CN111535670A - A dual-motor dual-system intelligent door lock - Google Patents

Abstract

The invention relates to a dual-motor dual-system intelligent door lock, comprising a mounting plate, a lock shell fixedly connected to one side of the mounting plate, a plurality of lock heads, oblique tongues, a rack-type transmission part, a screw-type transmission part, and a control main board, The several lock heads are connected with the movable plate to form a linkage, and the rack-type transmission part and the screw-type transmission part can drive the lock heads to expand and contract through the control of the main board, so as to realize the opening and locking of the intelligent door lock. There is also an automatic retraction mechanism for the oblique tongue in the lock shell; the intelligent door lock is equipped with a double unlocking mechanism to ensure the reliability of the standby emergency unlocking, and there is also an automatic retraction mechanism for the oblique tongue in the lock shell, so that it can be unlocked when it is unlocked. It can automatically retract the oblique tongue and release it after opening the door, so that the oblique tongue can resume the function of hitting the lock door, which is more convenient to use.

Description

A dual-motor dual-system intelligent door lock

technical field

The invention relates to the technical field of door locks, in particular to a dual-motor dual-system intelligent door lock.

Background technique

This section is intended to provide a background or context for the embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section.

Currently known intelligent electronic door locks are constructed such that an intelligent electronic authentication-driven unlocking device and a mechanical key-driven unlocking device work together on the unlocking point of the same mechanical lock or its transmission mechanism, and any one of these two devices is used. Can be unlocked. Because the current electronic authentication drive unlocking method is convenient and quick to unlock and has good anti-theft performance, it is often used as the first choice for unlocking. However, the electronic authentication drive device belongs to electronic and electrical devices, and electronic and electrical devices may inevitably fail during use. Or when the power supply is interrupted, the door lock cannot be opened, so another unlocking device needs to be set up as a backup device; and because the mechanical key unlocking device has a relatively simple structure, no power supply, and low cost, it is selected as a backup unlocking device. , but the mechanical unlocking device is easy to be opened by technology, and the anti-theft performance is poor, so its existence greatly reduces the anti-theft performance and use value of the entire intelligent electronic door lock. Recently, some electronic door locks are also designed with another set of electronic unlocking device instead of mechanical key unlocking as a backup unlocking device, but it uses the same drive motor as the common device, and the motor is also an electronic and electrical device, so there are electronic appliances. When the fault occurs, the motor cannot be excluded, which affects the reliability of the standby emergency unlocking.

In addition, most smart electronic door locks on the market still need to manually depress the handle after unlocking to retract the oblique tongue to open the door, which is cumbersome because automatic unlocking is not fully realized. Therefore, it is necessary to improve and innovate.

SUMMARY OF THE INVENTION

Therefore, in the prior art, after unlocking, most smart electronic door locks still need to manually press the handle to retract the oblique tongue to open the door, which does not fully realize automatic unlocking, which is cumbersome and inconvenient to use.

To this end, the present invention solves the above problems, so that the smart door lock can automatically retract the oblique tongue when unlocking, and release it after opening the door, so that the oblique tongue can recover the function of hitting the lock door.

The technical solution of the present invention is to provide a dual-motor dual-system intelligent door lock, the technical solution of which is: comprising a mounting plate 1 , a lock shell 12 fixedly connected to one side of the mounting plate 1 , a plurality of lock heads 21 , and an oblique tongue 22 , the rack-type transmission part 3, the screw-type transmission part 4, the control main board 5, the several lock heads 21 are connected with the movable plate 6 through the connecting piece to form a linkage, the rack-type transmission part 3 and the screw-type transmission part 4. Through the control of the control board 5, the lock head 21 can be driven to extend and retract, so as to realize the opening and locking of the intelligent door lock; the lock shell 12 is also provided with an automatic retraction mechanism 7 of the oblique tongue;

