A dual-mass flywheel capable of axial limit

Abstract

The present invention provides a dual-mass flywheel capable of axial limit, comprising a primary flywheel, a secondary flywheel, and an elastic damping element; the primary flywheel and the secondary flywheel are coaxially connected, and the elastic damping element is arranged between the primary flywheel and the secondary flywheel; the secondary flywheel comprises a shift fork, a limit gasket, and an auxiliary flywheel; the side of the secondary flywheel away from the primary flywheel is the auxiliary flywheel, and the side close to the primary flywheel is the limit gasket, and the shift fork is arranged between the auxiliary flywheel and the limit gasket; the shift fork, the limit gasket, and the auxiliary flywheel are riveted together. When axial vibration is transmitted to the secondary flywheel via the primary flywheel, the axial vibration is transmitted to the elastic damping element located between the primary flywheel and the secondary flywheel, and the elastic damping element generates elastic deformation in the axial direction to absorb the axial vibration. At the same time, the secondary flywheel is riveted into a whole, which can more effectively prevent the axial vibration from continuing to be transmitted to the secondary flywheel, avoid the axial movement of the secondary flywheel, and eliminate abnormal noise.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, in particular to a dual-mass flywheel capable of axially limiting position. Background Art

[0002] The dual-mass flywheel consists of a primary flywheel and a secondary flywheel. The main flywheel body and the cover plate in the primary flywheel are welded to form a circular cavity with an arc spring inside. The engine torque is transmitted from the crankshaft input to the primary flywheel main flywheel body. The main flywheel body compresses the arc spring, which is then transmitted to the secondary flywheel by the arc spring. The arc spring can absorb the rotational vibration generated by the power transmission system but cannot absorb the axial vibration caused by the engine. The engine torque is transmitted to the clutch damper or gearbox. When the engine is running, the torque input fluctuates. In addition, the vibration of the whole vehicle during driving will cause the axial movement of the secondary flywheel. When the gear movement is large, it will interfere with the primary flywheel or gearbox and produce abnormal noise. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a dual-mass flywheel capable of axial limit, characterized in that it comprises: a primary flywheel, a secondary flywheel, and an elastic damping element;

[0004] The primary flywheel and the secondary flywheel are coaxially connected, and the secondary flywheel can rotate in a coaxial direction relative to the primary flywheel;

[0005] The elastic damping element is arranged between the primary flywheel and the secondary flywheel, and can be elastically deformed in the axial direction of the dual mass flywheel;

[0006] The secondary flywheel includes a shift fork, a limit washer, and an auxiliary flywheel;

[0007] The side of the secondary flywheel away from the primary flywheel is an auxiliary flywheel, and the side close to the primary flywheel is a limiting gasket, and the shift fork is arranged between the auxiliary flywheel and the limiting gasket;

[0008] The shift fork, the limiting gasket and the auxiliary flywheel are riveted together.

[0009] Preferably, the elastic damping element comprises: a disc spring, a damping plate, and a stop damping plate;

[0010] The stop damping plate is pressed between the butterfly spring and the damping plate.

[0011] Preferably, the shift fork is provided with an inner notch;

[0012] A plurality of bosses extend from the outer circumferential surface of the damping plate, and the bosses cooperate with the inner notches of the shift fork.

[0013] Preferably, the primary flywheel comprises: a main flywheel body, a cover plate, an arc spring, and a flange seat;

[0014] The main flywheel body is connected to the cover plate to form a circular cavity;

[0015] The arc spring is placed in the cavity;

[0016] The main flywheel body and the flange seat are riveted together to form a U-shaped groove;

[0017] The elastic damping element is arranged in the U-shaped groove.

[0018] Preferably, the damping sheet is made of nylon material.

[0019] Preferably, the limiting gasket is made of spring steel.

