Retaining ring piece, bearing matching assembly, steering mechanism and vehicle

By using a retaining ring component to connect the bearing in the automotive power steering system, the problems of poor bearing positioning accuracy and high cost are solved, achieving the effects of simple structure, high positioning accuracy and reduced noise.

CN223676733UActive Publication Date: 2025-12-16BYD CO LTD +1
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Patent Information

Application Number
CN202520171620.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-12-16
Estimated Expiration
2035-01-23

AI Technical Summary

Technical Problem

In existing automotive power steering systems, the bearings and structures are complex, the positioning accuracy is poor, the space occupied is large and the cost is high, resulting in obvious gear meshing backlash noise during alternating steering.

Method used

When a retaining ring is used in conjunction with a bearing, the mating part and the mounting part are connected by a connecting part to achieve the swing support of the bearing. This method has a simple structure, improves positioning accuracy, and reduces costs.

Benefits of technology

By using the retaining ring component in conjunction with the bearing, the bearing's swing support is achieved, which improves positioning accuracy, reduces costs, and minimizes noise interference.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a check ring piece, a bearing matching assembly, a steering mechanism and a vehicle, the check ring piece comprises a mounting part and a matching part, the matching part is suitable for being matched with a bearing, and the matching part is connected with the mounting part through a connecting part. According to the check ring piece, the matching part and the mounting part are connected through the connecting part, when the check ring piece is matched with the bearing, swing supporting of the bearing can be achieved, the structure is simple, the positioning accuracy of the bearing is improved, and cost is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle parts technical field especially is a kind of retaining ring, bearing cooperation subassembly, steering mechanism and vehicle. BACKGROUND

[0002] In the usual car installation power steering system, it produces auxiliary torque when steering and thus reduces the steering torque applied to the steering column by the driver. There is a certain gear meshing gap in the steering mechanism, which is due to the tolerance of each component, the different thermal expansion of each transmission element and due to wear. Especially in so-called alternate steering, that is, in direct succession including alternate steering angle steering, there is a gear meshing gap between the alternate tightness of each opposite tooth side of pinion and gear teeth, which produces noise.

[0003] In the related art, the bearing is turned within a certain range to eliminate noise, but the bearing and the corresponding structure are relatively complex, the positioning accuracy of the bearing is poor, the space occupied is more, and the cost is also high. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a retaining ring, the connecting portion is connected between the matching portion and the mounting portion, the swinging support of the bearing can be realized when the retaining ring is matched with the bearing, the structure is simple, the positioning accuracy of the bearing is improved, and the cost is reduced.

[0005] The utility model further provides a bearing cooperation subassembly.

[0006] The utility model further provides a steering mechanism.

[0007] The utility model further provides a vehicle.

[0008] According to the retaining ring of the first aspect embodiment of the utility model, the connecting portion is connected between the matching portion and the mounting portion, the swinging support of the bearing can be realized when the retaining ring is matched with the bearing, the structure is simple, the positioning accuracy of the bearing is improved, and the cost is reduced.

[0009] According to the retaining ring of the first aspect embodiment of the utility model, the connecting portion is connected between the matching portion and the mounting portion, the swinging support of the bearing can be realized when the retaining ring is matched with the bearing, the structure is simple, the positioning accuracy of the bearing is improved, and the cost is reduced.

[0010] According to some embodiments of the utility model, the projection of the matching portion on the plane perpendicular to the axial direction of the retaining ring is a first circular arc, and the central angle corresponding to the first circular arc is greater than 180 degrees.

[0011] According to some embodiments of the present application, the connecting part is at least two, and the at least two connecting parts are arranged at intervals around the outer periphery of the fitting part; or the connecting part is one, and the connecting part is connected between the midpoint of the fitting part and the mounting part.

[0012] According to some embodiments of the present application, the fitting part is integrally formed with the mounting part and the connecting part.

[0013] According to some embodiments of the present application, the fitting part is an elastic structure; and / or, the mounting part is an elastic structure.

[0014] According to some embodiments of the present application, the projection of the mounting part on the plane perpendicular to the axial direction of the retaining ring part is a circular ring.

[0015] According to some embodiments of the present application, the projection of the mounting part on the plane perpendicular to the axial direction of the retaining ring part is a second circular arc.

[0016] According to some embodiments of the present application, the central angle corresponding to the second circular arc is greater than 180°; and / or, the central angle corresponding to the second circular arc is greater than the central angle corresponding to the first circular arc.

[0017] According to some embodiments of the present application, the second circular arc and the first circular arc are concentrically arranged, and the radius of the second circular arc is greater than the first circular arc.

