Dual-mass flywheel

Abstract

The utility model discloses a dual-mass flywheel, which belongs to the technical field of automobile parts and comprises a primary flywheel component and a secondary flywheel component. The primary flywheel assembly comprises a front shell used for being connected with an engine crankshaft; the gear ring is mounted on the front shell; the rear shell is matched with the front shell to form an accommodating space; the at least one elastic element is arranged in the accommodating space and is used for absorbing torsional vibration of the engine; the secondary flywheel assembly comprises at least one force transmission plate used for transmitting torque; a sealing element for sealing the secondary flywheel assembly; the inertia disc is used for increasing the rotational inertia of the secondary flywheel assembly; the group of force transmission sheets are distributed up and down and are used for transmitting torque and are connected with the inertia disc; the at least one connecting element is used for connecting various components of the secondary flywheel assembly; according to the design, a force transmission piece part structure is added, the product structure can be flexibly arranged according to the space, and the production cost of the spline plate can be greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive component technology, and in particular relates to a dual-mass flywheel. Background Technology

[0002] A dual-mass flywheel (DMF) is a mechanical structure used in automotive powertrain systems. Its primary function is to isolate torsional vibrations from the engine crankshaft, thereby improving vehicle comfort and transmission system reliability. A dual-mass flywheel is essentially a flywheel divided into two parts: one part remains on the engine side, functioning as the original flywheel for starting and transmitting engine torque; this part is called the primary flywheel assembly. The other part is located on the transmission side of the drivetrain, used to increase the transmission's moment of inertia; this part is called the secondary flywheel assembly.

[0003] However, in existing technologies, multiple inertia disks are typically riveted together to increase the rotational inertia of the secondary flywheel assembly; but this structure has the following problems:

[0004] 1. Space constraints: The riveting of multiple inertia disks requires a large space, while space is often very limited in automotive powertrain systems, which increases the difficulty of designing and arranging dual-mass flywheels.

[0005] Second, increased production costs: The riveting process requires additional processing steps and materials, which increases production costs and complexity.

[0006] To address the shortcomings of existing technologies, this invention provides a dual-mass flywheel, aiming to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a dual-mass flywheel with an added force transmission plate structure, which can flexibly arrange the product structure according to space and greatly reduce the production cost of the keyboard.

[0008] To achieve the above objectives, this utility model employs the following technical solution:

[0009] A dual-mass flywheel, comprising:

[0010] The primary flywheel assembly is connected to the engine crankshaft, and the secondary flywheel assembly is connected to the gearbox; among which,

[0011] The primary flywheel assembly includes:

[0012] The front housing is used to connect to the engine crankshaft;

[0013] A gear ring, mounted on the front housing, is used to mesh with the starter gear;

[0014] The rear housing, in conjunction with the front housing, forms an accommodating space;

[0015] At least one elastic element is disposed within the receiving space for absorbing the torsional vibration of the engine;

[0016] The secondary flywheel assembly includes:

[0017] At least one force-transmitting plate is used to transmit torque;

[0018] At least one connecting element for connecting the various components of the secondary flywheel assembly;

[0019] At least one inertia disk is used to increase the rotational inertia of the secondary flywheel assembly;

[0020] A set of vertically distributed force transmission plates are connected to the force transmission plate via connecting elements, used to transmit torque and connect to the inertia disk;

[0021] A sealing element for sealing the secondary flywheel assembly.

[0022] Preferably, it also includes a decorative keyboard, which is disposed between the vertically distributed force transmission plates via connecting elements.

[0023] Preferably, the elastic element is a pair of arc-shaped springs.

[0024] Preferably, the sealing element includes a sealing ring and a sealing disc gasket.

[0025] Preferably, the connecting element is a rivet.

[0026] Preferably, the inertial disk includes an upper inertial disk and a lower inertial disk; both the upper and lower inertial disks are riveted to the force transmission plate.

[0027] Preferably, the force transmission plate is made of steel.

[0028] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0029] 1. By adding a force transmission plate component structure, this utility model can flexibly arrange the product structure of the dual-mass flywheel according to the limited space in the automotive power transmission system, solving the problem of difficult space arrangement caused by riveting multiple inertial discs in the prior art; at the same time, it reduces the additional processing steps and materials required for riveting multiple inertial discs, reducing production costs and process complexity, while simplifying the structure of the keypad, further reducing production costs. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the structure of this utility model.

[0031] Figure 2 This is a top view of the present invention.

[0032] Figure 3 This is a first-view sectional view of the present invention.

[0033] Figure 4 This is a cross-sectional view of the present invention from a second perspective.

[0034] in:

[0035] 1. Primary flywheel assembly; 12. Front housing; 13. Ring gear; 14. Rear housing; 15. Curved spring;

[0036] 2. Secondary flywheel assembly; 21. Force transmission plate; 22. Sealing ring; 23. Sealing disc gasket; 24. Rivet; 25. Keyboard; 26. Upper inertia plate; 27. Lower inertia plate; 28. Force transmission plate. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0038] In the description of this utility model, it should be understood that the terms "middle," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable 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 this utility model based on the specific circumstances.

[0040] Example 1

[0041] refer to Figures 1-4 This embodiment provides a dual-mass flywheel, comprising:

[0042] A primary flywheel assembly 1 connected to the engine crankshaft and a secondary flywheel assembly 2 connected to the gearbox; wherein,

[0043] The primary flywheel assembly 1 includes:

[0044] Front housing 12, for connection to engine crankshaft;

[0045] The gear ring 13 is mounted on the front housing 12 and is used to mesh with the starter gear to ensure smooth engine starting and vehicle starting performance.

