CN218670406U

CN218670406U - Primary flywheel for dual-mass flywheel, dual-mass flywheel and vehicle

Info

Publication number: CN218670406U
Application number: CN202222896121.1U
Authority: CN
Inventors: 张艳洁
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-21
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses a elementary flywheel for dual mass flywheel, dual mass flywheel and vehicle, elementary flywheel include with bent axle fixed connection's main flywheel, set up the apron on main flywheel, form a cavity between main flywheel and apron, set up spring assembly and biography power board in the cavity, the tip and the spring assembly of biography power board contact and are connected, it sets up wheel hub to be close to apron one side at the biography power board, set up the sealing ring between apron and the wheel hub, the sealing ring includes first self-tightening structure and second self-tightening structure at least, the sealing ring realizes sealedly and realizes sealedly between second self-tightening structure and the wheel hub through realizing between first self-tightening structure and the apron. This disclosed embodiment is through setting up the sealing ring between apron and wheel hub, realizes sealed and realize sealed through second from between tight structure and the wheel hub between the first self-tightening structure of sealing ring and apron, simple structure, reliable operation guarantees the stability of dual mass flywheel when the super high pressure work, improves dual mass flywheel's life.

Description

Primary flywheel for dual-mass flywheel, dual-mass flywheel and vehicle

Technical Field

The disclosure relates to the technical field of flywheels for automobiles, in particular to a primary flywheel for a dual-mass flywheel, the dual-mass flywheel and a vehicle.

Background

On the market at present, for the travelling comfort that improves the vehicle, dual mass flywheel is adopted to more and more motorcycle types, dual mass flywheel generally arranges between the bent axle and the derailleur of engine, primary flywheel (first quality part) and the bent axle end connection of dual mass flywheel, secondary flywheel (second quality part) is connected with transmission system, set up elastic element between primary flywheel and secondary flywheel, the engine operation drives primary flywheel and rotates, transmit the moment of torsion to secondary flywheel through elastic element, thereby transmit the moment of torsion for transmission system. The torsional vibration of the crankshaft of the engine can be isolated from the gearbox by using the dual-mass flywheel, particularly the unbalance of a low-speed area can be filtered, the noise, vibration and Noise Vibration and Harshness (NVH) performance is improved, and the comfort is improved.

In prior art's dual mass flywheel, when the vehicle wades for a long time or wades into the water when the degree of depth is great, dual mass flywheel inevitable can get into moisture and dust etc to pollute dual mass flywheel's lubricating grease, make lubricating grease inefficacy, lead to the internal component to take place unusual wearing and tearing and produce abnormal sound easily, long this in the past, reduce dual mass flywheel's life-span. Through setting up dustproof gasket and sealed dish pad among the prior art to can be to a certain extent enough keep apart outside dual mass flywheel, avoided in external impurity gets into dual mass flywheel, thereby play certain dustproof guard action to dual mass flywheel, but in the in-service use process, it can't guarantee dual mass flywheel leakproofness under the complicated operating condition's the problem.

In addition, the dual mass flywheel is generally installed in the space that engine and gearbox casing are constituteed, and this space is narrow and small relatively, again because each spare part of dual mass flywheel is installed at the secondary side more for secondary side axial occupation space increases, is unfavorable for the increase of secondary flywheel mass inertia, makes the flywheel damping effect reduce, is unfavorable for promoting whole car noise, vibration and noise vibration roughness (NVH) performance.

Disclosure of Invention

In view of this, the present disclosure aims to provide a primary flywheel for a dual mass flywheel, a dual mass flywheel and a vehicle, so as to solve the technical problems in the prior art, such as poor internal sealing performance of the primary flywheel and small arrangement space of the secondary flywheel.

In one aspect, the present disclosure provides a primary flywheel for a dual mass flywheel, which includes a main flywheel fixedly connected to a crankshaft, a cover plate disposed on the main flywheel, and a gap between the main flywheel and the cover plate

Form a cavity set up spring assembly and biography power board in the cavity, the tip of biography power board with spring assembly contact is connected the biography power board is close to apron one side sets up wheel hub, the apron with set up the sealing ring between the wheel hub, the sealing ring includes first self-clinching structure and second self-clinching structure at least, the sealing ring passes through first self-clinching structure with realize sealed and pass through between the apron the second self-clinching structure with realize sealed between the wheel hub.

In some embodiments, the seal ring is sleeved on the hub, one side of the seal ring abuts against a shoulder of the hub, and the first self-tightening structure and the second self-tightening structure are arranged on the other side of the seal ring.

In some embodiments, a groove is provided on the inner diameter end of the cover plate, the first self-tightening structure is clamped in the groove, and the second self-tightening structure is clamped on the hub.

