Driving mechanism, locking mechanism and vehicle

Abstract

The invention discloses a driving mechanism, a locking mechanism and a vehicle. The driving mechanism includes: a cam; the first end of the limiting piece abuts against the cam, and the cam can rotate to drive the limiting piece to be switched between the first position and the second position; when the limiting piece is located at the first position, the limiting piece is used for locking the vehicle opening and closing piece; when the limiting piece is located at the second position, the limiting piece is used for unlocking the vehicle opening and closing piece. According to the driving mechanism, the cam abuts against the first end of the limiting piece so as to drive the limiting piece to be switched between the first position and the second position, locking or unlocking of the vehicle opening and closing piece is achieved through cooperation of the cam and the limiting piece, direct collision and impact of the cam and the vehicle opening and closing piece are avoided, and noise of the driving mechanism is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a drive mechanism, a locking mechanism, and a vehicle. Background Technology

[0002] Existing vehicle locking mechanisms generally employ mechanical drives to achieve unlocking and locking functions. For example, they utilize structures such as cams, drive mechanisms, and struts to control the vehicle's opening and closing mechanism. The drive mechanism of the locking mechanism controls the opening and closing of the vehicle through the rigid contact and rapid movement of the cam and strut. Due to the rigid contact and rapid movement between mechanical components, significant mechanical noise is often generated during the locking and unlocking process, especially when the drive mechanism is rapidly starting or locking. This severely impacts the vehicle's NVH (noise, vibration, and harshness) performance, thereby affecting the user experience.

[0003] To reduce noise in drive mechanisms, locking mechanisms in related technologies typically incorporate sound-absorbing cotton, damping components, and other buffer structures at the locations of vehicle opening and closing parts. However, these methods have limited effectiveness in reducing noise and fail to meet users' high demands for vehicle quietness. Therefore, effectively reducing the noise of drive mechanisms is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] This application provides a drive mechanism, a locking mechanism, and a vehicle to effectively reduce the noise of the drive mechanism.

[0005] In a first aspect, embodiments of this application provide a driving mechanism, which includes: a cam; a limiting member, a first end of which abuts against the cam, the cam being rotatable to drive the limiting member to switch between a first position and a second position; when the limiting member is in the first position, the limiting member is used to lock the vehicle opening and closing mechanism; when the limiting member is in the second position, the limiting member is used to unlock the vehicle opening and closing mechanism.

[0006] According to the drive mechanism of this application embodiment, the cam abuts against the first end of the limiting member to drive the limiting member to switch between the first position and the second position. Through the cooperation between the cam and the limiting member, the locking or unlocking of the vehicle opening and closing parts is realized, avoiding direct collision and impact between the cam and the vehicle opening and closing parts, and effectively reducing the noise of the drive mechanism.

[0007] In one possible implementation, the drive mechanism further includes a drive assembly connected to the cam to drive the cam to rotate.

[0008] In one possible implementation, the drive assembly includes a power element and a transmission structure, wherein the transmission structure is connected between the power element and the cam, so that the power element drives the cam to rotate through the transmission structure.

[0009] In one possible implementation, the transmission structure includes: a first transmission member connected to a power member; and a second transmission member connected to the first transmission member and connected to a cam.

[0010] In one possible implementation, the transmission structure further includes: a first rotating shaft, and the second transmission component and the cam are all connected to the first rotating shaft.

[0011] In one possible implementation, the second transmission member has a first groove, the limiting member has a first protrusion, the first groove extends arc-shaped around the first rotating shaft on the second transmission member, and the first protrusion passes through the first groove and moves within the first groove.

[0012] In one possible implementation, when the limiting member is in the first position, the first protrusion is located at the first end of the first groove of the second transmission member; when the limiting member is in the second position, the first protrusion is located at the second end of the first groove of the second transmission member.

[0013] In one possible implementation, the transmission structure further includes a third transmission member, which is fixedly connected to the first rotating shaft and meshes with the first transmission member.

[0014] In one possible implementation, the drive mechanism further includes a first housing disposed outside the first transmission member and the third transmission member. The first housing has at least two spaced-apart second protrusions that form a moving channel for the limiting member.

[0015] In one possible implementation, at least one second protrusion has a limiting groove on its sidewall, and the limiting member can move along the limiting groove.

