Ring assembly and assembly method therefor, and vehicle powertrain

Abstract

Provided are a ring assembly and an assembly method therefor. The ring assembly comprises a mounting ring (MR) and a carrier (RC). The carrier (RC) is provided with an annular groove (2c1), the mounting ring (MR) being mounted in the annular groove (2c1). Mounting ring limiting teeth (12) and carrier limiting teeth (22) overlap in an axial direction (A), thus axially limiting the mounting ring (MR). The carrier (RC) is further provided with notches (2n), the mounting ring limiting teeth (12) passing through the notches (2n) during the movement of the mounting ring (MR) in the axial direction (A) to the annular groove (2c1). The mounting ring (MR) is provided with elastic pieces, and the carrier (RC) is provided with corresponding limiting slots (2c2), the elastic pieces extending into the limiting slots (2c2), thus circumferentially limiting the mounting ring (MR) in a circumferential direction (C) of the mounting ring (MR). In this way, the assembly of the mounting ring and the carrier is stable, and the structure of the ring assembly itself is simple, enabling the manufacturing process to be simplified. Further provided is a vehicle powertrain which comprises the ring assembly.

Description

Ring assembly, assembly method thereof, and vehicle power system Technical Field

[0001] The present application relates to the structure of a vehicle power system, and in particular to a ring assembly, an assembly method thereof, and a vehicle power system including the ring assembly. Background Art

[0002] In today's hybrid systems, such as those with a P1 architecture, precise motor control requires constant sensing of the motor's rotor position and rotational speed. Therefore, eddy current sensors are needed to detect these rotor parameters. Typically, the sensing element of an eddy current sensor is mounted on the rotor support of the motor, rotating with it. The fixed portion of the eddy current sensor is fixed to the housing and does not rotate.

[0003] Existing solutions for mounting the sensing target of an eddy current sensor on the rotor bracket of a motor rotor typically require an interference fit between the sensing target and the rotor bracket, and also require a retaining ring to axially limit the sensing target. Consequently, the sensing target and / or the rotor bracket have complex machined shapes and numerous associated components, making both the manufacturing and assembly processes complex and leading to high costs.

[0004] Summary of the Invention

[0005] This application addresses the shortcomings of the aforementioned prior art. One objective of this application is to provide a ring assembly and an assembly method thereof. The ring assembly has a relatively simple structure and allows the mounting ring to be installed in the ring groove of a bearing member using a relatively simple assembly method. Another objective of this application is to provide a vehicle power system including the aforementioned ring assembly.

[0006] In order to achieve the above-mentioned purpose of the invention, the present application may adopt the following technical solutions.

[0007] The present application provides a ring assembly as follows, comprising a mounting ring and a bearing member assembled together, wherein the bearing member is formed with an annular groove having a radial opening, and the mounting ring is mounted in the annular groove.

[0008] The mounting ring is formed with a mounting ring limiting tooth, and the carrier is formed with a carrier limiting tooth. Along the axial direction of the mounting ring, the mounting ring limiting tooth and the carrier limiting tooth at least partially overlap to axially limit the mounting ring, and the carrier further forms a notch. During the installation process of the mounting ring moving along the axial direction to the annular groove, the mounting ring limiting tooth passes through the notch, and

[0009] The mounting ring is formed with at least one spring piece, and the supporting member is formed with at least one limiting groove on the first axial side wall or the second axial side wall of the ring groove, which is recessed toward one axial side of the supporting member or recessed toward the other axial side of the supporting member. The spring piece extends into the limiting groove to circumferentially limit the mounting ring in the circumferential direction of the mounting ring.

[0010] In an optional solution, the mounting ring includes a plurality of first elastic pieces formed on the mounting ring limiting teeth, and the first elastic pieces abut against the second axial side wall, so that the first elastic pieces are elastically deformed and generate an axial pre-tightening force.

[0011] In another optional solution, the mounting ring is further formed with a second elastic piece serving as the at least one elastic piece, and the second elastic piece abuts against the side wall of the limiting groove on one axial side, so that the second elastic piece is elastically deformed and generates an axial preload force.

[0012] In another optional scheme, the mounting ring also includes an annular body, the mounting ring limiting teeth are formed on the annular body, the second spring piece is arranged at a position of the annular body avoiding the mounting ring limiting teeth, and the at least one limiting groove is formed on the first axial side wall of the annular groove at the notch.

