Flywheel

Abstract

There is provided a flywheel comprising: a spring (100); the primary mass comprises a first shell (210) and a second shell (220), and the first shell (210) and the second shell (220) define a containing space used for containing the spring (100); the spring (100) is arranged between the primary mass and the secondary mass, the secondary mass comprises a flange (410) and a splined hub (420), and the splined hub (420) is fixed to the flange (410); the diaphragm spring (500) is arranged between the flange (410) and the second shell (220), and the inner circumference of the diaphragm spring (500) extends into the position between the flange (410) and the splined hub (420); and the sealing ring (600) is arranged between the diaphragm spring (500) and the splined hub (420). A gap between the diaphragm spring (500) and the splined hub (420) can be sealed through the sealing ring (600), and grease is prevented from leaking from the gap.

Description

flywheel Technical Field

[0001] The present application relates to the technical field of flywheels, and more particularly to a flywheel capable of preventing grease leakage. Background Art

[0002] As shown in Figures 1 and 2, in a flywheel, especially a dual-mass flywheel, the diaphragm spring 500' and the spline hub 420' are fixed to the flange 410' by riveting. Generally, multiple riveting points are evenly arranged on the circumference and riveted together using rivets 700'. However, except near the riveting points, there may be a gap between the diaphragm spring 500' and the spline hub 420'. During operation, grease 300' can flow from the spring cavity to the middle part of the flange 410', and move outward under the action of centrifugal force at a certain speed, leaking from the gap between the diaphragm spring 500' and the spline hub 420', thereby causing grease 300' to leak.

[0003] Summary of the Invention

[0004] The object of the present application is to provide a flywheel capable of preventing grease leakage.

[0005] The present application provides a flywheel, comprising:

[0006] spring;

[0007] a primary mass, the primary mass comprising a first shell and a second shell, the first shell and the second shell defining an accommodating space for accommodating the spring;

[0008] a secondary mass, the spring being disposed between the primary mass and the secondary mass, the secondary mass comprising a flange and a spline hub, the spline hub being fixed to the flange;

[0009] a diaphragm spring disposed between the flange and the second housing, wherein an inner periphery of the diaphragm spring extends between the flange and the spline hub; and

[0010] A sealing ring is provided between the diaphragm spring and the spline hub.

[0011] According to an embodiment of the present application, the spline hub and the diaphragm spring are riveted to the flange by rivets.

[0012] According to an embodiment of the present application, there are multiple rivets, and the multiple rivets are evenly distributed in the circumferential direction.

[0013] According to an embodiment of the present application, the sealing ring is an annular sealing ring, and the outer periphery of the sealing ring is located radially within the circumference of the plurality of rivets.

[0014] According to an embodiment of the present application, the sealing ring is an annular sealing ring, and the outer circumference of the sealing ring radially exceeds the circumference of the multiple rivets, and the sealing ring is provided with avoidance holes for avoiding the rivets.

[0015] According to an embodiment of the present application, the sealing ring is a rubber sealing ring.

[0016] In the flywheel of the present application, a sealing ring is provided between the diaphragm spring and the spline hub. The sealing ring can seal the gap between the diaphragm spring and the spline hub to prevent grease from leaking from the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a flywheel in the related art;

[0018] FIG2 is a partial cross-sectional view of a flywheel in the related art;

[0019] FIG3 is a schematic structural diagram of a flywheel in an embodiment of the present application;

[0020] FIG4 is a partial cross-sectional view of a flywheel in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following detailed description and accompanying drawings are used to illustrate the principles of the present application. The present application is not limited to the preferred embodiments described, and the scope of protection of the present application is defined by the claims.

[0022] An embodiment of the present application provides a flywheel, in particular a dual-mass flywheel, which includes: a spring 100, a primary mass, a secondary mass, a diaphragm spring 500 and a sealing ring 600.

[0023] The primary mass includes a first housing 210 and a second housing 220 , which define an accommodation space for accommodating the spring 100 . The first housing 210 can be connected to a power source of the engine, such as a crankshaft of the engine.

[0024] Spring 100 is disposed between the primary mass and the secondary mass to dampen torsional vibrations. The secondary mass includes a flange 410 and a splined hub 420, which is secured to the flange 410. Specifically, spring 100 can be disposed between the primary mass and the flange 410 to dampen torsional vibrations. Splined hub 420 can output torque. For example, splined hub 420 can be connected to the input shaft of a transmission.

[0025] The diaphragm spring 500 is disposed between the flange 410 and the second housing 220, and is compressed between the flange 410 and the second housing 220 in the axial direction of the flywheel. The inner periphery of the diaphragm spring 500 contacts the flange 410, while the outer periphery of the diaphragm spring 500 contacts the second housing 220. Under the action of the restoring force, the inner periphery of the diaphragm spring 500 is pressed against the flange 410, while the outer periphery of the diaphragm spring 500 is pressed against the second housing 220. Furthermore, the inner periphery of the diaphragm spring 500 extends between the flange 410 and the spline hub 420, and the spline hub 420 and the diaphragm spring 500 are secured to the flange 410 together. For example, the spline hub 420 and the diaphragm spring 500 can be secured to the flange 410 together by riveting.

[0026] The sealing ring 600 is provided between the diaphragm spring 500 and the spline hub 420. The sealing ring 600 can seal the gap between the diaphragm spring 500 and the spline hub 420 to prevent the grease 300 from leaking from the gap.

