Fault-proof locking mechanism of self-bouncing locking door lock

Abstract

The invention discloses a fault-proof locking mechanism of a self-bouncing locking door lock, and relates to the technical field of door locks, the fault-proof locking mechanism comprises a main tongue assembly, an inclined tongue assembly and a self-bouncing assembly which are arranged in a lock shell, the main tongue assembly and the inclined tongue assembly can stretch out of or retract into the lock shell through a clutch, the clutch is used for being connected with a handle, and the self-bouncing assembly is used for being connected with the handle. The self-elastic assembly can stretch out of or retract into the lock shell and is connected with the main tongue assembly. When a door is closed, the self-elastic assembly retracts into the lock shell and loosens the linkage rotating disc, the linkage rotating disc drives the limiting rotating disc to rotate so that the second linkage rod can be separated from the main tongue piece, and the main tongue piece resets so that the main tongue can stretch out of the lock shell. When the self-elastic assembly breaks down, locking of the main tongue can still be achieved through the handle, the function of preventing faults is achieved, and the use experience feeling is better.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, in particular to a fault-proof locking mechanism of a self-elastic locking door lock. Background Art

[0002] Smart door locks are widely used due to their security and convenience. With the development of smart door locks, self-activating smart door locks have emerged, where the main latch automatically locks when the door is closed. Existing self-activating smart door locks typically utilize a rear-action self-activating mechanism. When the door is closed, the mechanism retracts into the lock housing after being squeezed against the door frame. This retraction releases the main latch, allowing it to reposition and extend from the lock housing, achieving the desired automatic locking effect.

[0003] The above-mentioned self-elastic smart door lock relies on a self-elastic structure to lock the main tongue lock, and the self-elastic structure is provided with elastic structures such as springs and torsion springs for resetting. Therefore, the self-elastic structure is prone to dislocation after long-term use, thereby causing the self-elastic structure to fail. When the self-elastic structure fails, the self-elastic structure locks the main tongue lock and the door lock cannot be opened, resulting in the defect that the door lock is easily unable to be opened.

[0004] Therefore, it is necessary to further optimize the structure of the self-opening smart door lock Summary of the Invention

[0005] The invention discloses a fault-proof locking mechanism of a self-elastic locking door lock, which solves the technical problem that the door lock cannot be opened when the self-elastic structure fails.

[0006] In order to solve the above technical problems, the present invention proposes the following optimization technical solutions: A fault-proof locking mechanism for a self-loading locking door lock, comprising a main tongue assembly, a tilted tongue assembly, and a self-loading assembly disposed within a lock housing. The main tongue assembly and the tilted tongue assembly can be extended or retracted into the lock housing by a clutch, and the self-loading assembly can be extended or retracted into the lock housing. The self-loading assembly is connected to the main tongue assembly. The main tongue assembly includes a linkage rotary disk, a limit rotary disk, a main tongue member and a first torsion spring, the linkage rotary disk and the limit rotary disk are respectively rotatably sleeved on the first rotating shaft of the lock housing, the first torsion spring is sleeved on the linkage rotary disk, the self-elastic assembly hooks the linkage rotary disk, the main tongue member is slidably arranged in the lock housing, the main tongue member is provided with a main tongue, and the limit rotary disk abuts against the main tongue member to retract the main tongue into the lock housing; the linkage rotary disk is provided with a first linkage rod, the limit rotary disk is provided with a second linkage rod, and the second linkage rod abuts against the first linkage rod; the clutch can drive the limit rotary disk to rotate so that the second linkage rod releases the main tongue member; When the door is closed, the self-elastic component retracts into the lock housing, the self-elastic component releases the linkage turntable, and the linkage turntable drives the limit turntable to rotate so that the second linkage rod is separated from the main tongue member, and the main tongue member is reset to make the main tongue extend out of the lock housing.

[0007] Furthermore, the self-elastic component includes a self-elastic tongue, a transmission component and a linkage member, one end of the transmission component is connected to the self-elastic tongue, and the other end is used to abut against the linkage member, the middle part of the linkage member is rotatably sleeved on the second rotating shaft of the lock housing, and one end is hooked on the linkage rotary disk; When the door is closed, the self-elastic tongue retracts into the lock housing, and the transmission assembly drives the linkage member to release the linkage turntable.

