Gear and transmission mechanism

Abstract

The utility model provides a gear and a transmission mechanism. The gear comprises a gear disc and a gear ring, wherein the gear disc is provided with a mounting hole and a boss surrounding the mounting hole; an inner spline is arranged on the inner wall of the gear ring; the side, away from the mounting hole, of the gear disc is fixedly connected with the gear ring, one side of the gear disc abuts against one side of the inner spline, and the gear ring and the gear disc are matched to form an embedded cavity. According to the gear, the internal spline and the boss are machined in a sectional mode and then welded into a whole, the complex gear structure is simplified, and the machining efficiency is improved; the gear fully compresses the axial space, the layout is compact, the structure is simple, the manufacturability is good, the problems that an existing gear is complex in structure and high in machining cost are solved, and the purposes of reducing weight and cost and being compact in space are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile transmissions, in particular to a gear and a transmission mechanism. Background Art

[0002] Based on the original electromechanical coupling transmission design concept, the transmission aims to develop a transmission structure with more compact space, lighter weight and better cost. It mainly includes multiple power sources such as engines and electric motors. The torque and speed delivered by the engine are transmitted to the clutch through the input shaft and then to other components. The clutch realizes single-speed power transmission, and its axial size affects the axial size of the transmission. The gear of the input shaft not only transmits the torque and speed delivered by the engine, but also plays the role of the clutch outer shell. Therefore, how to design the gear to achieve fewer parts, simpler structure and more compact space size has become the key to the transmission.

[0003] The traditional clutch outer shell is stamped and formed. In order to further optimize the space and reduce the axial size, the clutch plate is embedded inside the gear, that is, the gear serves as the outer shell of the clutch. This requires the gear to be processed with an internal spline that matches the clutch plate. At present, processing the internal spline of the gear has become a technical difficulty that must be overcome. The process of inserting the internal spline is inefficient and will leave a tool retraction groove; the cost of precision forging is high. Therefore, there is an urgent need for a gear that can embed the clutch inside the gear and fully compress the axial space, with a compact layout, simple structure, and good processability. Utility Model Content

[0004] The utility model provides a gear and a transmission mechanism to solve the problems of complex structure and high processing cost of the existing gear.

[0005] A gear, comprising a gear plate and a gear ring:

[0006] The gear plate is provided with a mounting hole and a boss arranged around the mounting hole;

[0007] The inner wall of the gear ring is provided with internal splines;

[0008] The side of the gear plate away from the mounting hole is connected and fixed to the gear ring, one side of the gear plate abuts against one side of the internal spline, and the gear ring and the gear plate cooperate to form an embedded cavity.

[0009] Preferably, the gear plate and the gear ring are connected and fixed by welding.

[0010] Preferably, the gear disc is assembled in the gear ring to form a welding gap;

[0011] The gear further includes a welding layer welded and filled in the welding gap.

[0012] Preferably, the gear rim includes a first rim and a second rim extending from the first rim in an axial direction;

[0013] The first wheel rim is used to assemble the gear plate;

[0014] The inner wall of the second rim is provided with the inner spline;

[0015] The inner diameter of the first rim is smaller than the inner diameter of the second rim.

[0016] Preferably, the gear disc comprises a first wheel disc and a second wheel disc extending from the first wheel disc in a radial direction;

[0017] The first wheel disc is provided with the mounting hole;

[0018] The boss is provided on the second wheel disc, and the outer wall of the second wheel disc is fixedly connected to the gear ring;

[0019] The thickness of the first wheel disc is greater than the thickness of the second wheel disc.

[0020] A transmission mechanism comprises an input shaft, a clutch and the gear;

[0021] The gear and the clutch are both mounted on the input shaft;

[0022] The clutch is embedded in the embedded cavity, the clutch abuts against the boss and cooperates with the internal spline.

[0023] Preferably, the clutch comprises a clutch body, a clutch housing, a clutch inner hub and a clutch steel plate group;

[0024] The clutch housing is arranged opposite to the clutch inner hub to form a receiving cavity for placing the clutch body;

[0025] The clutch steel plate group is installed on the clutch inner hub, the clutch steel plate group abuts against the boss and cooperates with the internal spline;

[0026] A clutch cavity is formed between the clutch inner hub and the gear plate.

