Electronic door lock driving device

Abstract

The utility model discloses an electronic door lock driving device, and belongs to the technical field of door locks, and the electronic door lock driving device is characterized by comprising a door lock body, the door lock body comprises a clutch mechanism, and the clutch mechanism comprises a friction disc, a pressing disc and a rotating rod; the driving motor comprises an input wheel; the gear reducing mechanism comprises an output gear and a driven part; the spring bolt comprises a first contact; the shell comprises a permanent magnet and a second contact; the rotating rod is provided with an electromagnet and a first spring, the friction disc is connected with the input wheel, the friction disc is fixedly connected with the pressing disc, the rotating rod is rotationally connected with the shell, and the spring bolt is in transmission with the driven component. According to the electronic door lock driving device, after the spring bolt is contracted in place, the driving motor is made to idle through the clutch mechanism, then the driving motor is controlled to stop rotating, stalling of the driving motor is prevented, damage to the internal structure of the driving motor is avoided, and therefore the service life of a door lock body is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of door locks, and in particular, relates to an electronic door lock driving device. Background Art

[0002] Electronic door locks are developing rapidly with the rapid progress of the times. Electronic door locks are an electronic product that controls the circuit or chip operation (access control system) through password input, thereby controlling the closing of the mechanical switch to complete the unlocking and locking tasks.

[0003] The existing Chinese patent with publication number CN217841199U discloses an electronic door lock and an electronic drive device thereof, wherein the electronic drive device includes a drive frame, a drive motor and a handle drive seat for connecting the door handle of the electronic door lock; the handle drive seat is rotatably mounted on the drive frame, the drive motor is mounted on the drive frame, and the output shaft of the drive motor is transmission-connected to the handle drive seat through a gear reduction mechanism.

[0004] Although the above-mentioned drive device makes the unlocking speed of the electronic door lock faster and the unlocking noise is small, which effectively improves the user experience, the drive motor of the drive device may continue to rotate after the lock tongue is retracted into place, causing the drive motor to stall and the internal structure to be damaged, thus affecting the service life of the door lock. Utility Model Content

[0005] The purpose of this application is to address the above-mentioned technical problems and to provide an electronic door lock drive device, which, after the lock tongue is retracted into place, first allows the drive motor to idle through a clutch mechanism, and then controls the drive motor to stop, thereby effectively preventing the drive motor from stalling and avoiding damage to its internal structure, thereby extending the service life of the door lock.

[0006] The present application provides an electronic door lock driving device, an electronic door lock driving device, including a door lock body, the door lock body including:

[0007] A clutch mechanism, comprising a friction plate, a pressure plate and a rotating rod;

[0008] A drive motor including an input wheel;

[0009] A gear reduction mechanism, including an output gear and a driven component;

[0010] A lock tongue, including a first contact;

[0011] A housing including a permanent magnet and a second contact;

[0012] Among them, the rotating rod is provided with an electromagnet and a first spring. When the first contact and the second contact are connected, the electromagnet is triggered to be energized. After the electromagnet is energized, it is connected to the permanent magnet, the friction plate is connected to the input wheel, the friction plate is fixedly connected to the pressure plate, the rotating rod is rotatably connected to the shell, and the lock tongue and the driven component are transmitted.

[0013] In the technical solution, a clutch mechanism with a friction disk, a pressure plate and a rotating rod is provided on the door lock body. When the door lock body needs to be unlocked, the driving motor is started, the driving motor drives the input wheel to rotate, the input wheel drives the friction disk on the clutch mechanism to rotate, the friction disk then drives the output gear on the gear reduction mechanism to rotate, the output gear makes the driven component work, and the lock tongue is retracted into the shell through the transmission between the driven component and the lock tongue. When the lock tongue is retracted to the limit position, the first contact on the lock tongue contacts the second contact on the shell, triggering the electromagnet on the rotating rod to be energized. After the electromagnet is energized, it is connected to the permanent magnet on the shell, so that one end of the electromagnet in the rotating rod contacts the permanent magnet, and the other end applies pressure to the pressure plate. After the pressure is applied, the pressure plate drives the friction disk and the input wheel to contact. The clutch mechanism is reset, so that the drive motor can transmit torque to the gear reduction mechanism through the clutch mechanism. Combined with the above technical features, after the lock tongue is retracted into place, the clutch mechanism can effectively prevent the drive motor from being blocked, and its internal structure from being damaged, thereby extending the service life of the door lock body.

