Pushing device for a lock clutch mechanism

Abstract

The utility model discloses a kind of pushing device of lock clutch mechanism, including shell, setting in shell and can extend from the clutch movable part of shell and being arranged in shell: motor, its drive pivot rotates;Lower pusher;Upper pusher;Reset spring and magnetic assembly, magnetic assembly includes the upper, lower magnet in upper, lower pusher, and the magnetic pole of upper magnet and lower magnet is same in the adjacent end surface of upper pusher and lower pusher;Motor drives lower pusher to rotate, when upper magnet approaches or aligns lower magnet, upper pusher is away from lower pusher along pivot axial direction;Motor drives lower pusher to rotate again, when upper magnet is away from lower magnet, under the elastic force of reset spring, upper pusher moves close to lower pusher along pivot axial direction, to realize the engagement or separation of clutch movable part and external component.The utility model compared with prior art, with compact structure, wide adaptation scene, stable operation, control accurate and have the advantages such as emergency function.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a driving device for a lock clutch mechanism. Background Technology

[0002] In electronic locks, the clutch mechanism is the core component that enables power transmission and disengagement. Its performance directly determines the reliability, response speed, and user experience of the lock. Currently, common electric clutch drive methods are mainly divided into two categories: those using electric push rods or electromagnets, such as the scheme disclosed in Chinese invention patent application CN115653406A, which uses a motor to drive a rotating block and then uses magnetic force to attract or repel the moving block, thereby engaging or disengaging the clutch with external components.

[0003] However, existing magnetic drive solutions of this type only have one pair of magnets with opposite poles on each of the rotating and moving blocks. This configuration results in abrupt changes in magnetic force during operation, making it difficult to achieve smooth and precise adjustment of the engagement and disengagement force. This leads to a jarring sensation during engagement and disengagement, affecting the feel of operation and the lifespan of components. Furthermore, since the magnets with opposite poles are located in both the rotating and moving blocks, if the distance between the two magnets is too close, it affects the smoothness of the attraction and repulsion movements of the rotating and moving blocks. If the distance is too far, the size of the rotating and moving blocks will be relatively large, making this type of drive mechanism unsuitable for small lock bodies. Additionally, the components are installed within the lock body's cavity, and the presence of limiting parts within the cavity increases the difficulty of lock body manufacturing and reduces flexibility in adapting to different lock bodies. Moreover, the rotation angle control of the drive components is not precise enough, easily leading to cumulative errors, and there is a lack of a reliable manual operation interface in emergency situations such as power outages, thus its practicality needs improvement. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a push device for a lock clutch mechanism that is compact in structure, adaptable to a wide range of scenarios, operates smoothly, has precise control, and has an emergency function.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: This utility model discloses a driving device for a lock clutch mechanism, comprising: a housing, a clutch movable component disposed within the housing and extendable from the housing, and a motor disposed within the housing, which drives a rotating shaft to rotate; a lower pushing component connected to the rotating shaft and rotatable with the rotating shaft; an upper pushing component connected to the clutch movable component and movably sleeved on the rotating shaft; a return spring sleeved on the clutch movable component and acting on the upper pushing component; and a magnetic assembly including an upper magnet disposed in the upper pushing component and a lower magnet disposed in the lower pushing component. The upper magnet and the lower magnet have the same magnetic poles on the adjacent end faces of the upper and lower push members; the motor drives the lower push member to rotate, and when the upper magnet approaches or aligns with the lower magnet, under the action of magnetic force, the upper push member moves away from the lower push member along the axis of rotation; the motor drives the lower push member to rotate again, and when the upper magnet moves away from the lower magnet, under the action of the elastic force of the return spring, the upper push member moves closer to the lower push member along the axis of rotation, so as to realize the engagement or disengagement of the clutch movable member with the external component.

[0006] Furthermore, the housing includes a left cover and a right cover, which interlock to form a cavity.

[0007] Furthermore, the lower magnet is circumferentially asymmetrically distributed on the lower pusher, and the upper magnet is circumferentially asymmetrically distributed on the upper pusher.