[0013] In another optional scheme, at least in the natural state, the free end of the second spring piece away from the annular body is configured to tilt toward one axial side relative to the annular body, and the free end of the first spring piece away from the annular body is configured to tilt toward the other axial side relative to the annular body.

[0014] In another optional solution, the plurality of mounting ring limiting teeth are evenly distributed along the circumference and spaced apart, the plurality of carrier limiting teeth are evenly distributed along the circumference and spaced apart, and the carrier forms the gap between adjacent carrier limiting teeth.

[0015] In another optional scheme, the supporting member is formed with a mounting hole for the mounting ring to move along the axial direction to the annular groove, and the annular groove has a radial opening facing radially inward and open toward the mounting hole. In the cross-section taken along the axial direction and any radial direction of the mounting ring, the shape of the annular groove is n-shaped, and in the cross-section, the bottom wall of the annular groove extends in a straight line or in a circular arc along the axial direction.

[0016] The present application also provides a method for assembling the ring assembly described in any one of the above technical solutions, comprising:

[0017] an aligning step, wherein the mounting ring limiting teeth of the mounting ring are aligned with the notch of the carrier in the axial direction of the mounting ring, and the mounting ring is moved along the axial direction to the position where the annular groove of the carrier is located; and

[0018] A rotation step, wherein the mounting ring is rotated relative to the carrier in the circumferential direction of the mounting ring so that the spring sheet extends into the limiting groove and the mounting ring limiting teeth and the carrier limiting teeth of the carrier at least partially overlap along the axial direction.

[0019] The present application also provides a vehicle power system as follows, comprising the ring assembly described in any one of the above technical solutions.

[0020] In an optional solution, the mounting ring of the ring assembly is a sensing target of an eddy current sensor, and the bearing member is a rotor bracket of a motor.

[0021] By adopting the above technical solution, the present application provides a ring assembly comprising an assembled mounting ring and a carrier, wherein the mounting ring is mounted in a radially opening annular groove of the carrier. In one aspect, the mounting ring is formed with mounting ring limiting teeth, and the carrier is formed with carrier limiting teeth. The mounting ring limiting teeth and the carrier limiting teeth at least partially overlap in the axial direction of the mounting ring (in other words, when viewed in the axial direction of the mounting ring, the mounting ring limiting teeth and the carrier limiting teeth are mutually obstructed), thereby axially limiting the mounting ring by the annular groove. In another aspect, the mounting ring is formed with at least one spring plate, and the carrier is formed with at least one limiting groove on a first axial sidewall or a second axial sidewall of the annular groove, the limiting groove being recessed toward one axial side of the carrier or toward the other axial side of the carrier. The spring plate extends into the limiting groove to circumferentially limit the mounting ring. Furthermore, the carrier is formed with a notch, through which the mounting ring limiting teeth pass during the axial movement of the mounting ring into the annular groove for installation. In this way, by arranging the mounting ring limiting teeth and the supporting member limiting teeth in an overlapping axial direction, the mounting ring can be axially limited to prevent it from falling out, and by extending the spring piece into the limiting groove, the mounting ring can be circumferentially limited. Thus, the mounting ring is limited in both the axial and circumferential directions, thereby achieving stable assembly of the mounting ring and the supporting member. Furthermore, the ring assembly itself has a simple structure, simplifying the manufacturing process. Furthermore, the ring assembly of the present application omits the retaining ring, thereby reducing the number of components required for limiting, reducing the complexity of the ring assembly's manufacturing and assembly processes, and thus reducing the corresponding costs. The present application also provides a vehicle power system including the above-mentioned ring assembly, which has the same beneficial effects.

[0022] By adopting the above technical solution, the present application provides an assembly method for the above ring assembly, which includes an alignment step and a rotation step. In the alignment step, the mounting ring limiting teeth of the mounting ring are aligned with the notch of the carrier in the axial direction of the mounting ring, and in this state, the mounting ring is moved axially to the position where the ring groove of the carrier is located. In the rotation step, the mounting ring is rotated relative to the carrier in the circumferential direction of the mounting ring so that the spring sheet extends into the limiting groove and the mounting ring limiting teeth and the carrier limiting teeth of the carrier at least partially overlap along the axial direction. It can be understood that, if necessary, pressure can be applied in the rotation step to prevent the outer periphery of the mounting ring from interfering with the carrier during the rotation process. In this way, by sequentially performing the above steps, the assembly of the ring assembly can be achieved in a relatively simple assembly method. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1A is a schematic cross-sectional view showing a vehicle power system according to an embodiment of the present application, in which hatching is omitted.