[0018] According to some embodiments of the present application, one end of the fitting part and one end of the mounting part are connected through one of the connecting parts, and the other end of the fitting part and the other end of the mounting part are connected through another connecting part.

[0019] According to some embodiments of the present application, the two ends of the fitting part are provided with first protrusions, and the first protrusions are located on the outside of the fitting part.

[0020] According to some embodiments of the present application, the two ends of the fitting part are provided with guide inclined surfaces towards one side of the center of the fitting part.

[0021] According to the bearing fitting assembly of the second aspect of the present application, the bearing is provided with a mounting groove on the outer periphery, and the fitting part is clamped with the mounting groove.

[0022] According to the bearing fitting assembly of the present application, the bearing is connected with the fitting part, the mounting part is used to realize the mounting of the bearing, the fitting part and the mounting part are connected through the connecting part to realize the swing support of the bearing, the structure is simple, the positioning accuracy of the bearing is improved, and the cost is reduced.

[0023] According to the second aspect of the utility model, the steering mechanism comprises a shell, a bearing cooperation assembly is arranged in the shell, a gear shaft is arranged in the shell and supported in the bearing.

[0024] According to some embodiments of the utility model, the mounting portion is used for being connected with the shell, a second protrusion is arranged on the mounting portion, a positioning groove is arranged on the shell, and the second protrusion is matched with the positioning groove.

[0025] According to the third aspect of the utility model, the vehicle comprises the steering mechanism.

[0026] The additional aspects and advantages of the utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure One ;

[0029] Figure 2 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Two ;

[0030] Figure 3 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Three ;

[0031] Figure 4 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Four ;

[0032] Figure 5 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Five ;

[0033] Figure 6 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Six ;

[0034] Figure 7 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Seven ;

[0035] Figure 8 is a structure diagram of a retaining ring piece according to an embodiment of the utility model Figure Eight ;

[0036] Figure 9 is a structural diagram of a retaining ring piece according to an embodiment of the present application Figure Nine ;

[0037] Figure 10 is a structural diagram of a retaining ring piece according to an embodiment of the present application Figure Ten ;

[0038] Figure 11 is a structural diagram of a bearing matching mechanism according to an embodiment of the present application Figure One ;

[0039] Figure 12 is a structural diagram of a bearing matching mechanism according to an embodiment of the present application Figure Two ;

[0040] Figure 13 is a structural diagram of a bearing matching mechanism according to an embodiment of the present application Figure Three ;

[0041] Figure 14 is a structural diagram of a bearing matching mechanism according to an embodiment of the present application Figure Four ;

[0042] Figure 15 is a structural diagram of a bearing matching mechanism and a gear shaft according to an embodiment of the present application;

[0043] Figure 16 is a structural diagram of a bearing matching mechanism and a gear shaft, and a housing according to an embodiment of the present application.

[0044] Reference signs:

[0045] 10, bearing matching assembly; 11, bearing; 111, mounting groove; 12, retaining ring piece; 121, matching part; 122, mounting part; 123, connecting part; 124, guide inclined surface; 125, second protrusion; 126, first protrusion;

[0046] 20, housing;

[0047] 30, gear shaft. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and the embodiments described with reference to the drawings are exemplary, and the embodiments of the present application are described in detail below.

[0049] The embodiments of the present application are described below with reference to Figures 1-16 The bearing matching assembly 10 according to an embodiment of the present application is described below, and a steering mechanism comprising the above-mentioned bearing matching assembly 10 is also proposed, and a vehicle comprising the above-mentioned steering mechanism is proposed.

[0050] Combination Figures 1-10 As shown, the retaining ring 12 comprises a mounting portion 122 and a fitting portion 121, the fitting portion 121 and the mounting portion 122 are connected through a connecting portion 123. That is, the mounting portion 122 and the fitting portion 121 are arranged at intervals, and the mounting portion 122 and the fitting portion 121 are connected through the connecting portion 123, the fitting portion 121 is adapted to cooperate with the bearing, and the mounting portion 122 is used to cooperate with other mounting structure to realize the mounting of the bearing.

[0051] The fitting portion 121 can be an open circular arc structure, and the mounting portion 122 can be an open circular arc structure or a circular ring structure. The inner circumferential side of the fitting portion 121 is a circular arc line, the inner circumferential side of the mounting portion 122 is a circle or a circular arc line, and the center of the circular arc line of the fitting portion 121 is the same as the center of the circle or the circular arc line of the mounting portion 122.

[0052] Therefore, the fitting portion 121 is used to cooperate with the bearing, and the fitting portion 121 and the mounting portion 122 are connected through the connecting portion 123, so that the axis of the bearing can swing within a certain range, realizing the swing support of the bearing, and the structure is simple, the positioning accuracy of the bearing is improved, and the cost is reduced.

