A stabilizer bar device and a vehicle

Abstract

The application relates to the field of vehicle structures, and provides a stabilizer bar device and a vehicle. The stabilizer bar device can solve the problem of fatigue damage and insufficient durability caused by the damping deceleration mechanism. The stabilizer bar device comprises an input shaft, an output shaft and a damping part, wherein the input shaft is provided with at least two radially protruding input protruding teeth at intervals along the circumferential direction of the input shaft; the output shaft is provided with at least two axially extending output containing grooves at intervals along the circumferential direction of the output shaft; the damping part comprises at least two damping protruding teeth, the damping protruding teeth are provided with damping grooves, the input protruding teeth are inserted into the damping protruding teeth through the damping grooves; the outer surface of the damping protruding teeth is outwardly protruding to form a protruding part, the input protruding teeth extend into the output containing grooves through the damping protruding teeth, and the protruding part is in interference fit with the output containing grooves.

Description

Technical Field

[0001] This application relates to the field of vehicle structures, and more particularly to a stabilizer bar device and a vehicle. Background Technology

[0002] The active stabilizer bar reducer is installed in the vehicle chassis system. By dynamically adjusting the roll stiffness, it effectively suppresses the impact on the passenger compartment under bumpy road conditions, significantly improving ride comfort and handling stability.

[0003] This device integrates a motor and a multi-stage reduction mechanism. The motor's output torque, after being reduced and amplified, is transmitted to the suspension system via a rocker arm. The vibration damping and reduction mechanism, as a core component, absorbs impact vibrations between the reducer and the output flange through elastic elements, achieving vibration reduction and noise reduction. This technology is currently widely used in the chassis systems of mid-to-high-end passenger vehicles and new energy vehicles.

[0004] However, the damping and deceleration mechanisms in related technologies are prone to fatigue damage and lack durability. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a stabilizer bar device and a vehicle that can reduce fatigue damage and improve durability.

[0006] In a first aspect, this application provides a stabilizer bar device, including an input shaft, an output shaft, and a damping member. The input shaft has at least two radially protruding input teeth spaced apart along its circumference; the output shaft has at least two axially extending output receiving grooves spaced apart along its circumference; the damping member includes at least two damping teeth, each damping tooth having a damping groove, and the input teeth are inserted into the damping teeth through the damping grooves; the outer surface of the damping teeth protrudes outward to form a protrusion, and the input teeth extend into the output receiving grooves through the damping teeth, with the protrusions and the output receiving grooves being interference-fitted.

[0007] The stabilizer bar device provided in this application has an input protrusion tooth inserted into a damping groove, which then inserts into an output receiving groove, thus realizing the transmission connection between the input and output shafts. The damping element is located between the output and input shafts, absorbing vibration and reducing noise. A protrusion extends beyond the outer surface of the damping protrusion tooth and is interference-fitted with the output receiving groove. This ensures that when the damping element engages with the output shaft, the protrusion is in a pre-compressed state, constantly exerting thrust on the sidewall of the output receiving groove. Therefore, when a car travels over a bumpy road, a single wheel bounces upwards due to a small impact from an obstacle, causing the output shaft to rotate relative to the input shaft. The output receiving groove rotates to one side, with one sidewall pressing against the corresponding protrusion, while the other sidewall moves away from the protrusion. The compression of one sidewall causes the protrusion to deform, and because the protrusion itself is in a pre-compressed state, the protrusion corresponding to the sidewall moving away from the protrusion will rebound, compensating for the distance traveled. Therefore, when the output shaft rotates slightly, the protrusion prevents the entire damping component from rotating with the output shaft, thus ensuring the stability of the input shaft. Since the protrusion bears the main function of vibration reduction and noise reduction, the damping teeth experience less stress, extending the service life of the damping component, making it less prone to fatigue damage, and improving its durability.

[0008] In some implementations, the outer surface of the damping protrusion is recessed inward to form a recessed portion, and there is a preset gap between the recessed portion and the side wall of the output receiving groove.

[0009] In some implementations, the protrusion includes a circumferential protrusion located on two opposing sidewalls of the damping tooth along the input axis.

[0010] In some implementations, the protrusion includes a radial protrusion located on the sidewall of the damping tooth along the radial direction of the input axis.

[0011] In some implementations, the recess includes a circumferential recess located on the circumferential and opposite sidewalls of the damping protrusion along the input shaft.

[0012] In some implementations, the recess includes a radial recess located on the sidewall of the damping protrusion along the radial direction of the input axis.