[0008] Furthermore, the self-elastic tongue is connected to a first connecting rod, and the first connecting rod is connected to the transmission assembly.

[0009] Furthermore, the transmission assembly includes a locking member, a transmission rod and a pushing member, the middle portion of the locking member is rotatably sleeved on the third rotating shaft of the lock housing, one end of the locking member is connected to the first connecting rod, and the other end is used to resist the transmission rod, the transmission rod is slidably arranged in the lock housing, the transmission rod is sleeved on the fourth rotating shaft of the lock housing through a second torsion spring, one end of the pushing member is rotatably sleeved on the fifth rotating shaft of the latch tongue, and the other end is used to push the linkage member, and the fifth rotating shaft is sleeved with a third torsion spring; When the self-elastic tongue is retracted into the lock housing, the first connecting rod drives the locking member to rotate about the third rotating shaft, the locking member releases the transmission rod, the transmission rod is reset by the second torsion spring to release the pushing member, the pushing member is rotated by the third torsion spring and presses against the linkage member, the inclined tongue assembly extends out of the lock housing and drives the linkage member to push the linkage member, so that the linkage member releases the linkage turntable.

[0010] Furthermore, a pushing portion is provided at one end of the linkage member, and the pushing portion is used for the inclined tongue assembly to rest thereon.

[0011] Furthermore, the other end of the linkage member is provided with a hook, and the linkage turntable is provided with a protrusion; When the self-elastic tongue extends out of the lock housing, the hook portion hooks the protrusion.

[0012] Furthermore, the latch bolt assembly is slidably disposed in the lock housing.

[0013] Furthermore, the oblique tongue assembly includes an oblique tongue, a second connecting rod, a linkage part and a fourth torsion spring, one end of the second connecting rod is connected to the oblique tongue, and the other end is connected to the linkage part, the linkage part is used for the clutch to rest thereon, the fourth torsion spring is connected to the linkage part, and the oblique tongue can retract or extend into or out of the lock housing.

[0014] The present invention has the following beneficial effects compared to the prior art: The linkage turntable and the limit turntable of the present invention are linked by the way that the first linkage rod and the second linkage rod are against each other. When the linkage turntable is released by the self-elastic component, the linkage turntable rotates, and the first linkage rod pushes the second linkage rod to make the second linkage rod disengage from the main tongue part, thereby realizing the locking of the main tongue. When the self-elastic component fails, the linkage turntable is locked by the self-elastic component, and the clutch is rotated by the handle. The clutch drives the limit turntable to rotate to make the second linkage rod disengage from the main tongue part, thereby enabling the main tongue to be locked. Even if the self-elastic component fails, the main tongue can still be locked by the handle, which plays a role in fault prevention and provides a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the lock housing of the present invention Figure 1 .

[0017] Figure 3 This is a schematic diagram of the internal structure of the lock housing of the present invention Figure 2 .

[0018] Figure 4 This is a schematic diagram of the structure of the oblique tongue assembly and the self-elastic assembly of the present invention. Figure 1 .

[0019] Figure 5 This is a schematic diagram of the structure of the oblique tongue assembly and the self-elastic assembly of the present invention. Figure 2 .

[0020] Figure 6 Schematic diagram of the explosion of the main tongue assembly of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the inclined tongue assembly of the present invention.

