A door lock planetary clutch device

Abstract

A door lock planetary clutch device, comprising: a bracket, a planetary assembly arranged in the bracket, an output shaft arranged on the top of the planetary assembly, and a driving gear arranged in the planetary assembly, the planetary assembly comprising an inner gear and a planetary gear meshing with each other, the planetary gear being rotationally arranged in a gear carrier; the planetary gear has an outer tooth portion and a cam arm at the top of the outer tooth portion; the outer tooth portion is meshed with the driving gear, and the cam arm is arranged to be meshed with the inner teeth of the inner gear. The device realizes full-process automatic control of the clutch function through motor driving, completely gets rid of the traditional manual operation mode, can seamlessly dock the intelligent needs such as remote control and timing opening and closing in the intelligent door lock scene, and the user can complete the lock state switching without touching the mechanical parts, greatly improving the use convenience and technological experience.

Description

Technical Field

[0001] This utility model relates to the field of door locks, and in particular to a planetary clutch device for door locks. Background Technology

[0002] Door locks are an essential security device and are indispensable in daily life and social activities. Security is the core function of door locks. They can effectively prevent unauthorized personnel from entering the house, prevent theft, robbery and other illegal and criminal activities, and protect the safety of people and property in spaces such as homes and offices. For example, in the home, door locks can prevent strangers from breaking in at will, and in commercial places, door locks can protect valuable goods and important documents.

[0003] Currently in the door lock industry, traditional clutch structures typically require manual operation or complex mechanical structures to achieve the clutch function. This design not only increases manufacturing costs but may also lead to inconvenience in operation and reliability issues. In existing technologies, clutch structures mostly use springs, cams, or other mechanical components, which are prone to wear and tear due to long-term use, resulting in performance degradation or failure. In addition, traditional clutch structures are insufficient in terms of automation and cannot meet the high requirements of modern door locks for intelligence and automation. Therefore, developing a new door lock structure that is simple in structure, highly reliable, and capable of automatic clutching is of great significance. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems and provide a planetary clutch device for door locks.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted:

[0006] A planetary clutch device for a door lock includes: a bracket, a planetary assembly disposed within the bracket, an output shaft disposed on top of the planetary assembly, and a drive gear disposed within the planetary assembly. The planetary assembly includes an internal gear and a planetary gear that mesh with each other. The planetary gear is rotatably disposed within a gear carrier. The planetary gear has an external tooth portion and a cam arm located at the top of the external tooth portion. The external tooth portion meshes with the drive gear, and the cam arm is configured to mesh with the internal teeth of the internal gear.

[0007] Preferably, an elastic washer is provided between the bottom of the gear carrier of the planetary assembly and the support. More preferably, a washer is provided at the bottom edge of the gear carrier of the planetary assembly for adjusting the axial height of the planetary gear.

[0008] Preferably, a drive motor that rotates coaxially with the drive gear is provided below the drive gear. More preferably, the internal gear is formed on the inner circumference of the bottom of the output shaft.

[0009] Optionally, the drive gear passes through the bracket and the gear carrier and meshes with the external teeth of the planetary gear.

[0010] Preferably, the system further includes a mounting bracket, which is interlocked with the support bracket to hold the planetary assembly between them.

[0011] Preferably, the device further includes a door lock body, the door lock body including a base plate, the front of which is connected to a housing; the bracket, a planetary assembly disposed within the bracket, an output shaft disposed on top of the planetary assembly, and a drive gear disposed within the planetary assembly are all disposed on the base plate. More preferably, a battery is connected to one side of the base plate, and the housing is located on its side relative to the base plate and has a knob, the knob being rotatably disposed on the housing, and the knob rotating coaxially with the drive gear.

[0012] The planetary assembly has a planetary shaft mounted on its gear carrier, and the planetary gears are rotatably mounted on the gear carrier via the planetary shafts.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. The clutch function is fully automated through motor drive, completely eliminating the traditional manual operation mode. In smart door lock scenarios, it can seamlessly connect with intelligent needs such as remote control and timed opening and closing. Users do not need to touch mechanical parts to switch lock states, greatly improving the convenience and technological experience.

[0015] 2. The combination design of planetary gears and brackets reduces the number of complex mechanical parts in traditional clutch structures, thereby lowering manufacturing costs.

[0016] 3. The mechanical structure has been simplified, reducing the risk of failure due to component wear and improving overall reliability.

[0017] 4. Supports forward and reverse operation of the motor, and the clutch state can be flexibly controlled according to actual needs.

[0018] 5. This structure can be widely used in various door lock systems, especially smart door locks, to enhance their intelligence level and market competitiveness.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a three-dimensional structural diagram of the planetary clutch structure of the door lock in this application.

[0022] Figure 2 This is an exploded view of the planetary clutch structure of the door lock in this application.

[0023] Figure 3 This is a diagram of a planetary component in a door lock planetary clutch device.

[0024] Figure 4 This is a cross-sectional view of the clutch structure in a planetary clutch device for a door lock.

[0025] Figure 5 This is a diagram showing the clutch coupling state of the clutch structure in a planetary clutch device for a door lock.