[0027] Preferably, the input shaft is provided with an oil passage, an oil injection hole and a flow-dividing oil hole;

[0028] The oil passage is connected with the clutch cavity through the diverter oil hole to form a lubricating oil circuit for lubricating the clutch.

[0029] Preferably, an oil groove is formed between two adjacent bosses, and the oil groove cooperates with the clutch steel plate group to form an oil branch, and the oil branch is connected to the clutch cavity and the lubricating oil circuit.

[0030] Preferably, the transmission mechanism comprises a first support bearing, a second support bearing, a retaining spring, a skeleton oil seal and a needle bearing;

[0031] The first support bearing is mounted on the first end of the input shaft, and the first support bearing is connected to the clutch housing, and the second support bearing is mounted on the second end of the input shaft;

[0032] The retaining spring is disposed at the first end of the input shaft and abuts against the outer side of the first support bearing;

[0033] The skeleton oil seal is arranged in the installation gap formed between the clutch housing and the input shaft;

[0034] The needle roller bearing is arranged in a mounting gap between the gear and the input shaft.

[0035] The gear provided by the embodiment of the utility model includes a gear plate and a gear ring. The gear plate is provided with a mounting hole, and the mounting hole is used to mount the gear on the input shaft. The gear plate is provided with a boss arranged around the mounting hole. The boss of the gear plate is formed by forging, and the internal spline on the inner wall of the gear ring is formed by broaching. The gear plate and the gear ring are fixed by welding, and the gear plate is fixedly assembled in the gear ring. Specifically, the side of the gear plate away from the mounting hole, that is, the outer ring of the gear plate, is connected and fixed with the gear ring, and one side of the gear plate abuts against one side of the internal spline. The gear ring and the gear plate cooperate to form an embedded cavity for embedded assembly of parts, making full use of the axial space of the gear, achieving the purpose of reducing weight and cost, and reasonable and compact layout. The boss arranged around the mounting hole can make the parts embedded in the embedded cavity and abut against the boss, so that the installation of the parts is more reliable and convenient; finally, the processes of gear hobbing, heat treatment, and gear grinding are completed. Among them, there are at least two bosses, so that the installation of the parts is more balanced and stable.

[0036] In this example, the gears are processed in sections to produce internal splines and bosses, which are then welded together, simplifying the complex gear structure and improving processing efficiency. The gears fully compress the axial space, have a compact layout, simple structure, and good processability, solving the problems of complex existing gear structures and high processing costs, and achieving the goals of reducing weight, reducing costs, and making the space compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a cross-sectional view of a transmission mechanism in one embodiment of the utility model;

[0039] Figure 2 is a cross-sectional view of a gear in one embodiment of the utility model;

[0040] Figure 3 It is an axonometric view of a gear in one embodiment of the utility model.

[0041] Among them, 1. gear plate; 11. mounting hole; 12. boss; 13. first wheel plate; 14. second wheel plate; 2. gear ring; 21. internal spline; 22. first wheel ring; 23. second wheel ring; 3. welding layer; 4. input shaft; 41. oil channel; 42. oil filling hole; 43. diverter oil hole; 5. clutch; 51. clutch body; 52. clutch housing; 53. clutch inner hub; 54. clutch steel plate group; 6. oil groove; 7. first support bearing; 8. second support bearing; 9. skeleton oil seal; 10. needle roller bearing. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The utility model embodiment provides a gear, referring to Figure 1 , Figure 2 and Figure 3 The gear comprises a gear plate 1 and a gear ring 2; the gear plate 1 is provided with a mounting hole 11 and a boss 12 arranged around the mounting hole 11; the inner wall of the gear ring 2 is provided with an internal spline 21; the side of the gear plate 1 away from the mounting hole 11 is connected and fixed to the gear ring 2, one side of the gear plate 1 is in contact with one side of the internal spline 21, and the gear ring 2 and the gear plate 1 cooperate to form an embedded cavity.