[0022] In the figure: 100, lock housing; 200, main tongue assembly; 210, linkage turntable; 211, first linkage rod; 212, protrusion; 220, limit turntable; 221, second linkage rod; 230, main tongue member; 231, main tongue; 240, first torsion spring; 300, oblique tongue assembly; 310, oblique tongue; 320, second connecting rod; 330, linkage part; 340, fourth torsion spring; 400, self-elastic assembly; 410, self-elastic tongue; 420, first connecting rod; 430, positioning member; 440, transmission rod; 450, linkage member; 451, hook; 452, pushing part; 460, pushing member. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] See also Figure 1-Figure 7 A fail-safe locking mechanism for a self-latching door lock includes a main tongue assembly 200, a latch tongue assembly 300, and a self-latching assembly 400 disposed within a lock housing 100. The main tongue assembly 200 and the latch tongue assembly 300 can be extended or retracted into the lock housing 100 by a clutch, the clutch being used to connect to a handle. The self-latching assembly 400 can be extended or retracted into the lock housing 100 and is connected to the main tongue assembly 200. The main tongue assembly 200 includes a linkage rotary disk 210, a limiting rotary disk 220, a main tongue piece 230 and a first torsion spring 240. The linkage rotary disk 210 and the limiting rotary disk 220 are respectively rotatably sleeved on the first rotating shaft of the lock housing 100. The first torsion spring 240 is sleeved on the linkage rotary disk 210. The self-elastic assembly 400 hooks the linkage rotary disk 210. The main tongue piece 230 is slidably arranged in the lock housing 100. The main tongue piece 230 is provided with a main tongue 231. The limiting rotary disk 220 presses against the main tongue piece 230 to retract the main tongue 231 into the lock housing 100. The linkage rotary disk 210 is provided with a first linkage rod 211. The limiting rotary disk 220 is provided with a second linkage rod 221. The second linkage rod 221 presses against the first linkage rod 211. The clutch can drive the limiting rotary disk 220 to rotate so that the second linkage rod 221 releases the main tongue piece 230. When the door is closed, the self-elastic component 400 is squeezed by the door frame and retracted into the lock shell 100. After the self-elastic component 400 is retracted into the lock shell 100, the linkage turntable 210 will be released, and the linkage turntable 210 will be reset and rotated under the action of the first torsion spring 240. During the rotation of the linkage turntable 210, the second linkage rod 221 will push the first linkage rod 211, that is, drive the limit turntable 220 to rotate, so that the second linkage rod 221 is separated from the main tongue member 230. Specifically, a notch is provided on the main tongue member 230, and the second linkage rod 221 is separated from the notch, and the main tongue member 230 is connected to the lock shell 100 by a tension spring. Therefore, when the second linkage rod 221 is separated from the notch, the main tongue member 230 is reset under the action of the tension spring, and the main tongue 231 is extended out of the lock shell 100, so that the main tongue 231 is locked.

[0025] When the self-elastic assembly 400 fails, that is, the self-elastic assembly 400 hooks the linkage turntable 210 and does not release it, the clutch is rotated by the handle, and the clutch drives the limit turntable 220 to rotate. The second linkage rod 221 of the limit turntable 220 disengages from the notch of the main tongue member 230, and the main tongue member 230 is reset under the action of the tension spring, so that the main tongue 231 extends out of the lock housing 100, thereby locking the main tongue 231.

[0026] In this embodiment, see Figure 2 and Figure 3 The self-elastic component 400 includes a self-elastic tongue 410, a transmission component and a linkage member 450. One end of the transmission component is connected to the self-elastic tongue 410, and the other end is used to abut against the linkage member 450. The middle part of the linkage member 450 is rotatably sleeved on the second rotating shaft of the lock housing 100, and one end is hooked on the linkage rotary disk 210. When closing the door, the self-elastic tongue 410 is squeezed by the door frame and retracted into the lock shell 100, and the transmission assembly drives the linkage member 450 to release the linkage turntable 210. Specifically, the transmission assembly pushes one end of the linkage member 450. At this time, the linkage member 450 rotates about the second shaft, and the other end of the linkage member 450 moves away from the linkage turntable 210 and releases the linkage turntable 210, so that the linkage turntable 210 rotates under the action of the first torsion spring 240. The linkage turntable rotates to drive the main tongue to extend out of the lock shell to achieve locking.

[0027] In this embodiment, the self-ejecting tongue 410 is connected to a first connecting rod 420, which is connected to the transmission assembly. A guide structure is provided within the lock housing 100. The guide structure has a notch, through which the first connecting rod 420 passes. The notch serves to guide the first connecting rod 420, ensuring translation of the first connecting rod 420 when the self-ejecting tongue 410 retracts and extends from the lock housing 100.

