Torsional vibration damper with protective structure
Patent Information
- Application Number
- CN202522688543.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-18
AI Technical Summary
[0005]有鉴于此，本申请的目的是提供一种具有保护结构的扭转减振装置，解决运输过程中容易因颠簸、震动、磕碰发生蝶形弹簧被拉扯变形而导致失效的问题
[0031]通过在次级减振件外沿设置第一限位结构，限制了轴向弹性件在远离盖板件的轴向上的形变位移，避免其因运输过程中的颠簸、震动等产生过量形变而不可逆失效，有效保护了轴向弹性件的结构完整性和功能有效性。
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Figure CN224903882U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive transmission technology, and in particular to a torsional vibration damping device with a protective structure. Background Technology
[0002] Torsional vibration damping devices are used to reduce torsional vibrations during engine transmission, thereby reducing engine amplitude and angular fluctuations. Existing torsional vibration damping devices typically have a primary damping component on the engine side and a secondary damping component on the gearbox side. The two are connected and transmit torque by at least one pair of arc springs. The primary damping component overcomes the spring's action on the secondary damping component by compressing the arc spring's angle of action. Therefore, the primary and secondary damping components can undergo relative torsion within the arc spring's angle of action, achieving a vibration reduction effect.
[0003] The disc spring is one of the key elastic components in a torsional vibration damping device. It is typically axially positioned between the primary damping component of the compressed arc spring and the hub connecting to the engine, with its outer edge abutting the inner side of the cover plate, working in conjunction with the arc spring. However, research has revealed that existing devices lack effective constraints on the axial displacement of the disc spring. Therefore, during transportation, the disc spring is prone to stretching and deformation due to bumps, vibrations, and impacts, leading to its failure.
[0004] Therefore, there is an urgent need to provide a new design solution to solve the above-mentioned technical problems. Utility Model Content
[0005] In view of this, the purpose of this application is to provide a torsional vibration damping device with a protective structure to solve the problem that the disc spring is easily stretched and deformed due to bumps, vibrations and collisions during transportation, which leads to failure.
[0006] To achieve the above technical objectives, this application provides a torsional vibration damping device with a protective structure, including a damping device body and a protective structure;
[0007] The vibration damping device body includes a primary vibration damping component, a secondary vibration damping component, a circumferential elastic component, an axial elastic component, and a hub component;
[0008] The primary vibration damping component is rotatable around a preset axis and is equipped with a cover plate.
[0009] The circumferential elastic element is installed between the primary damping element and the cover plate element;
[0010] The secondary damping component is disposed between the primary damping component and the cover plate component, and is able to overcome the effect of the circumferential elastic component and to be torsionally restricted relative to the primary damping component;
[0011] The hub component is torsionally connected to the secondary damping component;
[0012] The axial elastic element is torsionally fixed between the secondary damping element and the hub element, and its outer edge axially abuts against the inner side of the cover plate element.
[0013] The protective structure includes a first limiting structure;
[0014] The first limiting structure is located on the outer edge of the secondary damping member and is used to limit the deformation displacement of the axial elastic member in the axial direction away from the cover plate member.
[0015] Furthermore, the axial gap between the first limiting structure and the axial elastic element is no greater than 2mm.
[0016] Furthermore, a shim is fixed to the inner side of the primary damping component to resist torsion.
[0017] A first sealing element is also installed between the gasket and the secondary damping element;
[0018] The protective structure also includes a second limiting structure;
[0019] The second limiting structure is located at the position where the first seal and the secondary damping member mate in the central hole, so as to limit the mating clearance between the first seal and the central hole of the secondary damping member.
[0020] Furthermore, the gap between the second limiting structure and the central hole of the secondary damping component is no greater than 0.7 mm.
[0021] Furthermore, the hub component is also torsionally connected to an inertia component on the side opposite to the axial elastic component;
[0022] The protective structure also includes a third limiting structure;
[0023] The third limiting structure is located on the side of the cover plate facing the inertia member, and is used to limit the deformation displacement of the inertia member in the axial direction near the cover plate.
[0024] Furthermore, the axial gap between the third limiting structure and the inertia component is no greater than 2mm.
[0025] Furthermore, a second sealing element is provided on the inner side of the cover plate;
[0026] The outer edge of the axial elastic element abuts against the second seal.
