Stabilizer bar and vehicle

Abstract

The invention provides a stabilizer bar and a vehicle. The stabilizer bar comprises an actuator outer cylinder, a motor front end cover, a motor rear end cover, a motor stator and a motor rotor. The motor front end cover and the motor rear end cover are respectively assembled and matched with the inner wall of the actuator outer cylinder so as to define an installation space. The inner wall of the actuator outer cylinder comprises a first section located in the installation space, the motor stator is assembled in the first section, and the motor rotor penetrates through the installation space and is rotationally connected with the motor front end cover and the motor rear end cover. According to the stabilizer bar, a motor structure which is integrally assembled is omitted, and the motor front end cover, the motor rear end cover, the motor stator and the motor rotor are respectively assembled in the actuator outer cylinder, so that the problem of complex process caused by the fact that the motor is integrally assembled to the actuator outer cylinder is avoided; and the motor front end cover, the motor rear end cover, the motor stator and the motor rotor are not packaged by the motor shell any more, so that parts are reduced, light weight is realized, and the heat dissipation effect and the overall performance of the motor are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a stabilizer bar and a vehicle. Background Art

[0002] Active stabilizers dynamically control vehicle roll, improving handling and comfort. The vehicle controller calculates the torque required to counteract vehicle roll based on inputs such as vehicle speed, steering wheel angle, roll acceleration, and height sensor. The active stabilizer then outputs torque based on the controller's torque command to control vehicle roll.

[0003] However, the driving mechanism in the related art is arranged outside the active stabilizer bar, or is assembled in the outer cylinder of the active stabilizer bar actuator through a shrink-fit process, which has technical problems such as occupying a large space or having a complex process. Summary of the Invention

[0004] The present application provides a stabilizer bar and a vehicle to solve related technical problems.

[0005] A first aspect of the present application provides a stabilizer bar, comprising an actuator outer cylinder, a motor front end cover, a motor rear end cover, a motor stator, and a motor rotor;

[0006] The motor front end cover and the motor rear end cover are respectively assembled and matched with the inner wall of the actuator outer cylinder to enclose an installation space;

[0007] The inner wall of the actuator outer cylinder includes a first section located in the installation space, and the motor stator is assembled in the first section; the motor rotor passes through the installation space and is rotatably connected to the motor front end cover and the motor rear end cover respectively.

[0008] Optionally, the inner wall of the actuator outer cylinder includes a second section, and the rear end cover of the motor is interference-fitted with the second section;

[0009] One end of the second segment is connected to the first segment, and the other end of the second segment is connected to the third segment. The third radial dimension of the third space enclosed by the third segment is larger than the second radial dimension of the second space enclosed by the second segment.

[0010] Optionally, the stabilizing bar further includes a motor transmission plate, and the motor transmission plate is assembled in the third space.

[0011] Optionally, the inner wall of the actuator outer cylinder includes a fourth section, and the front end cover of the motor is interference-fitted with the fourth section;

[0012] One end of the fourth section is connected to the first section, and the other end of the fourth section is connected to a fifth section. The fifth radial dimension of the fifth space surrounded by the fifth section is smaller than the fourth radial dimension of the fourth space surrounded by the fourth section, so as to form a first stepped structure. The first side of the front end cover of the motor is in limiting fit with the first stepped structure.

[0013] Optionally, the front end cover of the motor includes a second side opposite to the first side, and the second side is in limiting fit with the motor stator.

[0014] Optionally, in the axial direction of the outer cylinder of the actuator, one of the front end cover of the motor and the motor stator is provided with a protrusion, and the other is provided with a groove, and the protrusion is inserted into the groove.

[0015] Optionally, the stabilizer bar further includes a speed reducer, and at least a part of the gear assembly of the speed reducer is in interference fit with the fifth section.

[0016] Optionally, the inner wall of the outer cylinder of the actuator includes a sixth section connected to the fifth section, and the fourth section and the sixth section are located on both sides of the fifth section; the sixth radial dimension of the sixth space surrounded by the sixth section is smaller than the fifth radial dimension of the fifth space surrounded by the fifth section, so as to form a second stepped structure; the speed reducer is in limiting fit with the second stepped structure.

[0017] Optionally, at least one of the front end cover of the motor and the rear end cover of the motor includes an end cover body and an assembly structure;

[0018] The end cover body is provided with a shaft hole, and the motor rotor is rotatably installed in the shaft hole;

[0019] The assembly structure is connected to the end of the end cover body and is bent relative to the end cover body to extend along the axial direction of the outer cylinder of the actuator; the assembly structure is in interference fit with the inner wall of the outer cylinder.