[0046] As an example, the gear includes a gear plate 1 and a gear ring 2. The gear plate 1 is provided with a mounting hole 11, and the mounting hole 11 is used to mount the gear on the input shaft 4. The gear plate 1 is provided with a boss 12 arranged around the mounting hole 11. The boss 12 of the gear plate 1 is formed by forging, and the internal spline 21 on the inner wall of the gear ring 2 is formed by broaching; the gear plate 1 and the gear ring 2 are fixed by welding, and the gear plate 1 is fixedly assembled in the gear ring 2. Specifically, the side of the gear plate 1 away from the mounting hole 11, that is, the outer ring of the gear plate 1 is connected and fixed to the gear ring 2, and one side of the gear plate 1 is abutted against one side of the internal spline 21. The gear ring 2 and the gear plate 1 cooperate to form an embedded cavity for embedded assembly of parts, making full use of the axial space of the gear to achieve the purpose of reducing weight and cost, and reasonable and compact layout. The boss 12 arranged around the mounting hole 11 can make the parts abut against the boss 12 when they are embedded in the embedded cavity, making the installation of the parts more reliable and convenient; finally, the processes of gear hobbing, heat treatment, and gear grinding are completed. There are at least two bosses 12 to make the installation of parts more balanced and stable.

[0047] In this example, the gear is processed in sections to form an internal spline 21 and a boss 12, and then welded together, which simplifies the complex gear structure and improves processing efficiency. The gear fully compresses the axial space, has a compact layout, a simple structure, and good processability, which solves the problem of complex gear structure and high processing cost of existing gears, and achieves the purpose of reducing weight and cost and compact space.

[0048] In one embodiment, referring to Figure 1 and Figure 2 The gear plate 1 and the gear ring 2 are connected and fixed by welding.

[0049] As an example, the gear plate 1 and the gear ring 2 are connected and fixed by welding, which can ensure that the connection between the gear plate 1 and the gear ring 2 is more stable and provide safety guarantee for the processing of the gear.

[0050] In one embodiment, referring to Figure 1 and Figure 2 The gear plate 1 is assembled in the gear ring 2 to form a welding gap; the gear also includes a welding layer 3 welded to fill the welding gap.

[0051] As an example, the gear plate 1 is assembled in the gear ring 2 to form a welding gap, and the welding layer 3 is welded and filled in the welding gap, which makes it easy to fix the gear plate 1 and the gear ring 2 together, provides convenience for the processing of the gear, and reduces the processing cost.

[0052] In one embodiment, referring to Figure 2 and Figure 3 The gear rim 2 includes a first rim 22 and a second rim 23 extending from the first rim 22 in an axial direction; the first rim 22 is used to assemble the gear plate 1; the inner wall of the second rim 23 is provided with an inner spline 21; the inner diameter of the first rim 22 is smaller than the inner diameter of the second rim 23.

[0053] As an example, the gear ring 2 includes a first wheel ring 22 and a second wheel ring 23. The gear plate 1 is assembled in the first wheel ring 22. The second wheel ring 23 extends from the first wheel ring 22 in the axial direction. The inner diameter of the first wheel ring 22 is smaller than the inner diameter of the second wheel ring 23. The two form a stepped structure to limit the gear plate 1 so that the gear ring 2 and the gear plate 1 cooperate to form an embedded cavity for embedded assembly parts, making full use of the axial space of the gear to achieve the purpose of weight reduction and cost reduction, and reasonable and compact layout. The inner wall of the second wheel ring 23 is provided with an internal spline 21 for embedding and clamping parts. The entire first wheel ring 22 and a part of the second wheel ring 23 are provided with gear teeth to facilitate connection with the transmission gear. An assembly groove is provided at the intersection of the first wheel ring 22 and the second wheel ring 23 to facilitate the assembly of the gear plate 1.

[0054] In one embodiment, referring to Figure 2 and Figure 3 The gear disc 1 includes a first wheel disc 13 and a second wheel disc 14 extending radially from the first wheel disc 13; a mounting hole 11 is provided on the first wheel disc 13; a boss 12 is provided on the second wheel disc 14, and an outer wall of the second wheel disc 14 is fixedly connected to the gear ring 2; the thickness of the first wheel disc 13 is greater than the thickness of the second wheel disc 14.