[0024] FIG. 1B is an enlarged schematic diagram showing the structure in region S1 in FIG. 1A .

[0025] FIG. 2A is a front schematic view showing a mounting ring of the ring assembly of the vehicle power system in FIG. 1A .

[0026] FIG. 2B is an enlarged schematic diagram showing the structure in region S2 in FIG. 2A .

[0027] FIG. 2C is an enlarged schematic diagram showing the structure in region S3 in FIG. 2A .

[0028] FIG. 3A is a perspective schematic diagram showing a partial structure of a carrier of a ring assembly of the vehicle power system in FIG. 1A .

[0029] FIG. 3B is a schematic cross-sectional view showing a partial structure of the carrier in FIG. 3A , in which hatching is omitted.

[0030] Figures 4A to 4I are schematic diagrams for illustrating the assembly method of the ring assembly of the vehicle power system in Figure 1A, wherein Figures 4B and 4C are respectively a schematic cross-sectional view in the M1-M1 direction and a schematic cross-sectional view in the N1-N1 direction in Figure 4A, Figures 4E and 4F are respectively a schematic cross-sectional view in the M2-M2 direction and a schematic cross-sectional view in the N2-N2 direction in Figure 4D, and the dotted lines in the figures correspond to the states of the spring pieces in Figures 4B and 4C, respectively, and Figures 4H and 4I are respectively a schematic cross-sectional view in the M3-M3 direction and a schematic cross-sectional view in the N3-N3 direction in Figure 4G.

[0031] Description of Reference Numerals

[0032] SH1 input shaft; SH2 first output shaft; SH3 second output shaft; CL dual clutch; RO motor rotor;

[0033] MR mounting ring; 11 annular body; 12 mounting ring limiting teeth; 13 first spring piece; 14 second spring piece;

[0034] RC bearing member; 21 base; 22 bearing member limiting tooth; 2c1 annular groove; 2w1 first axial side wall; 2w2 second axial side wall; 2c2 limiting groove; 2h mounting hole; 2n notch;

[0035] A is axial; R is radial; C is circumferential. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0037] It should be noted that, unless otherwise specified, in this application, "axial," "radial," and "circumferential" refer to the axial, radial, and circumferential directions of the mounting ring of the ring assembly, respectively. Furthermore, in Figures 1B and 3B, "one axial side" refers to the left side in the figures, and "the other axial side" refers to the right side in the figures.

[0038] In this application, "transmission connection" refers to a connection between two components that can transmit torque, including direct connection and indirect connection.

[0039] A vehicle power system according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0040] As shown in FIG. 1A and FIG. 1B , a vehicle power system according to an embodiment of the present application includes a motor, a dual clutch CL, an input shaft SH1 , a first output shaft SH2 , a second output shaft SH3 , and a mounting ring MR that are assembled together.

[0041] As shown in Figure 1A , the motor includes a stator, a rotor (RO), and a rotor support. An air gap exists between the rotor (RO) and the stator, allowing the rotor (RO) to rotate relative to the stator. The rotor support is fixed to the rotor (RO) and serves as the bearing (RC) for the ring assembly. The rotor support is directly drive-coupled to the input shaft (SH1).

[0042] As shown in FIG1A , the dual clutch CL is a friction clutch comprising two independently operable clutch units, wherein the input shaft SH1 and the two output shafts SH2 and SH3 can be selectively coupled in transmission by engaging and disengaging the two clutch units.

[0043] As shown in Figure 1A , the input shaft SH1 is connected to the engine, allowing the torque from the engine to be transmitted to the vehicle power system via the input shaft SH1. The first output shaft SH2 is provided with an internal spline for connecting to one input shaft of the transmission via a spline mechanism. The second output shaft SH3 is provided with an internal spline for connecting to the other input shaft of the transmission via a spline mechanism.

