylinder assembly (300). The button assembly (31) is opposite to the switch assembly (32) and is used to press the switch assembly (32) to switch the first state and the second state of the lock cylinder assembly (300).
3. The smart door lock according to claim 2, characterized in that, The button assembly (31) includes a child lock button (311) and an elastic element (312); The switch assembly (32) includes a PCB (321) and a micro switch (322). The micro switch (322) is fixed to the PCB (321). The two ends of the elastic member (312) abut against the child lock button (311) and the PCB (321) respectively. The child lock button (311) is opposite to the micro switch (322). The PCB (321) is electrically connected to the lock cylinder assembly (300).
4. The smart door lock according to claim 3, characterized in that, The top of the child lock button (311) is flush with the top of the housing (1).
5. The smart door lock according to claim 3, characterized in that, it is provided that... The width of the child lock button (311) along the first direction is L, then 8mm≤L≤15mm, where the first direction is the direction from the outer door lock (100) to the inner door lock (200).
6. The smart door lock according to claim 5, characterized in that, The outer wall of the child lock button (311) has an annular protrusion (311a); The annular protrusion (311a) is located inside the housing (1) and abuts against the inner wall of the housing (1) facing the PCB (321).
7. The smart door lock according to claim 6, characterized in that, Let the width of the annular protrusion (311a) along the first direction be D, then 9mm≤D≤16mm.
8. The smart door lock according to claim 3, characterized in that, The elastic element (312) is annular and surrounds the micro switch (322).
9. The smart door lock according to any one of claims 2-8, characterized in that, The housing (1) includes a middle frame (11) and a cover plate (12); The middle frame (11) is fixed to the door body (400), the cover plate (12) is fixed to the side of the middle frame (11) away from the door body (400), and the through hole (10) is located at the top of the middle frame (11).
10. An entrance door, characterized in that, The entrance door includes an outer door lock (100), an inner door lock (200), a lock cylinder assembly (300), and a door body (400) as described in any one of claims 1-9.