Clutch flywheel arrangement

Abstract

The application discloses a clutch flywheel structure and belongs to the clutch flywheel field. The clutch flywheel structure comprises a flywheel body, the flywheel body has a first surface and a second surface, the first surface is provided with a wind guide assembly, the wind guide assembly is convex relative to the first surface plane, the wind guide assembly comprises a reinforcing ring extending around the flywheel body axis and a plurality of extension strips distributed in the circumferential direction around the flywheel body axis, a plurality of air inlet holes penetrating through the flywheel body are formed in the flywheel body, the number of the air inlet holes is consistent with that of the extension strips, a plurality of backflow holes penetrating through the flywheel body are also formed in the flywheel body, and a flow channel groove connecting the backflow holes and the air inlet holes is formed in the first surface. The application has the beneficial effect of providing a clutch flywheel structure, cold air is introduced into the inside of the air inlet hole and into the first surface side along with the rotation of the flywheel body through the extension strips, the cold air absorbs the heat generated by the friction of the friction plate in the flow channel groove, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This application relates to the field of clutch flywheels, and more specifically, to a clutch flywheel structure. Background Technology

[0002] The clutch, installed between the engine and transmission, is an assembly in the automotive drivetrain directly connected to the engine. Typically, the clutch is mounted together with the engine crankshaft flywheel, serving as the component that cuts off and transmits power between the engine and the drivetrain. The clutch disc, via the pressure plate of the clutch cover assembly, presses the clutch plates against the friction surfaces of the flywheel, creating clutch engagement (torque transmission state). Friction plates are usually installed on one side of the flywheel friction surface. The friction plates and clutch pressure plate are in a sealed environment, making heat dissipation difficult. Heat is transferred to the flywheel assembly via the friction surfaces, affecting the performance and reliability of the transmission system. Furthermore, because the friction plates are located on one side of the flywheel, a significant temperature difference between the two sides can easily occur, causing flywheel deformation.

[0003] Therefore, a clutch flywheel structure is needed to solve the above problems. Utility Model Content

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, some embodiments of this application provide a clutch flywheel structure, comprising: a flywheel body having a first surface and a second surface, a friction plate fixedly mounted on the second surface, a crankshaft hole formed at the center of the flywheel body, an engine crankshaft engaging with the crankshaft hole to drive the flywheel body to rotate, a gear ring mounted on the outer edge of the flywheel body, an air guide assembly provided on the first surface, the air guide assembly protruding from the first surface plane, the air guide assembly including a reinforcing ring extending around the axis of the flywheel body and multiple extension strips circumferentially distributed around the axis of the flywheel body, the extension strips being tangentially arranged to the reinforcing ring, multiple air inlets penetrating the flywheel body being formed on the flywheel body, the number of air inlets being the same as the number of extension strips, the air inlets being located at the end of the extension strips near the reinforcing ring, multiple return holes penetrating the flywheel body being formed on the flywheel body, the number of return holes being the same as the number of extension strips, the return holes being located at the end of the extension strips away from the reinforcing ring, the air inlets and return holes being located on opposite sides of the extension strips, and a flow channel groove connecting the return holes and the air inlets being formed on the second surface.

[0006] Furthermore, a fixing bolt is installed on the flywheel body. After the fixing bolt passes through the friction plate and the flywheel body, a nut is installed to fix the flywheel body and the friction plate. A countersunk hole is opened on the side of the friction plate away from the flywheel body for the end of the fixing bolt to be inserted. When the friction plate is installed on the flywheel body, the side of the friction plate close to the flywheel body is in contact with the first surface.

[0007] Furthermore, the end of the extension strip away from the reinforcing ring has a shielding end, and a shoulder is provided on the outer edge of the flywheel body. One end of the shielding end extends to connect with the shoulder, and the opening formed by the extension strip on the first surface is located on one side of the shielding end.

[0008] Furthermore, the gear ring is fitted onto the shoulder platform, which is fixedly connected to multiple circumferentially arranged positioning protrusions, and multiple positioning grooves are provided on the inner edge of the gear ring for the positioning protrusions to be inserted.

[0009] Furthermore, the flywheel body has circumferentially distributed screw holes at its edge, and the gear ring is fixed to the shoulder plate by fixing screws and screw holes.

[0010] Furthermore, the outer edge teeth of the gear ring protrude beyond the outer edge of the flywheel body.

[0011] Furthermore, a crankshaft mounting base is fixedly installed at the center of the flywheel body, the crankshaft hole is opened at the center of the crankshaft mounting base, and the crankshaft mounting base is also provided with circumferentially distributed bolt holes.

[0012] Furthermore, a hood is fixedly installed on the extension strip. The hood is located at the air intake and has an opening on one side. When the flywheel body rotates, the airflow enters the opening.