The automatic retraction mechanism 7 of the oblique tongue includes a force-bearing plate 71 fixedly connected to the lock shell 12 , a sliding rod 72 fixedly connected to the bottom of the oblique tongue 22 , a "Z"-shaped connecting plate 73 , a hook of the oblique tongue 74 , and a ferromagnetic body 75 , a miniature electro-magnetic disk 76; the sliding rod 72 can slide up and down through the middle of the force plate 71, and a first coil spring is provided on the outer surface of the sliding rod 72, which is used to keep the oblique tongue 22 in an extended state, and the lower end of the sliding rod 72 The right side folded plate of the "Z"-shaped connecting plate 73 is fixedly connected, and the bottom of the right side folded plate is connected to the ferromagnetic body 75. The micro-electromagnetic disk 76 is arranged on the movable plate 6 through the fixed seat, and the micro-electromagnetic disk 76 is connected to the control motherboard 5 For electrical connection, the oblique tongue hook 74 is "L" shaped and can be rotatably sleeved on the shaft on the movable plate 6, and the oblique tongue hook 74 is opened at the position where it contacts the left folded plate of the "Z"-shaped connecting plate 73 There is a slot, and a first limit post 77 is fixed on the movable plate 6 on the left side of the left arm of the oblique tongue hook 74 to limit the rotation angle of the oblique tongue retractor 74. The first limit post 77 is connected to the oblique tongue retractor. A torsion spring 78 is arranged between 74, the torsion spring 78 provides a moment that makes the oblique tongue hook 74 rotate to the right, the lock shell 12 located under the right arm of the oblique tongue hook 74 is provided with a second limit post 79, and the movable plate 6 The position corresponding to the second limiting post 79 is provided with a vacating slot.

The working principle of the inclined tongue automatic retraction mechanism 7 is:

When the control main board 5 controls the rack-type transmission part 3 or the screw-type transmission part 4 to drive the lock head 21 to retract and unlock, the movable plate 6 moves down, and the control main board 5 energizes the micro-electromagnetic disk 76 to make it adsorb the ferromagnetic body 75. Drive the "Z"-shaped connecting plate 73 down, and the left end of the "Z"-shaped connecting plate 73 slides into the slot of the oblique tongue hook 74. At this time, the oblique tongue hook 74 also drives the "Z"-shaped connecting plate 73 to move down, The "Z"-shaped connecting plate 73 drives the oblique tongue 22 to move downward through the sliding rod 72 against the resistance of the first coil spring. The oblique tongue hook 74 can ensure the normal operation of the oblique tongue automatic retraction mechanism 7 when the micro-electromagnetic disk 76 fails. When the oblique tongue 22 moves down in place, the right arm of the oblique tongue hook 74 is supported by the second limit post 79, and the oblique tongue hook 74 rotates to the left to disengage the slot from the left end of the "Z"-shaped connecting plate 73. At this time, the micro-electromagnetic disk 76 still maintains the state of attracting the ferromagnetic body 75 after power-on. After the adsorption state is maintained for 2 seconds to 3 seconds, the micro-electromagnetic disk 76 is powered off to release the ferromagnetic body 75. At this time, the first coil spring makes the oblique tongue 22 restore the impact lock. function of the door.

The above-mentioned adsorption state is maintained for 2 seconds to 3 seconds, so that the oblique tongue 22 is released with a lag in order to leave the door open time for the user.

The screw-type transmission part 4 includes a carrier plate, a first transmission pair composed of a first motor and a threaded sleeve rod group, and a rack. The transmission pair and the rack are fixedly installed on the carrier plate, and the left side of the carrier plate is Connect the guide rail module, the guide rail module is fixed on the lock shell 12, the upper end of the inner threaded sleeve of the threaded rod group is fixedly connected with the movable plate 6 through the connecting piece, and the movement of the inner threaded sleeve The direction is the same as the expansion and contraction direction of the lock head 21; under the driving of the first transmission pair, the inner threaded sleeve drives the movable plate 6 to run up and down, and then drives the lock head 21 to perform telescopic action.

The rack-type transmission part 3 includes a second motor fixed on the lock housing 12 , the output shaft of the second motor is engaged with the rack through gears, and the movement direction of the rack is the same as the expansion and contraction direction of the lock head 21 . ; Driven by the second motor, the rack drives the screw-type transmission part 4 to move up and down as a whole, and then drives the lock head 21 to perform telescopic action.

