Actuator, stabilizer bar assembly, chassis and vehicle

Abstract

The actuator comprises a driving piece, a transmission assembly and an elastic piece, the transmission assembly comprises a first transmission mechanism and a second transmission mechanism which are sequentially arranged in the axial direction of the actuator and are in mutual transmission, the first transmission mechanism is connected with the driving piece, and the second transmission mechanism is suitable for outputting actuating force. The elastic piece is arranged on the second transmission mechanism and used for enabling the second transmission mechanism to directly or indirectly abut against at least part of the first transmission mechanism. According to the actuator provided by the embodiment of the utility model, the second transmission mechanism and the first transmission mechanism can be mutually limited by arranging the elastic piece capable of enabling at least part of the second transmission mechanism and the first transmission mechanism to directly or indirectly abut against each other, so that the second transmission mechanism and the first transmission mechanism are prevented from generating relative displacement to a certain extent; the structural stability of the transmission assembly is improved, the working performance of the transmission assembly is guaranteed, the structural stability of the transmission assembly is improved through the elastic piece, and the structure of the actuator can be simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a kind of actuator, stabilizer bar assembly, chassis and vehicle. BACKGROUND

[0002] In prior art, in order to balance vehicle body, avoid vehicle body to incline, roll over when vehicle turns, stabilizer bar assembly is usually arranged on vehicle.

[0003] However, the structure of the existing stabilizer bar assembly is relatively complex, which leads to complicated assembly of the stabilizer bar assembly, and the problem of missing parts is prone to occur during assembly, which increases the assembly difficulty of the stabilizer bar assembly, and also increases the manufacturing cost of the stabilizer bar assembly. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in prior art. To this end, the first purpose of the utility model is to provide an actuator, which is simple in structure to simplify the structure of the stabilizer bar assembly and solve the technical problem of complex structure of the stabilizer bar assembly in prior art.

[0005] The second purpose of the utility model is to provide a stabilizer bar assembly with the actuator.

[0006] The third purpose of the utility model is to provide a chassis with the actuator or the stabilizer bar assembly.

[0007] The fourth purpose of the utility model is to provide a vehicle with the chassis.

[0008] According to the actuator of the utility model embodiment, the elastic member is arranged to make the second transmission mechanism and at least part of the first transmission mechanism directly or indirectly abut, so that the second transmission mechanism and the first transmission mechanism can be limited relative to each other, the relative displacement of the second transmission mechanism and the first transmission mechanism is avoided to a certain extent, the structural stability of the transmission assembly is improved, the working performance of the transmission assembly is ensured, the structure of the actuator is simplified by using the elastic member to improve the structural stability of the transmission assembly, the assembly difficulty and manufacturing cost of the actuator are reduced, and the assembly difficulty and manufacturing cost of the stabilizer bar assembly are reduced.

[0009] According to the actuator of the utility model embodiment, the elastic member is arranged to make the second transmission mechanism and at least part of the first transmission mechanism directly or indirectly abut, so that the second transmission mechanism and the first transmission mechanism can be limited relative to each other, the relative displacement of the second transmission mechanism and the first transmission mechanism is avoided to a certain extent, the structural stability of the transmission assembly is improved, the working performance of the transmission assembly is ensured, the structure of the actuator is simplified by using the elastic member to improve the structural stability of the transmission assembly, the assembly difficulty and manufacturing cost of the actuator are reduced, and the assembly difficulty and manufacturing cost of the stabilizer bar assembly are reduced.

[0010] In some embodiments, the first transmission mechanism comprises a first sun gear, a first planet gear, a first outer ring gear and a first planet carrier, the first sun gear, the first planet gear and the first outer ring gear are sequentially and mutually meshed, the first sun gear is connected with the driving member, and the first planet gear and the first planet carrier are rotationally connected; the second transmission mechanism comprises a second sun gear, a second planet gear, a second outer ring gear and a second planet carrier, the second sun gear, the second planet gear and the second outer ring gear are sequentially and mutually meshed, the second sun gear is in transmission connection with the first planet carrier, the second planet gear and the second planet carrier are rotationally connected, and the second planet carrier is used for outputting the actuating force; and the first sun gear directly or indirectly abuts against the second sun gear.

[0011] In some embodiments, the driving member comprises a driving shaft, and a rack is arranged on the outer periphery of the driving shaft to form the first sun gear.

[0012] In some embodiments, the second sun gear is internally provided with a mounting groove, the elastic member is arranged in the mounting groove, and the elastic member applies a force to the second sun gear, which is directed to the first sun gear, so that the second sun gear directly or indirectly abuts against the first sun gear.

[0013] In some embodiments, the mounting groove comprises a first mounting groove and a second mounting groove arranged in sequence along the axial direction thereof, the inner diameter of the first mounting groove is greater than the inner diameter of the second mounting groove, so as to form a stepped surface at the connection between the first mounting groove and the second mounting groove, and the elastic member is arranged in the first mounting groove and abuts against the stepped surface.

[0014] In some embodiments, the mounting groove penetrates through the second sun gear along the axial direction of the second sun gear, and the mounting groove is adapted to be filled with a lubricating medium.

[0015] In some embodiments, the first sun gear is internally provided with a containing groove, and the containing groove is adapted to be filled with a lubricating medium.

[0016] In some embodiments, the axial extension direction of the containing groove is less than the length of the driving shaft.

[0017] In some embodiments, the transmission assembly further comprises a third transmission mechanism, which is arranged between the first transmission mechanism and the second transmission mechanism in the axial direction of the actuator, the third transmission mechanism is in transmission cooperation with the first transmission mechanism and the second transmission mechanism respectively, and the elastic member is used for directly abutting at least part of the third transmission mechanism against at least part of the first transmission mechanism and at least part of the second transmission mechanism respectively.

[0018] In some embodiments, the third transmission mechanism comprises a third sun gear, a third planet gear, a third ring gear and a third planet carrier, the third sun gear, the third planet gear and the third ring gear are in mesh with each other in turn, the third sun gear is fixedly connected with the first planet carrier, the third planet gear and the third planet carrier are rotatably connected, and the third planet carrier is fixedly connected with the second sun gear; the third sun gear is in abutting fit with the first sun gear and the second sun gear respectively.

[0019] In some embodiments, a communication groove is arranged on the third sun gear and penetrates the third sun gear in the axial direction, and the communication groove is filled with a lubricating medium.

[0020] In some embodiments, the driving member comprises a first housing, and the transmission assembly comprises a second housing, the first housing and the second housing are arranged in turn in the axial direction of the actuator.

[0021] In some embodiments, the first transmission mechanism and the second transmission mechanism are arranged in the second housing, the driving member further comprises a driving shaft, the driving shaft is arranged in the first housing and at least part of the driving shaft extends into the second housing and is connected with the first transmission mechanism.

[0022] In some embodiments, the first housing and the second housing are sleeved and fixedly fitted at two opposite ends.

[0023] According to the stabilizer bar assembly provided in the embodiment of the present application, the aforementioned actuator is used, so that the assembly difficulty and manufacturing cost of the stabilizer bar assembly can be reduced.

[0024] According to the stabilizer bar assembly provided in the embodiment of the present application, the aforementioned actuator is used, so that the assembly difficulty and manufacturing cost of the stabilizer bar assembly can be reduced.

[0025] According to the chassis provided in the embodiment of the present application, the aforementioned actuator or the aforementioned stabilizer bar assembly is used, so that the assembly difficulty and manufacturing cost of the chassis can be reduced to a certain extent.

