Intelligent door lock capable of achieving automatic back locking

Abstract

The utility model discloses an intelligent door lock capable of achieving automatic back locking. The intelligent door lock comprises a lock shell. A main bolt assembly and an inclined bolt assembly are arranged on one side of the lock shell in a penetrating mode, an elastic reset piece used for enabling the inclined bolt assembly to be reset after retracting into the lock shell, a motor used for driving the main bolt assembly to do telescopic motion and a control mechanism used for controlling operation of the motor are arranged in the lock shell, and the control mechanism comprises a position sensor used for detecting the inclined bolt assembly. When the latch bolt is in contact with a door frame, the latch bolt retracts into the lock shell, the position sensor can be triggered, then the motor is driven to operate through the control mechanism, the main bolt assembly extends out of the lock shell, automatic counter locking is achieved, safety and convenience of the door lock are improved, and potential safety hazards caused by forgetting counter locking are avoided.

Description

Technical Field

[0001] This utility model relates to the field of door locks, and in particular to an intelligent door lock capable of automatic deadbolt locking. Background Technology

[0002] An electronic lock is an electronic product that controls the operation of circuits or chips (access control system) by means of inputting passwords, swiping cards or fingerprint recognition, thereby controlling the closing of mechanical switches and completing the unlocking and locking tasks.

[0003] For example, Chinese patent CN221879122U discloses a quick-opening mechanism for a lock tongue and a smart lock, including a square latch, a beveled latch, a drive component, and a transmission assembly. The square latch, driven by the drive component, extends out of the lock housing to achieve deadbolt locking, while the beveled latch, through its guide bevel, can contact the door frame, causing it to retract inwards and then extend outwards, thus achieving automatic door closing. However, in the aforementioned smart lock, the transmission assembly can drive both the square latch and the beveled latch to move synchronously from the extended position to the retracted position. In other words, while the user can drive the transmission assembly through the drive component to retract the beveled latch and square latch synchronously, they cannot extend synchronously. This results in the beveled latch contacting the door frame to achieve automatic door closing, but deadbolt locking cannot be achieved simultaneously.

[0004] In view of this, the present invention proposes an intelligent door lock capable of automatic deadbolt locking to solve the above problems. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides an intelligent door lock that can automatically lock. It can automatically close the door when the latch contacts the door frame, and at the same time, the main bolt extends out of the lock case to achieve automatic locking.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An intelligent door lock capable of automatic deadbolt locking includes a lock housing. A main bolt assembly and a latch assembly are disposed through one side of the lock housing. The lock housing contains an elastic reset member for retracting and resetting the latch assembly, a motor for driving the extension and retraction of the main bolt assembly, and a control mechanism for controlling the operation of the motor. The control mechanism includes a position sensor for detecting the position of the latch assembly. The control mechanism can drive the motor to operate and cause the main bolt assembly to extend out of the lock housing after the position sensor detects that the latch assembly has retracted to a designated position within the lock housing.

[0008] Preferably, the latch assembly includes a latch penetrating the lock housing and a first guide plate connected to the latch. The first guide plate is located inside the lock housing and has a first strip hole. The extension direction of the first strip hole is consistent with the extension and retraction direction of the latch assembly. A first positioning post penetrating the first strip hole is provided inside the lock housing.

[0009] Preferably, the lock housing is provided with a spring groove, the elastic reset member is a spring located in the spring groove, and the latch assembly includes a pressing part located in the spring groove, which can compress the spring while retracting into the lock housing.

[0010] Preferably, the position sensor includes a sensitive element, which can drive the motor to run and cause the main tongue assembly to extend out of the lock housing when the sensitive element cannot detect the first guide plate.

[0011] Preferably, the control mechanism further includes a circuit board electrically connected to the motor, a battery for supplying power to the circuit board, and the position sensor electrically connected to the circuit board. An unlock button is provided through the lock housing, and an unlock switch is provided on the circuit board. The unlock button is used to press the unlock switch to drive the motor.

[0012] Preferably, the main tongue assembly includes a main tongue that penetrates the lock housing and a second guide plate connected to the main tongue. The second guide plate is located inside the lock housing. The output shaft of the motor moves the second guide plate through a transmission assembly and drives the main tongue assembly to extend out of the lock housing.