The guide rail module can limit and guide the movement of the screw-type transmission part 4 to make its operation more accurate and stable.

The above-mentioned transmission structure in which the screw-type transmission part 4 and the rack-type transmission part 3 drive the lock head 21 to expand and contract has been described in another authorized patent of our company, whose patent number is "CN201620623750.9" and the patent name is " A dual-motor dual-system intelligent door lock", here for ease of understanding, the transmission principle is further described and disclosed.

In the preferred embodiment of the present invention, a spring buffer mechanism 8 is provided between the "Z"-shaped connecting plate 73 and the ferromagnetic body 75 .

In a preferred embodiment of the present invention, the spring buffer mechanism 8 includes a telescopic rod connected with the ferromagnetic body 75 and a telescopic spring 82 sheathed outside the telescopic rod.

When the control main board 5 controls the action of the rack-type transmission part 3 or the screw-type transmission part 4, after the first motor and the second motor complete the operation, there is a follow-up turning and positioning operation, which makes the movable plate 6 move up and down redundantly. , the above-mentioned spring buffer mechanism 8 is to compensate for this upward and downward adjustment.

In a preferred embodiment of the present invention, a rubber buffer 62 is provided at the position where the bottom of the movable plate 6 contacts the lower side plate of the lock shell 12 to avoid impact and wear caused by hard contact.

In a preferred embodiment of the present invention, a handle transmission pressure rod 9 is provided between the force receiving plate 71 and the "Z"-shaped connecting plate 73 .

Compared with the prior art, the beneficial effects that the present invention produces are:

(1) The dual-motor dual-system intelligent door lock of the present invention is provided with a dual unlocking mechanism to ensure the reliability of standby emergency unlocking.

(2) The dual-motor dual-system intelligent door lock of the present invention is also provided with an automatic retraction mechanism of the oblique tongue in the lock shell, so that the intelligent door lock can automatically retract the oblique tongue when it is unlocked, and is released after the door is opened, so that the oblique tongue can be automatically retracted. Restore the function of knock lock door, more convenient to use.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of the present invention.

Detailed ways

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

The present invention provides a dual-motor dual-system intelligent door lock, the specific structure of which is shown in FIG. 1 , including a mounting plate 1 , a lock shell 12 fixedly connected to one side of the mounting plate 1 , a plurality of lock heads 21 , oblique tongues 22 , The rack-type transmission part 3, the screw-type transmission part 4, the control main board 5, the several lock heads 21 are connected with the movable plate 6 through the connecting piece to form a linkage, the rack-type transmission part 3 and the screw-type transmission part 4 Through the control of the control board 5, the lock head 21 can be driven to extend and retract, so as to realize the opening and locking of the intelligent door lock; the lock shell 12 is also provided with an automatic retraction mechanism 7 of the oblique tongue;

The automatic retraction mechanism 7 of the oblique tongue includes a force-bearing plate 71 fixedly connected to the lock shell 12 , a sliding rod 72 fixedly connected to the bottom of the oblique tongue 22 , a "Z"-shaped connecting plate 73 , a hook of the oblique tongue 74 , and a ferromagnetic body 75 , a miniature electro-magnetic disk 76; the sliding rod 72 can slide up and down through the middle of the force plate 71, and a first coil spring is provided on the outer surface of the sliding rod 72, which is used to keep the oblique tongue 22 in an extended state, and the lower end of the sliding rod 72 The right side folded plate of the "Z"-shaped connecting plate 73 is fixedly connected, and the bottom of the right side folded plate is connected to the ferromagnetic body 75. The micro-electromagnetic disk 76 is arranged on the movable plate 6 through the fixed seat, and the micro-electromagnetic disk 76 is connected to the control motherboard 5 For electrical connection, the oblique tongue hook 74 is "L" shaped and can be rotatably sleeved on the shaft on the movable plate 6, and the oblique tongue hook 74 is opened at the position where it contacts the left folded plate of the "Z"-shaped connecting plate 73 There is a slot, and a first limit post 77 is fixed on the movable plate 6 on the left side of the left arm of the oblique tongue hook 74 to limit the rotation angle of the oblique tongue retractor 74. The first limit post 77 is connected to the oblique tongue retractor. A torsion spring 78 is arranged between 74, the torsion spring 78 provides a moment that makes the oblique tongue hook 74 rotate to the right, the lock shell 12 located under the right arm of the oblique tongue hook 74 is provided with a second limit post 79, and the movable plate 6 The position corresponding to the second limiting post 79 is provided with an escape groove.

