Dry clutch and engine

Abstract

The utility model relates to a dry clutch which comprises a flywheel, the flywheel is provided with a first contact face making contact with a clutch friction plate, the flywheel is provided with an assembly hole, the assembly hole is provided with cooling air holes in the circumferential direction, the flywheel is provided with blades, and the blades generate cooling air in the rotating process of the flywheel. The dry clutch is cooled through cooling air generated by the blades in the flywheel rotating process, the cooling effect is improved, the structure is simple, later maintenance liquid is convenient, the manufacturing cost is low, and the cooling device is suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a dry clutch and an engine. Background Art

[0002] A dry clutch refers to a clutch cooled by air. During use, it is required that the clutch can be engaged and disengaged with the power easily and freely, and can work in a semi-clutch state for a short time without overheating. Generally speaking, a dry clutch has a faster biting reaction and a greater biting force because there is no resistance from engine oil. Since there is no engine oil for cooling, generally, a dry clutch adopts an exposed method for heat dissipation.

[0003] However, when using the exposed method for heat dissipation, the heat dissipation effect is not good. Especially in high-temperature weather, the temperature of the clutch is still relatively high, which will accelerate wear, cause the clutch friction plate to wear faster, reduce the service life, increase the maintenance cost, and cause impact or vibration during the shifting process, affecting the driving comfort. However, if additional heat dissipation equipment is added, it will not only increase the use cost, but also pose a certain challenge to the later maintenance.

[0004] Therefore, how to simply improve the dry clutch to improve its heat dissipation effect is a technical problem that needs to be solved urgently at present. Content of the Utility Model

[0005] In view of this, the utility model provides a dry clutch, an assembly hole is opened on the flywheel, cooling air holes are opened in its circumferential direction, and blades are arranged on the flywheel. During the rotation of the flywheel, the blades generate cooling air to complete the heat dissipation of the dry clutch; the second object of the utility model is to provide an engine including the above dry clutch.

[0006] The dry clutch provided by the utility model adopts the following technical scheme:

[0007] A dry clutch includes a flywheel, the flywheel has a first contact surface contacting the clutch friction plate, the flywheel is provided with an assembly hole, the assembly hole is provided with cooling air holes along the circumferential direction, the flywheel is provided with blades, and the blades generate cooling air during the rotation of the flywheel.

[0008] Optionally, the assembly hole is a spline hole.

[0009] Optionally, an installation platform is arranged at the axis center of the flywheel, and a plurality of blades are obliquely arranged along the circumferential direction of the installation platform.

[0010] Optionally, the installation platform is a hexagonal prism platform, the middle of the hexagonal prism platform is hollow and communicates with the assembly hole, and six blades are arranged and are respectively arranged at the edges of the hexagonal prism platform.

[0011] Optionally, the flywheel is provided with a first boss, and the first contact surface is located at the top of the first boss.

[0012] Optionally, it further includes a clutch pressure plate, and the clutch pressure plate is provided with a second boss that contacts the clutch friction plate.

[0013] Optionally, it further includes a housing, and the housing is provided with an air inlet and an air outlet.

[0014] Optionally, a water leakage port is provided at the bottom of the housing.

[0015] To achieve the above second objective, the present invention further provides an engine, which includes any one of the above dry clutches. Since the above dry clutch has the above technical effects, the engine with this dry clutch should also have corresponding technical effects.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects: Description of the Drawings

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention;

[0019] Figure 2 is the side cross-sectional view of the embodiment of the present invention;

[0020] Figure 3 is the front view of the embodiment of the present invention.

[0021] Explanation of the reference numerals: 1. Flywheel; 2. Ring gear; 3. Positioning pin; 4. Spline hole; 5. Blade; 6. Guide groove; 7. Cooling air hole. Detailed Embodiments

[0022] The following uses specific examples to illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] The following combines the attached Figures 1-3A further detailed description is given to the present utility model.

[0024] An embodiment of the present utility model discloses a dry clutch and an engine.

[0025] Referring to Figure 1 、 Figure 2 、 Figure 3 An dry clutch includes a flywheel 1. The flywheel 1 has a first contact surface contacting with a clutch friction plate. The flywheel 1 is provided with an assembly hole. The assembly hole is provided with cooling air holes 7 along the circumferential direction. Blades 5 are arranged on the flywheel 1. Cooling air is generated by the blades 5 during the rotation of the flywheel 1. The dry clutch is dissipated heat by the cooling air generated by the blades 5 during the rotation of the flywheel 1, improving the heat dissipation effect. It not only has a simple structure, but also is convenient for later maintenance and has a low manufacturing cost, which is suitable for popularization.