[0014] Furthermore, the clutch mechanism comprises:

[0015] a second spring connected to the pressure plate;

[0016] A spring, which is mounted on the pressure plate;

[0017] A worm screw connected to the pressure plate;

[0018] A pressing block connected to the rotating rod;

[0019] Wherein, the pressing block cooperates with the spring sheet.

[0020] In the present technical solution, a spring is arranged on the clutch mechanism. When one end of the electromagnet in the rotating rod is energized, it approaches the permanent magnet, driving the pressure block on the other end of the rotating rod to rotate, so that the pressure block applies pressure to the spring installed on the pressure plate. After the spring is subjected to pressure, it drives the second spring to contract. After the second spring contracts, it drives the friction plate and the input wheel to separate, so that the clutch mechanism disconnects the transmission between it and the drive motor, making the drive motor idle, preventing the drive motor from stalling and causing damage to the internal part of the door lock body. A worm is also connected to the pressure plate, which facilitates the transmission between the clutch mechanism and the gear reduction mechanism.

[0021] Furthermore, the gear reduction mechanism comprises:

[0022] A worm wheel, which transmits power to the worm;

[0023] A first double gear, which transmits power to the worm gear;

[0024] A second duplex gear, which transmits power to the first duplex gear;

[0025] Wherein, the second duplex gear is transmitted to the output gear.

[0026] In the present technical solution, a worm gear is arranged in the gear reduction mechanism, and transmission is performed between the worm gear and the worm on the clutch mechanism, and between the worm gear and the first double gear, between the first double gear and the second double gear, and between the second double gear and the output gear. During the transmission process, the number of gear teeth gradually increases, so that the output gear can be fully decelerated, and the output gear can be unlocked by rotating a smaller number of circles, and the unlocking speed is faster, thereby improving the user's unlocking experience. The door lock body is unlocked by gear transmission, and it will not self-lock internally, which is convenient for the user to unlock with a mechanical key when the drive motor is abnormal.

[0027] Furthermore, the driven component includes:

[0028] The turntable comprises a first square shaft, a first square hole and a first push block;

[0029] A second square shaft, which is matched with the first square hole;

[0030] Wherein, the output gear is provided with a second push block, the rotating disk is rotationally connected to the output gear, and the second push block is matched with the first push block.

[0031] In the present technical scheme, a turntable with a first square shaft, a first square hole and a first push block is provided on the driven component, and the turntable is rotatably connected with the output gear. When the output gear rotates, it drives the second push block to push the first push block, so that the turntable also rotates. The turntable drives the lock tongue to retract into the shell through the transmission between the turntable and the lock tongue. Combined with the transmission relationship of each component, that is, the door lock body can be unlocked by rotating the driving motor. A second square shaft is also provided on the driven component. The first square shaft and the second square shaft are not only convenient for users to assemble the door lock body, but also have a square shape, which enhances the transmission effect of the internal parts of the door lock body, thereby improving the unlocking efficiency of the door lock body.

[0032] Furthermore, the housing comprises:

[0033] A second square hole, which is rotatably connected to the shell;

[0034] The lock core transmits power to the lock tongue;

[0035] Wherein, the second square hole is transmitted with the lock tongue, and the second square hole is matched with the first square shaft.