[0013] The beneficial effects of this application are as follows:

[0014] This invention uses an extension strip to guide cool air into the air intake through a vent as the flywheel rotates. The cool air first passes through the air intake to the second side of the flywheel body, where it circulates through a flow channel. In this flow channel, the cool air absorbs the heat generated by the friction of the friction plates. Simultaneously, because the cool air flows between the first and second sides, it reduces the internal temperature of the flywheel body while preventing excessive temperature differences between the first and second sides, thus improving the service life of the flywheel body. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram according to one embodiment of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the first side of the flywheel body in the embodiment;

[0020] Figure 3 yes Figure 1 The embodiment is shown in the schematic diagram of the installation of the friction plate;

[0021] Figure 4 yes Figure 1 The installation diagram of the gear ring in the embodiment is shown below;

[0022] Figure 5 yes Figure 1 A cross-sectional view of the flywheel body in the embodiment;

[0023] Figure 6 yes Figure 5 A magnified view of a portion of the image.

[0024] Figure label:

[0025] 10. Flywheel body; 11. Friction plate; 12. Crankshaft bore; 13. Bolt hole; 14. Reinforcing ring; 15. Extension strip; 16. Shielding end; 17. Return hole; 18. Inlet hole; 19. Flow channel groove; 20. Fixing bolt; 21. First surface; 22. Second surface; 23. Countersunk hole; 24. Gear ring; 25. Shoulder; 26. Side of the platform; 27. Positioning protrusion; 28. Positioning groove; 29. ​​Fixing screw; 30. Screw hole; 31. Crankshaft mounting base; 32. Air cover. Detailed Implementation

[0026] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0027] It should also be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0029] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0030] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Reference Figure 1-6 A clutch flywheel structure includes: a flywheel body 10, friction plates 11, a gear ring 24, air inlets 18, and return holes 17. The flywheel body 10 has a first surface 21 and a second surface 22. The friction plates 11 are mounted on one side of the second surface 22. During clutch engagement, the second surface 22 contacts the clutch pressure plate and generates heat through friction. An air guide assembly is provided on the first surface 21, protruding from the plane of the first surface 21. The air guide assembly includes a reinforcing ring 14 extending around the axis of the flywheel body 10 and a plurality of extension strips 15 circumferentially distributed around the axis of the flywheel body 10. The extension strips 15 are tangentially arranged to the reinforcing ring 14. A plurality of air inlets 18 penetrating the flywheel body 10 are provided on the flywheel body 10. The number of air inlets 18 is the same as the number of extension strips 15. The air inlets 18 are located at the end of the extension strip 15 near the reinforcing ring 14. The flywheel body 10 is also provided with multiple return holes 17 penetrating the flywheel body 10. The number of return holes 17 is the same as that of the extension strips 15. The return holes 17 are located at the end of the extension strips 15 away from the reinforcing ring 14. The air inlet 18 and the return holes 17 are located on both sides of the extension strips 15, respectively. A flow channel groove 19 connecting the return holes 17 and the air inlet 18 is provided on the second surface 22. When the flywheel body 10 rotates, the airflow is caused by the extension strips 15 to flow from the outside of the flywheel body 10 to the inside, so that the airflow enters the air inlet 18 and flows to one side of the second surface 22.

[0032] The end of the extension strip 15 away from the reinforcing ring 14 has a blocking end 16. A shoulder 25 is provided on the outer edge of the flywheel body 10. One end of the blocking end 16 extends to connect with the shoulder 25. The opening formed on the first surface 21 by the extension strip 15 is located on one side of the blocking end 16. When the flywheel body 10 rotates, the blocking end 16 blocks the opening of the return hole 17 on one side of the first surface 21. The airflow passes through the flow channel groove 19 and returns to the first surface 21 through the return hole 17, cooling the friction plate 11.

[0033] A fixing bolt 20 is installed on the flywheel body 10. The fixing bolt 20 passes through the friction plate 11 and the flywheel body 10, and then a nut is installed to fix the flywheel body 10 and the friction plate 11. A countersunk hole 23 is opened on the side of the friction plate 11 away from the flywheel body 10 for the end of the fixing bolt 20 to be inserted. When the friction plate 11 is installed on the flywheel body 10, the side of the friction plate 11 closest to the flywheel body 10 is in contact with the second side 22. The friction plate 11 makes the flow channel groove 19 form an air flow channel.

[0034] The gear ring 24 is fitted onto the shoulder 25, which is fixedly connected to a plurality of circumferentially arranged positioning protrusions 27. The inner edge of the gear ring 24 has a plurality of positioning grooves 28 for the positioning protrusions 27 to be inserted into. The positioning grooves 28 position the gear ring 24 and provide some support, reducing the force on the fixing screw 29 and preventing excessive shear torque on the fixing screw 29.

[0035] The flywheel body 10 has circumferentially distributed screw holes 30 at its edge. The gear ring 24 is fixed to the shoulder 25 by fixing screws 29 and screw holes 30. The outer edge teeth of the gear ring 24 protrude from the outer edge of the flywheel body 10.

[0036] A crankshaft mounting base 31 is fixedly installed at the center of the flywheel body 10. A crankshaft hole 12 is opened at the center of the crankshaft mounting base 31, and bolt holes 13 are also provided on the crankshaft mounting base 31 in a circumferential manner. The crankshaft mounting base 31 is connected to the engine crankshaft, and the flywheel body 10 is fixed to the crankshaft through the bolt holes 13 to transmit power.