[0026] According to the chassis provided in the embodiment of the present application, the aforementioned actuator or the aforementioned stabilizer bar assembly is used, so that the assembly difficulty and manufacturing cost of the chassis can be reduced to a certain extent.

[0027] According to the vehicle provided in the embodiment of the present application, the aforementioned chassis is used.

[0028] According to the vehicle of the embodiment of the utility model, the chassis is used, so that the actuator or the stabilizer bar assembly is used, the vehicle can avoid tilting and falling during driving to a certain extent, and the use safety of the vehicle is improved.

[0029] The additional aspects and advantages of the utility model will become apparent from the following description, or be appreciated through practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0031] Figure 1 It is the structure schematic drawing of stabilizer bar assembly of some embodiments of the utility model.

[0032] Figure 2 It is Figure 1 It is the sectional view along A-A line in figure 2.

[0033] Figure 3 It is Figure 2 It is the enlarged view of region I in figure 2.

[0034] Figure 4 It is the sectional view of partial structure of stabilizer bar assembly of another some embodiments of the utility model.

[0035] Reference Signs:

[0036] 2000, stabilizer bar assembly;

[0037] 1000, actuator;

[0038] 100, driving piece;

[0039] 110, driving shaft;

[0040] 120, first housing;121, first boss;

[0041] 200, transmission assembly;

[0042] 210, first transmission mechanism;

[0043] 211, first sun gear;2111, accommodating groove;

[0044] 212, first planet wheel;

[0045] 213, first planet carrier;

[0046] 220, second transmission mechanism;

[0047] 221, second sun gear;

[0048] 2211, mounting groove;

[0049] 22111, first mounting groove;

[0050] 22112, second mounting groove;

[0051] 22113, step surface;

[0052] 222, second planetary gear;

[0053] 223, second carrier;

[0054] 230, third transmission mechanism;

[0055] 231, third sun gear;

[0056] 2311, communication groove; 23111, first communication groove; 23112, second communication groove;

[0057] 232, third planetary gear;

[0058] 233, third carrier;

[0059] 240, second housing;

[0060] 300, elastic member;

[0061] 1100, first stabilizing rod;

[0062] 1200, second stabilizing rod. DETAILED DESCRIPTION

[0063] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0064] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0065] The actuator 1000 of this utility model is described below with reference to the accompanying drawings.

[0066] Combination Figures 1-4 As shown, the actuator 1000 according to an embodiment of the present invention includes: a driving member 100, a transmission assembly 200, and an elastic member 300.

[0067] Among them, such as Figure 4 As shown, the transmission assembly 200 includes a first transmission mechanism 210 and a second transmission mechanism 220. The first transmission mechanism 210 and the second transmission mechanism 220 are arranged sequentially along the axial direction of the actuator 1000 and drive each other. The first transmission mechanism 210 is connected to the drive member 100, and the second transmission mechanism 220 is adapted to output actuation force.

[0068] It should be noted that the axial direction of the actuator 1000 mentioned above can be understood as... Figure 4 The left and right directions shown can also be understood as the direction from the driver's seat to the passenger seat, that is, the width direction of the vehicle. By arranging the first transmission mechanism 210 and the second transmission mechanism 220 sequentially along the axial direction of the actuator 1000, the first transmission mechanism 210 and the second transmission mechanism 220 can be arranged sequentially along the width direction of the vehicle, so as to connect the actuator 1000 between the left and right suspensions of the vehicle, and to a certain extent ensure the working performance of the actuator 1000.

[0069] It should also be noted that the mutual transmission between the first transmission mechanism 210 and the second transmission mechanism 220 can also be understood as the first transmission mechanism 210 driving the second transmission mechanism 220 to move, or the second transmission mechanism 220 driving the first transmission mechanism 210 to move, so as to use the transmission assembly 200 to transmit the force output by the drive member 100, thereby realizing different transmission ratios and power transmission, and ensuring the performance of the actuator 1000 to a certain extent.

[0070] In some embodiments, the drive member 100 is formed as a motor. Since the first transmission mechanism 210 is connected to the drive member 100, the drive member 100 can serve as a power source to provide working power to the entire actuator 1000.

[0071] In a specific example, the drive unit 100 is energized to drive the first transmission mechanism 210 to move. The movement of the first transmission mechanism 210 drives the second transmission mechanism 220 to move synchronously. Since the second transmission mechanism 220 is adapted to output actuation force, the actuator 1000 can be used to adjust the lateral roll of the vehicle body when turning.

[0072] like Figure 4As shown, the elastic member 300 is arranged on the second transmission mechanism 220, and the elastic member 300 is used to make the second transmission mechanism 220 directly or indirectly abut at least part of the first transmission mechanism 210. So that the first transmission mechanism 210 and the second transmission mechanism 220 can directly or indirectly limit each other, to a certain extent, avoid the relative displacement of the first transmission mechanism 210 and the second transmission mechanism 220, improve the structural stability of the transmission assembly 200, so that the second transmission mechanism 220 and the first transmission mechanism 210 can be effectively closely transmitted along the axial direction of the actuator 1000, and the working performance of the transmission assembly 200 is guaranteed.

[0073] At the same time, by using the elastic member 300 to improve the structural stability of the transmission assembly 200, compared with the prior art of setting the bearing assembly and the supporting assembly to limit the transmission assembly 200, the structure of the actuator 1000 can be simplified, the assembly steps of the actuator 1000 are facilitated, the problem of missing parts in the assembly process is avoided, so as to reduce the assembly difficulty of the actuator 1000, and the manufacturing cost of the actuator 1000 can also be reduced, and the purpose of reducing the assembly difficulty and the manufacturing cost of the stabilizing rod assembly 2000 is achieved.

[0074] That is, the elastic member 300 arranged in the actuator 1000 of the embodiment of the application can make the second transmission mechanism 220 directly or indirectly abut at least part of the first transmission mechanism 210, so that the structural stability of the transmission assembly 200 is improved, and the assembly difficulty and the manufacturing cost of the actuator 1000 are reduced.

[0075] From the above structure, it can be seen that the actuator 1000 of the embodiment of the application sets the elastic member 300, and the elastic member 300 is arranged to make the second transmission mechanism 220 directly or indirectly abut at least part of the first transmission mechanism 210, to a certain extent, avoid the relative displacement of the first transmission mechanism 210 and the second transmission mechanism 220, improve the position stability of the second transmission mechanism 220 and the first transmission mechanism 210, simplify the structure of the actuator 1000, and then simplify the assembly steps of the actuator 1000, avoid the problem of missing parts in the assembly process, reduce the assembly difficulty of the actuator 1000, and also reduce the manufacturing cost of the actuator 1000, and the purpose of reducing the assembly difficulty and the manufacturing cost of the stabilizing rod assembly 2000 is achieved.

[0076] It can be understood that, compared with the prior art of limiting the transmission assembly 200 by matching the bearing assembly and the support assembly, the second transmission mechanism 220 and the first transmission mechanism 210 are directly or indirectly abutted by the elastic member 300, which can limit the transmission assembly 200, simplify the structure of the actuator 1000, facilitate the assembly of the actuator 1000, and reduce the assembly difficulty of the actuator 1000.

[0077] In some embodiments, the elastic member 300 is arranged near the axial end of the transmission assembly 200 and abuts the first transmission mechanism 210 or the second transmission mechanism 220, so as to directly or indirectly abut the second transmission mechanism 220 and the first transmission mechanism 210 by the elastic member 300, reduce the difficulty of directly or indirectly abutting the second transmission mechanism 220 and the first transmission mechanism 210, and improve the structural stability of the transmission assembly 200.

