Integrated clutch shaft structure

Abstract

The utility model discloses an integrated clutch shaft structure which comprises a shaft body, a built-in blind hole is formed in the shaft body, the built-in blind hole is communicated to one end of the shaft body, and the shaft body is provided with a first bearing matching cylindrical surface, an execution ring matching cylindrical surface and a roller pin matching cylindrical surface. A first oil slinging hole, a second oil slinging hole and a third oil slinging hole are formed in the shaft body, the two ends of the first oil slinging hole communicate with one end of the first bearing matching cylindrical face and the built-in blind hole correspondingly, and the two ends of the second oil slinging hole communicate with the outer circumferential face of the execution ring matching cylindrical face and the built-in blind hole correspondingly. And the two ends of the third oil throwing hole are respectively communicated with the outer peripheral surface of the roller pin matching cylindrical surface and the built-in blind hole. The lubricating device has the advantages that the first oil throwing hole, the second oil throwing hole and the third oil throwing hole convey lubricating oil at different positions according to different lubricating requirements, the lubricating effect is improved, and the good lubricating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft structures, in particular to an integrated clutch shaft structure. Background Art

[0002] With the development of new energy vehicles, electric motor drive assemblies and DHT hybrid powertrains are gradually moving towards miniaturization, lightweighting, and high efficiency. High integration of reduction gear trains is an effective way to achieve these goals.

[0003] Chinese utility model patent publication number CN219510120U discloses a planetary gear shaft with a lubricating oil hole, comprising a bearing, a planetary gear shaft, and a rubber sheet. The planetary gear shaft has a lubricating oil hole on its outer surface, which communicates with the interior of the planetary gear shaft. A lubricating oil groove is also provided on the outer surface of the planetary gear shaft, which communicates with the lubricating oil hole. A sponge ring is fixedly mounted on the outer surface of the rubber sheet, and the sponge is located inside the planetary gear shaft. An oil inlet hole is provided on the outer surface of the rubber sheet at the axial center. This allows lubricating oil to fully enter the gap between the contact area of ​​the planetary gear shaft and the needle roller bearing, lubricating the planetary gear shaft and the needle roller bearing, improving the performance of the planetary gear shaft and reducing wear between the planetary gear shaft and the needle roller bearing, thereby increasing the service life of the transmission.

[0004] In a hybrid powertrain, the input shaft must be equipped with different gears, which transmit power through gears with varying numbers of teeth to achieve gear shifting. The lubrication structure of the aforementioned planetary gear shaft with lubricating oil holes is relatively simple, resulting in poor lubrication performance and failing to meet the lubrication requirements of the hybrid powertrain input shaft. Therefore, the prior art suffers from the technical problem of poor lubrication performance. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the present utility model is to provide an integrated clutch shaft structure, which includes a shaft body. The integrated clutch shaft structure has the advantage of good lubrication effect.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0007] An integrated clutch shaft structure includes a shaft body, a built-in blind hole is provided in the shaft body, the built-in blind hole is connected to one end of the shaft body, the shaft body is provided with a first bearing mating cylindrical surface, an actuator ring mating cylindrical surface and a needle roller mating cylindrical surface, a first oil-fling hole, a second oil-fling hole and a third oil-fling hole are provided in the shaft body, two ends of the first oil-fling hole are respectively connected to one end of the first bearing mating cylindrical surface and the built-in blind hole, two ends of the second oil-fling hole are respectively connected to the outer circumferential surface of the actuator ring mating cylindrical surface and the built-in blind hole, and two ends of the third oil-fling hole are respectively connected to the outer circumferential surface of the needle roller mating cylindrical surface and the built-in blind hole.

[0008] Through such an arrangement, the first oil-swing hole, the second oil-swing hole and the third oil-swing hole deliver lubricating oil at different positions according to different lubrication requirements, thereby improving the lubrication effect and achieving the advantage of better lubrication effect.

[0009] Preferably, the first bearing fitting cylindrical surface, the execution ring fitting cylindrical surface and the needle roller fitting cylindrical surface are arranged in sequence along the axial direction of the shaft body, the diameter of the shaft body at the execution ring fitting cylindrical surface is larger than the diameter of the shaft body at the first bearing fitting cylindrical surface and smaller than the diameter of the shaft body at the needle roller fitting cylindrical surface, and the needle roller fitting cylindrical surface is located on the side of the first bearing fitting cylindrical surface close to the opening of the built-in blind hole.

[0010] Through such an arrangement, the flow resistance of the lubricating oil is reduced, the influence of the resistance on the lubricating oil delivery is reduced, and the lubrication effect is guaranteed.