[0044] As shown in Figures 1A and 1B , the eddy current sensor's sensing target is the mounting ring MR of the ring assembly, which is installed in the annular groove 2c1 of the carrier RC. The mounting ring MR is constrained relative to the carrier RC in the axial direction A, radial direction R, and circumferential direction C. This allows the mounting ring MR and the carrier RC to rotate with the motor rotor RO. The fixed portion of the eddy current sensor, in conjunction with the mounting ring MR, can sense the position and rotational speed of the motor rotor RO.

[0045] The ring assembly in the power system for a vehicle will be described below.

[0046] As shown in Figures 1A and 1B, the ring assembly according to the present application comprises a mounting ring MR and a carrier RC, which are assembled together. In this embodiment, the mounting ring MR serves as the sensing target of the eddy current sensor, and the carrier RC serves as the rotor support. The carrier RC is formed with a bottomed annular groove 2c1 having a radial opening, into which the mounting ring MR is mounted.

[0047] In this embodiment, as shown in Figures 1A and 1B and Figures 2A to 2C, the mounting ring MR includes an annular body 11, a mounting ring limiting tooth 12, a first elastic piece 13, and a second elastic piece 14 that are formed into an integral body. The annular body 11 extends continuously along the entire circumference. A plurality of mounting ring limiting teeth 12 (six in this embodiment) are formed on the outer periphery of the annular body 11. These mounting ring limiting teeth 12 are evenly distributed along the circumference, so that the central angle formed by the circumferential center lines of adjacent mounting ring limiting teeth 12 is 60 degrees. Each mounting ring limiting tooth 12 protrudes radially outward relative to the other parts of the annular body 11. The first elastic piece 13 is provided at the portion of the annular body 11 where the mounting ring limiting teeth 12 are formed. Each mounting ring limiting tooth 12 is formed with a first elastic piece 13, and the first elastic piece 13 is located at the circumferential center portion of the corresponding mounting ring limiting tooth 12. When the first spring leaf 13 is in its natural state, the free end of the first spring leaf 13, away from the annular body 11, is configured to tilt away from the first axial sidewall 2w1, that is, toward the second axial sidewall 2w2 (toward the other axial side). When the mounting ring MR is installed in place, the first spring leaf 13 abuts the second axial sidewall 2w2 of the annular groove 2c1 of the bearing component RC, causing the first spring leaf 13 to elastically deform and generate an axial preload. The second spring leaf 14 is disposed in a portion of the annular body 11 that avoids the mounting ring limit teeth 12. A second spring leaf 14 is formed between each two adjacent mounting ring limit teeth 12, and the second spring leaf 14 is located in the circumferential center portion of the portion between the adjacent mounting ring limit teeth 12. The central angle formed by the circumferential centerlines of adjacent first and second spring leaves 13, 14 is 30 degrees. When the second spring piece 14 is in a natural state, the free end of the second spring piece 14 away from the annular body 11 is constructed to tilt toward the first axial side wall 2w1 (toward one axial side); when the mounting ring MR is installed in place, the second spring piece 14 extends into the limiting groove 2c2 and is in a natural state to limit the mounting ring MR in the circumferential direction C, thereby preventing the mounting ring MR and the carrier RC from rotating relative to each other in the circumferential direction C.