[0013] In some implementations, both the protrusion and the recess extend axially along the input shaft.

[0014] In some implementations, the recesses and protrusions are alternately arranged on the same sidewall of the damping protrusions.

[0015] In some implementations, the protrusions and recesses are distributed in an axisymmetric manner with the central axis of the damping protrusion as the axis.

[0016] In some implementations, the input protrusion teeth are provided in five or six sizes, and the input protrusion teeth are evenly distributed along their own circumference.

[0017] In some implementations, an adhesive layer is provided between the input protrusion and the inner wall of the damping groove.

[0018] Secondly, embodiments of this application provide a vehicle including the stabilizer bar device of the first aspect.

[0019] In the vehicle of this application embodiment, since the stabilizer bar device of the first aspect is included, the same beneficial effects can be achieved. That is, the damping teeth are subjected to less force, which extends the service life of the damping component, makes it less prone to fatigue damage, and improves its durability. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a five-petal stabilizer bar device according to an embodiment of this application; Figure 2 This is a schematic diagram of a six-petal stabilizer bar device according to an embodiment of this application; Figure 3 This is a cross-sectional view of a five-petal type damping member as an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of a six-lobed damping element in an embodiment of this application; Figure 5 This is a schematic diagram of a five-petal stabilizer bar device according to an embodiment of this application; Figure 6 This is a schematic diagram of a five-petal stabilizer bar device according to an embodiment of this application; Figure 7 This is a schematic diagram of a six-petal stabilizer bar device according to an embodiment of this application; Figure 8 This is a schematic diagram of the damping teeth in the stabilizer bar device according to an embodiment of this application; Figure 9 This is a schematic diagram showing the torsional performance of damping components with different numbers of lobes.

[0023] Explanation of reference numerals in the attached figures: 1. Input shaft; 2. Input tooth; 3. Connecting part; 4. Output shaft; 5. Output receiving groove; 6. Vibration damping component; 61. Vibration damping tooth; 62. Vibration damping groove; 63. Protrusion; 631. Circumferential protrusion; 632. Radial protrusion; 64. Fixing ring; 65. Connecting part; 651. First plate; 652. Second plate; 66. Recess; 661. Circumferential recess; 662. Radial recess; a. Preset gap. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0030] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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 or an electrical connection; 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 the embodiments of this application according to the specific circumstances.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0033] The following is a detailed description of this application.

[0034] This application provides a vehicle, which is a machine powered by fuel or electricity used to transport people or goods. The vehicle can be a sedan, SUV, sport utility vehicle (SUV), multi-purpose vehicle (MPV), truck, bus, public transport, etc. The vehicle can refer to a fuel-powered vehicle, an electric vehicle, or a hybrid vehicle.

[0035] The active stabilizer bar reducer is the core torque actuation component of the active stabilizer bar system. It is typically integrated into the actuator in the middle of the front or rear stabilizer bar, connecting the bidirectional output motor to the left and right half-shaft stabilizer bars. Essentially, it is a high-reduction-ratio, low-backlash precision gear reducer. Its function is to convert the high-speed, low-torque output from the motor into low-speed, high-torque, precisely driving the stabilizer bars to generate opposing torsional forces. This generates an active anti-roll torque in real time, opposite to the vehicle's body roll tendency. Therefore, when encountering uneven road surfaces that cause a small impact on one side of the wheel, resulting in a bounce, it significantly suppresses body roll, balancing handling stability and ride comfort.

[0036] When the active stabilizer bar motor provides power input to the reducer, the reducer reduces the motor's input speed and increases the output torque. During this process, there are noise, vibration, and harshness (NVH) issues between the reducer and the output flange, including impact, friction, and vibration.

[0037] During vehicle operation, if a small obstacle appears on the road, it can cause one wheel to bounce upwards due to a slight impact. At this time, an impact will occur between the three-stage reduction gear assembly inside the active stabilizer bar and the output flange of the rocker arm, causing the vibration to be transmitted to the passenger compartment through the subframe, thus affecting the ride comfort of the chassis.

[0038] To address the aforementioned issues, a damping structure is typically added between the third-stage planetary gear set and the output flange ring of the reducer to resolve NVH (noise, vibration, and harshness) problems. A commonly used damping structure consists of a metal frame of the three-stage reducer fixed to rubber bushings, utilizing the elastic deformation of the rubber bushings to absorb torque fluctuations in the transmission system.