[0016] In one possible implementation, a first buffer layer is provided at the bottom of the limiting groove.

[0017] In one possible implementation, the first transmission component is connected to the output shaft of the power component via a coupling.

[0018] In one possible implementation, the profile surface of the cam is an involute surface.

[0019] In one possible implementation, the profile surface of the cam is provided with a second buffer layer.

[0020] Secondly, embodiments of this application provide a locking mechanism, which includes a support rod and the aforementioned driving mechanism; the second end of the limiting member of the driving mechanism can fix the support rod to lock the vehicle opening and closing component, or the second end of the limiting member of the driving mechanism can disengage from the support rod to unlock the vehicle opening and closing component.

[0021] In one possible implementation, the support rod is provided with an insertion hole; when the limiting member is in the first position, the second end of the limiting member can be inserted into the insertion hole of the support rod; when the limiting member is in the second position, the second end of the limiting member can be disengaged from the insertion hole of the support rod.

[0022] In one possible implementation, the locking mechanism further includes a second housing, a drive mechanism, and at least a portion of the strut housed within the second housing.

[0023] In one possible implementation, the locking mechanism further includes a sound sensing module for detecting noise information of the locking mechanism, so as to control the drive components of the drive mechanism based on the noise information.

[0024] In one possible implementation, the sound sensing module is disposed in at least one of the following locations: the second housing of the locking mechanism, the power component of the drive mechanism, the transmission structure of the drive mechanism, the cam, the limiting component, and the support rod.

[0025] In one possible implementation, the locking mechanism further includes a control module, which is connected to both the sound sensing module and the power component of the drive mechanism; wherein the power component is used to drive the cam to rotate.

[0026] In one possible implementation, when the noise information exceeds a preset threshold, the control module adjusts the duty cycle of the power component; wherein the noise information includes one or more combinations of sound decibel value, high frequency ratio, and timbre classification.

[0027] Thirdly, embodiments of this application provide a vehicle, which includes a vehicle opening and closing component and the aforementioned locking mechanism, wherein the locking mechanism is driven and connected to the vehicle opening and closing component.

[0028] In one possible implementation, the vehicle opening and closing element includes at least one of: a charging port cover, a fuel tank cover, a door, and a trunk door.

[0029] For a detailed description of the second and third aspects and their various implementations in this application, please refer to the detailed description in the first aspect and its various implementations. The beneficial effects of the second and third aspects and their various implementations can be found in the analysis of the beneficial effects of the first aspect and its various implementations; they will not be repeated here.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] Figure 1 This is an exploded structural diagram of the locking mechanism provided in an embodiment of this application;

[0032] Figure 2 A three-dimensional structural schematic diagram of the locking mechanism provided in the embodiments of this application;

[0033] Figure 3 A cross-sectional structural schematic diagram of the locking mechanism provided in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the locking mechanism provided in an embodiment of this application.

[0035] Figure label:

[0036] Cam 1; Limiting component 2; First protrusion 21; Transmission structure 3; First transmission component 31; Second transmission component 32; First groove 321; Third transmission component 33; First rotating shaft 4; Power component 5; First housing 6; Second protrusion 61; Coupling 7; Support rod 8; Socket 81; Sound sensing module 9; Control module 10; Locking mechanism 100. Detailed Implementation

[0037] The embodiments of this application 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 intended to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] The following is combined Figures 1 to 4 The present application describes in detail the drive mechanism, locking mechanism, and vehicle according to embodiments thereof.

[0040] In the embodiments of this application, reference is made to Figures 1 to 3 As shown, the drive mechanism includes: a cam 1; a limiting member 2, the first end of the limiting member 2 abutting against the cam 1, the cam 1 being rotatable to drive the limiting member 2 to switch between a first position and a second position; when the limiting member 2 is in the first position, the limiting member 2 is used to lock the vehicle opening and closing parts; when the limiting member 2 is in the second position, the limiting member 2 is used to unlock the vehicle opening and closing parts.

[0041] According to the drive mechanism of this application embodiment, the cam 1 abuts against the first end of the limiting member 2 to drive the limiting member 2 to switch between the first position and the second position. Through the cooperation between the cam 1 and the limiting member 2, the locking or unlocking of the vehicle opening and closing parts is realized, avoiding direct collision and impact between the cam 1 and the vehicle opening and closing parts, and effectively reducing the noise of the drive mechanism.