[0078] It should be noted that, by arranging the elastic member 300 near the axial end of the transmission assembly 200 and abutting the first transmission mechanism 210 or the second transmission mechanism 220, the axial displacement of the first transmission mechanism 210 or the second transmission mechanism 220 is limited by the elastic member 300, and at the same time, due to the direct or indirect abutment of the second transmission mechanism 220 and the first transmission mechanism 210, when the elastic member 300 limits the axial displacement of one of the first transmission mechanism 210 and the second transmission mechanism 220, the other one of the first transmission mechanism 210 and the second transmission mechanism 220 can limit the axial displacement of the other one of the first transmission mechanism 210 and the second transmission mechanism 220, thereby achieving the purpose of limiting the axial displacement of the first transmission mechanism 210 and the second transmission mechanism 220, and due to the direct or indirect abutment of the second transmission mechanism 220 and the first transmission mechanism 210, the relative position of the second transmission mechanism 220 and the first transmission mechanism 210 in the radial and circumferential directions is also limited, thereby achieving the purpose of limiting the displacement of the second transmission mechanism 220 and the first transmission mechanism 210, improving the position stability of the second transmission mechanism 220 and the first transmission mechanism 210, and achieving the purpose of improving the structural stability of the transmission assembly 200 by the elastic member 300, which to some extent guarantees the working performance of the transmission assembly 200.

[0079] Meanwhile, by arranging the elastic member 300 close to the axial end of the transmission assembly 200, the elastic member 300 can also be used to absorb the axial impact received by the transmission assembly 200, which on one hand reduces the damage of the axial impact to the transmission assembly 200 to a certain extent, prolongs the service life of the transmission assembly 200, and on the other hand enables the transmission assembly 200 to run smoothly, improves the working efficiency of the transmission assembly 200, and further improves the working capacity of the actuator 1000. In addition, when the transmission assembly 200 stops running, the elastic member 300 can also be used to support the transmission assembly 200, so as to avoid the transmission assembly 200 from tilting and ensure the working performance of the transmission assembly 200.

[0080] In addition, since the elastic member 300 has a certain amount of expansion, arranging the elastic member 300 close to the axial end of the transmission assembly 200 can also be used to compensate for the manufacturing tolerance of the transmission assembly 200, so that the first transmission mechanism 210 and the second transmission mechanism 220 with a certain manufacturing tolerance can be effectively assembled into the actuator 1000, and the first transmission mechanism 210 and the second transmission mechanism 220 can be effectively arranged in sequence along the axial direction of the actuator 1000 and transmit to each other, which reduces the assembly difficulty of the actuator 1000 and ensures the working performance of the actuator 1000.

[0081] That is, the elastic member 300 of the present application has at least the following effects:

[0082] First, the displacement of the first transmission mechanism 210 and the second transmission mechanism 220 is limited, which not only improves the structural stability of the transmission assembly 200, but also simplifies the structure of the actuator 1000.

[0083] Second, the damage of the axial impact to the transmission assembly 200 is reduced, and the service life of the transmission assembly 200 is prolonged.

[0084] Third, the transmission assembly 200 is provided with a certain degree of axial stiffness, so as to avoid the transmission assembly 200 from tilting when the transmission assembly 200 stops running, and ensure the working performance of the transmission assembly 200.

[0085] Fourth, the manufacturing tolerance of the transmission assembly 200 is compensated, so that the first transmission mechanism 210 and the second transmission mechanism 220 can be effectively arranged in sequence along the axial direction of the actuator 1000 and transmit to each other, which reduces the assembly difficulty of the actuator 1000.

[0086] In some embodiments, as shown in Figure 4 the elastic member 300 is formed as a spring, which not only ensures the working performance of the elastic member 300, but also reduces the forming difficulty of the elastic member 300.

[0087] In some embodiments, as shown in Figure 4As shown, the elastic member 300 is in abutting engagement with the second transmission mechanism 220, and the elastic member 300 can apply a force directed to the first sun gear 211 to the second sun gear 221. In this way, the elastic member 300 is used to realize the direct or indirect abutting engagement between the second transmission mechanism 220 and the first transmission mechanism 210, so as to reduce the difficulty of abutting engagement between the second transmission mechanism 220 and the first transmission mechanism 210, thereby facilitating the mutual limiting of the first transmission mechanism 210 and the second transmission mechanism 220 by the elastic member 300, while simplifying the structure of the actuator 1000, and improving the structural stability of the transmission assembly 200, and ensuring the working performance of the transmission assembly 200.

[0088] In some embodiments, as shown in Figure 4 The elastic member 300 is arranged near the axial end of the second transmission mechanism 220, so as to realize the abutting engagement between the elastic member 300 and the second transmission mechanism 220, thereby facilitating the limiting of the displacement of the second transmission mechanism 220 by the elastic member 300, so that at least part of the second transmission mechanism 220 is in direct or indirect abutting engagement with the first transmission mechanism 210, and the difficulty of abutting engagement between the second transmission mechanism 220 and the first transmission mechanism 210 is reduced.

[0089] In a specific example, as shown in Figure 4 The elastic member 300 is in abutting engagement with at least part of the axial end of the second transmission mechanism 220, so as to realize the direct or indirect abutting engagement between the second transmission mechanism 220 and the first transmission mechanism 210 by the elastic member 300.

[0090] In addition, by abutting the elastic member 300 with at least part of the axial end of the second transmission mechanism 220, when the transmission assembly 200 is subjected to external axial impact, the elastic member 300 acts on the second transmission mechanism 220 and elastically deforms, so as to realize the absorption of part of the axial impact force by the elastic member 300, reduce the damage degree of the axial impact on the transmission assembly 200, and prolong the service life of the transmission assembly 200.

[0091] In some embodiments, as shown in Figure 4 The first transmission mechanism 210 includes a first sun gear 211, a first planet gear 212, a first outer gear ring, and a first planet carrier 213, the first sun gear 211, the first planet gear 212, and the first outer gear ring are in turn in meshing engagement with each other, the first sun gear 211 is connected with the driving member 100, and the first planet gear 212 and the first planet carrier 213 are rotationally connected. In this way, during the operation of the driving member 100, the driving force of the driving member 100 can be received and transmitted by the first transmission mechanism 210, so as to realize different transmission ratios and power transmission, and to ensure the performance of the actuator 1000 to a certain extent.

[0092] It should be noted that by arranging the first carrier 213 and arranging the first carrier 213 in rotation connection with the first planetary gear 212, on the one hand, the first planetary gear 212 can be supported by the first carrier 213, and when the first planetary gear 212 is provided with a plurality of first planetary gears 212, the first sun gear 211 can effectively drive the plurality of first planetary gears 212 to rotate to ensure the performance of the first transmission mechanism 210, on the other hand, the first sun gear 211 can also be used to control the rotation of the first carrier 213, so as to facilitate the first transmission mechanism 210 to receive and transmit the driving force of the driving member 100.

[0093] In a specific example, because the first sun gear 211 is connected with the driving member 100, when the driving member 100 acts, the driving member 100 first drives the first sun gear 211 to rotate, because the first sun gear 211, the first planetary gear 212 and the first outer gear ring are sequentially engaged with each other, when the first sun gear 211 rotates, the first sun gear 211 can drive the first planetary gear 212 and the first outer gear ring to rotate, because the first carrier 213 is in rotation connection with the first planetary gear 212, when the first sun gear 211 drives the first planetary gear 212 to rotate, the first planetary gear 212 can be used to drive the first carrier 213 to rotate, so as to realize the transmission of the rotation force.