[0027] Furthermore, the secondary damping component is a flywheel component.
[0028] Furthermore, the axial elastic element is a disc spring.
[0029] Furthermore, the circumferential elastic element is an arc-shaped spring.
[0030] As can be seen from the above technical solutions, the torsional vibration damping device with protective structure designed in this application has the following beneficial effects:
[0031] By setting a first limiting structure on the outer edge of the secondary damping component, the deformation displacement of the axial elastic component in the axial direction away from the cover plate is limited, avoiding irreversible failure due to excessive deformation caused by bumps and vibrations during transportation, and effectively protecting the structural integrity and functional effectiveness of the axial elastic component. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is an overall cross-sectional view of a torsional vibration damping device with a protective structure provided in this application;
[0034] Figure 2 This is a perspective view of a secondary damping component of a torsional vibration damping device with a protective structure provided in this application;
[0035] Figure 3 This is a cross-sectional view of the secondary damping component and the first sealing component of a torsional vibration damping device with a protective structure provided in this application.
[0036] Figure 4 A perspective view of a cover plate component of a torsional vibration damping device with a protective structure provided in this application;
[0037] Figure 5 This is a cross-sectional view of the fit between the cover plate and the inertia component of a torsional vibration damping device with a protective structure provided in this application.
[0038] In the diagram: 100, Preset axis; 1, Primary damping component; 11, Gasket component; 12, Gear ring; 2, Secondary damping component; 21, First limiting structure; 22, Lug; 23, Central hole; 3, Cover plate component; 31, Third limiting structure; 4, Hub component; 5, Axial elastic component; 6, Inertia component; 71, First sealing component; 711, Secondary positioning part; 712, Second limiting structure; 72, Second sealing component; 8, Circumferential elastic component. Detailed Implementation
[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.
[0040] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0042] This application discloses a torsional vibration damping device with a protective structure.
[0043] Please see Figure 1 as well as Figure 2 One embodiment of a torsional vibration damping device with a protective structure provided in this application includes:
[0044] Vibration damping device body and protective structure.
[0045] The vibration damping device body includes a primary vibration damping component 1, a secondary vibration damping component 2, a circumferential elastic component 8, an axial elastic component 5, and a rotating hub component 4.
[0046] The primary damping component 1 can rotate around a preset axis 100 and is equipped with a cover plate 3; taking the damping device body as a dual-mass flywheel as an example, the primary damping component 1 can be a flywheel component, with a gear ring 12 fixed on its outer circumference for connecting to the engine.
[0047] The circumferential elastic element 8 is installed between the primary vibration damper 1 and the cover plate 3. The circumferential elastic element 8 can be arc-shaped and is circumferentially installed around the preset axis 100. It is preferred to design at least one pair and arrange them symmetrically on both sides of the preset axis 100. This can ensure that the force is uniform during operation and improve the vibration damping effect.
[0048] The secondary damper 2 is disposed between the primary damper 1 and the cover plate 3, and is able to overcome the effect of the circumferential elastic element 8 and be torsional relative to the primary damper 1. The secondary damper 2 is rotatable about a preset axis 100 and has a disc structure design with a lug 22 on its outer edge, which can contact the circumferential elastic element 8. The torque received by the primary damper 1 from the engine side is transmitted to the secondary damper 2 through the circumferential elastic element 8 and the lug 22.
[0049] The hub component 4 is torsionally connected to the secondary damping component 2; the hub component 4 can be a splined hub for connecting the gearbox.
[0050] The axial elastic element 5 is torsionally fixed between the secondary damping element 2 and the hub element 4, and its outer edge axially (in a direction parallel to the preset axis 100) abuts against the inner side of the cover plate element 3; the axial elastic element 5 can be a butterfly-shaped elastic element.
[0051] The structural composition and assembly of the above-mentioned vibration damping device body can be further referenced from the design of existing vibration damping devices, and will not be elaborated further.
[0052] The main improvement of this application lies in the design of a protective structure, which includes a first limiting structure 21.
[0053] The first limiting structure 21 is located on the outer edge of the secondary damper 2 and is used to limit the deformation displacement of the axial elastic member 5 in the axial direction away from the cover plate member 3. The first limiting structure 21 can be integrally formed with the secondary damper 2, and its specific structure can be a flange structure, symmetrically distributed on both sides of the outer edge of the secondary damper 2.