In some embodiments, the size of the first self-tightening structure in the radial direction is larger than that of the groove in the radial direction, the first self-tightening structure has a first protruding portion, the first protruding portion is annular and is sleeved on the groove, a first spring cavity is arranged on the first protruding portion, and a first coil spring is arranged in the first spring cavity.

In some embodiments, an outer diameter of an upper surface of the first self-tightening structure is greater than an outer diameter of an upper surface of the groove, and an inner diameter of a lower surface of the first self-tightening structure is configured to be less than an inner diameter of a lower surface of the groove.

In some embodiments, the inner diameter of the lower surface of the second self-tightening structure is smaller than the outer diameter of the hub, the second self-tightening structure includes a second boss on which a second spring cavity is disposed, and a second coil spring is disposed in the second spring cavity.

In some embodiments, a first tail is provided at an end of the first boss.

In some embodiments, a second tail is provided at an end of the second boss.

Another aspect of the disclosed embodiments provides a dual mass flywheel comprising a secondary flywheel and a primary flywheel as described in any one of the above.

Another aspect of the embodiments of the present disclosure provides a vehicle including an engine and a transmission, with the dual mass flywheel described above disposed between the engine and the transmission.

This disclosed embodiment is through setting up the sealing ring between apron and wheel hub, realize sealed and realize sealed through between second self-tightening structure and the wheel hub between the first self-tightening structure through the sealing ring and the apron, simple structure, the reliable operation can avoid the car to wade into water or wade into water the degree of depth when great for a long time, because intake and dust lead to polluting inside lubricating grease, guarantee the stability of dual mass flywheel during operation under the super high pressure, improve the life of dual mass flywheel.

Drawings

In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally by way of example and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are for providing further understanding of the disclosure and are incorporated in and constitute a part of this application, with the exemplary embodiments of the disclosure and the description thereof being given for the purpose of illustration and not limitation of the disclosure. In the drawings:

FIG. 1 is a sectional view of a primary flywheel of an embodiment of the present disclosure;

FIG. 2 is a partially enlarged schematic view of a primary flywheel according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional schematic view of a seal ring in a primary flywheel of an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a seal ring in a primary flywheel of an embodiment of the present disclosure;

fig. 5 is a top view of a primary flywheel according to an embodiment of the disclosure.

Wherein the figures include the following reference numerals:

1. a main flywheel; 2. A ring gear; 3. A cover plate; 4. A spring set; 5. A force transmission plate; 6. A hub; 7. A seal ring; 71. a first coil spring; 72. A first spring cavity; 73. a first tail portion; 74. a second coil spring; 75. A second spring cavity; 76. A second tail portion; 8. A groove; 9. a first boss portion; 10. A second boss portion; 11. A first self-tightening structure; 12. A second self-tightening structure.

Detailed description of the preferred embodiments

Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, but the present disclosure is not limited thereto.

It will be understood that various modifications may be made to the embodiments disclosed herein. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the disclosure.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

The present invention consists in the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings

These and other features of the disclosure will become apparent.

It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

The present disclosure is further described with reference to the following figures and specific examples.

A first embodiment of the present disclosure provides a primary flywheel for a dual mass flywheel, where the dual mass flywheel is disposed between an engine and a transmission of a vehicle for transferring torque between the engine and the transmission. Here, the primary flywheel is disposed at a position close to the engine side for receiving the torque from the engine and transmitting the torque to the secondary flywheel, as shown in fig. 1, and includes a main flywheel 1 fixedly connected to a crankshaft of the engine, and the main flywheel 1 can rotate together with the crankshaft when the engine is running. A cover plate 3 is arranged on the main flywheel 1, and a secondary flywheel of the dual mass flywheel can be arranged on the outer side of the cover plate 3, wherein the secondary flywheel is arranged on the transmission side close to the transmission system and used for improving the rotational inertia of the transmission.

Further, as shown in fig. 1 and 5, a gear ring 2 is disposed on an outer edge of the main flywheel 1, the gear ring 2 may be fixedly disposed on the main flywheel 1 by welding, for example, and the gear ring 2 is matched with a starter to start the starter in an idle state, specifically, the gear ring 2 is connected with an output shaft of the starter by a transmission component such as a gear, so as to transmit an output torque of the starter to the main flywheel 1, and the main flywheel 1 drives the crankshaft of the starter to rotate, so as to achieve an effect of starting the starter.

A cavity is formed between the main flywheel 1 and the cover plate 3, a spring set 4 and a force transmission plate 5 are arranged in the cavity, and the spring set 4 is arranged at a position close to two ends of the cavity; the force transmission plate 5 is arranged along the radial direction of the main flywheel 1, and the end part of the force transmission plate is in contact connection with the spring set 4, so that the spring set 4 transmits torque to the force transmission plate 5. Here, the cavity is filled with lubricating grease, which has excellent high-temperature, wear-resistant and noise-reducing properties by being filled with lubricating grease mainly considering that the force transmission plate 5 and the spring assembly 4 and the like are easily worn, and in addition, the lubricating grease has high viscosity and can overcome high-speed centrifugal force.