[0094] At the same time, by arranging the first transmission mechanism 210 to include the first sun gear 211, the first planetary gear 212, the first outer gear ring and the first carrier 213, the first transmission mechanism 210 can also be formed as a planetary gear structure, so that the first transmission mechanism 210 has the characteristics of compact structure and small space occupation.

[0095] It should be noted that because the second transmission mechanism 220 and the first transmission mechanism 210 are directly or indirectly abutted by the elastic member 300 in the application, the second transmission mechanism 220 and the first transmission mechanism 210 are radially limited, so that the radial direction of the first transmission mechanism 210 is changed from constraint to floating. Compared with constraint, floating can make the first planetary gear 212 automatically centering according to the meshing condition, which is conducive to the uniform distribution of load between the first planetary gears 212, and to a certain extent, ensures the working performance of the first transmission mechanism 210.

[0096] In some embodiments, as Figure 4As shown, the second transmission mechanism 220 comprises a second sun gear 221, a second planetary gear 222, a second outer gear ring and a second carrier 223, the second sun gear 221, the second planetary gear 222 and the second outer gear ring are sequentially and mutually meshed, the second sun gear 221 is in transmission connection with the first carrier 213, the second planetary gear 222 and the second carrier 223 are in rotation connection, and the second carrier 223 is used for outputting the actuating force. In order to adjust the lateral roll of the vehicle body when the vehicle body turns, the vehicle body is kept balanced as much as possible, so as to improve the riding comfort of the vehicle, so as to achieve the purpose of improving the riding comfort of the vehicle by using the actuator 1000.

[0097] It should be noted that the transmission connection between the second sun gear 221 and the first carrier 213 can be understood as that the first carrier 213 can drive the second sun gear 221 to rotate.

[0098] Meanwhile, the beneficial effects generated by setting the second carrier 223 and the rotation connection between the second carrier 223 and the second planetary gear 222 can be referred to the beneficial effects generated by setting the first carrier 213 and the rotation connection between the first carrier 213 and the first planetary gear 212, which will not be repeated here.

[0099] Through the above setting, in a specific example, when the driving member 100 acts and drives the first carrier 213 to rotate, the first carrier 213 drives the second sun gear 221 to rotate. Since the second sun gear 221, the second planetary gear 222 and the second outer gear ring are sequentially and mutually meshed, when the second sun gear 221 rotates, the second sun gear 221 can drive the second planetary gear 222 and the second outer gear ring to rotate. Since the second carrier 223 is in rotation connection with the second planetary gear 222, when the second sun gear 221 drives the second planetary gear 222 to rotate, the second carrier 223 can be driven to rotate by the second planetary gear 222, so as to output the actuating force, realize the transmission of force, and facilitate the adjustment of the lateral roll of the vehicle body when the vehicle body turns.

[0100] Meanwhile, by setting the second transmission mechanism 220 to comprise the second sun gear 221, the second planetary gear 222, the second outer gear ring and the second carrier 223, the second transmission mechanism 220 can be formed as a planetary gear structure, so as to have the characteristics of compact structure and small space occupation.

[0101] It should be noted that, since the elastic member 300 is used to make the second transmission mechanism 220 directly or indirectly abut against at least part of the first transmission mechanism 210 to achieve radial limiting of the second transmission mechanism 220 and the first transmission mechanism 210, the radial of the second transmission mechanism 220 is changed from being constrained to being floating. Compared with the constraint, the floating can make the second planetary gears 222 automatically align according to the meshing condition, which is conducive to the uniform distribution of the load between the second planetary gears 222 and ensures the working performance of the second transmission mechanism 220 to some extent.

[0102] In some embodiments, the first sun gear 211 directly or indirectly abuts against the second sun gear 221. In this way, the second transmission mechanism 220 directly or indirectly abuts against at least part of the first transmission mechanism 210, which reduces the abutting difficulty of the second transmission mechanism 220 and the first transmission mechanism 210, so that the first transmission mechanism 210 and the second transmission mechanism 220 can limit each other, which to some extent avoids the relative displacement of the first transmission mechanism 210 and the second transmission mechanism 220, improves the structural stability of the transmission assembly 200, and enables the second transmission mechanism 220 and the first transmission mechanism 210 to be effectively closely transmitted along the axial direction of the actuator 1000, thereby ensuring the working performance of the transmission assembly 200.

[0103] In some embodiments, as shown in Figure 4 The driving member 100 includes a driving shaft 110, and the outer periphery of the driving shaft 110 is provided with a rack to form the first sun gear 211. That is, the first sun gear 211 is directly defined by the driving shaft 110, so that the driving shaft 110 and the first sun gear 211 are formed as an integral piece. On the one hand, this facilitates the connection of the first sun gear 211 and the driving member 100, reduces the connection difficulty of the first sun gear 211 and the driving member 100, thereby facilitating the rotation of the first sun gear 211 by the driving member 100, and further facilitating the driving of the first transmission mechanism 210, which reduces the driving difficulty of the first transmission mechanism 210. On the other hand, this also avoids the need to separately provide the first sun gear 211, thereby simplifying the structure of the first transmission mechanism 210. In this way, not only the internal space of the actuator 1000 can be saved, but also the assembly and installation of the first transmission mechanism 210 are facilitated, which reduces the assembly difficulty of the actuator 1000 and facilitates the reduction of the manufacturing cost of the actuator 1000.

[0104] In a specific example, the rack can be machined on the outer periphery of the driving shaft 110 after the machining of the driving shaft 110 is completed, so as to form the first sun gear 211. In this way, the forming difficulty of the first sun gear 211 is reduced, the connection step of the driving shaft 110 and the first sun gear 211 is omitted, and the connection strength of the driving shaft 110 and the first sun gear 211 is increased, so that the rotation of the first sun gear 211 can be effectively driven by the driving member 100.

[0105] It should be noted that in the prior art, the displacement of the second transmission mechanism 220 and the first transmission mechanism 210 is usually limited by setting bearing assemblies, support assemblies and other structural members, and the bearing assemblies, support assemblies and other structural members are usually arranged at the radial outer periphery of the drive shaft 110 and arranged along the axial direction of the drive shaft 110, which results in that the axial extension length of the drive shaft 110 is too long. In the present application, the displacement of the second transmission mechanism 220 and the first transmission mechanism 210 is limited by setting the elastic member 300, which can eliminate the setting of the bearing assemblies, support assemblies and other structural members, avoid setting too many structural members at the outer periphery of the drive shaft 110, and thus adaptively shorten the axial extension length of the drive shaft 110. Since the part of the drive shaft 110 extending in the axial direction and protruding from the driving member 100 is equivalent to a cantilever beam, shortening the part of the drive shaft 110 protruding from the driving member 100 is conducive to reducing the initial rotational speed of the driving member 100. Since the drive shaft 110 serves as the input end of the transmission assembly 200, this can to some extent avoid the problem that the vibration and noise of the transmission assembly 200 are serious due to the large initial rotational speed of the driving member 100, thereby reducing the noise generated by the transmission assembly 200 during operation, protecting the transmission assembly 200 from vibration damage, and prolonging the service life of the transmission assembly 200.

[0106] In some embodiments, as shown in Figure 4 The elastic member 300 is arranged in the mounting groove 2211 and applies a force to the second sun gear 221 directed towards the first sun gear 211, so that the second sun gear 221 directly or indirectly abuts against the first sun gear 211. Thus, at least part of the second transmission mechanism 220 and the first transmission mechanism 210 can directly or indirectly abut against each other, achieving the purpose of limiting the first transmission mechanism 210 and the second transmission mechanism 220 by the elastic member 300.