[0048] In this embodiment, as shown in Figures 1A and 1B and Figures 3A and 3B, the carrier RC includes a base 21. The base 21 can be formed into various shapes as needed, typically a cylindrical shape. The base 21 defines a mounting hole 2h for the mounting ring MR to move along the axial direction A into the annular groove 2c1. The central axis of the mounting hole 2h is aligned with the central axis of the annular groove 2c1. An annular groove 2c1 is formed on the peripheral wall of the mounting hole 2h near the opening of the mounting hole 2h and extends along the entire circumference in the circumferential direction C. The annular groove 2c1 has an opening that faces radially inward and toward the mounting hole 2h. The bottom wall of the annular groove 2c1 serves as the radially outer sidewall of the annular groove 2c1. In cross-sections taken along the axial direction A and any radial direction R, the annular groove 2c1 can be shaped like an n-shape. That is, in these cross-sections, the bottom wall of the annular groove 2c1 extends linearly or in an arcuate manner along the axial direction A, with a smooth transition. A first axial sidewall 2w1 of the annular groove 2c1, located on one axial side, extends linearly along the radial direction R, while a second axial sidewall 2w2 of the annular groove 2c1, located on the other axial side, also extends linearly along the radial direction R. Furthermore, near the opening of the mounting hole 2h, the base 21 is formed with carrier-limiting teeth 22. Multiple carrier-limiting teeth 22 are evenly spaced and distributed along the circumferential direction. When the mounting ring MR is installed, as viewed along the axial direction A, the mounting ring-limiting teeth 12 and the carrier-limiting teeth 22 at least partially overlap, thereby axially limiting the mounting ring MR and preventing it from unintentionally dislodging from the opening of the mounting hole 2h along the axial direction A. Furthermore, the base 21 forms a limiting groove 2c2 on the first axial sidewall 2w1 of the annular groove 2c1. When the mounting ring MR is installed in place, the second spring 14 extends into the limiting groove 2c2 to limit the mounting ring MR in the circumferential direction C, thereby preventing the mounting ring MR and the carrier RC from rotating relative to each other in the circumferential direction C. In addition, since the mounting ring MR needs to be installed into the annular groove 2c1 through the opening of the mounting hole 2h, the mounting ring MR will move along the axial direction A to the position of the annular groove 2c1. To facilitate the movement of the mounting ring MR along the axial direction A, the carrier RC forms notches 2n between adjacent carrier limiting teeth 22. The size of these notches 2n can be slightly larger than the mounting ring limiting teeth 12. These notches are used for the mounting ring limiting teeth 12 to pass through during the axial movement of the mounting ring MR into the annular groove 2c1, thereby preventing the mounting ring limiting teeth 12 from interfering with other parts of the carrier RC. The notch 2n can be formed by omitting a portion of the other axial side wall 2w2 of the annular groove 2c1. The outer peripheral wall of the notch 2n is aligned with the outer peripheral wall (bottom wall) of the annular groove 2c1, so that the annular groove 2c1 actually completely omits the other axial side wall 2w2 at the position where the notch 2n is located and only has one axial side wall 2w1.

[0049] Thus, by adopting the above solution, the annular groove 2c1 can be loosely fitted with the mounting ring MR, ensuring that the mounting ring MR can be moved axially A through the mounting hole 2h to the position of the annular groove 2c1 and that the mounting ring MR can rotate smoothly within the annular groove 2c1 during installation. Furthermore, after the mounting ring MR is installed, the bottom wall of the annular groove 2c1 and the annular shape of the mounting ring MR itself can radially limit the mounting ring MR. Furthermore, the axially overlapping arrangement of the mounting ring limiting teeth 12 and the carrier limiting teeth 22 prevents the mounting ring MR from axially dislodging. The circumferential position of the mounting ring MR is achieved by extending the second spring plate 14 into the limiting groove 2c2. Furthermore, the first spring plate 13 generates an axial preload, ensuring a secure and stable structure when the mounting ring MR and the carrier RC are assembled. Thus, the mounting ring MR is positionally limited in the radial direction R, axial direction A, and circumferential direction C, while the ring assembly itself is structurally simple and the manufacturing process is simplified. Furthermore, the ring assembly of the present application effectively constitutes a self-securing structure, thus eliminating the need for a retaining ring compared to the prior art. This reduces the number of components required for position retention, reduces the complexity of the ring assembly's processing and assembly, and thus reduces the corresponding cost. Furthermore, in the vehicle power system according to an embodiment of the present application, during transportation and storage, the actuating piston in the clutch unit of the dual clutch CL can abut against the mounting ring MR and be retained in position, thereby facilitating the transportation and storage of the vehicle power system.

[0050] The following describes the assembly method of the ring assembly according to the present application in conjunction with the accompanying drawings.

[0051] The assembling method of the ring assembly according to the present application includes an alignment step and a rotation step performed sequentially, through which the mounting ring MR can be smoothly installed in the ring groove 2c1.

[0052] As shown in Figures 4A to 4C , during the alignment step, the mounting ring MR is placed at the opening of the mounting hole 2h of the carrier RC, so that the mounting ring stop teeth 12 of the mounting ring MR are aligned with the notches 2n of the carrier RC in the axial direction A. In this state, the mounting ring MR is inserted into the mounting hole 2h along the axial direction A and moved to the position where the annular groove 2c1 of the carrier RC is located.