In a specific embodiment, the spring sets 4 may be arc-shaped spring sets, for example, two sets of the spring sets 4 may be respectively disposed at two ends in the cavity formed between the main flywheel 1 and the cover plate 3, and the two sets of the spring sets 4 may be connected in parallel by a dial, wherein each spring set 4 is formed by connecting two arc-shaped springs in parallel.

Further, a hub 6 is provided on the side of the force transmission plate 5 close to the cover plate 3, so that the torque is transmitted to the hub 6 through the force transmission plate 5 and finally transmitted to the secondary flywheel through the hub 6. This ensures that the primary flywheel is of a smaller length in the radial direction, so as to provide more space for the arrangement of the secondary gear.

In order to ensure that the force transmission plate 5 and the hub 6 can rotate coaxially, the force transmission plate 5 and the hub 6 are fixed on the inner side of the main flywheel 1 together through a mounting part, wherein the mounting part can be a mounting hole and a fastening part, for example, in practice, the mounting hole can be plugged by a plugging cap to be sealed, so that the sealing performance of the connecting position is improved.

Further, as shown in fig. 1 and 4, a sealing ring 7 is disposed between the cover plate 3 and the hub 6, the sealing ring 7 includes a first self-tightening structure 11 and a second self-tightening structure 12, the first self-tightening structure 11 and the second self-tightening structure 12 are respectively disposed at two ends of the sealing ring 7, wherein the sealing ring 7 is sleeved on the hub 8, the sealing ring 7 is sealed between the first self-tightening structure 11 and the cover plate 3, and the sealing ring is sealed between the second self-tightening structure 12 and the hub 6.

It should be noted that, when the primary flywheel is in ultra-high speed operation, the cavity is under medium pressure

The sealing ring 7 is used for realizing sealing between the cover plate 3 and the hub 6 in the cavity, so that the risk of damage to the sealing surface is reduced, the sealing effect of the primary flywheel is improved, and the stability of the primary flywheel during working under ultrahigh pressure is ensured.

Further, as shown in fig. 2, the sealing ring 7 abuts against a shoulder of the hub 6 on a side close to the dowel plate 5, and the first self-tightening structure 11 and the second self-tightening structure 12 are disposed on the other side of the sealing ring 7 close to the cover plate 3. A groove 8 is formed in the inner diameter end of the cover plate 3, the first self-tightening structure 11 is clamped in the groove 8, and the fact that dust or water easily enters the groove 8 in the operation process of the primary gear is considered, so that the grease quality and consistency are changed; it is necessary here that the dimension of the first self-tightening structure 11 in the radial direction in the free state is larger than the dimension of the groove 8 in the radial direction, and for this reason, the inner diameter of the lower surface of the first self-tightening structure 11 is set smaller than the inner diameter of the lower surface of the groove 8, while the outer diameter of the upper surface of the first self-tightening structure 11 is set larger than the outer diameter of the upper surface of the groove 8, which facilitates the fitting and sealing of the first self-tightening structure 11 in the groove 8.

Like this, under first self-clinching structure 11 is in free state, interference fit between the lower surface of first self-clinching structure 11 and the lower surface of recess 8, the upper surface of first self-clinching structure 11 with also can be interference fit between the upper surface of recess 8, work as first self-clinching structure 11 is adorned behind the recess 8, the pressure of its upper and lower surface is right recess 8 produces certain radial tension, thereby reaches sealed effect.

Further, as shown in fig. 3, the first self-tightening structure 11 has a first protruding portion 9, the first protruding portion 8 is annular and is sleeved in the groove 8, a first spring cavity 72 is disposed on the first protruding portion 9, a first coil spring 71 is disposed in the first spring cavity 72, where the first coil spring 71 is used for providing a contraction force to raise a radial tightening force of the first self-tightening structure 11 on the groove 8, and in a case that the radial tightening force is reduced after a period of time, the first coil spring 71 here can compensate the self-tightening force at any time, so as to avoid the sealing ring 7 from failing in an operating state; meanwhile, the sealing surface can be automatically adjusted at any time according to the stress condition, the risk of damage to the sealing surface is reduced, the sealing effect is improved, and the stability of the primary flywheel during working under ultrahigh pressure can be ensured due to the simple structure and the reliable working.

In addition, through second self-tightening structure 12 realize with sealed between the wheel hub 6, the internal diameter of the lower surface of second self-tightening structure 12 is less than wheel hub 6's external diameter, reach with wheel hub 6's contact surface realizes interference fit's effect.

