WO2025050337A1 - Torque transmission device and vehicle transmission system - Google Patents

Abstract

A torque transmission device and a vehicle transmission system. The torque transmission device comprises: a flywheel body (11); a hub (12), which can rotate relative to the flywheel body and is arranged coaxially with the flywheel body; and a sealing ring (13), which is arranged between the hub and the flywheel body, wherein a first friction ring (14) is provided on the side of the hub that faces the flywheel body; a second friction ring (15) is provided on the side of the flywheel body that faces the hub; the first friction ring and the second friction ring maintain a clamping force on the sealing ring; and the sealing ring is in surface contact with both the first friction ring and the second friction ring. The sealing ring is made to be in surface contact with the first friction ring and the second friction ring, such that a better waterproofing effect can be provided.

Description

Torque transmission device and vehicle transmission system Technical Field

The present invention relates to the technical field of vehicle transmission, and in particular to a torque transmission device and a vehicle transmission system.

Background Art

With the development of automobile technology and the popularization of users, automobiles play an increasingly important role in people's daily lives, which has prompted people to have higher and higher requirements for various performances of automobiles. In particular, the requirements for waterproofing of various parts of vehicles have been greatly improved.

The current vehicle transmission system is equipped with a torque transfer device, such as a shock absorber, to reduce the torsional vibration from the engine to the gearbox. There is a gap between the flywheel body and the wheel hub of the shock absorber. In order to prevent external water from entering the interior of the shock absorber through the gap between the flywheel body and the wheel hub, in the shock absorber of the current design, a sealing spring sheet is provided in the gap between the flywheel body and the wheel hub. However, since the sealing spring sheet and the flywheel body are both made of metal materials, and the contact between the two is a rigid line contact, the sealing effect is not good, and external water can easily enter the interior of the shock absorber through the gap between the sealing spring sheet and other components, thereby affecting the working performance of the shock absorber.

Summary of the invention

In order to solve the above technical problems, the present invention provides a torque transmission device and a vehicle transmission system.

The torque transmission device provided by the embodiment of the present invention comprises: a flywheel body; a wheel hub, which is relatively rotatable and coaxially arranged with the flywheel body; and a sealing ring, which is arranged between the wheel hub and the flywheel body. A first friction ring is arranged on the side of the wheel hub facing the flywheel body, and a second friction ring is arranged on the side of the flywheel body facing the wheel hub, the first friction ring and the second friction ring maintain a clamping force on the sealing ring, and the sealing ring is in surface contact with the first friction ring and the second friction ring respectively.

According to some embodiments of the present invention, the sealing ring is made of an elastic material, and the first friction ring and the second friction ring maintain a clamping force on the sealing ring to deform the sealing ring.

According to some embodiments of the present invention, the sealing ring is made of rubber material.

According to some embodiments of the present invention, the first friction ring includes a first friction ring radial portion extending in a radial direction toward the second friction ring, and a first friction ring axial portion extending in an axial direction toward the second friction ring. The second friction ring includes a second friction ring radial portion extending in a radial direction toward the first friction ring, and a second friction ring axial portion extending in an axial direction toward the first friction ring.

According to some embodiments of the present invention, the sealing ring is in surface contact with the first friction ring radial portion and the second friction ring radial portion respectively.

According to some embodiments of the present invention, the projection of the flywheel body and the hub in the axial direction partially overlap, and the radial portion of the first friction ring is fixedly arranged on a side of the hub that overlaps with the projection of the wheel body and faces the flywheel body.

According to some embodiments of the present invention, the flywheel body partially overlaps with the projection of the hub in the axial direction, and the second friction ring radial portion is fixedly disposed on a side of the flywheel body that overlaps with the projection of the hub and faces the hub.

According to some embodiments of the present invention, the first friction ring and the second friction ring are made of plastic material.

According to some embodiments of the present invention, the first friction ring radial portion and the first friction ring axial portion are integrally formed; and the second friction ring radial portion and the second friction ring axial portion are integrally formed.

An embodiment of the present invention also provides a vehicle transmission system, comprising a torque transfer device, an engine and a gearbox according to any one of the above embodiments; one axial end of the torque transfer device is connected to the engine, and the other axial end of the torque transfer device is connected to the gearbox.