[0039] In related technologies, rubber bushings are typically four-petaled symmetrical petals with a smooth, groove-free outer surface and an inner bore that fits into the reducer frame. After the entire rubber bushing is pressed into the groove of the reducer output flange, the four petal end faces are press-fitted with the corresponding bosses of the rocker arm flange ring, forming a flexible connection that both isolates high-frequency motor vibration and transmits large torque.

[0040] However, the smooth cylindrical surface of the rubber bushing fits perfectly with the groove of the reducer's output flange. When the wheel bounces, the torque of the stabilizer bar is entirely converted into overall shear and torsional deformation of the rubber bushing during rocker arm rotation. The rubber bushing is under overall stress, with stress concentration at the root of the four segments, failing to distribute the load. Under long-term high-frequency alternating loads, the rubber rapidly fatigues and cracks. Slippage and peeling occur at the interface between the metal skeleton and the rubber, causing overall creep and wear debris on the outer diameter of the rubber bushing. The rubber bushing is under overall stress, and its durability is insufficient, requiring premature replacement, which significantly increases after-sales costs.

[0041] Moreover, due to the smaller number of blades in the four-lobed structure, the compression of a single piece of rubber is high under the same torque. The load on the third-stage planetary gearbox and rubber bushing of the reducer is large, and the internal shear stress and temperature rise are concentrated. At high temperatures, the rubber modulus decreases, creep intensifies, and early cracking is easy, which deteriorates its reliability and durability.

[0042] This application provides a stabilizer bar device and vehicle that can solve the problems of easy fatigue damage and poor durability of rubber bushings.

[0043] The stabilizer bar assembly includes a reducer, a damping element 6, and a rocker arm. The damping element 6 acts as an elastic intermediary between the reducer and the rocker arm, achieving the dual functions of torque transmission and vibration isolation. The end of the rocker arm is hinged to the suspension control arm or steering knuckle via a ball joint or bushing.

[0044] Among them, the connection part 653 between the reducer and the damping component 6 is selected from the third-stage planetary gear set. The reason for selecting the third-stage planetary gear set is that the torque of this stage has been reduced to the rated range by the first-stage and second-stage planetary gear sets, the speed is the lowest, and the structural rigidity is the highest. The outer circle of the gear ring can be used directly as the positioning stop, without the need for additional bearings or flange transitions. This shortens the torque path, reduces assembly steps, and provides the maximum usable diameter for the damping component 6, minimizing the tangential displacement under the same angular deformation, thereby reducing the shear stress of the damping component 6 and improving its durability.

[0045] Example 1 Reference Figure 1 and Figure 2 This application provides a stabilizer bar device, including an input shaft 1, an output shaft 4, and a damping member 6. The input shaft 1 has at least two radially protruding input teeth 2 spaced apart along its circumference. The output shaft 4 has at least two axially extending output receiving grooves 5 spaced apart along its circumference. The damping member 6 includes at least two damping teeth 61, each having a damping groove 62. The input teeth 2 are inserted into the damping teeth 61 through the damping grooves 62. The outer surface of the damping teeth 61 protrudes outward to form a protrusion 63, and the input teeth 2 extend into the output receiving grooves 5 through the damping teeth 61. The protrusion 63 and the output receiving grooves 5 are interference-fitted.

[0046] The input shaft 1 is located on the third-stage planetary gear set of the reducer, and input teeth 2 are spaced circumferentially on the peripheral wall of the input shaft 1. The width of the input teeth 2 extends radially along the input shaft 1, and the length extends axially.

[0047] A connecting part 653 is coaxially fixed to the peripheral wall of the input shaft 1. The connecting part 653 is located on the side of the input tooth 2 away from the output shaft 4 and is used to connect the reducer. The connecting part 653 has a ring structure, and its peripheral wall extends beyond the outermost edge of the input tooth 2 in the radial direction.

[0048] Output shaft 4 is connected to the rocker arm, and output shaft 4 is coaxial with input shaft 1.

[0049] The output receiving groove 5 is located on one end face of the output shaft 4 facing the input shaft 1, and is formed by a local area of ​​the end face of the output shaft 4 recessed inward along the axial direction. At least two input protrusions 2 are provided, and correspondingly, at least two output receiving grooves 5 are also provided, each corresponding to one of the input protrusions 2.

[0050] The damping component 6 is made entirely of rubber, utilizing its elastic and deformable characteristics to achieve the damping effect.