[0036] In the present technical solution, a second square hole is rotatably connected to the shell, and the second square hole cooperates with the first square shaft. When the driving motor rotates, it drives the first square shaft to rotate, and the first square shaft drives the second square hole to rotate. The second square hole and the lock tongue are transmitted, so that the lock tongue can be retracted into the shell through the rotation of the second square hole to complete the unlocking. A lock core is also provided on the shell, and transmission is between the lock core and the lock tongue. When the driving motor fails and cannot be used, the user can also use the cooperation between the mechanical key and the lock core to retract the lock tongue into the shell through the rotation of the lock core to complete the unlocking.

[0037] Furthermore, the housing is also provided with a handle and buttons;

[0038] Wherein, the handle is connected to the second square axis, and the button is connected to the driving motor.

[0039] In the present technical solution, a handle and a button are provided on the shell, wherein the handle is connected to the second square shaft and the handle is placed indoors. When the user needs to unlock the door indoors, the user turns the handle, and the handle drives the second square shaft to rotate, and the second square shaft drives the second square hole to rotate, and the second square hole drives the lock tongue to retract through transmission to complete the indoor unlocking. The button is connected to the drive motor and the button is placed outdoors. When the user needs to unlock the door outdoors, the user inputs the correct password through the button, transmits a signal to the drive motor, and causes the drive motor to rotate. The drive motor drives the second square hole to rotate through transmission, and the second square hole drives the lock tongue to retract into the shell to complete the outdoor unlocking.

[0040] The beneficial effects of this application are:

[0041] 1. When the door lock body is unlocked, the drive motor rotates to drive the lock tongue to retract into the shell. At this time, the first contact is connected with the second contact, triggering the electromagnet to be energized. One end of the electromagnet of the rotating rod contacts the permanent magnet, and the other end applies pressure to the pressure plate, so that the pressure plate drives the friction plate to separate from the input wheel, causing the drive motor to idle, thereby preventing the drive motor from being blocked and avoiding damage to the internal structure of the door lock body.

[0042] 2. When one end of the electromagnet in the rotating rod is energized, it approaches the permanent magnet, causing the pressure block at the other end of the rotating rod to apply pressure to the spring leaf. The pressure on the spring leaf drives the second spring to contract, and the contraction of the second spring drives the friction plate and the input wheel to separate, so that the clutch mechanism disconnects the transmission between it and the drive motor, and a worm is connected to the pressure plate to facilitate the transmission between the clutch mechanism and the gear reduction mechanism.

[0043] 3. The gears inside the gear reduction mechanism transmit to each other, and the number of gear teeth gradually increases during the transmission process, so that the output gear can be fully decelerated and can be unlocked by turning fewer circles, thereby improving the unlocking speed and thus improving the user's unlocking experience. The door lock body is unlocked through gear transmission, and it will not self-lock inside, so that the user can unlock it with a mechanical key when the drive motor is abnormal. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the structure of an electronic door lock driving device of the present application;

[0045] Figure 2 for Figure 1 A magnified view of point A;

[0046] Figure 3 It is a structural schematic diagram of the driven component;

[0047] Figure 4 It is a schematic diagram of the structure inside the door lock body;

[0048] Figure 5 It is a schematic diagram of the structure of the exterior of the door lock body;

[0049] Reference numerals in the figure are: 100, door lock body; 200, clutch mechanism; 210, friction plate; 220, pressure plate; 230, rotating rod; 231, electromagnet; 232, first spring; 240, second spring; 250, leaf spring; 260, worm; 270, pressure block; 300, drive motor; 310, input wheel; 400, gear reduction mechanism; 410, output gear; 411, second push block; 420, from Moving part; 421, turntable; 422, second square shaft; 423, first square shaft; 424, first square hole; 425, first push block; 430, worm gear; 440, first double gear; 450, second double gear; 500, lock tongue; 510, first contact; 600, housing; 610, permanent magnet; 620, second contact; 630, second square hole; 640, lock core; 650, handle; 660, button. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0051] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0052] The following provides a detailed description of the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0053] Embodiment 1:

