Snap spring assembly for rotating shaft and hybrid power module
By designing the spring assembly, the stable connection between the holder and the spring and dynamic balance optimization are solved, and the stability of the spring under high-speed rotation is achieved, achieving higher centrifugal force tolerance and installation efficiency.
Patent Information
- Application Number
- CN202421827562.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Existing spring designs cannot withstand centrifugal forces in high-speed rotation applications, resulting in deformation, loosening or falling off, affecting the safety and reliability of the system.
A spring assembly is designed, including a spring and a holder, which has an annular shape and a protrusion, and the holder has an annular portion and a pin portion, which forms a stable connection through the pin portion being inserted into the spring hole, and improves dynamic balance performance by providing grooves on the holder.
It improves the stability and connection strength of the spring under high-speed rotation, prevents falling off, simplifies the installation process, and enhances the safety and operation stability of the system.
Smart Images
Figure CN223270313U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and more particularly to a retaining spring assembly for a rotating shaft and a hybrid power module. Background Art
[0002] Circlips are widely used fixing elements, which are used to be installed on, for example, rotating shafts to provide axial positioning and restrict the axial movement of other parts. With the continuous development of hybrid system technology, higher requirements are placed on circlips installed on rotating shafts that rotate at high speeds. Existing circlips usually have openings and are installed in grooves on the rotating shaft through elastic deformation. However, this design may cause some problems in high-speed rotation applications. The current circlip design may not be able to withstand the centrifugal force caused by high-speed rotation. Since the circlip includes an opening, the opening of the circlip is more susceptible to centrifugal force during high-speed rotation, causing the circlip to deform, loosen or even fall off, thereby affecting the safety and reliability of the entire system. Therefore, the existing circlip design has potential risks in such high-speed applications.
[0003] Therefore, a circlip assembly for a rotating shaft and a hybrid module that can withstand higher centrifugal forces are required. Utility Model Content
[0004] One object of the present invention is to provide a circlip assembly for a rotating shaft that can withstand higher centrifugal forces. Another object of the present invention is to provide a circlip assembly for a rotating shaft that can prevent it from falling off or shifting from the rotating shaft during use. Another object of the present invention is to provide a circlip assembly for a rotating shaft and a hybrid power module that provide excellent dynamic balancing characteristics.
[0005] One aspect of the present invention provides a retaining spring assembly for a rotating shaft, comprising: a retaining spring having a generally annular shape and including an opening, wherein the retaining spring further comprises two lugs circumferentially located on either side of the opening and two holes respectively located on the lugs and extending axially; and a retaining member comprising an annular portion having a generally annular shape and two pin portions extending axially from the annular portion, wherein the two pin portions are configured to be respectively inserted into the two holes of the retaining spring.
[0006] The two pins of the retaining element in the circlip assembly are inserted into the two holes of the circlip, ensuring a stable fixation of the circlip on the rotating shaft and preventing it from loosening or falling off. The mating design of the circlip and retaining element provides a stronger connection, allowing the circlip to withstand higher rotational speeds and centrifugal forces, improving the safety and reliability of the system. The design of the annular portion and pin allows the retaining element to quickly and accurately mate with the circlip, simplifying the installation process and improving assembly efficiency. The compact design of the retaining element also reduces axial space usage.
[0007] According to some embodiments of the present invention, the retaining member further includes a first groove disposed radially inside the annular portion, and the first groove is circumferentially located between the two pin portions.
[0008] Thus, by providing the first groove in the retaining member and positioning the first groove between the two pin portions, installation of the retaining member can be guided, ensuring accurate connection between the retaining member and the retaining spring, and improving installation efficiency. The presence of the first groove provides additional positioning support, ensuring that the retaining member is not easily displaced during installation, thereby forming a stable connection with the retaining spring.
[0009] According to certain embodiments of the present invention, the retaining member further includes a second groove disposed radially inwardly of the annular portion, and the first groove and the second groove are disposed symmetrically along the circumferential direction.
[0010] As a result, the first and second grooves are symmetrically distributed along the circumference, ensuring structural balance and improving overall stability. During use, the symmetrical distribution of the first and second grooves effectively optimizes the dynamic balance of the holder, reducing vibration and eccentricity during rotation. It can also significantly reduce vibration caused by imbalance and improve operational smoothness.