The working principle of the inclined tongue automatic retraction mechanism 7 is:

When the control main board 5 controls the rack-type transmission part 3 or the screw-type transmission part 4 to drive the lock head 21 to retract and unlock, the movable plate 6 moves down, and the control main board 5 energizes the micro-electromagnetic disk 76 to make it adsorb the ferromagnetic body 75. Drive the "Z"-shaped connecting plate 73 down, and the left end of the "Z"-shaped connecting plate 73 slides into the slot of the oblique tongue hook 74. At this time, the oblique tongue hook 74 also drives the "Z"-shaped connecting plate 73 to move down, The "Z"-shaped connecting plate 73 drives the oblique tongue 22 to move downward through the sliding rod 72 against the resistance of the first coil spring. The oblique tongue hook 74 can ensure the normal operation of the oblique tongue automatic retraction mechanism 7 when the micro-electromagnetic disk 76 fails. When the oblique tongue 22 moves down in place, the right arm of the oblique tongue hook 74 is supported by the second limit post 79, and the oblique tongue hook 74 rotates to the left to disengage the slot from the left end of the "Z"-shaped connecting plate 73. At this time, the micro-electromagnetic disk 76 still maintains the state of attracting the ferromagnetic body 75 after power-on. After the adsorption state is maintained for 2 seconds to 3 seconds, the micro-electromagnetic disk 76 is powered off to release the ferromagnetic body 75. At this time, the first coil spring makes the oblique tongue 22 restore the impact lock. function of the door.

The above-mentioned adsorption state is maintained for 2 seconds to 3 seconds, so that the oblique tongue 22 is released with a lag in order to leave the door open time for the user.

The screw-type transmission part 4 includes a carrier plate, a first transmission pair composed of a first motor and a threaded sleeve rod group, and a rack. The transmission pair and the rack are fixedly installed on the carrier plate, and the left side of the carrier plate is Connect the guide rail module, the guide rail module is fixed on the lock shell 12, the upper end of the inner threaded sleeve of the threaded rod group is fixedly connected with the movable plate 6 through the connecting piece, and the movement of the inner threaded sleeve The direction is the same as the expansion and contraction direction of the lock head 21; under the driving of the first transmission pair, the inner threaded sleeve drives the movable plate 6 to run up and down, and then drives the lock head 21 to perform telescopic action.

The rack-type transmission part 3 includes a second motor fixed on the lock housing 12 , the output shaft of the second motor is engaged with the rack through gears, and the movement direction of the rack is the same as the expansion and contraction direction of the lock head 21 . ; Driven by the second motor, the rack drives the screw-type transmission part 4 to move up and down as a whole, and then drives the lock head 21 to perform telescopic action.

The guide rail module can limit and guide the movement of the screw-type transmission part 4 to make its operation more accurate and stable.

The above-mentioned transmission structure in which the screw-type transmission part 4 and the rack-type transmission part 3 drive the lock head 21 to expand and contract has been described in another authorized patent of our company, whose patent number is "CN201620623750.9" and the patent name is " A dual-motor dual-system intelligent door lock", here for ease of understanding, the transmission principle is further described and disclosed.

In the preferred embodiment of the present invention, a spring buffer mechanism 8 is provided between the "Z"-shaped connecting plate 73 and the ferromagnetic body 75 .

In a preferred embodiment of the present invention, the spring buffer mechanism 8 includes a telescopic rod connected with the ferromagnetic body 75 and a telescopic spring 82 sheathed outside the telescopic rod.