[0026] Figure 6 This is a diagram showing the clutch decoupling state of the clutch structure in a planetary clutch device for a door lock.

[0027] Figure 7 This is a three-dimensional structural diagram of the output shaft in a planetary clutch device for a door lock.

[0028] Figure 8 This is a three-dimensional structural diagram of a knob in a planetary clutch mechanism for a door lock.

[0029] Figure 9 This is a three-dimensional structural diagram of the outer shell of a planetary clutch device for a door lock. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model and should not be construed as limiting this utility model.

[0031] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components, nor does it exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any unit and all combinations of one or more associated listed items.

[0032] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0033] According to one embodiment of the present invention, in conjunction with Figure 1-9 A planetary clutch device for a door lock includes: a door lock body 1 and a planetary assembly 104 and an output shaft 102 sequentially arranged on the door lock body 1. The door lock body 1 has a drive gear 202 inside and a bracket 106 below the door lock body 1. The planetary assembly 104 is arranged between the output shaft 102 and the input drive gear 202.

[0034] The planetary assembly 104 includes an internal gear 107 and a planetary gear 108 that mesh and drive each other. A drive motor 2, coaxially rotating with the drive gear 202, is located below the drive gear 202. When the drive motor 2 rotates, the drive gear 202, coaxially connected to it, rotates synchronously, thereby outputting torque. The internal gear 107 is formed on the inner circumference of the bottom of the output shaft 102 and has internal teeth (not labeled).

[0035] Preferably, there are multiple, such as three, planetary gears 108, and all planetary gears 108 are rotatably mounted in a single frame, such as a gear carrier 1082, so as to ensure the relative positional relationship between the multiple planetary gears 108, allowing them to rotate freely and also revolve.

[0036] The planetary gear 108 has an external tooth portion 1083 and a cam arm 1085 located at the top of the external tooth portion 1083. The cam arm 1085 can mesh with the internal gear teeth of the internal gear 107. The internal gear 107 is located on the bottom inner side of the output shaft 102.

[0037] By utilizing the unique rotation and revolution characteristics of the planetary gear 108, combined with the design of the internal gear 107 on the bottom inner side of the cam arm and output shaft 102, the output shaft 102 can be flexibly switched between mechanical locking and free rotation (i.e., a clutch function). When the drive gear 202 rotates forward, its rotation drives the rotation of multiple, such as three, planetary gears 108. During the rotation of the planetary gear 108, the cam arm 1085 engages with the internal teeth of the internal gear 107, thereby locking the internal gear 107 and preventing it from rotating. This, in turn, also locks the output shaft 102, ultimately locking it and enabling power transmission. When the drive gear 202 rotates in the reverse direction, the cam arm disengages from the internal teeth of the internal gear 107, releasing the lock and allowing it to be switched to manual operation or standby mode, meeting diverse usage needs and improving the system's flexibility and practicality. The above structure also forms a clutch structure to achieve meshing transmission or clutch effect between the drive gear 202 and the output shaft 102 (the state in which the drive gear 202 cannot transmit torque to the output shaft 102).

[0038] Preferably, the planetary assembly 104 further includes a support 106, through which the drive gear 202 passes and meshes with the planetary gear 108. An elastic washer 105 is provided between the bottom of the gear carrier 1082 and the support 106 of the planetary assembly 104. The elastic washer 105 increases the friction between the gear carrier 1082 and the support 106, thereby preventing the planetary gear 108 from prematurely revolving.

[0039] In other words, the elastic shim 105 provides elastic support to prevent the planetary gear 108 from idling and wobbling. In addition, the internal gear 107 is preferably evenly distributed along the circumference of the drive gear 202. The fixing bracket 101 ensures the coaxiality of the output shaft 102, and the bracket 106 serves as the mounting base for the planetary gear 108, ensuring the stable operation of the transmission system.

[0040] In addition, a washer 103 is provided at the bottom edge of the gear carrier 1082 of the planetary assembly 104. The washer 103 can adjust the axial height of the planetary gear 108, thereby ensuring not only that the outer teeth 1083 of the planetary gear 108 meshes correctly with the drive gear 202, but also that the cam arm 1085 of the planetary gear 108 meshes normally with the internal teeth used to ensure that the cam arm meshes with the internal gear 107.

[0041] The bracket 106 and the fixing frame 101 are interlocked and installed, thereby placing the planetary assembly 104 between them.

[0042] In one embodiment, the door lock body 1 includes a base plate 3, and a housing 303 is connected to the front of the base plate 3. The connection between the base plate 3 and the housing 303 forms a closed cavity, which can effectively prevent the intrusion of external substances such as dust, water vapor, and corrosive gases, avoiding damage to internal precision components such as the drive motor 2 and planetary gears 108 due to environmental factors, reducing the risk of component aging and failure, and extending the service life of the door lock. A battery 301 is connected to one side of the base plate 3. The housing 303 is located on its side relative to the base plate 3 and is provided with a knob 302. The knob 302 is rotatably mounted on the housing 303, and the knob 302 is connected to the drive gears. The wheel 202 is connected, and a rotatable knob 302 is provided on the side of the housing 303 and connected to the drive gear 202. When the door lock cannot be electrically unlocked due to power failure, motor failure, or other reasons, the user can manually turn the knob 302 to directly drive the drive gear 202, which in turn drives the planetary gear 108 system to operate, realize the extension and retraction of the bolt, and complete the unlocking or locking action. This ensures that the user can still use the door lock normally under special circumstances, improving the reliability and practicality of the door lock. The planetary assembly 104 has a planetary shaft 110 on the gear carrier 1082, and the planetary gear 108 is rotatably mounted in the gear carrier 1082 through the planetary shaft 110.