[0037] A hood 32 is fixedly installed on the extension strip 15. The hood 32 is located at the air intake 18 and has an opening on one side. When the flywheel body 10 rotates, airflow enters the opening. When the flywheel body 10 rotates, the hood 32 causes airflow to enter the air intake 18.

[0038] Working process or usage method:

[0039] 1. When the flywheel rotates, the extension bar 15 causes the airflow to flow from the outside of the flywheel body 10 to the inside. Under the action of the shroud 32, the airflow enters the air intake 18 and flows to the second surface 22. When the airflow flows in the flow channel 19, it cools the friction plate 11. Then the airflow returns to the first surface 21 through the return hole 17, ensuring that the temperature on both sides of the flywheel body 10 is relatively balanced. This avoids the uneven contraction of the two sides of the flywheel body 10 due to excessive temperature difference, which would cause deformation of the flywheel body 10 and affect its normal operation. At the same time, it prevents high-temperature gas from blowing onto the clutch and affecting the clutch's heat dissipation.

[0040] 2. When installing the gear ring 24, the gear ring 24 is positioned by the positioning protrusion 27, and the positioning groove 28 provides certain support to reduce the force on the fixing screw 29 and avoid excessive shearing torque on the fixing screw 29.

[0041] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the application involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A clutch flywheel structure, characterized in that, include: The flywheel body (10) has a first surface (21) and a second surface (22). A friction plate (11) is fixedly installed on the second surface (22). A crankshaft hole (12) is opened at the center of the flywheel body (10). The engine crankshaft cooperates with the crankshaft hole (12) and drives the flywheel body (10) to rotate. A gear ring (24) is installed on the outer edge of the flywheel body (10). An air guide assembly is provided on the first surface (21). The air guide assembly protrudes from the plane of the first surface (21). The air guide assembly includes a reinforcing ring (14) extending around the axis of the flywheel body (10) and a plurality of extension strips (15) distributed circumferentially around the axis of the flywheel body (10). The extension strips (15) are tangential to the reinforcing ring (14). The body (10) has multiple air inlets (18) that pass through the flywheel body (10). The number of air inlets (18) is the same as the number of extension strips (15). The air inlets (18) are located at the end of the extension strip (15) near the reinforcing ring (14). The flywheel body (10) also has multiple return holes (17) that pass through the flywheel body (10). The number of return holes (17) is the same as the number of extension strips (15). The return holes (17) are located at the end of the extension strip (15) away from the reinforcing ring (14). The air inlets (18) and the return holes (17) are located on both sides of the extension strip (15). A flow channel groove (19) connecting the return holes (17) and the air inlets (18) is provided on the second surface (22).

2. The clutch flywheel structure according to claim 1, characterized in that: A fixing bolt (20) is installed on the flywheel body (10). The fixing bolt (20) passes through the friction plate (11) and the flywheel body (10) and then a nut is installed to fix the flywheel body (10) and the friction plate (11). A countersunk hole (23) is opened on the side of the friction plate (11) away from the flywheel body (10) for the end of the fixing bolt (20) to be inserted. When the friction plate (11) is installed on the flywheel body (10), the side of the friction plate (11) close to the flywheel body (10) is in contact with the second side (22).

3. The clutch flywheel structure according to claim 2, characterized in that: The extension strip (15) has a shielding end (16) at one end away from the reinforcing ring (14). The outer edge of the flywheel body (10) is provided with a shoulder platform (25). One end of the shielding end (16) extends to connect with the shoulder platform (25). The opening formed on the first surface (21) of the extension strip (15) is located on one side of the shielding end (16).

4. A clutch flywheel structure according to claim 3, characterized in that: The toothed ring (24) is fitted onto the shoulder platform (25), which is fixedly connected with a plurality of circumferentially arranged positioning protrusions (27). The inner edge of the toothed ring (24) is provided with a plurality of positioning grooves (28) for the positioning protrusions (27) to be embedded.

5. A clutch flywheel structure according to claim 4, characterized in that: The flywheel body (10) has circumferentially distributed screw holes (30) at its edge, and the gear ring (24) is fixed to the shoulder plate (25) by fixing screws (29) and screw holes (30).

6. A clutch flywheel structure according to claim 5, characterized in that: The outer edge teeth of the gear ring (24) protrude from the outer edge of the flywheel body (10).

7. A clutch flywheel structure according to claim 6, characterized in that: A crankshaft mounting base (31) is fixedly provided at the center of the flywheel body (10), and the crankshaft hole (12) is opened at the center of the crankshaft mounting base (31). The crankshaft mounting base (31) is also provided with circumferentially distributed bolt holes (13).

8. A clutch flywheel structure according to claim 7, characterized in that: A hood (32) is fixedly installed on the extension strip (15). The hood (32) is located at the air inlet (18). The hood (32) has an opening on one side. When the flywheel body (10) rotates, the airflow enters the opening.

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