[0011] Preferably, the shaft body is fixedly connected with a plurality of petal teeth, and the plurality of petal teeth are evenly distributed along the circumference of the shaft body. The petal teeth are located between the matching cylindrical surface of the needle and the matching cylindrical surface of the execution ring, and the petal teeth are provided with clamping surfaces on both sides along the circumference of the shaft body.

[0012] Through such an arrangement, the coupling disc can be connected by axial sliding on the shaft body and can also be circumferentially clamped by the petal teeth.

[0013] Preferably, the engaging surface is arranged along an inclination, and the width of the petal teeth gradually increases in a direction away from the cylindrical surface of the needle roller fitting.

[0014] With such an arrangement, the coupling disc can be limited by the inclined engaging surface.

[0015] Preferably, the width of the petal teeth gradually increases in a direction away from the shaft body.

[0016] Such an arrangement can prevent the coupling disc from loosening.

[0017] Preferably, the shaft body is fixedly connected to a spring support plate, and the spring support plate is located between the petal teeth and the cylindrical surface of the needle roller.

[0018] This arrangement makes it easy to arrange the spring between the spring support plate and the coupling disk.

[0019] Preferably, the shaft body is installed with an oil plug, and the oil plug is located at the opening of the built-in blind hole.

[0020] Through such an arrangement, the lubricating oil in the built-in blind hole is prevented from accidentally flowing to the outside of the built-in blind hole through the opening of the built-in blind hole.

[0021] Preferably, the oil plug includes a connecting ring, a support ring and an oil blocking plate. The support ring is fixedly connected to one end of the connecting ring close to the third oil-swinging hole and the oil blocking plate respectively. The connecting ring is fixedly arranged on the inner wall of the built-in blind hole. The cross-section of the support ring is arc-shaped, and an oil inlet hole is provided in the middle of the oil blocking plate.

[0022] Through such an arrangement: the reliability of oil blockage is improved.

[0023] Preferably, the shaft body is provided with splines.

[0024] Through such an arrangement, it is convenient to drive the rotating shaft to rotate.

[0025] Preferably, the shaft body is provided with a second bearing fitting cylindrical surface, and the actuator ring fitting cylindrical surface and the needle roller fitting cylindrical surface are located between the first bearing fitting cylindrical surface and the second bearing fitting cylindrical surface.

[0026] This arrangement makes it easier to install the second ball bearing.

[0027] Compared with the existing technology, the present invention has achieved beneficial technical effects:

[0028] Lubricating oil is injected into the built-in blind hole from one end of the shaft body. The lubricating oil in the shaft body is transported to the side of the first bearing mating cylindrical surface through the first oil-fling hole, so that the lubricating oil can be introduced into the side of the first ball bearing, which can improve the lubrication effect of the first ball bearing. The lubricating oil in the built-in blind hole enters the surface of the actuator ring mating cylindrical surface through the second oil-fling hole, thereby providing lubrication for the clutch actuator ring sliding on the actuator ring mating cylindrical surface. The lubricating oil in the built-in blind hole enters the surface of the needle roller mating cylindrical surface through the third oil-fling hole, thereby lubricating the bearing needle roller. Lubricating oil is transported to different locations through the first oil-fling hole, the second oil-fling hole and the third oil-fling hole respectively according to different lubrication needs, thereby improving the lubrication effect and achieving the advantage of better lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of an integrated clutch shaft structure in an embodiment of the present utility model;

[0030] Figure 2 This is a cross-sectional view of the shaft body in the embodiment of the present utility model;

[0031] Figure 3 This is a schematic structural diagram of a spline in an embodiment of the present utility model;

[0032] Figure 4 This is a schematic structural diagram of an oil plug in an embodiment of the present utility model;

[0033] Figure 5It is a structural schematic diagram of the first ball bearing, the clutch actuator ring, the bearing needle and the second ball bearing in the embodiment of the present utility model.

[0034] The technical features indicated by the reference numerals are as follows:

[0035] 11. Shaft body; 12. Built-in blind hole; 13. Petal teeth; 14. Clamping surface; 15. Spring support plate; 16. Spline; 21. First oil-spinning hole; 22. First bearing matching cylindrical surface; 23. First ball bearing; 31. Second oil-spinning hole; 32. Actuator ring matching cylindrical surface; 33. Clutch actuator ring; 34. Engaging plate; 41. Third oil-spinning hole; 42. Needle roller matching cylindrical surface; 43. Bearing needle roller; 44. Driving gear; 51. Second bearing matching cylindrical surface; 52. Second ball bearing; 61. Connecting ring; 62. Support ring; 63. Oil blocking plate; 64. Oil inlet hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments, but the scope of protection claimed in the present invention is not limited to the following specific embodiments.