[0107] In a specific example, the elastic member 300 is arranged in the mounting groove 2211 and is in a squeezed state. The elastic member 300 has an elastic restoring force during the squeezing process, which is applied to the second sun gear 221. When the second sun gear 221 and the first sun gear 211 do not directly or indirectly abut against each other, the elastic restoring force can drive the second sun gear 221 to move towards the first sun gear 211, so as to realize the direct or indirect abutment between the second sun gear 221 and the first sun gear 211.

[0108] In some embodiments, as shown in Figure 4As shown, the mounting groove 2211 includes a first mounting groove 22111 and a second mounting groove 22112 arranged in sequence along the axial direction thereof, the inner diameter of the first mounting groove 22111 is greater than that of the second mounting groove 22112, so as to form a step face 22113 at the connection between the first mounting groove 22111 and the second mounting groove 22112, and the elastic member 300 is arranged in the first mounting groove 22111 and abuts against the step face 22113. In this way, the step face 22113 is used to support and limit the elastic member 300, so that the elastic member 300 can be kept within a certain elastic force range, thereby facilitating the abutting cooperation between the elastic member 300 and the second sun gear 221, and facilitating the direct or indirect abutting cooperation between the first sun gear 211 and the second sun gear 221, so that at least part of the second transmission mechanism 220 and the first transmission mechanism 210 can directly or indirectly abut against each other, thereby achieving the purpose of limiting the first transmission mechanism 210 and the second transmission mechanism 220 by using the elastic member 300.

[0109] In some embodiments, as shown in FIG. 6, the elastic member 300 is arranged in the mounting groove 2211 and abuts against the step face 22113. Figure 4 As shown, one end of the elastic member 300 abuts against the step face 22113, and the other end of the elastic member 300 abuts against the second carrier 223, and the second carrier 223 is used to support the elastic member 300, so as to achieve the abutting cooperation between the elastic member 300 and the second sun gear 221.

[0110] Of course, in other embodiments, the inner diameters of the mounting groove 2211 at different positions along the axial direction thereof can also be set to be the same, and then a protrusion (not shown in the example) is arranged on the inner wall of the mounting groove 2211, the protrusion extends along the circumferential direction of the mounting groove 2211, and the elastic member 300 is arranged in the mounting groove 2211 and abuts against the protrusion, so as to achieve the abutting cooperation between the elastic member 300 and the second sun gear 221.

[0111] In some embodiments, as shown in FIG. 6, the elastic member 300 is arranged in the mounting groove 2211 and abuts against the step face 22113. Figure 4As shown, the mounting groove 2211 penetrates the second sun gear 221 along the axial direction of the second sun gear 221, and the mounting groove 2211 is adapted to fill with lubricating medium. That is, the mounting groove 2211 is used not only for mounting the second sun gear 221, but also for filling with lubricating medium, because the mounting groove 2211 penetrates the second sun gear 221 along the axial direction of the second sun gear 221, when the mounting groove 2211 is filled with lubricating medium, the lubricating medium can fill between the second sun gear 221 and the first sun gear 211, because the first sun gear 211 and the second sun gear 221 directly or indirectly abut, so that the direct or indirect abutting parts of the first sun gear 211 and the second sun gear 221 can be lubricated by the lubricating medium, which facilitates reducing the friction between the first sun gear 211 and the second sun gear 221, while realizing the relative rotation of the first sun gear 211 and the second sun gear 221, and also avoids the damage of the first sun gear 211 and the second sun gear 221 due to friction, thereby prolonging the service life of the first sun gear 211 and the second sun gear 221.

[0112] Meanwhile, by filling the mounting groove 2211 with lubricating medium, because the elastic member 300 is arranged in the mounting groove 2211, the elastic member 300 can also be lubricated by the lubricating medium, so that the elastic member 300 can effectively stretch and contract under the action of external force, which is conducive to improving the working efficiency of the elastic member 300.

[0113] Alternatively, the lubricating medium can be lubricating grease or lubricant, etc. In this way, when the lubricating medium is filled into the mounting groove 2211, the direct or indirect abutting parts of the first sun gear 211 and the second sun gear 221 can be lubricated by the lubricating medium, the friction between the first sun gear 211 and the second sun gear 221 is reduced, the working efficiency of the first sun gear 211 and the second sun gear 221 is improved, and at the same time, the first sun gear 211 and the second sun gear 221 are prevented from being damaged due to friction to some extent, thereby prolonging the service life of the first sun gear 211 and the second sun gear 221.

[0114] In some embodiments, as shown in Figure 4 As shown, the first sun gear 211 is provided with a containing groove 2111, and the containing groove 2111 is adapted to fill with lubricating medium. In order to lubricate the direct or indirect abutting parts of the first sun gear 211 and the second sun gear 221 by the lubricating medium, and reduce the friction between the first sun gear 211 and the second sun gear 221.

[0115] In some embodiments, as shown in Figure 4As shown, the accommodating groove 2111 is communicated with the mounting groove 2211. In this way, the lubricating medium in the accommodating groove 2111 can flow into the mounting groove 2211, so as to facilitate the flow of the lubricating medium, so that the lubricating medium can effectively fill between the first sun gear 211 and the second sun gear 221, so as to lubricate the direct or indirect abutment of the first sun gear 211 and the second sun gear 221, and reduce the friction between the first sun gear 211 and the second sun gear 221.

[0116] In some embodiments, as shown in Figure 4 As shown, the axial extension direction of the accommodating groove 2111 is smaller than the length of the drive shaft 110. Here, it can be understood that when the first sun gear 211 is directly formed on the drive shaft 110, the axial extension direction of the accommodating groove 2111 on the first sun gear 211 is smaller than the length of the drive shaft 110, avoiding that the extension length of the accommodating groove 2111 is too long, on the one hand, avoiding that the structural strength of the drive shaft 110 is reduced due to the opening of the longer accommodating groove 2111, and on the other hand, it can also avoid that more lubricating medium is filled in the accommodating groove 2111, and at the same time, it can also reduce the difficulty of forming the accommodating groove 2111.

[0117] Of course, in other embodiments, the axial extension direction of the accommodating groove 2111 can also be the same as the length of the drive shaft 110, that is, the accommodating groove 2111 extends through the drive shaft 110 along the axial extension direction of the drive shaft 110.

[0118] In some embodiments, as shown in Figure 4 and Figure 4 As shown, the transmission assembly 200 further comprises a third transmission mechanism 230, which is arranged between the first transmission mechanism 210 and the second transmission mechanism 220 in the axial direction of the actuator 1000, and the third transmission mechanism 230 is in transmission cooperation with the first transmission mechanism 210 and the second transmission mechanism 220, respectively, and the elastic member 300 is used to make at least part of the third transmission mechanism 230 directly abut with at least part of the first transmission mechanism 210 and at least part of the second transmission mechanism 220, respectively. Among them, by arranging the third transmission mechanism 230 in transmission cooperation with the first transmission mechanism 210 and the second transmission mechanism 220, respectively, the cooperative transmission of the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 is realized, which facilitates the cooperative transmission of power by the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220, so as to realize different transmission ratios and power transmission, and to ensure the performance of the actuator 1000 to a certain extent.