In the field of vehicle transmission technology, the present invention provides a torque transmission device and a vehicle transmission system, by arranging a seal with elastic deformation between a first friction ring and a second friction ring The sealing ring is elastically deformed under the axial clamping force of the first friction ring and the second friction ring on the sealing ring, so that the sealing ring is in contact with the first friction ring and the second friction ring surface respectively, which can provide better sealing performance and enhance the waterproof effect, thereby ensuring the working performance of the dual-mass flywheel.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

FIG1 shows a schematic diagram of a vehicle transmission system according to an embodiment of the present invention; and

FIG. 2 shows a partial cross-sectional view of a torque transmission device according to an embodiment of the present invention.

It should be understood that the above drawings are merely schematic and are not drawn according to actual scale.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "include" or "comprises" and the like used in the embodiments of the present invention mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", etc. are only used with respect to the orientation of the components in the drawings. These directional terms are relative concepts. They are used for description and clarification with respect to the components, and they may change accordingly according to the change of the orientation of the components in the drawings.

The present invention aims to provide a torque transmission device, especially for a vehicle transmission system. The torque transmission device in the present invention is improved so that the contact between the sealing ring and other components of the torque transmission device is surface contact, so as to provide a better waterproof effect. The torque transmission device in the present invention can be, but is not limited to, a shock absorber, and can also be applied to other structures for torque transmission.

FIG1 shows a schematic diagram of a vehicle transmission system according to an embodiment of the present invention, and FIG2 shows a partial cross-sectional view of a torque transmission device according to an embodiment of the present invention. In some embodiments, the torque transmission device can be a shock absorber applied to a vehicle transmission system. In combination with FIGS. 1-2 , the vehicle transmission system includes a torque transmission device 1, an engine 2, and a gearbox 3. One axial end of the torque transmission device 1 is connected to the engine 2, and the other axial end of the torque transmission device 1 is connected to the gearbox 3.

Specifically, the torque transmission device 1 includes a flywheel body 11 and a wheel hub 12, and the flywheel body 11 and the wheel hub 12 are basically coaxially arranged. The flywheel body 11 and the wheel hub 12 can be made of a metal material with a certain rigidity. The flywheel body 11 includes a first flywheel housing 11a and a second flywheel housing 11b arranged along the axial direction A. As shown in FIG2 , in the axial direction A, the right half of the flywheel body 11 in the figure is the first flywheel housing 11a, and the left half is the second flywheel housing 11b. The first flywheel housing 11a and the second flywheel housing 11b are coaxially covered to form a flywheel body 11 with a cavity structure. An elastic damping element 16 is arranged in the cavity between the first flywheel housing 11a and the second flywheel housing 11b to play a role in transmitting torque and damping between the engine 2 and the gearbox 3.

Further, the wheel hub 12 is coaxial with the flywheel body 11 and can rotate relatively. Optionally, as shown in Fig. 1-2, the wheel hub 12 is connected to the first flywheel housing 11a through a sealing ring 13 so as to be relatively rotatable; the second flywheel housing 11b is connected to the engine 2 in a cooperative manner, and the wheel hub 12 is connected to the gearbox 3 in a cooperative manner. In the working state, the engine 2 drives the flywheel body 11 to rotate, and the flywheel body 11 transmits the torque to the rigid connection parts of the interior and the wheel hub 12 through the elastic vibration damping element 16, and finally transmits the torque of the engine 2 to the gearbox 3.

In some optional embodiments, the torque transmission device includes: a flywheel body 11, a wheel hub 12 and a sealing ring 13. The sealing ring 13 is arranged between the wheel hub 12 and the flywheel body 11. A first friction ring 14 is arranged on the side of the wheel hub 12 facing the flywheel body 11, and the first friction ring 14 and the flywheel body 11 maintain a clamping force on the sealing ring 13. The sealing ring 13 is in surface contact with the first friction ring 14 and the flywheel body 11 respectively.

In some embodiments, as shown in FIG. 2 , the first flywheel housing 11a of the flywheel body 11 partially overlaps with the wheel hub 12 in the axial direction A. An annular slit space is formed between the first flywheel housing 11a and the wheel hub 12. The first friction ring 14 may be disposed on a portion of the wheel hub 12 that faces the flywheel body 11 and overlaps with the first flywheel housing 11a in the axial direction A. The sealing ring 13 is located in the slit space between the first friction ring 14 and the flywheel body 11. The first friction ring 14 and the first flywheel housing 11a maintain a clamping force on the sealing ring 13 in the axial direction A. Under the action of the clamping force, the sealing ring 13 is in surface contact with the first friction ring 14 and the first flywheel housing 11a, respectively.