[0013] Preferably, the second guide plate is provided with a second strip-shaped hole, the extension direction of the second strip-shaped hole is consistent with the extension and retraction direction of the main tongue, and a second positioning post is provided inside the lock housing that passes through the second strip-shaped hole.

[0014] Preferably, the transmission assembly includes a first gear connected to the output shaft of the motor and a second gear meshing with the first gear. The second gear has a rotating shaft at its center, and the rotating shaft has a lever extending radially outward along the second gear. The second guide plate has a transmission opening, and the end of the lever away from the rotating shaft is placed in the transmission opening.

[0015] Preferably, the lock housing is provided with a manual knob on the outside, and the manual knob is provided with a connecting part at the center of one end of the lock housing. The connecting part passes through the lock housing and is fixedly connected to the center of the second gear.

[0016] Preferably, the tongue is provided with two guide slopes for contacting the door frame, and the tongue is symmetrical along its extension and retraction direction.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. When the latch of this utility model contacts the door frame, the latch retracts into the lock housing, which can trigger the position sensor, and then drive the motor to run through the control mechanism, so that the main latch assembly extends out of the lock housing, realizing automatic deadbolt, improving the security and convenience of the door lock, and avoiding the safety hazards caused by forgetting to deadbolt.

[0019] 2. This utility model can be unlocked electrically by the unlock button or by turning the manual knob, ensuring normal operation even in the event of a power outage or control mechanism failure.

[0020] 3. The latch is symmetrical along its extension and retraction direction. The latch has two guide bevels for contacting the door frame. When the door lock is installed on the door, the latch can contact the door frame and retract into the lock case when the door rotates inward or outward. This allows the latch to retract inward and then extend outward, thereby achieving automatic door closing and improving the versatility and adaptability of the door lock. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the interior of the lock case of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the interior of the lock case of this utility model. Figure 2 ;

[0023] Figure 3 This is an overall schematic diagram of the oblique tongue assembly of this utility model;

[0024] Figure 4 This is an overall schematic diagram of the circuit board of this utility model;

[0025] Figure 5 This is an overall schematic diagram of the door lock of this utility model;

[0026] Figure 6 This is an exploded schematic diagram of the lock case of this utility model;

[0027] The implementation, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0029] Reference Figures 1-6 This invention presents an embodiment of an intelligent door lock capable of automatic locking:

[0030] A smart door lock capable of automatic deadbolt locking includes a lock housing 1. A main bolt assembly 2 and a latch assembly 3 are disposed through one side of the lock housing 1. The lock housing 1 is provided with an elastic reset member (not shown in the figure) for retracting and resetting the latch assembly 3 inside the lock housing 1, a motor 4 for driving the extension and retraction of the main bolt assembly 2, and a control mechanism for controlling the operation of the motor 4. The control mechanism includes a position sensor 5 for detecting the position of the latch assembly 3. After the position sensor 5 detects that the latch assembly 3 has retracted to a specified position in the lock housing 1, the control mechanism drives the motor 4 to run and causes the main bolt assembly 2 to extend out of the lock housing 1.

[0031] like Figure 1 As shown, the latch assembly 3 includes a latch 31 penetrating the lock housing 1 and a first guide plate 32 connected to the latch 31. The first guide plate 32 is located inside the lock housing 1 and has a first strip-shaped hole 321. The extension direction of the first strip-shaped hole 321 is consistent with the extension and retraction direction of the latch assembly 3. A first positioning post 322 penetrating the first strip-shaped hole 321 is provided inside the lock housing 1. The first strip-shaped hole 321 cooperates with the first positioning post 322 to enable the latch assembly 3 to move stably in extension and retraction.

[0032] like Figure 1 As shown, the lock housing 1 is provided with a spring groove 33, the elastic reset member is a spring located in the spring groove 33, and the tongue assembly 3 includes a pressing part 34 located in the spring groove 33. The pressing part 34 can compress the spring while retracting into the lock housing 1.

[0033] In this embodiment, the oblique tongue 31, the first guide plate 32, and the pressing part 34 are integrally formed into the oblique tongue assembly 3.

[0034] The position sensor 5 includes a sensitive element 51. When the sensitive element 51 cannot detect the first guide plate 32, the position sensor 5 can drive the motor 4 to run and drive the main tongue assembly 2 to extend out of the lock case 1.