[0026] In this embodiment, the flywheel 1 is a disc with a large moment of inertia and is installed on the rear flange of the engine crankshaft.

[0027] In this embodiment, a gear ring 2 is arranged on the outer edge of the flywheel 1 to realize the power transmission between the starter and the crankshaft and provide inertia for the engine. The flywheel 1 is installed at the tail of the crankshaft through a positioning pin 3, at the joint with the clutch. The positioning pin 3 of the flywheel 1 transmits the power of the engine from the crankshaft to other parts of the transmission system, ensuring the accurate positioning of the flywheel 1 and the engine and avoiding deviation and swing.

[0028] In this embodiment, the assembly hole is a spline hole 4. Specifically, 6 - 10 cooling air inlet holes are arranged around the spline hole 4 and corresponding blades 5 are arranged beside the spline hole 4. The dry clutch is dissipated heat by the cooling air generated by the blades 5 during the rotation of the flywheel 1, improving the heat dissipation effect.

[0029] A guide groove 6 is arranged on the outer contour of the flywheel 1, and the blade 5 is arranged in the guide groove 6.

[0030] An installation platform is arranged at the axis of the flywheel 1. A plurality of blades 5 are inclinedly arranged along the circumference of the installation platform. The inclined arrangement forms a structure similar to a marine propeller. Each cooling air inlet hole is divided by adjacent blades 5, effectively ensuring the air inlet efficiency of the cooling air inlet hole and improving the heat dissipation effect.

[0031] In this embodiment, the installation platform is a hexagonal frustum. The middle of the hexagonal frustum is hollow and communicates with the assembly hole. Six blades 5 are arranged and are respectively arranged at the edges of the hexagonal frustum.

[0032] In this embodiment, the flywheel 1 is provided with a first boss. The first contact surface is located at the top of the first boss. The setting of the first boss makes the plane position higher than the surrounding planes, increasing the heat dissipation area and further improving the heat dissipation effect of the dry clutch.

[0033] In this embodiment, it further includes a clutch pressure plate, and a second boss contacting the clutch friction plate is provided on the clutch pressure plate.

[0034] In this embodiment, it further includes a housing. An air inlet and an air outlet are provided on the housing. A clutch friction plate, a clutch pressure plate, a flywheel 1 and other related components are installed inside the housing, and these components cooperate together to ensure smooth power transmission.

[0035] In this embodiment, a water leakage port is provided at the bottom of the housing for draining accumulated water inside the housing, effectively ensuring the stability of the flywheel 1 and its components.

[0036] The present utility model also provides an engine, and the engine includes the above-mentioned dry clutch. Since the engine adopts all the above technical solutions, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0037] Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. The above are only the preferred embodiments of the present utility model. It should be noted that due to the limited nature of written expression and objectively existing infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A dry clutch, characterized in that: The invention comprises a flywheel, wherein the flywheel has a contact surface 1 which contacts with a clutch friction plate, the flywheel is provided with an assembly hole, the assembly hole is provided with cooling air holes along the circumference, and the flywheel is provided with blades, and the blades generate cooling air during the rotation of the flywheel.

2. The dry clutch according to claim 1, characterized in that: The assembly hole is a spline hole.

3. The dry clutch according to claim 2, characterized in that: The flywheel axis is provided with a mounting platform, and a plurality of blades are arranged obliquely along the circumferential direction of the mounting platform.

4. The dry clutch according to claim 3, characterized in that: The mounting platform is a hexagonal platform, the middle of which is hollow and communicates with the assembly hole, and six blades are arranged respectively at the corners of the hexagonal platform.

5. The dry clutch according to claim 3, characterized in that: The flywheel is provided with a boss one, and the contact surface one is located on the top of the boss one.

6. The dry clutch according to claim 1, characterized in that: It also includes a clutch pressure plate, on which a boss 2 is provided for contacting the clutch friction plate.

7. The dry clutch according to claim 1, characterized in that: It also includes a casing, on which an air inlet and an air outlet are arranged.

8. The dry clutch according to claim 7, characterized in that: The bottom of the casing is provided with a water leakage port.

9. The dry clutch according to claim 7, characterized in that: The outer contour of the flywheel is provided with a guide groove, and the blades are arranged in the guide groove.

10. An engine, characterized in that: The engine is equipped with a dry clutch as claimed in any one of claims 1 to 9.

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