[0054] like Figure 1-5 As shown, the embodiment of the present application provides an electronic door lock driving device, including a door lock body 100, and the door lock body 100 includes:

[0055] The clutch mechanism 200 includes a friction plate 210, a pressure plate 220 and a rotating rod 230;

[0056] The driving motor 300 includes an input wheel 310;

[0057] The gear reduction mechanism 400 includes an output gear 410 and a driven component 420;

[0058] The locking tongue 500 includes a first contact 510;

[0059] The housing 600 includes a permanent magnet 610 and a second contact 620;

[0060] Among them, the rotating rod 230 is provided with an electromagnet 231 and a first spring 232. When the first contact 510 and the second contact 620 are connected, the electromagnet 231 is triggered to be energized. After being energized, the electromagnet 231 is connected to the permanent magnet 610, the friction plate 210 is connected to the input wheel 310, the friction plate 210 and the pressure plate 220 are fixedly connected, the rotating rod 230 and the housing 600 are rotationally connected, and the lock tongue 500 and the driven component 420 are transmitted.

[0061] By setting a clutch mechanism 200 with a friction plate 210, a pressure plate 220 and a rotating rod 230 on the door lock body 100, when the door lock body 100 needs to be unlocked, the driving motor 300 is started, the driving motor 300 drives the input wheel 310 to rotate, the input wheel 310 drives the friction plate 210 on the clutch mechanism 200 to rotate, the friction plate 210 then drives the output gear 410 on the gear reduction mechanism 400 to rotate, the output gear 410 makes the driven component 420 work, and the driven component 420 and the lock tongue 50 are connected to each other. 0, so that the lock tongue 500 is retracted into the housing 600. When the lock tongue 500 is retracted to the limit position, the first contact 510 on the lock tongue 500 contacts the second contact 620 on the housing 600, triggering the electromagnet 231 on the rotating rod 230 to be energized. After the electromagnet 231 is energized, it is connected to the permanent magnet 610 on the housing 600, so that one end of the electromagnet 231 in the rotating rod 230 contacts the permanent magnet 610, and the other end applies pressure to the pressure plate 220. After the pressure is applied to the pressure plate 220, The friction disc 210 is driven to separate from the input wheel 310, so that the drive motor 300 is idle. The friction disc 210 is affected by the inertia force and will continue to rotate for a period of time to prevent the lock tongue 500 from resetting immediately and affecting the user's use. The drive motor 300 automatically stops after detecting the separation between the input wheel 310 and the friction disc 210 to reduce the waste of power. After the lock tongue 500 is reset, the first contact 510 is disconnected from the second contact 620, and the electromagnet 231 is separated from the permanent magnet 610 after power is off. The rotating rod 23 0 is reset by the first spring 232, and the pressure plate 220 is reset after losing pressure, driving the connection between the friction plate 210 and the input wheel 310, that is, the clutch mechanism 200 is reset, so that the drive motor 300 can transmit torque to the gear reduction mechanism 400 through the clutch mechanism 200. Combined with the above technical features, after the lock tongue 500 is retracted into place, the door lock body 100 can effectively prevent the drive motor 300 from being blocked through the clutch mechanism 200, avoiding damage to its internal structure, thereby extending the service life of the door lock body 100.

[0062] Furthermore, the clutch mechanism 200 includes:

[0063] A second spring 240 connected to the pressure plate 220;

[0064] A spring 250 mounted on the pressure plate 220;

[0065] A worm 260 connected to the pressure plate 220;

[0066] A pressing block 270 connected to the rotating rod 230;

[0067] The pressing block 270 cooperates with the spring leaf 250 .