[0011] According to some embodiments of the present invention, a circumferential length of the first groove is less than or equal to a circumferential distance between the two lugs.
[0012] Thus, the circumferential length of the first groove is less than or equal to the circumferential spacing between the two lugs of the circlip. This allows the circumferential length of the mounting guide plate, which is inserted into the first groove, to also be less than or equal to the circumferential spacing between the two lugs of the circlip. The mounting guide plate can partially extend between the two lugs of the circlip, thereby assisting in positioning the two pins of the retainer in the two holes of the circlip. This allows the pins of the retainer to be quickly and accurately inserted into the holes of the circlip.
[0013] According to some embodiments of the present invention, the first groove and the second groove are configured to achieve a dynamic unbalance of the circlip assembly of less than 5 g·mm by the combination of the first groove and the second groove. The first groove and the second groove may have the same shape.
[0014] Therefore, through the combined design of the first groove and the second groove, the dynamic balance performance of the retaining spring assembly can be improved, the overall operating stability is improved, and the service life is extended.
[0015] According to certain embodiments of the present invention, the two holes are respectively configured as through holes penetrating the two lugs in the axial direction.
[0016] Thus, the through hole allows the expansion tool to be inserted and operated more easily, simplifying the installation process; and this design is suitable for a variety of installation environments, improving the applicability of the retaining spring.
[0017] According to certain embodiments of the present invention, the inner diameter of the annular portion of the retaining member is greater than or equal to the inner diameter of the retaining spring.
[0018] Therefore, when the retainer is connected to the retaining spring, the inner diameter of the annular portion of the retainer is greater than or equal to the inner diameter of the retaining spring, so that the retainer can be easily sleeved on the rotating shaft, simplifying the installation process and avoiding damage to the rotating shaft.
[0019] According to certain embodiments of the present invention, an axial cross-section of the annular portion of the retainer has a rectangular shape.
[0020] Thus, the rectangular cross-section can enhance the overall structural stability and rigidity of the retainer, ensuring that the retainer is not easily deformed during use, thereby better retaining the retainer spring. In addition, the rectangular cross-section of the retainer simplifies the processing process, which is conducive to improving production efficiency and reducing manufacturing costs.
[0021] According to certain embodiments of the present invention, the retaining member further comprises two recessed portions recessed from an axial surface away from the clamping spring, and the two recessed portions respectively overlap with the two pin portions when viewed in the axial direction.
[0022] The two recesses effectively reduce the material usage of the retainer, thereby reducing overall weight and enhancing the lightweighting of the system. Furthermore, the overlapping design of the recess and the pin optimizes material distribution and improves dynamic balancing without compromising structural strength.
[0023] Another aspect of the present invention provides a hybrid power module, comprising a rotating shaft and a retaining spring assembly according to an embodiment of the present invention, wherein the retaining spring assembly is disposed on the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The diagram is a partial cross-sectional diagram of a hybrid power module including a retaining spring.
[0025] Figure 2 yes Figure 1 Schematic diagram of the circlip shown in .
[0026] Figure 3 It is a partial cross-sectional schematic diagram of a hybrid power module including a retaining spring assembly according to an embodiment of the present utility model.
[0027] Figure 4 It is a partially enlarged schematic diagram of a hybrid power module including a retaining spring assembly according to an embodiment of the present utility model.
[0028] Figure 5 It is a partial cross-sectional view at one angle of a hybrid power module including a clamp spring assembly according to an embodiment of the present utility model.
[0029] Figure 6 It is a partial cross-sectional view from another angle of a hybrid power module including a clamp spring assembly according to an embodiment of the present invention.
[0030] Figure 7 Schematic diagram of a retaining spring assembly according to an embodiment of the present invention.
[0031] Figure 8 It is a schematic diagram of the installation of the retaining spring assembly according to the embodiment of the present utility model. DETAILED DESCRIPTION
[0032] Hereinafter, embodiments of the present invention are described with reference to the accompanying drawings. The following detailed description and accompanying drawings are used to exemplarily illustrate the principles of the present invention. The present invention is not limited to the preferred embodiments described, and the scope of the present invention is defined by the claims. The present invention is now described in detail with reference to exemplary embodiments, and some embodiments are illustrated in the accompanying drawings. The following description is made with reference to the accompanying drawings, and unless otherwise indicated, the same figure numbers in different drawings represent the same or similar elements. The schemes described in the following exemplary embodiments do not represent all schemes of the present invention. On the contrary, these schemes are merely examples of systems and methods of various aspects of the present invention involved in the appended claims.