[0037] refer to Figure 1-Figure 5 , an integrated clutch shaft structure, including a shaft body 11, in which a built-in blind hole 12 is provided. The built-in blind hole 12 is connected to one end of the shaft body 11, and the shaft body 11 is provided with a first bearing mating cylindrical surface 22, an actuator ring mating cylindrical surface 32 and a needle roller mating cylindrical surface 42. The shaft body 11 is provided with a spline 16, which is convenient for installing the pulley and plays a role in facilitating the rotation of the rotating shaft. The shaft body 11 is provided with a second bearing mating cylindrical surface 51, and the actuator ring mating cylindrical surface 32 and the needle roller mating cylindrical surface 42 are located between the first bearing mating cylindrical surface 22 and the second bearing mating cylindrical surface 51, so that the clutch actuator ring 33 and the bearing needle roller 43 and the drive gear 44 are located between the first ball bearing 23 and the second ball bearing 52, thereby making the first ball bearing 23 and the second ball bearing 52.

[0038] A first oil-fling hole 21, a second oil-fling hole 31, and a third oil-fling hole 41 are provided in the shaft body 11. The two ends of the first oil-fling hole 21 are respectively connected to one end of the first bearing-matching cylindrical surface 22 and the built-in blind hole 12. The two ends of the second oil-fling hole 31 are respectively connected to the outer circumference of the actuator ring-matching cylindrical surface 32 and the built-in blind hole 12. The two ends of the third oil-fling hole 41 are respectively connected to the outer circumference of the needle roller-matching cylindrical surface 42 and the built-in blind hole 12. The first bearing-matching cylindrical surface 22, the actuator ring-matching cylindrical surface 32, and the needle roller-matching cylindrical surface 42 are arranged in sequence along the axial direction of the shaft body 11. The diameter of the shaft body 11 at the actuator ring-matching cylindrical surface 32 is larger than the diameter of the shaft body 11 at the first bearing-matching cylindrical surface 22 and smaller than the diameter of the shaft body 11 at the needle roller-matching cylindrical surface 42. The needle roller-matching cylindrical surface 42 is located on the side of the first bearing-matching cylindrical surface 22 near the opening of the built-in blind hole 12.

[0039] The shaft body 11 is fixedly connected with a plurality of petal teeth 13, and the plurality of petal teeth 13 are evenly distributed along the circumference of the shaft body 11. The petal teeth 13 are located between the needle roller mating cylindrical surface 42 and the execution ring mating cylindrical surface 32. The petal teeth 13 are provided with clamping surfaces 14 on both sides of the circumference of the shaft body 11. By setting the petal teeth 13, the coupling disc 34 can be axially slidably connected on the shaft body 11 while also being circumferentially clamped by the petal teeth 13. The clamping surface 14 is set at an angle, and the width of the petal teeth 13 gradually increases in the direction away from the needle roller mating cylindrical surface 42. When the coupling disc 34 moves in the direction away from the driving gear 44, the coupling disc 34 is blocked by the end of the petal teeth 13 with a larger width in the axial direction of the shaft body 11, and the coupling disc 34 can be limited by the inclined clamping surface 14. The petal teeth 13 gradually increase in width as they move away from the shaft 11. The wider end of the petal teeth 13, radially along the shaft 11, grips the coupling disc 34, enhancing the structural stability between the coupling disc 34 and the shaft 11 and preventing the coupling disc 34 from loosening. A spring support plate 15 is fixedly connected to the shaft 11 and positioned between the petal teeth 13 and the needle roller mating cylindrical surface 42. A spring is provided between the spring support plate 15 and the coupling disc 34. When the actuator ring moves away from the drive gear 44, the spring pushes the coupling disc 34 in the direction away from the drive gear 44.