[0035] The control mechanism also includes a circuit board 41 electrically connected to the motor 4, a battery 43 for supplying power to the circuit board 41, and a position sensor 5 electrically connected to the circuit board 41. An unlocking button 42 is provided through the lock housing 1, and an unlocking switch 411 is provided on the circuit board 41. The unlocking button 42 is used to press the unlocking switch 411 to drive the motor 4, thereby unlocking or locking the main latch assembly 2.

[0036] The main tongue assembly 2 includes a main tongue 21 that penetrates the lock housing 1 and a second guide plate 22 connected to the main tongue 21. The second guide plate 22 is located inside the lock housing 1. The output shaft of the motor 4 moves the second guide plate 22 through the transmission assembly and drives the main tongue assembly 2 to extend out of the lock housing 1.

[0037] The second guide plate 22 is provided with a second strip-shaped hole 221, the extension direction of which is consistent with the extension and retraction direction of the main tongue 21. The lock housing 1 is provided with a second positioning post 222 that passes through the second strip-shaped hole 221. The second strip-shaped hole 221 cooperates with the second positioning post 222 to enable the main tongue assembly 2 to move stably in extension and retraction.

[0038] In this embodiment, the main tongue 21 and the second guide plate 22 are integrally formed into the main tongue assembly 2.

[0039] The transmission assembly includes a first gear 44 connected to the output shaft of the motor 4 and a second gear 45 meshing with the first gear 44. The center of the second gear 45 is provided with a rotating shaft 451. The rotating shaft 451 is provided with a lever 452 extending radially outward along the second gear 45. The second guide plate 22 is provided with a transmission opening 223. The end of the lever 452 away from the rotating shaft 451 is placed in the transmission opening 223.

[0040] The lock housing 1 has a manual knob 6 on its exterior. The center of the manual knob 6 facing the lock housing 1 has a connecting part that passes through the lock housing and is fixedly connected to the center of the second gear 45. This utility model can unlock the main bolt 21 by electrically driving the unlocking button 42, and can also unlock the main bolt 21 by turning the manual knob 6, ensuring normal operation even in the event of a power outage or control mechanism failure.

[0041] The latch 31 is provided with two guide bevels 311 for contacting the door frame, and the latch 31 is symmetrical along its extension and retraction direction. When the door lock is installed on the door, the latch 31 can contact the door frame and retract into the lock housing 1 when the door rotates inward or outward, so that the latch 31 first retracts inward and then extends outward, thereby realizing automatic closing of the door and improving the versatility and adaptability of the door lock.

[0042] like Figure 6 As shown, the lock case 1 includes a lock housing 11, a decorative push cover 12, and a decorative fixing cover 13. The main latch 21 and the oblique latch 31 are disposed through the side of the lock housing 11. The unlocking button 42 is installed on the front of the lock housing 11, and after passing through the front of the lock housing 11, it is connected to the unlocking switch 411. The manual knob 6 is installed on the front of the lock housing 11, and after passing through the front of the lock housing 11, it is connected to the second gear 45. The decorative fixing cover 13 is fixedly connected to the front of the lock housing 11, and the decorative fixing cover 13 has a button hole 131 for the unlocking button 42 to pass through and a knob hole 132 for the manual knob 6 to pass through. The front of the lock housing 11 also has a battery slot 111 for storing a battery 43, and the decorative push cover 12 covers the opening of the battery slot 111.

[0043] The working principle of this invention's locking mechanism is as follows: First, the door is pushed, causing the latch 31 to contact the door frame. The latch 31 retracts into the lock housing 1. When the sensitive element 51 no longer detects the first guide plate 32, the control mechanism drives the motor 4. The output of the motor 4 drives the main latch 21 to extend out of the lock housing 1 through the transmission assembly. Typically, the door frame has a self-locking hole and a deadbolt hole. After the main latch 21 extends out of the lock housing 1, it engages in the deadbolt hole, achieving automatic deadbolt locking. After the latch 31 retracts into the lock housing 1, it rebounds out of the lock housing 1 under the restoring force of the spring and engages in the self-locking hole. This improves the security and convenience of the door lock and avoids safety hazards caused by forgetting to deadbolt.