[0008] Furthermore, the number of lower magnets is three, and the number of upper magnets is three.

[0009] Furthermore, the clutch actuator is provided with a guide hole that mates with the rotating shaft.

[0010] Furthermore, the lower pusher has a rotation limiting groove at its end near the motor, and a rotation limiting block is provided inside the housing, with the rotation limiting groove cooperating with the rotation limiting block.

[0011] Furthermore, the upper pushing member is provided with a limiting block, and the housing is provided with a corresponding first notch groove. The limiting block cooperates with the first notch groove to prevent the upper pushing member from circumferentially deflecting.

[0012] Furthermore, the upper pusher is provided with a connecting rod, and the housing is provided with a corresponding second notch. The connecting rod moves within the stroke defined by the second notch. In an emergency, the connecting rod is connected to an external manual pusher to form a manual operation connection part.

[0013] Furthermore, the end faces adjacent to the upper pusher and the lower pusher are trapezoidal inclined surfaces that can be interlocked, and the magnetic component is located at the protrusion of the trapezoidal inclined surface.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, because the magnets on the adjacent end faces of the upper and lower pushers are arranged with the same pole, the size of the upper and lower pushers can be made very small, meeting the requirements of some small lock bodies and adapting to a wide range of scenarios. Secondly, the arrangement of the magnets on the adjacent end faces of the upper and lower pushers with the same pole and the setting of the return spring realizes non-mechanical contact magnetic push and elastic reset, making the clutch process smooth, shock-free and precise. Thirdly, this pusher has an independent housing, so that all components of the pusher are set inside the housing, and the limiting parts are all set on the housing. During assembly, the entire pusher can be directly installed in the lock body at the position where the clutch moving part can separate or engage with the external parts. This simplifies the structure, reduces the processing difficulty and improves the clutch accuracy. Fourthly, the upper pusher is movably sleeved on the rotating shaft, improving the coaxiality of the upper and lower pushers, thereby improving the movement stability of the clutch moving part.

[0015] Based on this, the end faces of the upper pusher and the lower pusher adjacent to each other are trapezoidal inclined meshing structures, so that the repulsive force of the same magnetic poles has a gradually increasing effect during the rotation of the lower pusher and a gradually decreasing effect during the reversal, which improves the smoothness and stability of the clutch moving parts. In addition, manual operation provides reliable emergency protection, which makes the present invention significantly improved in terms of structure, performance and reliability. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a pushing device for a lock clutch mechanism according to an embodiment of the present invention; Figure 2 for Figure 1 The front view; Figure 3 for Figure 2 Sectional view along line AA; Figure 4 for Figure 1 Schematic diagram of the structural breakdown of the embodiment; Figure 5 for Figure 3 A structural schematic diagram from another perspective of the embodiment; Figure 6 for Figure 1 Left view of the embodiment; Figure 7 This is a view of the adjacent end faces of the upper and lower pushers. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In this utility model, unless otherwise explicitly defined, the terms "setting," "installation," and "connection" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] See Figures 1 to 7This illustration shows one embodiment of the present invention, comprising: a housing, and a clutch movable component 3 disposed within the housing and extending from the housing. The housing includes a left cover 1 and a right cover 2, which are interlocked to form a cavity 4. This left-right cover structure facilitates processing and assembly. Within the cavity 4, or the housing itself, are a motor 41, a lower pusher 42, an upper pusher 43, a return spring 44, and a magnetic assembly 45. The motor 41 drives a rotating shaft 411, which is connected to the lower pusher 42, causing the lower pusher 42 to rotate. The upper pusher 43 and the clutch movable component 3 are sequentially inserted through the rotating shaft 411 from bottom to top. The upper pusher 43 is connected to the clutch movable component 3, causing the clutch movable component 3 to reciprocate along the axial direction of the rotating shaft 411. The clutch movable component 3 has a guide hole 31 that mates with the rotating shaft 411. The guide hole 31 further improves the coaxiality of the lower pusher 42, the upper pusher 43, and the clutch movable part 3, making the clutch movable part 3 run more smoothly. The return spring 44 is sleeved on the clutch movable part 3, with one end abutting against the bottom of the upper pusher 43 in the cavity 4, and the other end abutting against the end face of the upper pusher away from the lower pusher 42.