[0119] Meanwhile, by setting the elastic member 300 to directly abut at least part of the third transmission mechanism 230 with at least part of the first transmission mechanism 210 and at least part of the second transmission mechanism 220 respectively, the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 can be limited relative to each other, to a certain extent, to avoid relative displacement of the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220, improve the structural stability of the transmission assembly 200, so that the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 can be effectively and closely transmitted along the axial direction of the actuator 1000, to ensure the working performance of the transmission assembly 200, and facilitate power transmission by the transmission assembly 200.

[0120] In addition, by setting the third transmission mechanism 230 between the first transmission mechanism 210 and the second transmission mechanism 220, the transmission assembly 200 can be composed of a three-stage planetary gear structure, so that the transmission assembly 200 forms a speed reducer device, which increases torque and reduces transmission speed, to a certain extent, to ensure the working performance of the transmission assembly 200.

[0121] In the description of the utility model, the features limited by "first", "second" and "third" can be explicitly or implicitly include one or more features, for distinguishing the description features, without order and without difference.

[0122] In some embodiments, in combination with Figure 2 and Figure 3 As shown, the third transmission mechanism 230 includes a third sun gear 231, a third planetary gear 232, a third outer gear ring and a third planet carrier 233, the third sun gear 231, the third planetary gear 232 and the third outer gear ring are sequentially and mutually meshed, the third sun gear 231 is fixedly connected with the first planet carrier 213, the third planetary gear 232 and the third planet carrier 233 are rotationally connected, and the third planet carrier 233 is fixedly connected with the second sun gear 221, to realize cooperative transmission of the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220.

[0123] In a specific example, since the third sun gear 231 is fixedly connected with the first carrier 213, when the driving member 100 drives the first sun gear 211 to rotate and drives the first carrier 213 to rotate, the first carrier 213 drives the third sun gear 231 to rotate, since the third sun gear 231, the third planetary gear 232 and the third outer gear ring are sequentially and mutually meshed, the third sun gear 231 is used to control the rotation of the third planetary gear 232, the third planetary gear 232 drives the third carrier 233 to rotate, since the third carrier 233 is fixedly connected with the second sun gear 221, at this time, the third carrier 233 is used to drive the second sun gear 221 to rotate, so as to realize the transmission connection between the second sun gear 221 and the first carrier 213, and finally the actuating force is output through the second carrier 223 to adjust the lateral roll of the vehicle body when the vehicle turns.

[0124] In some embodiments, as shown in Figure 2 The third sun gear 231 is in abutting connection with the first sun gear 211 and the second sun gear 221 respectively, so that at least part of the third transmission mechanism 230 can abut against at least part of the second transmission mechanism 220 and the first transmission mechanism 210 respectively, so that the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 can be limited relative to each other, to a certain extent, to avoid the relative displacement of the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220, improve the structural stability of the transmission assembly 200, so that the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 can be effectively and closely transmitted along the axial direction of the actuator 1000, to ensure the working performance of the transmission assembly 200, and facilitate the transmission of power by the transmission assembly 200.

[0125] In some embodiments, as shown in Figure 3 The driving shaft 110 abuts against the left side of the third sun gear 231, the second sun gear 221 abuts against the right side of the third sun gear 231, and the elastic member 300 is arranged on the second sun gear 221 and is in abutting connection with the second sun gear 221, so as to realize the abutting connection of the first sun gear 211, the third sun gear 231 and the second sun gear 221, so that at least part of the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 can abut against each other, to achieve the purpose of limiting the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 by the elastic member 300.

[0126] At the same time, the elastic member 300 can also provide certain axial stiffness support for the entire transmission assembly 200, to avoid the first sun gear 211, the third sun gear 231 and the second sun gear 221 from falling down when they stop rotating, and facilitate the balance stability of the entire transmission assembly 200.

[0127] In addition, the elastic member 300 can compensate for manufacturing tolerances of the drive shaft 110, the second sun gear 221 and the third sun gear 231, so as to compensate for cumulative tolerances of the drive shaft 110, the second sun gear 221 and the third sun gear 231, and reduce installation difficulty of the transmission assembly 200.

[0128] In some embodiments, as shown in Figure 3 The third sun gear 231 is provided with a communication groove 2311 penetrating through the third sun gear 231 along an axial direction of the third sun gear 231, and the communication groove 2311 is filled with lubricating medium. In this way, the abutting positions of the first sun gear 211 and the third sun gear 231 and the abutting positions of the third sun gear 231 and the second sun gear 221 can be lubricated by the lubricating medium, the friction between the first sun gear 211 and the third sun gear 231 and the friction between the third sun gear 231 and the second sun gear 221 can be reduced, the first sun gear 211, the third sun gear 231 and the second sun gear 221 can rotate relatively, and the first sun gear 211, the third sun gear 231 and the second sun gear 221 can be prevented from being damaged due to friction, so as to prolong the service life of the first sun gear 211, the third sun gear 231 and the second sun gear 221.

[0129] In some embodiments, as shown in Figure 3 The communication groove 2311 communicates with the mounting groove 2211 and the accommodating groove 2111. In this way, when the third sun gear 231 is provided, the third sun gear 231 is provided with the communication groove 2311 communicating with the mounting groove 2211 and the accommodating groove 2111, so that the mounting groove 2211 and the accommodating groove 2111 can communicate with each other, and the lubricating medium in the mounting groove 2211 can flow into the accommodating groove 2111, so as to lubricate the abutting positions of the first sun gear 211 and the third sun gear 231 and the abutting positions of the third sun gear 231 and the second sun gear 221 by the lubricating medium, reduce the friction between the first sun gear 211 and the third sun gear 231 and the friction between the third sun gear 231 and the second sun gear 221, enable the first sun gear 211, the third sun gear 231 and the second sun gear 221 to rotate relatively, and prevent the first sun gear 211, the third sun gear 231 and the second sun gear 221 from being damaged due to friction, so as to prolong the service life of the first sun gear 211, the third sun gear 231 and the second sun gear 221.

[0130] In a specific example, a grease storage cavity is formed between the mounting groove 2211, the communication groove 2311 and the accommodating groove 2111, and is used for storing the lubricating medium, so as to provide the lubricating medium for the frictional movement between the drive shaft 110, the third sun gear 231 and the second sun gear 221.

[0131] In some embodiments, as shown in Figure 3As shown, the communication groove 2311 includes a first communication groove 23111 and a second communication groove 23112, and the inner diameter of the first communication groove 23111 is greater than that of the second communication groove 23112. Due to the different sizes of the first sun gear 211 and the second sun gear 221, the diameter of the mounting groove 2211 on the second sun gear 221 is different from that of the accommodating groove 2111 on the first sun gear 211. If the diameter of the communication groove 2311 is set to be the same as that of the mounting groove 2211, the diameter of the communication groove 2311 is likely to be large, which reduces the structural strength of the third sun gear 231. If the diameter of the communication groove 2311 is set to be the same as that of the accommodating groove 2111, the diameter of the communication groove 2311 is likely to be small, which is not conducive to the communication of the communication groove 2311 and the mounting groove 2211, and further increases the difficulty of the flow of the lubricating medium.

[0132] Based on this, the communication groove 2311 is provided to include the first communication groove 23111 and the second communication groove 23112, and the inner diameter of the first communication groove 23111 is greater than that of the second communication groove 23112. In this way, the communication groove 2311 can communicate with the mounting groove 2211 and the accommodating groove 2111 respectively, and at the same time, the structural strength of the third sun gear 231 is not excessively reduced.