[0068] By arranging a spring 250 on the clutch mechanism 200, one end of the electromagnet 231 in the rotating rod 230 approaches the permanent magnet 610 when energized, driving the pressure block 270 on the other end of the rotating rod 230 to rotate, so that the pressure block 270 applies pressure to the spring 250 installed on the pressure plate 220. After the spring 250 is under pressure, it drives the second spring 240 to contract. After the second spring 240 contracts, it drives the friction plate 210 and the input wheel 310 to separate, so that the clutch mechanism 200 disconnects the transmission between it and the drive motor 300, and makes the drive motor 300 idle, so as to prevent the drive motor 300 from stalling and causing damage to the inside of the door lock body 100. A worm 260 is also connected to the pressure plate 220, and the worm 260 facilitates the transmission between the clutch mechanism 200 and the gear reduction mechanism 400.

[0069] Furthermore, the gear reduction mechanism 400 includes:

[0070] The worm wheel 430 transmits power to the worm 260;

[0071] A first double gear 440, which transmits power to the worm gear 430;

[0072] A second double gear 450, which transmits power to the first double gear 440;

[0073] The second double gear 450 is coupled to the output gear 410 for transmission.

[0074] By setting a worm wheel 430 in the gear reduction mechanism 400, transmission is performed between the worm wheel 430 and the worm 260 on the clutch mechanism 200, and between the worm wheel 430 and the first double gear 440, between the first double gear 440 and the second double gear 450, and between the second double gear 450 and the output gear 410. The number of gear teeth gradually increases during the transmission process, so that the output gear 410 can be fully decelerated, and the output gear 410 can be unlocked by rotating a smaller number of circles, and the unlocking speed is faster, thereby improving the user's unlocking experience. The door lock body 100 is unlocked by gear transmission, and its interior will not self-lock, which is convenient for the user to unlock with a mechanical key when the drive motor 300 is abnormal.

[0075] Furthermore, the driven component 420 includes:

[0076] The rotating disk 421 includes a first square shaft 423, a first square hole 424 and a first push block 425;

[0077] A second square shaft 422, which cooperates with the first square hole 424;

[0078] The output gear 410 is provided with a second push block 411 , the rotating disk 421 is rotationally connected to the output gear 410 , and the second push block 411 is matched with the first push block 425 .

[0079] By arranging a turntable 421 with a first square shaft 423, a first square hole 424 and a first push block 425 on the driven component 420, the turntable 421 is rotatably connected to the output gear 410. When the output gear 410 rotates, the second push block 411 is driven to push the first push block 425, so that the turntable 421 also rotates. The turntable 421 drives the lock tongue 500 to retract into the shell 600 when rotating through the transmission between the turntable 421 and the lock tongue 500. Combined with the transmission relationship of each component, that is, the door lock body 100 can be unlocked by rotating the driving motor 300. A second square shaft 422 is also arranged on the driven component 420. The first square shaft 423 and the second square shaft 422 are not only convenient for users to assemble the door lock body 100, but also have a square shape, which enhances the transmission effect of the internal parts of the door lock body 100, thereby improving the unlocking efficiency of the door lock body 100.

[0080] Embodiment 2:

[0081] like Figure 1-5 As shown, the embodiment of the present application provides an electronic door lock driving device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The housing 600 includes:

[0082] The second square hole 630 is rotatably connected to the housing 600;

[0083] The lock core 640 transmits power to the lock tongue 500;

[0084] The second square hole 630 is transmitted to the locking tongue 500 , and the second square hole 630 is matched with the first square shaft 423 .

[0085] A second square hole 630 is rotatably connected to the shell 600, and the second square hole 630 cooperates with the first square shaft 423. When the driving motor 300 rotates, it drives the first square shaft 423 to rotate, and the first square shaft 423 drives the second square hole 630 to rotate. The second square hole 630 and the lock tongue 500 are transmitted, so that the lock tongue 500 can be retracted into the shell 600 through the rotation of the second square hole 630 to complete the unlocking. A lock core 640 is also provided on the shell 600. The lock core 640 and the lock tongue 500 are transmitted. When the driving motor 300 fails and cannot be used, the user can also use the cooperation between the mechanical key and the lock core 640 to retract the lock tongue 500 into the shell 600 through the rotation of the lock core 640 to complete the unlocking.