[0020] The present invention provides a dual-mass flywheel with axial limit, comprising a primary flywheel, a secondary flywheel and an elastic damping element; the primary flywheel and the secondary flywheel are coaxially connected, and the secondary flywheel can rotate in a coaxial direction relative to the primary flywheel; the elastic damping element is arranged between the primary flywheel and the secondary flywheel, and can undergo elastic deformation in the axial direction of the dual-mass flywheel; the secondary flywheel comprises a shift fork, a limit gasket and an auxiliary flywheel; the side of the secondary flywheel away from the primary flywheel is the auxiliary flywheel, and the side close to the primary flywheel is the limit gasket, and the shift fork is arranged between the auxiliary flywheel and the limit gasket; the shift fork, the limit gasket and the auxiliary flywheel are riveted together.

[0021] When axial vibration is transmitted to the secondary flywheel via the primary flywheel, the axial vibration is transmitted to the elastic damping element located between the primary flywheel and the secondary flywheel. The elastic damping element produces elastic deformation in the axial direction to absorb the axial vibration. At the same time, the secondary flywheel is riveted into a whole, which can more effectively prevent the axial vibration from continuing to be transmitted toward the secondary flywheel, thereby avoiding axial movement of the secondary flywheel and eliminating abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of an embodiment of the present invention;

[0023] Figure 2 for Figure 1 AA section view;

[0024] Figure 3 for Figure 2 Schematic diagram of the upper part;

[0025] Figure 4 for Figure 2 Schematic diagram of the lower half of ;

[0026] The figure includes: a ring gear 1; a main flywheel body 2; a cover plate 3; a shift fork 4; an arc spring 5; an auxiliary flywheel 6; a limit washer 7; a damping plate 8; a stop damping plate 9; a disc spring 10; a flange seat 11; a first rivet 12; and a second rivet 13. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The dual-mass flywheel is used between the automobile engine and the gearbox. Its main function is to transfer the engine torque to the gearbox and attenuate the torque fluctuation during operation.

[0029] like Figure 2 As shown, a dual-mass flywheel capable of axial limit, comprising: a primary flywheel, a secondary flywheel, and an elastic damping element. The primary flywheel is used to receive torque from the engine, and the secondary flywheel can be connected to a clutch damper or directly connected to a gearbox. The primary flywheel and the secondary flywheel are coaxially connected, and the secondary flywheel can rotate in a coaxial direction relative to the primary flywheel; the elastic damping element is arranged between the primary flywheel and the secondary flywheel, and can undergo elastic deformation in the axial direction of the dual-mass flywheel; the secondary flywheel comprises a shift fork 4, a limit washer 7, and an auxiliary flywheel 6; the side of the secondary flywheel away from the primary flywheel is the auxiliary flywheel 6, and the side close to the primary flywheel is the limit washer 7, and the shift fork 4 is arranged between the auxiliary flywheel 6 and the limit washer 7; the shift fork 4, the limit washer 7, and the auxiliary flywheel 6 are riveted together.

[0030] When the axial vibration is transmitted to the secondary flywheel via the primary flywheel, the axial vibration is transmitted to the elastic damping element located between the primary flywheel and the secondary flywheel. The elastic damping element produces elastic deformation in the axial direction to absorb the axial vibration. At the same time, the secondary flywheel is riveted into a whole by the second rivet 13, which can more effectively prevent the axial vibration from continuing to be transmitted toward the secondary flywheel, thereby avoiding axial movement of the secondary flywheel and eliminating the abnormal noise caused by it.

[0031] Further, such as Figure 2 As shown, the elastic damping element includes: a disc spring 10, a damping plate 8, and a stop damping plate 9. The stop damping plate 9 is pressed between the disc spring and the damping plate 8.

[0032] The disc spring 10 can provide an axial pressing force to axially press the primary flywheel and the secondary flywheel.

[0033] The damping sheet 8 is mainly used to reduce noise and vibration.