[0051] The damping element 6 is generally cylindrical in shape, including a retaining ring 64 and at least two damping protrusions 61. The retaining ring 64 is coaxially arranged with the input shaft 1, and the damping protrusions 61 are arranged in a one-to-one correspondence with the input protrusions 2. The extending direction of the damping protrusions 61 is parallel to the axial direction of the retaining ring 64, and they are fixedly connected to the retaining ring 64.

[0052] Multiple damping protrusions 61 are arranged circumferentially along the fixing ring 64 and are not connected in the radial direction near the central axis, so as to allow the input shaft 1 to be inserted. When the input shaft 1 passes through the fixing ring 64 and is inserted into the middle of the damping protrusions 61, the damping protrusions 61 surround the outer periphery of the input shaft 1.

[0053] Reference Figure 3 The damping tooth 61 has a damping groove 62. Specifically, the damping groove 62 is located inside the damping tooth 61 and is formed by the end face of the damping tooth 61 facing the reducer recessed inward along its own axial direction. The damping groove 62 is inserted into the input tooth 2, and after the two are engaged, the input tooth 2 and the inner wall of the damping groove 62 are completely fitted together. Thus, the input tooth 2 is inserted into the damping tooth 61 through the damping groove 62.

[0054] Reference Figure 4 Adjacent damping protrusions 61 are connected by a connecting part 653, which includes a first plate 651 and a second plate 652. The first plate 651 and the second plate 652 are perpendicular to each other, connecting multiple damping protrusions 61 into a ring structure with a tail connection.

[0055] The first plate 651 has a fan-shaped structure and extends perpendicular to the axial direction of the fixed ring 64. The outer ring of the first plate 651 is mounted on the inner ring of the fixed ring 64; both sides are connected to two adjacent damping teeth 61, and the connection is located at the end of the damping teeth 61 facing the reducer; the inner ring of the first plate 651 extends to contact the peripheral wall of the input shaft 1.

[0056] The second plate 652 has an arc-shaped structure, with its axis parallel to the axis of the fixing ring 64. Both ends of the second plate 652 along the axis are connected to the two ends of the damping teeth 61, and both sides along the circumferential direction are connected to the sides of two adjacent damping teeth 61. The second plate 652 is located at the radial inner end of the damping teeth 61 and is inserted between the two input teeth 2, contacting the circumferential wall of the central column.

[0057] The outer surface of the damping tooth 61 protrudes outward to form a protrusion 63. The outer surface refers to any surface of the damping tooth 61 in the radial or circumferential direction. The direction of its protrusion can be radial or circumferential, or there can be a certain angle between it and the radial or circumferential direction, as long as the protrusion 63 extends beyond the outer surface of the damping tooth 61.

[0058] After the damping protrusion 61 engages with the input protrusion 2, it is inserted into the output receiving groove 5, completing the connection between the reducer, the damping component 6, and the rocker arm. The outer contour dimension of the damping protrusion 61 corresponding to the protrusion 63 should be slightly larger than the inner contour distance corresponding to the output receiving groove 5, so that after the damping component 6 engages with the rocker arm, the protrusion 63 and the output receiving groove 5 are in an interference fit, i.e., the protrusion 63 is in a pre-compressed state.

[0059] The stabilizer bar device provided in this application has an input protrusion 2 inserted into a damping protrusion 61 via a damping groove 62, and then inserted into an output receiving groove 5 along with the damping protrusion 61, thus realizing the transmission connection between the input shaft 1 and the output shaft 4. The damping element 6 is located between the output shaft 4 and the input shaft 1, and plays a role in absorbing vibration and reducing noise. The protrusion 63 protrudes from the outer surface of the damping protrusion 61 and is interference-fitted with the output receiving groove 5, so that when the damping element 6 is engaged with the output shaft 4, the protrusion 63 is in a pre-compressed state, and always exerts a thrust on the side wall of the output receiving groove 5. Therefore, when a car travels over a bumpy road, a single wheel bounces upward due to a small impact from an obstacle, causing the output shaft 4 to rotate relative to the input shaft 1. This causes the output receiving groove 5 to rotate to one side, with one sidewall pressing against the corresponding protrusion 63, while the other sidewall moves away from the protrusion 63. Pressing against one sidewall of the protrusion 63 causes it to compress and deform. Since the protrusion 63 is already in a pre-compressed state, the protrusion 63 corresponding to the sidewall of the output receiving groove 5 that is away from the protrusion 63 will rebound, compensating for the distance it has moved away from due to rotation. Therefore, when the output shaft 4 rotates slightly, the protrusion 63 prevents the entire damping element 6 from rotating with the output shaft 4, thus ensuring the stability of the input shaft 1. Because the protrusion 63 bears the main function of vibration damping and noise reduction, the damping teeth 61 experience less force, extending the service life of the damping element 6, making it less prone to fatigue damage, and improving its durability.