When the control main board 5 controls the action of the rack-type transmission part 3 or the screw-type transmission part 4, after the first motor and the second motor complete the operation, there is a follow-up turning and positioning operation, which makes the movable plate 6 move up and down redundantly. , the above-mentioned spring buffer mechanism 8 is to compensate for this upward and downward adjustment.

In a preferred embodiment of the present invention, a rubber buffer 62 is provided at the position where the bottom of the movable plate 6 contacts the lower side plate of the lock shell 12 to avoid impact and wear caused by hard contact.

In a preferred embodiment of the present invention, a handle transmission pressure rod 9 is provided between the force receiving plate 71 and the "Z"-shaped connecting plate 73 .

The above-mentioned embodiments are only preferred embodiments of the present invention to describe, and do not limit the concept and scope of the present invention. Various modifications and improvements made should fall within the protection scope of the present invention, and the technical content of the claimed protection of the present invention has been fully recorded in the technical requirements.

Claims (5)

1. A double-motor double-system intelligent door lock comprises a mounting plate (1), a lock shell (12) fixedly connected to one side of the mounting plate (1), a plurality of lock heads (21), an inclined bolt (22), a rack type transmission part (3), a screw type transmission part (4) and a control main plate (5), wherein the plurality of lock heads (21) are connected with a movable plate (6) through connecting pieces to form linkage, and the rack type transmission part (3) and the screw type transmission part (4) can drive the lock heads (21) to stretch and retract under the control of the control main plate (5) so as to realize the opening and locking of the intelligent door lock; the method is characterized in that: an oblique tongue automatic retraction mechanism (7) is also arranged in the lock shell (12);

the oblique tongue automatic retraction mechanism (7) comprises a stress plate (71) fixedly connected to the lock shell (12), a sliding rod (72) fixedly connected with the bottom of an oblique tongue (22), a Z-shaped connecting plate (73), an oblique tongue draw hook (74), a ferromagnetic body (75) and a miniature electromagnetic disc (76); the sliding rod (72) can be vertically slidably arranged in the middle of the stress plate (71) in a penetrating mode, a first spiral spring is sleeved outside the sliding rod (72), the lower end of the sliding rod (72) is fixedly connected with a right folded plate of a Z-shaped connecting plate (73), the bottom of the right folded plate is connected with a ferromagnetic body (75), a miniature electromagnetic disc (76) is arranged on the movable plate (6) through a fixed seat, the miniature electromagnetic disc (76) is electrically connected with the control main plate (5), the oblique tongue draw hook (74) is L-shaped and rotatably sleeved on a shaft rod on the movable plate (6), a clamping groove is formed in the position, in which the oblique tongue draw hook (74) is in contact with the left folded plate of the Z-shaped connecting plate (73), a first limiting column (77) is fixed on the movable plate (6) on the left side of the left arm of the oblique tongue draw hook (74) and used for limiting the rotating angle of the oblique tongue draw hook (74), and a torsion spring (78) is arranged between the first, the torsion spring (78) provides a moment for enabling the latch tongue draw hook (74) to rotate rightwards, the lock shell (12) positioned below the right arm of the latch tongue draw hook (74) is provided with a second limiting column (79), and the movable plate (6) is provided with a abdicating groove corresponding to the position of the second limiting column (79).

2. The dual-motor dual-system intelligent door lock of claim 1, wherein: a spring buffer mechanism (8) is arranged between the Z-shaped connecting plate (73) and the ferromagnetic body (75).

3. The dual-motor dual-system intelligent door lock of claim 2, wherein: the spring buffer mechanism (8) comprises a telescopic rod connected with the ferromagnetic body (75) and a second spiral spring sleeved outside the telescopic rod.

4. The dual-motor dual-system intelligent door lock of claim 1, wherein: and a rubber buffer pad (62) is arranged at the position where the bottom of the movable plate (6) is contacted with the lower side plate of the lock shell (12).

5. The dual-motor dual-system intelligent door lock of claim 1, wherein: a handle transmission pressure lever (9) is arranged between the stress plate (71) and the Z-shaped connecting plate (73).

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