[0053] As shown in Figures 4D to 4G , during the rotation step, the mounting ring MR is rotated circumferentially relative to the carrier RC, such that the second elastic piece 14 extends into the limiting groove 2c2 and the mounting ring limiting teeth 12 and the carrier limiting teeth 22 of the carrier RC at least partially overlap when viewed along the axial direction A. The first elastic piece 13 abuts against the second axial sidewall 2w2 to be elastically deformed, thereby generating an axial preload force on the first elastic piece 13. Furthermore, during this step, since the mounting ring MR may interfere with the carrier RC during rotation relative to the carrier RC when the mounting ring limiting teeth 12 and the carrier limiting teeth 22 are in their natural state, axial pressure may be applied to the mounting ring MR before rotation, as shown in Figures 4D to 4F , to elastically deform the free ends of the first and second elastic pieces 13 and 14 until they are substantially flush with the annular body 11. This avoids the interference described above.

[0054] The present application is not limited to the solutions described in the above embodiments, and those skilled in the art can make various modifications to the above embodiments of the present application under the guidance of the present application without departing from the scope of the present application. The following is a supplementary explanation of the technical solution of the present application.

[0055] i. While the above embodiments illustrate the ring assembly of this application as being used in a vehicle power system, this application is not limited thereto. The ring assembly of this application can also be appropriately employed in other applications requiring the mating of a mounting ring and a ring groove. Furthermore, the mounting ring is not limited to the sensing target of the eddy current sensor described above; it can also be other annular objects.

[0056] Furthermore, in the above embodiment, the annular groove 2c1 of the carrier RC in the ring assembly of the present application is described as having a radial opening that opens radially inward, but the present application is not limited thereto. In other application scenarios, the annular groove 2c1 of the ring assembly of the present application may have a radial opening that opens radially outward. In this case, the mounting ring can be sleeved onto the carrier from the radial outside, and features such as the first spring plate and the second spring element of the mounting ring can be formed on the inner circumference of the mounting ring.

[0057] ii. In the above embodiment, the mounting ring MR of the ring assembly of the present application is described as having two spring plates 13 and 14, but the present application is not limited thereto. In an alternative embodiment, the ring assembly may include only the first spring plate 13 and omit the second spring plate 14. The first spring plate 13 and the corresponding retaining grooves provided on the retaining teeth of the carrier member provide circumferential limiting of the mounting ring MR and provide axial preload.

[0058] In addition, the above embodiment illustrates that when the mounting ring MR of the ring assembly of the present application is in place, the second elastic leaf 14 does not abut against the first axial sidewall 2w1 and is in a natural state, but the present application is not limited thereto. In an alternative embodiment, when the mounting ring MR is in place, the second elastic leaf 14 not only extends into the retaining groove 2c2 but also abuts against the first axial sidewall 2w1 of the annular groove 2c1 of the carrier RC. This allows the second elastic leaf 14 to elastically deform and generate an axial preload while preventing relative rotation of the mounting ring MR and the carrier RC in the circumferential direction C. In this way, both the first elastic leaf 13 and the second elastic leaf 14 can generate an axial preload, making the assembled mounting ring MR and the carrier RC more secure and stable.

[0059] iii. In the above embodiment, the first elastic piece 13 is disposed at a portion of the annular body 11 where the mounting ring limiting teeth 12 are formed, and the second elastic piece 14 is disposed at a portion of the annular body 11 that avoids the mounting ring limiting teeth 12. However, the present application is not limited thereto. One of the first elastic piece 13 and the second elastic piece 14 may be disposed at a portion of the annular body 11 where the mounting ring limiting teeth 12 are formed, and the other of the first elastic piece 13 and the second elastic piece 14 may be disposed at a portion of the annular body 11 that avoids the mounting ring limiting teeth 12.