[0020] According to a second aspect of the present application, a vehicle is provided, and the vehicle includes any stabilizer bar according to the first aspect.

[0021] The technical solution provided by the present application can at least achieve the following beneficial effects:

[0022] The stabilizer bar of the present application cancels the motor structure assembled as a whole, and separately assembles the front end cover of the motor, the rear end cover of the motor, the motor stator and the motor rotor in the outer cylinder of the actuator, which not only avoids the complex process caused by assembling the motor as a whole into the outer cylinder of the actuator, but also the front end cover of the motor, the rear end cover of the motor, the motor stator and the motor rotor are no longer encapsulated by the motor housing. Therefore, the number of components is also reduced, which helps to achieve lightweight, improve the heat dissipation effect of the motor and the overall performance.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a partial cross-sectional structure of a stabilizer bar in an exemplary embodiment of the present application;

[0025] Figure 2 yes Figure 1 A partial enlarged view at position I;

[0026] Figure 3 yes Figure 1 A partial enlarged view at position II.

[0027] Reference numerals:

[0028] Stabilizer bar 1; actuator outer cylinder 11; first section 111; installation space 112; second section 113; third section 114; fourth section 115; fifth section 116; sixth section 117;

[0029] Motor front end cover 12; protrusion 121; motor rear end cover 13; end cover body 131; assembly structure 132;

[0030] Motor stator 14 ; groove 141 ; motor rotor 15 ; reducer 16 ; motor transmission plate 17 . DETAILED DESCRIPTION

[0031] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0033] The active stabilizer bar can dynamically control vehicle roll, improving handling and comfort. The vehicle controller calculates the torque request required to resist vehicle roll based on input signals such as vehicle speed, steering wheel angle, roll acceleration, and height sensors. The active stabilizer bar outputs torque according to the controller's torque command to control vehicle body roll. However, in related technologies, the drive mechanism is arranged outside the active stabilizer bar or assembled inside the outer cylinder of the active stabilizer bar actuator through a hot sleeve process, resulting in technical problems such as large space occupation or complex processes.

[0034] This application provides a stabilizer bar. Figure 1 It is a schematic structural diagram of a stabilizer bar in an exemplary embodiment of this application. As Figure 1 shown, the stabilizer bar 1 includes an actuator outer cylinder 11, a motor front end cover 12, a motor rear end cover 13, a motor stator 14, and a motor rotor 15. The motor front end cover 12 and the motor rear end cover 13 are respectively assembled and fitted with the inner wall of the actuator outer cylinder 11 to enclose an installation space 112. The inner wall of the actuator outer cylinder 11 includes a first section 111 located within the installation space 112. The motor stator 14 is assembled on the first section 111. The motor rotor 15 passes through the installation space 112 and is respectively rotatably connected to the motor front end cover 12 and the motor rear end cover 13.

[0035] The above stabilizer bar 1 cancels the motor structure assembled as a whole, and separately assembles the motor front end cover 12, the motor rear end cover 13, the motor stator 14, and the motor rotor 15 in the actuator outer cylinder 11. This not only avoids the complex process problem caused by assembling the motor as a whole into the actuator outer cylinder 11, but also the motor front end cover 12, the motor rear end cover 13, the motor stator 14, and the motor rotor 15 are no longer encapsulated by the motor housing. Therefore, the number of components is also reduced, which helps to achieve lightweight, improve the motor heat dissipation effect and overall performance.

[0036] Figure 2 is Figure 1 a partial enlarged view at the I position. In the Figure 2 shown embodiment, the inner wall of the actuator outer cylinder 11 includes a second section 113. The motor rear end cover 13 is in interference fit with the second section 113. One end of the second section 113 is connected to the first section 111, and the other end of the second section 113 is connected to a third section 114. The third radial dimension R2 of the third space surrounded by the third section 114 is greater than the second radial dimension R1 of the second space surrounded by the second section 113. The motor rear end cover 13 is in interference fit with the actuator outer cylinder 11. The inner wall of the outer cylinder forms a stepped inner circular structure through the second section 113 and the third section 114, which not only realizes a shorter interference assembly stroke between the motor rear end cover 13 and the outer cylinder, improves the assembly accuracy, and reduces the cleanliness risk brought by the interference wear of the too long stroke.

[0037] Further, the stabilizer bar 1 may further include a motor transmission plate 17, and the motor transmission plate 17 is assembled in the third space. Assembling the motor transmission plate 17 in the third space outside the installation space 112 not only facilitates the electrical connection between the motor transmission plate 17, the motor stator 14, and the motor rotor 15, but also avoids structural interference between the motor transmission plate 17 and the motor components.