[0053] In addition, the retaining ring 12 can be made of spring steel, so that the retaining ring 12 has a certain elastic deformation capacity.

[0054] The projection of the fitting portion 121 on the plane perpendicular to the axial direction of the retaining ring 12 is a first circular arc. That is, the fitting portion 121 is not a closed circular ring structure, and one side of the fitting portion 121 is provided with an opening, so that the fitting portion 121 presents an open circular arc structure, facilitating the fitting portion 121 to be sleeved on the outer circumference of the bearing, so that the fitting portion 121 is closely fitted with the bearing, realizing the cooperation and mounting of the bearing and the retaining ring 12.

[0055] Further, the central angle of the first circular arc is greater than 180°, that is, the first circular arc is a superior arc. The central angle of the opening part of the fitting portion 121 is less than 180°, which ensures the structural stability of the fitting portion 121 and the contraction performance of the fitting portion 121, avoiding the bearing from being separated from the fitting portion 121.

[0056] Combination Figures 2-10 As shown, the connecting portion 123 is at least two, and the at least two connecting portions 123 are arranged at intervals around the outer circumference of the fitting portion 121. When two connecting portions 123 are arranged, the axis of the assembled bearing will swing in the line connecting the centers of the two connecting portions 123 and through the normal plane of the axis of the bearing.

[0057] As Figure 1As shown, there is one connecting part 123, which connects the midpoint of the mating part 121 and the mounting part 122. When there is only one connecting part 123, the mating part 121 has a larger range of rotation relative to the mounting part 122, and the axis of the bearing 11 can swing in any direction around the center point of the connecting part 123.

[0058] In some embodiments, the mating part 121 is integrally formed with the mounting part 122 and the connecting part 123. That is, the retaining ring 12 is a one-piece structure, eliminating the need to assemble the mating part 121, the mounting part 122 and the connecting part 123. This improves the integrity of the retaining ring 12, ensures the connection strength of the mating part 121, the mounting part 122 and the connecting part 123, and prevents cracking when the mating part 121 mates with the bearing.

[0059] Furthermore, the mating part 121 can be an elastic structure, so that the opening of the mating part 121 can be expanded, which facilitates the mating part 121 and the bearing.

[0060] In some other embodiments, the mounting portion 122 can be an elastic structure. The mounting portion 122 cooperates with other mounting structures to realize the installation of the retaining ring 12. The mounting portion 122 is an elastic structure, which can prevent tearing due to stress at the connection between the connecting portion 123 and the mounting portion 122 when the bearing swings.

[0061] In some embodiments, such as Figures 1-6 As shown, the projection of the mounting portion 122 onto a plane perpendicular to the axial direction of the retaining ring 12 is an annulus. Setting the mounting portion 122 as a complete annulus ensures the structural strength of the mounting portion 122, guarantees the fit between the mounting portion 122 and other mounting structures, prevents loose fits between the mounting portion 122 and other mounting structures, and facilitates the manufacturing of the housing 20 that mates with the mounting portion 122.

[0062] In other embodiments, such as Figures 7-10 As shown, the projection of the mounting portion 122 onto a plane perpendicular to the axial direction of the retaining ring member 12 is a second arc. That is to say, an opening can also be provided on the mounting portion 122, and the mounting portion 122 can also adopt an open arc design, which can also achieve reliable connection between the retaining ring member 12 and other mounting structures.

[0063] When assembling the retaining ring 12, align the opening of the mating part 121 with the bearing, and forcefully squeeze the bearing and the retaining ring 12 to deform and expand the opening of the mating part 121. Continue to squeeze the bearing and the retaining ring 12 so that the bearing slides into the mating part 121 of the retaining ring 12. Finally, the bearing and the mounting part 122 of the retaining ring 12 are coaxially arranged and connected into a fixed whole.

[0064] like Figures 7-10As shown, the central angle of the second circular arc is greater than 180°, that is, the second circular arc is a superior arc. The central angle of the opening portion of the mounting portion 122 is less than 180°, which ensures the structural stability of the mounting portion 122 and the stability of the cooperation between the mounting portion 122 and other mounting structures, thereby avoiding the separation of the check ring 12 from other mounting structures.

[0065] In some embodiments, the central angle corresponding to the second circular arc is greater than the central angle corresponding to the first circular arc, which ensures the connection reliability between the mounting portion 122 and the cooperating portion 121.