[0055] As an example, it is introduced that the gear plate 1 includes a first wheel plate 13 and a second wheel plate 14, and the mounting hole 11 is set on the first wheel plate 13, so as to facilitate the installation of the gear plate 1 to the input shaft 4; the second wheel plate 14 extends from the first wheel plate 13 in a radial direction, and the outer wall of the second wheel plate 14 is fixedly connected to the gear ring 2; the thickness of the first wheel plate 13 is greater than the thickness of the second wheel plate 14, so that the gear ring 2 and the gear plate 1 cooperate to form an embedded cavity for embedded assembly parts, making full use of the axial space of the gear, and achieving the purpose of reducing weight and cost and reasonable and compact layout.

[0056] The utility model embodiment provides a transmission mechanism, referring to Figure 1, including an input shaft 4, a clutch 5 and a gear; the gear and the clutch 5 are both assembled on the input shaft 4; the clutch 5 is embedded in the embedded cavity, the clutch 5 abuts against the boss 12 and cooperates with the internal spline 21.

[0057] As an example, the gear and the clutch 5 are both assembled on the input shaft 4, the gear includes a gear plate 1 and a gear ring 2, the mounting hole 11 set on the gear plate 1 is used to mount the gear on the input shaft 4, the boss 12 of the gear plate 1 is forged, the internal spline 21 on the inner wall of the gear ring 2 is broached, the gear plate 1 and the gear ring 2 are fixed by welding, the gear plate 1 is fixedly assembled in the gear ring 2, specifically, the side of the gear plate 1 away from the mounting hole 11, that is, the outer ring of the gear plate 1 is connected and fixed to the gear ring 2, one side of the gear plate 1 is abutted against one side of the internal spline 21, the gear ring 2 and the gear plate 1 cooperate to form an embedded cavity for embedded assembly of the clutch 5, making full use of the axial space of the gear to achieve the purpose of reducing weight and cost and reasonable and compact layout, the clutch 5 abuts against the boss 12 and cooperates with the internal spline 21 to make the installation of the clutch 5 more secure and convenient; finally, the processes of gear hobbing, heat treatment, and gear grinding are completed.

[0058] In this example, the clutch 5 and the gear are integrated, and the clutch 5 is embedded in the embedded cavity of the gear, making the spatial layout more compact, achieving the purpose of reducing weight and cost and compact space; the internal spline 21 and the boss 12 are processed in sections and then welded together to simplify the complex gear structure and improve the processing efficiency. At the same time, it can also serve as a protective shell to protect the clutch 5; when in use, the input shaft 4 spline is connected to the engine, and the power is connected through the spline of the input shaft 4 and the spline of the clutch 5, and the torque is output through the gear.

[0059] In one embodiment, referring to Figure 1 The clutch 5 includes a clutch body 51, a clutch housing 52, a clutch inner hub 53 and a clutch steel plate group 54; the clutch housing 52 and the clutch inner hub 53 are arranged opposite to each other to form a receiving cavity for placing the clutch body 51; the clutch steel plate group 54 is installed on the clutch inner hub 53, the clutch steel plate group 54 abuts against the boss 12 and cooperates with the internal spline 21; a clutch cavity is formed between the clutch inner hub 53 and the gear plate 1.

[0060] As an example, the clutch 5 is introduced to include a clutch body 51, a clutch housing 52, a clutch inner hub 53 and a clutch steel plate group 54, wherein the clutch housing 52 and the clutch inner hub 53 are arranged opposite to each other to form a accommodating cavity, which is convenient for placing the clutch body 51, and the clutch steel plate group 54 is installed on the clutch inner hub 53, and the clutch steel plate group 54 abuts against the boss 12 and cooperates with the internal spline 21, so as to facilitate embedding the clutch 5 in the embedded cavity formed by the gear ring 2 and the gear plate 1; a clutch cavity is formed between the clutch inner hub 53 and the gear plate 1, and lubricating oil is introduced into the clutch cavity, which is convenient for lubricating the clutch and improving the service life of the equipment.