In some optional embodiments, a second friction ring 15 is provided on the side of the flywheel body 11 facing the hub 12. The first friction ring 14 and the second friction ring 15 maintain a clamping force on the sealing ring 13, and the sealing ring 13 is in surface contact with the first friction ring 14 and the second friction ring 15 respectively.

Specifically, as shown in FIG. 2 , in some embodiments, the first flywheel housing 11a of the flywheel body 11 partially overlaps the wheel hub 12 in the axial direction A. An annular slit space is formed between the first flywheel housing 11a and the wheel hub 12. The second friction ring 15 can be arranged on the portion of the first flywheel housing 11a facing the wheel hub 12 and overlapping with the wheel hub 12 in the axial direction A. The sealing ring 13 is located in the slit space between the first friction ring 14 and the second friction ring 15. The first friction ring 14 and the second friction ring 15 maintain a clamping force on the sealing ring 13 in the axial direction A. Under the action of the clamping force, the sealing ring 13 is in surface contact with the first friction ring 14 and the second friction ring 15, respectively.

In some optional embodiments, the sealing ring 13 is made of an elastic material, for example, the sealing ring 15 can be made of a rubber material. The first friction ring 14 and the second friction ring 15 maintain a clamping force on the sealing ring 13 to deform the sealing ring 13, so that the sealing ring 13 is in closer contact with the first friction ring 14 and the second friction ring 15, respectively, and the waterproof effect is better.

Optionally, the cross section of the elastically deformable sealing ring 13 may be, for example, circular. Under the action of the clamping force, the contact surface between the sealing ring 13 and the first friction ring 14 and the second friction ring 15 is deformed to form surface contact. Of course, the cross section of the sealing ring 13 can also be other shapes, which are not limited here.

In some optional embodiments, the first friction ring 14 and the second friction ring 15 can be made of plastic material, so that the elastic sealing ring 13 is in non-rigid contact with the first friction ring 14 and the second friction ring 15 made of plastic, which can achieve better sealing effect and thus improve the waterproof performance.

In some optional embodiments, the first friction ring 14 includes a first friction ring radial portion 141 extending toward the second friction ring 15 along the radial direction R, and a first friction ring axial portion 142 extending toward the second friction ring 15 along the axial direction A. The second friction ring 15 includes a second friction ring radial portion 151 extending toward the first friction ring 14 along the radial direction R, and a second friction ring axial portion 152 extending toward the first friction ring 14 along the axial direction A. Under the action of the clamping force in the axial direction A, the sealing ring 13 is in surface contact with the first friction ring radial portion 141 and the second friction ring radial portion 151, respectively. In this way, the first friction ring 14 and the second friction ring 15 substantially enclose the slit space, which can effectively prevent water outside the torque transmission device 1 from entering the internal space, and further improve the waterproof effect of the torque transmission device 1.

Optionally, the flywheel body 11 and the wheel hub 12 partially overlap in the projection of the axial direction A. The first friction ring radial portion 141 is fixedly arranged on the side of the wheel hub 12 that overlaps with the projection of the wheel body 11 and faces the flywheel body 11, and the first friction ring axial portion 142 extends from a radial end of the first friction ring radial portion 141 away from the second friction ring axial portion 152 toward the wheel hub 12 along the axial direction A. The second friction ring radial portion 151 is fixedly arranged on the side of the flywheel body 11 that overlaps with the projection of the wheel hub 12 and faces the wheel hub 12, and the second friction ring axial portion 152 extends from a radial end of the second friction ring radial portion 151 away from the first friction ring axial portion 142 toward the flywheel body 11 along the axial direction A.

In some optional embodiments, the first friction ring radial portion 141 and the first friction ring axial portion 142 may be integrally formed, for example, by molding; the second friction ring radial portion 151 and the second friction ring axial portion 152 may be integrally formed, for example, by molding.

An embodiment of the present invention further provides a vehicle transmission system, comprising a torque transmission device 1 as described in any one of the above embodiments, an engine 2, and a gearbox 3. One axial end of the torque transmission device 1 is connected to the engine 2, and the other axial end of the torque transmission device 1 is connected to the gearbox 3.