[0046] The rear housing 14 cooperates with the front housing 12 to form a receiving space; it provides an installation position and protection for components such as elastic elements, prevents dust and impurities from entering, extends the service life of components, and improves the reliability of the system.

[0047] At least one elastic element is disposed within the receiving space for absorbing the torsional vibration of the engine;

[0048] Specifically, the elastic element is a pair of arc-shaped springs 15.

[0049] The secondary flywheel assembly 2 includes:

[0050] At least one force transmission plate 21 is used to transmit torque; to ensure that the secondary flywheel assembly 2 can smoothly transmit the damped torque to the gearbox, ensuring the continuity and stability of power transmission.

[0051] A sealing element is used to seal the secondary flywheel assembly 2; to prevent lubricating oil leakage and to prevent external impurities from entering, thereby ensuring the normal operation of the internal components of the secondary flywheel assembly 2.

[0052] Specifically, the sealing element includes a sealing ring 22 and a sealing disc gasket 23; the sealing ring 22 is located inside the arc spring 15, and the sealing disc gasket 23 is located inside the sealing ring 22.

[0053] At least one inertia disk is used to increase the rotational inertia of the secondary flywheel assembly 2;

[0054] A set of vertically distributed force transmission plates 28 are connected to the force transmission plate 21 via connecting elements, and are used to transmit torque and connect to the inertia disk.

[0055] Specifically, the material of the force transmission plate 28 is steel;

[0056] At least one connecting element for connecting the various components of the secondary flywheel assembly 2;

[0057] Specifically, the connecting element is a rivet 24.

[0058] It should be noted that in this embodiment, a set of vertically distributed force transmission plates 28 are used to transmit torque and connect the inertia disk. They are made of steel, which has high strength and good wear resistance, and can withstand large torque and frequent start-stop conditions, thus extending the service life of the components. At the same time, the arrangement of the force transmission plates 28 can flexibly arrange the product structure according to the space, improving the design flexibility and adaptability of the dual-mass flywheel.

[0059] Furthermore, it also includes a decorative keyboard 25, which is disposed between the vertically distributed force transmission plates 28 via connecting elements.

[0060] In this embodiment, the keypad 25 is connected between the vertically distributed force transmission plates 28 via connecting elements, which can further optimize the torque transmission path and improve torque transmission efficiency. At the same time, this structure can greatly reduce the production cost of the keypad 25, simplify the production process, improve production efficiency, and overcome the problems of space arrangement limitations and increased production costs caused by riveting multiple inertial discs in the prior art.

[0061] Furthermore, the inertial disk includes an upper inertial disk 26 and a lower inertial disk 27; both the upper inertial disk 26 and the lower inertial disk 27 are riveted to the force transmission plate 28.

[0062] In this embodiment, by adding the force transmission plate 28 component structure, the present invention can flexibly arrange the product structure of the dual-mass flywheel according to the limited space in the automotive power transmission system, solving the problem of the difficulty in space arrangement caused by the riveting of multiple inertial discs in the prior art; at the same time, it reduces the additional processing steps and materials required for riveting multiple inertial discs, reduces production costs and process complexity, and simplifies the structure of the keypad 25, further reducing production costs.

[0063] Working principle: The primary flywheel assembly 1 transmits torque to the secondary flywheel assembly 2 through the arc spring 15. During the operation of the secondary flywheel assembly 2, the force transmission plate 21 receives the torque transmitted by the arc spring 15 and transmits it to the inertia disk (including the upper inertia disk 26 and the lower inertia disk 27) through the riveting relationship. Then, the inertia disk transmits the torque to the force transmission plate 28 through the riveting relationship, and then indirectly transmits it to the spline key 25. Finally, the torque is transmitted to the gearbox input shaft through the spline inside the spline key 25, thus realizing the final transmission of torque.

[0064] In summary, by combining the above structures, this utility model increases the structure of the force transmission plate 28, which allows for flexible arrangement of the product structure according to space, and can also greatly reduce the production cost of the keyboard 25.

[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dual-mass flywheel, characterized in that, include: A primary flywheel assembly (1) connected to the engine crankshaft and a secondary flywheel assembly (2) connected to the gearbox; wherein, The primary flywheel assembly (1) includes: Front housing (12) for connection to engine crankshaft; A gear ring (13) is mounted on the front housing (12) for meshing with a starter gear; The rear housing (14) cooperates with the front housing (12) to form an accommodating space; At least one elastic element is disposed within the receiving space for absorbing the torsional vibration of the engine; The secondary flywheel assembly (2) includes: At least one force-transmitting plate (21) is used to transmit torque; At least one connecting element for connecting the various components of the secondary flywheel assembly (2); At least one inertia disk is used to increase the rotational inertia of the secondary flywheel assembly (2); A set of vertically distributed force transmission plates (28) are connected to the force transmission plate (21) through connecting elements, and are used to transmit torque and connect the inertial disk; A sealing element for sealing the secondary flywheel assembly (2).

2. The dual-mass flywheel according to claim 1, characterized in that, It also includes a decorative keyboard (25), which is disposed between the vertically distributed force transmission plates (28) via connecting elements.

3. The dual-mass flywheel according to claim 1, characterized in that, The elastic element is a pair of arc springs (15).

4. The dual-mass flywheel according to claim 1, characterized in that, The sealing element includes a sealing ring (22) and a sealing disc gasket (23).

5. The dual-mass flywheel according to claim 2, characterized in that, The connecting element is a rivet (24).

6. The dual-mass flywheel according to claim 5, characterized in that, The inertial disk includes an upper inertial disk (26) and a lower inertial disk (27); both the upper inertial disk (26) and the lower inertial disk (27) are riveted to the force transmission plate (28).

7. The dual-mass flywheel according to claim 1, characterized in that, The force transmission plate (28) is made of steel.

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