[0060] Example 2 Reference Figure 3 and Figure 5 The outer surface of the damping protrusion 61 is recessed inward to form a recessed portion 66, and there is a preset gap a between the recessed portion 66 and the side wall of the output receiving groove 5.

[0061] The outer surface of the damping tooth 61 refers to any one of the outer surfaces of the damping tooth 61 along the circumferential or radial direction, that is, the surface corresponding to any one of the inner walls of the output receiving groove 5 after it is inserted into the output receiving groove 5.

[0062] The inward concavity can be either along the circumferential or radial direction, or it can be inclined at a certain angle to the circumferential or radial direction.

[0063] After the recessed portion 66 is recessed inward, along the axial direction, the recessed portion 66 is lower than the outer surface of the damping protrusion 61, thereby moving away from the inner wall of the output receiving groove 5. The recessed distance of the recessed portion 66 is limited so that after the protrusion 63 and the output receiving groove 5 are interference-fitted, the recessed portion 66 and the side wall of the output receiving groove 5 are spaced apart, that is, there is a preset gap a.

[0064] Under normal driving conditions, the protrusion 63 of the damping tooth 61 is interference-fitted with the output receiving groove 5, and a preset gap 'a' exists between the recess 66 and the side wall of the output receiving groove 5. When a single wheel is impacted and bounces slightly upward, the rocker arm drives the output shaft 4 to rotate. At this time, the first side wall of the output receiving groove 5 moves away from the damping tooth 61, and the second side wall moves closer to the damping tooth 61. The first side wall moves away from the corresponding protrusion 63 on the damping tooth 61. Since the protrusion 63 is in a pre-compressed state, when the first side wall moves away, the protrusion 63 rebounds and continues to abut against the first side wall, compensating for the distance the first side wall moves away, ensuring that the input shaft 1 and the damping element 6 do not rotate with the output shaft 4. The second sidewall is close to the damping protrusion 61 and continues to compress the corresponding protrusion 63 on the damping protrusion 61. At this time, the protrusion 63 is compressed and the degree of deformation increases. Due to the setting of the recess 66, the deformation of the protrusion 63 can be directed to the position of the recess 66, that is, the rubber at the protrusion 63 flows to the recess 66 to reduce the degree of damage to the protrusion 63, thereby improving the service life of the damping component 6.

[0065] In some embodiments, the protrusions and recesses 66 can be distributed in any shape at any position on the outer surface of the damping teeth 61. For example, the protrusions and recesses 66 can be circular structures, evenly or randomly distributed on the outer surface of the damping teeth 61; or they can be elongated structures, evenly or randomly arranged on the outer surface of the damping teeth 61.

[0066] When designing the dispersed locations, in order to allow the protrusions 63 to flow smoothly into the recesses 66, the distance between the protrusions 63 and the recesses 66 can be shortened, so that each protrusion 63 has at least one recess 66 nearby. Alternatively, the protrusions 63 and recesses 66 can be designed to be arranged alternately, so that one recess 66 can correspond to at least two protrusions 63, and one protrusion 63 can also correspond to at least two recesses 66, which is more conducive to the flow and deformation of the protrusions 63 into the recesses 66.

[0067] Example 3 Reference Figure 6 and Figure 7 The protrusion 63 includes a circumferential protrusion 631, which is located on two or one of the opposite sidewalls of the damping tooth 61 along the input shaft 1.

[0068] The two sidewalls of the damping protrusion 61 are opposite each other along the axial direction, and its outer surface is the side facing the two adjacent damping protrusions 61. The circumferential protrusion 631 is located on the sidewall.

[0069] The circumferential protrusion 631 can be protruding along the circumferential direction or along any direction between the circumferential and radial directions. Its cross-section can be semi-circular, trapezoidal or triangular, etc. After it is engaged with the output receiving groove 5, the top of the circumferential protrusion 631 (i.e. the highest position protruding from the surface of the damping tooth 61) abuts against the side wall of the output receiving groove 5 and is squeezed and deformed.

[0070] Furthermore, the circumferential protrusions 631 on the same damping protrusion 61 are provided on both side walls of the damping protrusion 61 along the circumferential direction, and the circumferential protrusions 631 on both sides are interference fit with the side walls of the output receiving groove 5.