[0133] In some embodiments, as shown in Figure 3 , Figure 3 and Figure 2 , the driving member 100 includes a first housing 120, and the transmission assembly 200 includes a second housing 240. The first housing 120 and the second housing 240 are arranged in sequence along the axial direction of the actuator 1000. In this way, the first housing 120 of the driving member 100 and the second housing 240 of the transmission assembly 200 can be in contact with the external air, which facilitates heat dissipation of the driving member 100 and the transmission assembly 200, and improves the heat dissipation performance of the driving member 100 and the transmission assembly 200.

[0134] It should be noted that during the durability test of the actuator 1000, it is monitored that the heat generation of the transmission assembly 200 is small, and the main heat source of the actuator 1000 is the driving member 100. When the driving member 100 is continuously loaded within half an hour, the temperature of the first housing 120 of the driving member 100 is as high as 70-80℃. However, the excessively high temperature can accelerate the performance decline of the driving member 100, cause a series of problems such as frequent failures of internal components of the driving member 100 and accelerated aging of insulating materials, shorten the service life of the driving member 100, and in the existing scheme, the driving member 100 is usually integrally installed in the second housing 240 of the transmission assembly 200, which is likely to form an annular gap between the driving member 100 and the housing of the transmission assembly 200. The annular gap forms a closed air cavity, which further causes the driving member 100 to be unable to directly contact the external environment, and reduces the heat dissipation performance of the driving member 100.

[0135] Based on this, the first shell 120 of the driving member 100 and the second shell 240 of the transmission assembly 200 are arranged in sequence along the axial direction of the actuator 1000, so that the first shell 120 of the driving member 100 and the second shell 240 of the transmission assembly 200 can be in contact with the air outside, facilitating heat dissipation of the driving member 100 and the transmission assembly 200, and improving the heat dissipation performance of the driving member 100 and the transmission assembly 200.

[0136] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 2 , the first transmission mechanism 210 and the second transmission mechanism 220 are arranged in the second shell 240, and the driving member 100 further comprises a driving shaft 110, which is arranged in the first shell 120 and at least part of the driving shaft 110 extends into the second shell 240 and is connected with the first transmission mechanism 210. Among them, by arranging the first transmission mechanism 210 and the second transmission mechanism 220 in the second shell 240, the first transmission mechanism 210 and the second transmission mechanism 220 can be protected by the second shell 240, and the service life of the first transmission mechanism 210 and the second transmission mechanism 220 can be prolonged; by arranging the driving shaft 110 in the first shell 120, the driving shaft 110 can be supported and protected by the first shell 120, avoiding damage to the driving shaft 110 from the outside, and prolonging the service life of the driving shaft 110.

[0137] At the same time, by arranging at least part of the driving shaft 110 to extend into the second shell 240 and be connected with the first transmission mechanism 210, the driving member 100 can drive the first transmission mechanism 210 to act, and then drive the transmission assembly 200 to act, to a certain extent, to ensure the working performance of the actuator 1000.

[0138] It should be further pointed out that when the transmission assembly 200 comprises a third transmission mechanism 230, the third transmission mechanism 230 is also arranged in the second shell 240, so as to realize the transmission cooperation between the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220, ensure the working performance of the transmission assembly 200, and at the same time, the second shell 240 can also be used to protect the third transmission mechanism 230, prolonging the service life of the third transmission mechanism 230.

[0139] In some embodiments, the first shell 120 is formed as a metal shell, which can not only improve the structural strength of the first shell 120, but also ensure the thermal conductivity of the first shell 120, further improving the heat dissipation performance of the driving member 100.

[0140] In summary, it can be understood that the prior art installs the driving member 100 as a whole in the second housing 240 of the transmission assembly 200, resulting in the driving member 100 needing to dissipate heat through a closed air cavity, and the thermal conductivity of the closed air is 0.023 w / cm*k. The application directly contacts the driving member 100 with the external air, and forms the first housing 120 of the driving member 100 into a metal housing, so as to realize conduction heat dissipation by the metal housing. The thermal conductivity of the metal housing is 44 w / cm*k, so that the heat conduction capacity of the metal housing is 1913 times that of the closed air, and the heat dissipation performance of the driving member 100 of the application is much higher than that of the prior art.

[0141] In some embodiments, the first housing 120 is made of 42CrMo (42 molybdenum chromium) so that the first housing 120 has high strength and toughness, prolonging the service life of the first housing 120.

[0142] In some embodiments, as shown in Figure 3 , Figure 4 and Figure 2 , the two ends of the first housing 120 and the second housing 240 are sleeved and fixedly connected. This reduces the difficulty of fixedly connecting the first housing 120 and the second housing 240.

[0143] It should be noted that the fixed connection of the first housing 120 and the second housing 240 described above can be welding, bonding, etc.

[0144] In some embodiments, as shown in Figure 3 and Figure 4 , the end of the first housing 120 facing the second housing 240 is provided with a first boss 121, and the first boss 121 is sleeved on the outer periphery of the second housing 240, so as to realize the sleeved connection of the first housing 120 and the second housing 240 and reduce the difficulty of connecting the first housing 120 and the second housing 240.

[0145] Of course, in other embodiments, a second boss (not shown in the example) can also be provided on the end of the second housing 240 facing the first housing 120, and the second boss is sleeved on the outer periphery of the first housing 120, so as to realize the sleeved connection of the first housing 120 and the second housing 240.

[0146] In specific embodiments, the driving member 100 and the transmission assembly 200 are processed separately, and after separate processing, the first boss 121 is sleeved on the outer periphery of the second housing 240, and the first housing 120 and the second housing 240 are welded, so as to realize the connected connection of the driving member 100 and the transmission assembly 200, and enable the first housing 120 of the driving member 100 to directly contact the atmosphere, so as to facilitate the timely conduction of heat of the driving member 100 to the atmosphere and improve the heat dissipation performance of the driving member 100.

[0147] Meanwhile, by machining the driving member 100 and the transmission assembly 200 separately, the machining difficulty of the driving member 100 and the transmission assembly 200 can be reduced.

[0148] The stabilizer bar assembly 2000 according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0149] In combination Figure 3 and Figure 4 , the stabilizer bar assembly 2000 according to the embodiments of the present application comprises an actuator 1000, a first stabilizer bar 1100 and a second stabilizer bar 1200.

[0150] The actuator 1000 is the aforementioned actuator 1000, and the specific structure of the actuator 1000 will not be described herein.

[0151] In combination Figure 1 and Figure 2 , the first stabilizer bar 1100 and the second stabilizer bar 1200 are respectively connected to the axial two ends of the actuator 1000, the first stabilizer bar 1100 is adapted to be connected to one side wheel, the second stabilizer bar 1200 is adapted to be connected to the other side wheel, and the actuator 1000 is used to drive the first stabilizer bar 1100 to rotate relative to the second stabilizer bar 1200. This ensures that the actuator 1000 can be used to adjust the lateral roll of the vehicle body during turning of the vehicle, so as to keep the vehicle body as balanced and stable as possible, thereby improving the ride comfort of the vehicle.

[0152] In some embodiments, in combination Figure 1 , Figure 2 and Figure 2 , the second carrier 223 of the second transmission mechanism 220 is connected to the first stabilizer bar 1100, so as to drive the first stabilizer bar 1100 to rotate relative to the second stabilizer bar 1200 by using the actuator 1000.