[0033] Figure 1 The diagram is a partial cross-sectional diagram of a hybrid power module including a retaining spring. Figure 2 yes Figure 1 The schematic diagram of the retaining spring is shown in FIG. Figure 1 As shown, the retaining spring 100 is mounted on the rotating shaft 200 of the hybrid module, and the rotating shaft 200 includes a mounting groove 210 for mounting the retaining spring 100. Figure 2 As shown, the retaining spring 100 includes a body 110 having a generally annular shape and two lugs 120 located at the circumferential ends of the body 110. The retaining spring 100 is made of an elastic material. The two lugs 120 of the retaining spring 100 define an opening 130. The retaining spring 100 also includes two holes 140 located in the lugs 120 and extending axially. Thus, the retaining spring 120 can be elastically expanded using an expansion tool (not shown) and fitted onto the rotating shaft 200. Upon reaching the mounting groove 210 of the rotating shaft 200, the retaining spring 100 can elastically contract and fit into the mounting groove 210. However, when the rotating shaft 200 rotates at a high speed (e.g., reaching or exceeding 18060 rpm), the opening 130 of the retaining spring 100 is more susceptible to centrifugal force, which may cause the retaining spring to deform, loosen, or even fall off, thereby affecting the safety and reliability of the entire system.
[0034] To address the above-mentioned technical problems, the present invention provides a retaining spring assembly for a rotating shaft. In an exemplary embodiment, the retaining spring assembly of the present invention is applied to a hybrid power module of a vehicle. However, the present invention is not limited thereto. Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the drawings illustrate only certain embodiments of the present invention, and the scope of the present invention should be determined in accordance with the claims.
[0035] Figure 3 It is a partial cross-sectional schematic diagram of a hybrid power module including a retaining spring assembly according to an embodiment of the present utility model. Figure 4 It is a partially enlarged schematic diagram of a hybrid power module including a retaining spring assembly according to an embodiment of the present utility model. Figure 5 It is a partial cross-sectional view at one angle of a hybrid power module including a clamp spring assembly according to an embodiment of the present utility model. Figure 6 It is a partial cross-sectional view from another angle of a hybrid power module including a clamp spring assembly according to an embodiment of the present invention. Figure 7 Schematic diagram of a retaining spring assembly according to an embodiment of the present invention. Figure 8 It is a schematic diagram of the installation of the retaining spring assembly according to the embodiment of the present utility model.
[0036] According to an embodiment of the present invention, the hybrid module includes a rotating shaft 1 and a circlip assembly 2. The circlip assembly 2 includes a circlip 10 and a retaining member 20. The circlip 10 and the retaining member 20 are disposed on the rotating shaft 1. The rotating shaft 1 includes a mounting groove 1' for mounting the circlip 10.
[0037] According to an embodiment of the present invention, a retaining spring 10 has a generally annular shape and includes an opening 11. The retaining spring 10 also includes two lugs 12 circumferentially located on either side of the opening 11. In an exemplary embodiment, the retaining spring 10 includes a generally annular main body 13, with the two lugs 12 located at circumferential ends of the main body 13. Each lug 12 is provided with an axially extending hole 14. In an exemplary embodiment, the retaining spring 10 is made of an elastic material. In some embodiments, the two holes 14 of the retaining spring 10 are configured as through holes extending axially through the two lugs 12.
[0038] During the installation process, an expansion tool (such as pliers) can be inserted into the two holes 14 of the circlip 10 to expand the opening 11 of the circlip 10 and increase the inner diameter of the circlip 10, thereby facilitating the circlip 10 to be sleeved on the rotating shaft 1. When the circlip 10 is moved to the mounting groove of the rotating shaft 1, the expansion tool can be removed from the circlip 10, so that the circlip 10 can elastically contract and be fixed in the mounting groove of the rotating shaft 1.