[0071] By setting the circumferential protrusion 631, it can cooperate with the two circumferential side walls of the output receiving groove 5 when the output shaft 4 rotates circumferentially, so as to achieve the vibration damping effect during circumferential rotation.

[0072] Example 4 The protrusion 63 includes a radial protrusion 632, which is located on the side wall of the damping tooth 61 along the radial direction of the input shaft 1.

[0073] The damping protrusion 61 has only one sidewall along the radial direction of the input shaft 1. The side closest to the input shaft 1 is open and has no sidewall. Therefore, the radial protrusion 632 is only provided on the outer sidewall of the damping protrusion 61 along the radial direction.

[0074] In this embodiment, the radial protrusion 632 protrudes in a radial direction along the fixing ring 64, and its top end abuts against the inner wall of the output receiving groove 5.

[0075] In some other embodiments, the protrusion direction of the radial protrusion 632 may also be at a certain angle to the radial direction of the retaining ring 64.

[0076] By setting radial protrusions 632, when the output shaft 4 experiences axial offset, the radial protrusions 632 on one or more damping teeth 61 on the corresponding side are squeezed and deformed, while one or more radial protrusions 632 on the other side spring back and abut against the side wall of the output receiving groove 5 on the opposite side, thereby achieving the damping effect when the axial offset occurs.

[0077] Example 5 The recess 66 includes a circumferential recess 661, which is located on the sidewall of the damping tooth 61 along the input shaft 1 and opposite to each other.

[0078] The circumferential recess 661 can be provided on one of the side walls of the damping tooth 61 along the circumferential direction, or it can be provided on two opposite side walls of the damping tooth 61. Its position can be determined according to the position of the circumferential protrusion 631.

[0079] The circumferential recess 661 is recessed in the circumferential direction. In some other embodiments, the recess direction of the circumferential recess 661 may also have a certain angle with the circumferential direction.

[0080] In terms of arrangement, the circumferential recesses 661 and circumferential protrusions 631 in the embodiments of this application correspond to each other, that is, at least one circumferential recess 661 is provided near each circumferential protrusion 631.

[0081] Therefore, when the output shaft 4 rotates, the side wall of the output receiving groove 5 squeezes the circumferential protrusion 631 and deforms it. The rubber at the circumferential protrusion 631 will be squeezed and flow to the nearby circumferential recess 661 to relieve the degree of compression suffered by the circumferential protrusion 631 and reduce the gap between the circumferential recess 661 and the corresponding side wall of the output receiving groove 5.

[0082] Example 6 The recess 66 includes a radial recess 662, which is located on the side wall of the damping tooth 61 along the radial direction of the input shaft 1.

[0083] Among them, the damping protrusion 61 has only one sidewall along the radial direction of the input shaft 1, and there is no sidewall at the end near the input shaft 1. Therefore, the radial recess 662 is only provided on its radially outward sidewall.

[0084] The side wall, which mates with the output receiving slot 5, is an arc-shaped surface.

[0085] The recessed direction of the radial recess 662 is along the radial direction of the input shaft 1. In some other embodiments, the recessed direction of the radial recess 662 may also have a certain angle with the radial direction of the input shaft 1.

[0086] In terms of arrangement, the radial recess 662 is located near the radial protrusion 632 in order to accommodate the rubber flow caused by the deformation of the radial protrusion 632.

[0087] Therefore, when the output shaft 4 is offset, causing the radial protrusions 632 on one or more damping teeth 61 on the corresponding side to be squeezed and deformed, the rubber at the radial protrusions 632 on these damping teeth 61 will flow to the nearby radial recesses 662, effectively avoiding fatigue damage.

[0088] Example 7 Reference Figure 7 Both the protrusion 63 and the recess 66 extend along the axial direction of the input shaft 1.

[0089] In this embodiment, both the protrusion 63 and the recess 66 are elongated structures, and their extension directions are parallel to the axial direction of the input shaft 1.

[0090] In some embodiments, the protrusion 63 and the recess 66 can be continuous elongated structures, with their ends extending along the axial direction to both ends of the damping tooth 61 along the axial direction; or they can be distributed only in a local area of ​​the damping tooth 61. When the protrusion 63 and the recess 66 are only distributed in a local area of ​​the damping tooth 61, their axial ends can be aligned in the axial direction or staggered.