Further, in addition, the second self-tightening structure 12 is clamped on the hub 8, specifically, the second self-tightening structure 12 includes a second protrusion portion 10, a second spring cavity 75 is disposed on the second protrusion portion 10, and a second helical spring 74 is disposed in the second spring cavity 75. The second self-tightening structure 12 generates a certain radial tightening force on the hub 6 due to the pressure on the end face of the hub 6 and the contraction force of the second spiral spring 74, so that a sealing effect can be achieved, and when the pressure is reduced, the second spiral spring 74 can compensate the self-tightening force of the sealing ring 7 at any time, so that the sealing effect is automatically restored.

Further, a first tail portion 73 is provided at an end portion of the first projecting portion 9, and a second tail portion 76 is provided at an end portion of the second projecting portion 10, so that the first coil spring 71 and the second coil spring 74 are prevented from falling off, respectively.

The first self-tightening structure 11 and the second self-tightening structure 12 are respectively and independently sealed with different parts in the primary flywheel, and the first self-tightening structure 11 and the second self-tightening structure 12 further enhance the pressing force through the contraction force provided by the first spiral spring 71 and the second spiral spring 74 on the basis of the radial force generated by the self pressure, and can also compensate the self-tightening force when the pressing force is reduced, so that the sealing performance in the primary flywheel under the working state is greatly improved, and the sealing effect is repaired at any time. Of course, the number of self-tightening structures can be increased and the positions of the self-tightening structures can be adjusted according to the actual structure inside the primary gear, so that the pressing force is provided from more angles, and the sealing performance and the wading capacity of the vehicle during wading are further improved.

A second embodiment of the present disclosure provides a dual mass flywheel, provided between an engine and a transmission of a vehicle, for transmitting torque between the engine and the transmission, including the primary flywheel of the first embodiment described above, provided here at a position close to an engine side for receiving torque from the engine and transmitting torque to the secondary flywheel, and the secondary flywheel provided at a transmission side close to a power train for increasing rotational inertia of the transmission.

A third embodiment of the present disclosure provides a vehicle including an engine and a transmission, and further including the dual mass flywheel referred to in the second embodiment above, where the dual mass flywheel is disposed between the engine and the transmission.

The number of the embodiment of the present invention is only for the description, and does not represent the merits of the embodiment.

In the above embodiments of the present invention, the descriptions of the embodiments have their respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "over" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally herein. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the disclosure to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a elementary flywheel for dual mass flywheel, its include with bent axle fixed connection's main flywheel set up the apron on the main flywheel with form a cavity between the apron set up spring assembly and biography power board in the cavity, the tip of biography power board with spring assembly contacts and connects the biography power board is close to apron one side sets up wheel hub, a serial communication port, the apron with set up the sealing ring between the wheel hub, the sealing ring includes first self-tightening structure and second self-tightening structure at least, the sealing ring passes through first self-tightening structure with realize sealed and pass through between the apron the second self-tightening structure with realize sealed between the wheel hub.

2. The primary flywheel of claim 1 wherein the seal ring is sleeved on the hub, one side of the seal ring abuts against a shoulder of the hub, and the first and second self-tightening structures are disposed on the other side of the seal ring.

3. The primary flywheel of claim 1 wherein a recess is provided in the inner diameter end of the cover plate, the first self-tightening structure being snap-fitted into the recess and the second self-tightening structure being snap-fitted onto the hub.

4. The primary flywheel of claim 3 wherein the first self-tightening structure has a radial dimension greater than a radial dimension of the groove, the first self-tightening structure has a first boss that is annular and sleeved on the groove, a first spring cavity is disposed on the first boss, and a first coil spring is disposed in the first spring cavity.

5. The primary flywheel of claim 3 wherein an outer diameter of the upper surface of the first self-tightening structure is greater than an outer diameter of the upper surface of the groove, and an inner diameter of the lower surface of the first self-tightening structure is configured to be less than an inner diameter of the lower surface of the groove.

6. The primary flywheel of claim 1 wherein the inner diameter of the lower surface of the second self-tightening structure is smaller than the outer diameter of the hub, the second self-tightening structure including a second boss on which a second spring cavity is disposed, a second coil spring being disposed in the second spring cavity.

7. The primary flywheel of claim 4 wherein a first tail is provided at the end of the first boss.

8. The primary flywheel of claim 6 wherein a second tail is provided at the end of the second boss.

9. A dual mass flywheel comprising a secondary flywheel and a primary flywheel as claimed in any one of claims 1 to 8.

10. A vehicle comprising an engine and a transmission, characterized in that the dual mass flywheel of claim 9 is provided between the engine and the transmission.