[0042] In some embodiments of this application, the drive mechanism further includes a drive assembly connected to the cam 1 to drive the cam 1 to rotate. The drive assembly drives the cam 1 to rotate, which in turn causes the limiting member 2 to switch between a first position and a second position, thereby enabling the vehicle opening and closing member to switch between a locked state and an unlocked state.

[0043] In some embodiments of this application, the drive assembly includes a power component 5 and a transmission structure 3. The transmission structure 3 is connected between the power component 5 and the cam 1, so that the power component 5 drives the cam 1 to rotate through the transmission structure 3. The combination of the power component 5 and the transmission structure 3 enables efficient driving of the cam 1 and reduces energy loss in the drive mechanism. Optionally, the power component 5 may include an electric motor.

[0044] In some embodiments of this application, the transmission structure 3 includes: a first transmission member 31, which is connected to the power member 5; and a second transmission member 32, which is connected to the first transmission member 31 and is also connected to the cam 1. The power member 5 can transmit power from the first transmission member 31 to the second transmission member 32, thereby driving the cam 1 to rotate. Optionally, the first transmission member 31 is a first gear, and the second transmission member 32 is a second gear.

[0045] In some embodiments of this application, the transmission structure 3 further includes a first rotating shaft 4, with the second transmission component 32 and the cam 1 both connected to the first rotating shaft 4. When the first rotating shaft 4 rotates, it can drive the second transmission component 32 and the cam 1 to rotate synchronously. Optionally, the first rotating shaft 4 and the second transmission component 32 adopt a snap-fit ​​shaft-hole fit design, and the two achieve transmission reliability through an interference fit or keyway structure; and / or, the first rotating shaft 4 and the cam 1 adopt a snap-fit ​​shaft-hole fit design, and the two achieve transmission reliability through an interference fit or keyway structure.

[0046] During the process of switching the vehicle opening and closing mechanism from the unlocked state to the locked state, the cam 1 and the second transmission component 32 are driven by the power component 5 and can rotate clockwise or counterclockwise around the first rotating shaft 4. The cam 1 and the second transmission component 32 can drive the limiting component 2 to move to the first position so as to lock the vehicle opening and closing mechanism through the limiting component 2.

[0047] During the process of switching the vehicle opening and closing mechanism from the locked state to the unlocked state, the cam 1 and the second transmission component 32 are driven in the opposite direction by the power component 5, and can rotate counterclockwise or clockwise around the first rotating shaft 4. The cam 1 and the second transmission component 32 can drive the limiting component 2 to move to the second position, so that the limiting component 2 is disengaged from the vehicle opening and closing mechanism and the vehicle opening and closing mechanism is unlocked.

[0048] In some embodiments of this application, the second transmission member 32 has a first groove 321, and the limiting member 2 has a first protrusion 21. The first groove 321 extends arcuately around the first rotating shaft 4 on the second transmission member 32, and the first protrusion 21 passes through the first groove 321 and moves within the first groove 321. The first groove 321 of the second transmission member 32 drives the limiting member 2 to retract through friction, engaging with the locking mechanism of the vehicle opening and closing component. Optionally, the first groove 321 may penetrate the second transmission member 32, or it may be an inwardly recessed structure from the surface of the second transmission member 32.

[0049] The radii of the first groove 321 and the first rotating shaft 4 are different, while the groove width of the first groove 321 remains constant. For example, the two opposite sides of the first groove 321 along the radial direction of the second transmission member 32 are the inner sidewall and the outer sidewall, with the inner sidewall being closer to the first rotating shaft 4 than the outer sidewall. For example, the distance from the inner sidewall of the first groove 321 to the first rotating shaft 4 increases counterclockwise, and the distance from the outer sidewall of the first groove 321 to the first rotating shaft 4 also increases counterclockwise. (Refer to...) Figure 2 As shown, the leftmost side of the first groove 321 is further away from the first rotating shaft 4 than the rightmost side of the first groove 321. When the limiting member 2 is in the first position, the first protrusion 21 of the limiting member 2 is located at the leftmost side of the first groove 321 to lock the vehicle opening and closing component. When the limiting member 2 is in the second position, the first protrusion 21 of the limiting member 2 is located at the rightmost side of the first groove 321 to disengage the limiting member 2 from the vehicle opening and closing component, thereby unlocking the vehicle opening and closing component. Thus, the drive mechanism replaces the rigid collision of the prior art with flexible drive, systematically suppressing the noise of the drive mechanism from a mechanical design perspective.