[0061] In one embodiment, referring to Figure 1 An oil passage 41 , an oil filling hole 42 and a diverter oil hole 43 are provided in the input shaft 4 ; the oil passage 41 is connected to the clutch cavity through the diverter oil hole 43 to form a lubricating oil circuit for lubricating the clutch 5 .

[0062] As an example, an oil passage 41, an oil filling hole 42 and a diverter oil hole 43 are provided in the input shaft 4; the diverter oil hole 43 is connected to the clutch cavity for lubricating the clutch 5; the oil filling hole 42 and the diverter oil hole 43 are both connected to the oil passage 41 to form a lubricating oil circuit, which is convenient for lubrication and maintenance of the equipment and improves the service life of the equipment; the lubricating oil is injected into the oil passage 41 through the oil filling hole 42, and thrown into the clutch cavity from the diverter oil hole 43, a part of the lubricating oil lubricates the clutch powder sheet, and a part of the lubricating oil lubricates the clutch light sheet through the gap between the boss 12 and the clutch inner hub 53, thereby ensuring the safe use of the equipment.

[0063] In one embodiment, referring to Figure 3 An oil groove 6 is formed between two adjacent bosses 12, and the oil groove 6 cooperates with the clutch steel plate group 54 to form an oil branch, which is connected to the clutch cavity and the lubricating oil circuit.

[0064] As an example, an oil groove 6 is formed between two adjacent bosses 12. The oil groove 6 cooperates with the clutch steel plate group 54 to form an oil branch. The oil branch is connected to the clutch cavity and the lubricating oil circuit. The lubricating oil can lubricate the clutch plate through the oil groove 6 to lubricate and maintain it, thereby increasing the service life of the equipment.

[0065] In one embodiment, referring to Figure 1The transmission mechanism includes a first support bearing 7, a second support bearing 8, a retaining spring, a skeleton oil seal 9 and a needle bearing 10; the first support bearing 7 is assembled at the first end of the input shaft 4, and the first support bearing 7 is connected to the clutch housing 52; the second support bearing 8 is assembled at the second end of the input shaft 4; the retaining spring is set at the first end of the input shaft 4, and abuts against the outer side of the first support bearing 7; the skeleton oil seal 9 is assembled in the installation gap formed between the clutch housing 52 and the input shaft 4; the needle bearing 10 is arranged in the installation gap between the gear and the input shaft 4.

[0066] In this example, the first support bearing 7 is assembled at the first end of the input shaft 4, and the first support bearing 7 is connected to the clutch housing 52; the second support bearing 8 is assembled at the second end of the input shaft 4; the first support bearing 7 and the second support bearing 8 cooperate to support the entire shaft system, and the retaining spring is set at the first end of the input shaft 4 and abuts against the outer side of the first support bearing 7, which is used to limit the first support bearing 7; the skeleton oil seal 9 is assembled in the installation gap formed between the clutch housing 52 and the input shaft 4, and is used to seal the installation gap; the needle bearing 10 is arranged in the installation gap between the gear and the input shaft 4, and is used to reduce the friction between the mounting hole 11 and the input shaft 4, so that the relative rotation between the two is smoother.

[0067] An embodiment of the utility model provides a car, comprising a transmission mechanism.

[0068] As an example, the gear and the clutch 5 are both assembled on the input shaft 4, the gear includes a gear plate 1 and a gear ring 2, the mounting hole 11 set on the gear plate 1 is used to mount the gear on the input shaft 4, the boss 12 of the gear plate 1 is forged, the internal spline 21 on the inner wall of the gear ring 2 is broached, the gear plate 1 and the gear ring 2 are fixed by welding, the gear plate 1 is fixedly assembled in the gear ring 2, specifically, the side of the gear plate 1 away from the mounting hole 11, that is, the outer ring of the gear plate 1 is connected and fixed to the gear ring 2, one side of the gear plate 1 is abutted against one side of the internal spline 21, the gear ring 2 and the gear plate 1 cooperate to form an embedded cavity for embedded assembly of the clutch 5, making full use of the axial space of the gear to achieve the purpose of reducing weight and cost and reasonable and compact layout, the clutch 5 abuts against the boss 12 and cooperates with the internal spline 21 to make the installation of the clutch 5 more secure and convenient; finally, the processes of gear hobbing, heat treatment, and gear grinding are completed.