[0022] See Figure 4 and Figure 7 In some embodiments of this utility model, the magnetic component 45 includes an upper magnet 452 disposed in the upper pusher 43 and a lower magnet 451 disposed in the lower pusher 42. The upper magnet 452 and the lower magnet 451 have the same magnetic poles on the adjacent end faces of the upper pusher 43 and the lower pusher 42, for example, both are N poles or S poles. When the motor 41 drives the lower pusher 42 to rotate, the upper pusher 43 will not rotate circumferentially. When the upper magnet 452 approaches or aligns with the lower magnet 451, because the opposing surfaces of the magnets have the same pole, sufficient repulsive force is generated between the magnets. This force overcomes the elastic force of the upper return spring 44, driving the upper pusher 43 to move axially away from the lower pusher 42 along the rotating shaft 411, thereby pushing the clutch movable part 3 to move upward. When the motor 41 drives the lower pusher 42 to rotate again, it can be in the reverse direction. When the upper magnet 452 moves away from the lower magnet 451, under the action of the elastic force of the return spring 44, the upper pusher 43 moves axially along the rotating shaft 411 closer to the lower pusher 42, thereby driving the clutch movable part 3 to move downward, so as to realize the engagement or disengagement of the clutch movable part 3 with the external component. The above-mentioned rotation of the motor 41 and the cooperation of the magnetic component 45 constitute a non-contact magnetic drive device, which makes the drive device have a faster response speed and extremely low operating noise.

[0023] See Figure 4 and Figure 7Both the lower pushing member 42 and the upper pushing member 43 have lower magnets 451 and upper magnets 452 asymmetrically distributed around the rotation axis 411. Preferably, there are three lower magnets and three upper magnets. During relative rotation, the overlap area of ​​the magnetic poles of the three lower magnets 451 and the three upper magnets 452 continuously changes, resulting in a continuous change in the repulsive force. This mechanism differs from existing technologies that rely on instantaneous switching of attraction and repulsion forces. This invention achieves a smooth, stable, low-noise, and controllable pushing effect.

[0024] See Figure 4 and Figure 5 In some embodiments of this utility model, the lower pusher 42 is provided with a rotation limiting groove 422 at its end near the motor 41, and a corresponding rotation limiting block 201 is provided inside the right cover 2. The rotation limiting groove 422 and the rotation limiting block 201 cooperate with each other to limit the rotation angle of the lower pusher 42 within a certain range. This range is sufficient to ensure that the lower magnet and the upper magnet are completely aligned axially when the lower pusher is rotated forward, without the upper pusher rotating, or that the upper magnet and the lower magnet are in a radially opposite position on the rotating shaft 411 when the upper pusher is not rotated, i.e., they are 180° apart radially. This structure can realize the engagement and disengagement of the clutch by rotating the motor forward and backward. This mechanical limiting method avoids the cumulative error caused by traditional multi-turn rotation, improves the control accuracy and repeatability of the clutch position radially, and has a faster response speed, which is conducive to realizing high-frequency and fast clutch operation.

[0025] See Figure 5 In some embodiments of this utility model, the upper pushing member 43 is provided with a limiting block 431, and the left cover 1 and the right cover 2 are respectively provided with first notch grooves 432. Through the interlocking action of the limiting block 431 and the first notch groove 432, the circumferential deflection of the upper pushing member 43 during axial movement is effectively prevented, ensuring the alignment accuracy between it and the lower pushing member 42, thereby improving the stability and reliability of the clutch process.