[0050] In some embodiments of this application, when the limiting member 2 is in the first position, the first protrusion 21 is located at the first end of the first groove 321 of the second transmission member 32; when the limiting member 2 is in the second position, the first protrusion 21 is located at the second end of the first groove 321 of the second transmission member 32. Optionally, refer to... Figure 2 As shown, the first end of the first groove 321 is the leftmost end of the first groove 321, and the second end of the first groove 321 is the rightmost end of the first groove 321.

[0051] During the process of switching the vehicle opening and closing mechanism from the unlocked state to the locked state, the cam 1 and the second transmission component 32 are driven by the power component 5 to rotate in a clockwise direction. The cam 1 pushes the limiting component 2 to move from the second position to the first position. The first protrusion 21 of the limiting component 2 moves from the rightmost side of the first groove 321 to the leftmost side of the first groove 321 so as to lock the vehicle opening and closing mechanism through the limiting component 2.

[0052] During the process of switching the vehicle opening / closing mechanism from a locked state to an unlocked state, the cam 1 and the second transmission component 32 are driven by the power component 5 to rotate counterclockwise. The cam 1 exerts no pushing force on the limiting component 2. The first groove 321 of the second transmission component 32 drives the first protrusion 21 of the limiting component 2 to move from the leftmost side of the first groove 321 to the rightmost side of the first groove 321, so that the limiting component 2 disengages from the vehicle opening / closing mechanism, thereby unlocking the vehicle opening / closing mechanism. Thus, by increasing the centrifugal radius of the first groove 321, the effect of the second transmission component 32 pushing away from the vehicle opening / closing mechanism can be achieved.

[0053] In some embodiments of this application, the transmission structure 3 further includes a third transmission member 33, which is fixedly connected to the first rotating shaft 4 and meshes with the first transmission member 31. The power member 5 can be transmitted from the first transmission member 31 to the third transmission member 33, which drives the first rotating shaft 4 to rotate, so that the second transmission member 32 and the cam 1 rotate with the first rotating shaft 4, thereby driving the limiting member 2 to switch between the first position and the second position.

[0054] In some embodiments of this application, the drive mechanism further includes a first housing 6, which is disposed outside the first transmission member 31 and the third transmission member 33. The first housing 6 has at least two spaced-apart second protrusions 61, which together form a moving channel for the limiting member 2. The first housing 6 is disposed outside the first transmission member 31 and the third transmission member 33 to protect them. The moving channel formed by the at least two second protrusions 61 of the first housing 6 can serve as a limiting part of the limiting member 2, allowing the limiting member 2 to move along the moving channel to lock or unlock the vehicle opening and closing mechanism, thus restricting the movement trajectory of the limiting member 2 and preventing it from deviating during movement. Optionally, the first transmission member 31 is a first gear, the second transmission member 32 is a second gear, and the third transmission member 33 is a third gear.

[0055] In some embodiments of this application, at least one second protrusion 61 has a limiting groove on its sidewall, and the limiting member 2 can move along the limiting groove. Having a limiting groove on the sidewall of at least one second protrusion 61, allowing the limiting member 2 to move along the limiting groove, prevents the limiting member 2 from shifting during movement and further improves the positioning accuracy of the limiting member 2. Optionally, the limiting groove is a T-shaped limiting groove, and the limiting member 2 is embedded in the limiting groove via a slide rail.

[0056] In some embodiments of this application, a first buffer layer is provided at the bottom of the limiting groove. The first buffer layer can absorb the impact force when the limiting member 2 moves, reduce the mechanical collision noise between the limiting member 2 and the second protrusion 61, and effectively reduce the vibration and noise of the limiting member 2 when switching between the first position and the second position. Optionally, the first buffer layer is made of rubber, silicone, or other buffer materials. For example, the first buffer layer is a silicone rubber buffer layer; optionally, the Shore hardness of the silicone rubber buffer layer can be 30A-40A.

