US-12618268-B2 - Door lock with both manual and electric unlocking functions

US12618268B2US 12618268 B2US12618268 B2US 12618268B2US-12618268-B2

Abstract

A door lock with both manual and electric unlocking functions includes a lock body and a transmission rod. The lock body is provided with a latch for locking a door leaf. The transmission rod is in a transmission connection with the latch. When the transmission rod is manually or electrically driven to rotate forward or backward, the transmission rod is configured to drive the latch of the lock body to retract or extend, thereby achieving opening or closing of the door leaf. The door lock further includes a first housing, a rotating disc, and a rotating member. A misalignment device is arranged between the rotating disc and the rotating member. The misalignment device includes an idling area and a block, a controller, and a drive motor. The door lock further includes a positioning member fixedly arranged on the first housing.

Inventors

Jian Chen
Xifeng Wang

Assignees

Meta Intelligence LLC

Dates

Publication Date: 20260505
Application Date: 20250624
Priority Date: 20241025

Claims (13)

1 . A door lock with both manual and electric unlocking functions, comprising a lock body and a transmission rod; wherein the lock body is provided with a latch for locking a door leaf; the transmission rod is in a transmission connection with the latch; when the transmission rod is manually or electrically driven to rotate forward or backward, the transmission rod is configured to drive the latch of the lock body to retract or extend, wherein opening or closing of the door leaf is achieved; the door lock further comprises a first housing, a rotating disc rotatably arranged on the first housing, and a rotating member; wherein rotatory central lines of the transmission rod, the rotating disc, and the rotating member overlap; the transmission rod is in a transmission connection with the rotating member; a misalignment device is arranged between the rotating disc and the rotating member; the misalignment device comprises an idling area and a block extending into the idling area; the block is configured to move within the idling area; the idling area and the block are arranged at the rotating disc or the rotating member in an alternative manner; when the transmission rod is manually driven to rotate forward or backward, and the rotating member is driven to rotate forward or backward, the idling area provides a moving space for the block, enabling the rotating member to rotate relative to the rotating disc; the door lock further comprises a controller and a drive motor communicated with the controller; the drive motor is configured to drive the rotating disc to rotate and is fixed on the first housing; when the controller receives an indication signal for opening or closing a door, the controller is configured to control the drive motor to drive the rotating disc to rotate forward or backward; the rotating disc rotating forward or backward is configured to, with a help of the misalignment device, drive the rotating member to rotate forward or backward; the rotating member rotating forward or backward further drives the transmission rod to rotate forward or backward, wherein the opening or closing of the door is achieved; and the door lock further comprises a positioning member fixedly arranged on the first housing; wherein the rotating member is arranged between the rotating disc and the positioning member; and the rotating disc and the positioning member provide axial positioning for the rotating member, and the rotating disc or the positioning member provides radial positioning for the rotating member.
2 . The door lock according to claim 1 , wherein when the latch is retracted to be in a door-opening state, the block is located in a middle position of the idling area, and during a locking process, the idling area provides a space for the block to move left and right; or when the latch is extended to be in a door-closing state, the block is located in the middle position of the idling area, and during an unlocking process, the idling area provides a space for the block to move left and right.
3 . The door lock according to claim 1 , wherein a bottom plate central hole is formed in the first housing; the rotating disc comprises a driving disc and a rotating shaft part connected below the driving disc; the rotating shaft part has a central shaft hole; an aperture of the central shaft hole is larger than a rotation diameter of the transmission rod; the rotating shaft part of the rotating disc is rotatably installed in the bottom plate central hole of the first housing, wherein a rotatable installation of the rotating disc on the first housing is achieved; and an end of the transmission rod passes through the central shaft hole from an outside of the first housing and is connected to the rotating member.
4 . The door lock according to claim 3 , wherein an outer edge of the driving disc is provided with tooth grooves, and a small gear is installed on an axial extending end of the drive motor; the drive motor achieves deceleration through engaged transmission of the small gear and the tooth grooves and drives the rotating disc to rotate.
5 . The door lock according to claim 3 , wherein the positioning member has an annular body, and the annular body is provided with an annular hole; the annular body is combined with the rotating member and provides axial positioning for the rotating member from above; the door lock further comprises a lock cylinder, and the lock cylinder is positioned in the annular hole; the lock cylinder comprises a cylinder housing and a bolt arranged inside the cylinder housing; when a legal key is inserted into the bolt and turned with force, the bolt is unlocked and configured to rotate inside the cylinder housing; the end of the transmission rod passes through the rotating member and is connected to the bolt; the bolt and the transmission rod are not synchronously rotated, and a non-synchronous rotation range has a central angle of greater than or equal to 90° and less than or equal to 180°; and rotatory central lines of the bolt, the transmission rod, the rotating member, and the rotating disc overlap.