[0066] In some embodiments, the second circular arc is concentrically arranged with the first circular arc, and the radius of the second circular arc is greater than that of the first circular arc. The cooperating portion 121 and the mounting portion 122 are arranged at intervals, which can make the axis of the bearing swing within a certain range, realize the swing support of the bearing, and improve the positioning accuracy of the bearing and reduce the cost.

[0067] As shown in Figure 9 and Figure 10 , one end of the cooperating portion 121 and one end of the mounting portion 122 are connected by one of the connecting portions 123, and the other end of the cooperating portion 121 and the other end of the mounting portion 122 are connected by the other connecting portion 123. That is, the connecting portion 123 can be at least two, one of which is connected between one end of the cooperating portion 121 and one end of the mounting portion 122, and the other is connected between the other end of the cooperating portion 121 and the other end of the mounting portion 122. In this way, by opening an opening on the check ring 12, the cooperating portion 121, the mounting portion 122 and the connecting portion 123 can be formed, which facilitates the process forming of the check ring 12, reduces material waste and reduces cost.

[0068] As shown in Figures 1-6 , the two ends of the cooperating portion 121 are provided with first protrusions 126, and the first protrusions 126 are located on the outside of the cooperating portion 121, that is, the first protrusions 126 are located on the side of the cooperating portion 121 away from the center of the cooperating portion 121, and the first protrusions 126 protrude towards the side away from the center of the cooperating portion 121. When the cooperating portion 121 cooperates with the bearing, the first protrusions 126 facilitate the assembly of the check ring 12 and the bearing, and when the bearing is separated from the check ring 12, the first protrusions 126 can reduce the difficulty of disassembling the check ring 12 and the bearing.

[0069] As shown in Figures 7-10 , the two ends of the cooperating portion 121 are provided with guide inclined surfaces 124 towards the center of the cooperating portion 121. Specifically, the guide inclined surfaces 124 are arranged on the outside of the two ends of the cooperating portion 121, which facilitates the expansion of the cooperating portion 121 and the assembly of the cooperating portion 121 and the bearing, reduces the assembly difficulty and improves the assembly efficiency.

[0070] Combination Figures 11-14 As shown in the figure, the bearing fitting assembly 10 comprises a bearing 11 and a retainer 12, the retainer 12 is sleeved on the outer periphery of the bearing 11 to realize the installation of the bearing 11. The fitting part 121 is matched with the bearing 11, and the mounting part 122 is used to cooperate with other mounting structures to realize the installation of the bearing 11.

[0071] The projection of the fitting part 121 on the plane perpendicular to the axial direction of the retainer 12 is a first circular arc, and the outer periphery of the bearing 11 is provided with a mounting groove 111, and the fitting part 121 is closely matched with the mounting groove 111. That is to say, the fitting part 121 is not a closed circular ring structure, and one side of the fitting part 121 is provided with an opening, so that the fitting part 121 presents an open circular arc structure, which is convenient for the fitting part 121 to be sleeved in the mounting groove 111, so that the fitting part 121 and the mounting groove 111 are matched with each other, and the installation of the bearing 11 is realized.

[0072] Further, the inner diameter of the fitting part 121 is smaller than the inner diameter of the mounting groove 111, so that when the fitting part 121 is clamped in the mounting groove 111, the fitting part 121 is interference fitted with the mounting groove 111, which ensures that the fitting part 121 is closely matched with the mounting groove 111, and avoids the bearing from falling off from the fitting part 121.

[0073] Therefore, the bearing 11 is connected with the fitting part 121, the mounting part 122 is used to realize the installation of the bearing 11, the fitting part 121 and the mounting part 122 are connected through the connecting part 123, the axis of the bearing 11 can swing within a certain range, the swing support of the bearing 11 is realized, the structure is simple, the positioning accuracy of the bearing 11 is improved, and the cost is reduced.

[0074] Assembly process:

[0075] When the bearing 11 is assembled with the retainer 12, the opening of the fitting part 121 is first expanded by using a tool, so that the fitting part 121 is partially elastically deformed to a diameter greater than or equal to the diameter of the mounting part 122 of the bearing 11; then, the bearing 11 is concentrically placed in the fitting part 121, and the mounting groove 111 is aligned with the fitting part 121 in the thickness direction of the bearing 11; finally, the tool for expanding the fitting part 121 is removed, at this time the fitting part 121 elastically contracts, the fitting part 121 will be embedded in the mounting groove 111 and tightly hold the bottom wall of the mounting groove 111, thereby the bearing 11 and the retainer 12 are relatively fixed, forming a whole.

[0076] The bearing 11 in the scheme can be designed by changing the position of the connecting part 123 between the fitting part 121 and the mounting part 122, so that the bearing 11 can only swing in a certain direction.