It should be understood that the shape, structure, quantity and installation method of the sealing ring 13, the first friction ring 14 and the second friction ring 15 in the technical solution of the present invention can be changed in various ways and are not limited to the types described in the embodiment and shown in the drawings.

In addition, the application of the torque transfer device, especially its sealing structure, to the vehicle transmission system in the present invention is only exemplary, and the torque transfer device can also be applied to other structures in the vehicle transmission system, and used in structures of transmission systems other than the vehicle transmission system.

Although possible embodiments are described exemplarily in the above description, it should be understood that there are still a large number of variations of embodiments through all known and other technical features and embodiments that can be easily thought of by the skilled person. It should also be understood that the exemplary embodiments are only examples, and such embodiments do not limit the scope of protection, application and construction of the present invention in any form. The above description is more to provide a technical guide for converting at least one exemplary embodiment to the skilled person, wherein various changes can be made, especially changes in the functions and structures of the components, as long as they do not depart from the scope of protection of the claims.

Reference numerals

1. Torque transmission device; 11. Flywheel body; 11a. First flywheel housing; 11b Second flywheel housing; 12. Wheel hub; 13. Sealing ring; 14. First friction ring; 141. First friction ring radial portion; 142. First friction ring axial portion; 15. Second friction ring; 151. Second friction ring radial portion; 152. Second friction ring axial portion; 16. Elastic vibration damping element; 2. Engine; 3. Gearbox.

Claims (10)

A torque transmission device, characterized by comprising: Flywheel body (11); a wheel hub (12) which is relatively rotatable and coaxially arranged with the flywheel body (11); and A sealing ring (13) disposed between the hub (12) and the flywheel body (11); A first friction ring (14) is arranged on the side of the hub (12) facing the flywheel body (11), and a second friction ring (15) is arranged on the side of the flywheel body (11) facing the hub (12). The first friction ring (14) and the second friction ring (15) maintain a clamping force on the sealing ring (13), and the sealing ring (13) is in surface contact with the first friction ring (14) and the second friction ring (15), respectively. The torque transmission device according to claim 1 is characterized in that the sealing ring (13) is made of elastic material, and the first friction ring (14) and the second friction ring (15) maintain a clamping force on the sealing ring (13) to deform the sealing ring (13). The torque transmission device according to claim 2, characterized in that the sealing ring (13) is made of rubber material. The torque transmission device according to claim 1, characterized in that: The first friction ring (14) comprises a first friction ring radial portion (141) extending in a radial direction (R) toward the second friction ring (15), and a first friction ring axial portion (142) extending in an axial direction (A) toward the second friction ring (15); The second friction ring (15) comprises a second friction ring radial portion (151) extending in a radial direction (R) toward the first friction ring (14), and a second friction ring axial portion (152) extending in an axial direction (A) toward the first friction ring (14). The torque transmission device according to claim 4, characterized in that: The sealing ring (13) is in surface contact with the first friction ring radial portion (141) and the second friction ring radial portion (151) respectively. The torque transmission device according to claim 4 is characterized in that the projection of the flywheel body (11) and the wheel hub (12) in the axial direction (A) overlap, and the first friction ring radial portion (141) is fixedly arranged on the side of the wheel hub (12) that overlaps with the projection of the wheel body (11) and faces the flywheel body (11). The torque transmission device according to claim 4 is characterized in that the projection of the flywheel body (11) and the wheel hub (12) in the axial direction (A) overlap, and the second friction ring radial portion (151) is fixedly arranged on the side of the flywheel body (11) that overlaps with the projection of the wheel hub (12) and faces the wheel hub (12). The torque transmission device according to claim 1, characterized in that the first friction ring (14) and the second friction ring (15) are made of plastic material. The torque transmission device according to claim 4 is characterized in that the first friction ring radial portion (141) and the first friction ring axial portion (142) are integrally formed; and the second friction ring radial portion (151) and the second friction ring axial portion (152) are integrally formed. A vehicle transmission system, comprising a torque transmission device (1) according to any one of claims 1 to 9, an engine (2) and a gearbox (3); one axial end of the torque transmission device (1) is cooperatively connected to the engine (2), and the other axial end of the torque transmission device (1) is cooperatively connected to the gearbox (3).