[0057] In some embodiments of this application, the first transmission member 31 is connected to the output shaft of the power member 5 via a coupling 7. The output shaft of the power member 5 drives the first transmission member 31 to rotate via the coupling 7 to transmit power. Optionally, the coupling 7 is an elastic coupling, which can compensate for the axial deviation between the power member 5 and the first transmission member 31, improve transmission stability, and reduce vibration transmission during the transmission process.

[0058] In some embodiments of this application, the profile surface of the cam 1 is an involute surface. Using an involute surface as the profile surface of the cam 1, the profile surface of the cam 1 abuts against the limiting member 2, making the force on the limiting member 2 more uniform during movement, reducing local stress concentration, reducing the impact during the movement of the limiting member 2, and improving the smoothness of the movement of the limiting member 2. Optionally, the involute surface adopts a composite surface design of involute and circular arc, which can effectively reduce the impact during the movement of the limiting member 2.

[0059] In some embodiments of this application, the profile surface of the cam is provided with a second buffer layer. Optionally, the second buffer layer is made of polyurethane or other buffering materials, which can absorb the impact force when the cam 1 contacts the limiting member 2 and reduce mechanical noise. For example, the second buffer layer is a polyurethane elastic layer; optionally, the thickness of the polyurethane elastic layer is 0.5mm-1.2mm, so as to further buffer the impact force when the cam 1 contacts the limiting member 2 and improve the quietness performance of the drive mechanism.

[0060] According to a second aspect embodiment of the locking mechanism 100, the locking mechanism 100 includes a support rod 8 and the aforementioned driving mechanism; the second end of the limiting member 2 of the driving mechanism can fix the support rod 8 to lock the vehicle opening and closing component, or the second end of the limiting member 2 of the driving mechanism can disengage from the support rod 8 to unlock the vehicle opening and closing component. The support rod 8 can reciprocate along the axial direction of the support rod 8 under the action of an external force. When the support rod 8 moves to the lower position, the locking mechanism 100 can switch between a first position and a second position by driving the limiting member 2 to lock or unlock the vehicle opening and closing component.

[0061] According to the locking mechanism 100 of this application embodiment, the cam 1 abuts against the first end of the limiting member 2 to drive the limiting member 2 to switch between the first position and the second position. Through the cooperation between the cam 1 and the limiting member 2, the second end of the limiting member 2 can be fixed or disengaged from the support rod 8 to lock or unlock the vehicle opening and closing parts, avoiding direct collision and impact between the cam 1 and the vehicle opening and closing parts, and effectively reducing the noise of the locking mechanism 100.

[0062] In some embodiments of this application, the support rod 8 is provided with an insertion hole 81; when the limiting member 2 is in the first position, the second end of the limiting member 2 can be inserted into the insertion hole 81 of the support rod 8; when the limiting member 2 is in the second position, the second end of the limiting member 2 can be disengaged from the insertion hole 81 of the support rod 8. Through the cooperation between the insertion hole 81 of the support rod 8 and the limiting member 2, precise locking and unlocking of the support rod 8 can be achieved.

[0063] During the process of switching the vehicle opening and closing mechanism from the unlocked state to the locked state, the cam 1 and the second transmission component 32 are driven by the power component 5 and can rotate clockwise or counterclockwise around the first rotating shaft 4. The cam 1 and the second transmission component 32 can drive the limiting component 2 to move towards the support rod 8, so that the second end of the limiting component 2 is inserted into the insertion hole 81 of the support rod 8 to form a mechanical lock, so as to lock the vehicle opening and closing mechanism through the limiting component 2.

[0064] During the process of switching the vehicle opening and closing mechanism from the locked state to the unlocked state, the cam 1 and the second transmission component 32 are driven in the opposite direction by the power component 5, and can rotate counterclockwise or clockwise around the first rotating shaft 4. The cam 1 and the second transmission component 32 can drive the limiting component 2 to move away from the support rod 8, so that the second end of the limiting component 2 is disengaged from the insertion hole 81 of the support rod 8, and the locking state between the second end of the limiting component 2 and the support rod 8 is released, so that the limiting component 2 is disengaged from the vehicle opening and closing mechanism and the vehicle opening and closing mechanism is unlocked.