Claims

1. A ring assembly, comprising a mounting ring (MR) and a carrier (RC) assembled together, wherein the carrier (RC) is formed with a ring groove (2c1) having a radial opening, and the mounting ring (MR) is mounted in the ring groove (2c1), characterized in that, the mounting ring (MR) is formed with mounting ring limiting teeth (12), the carrier (RC) is formed with carrier limiting teeth (22), and along the axial direction (A) of the mounting ring (MR), the mounting ring limiting teeth (12) and the carrier limiting teeth (22) at least partially overlap to axially limit the mounting ring (MR), and the carrier (RC) is further formed with a notch (2n), during the installation process of the mounting ring (MR) moving along the axial direction (A) into the ring groove (2c1), the mounting ring limiting teeth (12) pass through the notch (2n), and the mounting ring (MR) is formed with at least one elastic piece, and the carrier (RC) is formed with at least one limiting groove (2c2) recessed towards one axial side of the carrier (RC) or towards the other axial side of the carrier (RC) on the first axial side wall (2w1) or the second axial side wall (2w2) of the ring groove (2c1), and the elastic piece extends into the limiting groove (2c2) to circumferentially limit the mounting ring (MR) in the circumferential direction (C) of the mounting ring (MR).

2. The ring assembly according to claim 1, wherein, The mounting ring (MR) includes a plurality of first elastic pieces (13) formed on the mounting ring limiting teeth (12), and the first elastic pieces (13) abut against the second axial side wall (2w2) such that the first elastic pieces (13) are elastically deformed to generate an axial pre-tightening force.

3. The annular component according to claim 2, wherein The mounting ring (MR) is further formed with a second elastic piece (14) as the at least one elastic piece, and the second elastic piece (14) abuts against the side wall on the axial one side of the limiting groove (2c2) such that the second elastic piece (14) is elastically deformed to generate an axial pre-tightening force.

4. The ring assembly according to claim 3, wherein, The mounting ring (MR) further includes an annular main body (11), the mounting ring limiting teeth (12) are formed on the annular main body (11), the second elastic piece (14) is disposed at a portion of the annular main body (11) avoiding the mounting ring limiting teeth (12), and the at least one limiting groove (2c2) is formed on the first axial side wall (2w1) of the ring groove (2c1) at the notch.

5. The ring assembly according to claim 4, characterized in that, At least in the natural state, the free end of the second elastic piece (14) away from the annular main body (11) is configured to tilt towards the axial one side relative to the annular main body (11), and the free end of the first elastic piece (13) away from the annular main body (11) is configured to tilt towards the axial other side relative to the annular main body (11).

6. The ring assembly according to any one of claims 1 to 5, characterized in that, a plurality of the mounting ring limiting teeth (12) are evenly distributed at intervals along the circumferential direction (C). A plurality of the carrier limiting teeth (22) are uniformly distributed at intervals along the circumferential direction (C), and the carrier (RC) forms the notch (2n) between adjacent carrier limiting teeth (22).

7. The ring assembly according to any one of claims 1 to 5, characterized in that The carrier (RC) is formed with a mounting hole (2h) for the mounting ring (MR) to move along the axial direction (A) into the ring groove (2c1), and the ring groove (2c1) has a radial opening facing radially inward and opening towards the mounting hole (2h). In a cross-section taken along the axial direction (A) and any radial direction (R) of the mounting ring (MR), the shape of the ring groove (2c1) is an n-shape, and the bottom wall of the ring groove (2c1) extends linearly or arc-shapedly along the axial direction (A) in the cross-section.

8. A method for assembling the ring component according to any one of claims 1 to 7, characterized in that, Comprising: An alignment step, in which the mounting ring limiting teeth (12) of the mounting ring (MR) are aligned with the notch (2n) of the carrier (RC) in the axial direction (A) of the mounting ring (MR), and the mounting ring (MR) is moved along the axial direction (A) to the position where the ring groove (2c1) of the carrier (RC) is located; and A rotation step, in which the mounting ring (MR) is rotated relative to the carrier (RC) in the circumferential direction (C) of the mounting ring (MR) so that the elastic piece extends into the limiting groove (2c2), and at least part of the mounting ring limiting teeth (12) and the carrier limiting teeth (22) of the carrier (RC) overlap along the axial direction (A). Comprising the ring assembly according to any one of claims 1 to 7.

9. A power system for a vehicle, characterized in that, The mounting ring (MR) of the ring assembly is a sensing target of an eddy current sensor, and the carrier (RC) is a rotor bracket of a motor.

10. The vehicle power system according to claim 9, characterized in that, ​

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