[0043] The working principle of this utility model is as follows: After the drive motor 2 is powered on, it drives the drive gear 202 to rotate clockwise or counterclockwise. The drive gear 202 meshes with the external teeth 1083 of the planetary gear 108, thereby transmitting torque to the planetary gear 108. The drive gear 202 is installed in the gear carrier 1082 through the planetary shaft 110 and can rotate and revolve simultaneously. When the drive gear 202 drives the planetary gear 108 to rotate, the cam arm structure of the planetary gear 108 changes with the rotation angle, gradually approaching or moving away from the output shaft 102. When the drive gear 202 rotates in the forward direction, the planetary gear 108 rotates and drives the cam arm to rotate towards the inner gear 107. After the inner gear teeth of the inner gear 107 mesh with the cam arm 1085 of the planetary gear 108, since the planetary gears 108 are evenly distributed circumferentially, when the cam arms 1085 of multiple planetary gears 108 simultaneously engage with the inner gear teeth of the inner gear 107, the output shaft 102 is mechanically locked and cannot rotate freely. At this time, the planetary gear 108... The planetary gear 108, together with the planetary support 106, drives the output shaft 102 to rotate synchronously, transmitting the motor power to the locking tongue and other actuators to complete the locking or unlocking action. When the input drive gear 202 rotates in the opposite direction, the cam arm of the planetary gear 108 rotates away from the internal gear 107, and the cam arm gradually disengages from the internal gear 107. The output shaft 102 is unlocked and returns to a free rotation state. At this time, the output shaft 102 is disengaged from the planetary gear 108, the motor power is no longer transmitted, and the lock enters a manually operable or standby state. The elastic washer 105 provides elastic support, so that the planetary assembly 104 and the support 106 maintain appropriate friction, preventing the planetary gear 108 from shaking when idling. The elastic washer 105 restricts the axial displacement of the planetary assembly 104, ensuring the alignment accuracy of the cam arm of the planetary gear 108 and the internal gear 107. The fixed bracket 101 supports the output shaft 102 to ensure its rotational coaxiality. The support 106 serves as the mounting base for the planetary gear 108, ensuring the stability of the transmission system.

[0044] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0045] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A planetary clutch device for a door lock, comprising: The system comprises a support, a planetary assembly disposed within the support, an output shaft disposed on top of the planetary assembly, and a drive gear disposed within the planetary assembly. The planetary assembly includes a meshing internal gear and a planetary gear, the planetary gear being rotatably disposed within a gear carrier. The planetary gear is characterized in that: the planetary gear has an external tooth portion and a cam arm located at the top of the external tooth portion; the external tooth portion meshes with the drive gear, and the cam arm is configured to mesh with the internal teeth of the internal gear.

2. The planetary clutch device for door locks according to claim 1, characterized in that: An elastic gasket is provided between the bottom of the gear carrier of the planetary assembly and the support.

3. The planetary clutch device for door locks according to claim 2, characterized in that: A washer is provided at the bottom edge of the gear carrier of the planetary assembly for adjusting the axial height of the planetary gear.

4. The planetary clutch device for door locks according to claim 1, characterized in that: Below the drive gear is a drive motor that rotates coaxially with the drive gear.

5. The planetary clutch device for door locks according to claim 4, characterized in that: The internal gear is formed on the bottom inner circumference of the output shaft.

6. The planetary clutch device for door locks according to claim 1, characterized in that: The drive gear passes through the bracket and the gear carrier and meshes with the external teeth of the planetary gear.

7. The planetary clutch device for door locks according to claim 1, characterized in that: It further includes a mounting bracket, which is interlocked with the support frame to hold the planetary assembly between them.

8. The planetary clutch device for door locks according to claim 1, characterized in that: The device further includes a door lock body, which includes a base plate and a housing connected to the front of the base plate; the bracket, a planetary assembly disposed within the bracket, an output shaft disposed on the top of the planetary assembly, and a drive gear disposed within the planetary assembly are all disposed on the base plate.

9. The planetary clutch device for door locks according to claim 8, characterized in that: A battery is connected to one side of the base plate, and the outer casing is located on its side relative to the base plate and is provided with a knob. The knob is rotatably mounted on the outer casing and rotates coaxially with the drive gear.

10. The planetary clutch device for door locks according to claim 1, characterized in that: The planetary assembly has a planetary shaft mounted on its gear carrier, and the planetary gears are rotatably mounted on the gear carrier via the planetary shafts.

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