[0065] In some embodiments of this application, the locking mechanism 100 further includes a second housing, in which the drive mechanism and at least a portion of the support rod 8 are housed. The second housing protects the internal components from external environmental influences, improves structural durability, and enhances the reliability of the locking mechanism 100. Optionally, the second housing 9 is made of metal or high-strength plastic material.

[0066] In some embodiments of this application, the locking mechanism 100 further includes a sound sensing module 9, which is used to detect noise information of the locking mechanism 100 and control the drive components of the drive mechanism based on the noise information. Based on the noise information of the locking mechanism 100 detected by the sound sensing module 9, the drive components of the drive mechanism in the locking mechanism 100 are controlled. By combining the sound sensing module 9 with the control algorithm, real-time monitoring and active adjustment of the locking or unlocking noise of the locking mechanism 100 can be achieved, effectively reducing the mechanical noise of the locking mechanism 100.

[0067] In some embodiments of this application, the sound sensing module 9 includes: a sound information acquisition module for acquiring noise information of the locking mechanism 100; a signal conversion module connected to the sound information acquisition module for converting the noise information into a noise signal; and a signal transmission module connected to the signal conversion module for transmitting the noise signal to a control terminal to control the drive components of the drive mechanism based on the noise information. Specifically, when the locking mechanism 100 emits a mechanical collision sound during locking or unlocking, the sound information acquisition module of the sound sensing module 9 acquires the noise information of the locking mechanism 100, processes and analyzes the noise information through the signal conversion module, converts it into a noise signal, and the signal transmission module transmits the noise signal to the control terminal to control the drive components of the drive mechanism based on the noise information, thereby achieving intelligent adjustment of the noise of the locking mechanism 100.

[0068] In some embodiments of this application, the sound sensing module 9 is disposed in at least one of the following locations: the second housing of the locking mechanism 100, the power component 5 of the driving mechanism, the transmission structure 3 of the driving mechanism, the cam 1, the limiting component 2, and the support rod 8. The sound sensing module 9 can be disposed near the noise source of the locking mechanism 100, such as the second housing of the locking mechanism 100, the power component 5 of the driving mechanism, the transmission structure 3 of the driving mechanism, the cam 1 (e.g., near the contour surface of the cam 1), the limiting component 2, or the support rod 8 (e.g., near the insertion hole 81 of the support rod 8), to achieve noise monitoring of the locking mechanism 100.

[0069] In some embodiments of this application, reference is made to Figure 4As shown, the locking mechanism 100 also includes a control module 10, which is connected to the sound sensing module 9 and the power component 5 of the drive mechanism. The power component 5 is used to drive the cam 1 to rotate. When the user locks or unlocks the locking mechanism 100, the power component 5 is driven according to the control signal of the control module 10. The control module 10 can control the power component 5 according to the noise information collected by the sound sensing module 9, and dynamically adjust the drive parameters of the power component 5 to achieve precise noise control, realize the slow locking / unlocking function of the locking mechanism 100, and make the locking or unlocking action of the locking mechanism 100 smoother, thereby significantly reducing the generation of mechanical noise.

[0070] In some embodiments of this application, when the noise information exceeds a preset threshold, the control module 10 adjusts the duty cycle of the power component 5; wherein, the noise information includes one or more combinations of sound decibel value, high frequency proportion, and timbre classification. The noise information collected by the sound sensing module 9 includes sound decibel value, high frequency proportion, and timbre classification. By calculating and decomposing the change characteristics of at least one dimension of the noise information, when the noise information exceeds the preset threshold, the control module 10 dynamically adjusts the duty cycle (such as voltage duty cycle, current duty cycle) of the power component 5 to realize the soft start / soft lockout function of the actuator, so as to achieve more precise noise control. The dynamic adjustment algorithm of the duty cycle includes: the adjustment range of the duty cycle of the power component 5 is 0-100%, the step size is 0.5%, and the PID algorithm is used to dynamically reduce the duty cycle of the power component 5 by 0.5%.