[0086] Furthermore, the housing 600 is also provided with a handle 650 and a button 660;

[0087] The handle 650 is connected to the second square shaft 422 , and the button 660 is connected to the driving motor 300 .

[0088] A handle 650 and a button 660 are provided on the shell 600, wherein the handle 650 is connected to the second square shaft 422 and the handle 650 is placed indoors. When the user needs to unlock the door indoors, the handle 650 is turned, and the handle 650 drives the second square shaft 422 to rotate, and the second square shaft 422 drives the second square hole 630 to rotate, and the second square hole 630 drives the lock tongue 500 to retract through transmission to complete the indoor unlocking. The button 660 is connected to the drive motor 300 and the button 660 is placed outdoors. When the user needs to unlock the door outdoors, the correct password is input through the button 660 to transmit a signal to the drive motor 300 to rotate the drive motor 300, and the drive motor 300 rotates, and the drive motor 300 rotates through transmission, and the second square hole 630 drives the lock tongue 500 to retract into the shell 600 to complete the outdoor unlocking.

[0089] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0090] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An electronic door lock driving device, comprising a door lock body (100), characterized in that: The door lock body (100) comprises: The clutch mechanism (200) comprises a friction plate (210), a pressure plate (220) and a rotating rod (230); A driving motor (300) comprising an input wheel (310); A gear reduction mechanism (400) includes an output gear (410) and a driven component (420); A locking tongue (500) comprising a first contact point (510); A housing (600) comprising a permanent magnet (610) and a second contact (620); The rotating rod (230) is provided with an electromagnet (231) and a first spring (232). When the first contact (510) and the second contact (620) are connected, the electromagnet (231) is triggered to be energized. After the electromagnet (231) is energized, it is connected to the permanent magnet (610), the friction disc (210) and the input wheel (310) are connected, the friction disc (210) and the pressure plate (220) are fixedly connected, the rotating rod (230) and the housing (600) are rotationally connected, and the locking tongue (500) and the driven component (420) are transmitted.

2. The electronic door lock driving device according to claim 1, characterized in that: The clutch mechanism (200) comprises: A second spring (240) connected to the pressure plate (220); A spring leaf (250) mounted on the pressure plate (220); A worm (260) connected to the pressure plate (220); A pressing block (270) connected to the rotating rod (230); Wherein, the pressing block (270) cooperates with the spring leaf (250).

3. The electronic door lock driving device according to claim 2, characterized in that: The gear reduction mechanism (400) comprises: A worm wheel (430) for transmission with the worm (260); A first double gear (440) for transmission with the worm gear (430); A second double gear (450) which transmits power to the first double gear (440); The second double gear (450) is driven by the output gear (410).

4. The electronic door lock driving device according to claim 3, characterized in that: The driven component (420) comprises: The rotating disk (421) includes a first square shaft (423), a first square hole (424) and a first push block (425); A second square shaft (422) that cooperates with the first square hole (424); The output gear (410) is provided with a second push block (411), the rotating disk (421) and the output gear (410) are rotationally connected, and the second push block (411) and the first push block (425) are matched.

5. The electronic door lock driving device according to claim 4, characterized in that: The housing (600) comprises: A second square hole (630) rotatably connected to the housing (600); A lock core (640) which transmits power to a lock tongue (500); The second square hole (630) is in transmission with the locking tongue (500), and the second square hole (630) is in cooperation with the first square shaft (423).

6. The electronic door lock driving device according to claim 5, characterized in that: The housing (600) is also provided with a handle (650) and a button (660); The handle (650) is connected to the second square shaft (422), and the button (660) is connected to the drive motor (300).

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