[0091] In other embodiments, the protrusions 63 and recesses 66 may also be multiple strip structures that are broken in the middle. For example, at least two protrusions 63 or at least two recesses 66 are provided on the same axis, and adjacent protrusions 63 or recesses 66 are not connected. Along the circumferential direction, the ends of the protrusions 63 and recesses 66 are aligned or staggered.

[0092] Example 8 On the same sidewall of the damping tooth 61, recesses 66 and protrusions 63 are alternately arranged.

[0093] On the two opposite sidewalls of the damping tooth 61 along the input shaft 1, circumferential recesses 661 and circumferential protrusions 631 are alternately arranged; on the sidewalls of the damping tooth 61 facing outward in the radial direction, radial recesses 662 and radial protrusions 632 are alternately arranged.

[0094] In this case, the number of recesses 66 and protrusions 63 on each sidewall of the damping protrusion 61 can be set to be the same, or the number of protrusions 63 or recesses 66 can be greater.

[0095] In some other embodiments, two recesses 66 or two protrusions 63 may be arranged adjacent to each sidewall of the damping protrusion 61, as long as there are corresponding protrusions 63 or recesses 66 nearby.

[0096] Example 9 With the central axis of the damping tooth 61 as the axis, the protrusion 63 and the recess 66 are distributed in an axisymmetric manner.

[0097] On each damping tooth 61, the recessed portion 66 and the protruding portion 63 are symmetrically distributed. In the cross-section of the damping tooth 61, the central axis arranged radially along the input shaft 1 is the axis of symmetry. The radial protruding portion 632 and the radial recessed portion 662 are symmetrically distributed on the radial side surface of the damping tooth 61. The damping tooth 61 has protruding portions 63 and recessed portions 66 on both circumferential side walls, and the distribution of the circumferential protruding portion 631 and the circumferential recessed portion 661 on the two side walls is consistent.

[0098] The symmetrical arrangement makes the fit between each damping protrusion 61 and the corresponding output receiving groove 5 more stable and reliable.

[0099] Example 10 The input teeth 2 are provided with 5 or 6 teeth, and the input teeth 2 are evenly distributed along their own circumference.

[0100] The number of input teeth 2 is set to five or six, i.e., five-lobed or six-lobed. Correspondingly, the number of damping teeth 61 and output receiving grooves 5 are also set to five or six, and they are all evenly distributed circumferentially around the axis of the input shaft 1.

[0101] The number of input teeth 2 and damping teeth 61 directly determines the pressure per unit area of ​​the damping teeth 61. When the input teeth 2 have five or six lobes, the fan-shaped angle and thickness of each damping tooth 61 on the corresponding damping element 6 are smaller. The same torque is distributed by more damping teeth 61, the unit pressure decreases, and the pre-compression of the protrusion 63 can be set lower. In this way, even if the damping element 6 hardens in a low-temperature environment, the protrusion 63 can still be kept in close contact with the side wall of the output receiving groove 5 under low pre-compression conditions, and will not lose its elasticity due to a sharp increase in stiffness, thus continuing to effectively absorb small angular vibrations.

[0102] Therefore, under the same load, the load distributed to each damping tooth 61 on the five-lobed and six-lobed damping elements 6 is lower, and the deformation of a single damping tooth 61 is reduced, resulting in better durability.

[0103] Table 1 shows the damage degree of the damping teeth 61 at different radial positions under the same load. The damage to the damping element 6 varies with the number of lobes, and the damage degree of the damping element 6 decreases as the number of lobes increases.

[0104]

[0105] Table 1 Table 2 shows the torsional performance of damper 6 under different lobe numbers. (Refer to...) Figure 9 It can be seen that the five-petal or six-petal damping element 6 has better torsional resistance, and the six-petal damping element 6 has better torsional resistance than the five-petal damping element 6.

[0106]

[0107] Table 2 In addition, when the input shaft 1 transmits rotational drive, the five- or six-lobed structure can more easily transmit it to the output shaft 4, thereby improving the response speed of the active stabilizer bar and ensuring the chassis handling stability.

[0108] Example 11 An adhesive layer is provided between the input protrusion 2 and the inner wall of the damping groove 62.

[0109] The input protrusion 2 and the damping groove 62 are fixedly connected. In this embodiment, the damping element 6 is vulcanized on the input protrusion 2 to form an adhesive layer between the input protrusion 2 and the damping groove 62.