[0071] Optionally, the noise information is a sound decibel value. If the sound decibel value is above a preset threshold, the vehicle's NVH noise requirements are not met, and the duty cycle of the power component 5 is reduced to control the power component 5 until the preset threshold is met. If the sound decibel value is within the preset threshold, the vehicle's NVH noise requirements are met, and the power component 5 is controlled using its current duty cycle. By dynamically adjusting the duty cycle of the power component 5, more precise noise control can be achieved. The preset threshold can range from 45dB to 55dB; for example, the preset threshold is 50dB.

[0072] Optionally, the noise information includes sound decibel value, high-frequency proportion, and timbre classification. Taking a preset threshold of 50dB for sound decibel value and a preset threshold of 35% for high-frequency proportion as an example, the sound decibel value is judged by threshold: if the sound decibel value is ≥50dB, the noise suppression strategy is triggered; the high-frequency proportion is analyzed by converting the time domain signal into a frequency domain signal to identify the main noise frequency band (such as high-frequency collision sound in the 200-800Hz range); if the high-frequency proportion is >35%, it is judged as a "crisp" sound (mechanical collision sound); the timbre classification is determined by quantifying the "crisp" or "dull" characteristics of the sound (such as the MFCC1 value of crisp sound >0.8), and the zero-crossing rate of high-frequency collision sound is significantly higher than that of dull sound (such as ZCR >0.5 / sample).

[0073] The control method of the control module 10 includes: when the sound decibel value is ≥50dB or the high frequency ratio is ≥35%, it is determined to be abnormal noise and the duty cycle adjustment of the power component 5 is triggered; when the sound decibel value is <50dB and the high frequency ratio is <35%, it is determined to be normal noise and the current duty cycle of the power component 5 is maintained.

[0074] In some embodiments of this application, the control module 10 includes: a signal receiving module, which receives noise information sent by the sound sensing module 9; a signal processing module, connected to the signal receiving module, for determining a noise control signal based on the noise information and a preset threshold; and an information output module, connected to the signal processing module, for sending the noise control signal to the power component 5 to dynamically adjust the duty cycle of the power component 5 based on the noise control signal. Optionally, the signal receiving module may be an interface line, a signal conditioning circuit, an analog-to-digital converter, and / or a protocol parsing unit; the signal processing module may be a microprocessor, an algorithm library, or a storage unit; and the information output module may be a communication interface, a protocol conversion, a drive circuit, and / or a feedback circuit interface.

[0075] According to a third aspect embodiment of this application, the vehicle includes a vehicle opening and closing component and the aforementioned locking mechanism, the locking mechanism being driven and connected to the vehicle opening and closing component. The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, a range-extended hybrid electric vehicle, or other new energy vehicle, etc., and this specification does not specifically limit it to any particular type.

[0076] According to the embodiments of this application, by adopting the above-described locking mechanism, the vehicle's NVH performance can be improved, the vehicle's technological feel can be enhanced, the user experience can be significantly improved, and user complaints can be reduced.

[0077] In some embodiments of this application, the vehicle opening and closing components include at least one of a charging port cover, a fuel tank cover, a door, and a trunk door. The aforementioned locking mechanism can be used to lock and unlock vehicle opening and closing components such as the charging port cover, fuel tank cover, door, and trunk door that require quiet operation, effectively improving the vehicle's NVH performance, significantly enhancing the user experience, and reducing user complaints.

[0078] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0080] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A driving mechanism, characterized in that, include: Cam (1); The limiting member (2) has its first end abutting against the cam (1), and the cam (1) can rotate to drive the limiting member (2) to switch between a first position and a second position; When the limiting member (2) is in the first position, the limiting member (2) is used to lock the vehicle opening and closing member; When the limiting member (2) is in the second position, the limiting member (2) is used to unlock the vehicle opening and closing member.

2. The driving mechanism according to claim 1, characterized in that, The drive mechanism further includes a drive component connected to the cam (1) to drive the cam (1) to rotate.

3. The driving mechanism according to claim 2, characterized in that, The drive assembly includes a power component (5) and a transmission structure (3), wherein the transmission structure (3) is connected between the power component (5) and the cam (1) so that the power component (5) drives the cam (1) to rotate through the transmission structure (3).

4. The driving mechanism according to claim 3, characterized in that, The transmission structure (3) includes: The first transmission component (31) is connected to the power component (5); The second transmission component (32) is connected to the first transmission component (31) and is connected to the cam (1).