[0054] The torsional vibration damping device with a protective structure designed in this application has the following beneficial effects:
[0055] By setting a first limiting structure 21 on the outer edge of the secondary damping component 2, the deformation displacement of the axial elastic component 5 in the axial direction away from the cover plate component 3 is limited, avoiding its irreversible failure due to excessive deformation caused by bumps and vibrations during transportation, and effectively protecting the structural integrity and functional effectiveness of the axial elastic component 5.
[0056] The above is Embodiment 1 of a torsional vibration damping device with a protective structure provided in this application. The following is Embodiment 2 of a torsional vibration damping device with a protective structure provided in this application. Please refer to the following for details. Figures 1 to 5 .
[0057] Based on the solution of Embodiment 1 above:
[0058] Furthermore, the axial gap (parallel to the preset axis 100) between the first limiting structure 21 and the axial elastic member 5 is no greater than 2mm (>0mm, ≤2mm). This gap is understood to be reserved space for the deformation of the axial elastic member 5. When the deformation exceeds 2mm, it will be stopped by the first limiting structure 21 and cannot continue to deform. Taking a 2mm gap as an example, the maximum allowable axial deformation displacement of the axial elastic member 5 is 2mm. Of course, this gap distance varies depending on the different axial elastic members 5. This application only provides a specific application example and does not impose any limitations.
[0059] Furthermore, such as Figure 1 As shown, a gasket 11 is torsionally fixed on the inner side of the primary damper 1; a first seal 71 is also installed between the gasket 11 and the secondary damper 2; the first seal 71 is an annular seal with a Z-shaped cross section, which can position the gasket 11 and the secondary damper 2 in the radial direction respectively, while separating the gasket 11 and the secondary damper 2. This design is an existing design and will not be described in detail.
[0060] like Figure 3 As shown, when the design includes a first seal 71, the protective structure may also include a second limiting structure 712.
[0061] The second limiting structure 712 is located at the position where the first sealing member 71 mates with the central hole 23 of the secondary damping member 2, thereby limiting the mating clearance between the first sealing member 71 and the central hole 23 of the secondary damping member 2, and thus limiting the radial (perpendicular to the preset axis 100) movement of the secondary damping element. This design improves the radial movement of the secondary damping element during transportation, thereby mitigating the deformation of the axial elastic member 5 caused by its radial movement, and further protecting the structural integrity and functional effectiveness of the axial elastic member 5.
[0062] The second limiting structure 712 can be a thickened portion on the secondary positioning part 711 of the central hole 23 of the radially positioning secondary damping member 2 on the first sealing member 71. It can be understood that the secondary positioning part 711 of the radially positioning secondary damping member 2 on the first sealing member 71 is thickened to reduce the fitting gap between it and the secondary damping member 2, thereby limiting the radial movement of the secondary damping element.
[0063] For example, the thickness of the secondary positioning part 711 is conventionally 2.5 mm, which can be increased to 3.0 mm to reduce the fitting clearance between it and the central hole 23 of the secondary damping member 2.
[0064] In addition, a second sealing element 72 is installed on the inner side of the cover plate 3. The second sealing element 72 is an annular sealing element. The outer edge of the axial elastic element 5 abuts against the second sealing element 72 to increase the sealing effect. This design is an existing design and will not be described in detail.
[0065] Furthermore, the gap between the second limiting structure 712 and the central hole 23 of the secondary damping member 2 is no greater than 0.7mm. It can be understood that the fit gap (maximum single-sided gap) between the secondary positioning part 711 after the second limiting structure 712 is provided and the secondary damping member 2 is ≤0.7mm, thereby achieving a better radial positioning effect.
[0066] Of course, it is not limited to a design of ≤0.7mm. The specific size can be adjusted according to the assembly effect of different products, without any restrictions.
[0067] Furthermore, such as Figure 1 as well as Figure 5 As shown, the hub component 4 is also torsionally connected to an inertia component 6 on the side opposite to the axial elastic component 5. The inertia component 6 is an inertia disk, which can be torsionally fixed together with the secondary damping component 2, the axial elastic component 5, and the hub component 4 via a pin. This connection is an existing design and will not be described in detail.