[0028] In this embodiment, the transmission assembly includes a locking member 430, a transmission rod 440 and a pushing member 460. The middle portion of the locking member 430 is rotatably sleeved on the third rotating shaft of the lock housing 100, one end of which is connected to the first connecting rod 420, and the other end is used to resist the transmission rod 440. The transmission rod 440 is slidably disposed in the lock housing 100. The transmission rod 440 is sleeved on the fourth rotating shaft of the lock housing 100 through a second torsion spring. One end of the pushing member 460 is rotatably sleeved on the fifth rotating shaft of the latch bolt assembly 300, and the other end is used to push the linkage member 460. The fifth rotating shaft is sleeved with a third torsion spring. When the self-elastic tongue 410 is retracted into the lock housing 100, the first connecting rod 420 drives the locking member 430 to rotate about the third rotation axis. At this time, the locking member 430 releases the transmission rod 440, and the transmission rod 440 is reset by the second torsion spring to release the pushing member 460. Specifically, the transmission rod 440 moves in the direction away from the pushing member 460. At this time, the pushing member 460 is reset and rotated by the third torsion spring and presses against the linkage member 450. Specifically, under the action of the third torsion spring, the pushing member 460 approaches and partially presses against the linkage member 450, closing the door. During operation, the latch bolt assembly 300 retracts into the lock housing 100 and then extends out of the lock housing 100. Since the pushing member 460 is provided on the latch bolt assembly 300, the latch bolt assembly 300 drives the pushing member 460 to move when extending out of the lock housing 100. When the pushing member 460 moves, the pushing member 460 drives the pushing member 460 to push the linkage member. Specifically, the pushing member 460 pushes one end of the linkage member 450, and the linkage member 450 rotates. The other end of the linkage member 450 releases the linkage turntable 210. Under the action of the first torsion spring 240, the linkage turntable 210 extends the main tongue out of the lock housing to achieve locking.

[0029] In this embodiment, one end of the linkage member 450 is provided with a push portion 452, against which the latch bolt assembly 300 abuts. When the latch bolt assembly 300 drives the push member 460 to move, the push member 460 abuts against the push portion 452 on the linkage member 450, thereby enabling the push member 460 to push one end of the linkage member 450.

[0030] In this embodiment, a hook portion 451 is provided at the other end of the linkage member 450, and the linkage turntable 210 is provided with a protrusion 212; when the self-elastic tongue 410 extends out of the lock housing 100, the hook portion 451 hooks the protrusion 212; when the self-elastic tongue 410 retracts into the lock housing 100, the transmission assembly pushes the linkage member 450 so that the linkage member 450 rotates about the second rotation axis, and the hook portion 451 disengages from the protrusion 212.

[0031] In this embodiment, the latch bolt assembly 300 is slidably disposed in the lock housing 100 . When the door is closed, the latch bolt assembly 300 is squeezed by the door frame and retracts into the lock housing 100 and then extends again.

[0032] In this embodiment, see Figure 5 The latch bolt assembly 300 includes a latch bolt 310, a second connecting rod 320, a linkage portion 330, and a fourth torsion spring 340. The second connecting rod 320 is connected to the latch bolt 310 at one end and to the linkage portion 330 at the other end. The linkage portion 330 is used for the clutch to abut against, allowing the clutch to rotate and retract the latch bolt assembly 300 into the lock housing 100, unlocking the door. The fourth torsion spring 340 is connected to the linkage portion 330, allowing the latch bolt 310 to retract or extend into the lock housing 100. When the door is closed, the latch bolt 310 is squeezed by the door frame and retracted into the lock housing 100. The third torsion spring 340 is used to return the latch bolt 310 to its original position when it is not squeezed.