6 . The door lock according to claim 5 , wherein a pair of horns for positioning are arranged on both sides of an outer side of the annular body of the positioning member; an extension arm is arranged on the rotating member; the extension arm extends into a space between the pair of horns; when the rotating member rotates forward or backward to allow the extension arm to abut against one of the pair of horns, the rotating member further drives the transmission rod to rotate forward or backward, wherein the latch is allowed to be in a retracted state or an extended state; and wherein the extension arm moves to a position that synchronously represents the latch in the retracted state or the extended state.
7 . The door lock according to claim 6 , further comprising a position sensor and a trigger for matching use; the trigger is arranged on the extension arm; when the extension arm moves to a position representing the latch in the retracted state or the extended state, the position sensor is triggered by the trigger and sends a position signal to the controller, and the controller controls the drive motor to stop based on the position signal.
8 . The door lock according to claim 7 , further comprising a circuit board, wherein the circuit board is arranged above the rotating member and fixedly connected to the first housing; the position sensor is arranged on the circuit board; the circuit board is provided with an avoidance hole; and the circuit board is sleeved on the annular body of the positioning member through the avoidance hole, wherein the trigger is allowed to approach the position sensor.
9 . The door lock according to claim 8 , further comprising an outside-door module; wherein the outside-door module comprises the first housing, the rotating disc, the rotating member, the positioning member, the circuit board, the lock cylinder, and the drive motor; the first housing comprises a first upper housing and a first lower housing; the first upper housing and the first lower housing are mutually fastened together to form an accommodation cavity between the first upper housing and the first lower housing; the rotating disc, the rotating member, the positioning member, the circuit board, the lock cylinder, and the drive motor are accommodated in the accommodation cavity; the rotating disc is rotatably arranged on the bottom plate central hole of the first lower housing; the rotating member is rotatably arranged on the rotating disc; the drive motor is fixed on the first upper housing; and the first housing is configured to be attached to and installed on an outer side of the door leaf.
10 . The door lock according to claim 1 , further comprising an inside-door module; wherein the inside-door module comprises a second housing; the second housing comprises a second base plate and a second face cover plate that are mutually fastened together; a manual knob is installed on the second face cover plate; the manual knob is in a transmission connection with an end of the transmission rod; when the manual knob is manually rotated inside the door, the manual knob is configured to drive the transmission rod to rotate forward or backward, wherein the latch is driven to retract or extend.
11 . The door lock according to claim 10 , further comprising a main magnetic component and a secondary magnetic group; wherein the main magnetic component and the secondary magnetic group are arranged on the inside-door module or the manual knob in an alternative manner; the secondary magnetic group comprises a first magnetic component and a second magnetic component, wherein the first magnetic component and the second magnetic component are configured to be magnetically paired with the main magnetic component, respectively; from a top view, the first magnetic component and the second magnetic component are spaced apart; the first magnetic component is configured to be magnetically absorbed to the main magnetic component when the manual knob is rotated to a first position for driving the latch to retract, wherein the manual knob is kept at the first position; and the second magnetic component is configured to be magnetically absorbed to the main magnetic component when the manual knob is rotated to a second position for driving the latch to extend, wherein the manual knob is kept at the second position.
12 . The door lock according to claim 11 , further comprising a pair of first magnetic components, wherein from a top view, the pair of first magnetic components are located on a straight line and are spaced apart on both sides of the second magnetic component; the second magnetic component is located on a straight line perpendicular to a line connecting the pair of first magnetic components and passing through a midpoint of the line; a central angle, taking a rotatory central line passing through the manual knob as a circle center, between the second magnetic component and any one of the pair of first magnetic components is Φ; or further comprising a pair of second magnetic components, wherein from a top view, the pair of second magnetic components are located on a straight line and are spaced apart on both sides of the first magnetic component; the first magnetic component is located on a straight line perpendicular to a line connecting the pair of second magnetic components and passing through a midpoint of the line; a central angle, taking a rotatory central line passing through the manual knob as a circle center, between the first magnetic component and any one of the pair of second magnetic components is Φ.
13 . The door lock according to claim 12 , wherein the lock body further comprises a handle for pushing the latch to retract or extend, and the handle is in a transmission connection with the transmission rod; and the lock body further comprises a limiting mechanism, and the limiting mechanism is configured to constrain the handle to swing within an angle range of 0 to 10 degrees added based on Φ.