[0027] The spline hub 420 and the diaphragm spring 500 are fixed to the flange 410 by riveting, specifically, they can be fixed to the flange 410 by rivets 700. In one example, there are multiple rivets 700, and the multiple rivets 700 are evenly distributed in the circumferential direction. In this case, the rivets 700 fix the spline hub 420 and the diaphragm spring 500 to the flange 410. At the riveting point, that is, where the rivet 700 is located, the spline hub 420 and the diaphragm spring 500 are riveted together with the flange 410 by the rivet 700. Under the action of the rivet 700, the spline hub 420, the diaphragm spring 500 and the flange 410 are in close contact with each other without any gap, except where the rivet 700 is located, that is, in the gap between adjacent rivets 700. The inner circumference of the diaphragm spring 500 is pressed against the flange 410 on one side, and the inner circumference of the diaphragm spring 500 is pressed against the spline hub 420 on the other side. There may be a gap between them. During operation, grease 300 can flow from the spring cavity (that is, the accommodating space of the spring 100) to the middle part of the flange 410, move outward under the action of centrifugal force at a certain speed, and leak from the gap between the diaphragm spring 500 and the spline hub 420. In the embodiment of the present application, a sealing ring 600 is provided between the diaphragm spring 500 and the spline hub 420. The sealing ring 600 can seal the gap between the diaphragm spring 500 and the spline hub 420, thereby preventing grease 300 from leaking from the gap.

[0028] In the embodiment of the present application, the sealing ring 600 is an annular sealing ring that seals the gap between the diaphragm spring 500 and the spline hub 420 along the entire circumference, thereby preventing grease 300 from leaking through the gap. Furthermore, the outer circumference of the sealing ring 600 is radially within the circumference of the plurality of rivets 700. That is, the outer diameter of the sealing ring 600 is smaller than the diameter of the circumference of the plurality of rivets 700. The provision of the sealing ring 600 does not affect the riveted attachment of the spline hub 420 and diaphragm spring 500 to the flange 410. When the spline hub 420 and diaphragm spring 500 are riveted to the flange 410, the diaphragm spring 500 and spline hub 420 compress the sealing ring 600, thereby sealing the gap between the diaphragm spring 500 and the spline hub 420.

[0029] In this embodiment of the present application, the sealing ring 600 is an annular sealing ring that seals the gap between the diaphragm spring 500 and the spline hub 420 along the entire circumference, thereby preventing grease 300 from leaking through the gap. The outer circumference of the sealing ring 600 radially extends beyond the circumference of the multiple rivets 700. In other words, the outer diameter of the sealing ring 600 is larger than the diameter of the circumference of the multiple rivets 700. Furthermore, the sealing ring 600 is provided with clearance holes for the rivets 700. This ensures that the sealing ring 600 does not interfere with the riveting of the diaphragm spring 500 and the spline hub 420 to the flange 410. When the spline hub 420 and diaphragm spring 500 are riveted to the flange 410, the diaphragm spring 500 and the spline hub 420 compress the sealing ring 600, thereby sealing the gap between the diaphragm spring 500 and the spline hub 420. Furthermore, in this case, the sealing ring 600 provides a larger sealing area, resulting in a better sealing effect.

[0030] The sealing ring 600 is a rubber sealing ring. When the spline hub 420 and the diaphragm spring 500 are fixed to the flange 410 by riveting, the diaphragm spring 500 and the spline hub 420 squeeze the sealing ring 600 to achieve a good sealing effect.

[0031] Optionally, the sealing ring 600 is a ring-shaped thin rubber sealing ring.

[0032] Therefore, in the flywheel of the present application, a sealing ring 600 is provided between the diaphragm spring 500 and the spline hub 420 . The sealing ring 600 can seal the gap between the diaphragm spring 500 and the spline hub 420 to prevent the grease 300 from leaking from the gap.

[0033] As mentioned above, although the exemplary embodiments of the present application have been described with reference to the accompanying drawings, the present application is not limited to the above specific embodiments, and the scope of protection of the present application should be defined by the claims and their equivalents.

[0034] Reference Signs List

[0035] Spring 100

[0036] First housing 210

[0037] Second housing 220

[0038] Grease 300, 300'

[0039] Flange 410, 410'

[0040] Spline hub 420, 420'

[0041] Diaphragm spring 500, 500'

[0042] Seal 600

[0043] Rivet 700, 700'

Claims

1. A flywheel, characterized in that: The flywheel comprises: Spring (100); A primary mass, the primary mass comprising a first shell (210) and a second shell (220), the first shell (210) and the second shell (220) defining an accommodation space for accommodating the spring (100); A secondary mass, the spring (100) being disposed between the primary mass and the secondary mass, the secondary mass comprising a flange (410) and a spline hub (420), the spline hub (420) being fixed to the flange (410); a diaphragm spring (500), the diaphragm spring (500) being disposed between the flange (410) and the second housing (220), and the inner periphery of the diaphragm spring (500) extending between the flange (410) and the spline hub (420); and A sealing ring (600) is provided between the diaphragm spring (500) and the spline hub (420).

2. The flywheel according to claim 1, wherein: The spline hub (420) and the diaphragm spring (500) are riveted to the flange (410) via rivets (700).

3. The flywheel according to claim 2, wherein: There are multiple rivets (700), and the multiple rivets (700) are evenly distributed in the circumferential direction.

4. The flywheel according to claim 3, characterized in that The sealing ring (600) is an annular sealing ring, and the outer periphery of the sealing ring (600) is located radially within the circumference of the plurality of rivets (700).

5. The flywheel according to claim 3, characterized in that The sealing ring (600) is an annular sealing ring, and the outer circumference of the sealing ring (600) radially exceeds the circumference of the plurality of rivets (700), and the sealing ring (600) is provided with avoidance holes for avoiding the rivets (700).

6. The flywheel according to claim 1, wherein: The sealing ring (600) is a rubber sealing ring.

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