[0034] Further, such as Figure 1 As shown, the shift fork 4 is provided with an inner notch, and a plurality of bosses extend from the outer circle of the damping plate 8, and the bosses cooperate with the inner notch of the shift fork 4 to prevent the two from rotating relative to each other.

[0035] Among them, the inner hole of the limit washer 7 is smaller than the inner hole of the fork 4 so as to cover the boss of the damping plate 8. The disc spring 10 can provide axial pressure to press the stop damping plate 9, and the stop damping plate 9 presses the damping plate 8, which can prevent the damping plate 8 from axial movement while ensuring the rotation process of the damping plate 8. The outer circle of the damping plate 8 has multiple tongue-like bosses, and the boss surface is higher than its friction surface. The boss cooperates with the notch in the fork 4, and the thickness of the boss is the same as that of the fork 4. When the limit washer 7, the fork 4, and the auxiliary flywheel 6 are riveted together by rivets, the two sides of the boss of the damping plate 8 are pressed. At this time, along the axial direction of the dual-mass flywheel, the primary flywheel and the secondary flywheel form a whole, which more effectively avoids the axial movement of the secondary flywheel.

[0036] Further, such as Figure 2 As shown, the primary flywheel includes: a main flywheel body 2, a cover plate 3, an arc spring 5, and a flange seat 11.

[0037] A gear ring 1 is provided on the main flywheel body 2, and the main flywheel body 2 is connected to a cover plate 3, wherein the main flywheel body 2 and the cover plate 3 can be laser welded, and a circular cavity is formed between the main flywheel body 2 and the cover plate 3. An arc spring 5 is placed in the cavity for vibration reduction of the dual mass flywheel. The main flywheel body 2 and the flange seat 11 are riveted together by a first rivet 12 to form a U-shaped groove; an elastic damping element is arranged in the U-shaped groove, and the elastic damping element is a disc spring 10, a damping plate 8 and a stop damping plate 9, wherein the disc spring 10 can provide an axial pressing force.

[0038] Furthermore, the damping sheet 8 is made of nylon material.

[0039] Furthermore, the limiting gasket 7 is made of spring steel, such as 65Mn, with a material thickness of 0.5-1.0 mm, and has both good strength and certain toughness.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dual-mass flywheel capable of axial limit, characterized in that: include: Primary flywheel, secondary flywheel, elastic damping element; The primary flywheel and the secondary flywheel are coaxially connected, and the secondary flywheel can rotate relative to the primary flywheel; The elastic damping element is arranged between the primary flywheel and the secondary flywheel, and can be elastically deformed in the axial direction of the dual-mass flywheel. The elastic damping element comprises: a disc spring, a damping plate, and a stop damping plate; the stop damping plate is pressed between the disc spring and the damping plate; The secondary flywheel comprises a shift fork, a limit washer and an auxiliary flywheel, wherein the shift fork is provided with an inner notch; a plurality of bosses extend from the outer circumferential surface of the damping plate, and the bosses cooperate with the inner notch of the shift fork; the limit washer is made of spring steel; The side of the secondary flywheel away from the primary flywheel is the auxiliary flywheel, and the side close to the primary flywheel is a limiting gasket, and the shift fork is arranged between the auxiliary flywheel and the limiting gasket; The shift fork, the limit washer and the auxiliary flywheel are riveted together, and the two sides of the boss of the damping plate are pressed tightly, so that the primary flywheel and the secondary flywheel form a whole.

2. The dual-mass flywheel capable of axial position limiting according to claim 1, characterized in that: The primary flywheel comprises: a main flywheel body, a cover plate, an arc spring, and a flange seat; The main flywheel body is connected to the cover plate to form a circular cavity; The arc spring is placed in the cavity; The main flywheel body and the flange seat are riveted together to form a U-shaped groove; The elastic damping element is arranged in the U-shaped groove.

3. The dual-mass flywheel capable of axial position limiting according to claim 1 or 2, characterized in that: The damping sheet is made of nylon material.

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