Description

CROSS-REFERENCE TO THE RELATED APPLICATIONS This application is based upon and claims priority to Chinese Patent Application No. 202422597567.3, filed on Oct. 25, 2024; and Chinese Patent Application No. 202520232255.4, filed on Feb. 13, 2025, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present invention relates to the technical field of locks, and in particular to a door lock with both manual and electric unlocking functions. BACKGROUND In today's society, a preference for intelligent electronic products has become increasingly significant, and there is no shortage of intelligent electronic locks on the market. These locks typically rely on electric drive mechanisms to achieve unlocking and locking functions. Intelligence brings convenient and user-friendly experiences, but the imperceptible nature of lock management can lead to a lack of security among certain groups, especially the elderly, resulting in resistance to intelligent electronic locks. To balance the needs of different user groups, various locks with both manual and electric unlocking functions have emerged on the market. For example, Chinese Patent 201811178332.3 discloses a door lock assembly, and the door lock assembly includes a front key slot section, a rear controller section, and a latch section. The latch section includes a retractable latch. The front key slot section includes a lock head, and the lock head is provided with a keyhole for receiving a key and a driver. The key is configured to drive the latch to extend or retract by operating the driver 72. The rear controller section includes a motor, a transmission device, a driver coupling, and a user device, and the driver coupling and the user device respectively are radially linked to the driver. The transmission device includes a main gear with a recess. The driver coupling is received in the recess, and a gap is formed between the recess and the driver coupling, so that the driver coupling can rotate relative to the main gear by a certain angle. The front key slot section further includes a digital keypad, which is configured to be engaged with the motor to drive the latch to extend or retract when the correct password is provided. Thus, the operation of one or more of the keys, the user device, and the motor 80 causes the driver to change a position and actuate the latch. SUMMARY Upon detailed analysis of the door lock assembly disclosed in Patent 201811178332.3, it was found that significant wobbling occurs during the rotation of the driver coupling. This phenomenon causes users to experience a notable sense of insecurity. In view of deficiencies of the prior art, the present invention provides a door lock with both manual and electric unlocking functions, including a lock body and a transmission rod; the lock body is provided with a latch for locking a door leaf; the transmission rod is in a transmission connection with the latch; when the transmission rod is manually or electrically driven to rotate forward or backward, the transmission rod can drive the latch of the lock body to retract or extend, thereby achieving opening or closing of the door leaf; the door lock further includes a first housing, a rotating disc rotatably arranged on the first housing, and a rotating member; rotatory central lines of the transmission rod, the rotating disc, and the rotating member overlap; the transmission rod is in a transmission connection with the rotating member; a misalignment device is arranged between the rotating disc and the rotating member; the misalignment device includes an idling area and a block extending into the idling area; the block can move within the idling area; the idling area and the block are arranged at the rotating disc or the rotating member in an alternative manner; when the transmission rod is manually driven to rotate forward or backward, thereby driving the rotating member to rotate forward or backward, the idling area provides a sufficient moving space for the block, enabling the rotating member to rotate relative to the rotating disc; the door lock further includes a controller and a drive motor communicated with the controller; the drive motor is configured to drive the rotating disc to rotate and is fixed on the first housing; when the controller receives an indication signal for opening or closing a door, the controller can control the drive motor to drive the rotating disc to rotate forward or backward; the rotating disc rotating forward or backward can, with the help of the misalignment device, drive the rotating member to rotate forward or backward; the rotating member rotating forward or backward further drives the transmission rod to rotate forward or backward, thereby achieving the opening or closing of the door; the door lock further includes a positioning member fixedly arranged on the first housing; the positioning member is arranged above the rotating disc; the rotating member is arranged between the