[0069] In this example, the clutch 5 and the gear are integrated, and the clutch 5 is embedded in the embedded cavity of the gear, making the spatial layout more compact, achieving the purpose of reducing weight and cost and compact space; the internal spline 21 and the boss 12 are processed in sections and then welded together to simplify the complex gear structure and improve the processing efficiency. At the same time, it can also serve as a protective shell to protect the clutch 5; when in use, the input shaft 4 spline is connected to the engine, and the power is connected through the spline of the input shaft 4 and the spline of the clutch 5, and the torque is output through the gear.

[0070] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A gear, characterized in that: Including gear plate and gear ring: The gear plate is provided with a mounting hole and a boss arranged around the mounting hole; The inner wall of the gear ring is provided with internal splines; The side of the gear plate away from the mounting hole is connected and fixed to the gear ring, one side of the gear plate abuts against one side of the internal spline, and the gear ring and the gear plate cooperate to form an embedded cavity.

2. The gear according to claim 1, characterized in that: The gear plate and the gear ring are connected and fixed by welding.

3. The gear according to claim 1 or 2, characterized in that: The gear disc is assembled in the gear ring to form a welding gap; The gear further includes a welding layer welded and filled in the welding gap.

4. The gear according to claim 1 or 2, characterized in that: The gear rim includes a first rim and a second rim extending from the first rim in an axial direction; The first wheel rim is used to assemble the gear plate; The inner wall of the second rim is provided with the inner spline; The inner diameter of the first rim is smaller than the inner diameter of the second rim.

5. The gear according to claim 4, characterized in that The gear plate includes a first wheel plate and a second wheel plate extending from the first wheel plate in a radial direction; The first wheel disc is provided with the mounting hole; The boss is provided on the second wheel disc, and the outer wall of the second wheel disc is fixedly connected to the gear ring; The thickness of the first wheel disc is greater than the thickness of the second wheel disc.

6. A transmission mechanism, characterized in that: Comprising an input shaft, a clutch and the gear according to any one of claims 1 to 5; The gear and the clutch are both mounted on the input shaft; The clutch is embedded in the embedded cavity, the clutch abuts against the boss and cooperates with the internal spline.

7. The transmission mechanism according to claim 6, characterized in that: The clutch comprises a clutch body, a clutch housing, a clutch inner hub and a clutch steel plate group; The clutch housing is arranged opposite to the clutch inner hub to form a receiving cavity for placing the clutch body; The clutch steel plate group is installed on the clutch inner hub, the clutch steel plate group abuts against the boss and cooperates with the internal spline; A clutch cavity is formed between the clutch inner hub and the gear plate.

8. The transmission mechanism according to claim 7, characterized in that: The input shaft is provided with an oil passage, an oil filling hole and a diverter oil hole; The oil passage is connected with the clutch cavity through the diverter oil hole to form a lubricating oil circuit for lubricating the clutch.

9. The transmission mechanism according to claim 8, characterized in that: An oil passage groove is formed between two adjacent bosses, and the oil passage groove cooperates with the clutch steel plate group to form an oil passage branch, and the oil passage branch is connected with the clutch cavity and the lubricating oil passage.

10. The transmission mechanism according to claim 8, characterized in that: The transmission mechanism comprises a first support bearing, a second support bearing, a retaining spring, a skeleton oil seal and a needle bearing; The first support bearing is mounted on the first end of the input shaft, and the first support bearing is connected to the clutch housing, and the second support bearing is mounted on the second end of the input shaft; The retaining spring is disposed at the first end of the input shaft and abuts against the outer side of the first support bearing; The skeleton oil seal is arranged in the installation gap formed between the clutch housing and the input shaft; The needle roller bearing is arranged in a mounting gap between the gear and the input shaft.

Images