[0026] See Figure 5 In some embodiments of this utility model, the upper push member 43 is provided with a connecting rod 433, and the left cover 1 and the right cover 2 are respectively provided with second notches 434. The connecting rod 433 moves within the stroke defined by the second notch 434. In emergency situations, the connecting rod 433 is connected to an external manual push component to form a manual operation connection part, thereby providing a reliable manual clutch solution in the event of power failure or system failure, enhancing the practicality and reliability of the product.

[0027] See Figure 3In some embodiments of this utility model, the lower end face 421 of the lower pusher 42 facing the upper pusher 43 and the upper end face 435 of the upper pusher 43 facing the lower pusher 42, i.e., the adjacent end faces of the upper and lower pushers, form a trapezoidal inclined engagement structure that can fit together. The magnetic components 45 are all located at the sloping protrusions. In this embodiment, the protrusions are designed as a platform. When the upper pusher 43 is fully lowered, the trapezoidal inclined structure allows the two end faces 421 and 435 to fit tightly together. This structure makes the process of the upper and lower magnets moving closer or further apart a gradual and continuous process, ensuring the continuity of the increase or decrease in repulsive force and guaranteeing the smoothness and stability of the clutch mechanism's operation.

[0028] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A driving device for a lock clutch mechanism, characterized in that, include: The housing, the clutch mechanism (3) disposed within and extending from the housing, and the following disposed within the housing: The motor (41) drives the rotating shaft (411) to rotate; The lower pusher (42) is connected to the rotating shaft (411) and can rotate with the rotating shaft (411); The upper pusher (43) is connected to the clutch movable part (3) and is movably sleeved on the rotating shaft (411); A return spring (44) is sleeved on the clutch movable part (3) and acts on the upper pusher (43); The magnetic component (45) includes an upper magnet (452) disposed in the upper pusher (43) and a lower magnet (451) disposed in the lower pusher (42), wherein the upper magnet (452) and the lower magnet (451) have the same magnetic poles on the adjacent end faces of the upper pusher (43) and the lower pusher (42); The motor (41) drives the lower pusher (42) to rotate. When the upper magnet (452) approaches or aligns with the lower magnet (451), under the action of magnetic force, the upper pusher (43) moves axially away from the lower pusher (42) along the rotating shaft (411). The motor (41) drives the lower pusher (42) to rotate again. When the upper magnet (452) moves away from the lower magnet (451), under the action of the elastic force of the return spring (44), the upper pusher (43) moves axially along the rotating shaft (411) to approach the lower pusher (42), so as to realize the engagement or disengagement of the clutch movable part (3) with the external component.

2. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The housing includes a left cover (1) and a right cover (2), which are fastened together to form a cavity (4).

3. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The lower magnet (451) is circumferentially asymmetrically distributed on the lower pusher (42), and the upper magnet (452) is circumferentially asymmetrically distributed on the upper pusher (43).

4. The driving device for a lock clutch mechanism according to claim 3, characterized in that, The number of lower magnets (451) is three, and the number of upper magnets (452) is three.

5. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The clutch movable part (3) is provided with a guide hole (31) that cooperates with the rotating shaft (411).

6. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The lower pusher (42) has a rotation limiting groove (422) at the end near the motor (41), and a rotation limiting block (201) is provided inside the housing. The rotation limiting groove (422) cooperates with the rotation limiting block (201).

7. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The upper pusher (43) is provided with a limiting block (431), and a first notch (432) is correspondingly provided on the housing. The limiting block (431) cooperates with the first notch (432) to prevent the upper pusher (43) from circumferentially deflecting.

8. The driving device for a lock clutch mechanism according to claim 1, characterized in that, The upper pusher (43) is provided with a connecting rod (433), and a second notch (434) is correspondingly provided on the housing. The connecting rod (433) moves within the stroke defined by the second notch (434). In an emergency, the connecting rod (433) is connected to an external manual pusher to form a manual operation connection part.

9. A driving device for a lock clutch mechanism according to any one of claims 1 to 8, characterized in that, The adjacent end faces of the upper pusher (43) and the lower pusher (42) are trapezoidal inclined surfaces that can be interlocked, and the magnetic component (45) is located at the protrusion of the trapezoidal inclined surface.

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