[0068] Taking the inertia component 6 as an example, the protective structure may also include a third limiting structure 31.
[0069] The third limiting structure 31 is provided on the side of the cover plate 3 facing the inertia member 6, and is used to limit the deformation displacement of the inertia member 6 in the axial direction near the cover plate 3.
[0070] like Figure 3 As shown, the third limiting structure 31 can be an annular boss protruding from the side of the cover plate 3 facing the inertia member 6, arranged around the preset axis 100. This structural design can effectively limit the axial deformation displacement of the inertia member 6. When the inertia member 6 experiences excessive axial displacement towards the cover plate 3 due to factors such as vibration, the annular boss can promptly act as a stop. This improves the situation where excessive deformation displacement of the inertia member 6 during transportation could cause the axial elastic member 5 to be pulled and potentially lead to deformation failure, further protecting the structural integrity and functional effectiveness of the axial elastic member 5.
[0071] Furthermore, the axial gap between the third limiting structure 31 and the inertia member 6 is no greater than 2mm (>0mm, ≤2mm). This gap is also reserved for the small axial deformation that the inertia member 6 may undergo during normal operation. If the axial deformation of the inertia member 6 exceeds 2mm, the third limiting structure 31 will prevent it from continuing to deform, avoiding collisions or damage to other components due to excessive deformation, thereby ensuring the stable operation of the entire torsional vibration damping device. Of course, this gap distance is not limited to no more than 2mm and can be designed and varied according to actual needs.
[0072] The above provides a detailed description of a torsional vibration damping device with a protective structure provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A torsional vibration damping device with a protective structure, characterized in that, Including the vibration damping device body and protective structure; The vibration damping device body includes a primary vibration damping component (1), a secondary vibration damping component (2), a circumferential elastic component (8), an axial elastic component (5), and a hub component (4). The primary damping component (1) is capable of rotating around a preset axis (100) and is equipped with a cover plate (3). The circumferential elastic element (8) is installed between the primary damping element (1) and the cover plate (3); The secondary damping member (2) is disposed between the primary damping member (1) and the cover plate member (3), and is able to overcome the effect of the circumferential elastic member (8) and to be torsionally restricted relative to the primary damping member (1); The hub component (4) is torsionally connected to the secondary damping component (2); The axial elastic element (5) is torsionally fixed between the secondary damping element (2) and the hub element (4), and its outer edge axially abuts against the inner side of the cover plate element (3); The protective structure includes a first limiting structure (21); The first limiting structure (21) is located on the outer edge of the secondary damping member (2) to limit the deformation displacement of the axial elastic member (5) in the axial direction away from the cover plate member (3).
2. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The axial gap between the first limiting structure (21) and the axial elastic member (5) is no greater than 2 mm.
3. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The inner side of the primary damping component (1) is fixed with a gasket (11) for anti-torsion. A first seal (71) is also installed between the gasket (11) and the secondary damping member (2). The protective structure also includes a second limiting structure (712). The second limiting structure (712) is located at the position where the first seal (71) and the secondary damping member (2) meet the central hole (23) to limit the fitting gap between the first seal (71) and the central hole (23) of the secondary damping member (2).
4. A torsional vibration damping device with a protective structure according to claim 3, characterized in that, The gap between the second limiting structure (712) and the central hole (23) of the secondary damping member (2) is no greater than 0.7 mm.
5. A torsional vibration damping device with a protective structure according to claim 1, characterized in that, The hub component (4) is also torsionally connected to an inertia component (6) on the side opposite to the axial elastic component (5). The protective structure also includes a third limiting structure (31). The third limiting structure (31) is provided on one side of the cover plate (3) facing the inertia member (6) to limit the deformation displacement of the inertia member (6) in the axial direction near the cover plate (3).
6. A torsional vibration damping device with a protective structure according to claim 5, characterized in that, The axial gap between the third limiting structure (31) and the inertia component (6) is no greater than 2 mm.
7. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The inner side of the cover plate (3) is provided with a second sealing element (72); The outer edge of the axial elastic element (5) abuts against the second seal (72).
8. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The secondary damping component (2) is a flywheel component.
9. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The axial elastic element (5) is a butterfly spring.
10. The torsional vibration damping device with a protective structure according to claim 1, characterized in that, The circumferential elastic element (8) is an arc-shaped spring.