[0039] Thus, the annular design and opening 11 of the retaining spring 10 enable the retaining spring 10 to flexibly adapt to rotating shafts of varying diameters, thereby enhancing its versatility and range of applicability. Inserting an expansion tool into the hole 14 of the retaining spring 10 easily expands the opening 11 and increases the inner diameter, simplifying the installation process. The hole 14 of the retaining spring 10 can also be used to mate with the pin portion 22 of the retaining member 20 to ensure the stability of the retaining spring 10 during use, as described below. Furthermore, the through-hole 14 design facilitates the insertion and manipulation of the expansion tool, simplifying the installation process; this design is also suitable for a variety of installation environments, enhancing the applicability of the retaining spring 10.
[0040] According to an embodiment of the present invention, the retainer 20 includes an annular portion 21 having a substantially annular shape and two pin portions 22 extending axially from the annular portion 21. The two pin portions 22 are configured to be inserted into the two holes 14 of the clip spring 10, respectively.
[0041] Thus, by inserting the two pin portions 22 of the retainer 20 into the holes 14 of the retainer 10, the retainer 20 and the retainer 10 can form a secure mechanical connection, thereby ensuring the stability of the retainer 10 during use. The pin portions 22 of the retainer 20 provide an additional fixing point for the retainer 10, further enhancing the retaining effect of the retainer 10 and preventing it from falling out of or shifting from the mounting groove of the rotating shaft 1 during use. The design of the annular portion 21 and the pin portions 22 enables the retainer 20 to quickly and accurately connect with the retainer 10, simplifying the installation process and improving assembly efficiency. The compact design of the retainer 20 also reduces axial space usage.
[0042] In some embodiments, the retainer 20 further includes a first groove 23 disposed radially inwardly of the annular portion 22. The first groove 23 is circumferentially located between the two pin portions 22. In an exemplary embodiment, the circumferential length of the first groove 23 is less than or equal to the circumferential spacing between the two lugs 12 of the clip 10. The first groove 23 is used to guide the installation of the retainer 20 and the connection between the retainer 20 and the clip 10.
[0043] During the installation process, if Figure 8 As shown, the mounting guide plate 30 can be inserted into the first groove 23 of the retainer 20, and one axial end of the mounting guide plate 30 can extend from the first groove 23 of the retainer 20. The circumferential length of the first groove 23 is less than or equal to the circumferential spacing between the two lugs 12 of the retainer 10. Therefore, the circumferential length of the mounting guide plate 30 inserted into the first groove 23 is also set to be less than or equal to the circumferential spacing between the two lugs 12 of the retainer 10. The mounting guide plate 30 can partially extend between the two lugs 12 of the retainer 20, thereby assisting in positioning the two pin portions 22 of the retainer 20 in the two holes 14 of the retainer 10. This allows the pin portions 22 of the retainer 20 to be quickly and accurately inserted into the holes 14 of the retainer 10.
[0044] Thus, by providing the first groove 23 in the retaining member 20 and positioning the first groove 23 between the two pin portions 22, the installation of the retaining member 20 can be guided, ensuring accurate connection between the retaining member 20 and the retaining spring 10, and improving installation efficiency. The presence of the first groove 23 provides additional positioning support, ensuring that the retaining member 20 is not easily displaced during installation, thereby forming a stable connection with the retaining spring 10.
[0045] In some embodiments, the inner diameter of the annular portion 21 of the retainer 20 is greater than or equal to the inner diameter of the circlip 10. Therefore, when the retainer 20 is connected to the circlip 10, the inner diameter of the annular portion 21 of the retainer 20 is greater than or equal to the inner diameter of the circlip 10, so that the retainer 20 can be easily sleeved on the rotating shaft 1, simplifying the installation process and avoiding damage to the rotating shaft 1.
[0046] In some embodiments, the retainer 20 further includes a second groove 24 disposed radially inwardly of the annular portion 22. The first groove 23 and the second groove 24 are symmetrically distributed along the circumference. In an exemplary embodiment, the first groove 23 and the second groove 24 are configured such that the combination of the first groove 23 and the second groove 24 achieves a dynamic unbalance of the circlip assembly 2 of less than 5 g·mm.
[0047] Thus, the combined design of the first groove 23 and the second groove 24 improves the dynamic balance performance of the retaining spring assembly 2, enhances overall operational stability, and prolongs its service life. During use, the combined design of the first groove 23 and the second groove 24 effectively reduces vibration and eccentricity during rotation of the retaining spring assembly 2, significantly reducing vibration caused by imbalance and improving operational smoothness.