[0110] Vulcanization is a processing technique for rubber. Through high-temperature and high-pressure vulcanization, it chemically bonds the rubber to the three-stage planetary gear set frame of the reducer. The specific operation is as follows: the input tooth 2 is mated with the damping tooth 61; it is placed in a vulcanization mold and heated and pressurized; during vulcanization, the damping component 6 forms a firm bond with the surfaces of the input shaft 1 and the input tooth 2; after cooling, a rubber-metal composite component is formed.

[0111] The vulcanization connection method improves the reliability of the fit between the reducer and the damping component 6.

[0112] It should be noted that the stabilizer bar device involved in the above embodiments may include at least one of Embodiments 1 to 11. For example, Embodiment 1 can be implemented as an independent embodiment, Embodiment 1+2 can be implemented as an independent embodiment, Embodiment 1+2+3 can be implemented as an independent embodiment, Embodiment 1+2+4 can be implemented as an independent embodiment, Embodiment 1+2+3+4 can be implemented as an independent embodiment, Embodiment 1+2+3+5 can be implemented as an independent embodiment, Embodiment 1+2+4+5 can be implemented as an independent embodiment, Embodiment 1+3+4+5 can be implemented as an independent embodiment, Embodiment 1+2+3+4+5 can be implemented as an independent embodiment, Embodiment 1+2+3+4+6 can be implemented as an independent embodiment, Embodiment 1+2+3+5+6 can be implemented as an independent embodiment, Embodiment 1+3+4+5+6 can be implemented as an independent embodiment, Embodiment 1+2+3+4+5+6 can be implemented as an independent embodiment, and Embodiment 1+6+7 can be implemented as an independent embodiment. Examples of embodiments 1+2+6+7, 1+2+3+6+7, 1+2+3+4+6+7, 1+2+3+4+5+6+7, 1+2+3+4+5+6+7, 1+2+3+4+5+6+7+8, 1+2+3+4+5+6+7+8+9, 1+2+3+4+5+6+7+8+9, 1+2+3+4+5+6+7+8+9+10, 1+2+3+4+5+6+7+8+9+10+11, etc., are not limited to these examples and will not be listed here.

[0113] Example 12 This application also provides a vehicle that includes the stabilizer bar device described in the above embodiments.

[0114] In the vehicle of this application, the same beneficial effects can be achieved by including the stabilizer bar device of the above embodiment. That is, the damping member 6 is less prone to fatigue damage, and its durability is improved.

[0115] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stabilizer bar device, characterized in that, include: The input shaft has at least two radially protruding input teeth spaced apart along its circumference. The output shaft has at least two axially extending output receiving slots spaced apart along its circumference; A damping element includes at least two damping protrusions, each having a damping groove. An input protrusion is inserted into the damping protrusion through the damping groove. The outer surface of the damping protrusion has a protrusion that protrudes outward. The input protrusion extends into the output receiving groove through the damping protrusion, and the protrusion is interference-fitted with the output receiving groove.

2. The stabilizer bar device according to claim 1, characterized in that, The outer surface of the damping protrusion is recessed inward to form a recessed portion, and there is a preset gap between the recessed portion and the side wall of the output receiving groove.

3. The stabilizer bar device according to claim 1, characterized in that, The protrusion includes a circumferential protrusion located on two opposing sidewalls of the damping tooth along the input shaft.

4. The stabilizer bar device according to claim 1, characterized in that, The protrusion includes a radial protrusion located on the sidewall of the damping tooth along the radial direction of the input shaft.

5. The stabilizer bar device according to claim 2, characterized in that, The recess includes a circumferential recess located on the sidewall of the damping protrusion along the input shaft and opposite to it.

6. The stabilizer bar device according to claim 2, characterized in that, The recess includes a radial recess located on the sidewall of the damping protrusion along the radial direction of the input shaft.

7. The stabilizer bar device according to claim 2, characterized in that, Both the protrusion and the recess extend along the axial direction of the input shaft.

8. The stabilizer bar device according to claim 2, characterized in that, On the same sidewall of the damping protrusion, the recessed portion and the protrusion are alternately arranged.

9. The stabilizer bar device according to claim 8, characterized in that, With the central axis of the damping protrusion as the axis, the protrusion and the recess are distributed in an axisymmetric manner.

10. The stabilizer bar device according to claim 1, characterized in that, The input protrusion teeth are provided in five or six parts, and the input protrusion teeth are evenly distributed along their own circumference.

11. The stabilizer bar device according to claim 1, characterized in that, An adhesive layer is provided between the input protrusion and the inner wall of the damping groove.

12. A vehicle, characterized in that, include: The stabilizer bar device according to any one of claims 1-11.

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