[0077] In some embodiments, the width of the mounting groove 111 on the bearing 11 is the same as the thickness of the fitting part 121, ensuring the contact area of the fitting part 121 and the mounting groove 111, thereby ensuring the connection reliability of the retainer 12 and the bearing 11.

[0078] In combination Figure 15 And Figure 16 As shown in the figure, the steering mechanism according to the second aspect of the present application comprises: a housing 20 and a gear shaft 30, the gear shaft 30 is located in the housing 20, and the bearing fitting assembly 10 is arranged in the housing 20, wherein the mounting part 122 can be pressed in the housing 20 by the housing 20 shoulder, nut, interference assembly ring and other parts. The gear shaft 30 is located in the housing 20 and supported in the bearing 11. One end of the gear shaft 30 is supported in the bearing 11, and the other end of the gear shaft 30 is designed to be suspended, or. The other end of the gear shaft 30 is supported in the floating bearing.

[0079] In combination Figures 1-8 As shown in the figure, the mounting part 122 is provided with a second protrusion 125, and the housing 20 is provided with a positioning groove, and the second protrusion 125 cooperates with the positioning groove. The second protrusion 125 is located on the outer periphery of the mounting part 122, and the second protrusion 125 is fitted in the positioning groove, which facilitates the installation and positioning of the mounting part 122 on the housing 20, improves the assembly efficiency, and prevents the retainer 12 from rotating in the housing 20.

[0080] The vehicle according to the third aspect of the present application comprises: a steering mechanism.

[0081] 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 limiting the present application.

[0082] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0083] 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. A retainer member, characterized by, Comprising: a fitting part (121) adapted to fit with a bearing; a mounting part (122) spaced apart from the fitting part (121), the fitting part (121) and the mounting part (122) being connected by a connecting part (123).

2. The retainer member of claim 1, wherein The projection of the fitting part (121) on a plane perpendicular to the axial direction of the retainer ring (12) is a first circular arc, and the central angle of the first circular arc is greater than 180°.

3. The retainer member of claim 1, wherein The connecting part (123) is at least two, and at least two connecting parts (123) are spaced apart around the outer periphery of the fitting part (121); Or, the connecting part (123) is one, and the connecting part (123) is connected between the midpoint of the fitting part (121) and the mounting part (122).

4. The retainer member of claim 1, wherein The fitting part (121), the mounting part (122) and the connecting part (123) are integrally formed.

5. The retainer member of claim 1, wherein The fitting part (121) is a resilient structure; and / or, The mounting part (122) is a resilient structure.

6. The retainer member of any one of claims 1-5, wherein, The projection of the mounting part (122) on a plane perpendicular to the axial direction of the retainer ring (12) is a circular ring.

7. The retainer member of claim 2 wherein, The projection of the mounting part (122) on a plane perpendicular to the axial direction of the retainer ring (12) is a second circular arc.

8. The retainer member of claim 7, wherein, The central angle of the second circular arc is greater than 180°; and / or, the central angle of the second circular arc is greater than the central angle of the first circular arc.

9. The retainer member of claim 8, wherein, The second circular arc is concentrically arranged with the first circular arc, and the radius of the second circular arc is greater than that of the first circular arc.

10. The retainer member of claim 3 wherein, One end of the fitting part (121) and one end of the mounting part (122) are connected by one of the connecting parts (123), and the other end of the fitting part (121) and the other end of the mounting part (122) are connected by the other connecting part (123).

11. The retainer member of any one of claims 1-5, wherein, Both ends of the fitting part (121) are provided with first protrusions (126), and the first protrusions (126) are located on the outer side of the fitting part (121).

12. The retainer member of any one of claims 1-5, wherein, Both ends of the fitting part (121) are provided with guide inclined surfaces (124) on the side of the center of the fitting part (121).

13. A bearing fit assembly characterized by, Comprising: a bearing (11), and an installation groove (111) is arranged on the outer periphery of the bearing (11); The retainer ring (12) of any one of claims 1-12, the fitting part (121) is clamped with the installation groove (111).

14. A steering mechanism characterised in that, Comprising: a housing (20), the bearing fitting assembly (10) of claim 13 is arranged in the housing (20); a gear shaft (30) located in the housing (20) and supported in the bearing (11).

15. The steering mechanism of claim 14, wherein, The mounting part (122) is used to connect with the housing (20), and a second protrusion (125) is arranged on the mounting part (122), and a positioning groove is arranged on the housing (20), and the second protrusion (125) is matched with the positioning groove.

16. A vehicle characterized by comprising: Comprising: The steering mechanism of claim 14 or 15.