[0033] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fault-proof locking mechanism for a self-locking door lock, characterized in that: The lock comprises a main tongue assembly, a tilted tongue assembly and a self-elastic assembly arranged in a lock housing, wherein the main tongue assembly and the tilted tongue assembly can be extended or retracted into the lock housing by clutching, and the self-elastic assembly can be extended or retracted into the lock housing, and the self-elastic assembly is connected to the main tongue assembly; The main tongue assembly includes a linkage rotary disk, a limit rotary disk, a main tongue member and a first torsion spring, the linkage rotary disk and the limit rotary disk are respectively rotatably sleeved on the first rotating shaft of the lock housing, the first torsion spring is sleeved on the linkage rotary disk, the self-elastic assembly hooks the linkage rotary disk, the main tongue member is slidably arranged in the lock housing, the main tongue member is provided with a main tongue, and the limit rotary disk abuts against the main tongue member to retract the main tongue into the lock housing; the linkage rotary disk is provided with a first linkage rod, the limit rotary disk is provided with a second linkage rod, and the second linkage rod abuts against the first linkage rod; the clutch can drive the limit rotary disk to rotate so that the second linkage rod releases the main tongue member; When the door is closed, the self-elastic component retracts into the lock housing, the self-elastic component releases the linkage turntable, and the linkage turntable drives the limit turntable to rotate so that the second linkage rod is separated from the main tongue member, and the main tongue member is reset to make the main tongue extend out of the lock housing.

2. A fault-proof locking mechanism for a self-locking door lock according to claim 1, characterized in that: The self-elastic component includes a self-elastic tongue, a transmission component and a linkage member, one end of the transmission component is connected to the self-elastic tongue, and the other end is used to abut the linkage member, the middle part of the linkage member is rotatably sleeved on the second rotating shaft of the lock housing, and one end is hooked on the linkage rotary disk; When the door is closed, the self-elastic tongue retracts into the lock housing, and the transmission assembly drives the linkage member to release the linkage rotary disk.

3. A fault-proof locking mechanism for a self-locking door lock according to claim 2, characterized in that: The self-elastic tongue is connected to a first connecting rod, and the first connecting rod is connected to the transmission assembly.

4. A fault-proof locking mechanism for a self-locking door lock according to claim 3, characterized in that: The transmission assembly includes a positioning member, a transmission rod and a pushing member. The middle portion of the positioning member is rotatably sleeved on the third rotating shaft of the lock housing, one end of the positioning member is connected to the first connecting rod, and the other end is used to resist the transmission rod. The transmission rod is slidably arranged in the lock housing, and the transmission rod is sleeved on the fourth rotating shaft of the lock housing through a second torsion spring. One end of the pushing member is rotatably sleeved on the fifth rotating shaft of the latch bolt assembly, and the other end is used to push the linkage member. The fifth rotating shaft is sleeved with a third torsion spring. When the self-elastic tongue is retracted into the lock housing, the first connecting rod drives the locking member to rotate about the third rotating shaft, the locking member releases the transmission rod, the transmission rod is reset by the second torsion spring to release the pushing member, the pushing member is rotated by the third torsion spring and presses against the linkage member, the inclined tongue assembly extends out of the lock housing and drives the linkage member to push the linkage member, so that the linkage member releases the linkage turntable.

5. The anti-failure locking mechanism of a self-locking door lock according to claim 2, characterized in that: One end of the linkage member is provided with a pushing portion, and the pushing portion is used for the inclined tongue assembly to rest thereon.

6. A fault-proof locking mechanism for a self-locking door lock according to claim 2, characterized in that: The other end of the linkage member is provided with a hook, and the linkage turntable is provided with a protrusion; When the self-elastic tongue extends out of the lock housing, the hook portion hooks the protrusion.

7. The anti-failure locking mechanism of a self-locking door lock according to claim 1, characterized in that: The latch bolt assembly is slidably disposed within the lock housing.

8. The anti-failure locking mechanism of a self-locking door lock according to claim 1, characterized in that: The inclined tongue assembly includes an inclined tongue, a second connecting rod, a linkage part and a fourth torsion spring. One end of the second connecting rod is connected to the inclined tongue, and the other end is connected to the linkage part. The linkage part is used for the clutch to rest against it. The fourth torsion spring is connected to the linkage part. The inclined tongue can be retracted into or extended from the lock housing.

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