[0044] The working principle of this invention for unlocking is as follows: First, by pressing the unlock button 42, the control mechanism drives the motor 4 to run, thereby causing the main bolt 21 to retract into the lock housing 1. Then, by pushing the door, the latch 31, which has two guide slopes 311, can slide out of the self-locking hole, thus unlocking the door. Second, by rotating the manual knob 6, the manual knob 6 drives the main bolt 21 to retract into the lock housing 1 through the second gear 45 and the lever 452, thus unlocking the door.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A smart door lock capable of automatic self-locking, comprising a lock housing (1), characterized in that, The lock shell (1) is provided with a main tongue assembly (2) and a latch bolt assembly (3) on one side, the lock shell (1) is provided with an elastic reset member for resetting the latch bolt assembly (3) after being retracted into the lock shell (1), a motor (4) for driving the main tongue assembly (2) to extend and retract, and a control mechanism for controlling the operation of the motor (4), the control mechanism comprises a position sensor (5) for detecting the position of the latch bolt assembly (3), and the control mechanism can drive the motor (4) to operate after the position sensor (5) detects that the latch bolt assembly (3) is retracted to a specified position in the lock shell (1), and drive the main tongue assembly (2) to extend out of the lock shell (1).

2. The smart door lock capable of automatically counter locking according to claim 1, characterized in that, The latch bolt assembly (3) comprises a latch bolt (31) penetrating the lock shell (1) and a first guide plate (32) connected with the latch bolt (31), the first guide plate (32) is located in the lock shell (1), the first guide plate (32) is provided with a first slot (321), the extension direction of the first slot (321) is consistent with the extension direction of the latch bolt assembly (3), and the lock shell (1) is provided with a first positioning column (322) penetrating the first slot (321).

3. The smart door lock capable of automatically counter locking according to claim 2, characterized in that, The lock shell (1) is provided with a spring groove (33), the elastic reset member is a spring located in the spring groove (33), the latch bolt assembly (3) comprises a pressing part (34) located in the spring groove (33), and the pressing part (34) can be retracted into the lock shell (1) while compressing the spring.

4. The smart door lock capable of automatically counter locking according to claim 3, characterized in that, The position sensor (5) comprises a sensitive element (51), and the position sensor (5) can drive the motor (4) to operate and drive the main tongue assembly (2) to extend out of the lock shell (1) when the sensitive element (51) cannot detect the first guide plate (32).

5. The smart door lock capable of automatically counter locking according to claim 3, characterized in that, The control mechanism further comprises a circuit board (41) electrically connected with the motor (4) and a battery (43) for supplying power to the circuit board (41), the position sensor (5) is electrically connected with the circuit board (41), the lock shell (1) is provided with an unlocking button (42), the circuit board (41) is provided with an unlocking switch (411), and the unlocking button (42) is used for pressing the unlocking switch (411) to drive the motor (4) to operate.

6. The smart door lock capable of automatically counter locking according to claim 1, wherein, The main tongue assembly (2) comprises a main tongue (21) penetrating the lock shell (1) and a second guide plate (22) connected with the main tongue (21), the second guide plate (22) is located in the lock shell (1), and the output shaft of the motor (4) drives the second guide plate (22) through a transmission assembly and drives the main tongue assembly (2) to extend out of the lock shell (1).

7. The smart door lock capable of automatically counter locking according to claim 6, characterized in that, The second guide plate (22) is provided with a second slot (221), the extension direction of the second slot (221) is consistent with the extension direction of the main tongue (21), and the lock shell (1) is provided with a second positioning column (222) penetrating the second slot (221).

8. The smart door lock capable of automatically counter locking according to claim 7, characterized in that, The transmission assembly comprises a first gear (44) connected to an output shaft of the motor (4), and a second gear (45) engaged with the first gear (44), wherein the second gear (45) is provided with a rotating shaft (451), and the rotating shaft (451) is provided with a push rod (452) extending radially outward from the second gear (45), and the second guide plate (22) is provided with a transmission opening (223), and one end of the push rod (452) away from the rotating shaft (451) is arranged in the transmission opening (223).

9. The smart door lock capable of automatically counter locking according to claim 8, characterized in that, The lock shell (1) is externally provided with a manual knob (6), and the manual knob (6) is provided with a connecting portion at the center of one end of the lock shell (1), and the connecting portion penetrates through the lock shell (1) and is fixedly connected with the center of the second gear (45).

10. The smart door lock capable of automatically counter locking according to claim 2, characterized in that, The latch bolt (31) is provided with two guide inclined surfaces (311) for contacting the door frame, and the latch bolt (31) is symmetrical along the self telescopic direction.

Images