[0038] Wherein, the edge of the motor transmission plate 17 may be in interference fit with the third section 114, and the stepped structure formed by the third section 114 and the second section 113 can also form axial limitation on the motor transmission plate 17 to avoid structural interference between the motor transmission plate 17 and the motor rear end cover 13.

[0039] Figure 3 Yes Figure 1 Partial enlarged view at the II position. In the Figure 3 illustrated embodiment, the inner wall of the actuator outer cylinder 11 may include a fourth section 115, and the motor front end cover 12 is in interference fit with the fourth section 115. One end of the fourth section 115 is connected to the first section 111, and the other end of the fourth section 115 is connected with a fifth section 116. The fifth radial dimension R4 of the fifth space surrounded by the fifth section 116 is smaller than the fourth radial dimension R5 of the fourth space surrounded by the fourth section 115 to form a first stepped structure, and the first side of the motor front end cover 12 is in limiting fit with the first stepped structure. The first stepped structure formed by the fourth section 115 and the fifth section 116 forms axial limitation on the motor front end cover 12 to avoid the motor front end cover 12 from moving axially towards the fifth section 116 side after interference fit.

[0040] In the above embodiment, the motor front end cover 12 includes a second side opposite to the first side, and the second side is in limiting fit with the motor stator 14. Axial limitation on the motor front end cover 12 is formed by the motor stator 14 to avoid the motor front end cover 12 from moving axially towards the first section 111 side after interference fit.

[0041] Wherein, in the axial direction of the actuator outer cylinder 11, one of the motor front end cover 12 and the motor stator 14 may be provided with a protrusion 121, and the other may be provided with a groove 141. The protrusion 121 is inserted into the groove 141 to limit the displacement of the motor front end cover 12 in the axial and radial directions. Through the insertion of the protrusion 121 and the groove 141 in the axial direction of the actuator outer cylinder 11, not only axial limitation is formed, but also radial limitation is obtained, which helps to enhance the assembly reliability and positioning accuracy of the motor front end cover 12.

[0042] In some embodiments, the stabilizer bar 1 further includes a speed reducer 16. At least a part of the gear assembly of the speed reducer 16 is in interference fit with the fifth section 116, and the first side of the motor front end cover 12 is in limit fit with the first stepped structure. The first stepped structure formed by the fourth section 115 and the fifth section 116 provides axial limit for the motor front end cover 12, avoiding structural interference between the motor front end cover 12 and the speed reducer 16.

[0043] In some embodiments, the inner wall of the actuator outer cylinder 11 may include a sixth section 117 connected to the fifth section 116. The fourth section 115 and the sixth section 117 are located on both sides of the fifth section 116. The sixth radial dimension R3 of the sixth space surrounded by the sixth section 117 is smaller than the fifth radial dimension R4 of the fifth space surrounded by the fifth section 116 to form a second stepped structure, and the speed reducer 16 is in limit fit with the second stepped structure. The speed reducer 16 is in limit fit with the second stepped structure. The second stepped structure formed by the sixth section 117 and the fifth section 116 provides axial limit for the speed reducer 16, avoiding the speed reducer 16 from moving axially towards the sixth section 117.

[0044] In the above embodiments, the two axial sides of the speed reducer 16 can be respectively in limit fit with the second stepped structure and the motor front end cover 12 to obtain a limit assembly effect.

[0045] In some embodiments, at least one of the motor front end cover 12 and the motor rear end cover 13 includes an end cover main body 131 and an assembly structure 132. The end cover main body 131 is provided with a shaft hole, and the motor rotor 15 is rotatably installed in the shaft hole. The assembly structure 132 is connected to the end of the end cover main body 131 and is bent relative to the end cover main body 131 to extend axially along the actuator outer cylinder 11, and the assembly structure 132 is in interference fit with the inner wall of the outer cylinder. The mating surface formed by the assembly structure 132 is in interference fit with the inner wall of the actuator outer cylinder 11, simplifying the assembly difficulty and helping to improve the reliability of the interference fit.

[0046] In the above embodiments, the stabilizer bar 1 may further include a first rocker arm and a second rocker arm. The first rocker arm and the second rocker arm are respectively connected to both ends of the actuator outer cylinder 11, and the second rocker arm is in transmission connection with the output end of the motor rotor 15. The first rocker arm and the second rocker arm can be respectively installed by connecting through mounting bushings to the vehicle frame, and the end parts of the first rocker arm and the second rocker arm are respectively connected to the suspension components of the vehicle to transmit torque.