[0153] In a specific example, in combination Figure 3 and Figure 4 Figure 2 Figure 3 , when the driving member 100 drives the driving shaft 110 to rotate, the driving shaft 110 drives the first sun gear 211 to rotate, so as to drive the first transmission mechanism 210 to act, and the first transmission mechanism 210, the third transmission mechanism 230 and the second transmission mechanism 220 are cooperatively driven, so as to drive the second transmission mechanism 220 to act by using the driving member 100, and the second carrier 223 of the second transmission mechanism 220 is connected to the first stabilizer bar 1100, so as to drive the first stabilizer bar 1100 to rotate relative to the second stabilizer bar 1200 by using the actuator 1000.

[0154] Meanwhile, the actuator 1000 has the advantages of simple structure and excellent working performance, so the stabilizer bar assembly 2000 of the utility model can reduce the assembly difficulty and manufacturing cost of the stabilizer bar assembly 2000 while ensuring the working performance of the stabilizer bar assembly 2000.

[0155] The chassis of the utility model is described below.

[0156] The chassis of the utility model is described below.

[0157] The actuator 1000 is the aforementioned actuator 1000, and the stabilizer bar assembly 2000 is the aforementioned stabilizer bar assembly 2000, and the specific structure of the actuator 1000 and the stabilizer bar assembly 2000 is not described here.

[0158] The chassis of the utility model is described below.

[0159] The vehicle of the utility model is described below.

[0160] The vehicle of the utility model is described below.

[0161] The chassis is the aforementioned chassis, and the specific structure of the chassis is not described here.

[0162] As can be seen from the above structure, the vehicle of the utility model can prevent the entire vehicle from tilting and falling over to a certain extent during the turning process of the vehicle, avoid the occurrence of safety accidents, and thus improve the use safety of the vehicle.

[0163] In the description of the utility model, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0164] The specific structure of the actuator 1000, the stabilizer bar assembly 2000, the chassis and other components of the vehicle, such as the first stabilizer bar 1100 and the second stabilizer bar 1200, are known to those skilled in the art, and will not be described in detail here.

[0165] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An actuator, characterized by The utility model relates to a kind of actuator, comprising: Driving member (100); Transmission assembly (200), the transmission assembly (200) includes first transmission mechanism (210) and second transmission mechanism (220), the first transmission mechanism (210) and the second transmission mechanism (220) are sequentially arranged along the axial direction of the actuator and are in transmission with each other, the first transmission mechanism (210) is connected with the driving member (100), and the second transmission mechanism (220) is suitable for outputting actuating force; Resilient member (300), the resilient member (300) is arranged in the second transmission mechanism (220), and the resilient member (300) is used to make the second transmission mechanism (220) and at least part of the first transmission mechanism (210) directly or indirectly abut.

2. The actuator of claim 1, wherein, The first transmission mechanism (210) includes first sun gear (211), first planetary gear (212), first outer gear ring and first carrier (213), the first sun gear (211), the first planetary gear (212) and the first outer gear ring are sequentially engaged with each other, the first sun gear (211) is connected with the driving member (100), and the first planetary gear (212) and the first carrier (213) are rotatably connected; The second transmission mechanism (220) includes second sun gear (221), second planetary gear (222), second outer gear ring and second carrier (223), the second sun gear (221), the second planetary gear (222) and the second outer gear ring are sequentially engaged with each other, the second sun gear (221) is in transmission connection with the first carrier (213), the second planetary gear (222) and the second carrier (223) are rotatably connected, and the second carrier (223) is used to output the actuating force; The first sun gear (211) and the second sun gear (221) directly or indirectly abut.

3. The actuator of claim 2, wherein, The driving member (100) includes driving shaft (110), and the outer periphery of the driving shaft (110) is provided with a rack to form the first sun gear (211).

4. The actuator of claim 2, wherein, The second sun gear (221) is provided with mounting groove (2211) in it, the resilient member (300) is arranged in the mounting groove (2211), and the resilient member (300) applies force to the second sun gear (221) and points to the first sun gear (211), so that the second sun gear (221) and the first sun gear (211) directly or indirectly abut.

5. The actuator of claim 4, wherein, The mounting groove (2211) includes first mounting groove (22111) and second mounting groove (22112) sequentially arranged along its axial direction, the inner diameter of the first mounting groove (22111) is greater than the inner diameter of the second mounting groove (22112), to form step surface (22113) at the connection of the first mounting groove (22111) and the second mounting groove (22112), and the resilient member (300) is arranged in the first mounting groove (22111) and abuts against the step surface (22113).

6. The actuator of claim 4, wherein, The mounting groove (2211) penetrates the second sun gear (221) along the axial direction of the second sun gear (221), and the mounting groove (2211) is adapted to be filled with a lubricating medium.

7. The actuator of claim 3, wherein, The first sun gear (211) is provided with an accommodating groove (2111), and the accommodating groove (2111) is adapted to be filled with a lubricating medium.

8. The actuator of claim 7, wherein, The accommodating groove (2111) extends in an axial direction, and the length of the accommodating groove (2111) is less than the length of the driving shaft (110).

9. The actuator of claim 2, wherein, The transmission assembly (200) further comprises a third transmission mechanism (230), which is arranged between the first transmission mechanism (210) and the second transmission mechanism (220) in the axial direction of the actuator, and the third transmission mechanism (230) is in transmission cooperation with the first transmission mechanism (210) and the second transmission mechanism (220), respectively, and the elastic member (300) is used for directly abutting at least part of the third transmission mechanism (230) with at least part of the first transmission mechanism (210) and at least part of the second transmission mechanism (220), respectively.

10. The actuator of claim 9, wherein, The third transmission mechanism (230) comprises a third sun gear (231), a third planet gear (232), a third outer gear ring, and a third planet carrier (233), the third sun gear (231), the third planet gear (232), and the third outer gear ring are in meshing with each other in sequence, the third sun gear (231) is fixedly connected with the first planet carrier (213), the third planet gear (232) and the third planet carrier (233) are rotationally connected, and the third planet carrier (233) is fixedly connected with the second sun gear (221). The third sun gear (231) is in abutting cooperation with the first sun gear (211) and the second sun gear (221), respectively.

11. The actuator of claim 10, wherein, The third sun gear (231) is provided with a communication groove (2311) penetrating the third sun gear (231) along the axial direction of the third sun gear (231), and the communication groove (2311) is adapted to be filled with a lubricating medium.

12. The actuator of any one of claims 1-11, wherein, The driving member (100) comprises a first housing (120), and the transmission assembly (200) comprises a second housing (240), and the first housing (120) and the second housing (240) are arranged in sequence in the axial direction of the actuator.

13. The actuator of claim 12, wherein, The first transmission mechanism (210) and the second transmission mechanism (220) are arranged in the second housing (240), the driving member (100) further comprises a driving shaft (110), the driving shaft (110) is arranged in the first housing (120) and at least part of the driving shaft (110) extends into the second housing (240) and is connected with the first transmission mechanism (210).

14. The actuator of claim 12, wherein, The first housing (120) and the second housing (240) are fixedly connected by being sleeved on the two ends arranged opposite to each other.

15. A stabilizer bar assembly characterized by, The actuator comprises: The actuator according to any one of claims 1-14; A first stabilizer bar (1100) and a second stabilizer bar (1200) connected at axial ends of the actuator, the first stabilizer bar (1100) adapted to be connected to one side wheel, the second stabilizer bar (1200) adapted to be connected to the other side wheel, the actuator for driving the first stabilizer bar (1100) to rotate relative to the second stabilizer bar (1200).

16. A pan characterized by, An actuator according to any one of claims 1-14 or a stabilizer bar assembly according to claim 15.

17. A vehicle characterized by comprising: A chassis according to claim 16.

Images