5. The driving mechanism according to claim 4, characterized in that, The transmission structure (3) further includes: a first rotating shaft (4), the second transmission component (32) and the cam (1) are all connected to the first rotating shaft (4).

6. The driving mechanism according to claim 5, characterized in that, The second transmission member (32) has a first groove (321), and the limiting member (2) has a first protrusion (21). The first groove (321) extends in an arc around the first rotating shaft (4) on the second transmission member (32). The first protrusion (21) passes through the first groove (321) and moves within the first groove (321).

7. The driving mechanism according to claim 6, characterized in that, When the limiting member (2) is in the first position, the first protrusion (21) is located at the first end of the first groove (321) of the second transmission member (32); When the limiting member (2) is in the second position, the first protrusion (21) is located at the second end of the first groove (321) of the second transmission member (32).

8. The driving mechanism according to claim 5, characterized in that, The transmission structure (3) further includes a third transmission component (33), which is fixedly connected to the first rotating shaft (4) and meshes with the first transmission component (31).

9. The driving mechanism according to claim 8, characterized in that, The drive mechanism further includes a first housing (6), which is disposed outside the first transmission member (31) and the third transmission member (33). The first housing (6) has at least two spaced second protrusions (61), which together form a moving channel for the limiting member (2).

10. The driving mechanism according to claim 9, characterized in that, At least one of the second protrusions (61) has a limiting groove on its sidewall, and the limiting member (2) can move along the limiting groove.

11. The driving mechanism according to claim 10, characterized in that, The bottom of the limiting groove is provided with a first buffer layer.

12. The driving mechanism according to claim 4, characterized in that, The first transmission component (31) is connected to the output shaft of the power component (5) via a coupling (7).

13. The drive mechanism according to any one of claims 1-12, characterized in that, The profile surface of the cam (1) is an involute surface.

14. The drive mechanism according to any one of claims 1-12, characterized in that, The profile surface of the cam (1) is provided with a second buffer layer.

15. A locking mechanism (100), characterized in that, include: The strut (8) and the drive mechanism as described in any one of claims 1-14; The second end of the limiting member (2) of the drive mechanism can fix the support rod (8) to lock the vehicle opening and closing member, or the second end of the limiting member (2) of the drive mechanism can disengage from the support rod (8) to unlock the vehicle opening and closing member.

16. The locking mechanism (100) according to claim 15, characterized in that, The support rod (8) is provided with a socket (81); When the limiting member (2) is in the first position, the second end of the limiting member (2) can be inserted into the insertion hole (81) of the support rod (8); When the limiting member (2) is in the second position, the second end of the limiting member (2) can disengage from the insertion hole (81) of the support rod (8).

17. The locking mechanism (100) according to claim 15, characterized in that, The locking mechanism further includes a second housing, in which the drive mechanism and at least a portion of the strut (8) are housed.

18. The locking mechanism (100) according to any one of claims 15-17, characterized in that, The locking mechanism further includes a sound sensing module (9), which is used to detect noise information of the locking mechanism (100) and control the driving components of the driving mechanism based on the noise information.

19. The locking mechanism (100) according to claim 18, characterized in that, The sound sensing module (9) is disposed in at least one of the following locations: the second housing of the locking mechanism (100), the power component (5) of the driving mechanism, the transmission structure (3) of the driving mechanism, the cam (1), the limiting component (2), and the support rod (8).

20. The locking mechanism (100) according to claim 18, characterized in that, The locking mechanism (100) further includes a control module (10), which is connected to the sound sensing module (9) and the power component (5) of the driving mechanism respectively; wherein the power component (5) is used to drive the cam (1) to rotate.

21. The locking mechanism (100) according to claim 20, characterized in that, When the noise information exceeds a preset threshold, the control module (10) is used to adjust the duty cycle of the power component (5); wherein, the noise information includes one or more combinations of sound decibel value, high frequency ratio and timbre classification.

22. A vehicle, characterized in that, It includes a vehicle opening and closing component and a locking mechanism (100) as described in any one of claims 15-21, the locking mechanism (100) being driven to connect the vehicle opening and closing component.

23. The vehicle according to claim 22, characterized in that, The vehicle opening and closing components include at least one of the following: charging port cover, fuel tank cover, door, and trunk door.

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