[0047] During the operation of the stabilizer bar 1, when the actuator main body receives the relevant signal of the vehicle roll, it can control the motor to drive the second rocker arm to twist accordingly according to the above relevant signal. The first rocker arm also twists in the opposite direction due to the twist of the second rocker arm. The twists of the first rocker arm and the second rocker arm generate a torque against the above roll, thereby realizing roll feedback control.

[0048] The present application further provides a vehicle, which includes the above-mentioned stabilizer bar 1.

[0049] The stabilizer bar 1 eliminates the motor structure assembled as a whole, and separately assembles the motor front end cover 12, the motor rear end cover 13, the motor stator 14, and the motor rotor 15 in the actuator outer cylinder 11. This not only avoids the complex process problems caused by assembling the motor as a whole to the actuator outer cylinder 11, but also the motor front end cover 12, the motor rear end cover 13, the motor stator 14, and the motor rotor 15 are no longer encapsulated by the motor housing. Therefore, the number of components is also reduced, which helps to achieve lightweight, improve the motor heat dissipation effect and overall performance.

[0050] It should be noted that the above-mentioned vehicle can be a bus, an ambulance, a truck, a freight car, a commercial vehicle, a private car, etc., and the present application does not limit this.

[0051] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A stabilizer bar, characterized in that, It includes an actuator outer cylinder (11), a motor front end cover (12), a motor rear end cover (13), a motor stator (14) and a motor rotor (15); The motor front end cover (12) and the motor rear end cover (13) are respectively assembled and fitted with the inner wall of the actuator outer cylinder (11) to enclose an installation space (112); The inner wall of the actuator outer cylinder (11) includes a first section (111) located within the installation space (112), and the motor stator (14) is assembled on the first section (111); the motor rotor (15) passes through the installation space (112) and is rotatably connected to the motor front end cover (12) and the motor rear end cover (13) respectively.

2. The stabilizer bar according to claim 1, characterized in that, The inner wall of the actuator outer cylinder (11) includes a second section (113), and the motor rear end cover (13) is in interference fit with the second section (113); One end of the second section (113) is connected to the first section (111), and the other end of the second section (113) is connected to a third section (114). The third radial dimension of the third space enclosed by the third section (114) is greater than the second radial dimension of the second space enclosed by the second section (113).

3. The stabilizer bar according to claim 2, wherein It further includes a motor transmission plate (17), and the motor transmission plate (17) is assembled in the third space.

4. The stabilizer bar according to claim 1, characterized in that, The inner wall of the actuator outer cylinder (11) includes a fourth section (115), and the motor front end cover (12) is in interference fit with the fourth section (115); One end of the fourth section (115) is connected to the first section (111), and the other end of the fourth section (115) is connected to a fifth section (116). The fifth radial dimension of the fifth space enclosed by the fifth section (116) is less than the fourth radial dimension of the fourth space enclosed by the fourth section (115) to form a first stepped structure, and the first side of the motor front end cover (12) is in limiting fit with the first stepped structure.

5. The stabilizer bar according to claim 4, characterized in that, The motor front end cover (12) includes a second side opposite to the first side, and the second side is in limiting fit with the motor stator (14).

6. The stabilizer bar according to claim 5, characterized in that, Axially of the actuator outer cylinder (11), one of the motor front end cover (12) and the motor stator (14) is provided with a protrusion (121), and the other is provided with a groove (141), and the protrusion (121) is inserted into the groove (141).

7. The stabilizer bar according to claim 4, characterized in that, It further includes a reducer (16), and at least a part of the gear assembly of the reducer (16) is in interference fit with the fifth section (116).

8. The stabilizer bar according to claim 7, wherein, The inner wall of the actuator outer cylinder (11) includes a sixth section (117) connected to the fifth section (116). The fourth section (115) and the sixth section (117) are located on both sides of the fifth section (116); the sixth radial dimension of the sixth space enclosed by the sixth section (117) is less than the fifth radial dimension of the fifth space enclosed by the fifth section (116) to form a second stepped structure; the reducer (16) is in limiting fit with the second stepped structure.

9. The stabilizer bar according to claim 1, characterized in that, At least one of the front end cover (12) and the rear end cover (13) of the motor includes an end cover body (131) and an assembly structure (132); The end cover body (131) is provided with a shaft hole, and the motor rotor (15) is rotatably installed in the shaft hole; The assembly structure (132) is connected to the end of the end cover body (131) and is bent relative to the end cover body (131) to extend along the axial direction of the actuator outer cylinder (11); the assembly structure (132) is in interference fit with the inner wall of the outer cylinder.

10. A vehicle, characterized in that, Comprising a stabilizer bar (1) according to any one of claims 1-9.

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