[0048] In some embodiments, the annular portion 22 of the retainer 20 has a rectangular axial cross-section. This rectangular cross-section enhances the overall structural stability and rigidity of the retainer 20, ensuring that the retainer 20 is less susceptible to deformation during use, thereby better retaining the retainer spring 10. Furthermore, the rectangular cross-section of the retainer 20 simplifies the manufacturing process, improving production efficiency and reducing manufacturing costs.
[0049] In some embodiments, the retaining member 20 further includes two recesses 25 recessed from the axial surface away from the retaining spring 10. The two recesses 25 overlap with the two pin portions 21 when viewed axially. During the manufacturing process of the retaining member 20, the pin portion 22 can be formed by a process such as stamping, and the recesses 25 can be formed at positions corresponding to the pin portion 22. Thus, the design of the two recesses 25 effectively reduces the material usage of the retaining member 20, thereby reducing the overall weight and improving the lightweight level of the system. In addition, the overlapping design of the recesses 25 and the pin portion 21 optimizes material distribution and improves dynamic balancing performance without affecting structural strength.
[0050] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the configurations and methods of the above-described embodiments. On the contrary, the present invention is intended to cover various modifications and equivalent configurations. In addition, although the various elements and method steps of the disclosed utility model are shown in various exemplary combinations and configurations, other combinations including more or fewer elements or methods also fall within the scope of the present invention.
[0051] Reference Signs List
[0052] 1 rotating shaft;
[0053] 1' mounting slot;
[0054] 2. Circlip assembly;
[0055] 10. Circlip;
[0056] 11 Open your mouth;
[0057] 12 lugs;
[0058] 13 main body;
[0059] 14 holes;
[0060] 20 retaining parts;
[0061] 21 annular part;
[0062] 22 pin department;
[0063] 23 first groove;
[0064] 24 second groove;
[0065] 25 recess;
[0066] 30 Install the guide plate.
Claims
1. A retaining spring assembly (2) for a rotating shaft (1), characterized in that: include: A circlip (10) having a generally annular shape and comprising an opening (11), wherein the circlip (10) further comprises two lugs (12) circumferentially located on either side of the opening (11) and two holes (14) respectively located on the lugs (12) and extending in the axial direction; and A retainer (20) includes an annular portion (21) having a substantially annular shape and two pin portions (22) extending axially from the annular portion (21), wherein the two pin portions (22) are configured to be respectively inserted into the two holes (14) of the clamping spring (10).
2. The retaining spring assembly (2) according to claim 1, characterized in that The retaining member (20) further includes a first groove (23) provided on the radial inner side of the annular portion (21), wherein the first groove (23) is located between the two pin portions (22) along the circumferential direction.
3. The retaining spring assembly (2) according to claim 2, characterized in that: The retaining member further comprises a second groove (24) arranged on the radial inner side of the annular portion (21), and the first groove (23) and the second groove (24) are arranged to be symmetrically distributed along the circumferential direction.
4. The retaining spring assembly (2) according to claim 3, characterized in that The circumferential length of the first groove (23) is less than or equal to the circumferential distance between the two lugs (12).
5. The retaining spring assembly (2) according to claim 4, characterized in that: The first groove (23) and the second groove (24) are configured so that the dynamic unbalance of the clamping spring assembly (2) is less than 5g·mm through the combination of the first groove (23) and the second groove (24).
6. The circlip assembly (2) according to any one of claims 1 to 5, characterized in that: The two holes (14) are respectively configured as through holes penetrating the two lugs (12) in the axial direction.
7. The circlip assembly (2) according to any one of claims 1 to 5, characterized in that: The inner diameter of the annular portion (21) of the retaining member (20) is greater than or equal to the inner diameter of the retaining spring (10).
8. The circlip assembly (2) according to any one of claims 1 to 5, characterized in that: The annular portion (21) of the retainer (20) has a rectangular shape in axial cross-section.
9. The retaining spring assembly (2) according to claim 8, characterized in that: The retaining member (20) further comprises two recessed portions (25) recessed from an axial surface away from the clamping spring (10), wherein the two recessed portions (25) overlap with the two pin portions (22) respectively when viewed in the axial direction.
10. A hybrid power module, characterized in that: The hybrid module comprises a rotating shaft (1) and a circlip assembly (2) according to any one of claims 1 to 9, wherein the circlip assembly (2) is arranged on the rotating shaft (1).