[0040] The shaft body 11 is equipped with an oil plug, which is located at the opening of the built-in blind hole 12. The oil plug blocks the lubricating oil in the built-in blind hole 12, preventing the lubricating oil in the built-in blind hole 12 from accidentally flowing to the outside of the built-in blind hole 12 through the opening of the built-in blind hole 12. The oil plug includes a connecting ring 61, a support ring 62, and an oil blocking plate 63. The support ring 62 is fixedly connected to the end of the connecting ring 61 near the third oil-swinging hole 41 and the oil blocking plate 63, respectively. The connecting ring 61 is fixedly set on the inner wall of the built-in blind hole 12. The cross-section of the support ring 62 is arc-shaped, and an oil inlet hole 64 is provided in the middle of the oil blocking plate 63. The connecting ring 61 realizes the installation of the oil plug in the built-in blind hole 12, and the arc-shaped support ring 62 can transfer the load on the oil blocking plate 63 to the connecting ring 61. The oil blocking plate 63 is made of elastic material. When the lubricating oil tends to flow toward the oil blocking plate 63, the lubricating oil will generate a certain oil pressure on the oil blocking plate 63 and cause the oil blocking plate 63 to tilt. After the oil blocking plate 63 tilts, the arc-shaped support ring 62 applies a component force perpendicular to the inner wall of the built-in blind hole 12 to the connecting ring 61, thereby pressing the connecting ring 61 against the inner wall of the built-in blind hole 12, thereby improving the reliability of the oil blockage.

[0041] Specific working process:

[0042] The first ball bearing 23 is mounted on the first bearing-matching cylindrical surface 22, and the clutch actuating ring 33 is slidably connected to the actuator ring 32. A drive gear 44 is sleeved on the needle roller matching cylindrical surface 42, and a bearing needle roller 43 is disposed between the drive gear 44 and the needle roller matching cylindrical surface 42. The bearing needle roller 43 rolls on the needle roller matching cylindrical surface 42, allowing the drive gear 44 to rotate on the shaft 11. The petal teeth 13 are sleeved on the coupling disc 34. The coupling disc 34 and the petal teeth 13 are axially slidably connected and circumferentially engaged along the shaft 11, and the coupling disc 34 abuts against the drive gear 44. The second bearing-matching cylindrical surface 51 is mounted on the second ball bearing 52. When the driving clutch actuator ring 33 moves toward the driving gear 44, the clutch actuator ring 33 can push the coupling disc 34 to abut against the driving gear 44, and through the friction between the coupling disc 34 and the driving gear 44, the driving gear 44 and the shaft 11 rotate synchronously; when the driving gear 44 and the shaft 11 need to rotate synchronously, the clutch actuator ring 33 moves in the direction away from the driving gear 44, and the coupling disc 34 releases the driving gear 44, so that the driving gear 44 can rotate on the shaft 11, thereby enabling the clutch switching of the power output state of the driving gear 44.

[0043] This embodiment has the following advantages:

[0044] Lubricating oil is injected into the built-in blind hole 12 from one end of the shaft body 11. The lubricating oil in the shaft body 11 is transported to the side of the first bearing mating cylindrical surface 22 through the first oil-slinging hole 21, thereby allowing the lubricating oil to flow into the side of the first ball bearing 23, thereby improving the lubrication effect on the first ball bearing 23. The lubricating oil in the built-in blind hole 12 enters the surface of the actuator ring mating cylindrical surface 32 through the second oil-slinging hole 31, thereby providing lubrication for the clutch actuator ring 33 sliding on the actuator ring mating cylindrical surface 32. The lubricating oil in the built-in blind hole 12 enters the surface of the needle roller mating cylindrical surface 42 through the third oil-slinging hole 41, thereby lubricating the bearing needle roller 43. The first oil-slinging hole 21, the second oil-slinging hole 31, and the third oil-slinging hole 41 respectively deliver lubricating oil to different locations to meet different lubrication needs, thereby improving the lubrication effect and achieving the advantage of better lubrication effect.

[0045] The bearing needle roller 43 is generally elongated and cylindrical. The contact area between the bearing needle roller 43, the needle roller mating cylindrical surface 42, and the drive gear 44 is greater than the contact area between the ball and the bearing steel ring in the first ball bearing 23. Therefore, the bearing needle roller 43 requires a greater amount of lubricating oil than the first ball bearing 23. During the rotation of the shaft body 11, the angular velocities of the first and third oil-swinging holes 21 and 41 are equal. However, because the diameter of the needle roller mating cylindrical surface 42 is greater than the diameter of the first bearing mating cylindrical surface 22, the third oil-swinging hole 41 is longer than the first oil-swinging hole 21. The end of the third oil-swinging hole 41 away from the built-in blind hole 12 has a greater linear velocity, resulting in a faster centrifugal motion of the lubricating oil in the third oil-swinging hole 41. This, in turn, increases the flow rate of the lubricating oil in the third oil-swinging hole 41, allowing more lubricating oil to be delivered to the bearing needle roller 43. This allows for different lubricating oil amounts to be delivered to meet different lubrication requirements, achieving a better lubrication effect.

[0046] The amount of lubricating oil delivered by the third oil-swing hole 41 is greater than the amount of lubricating oil delivered by the first oil-swing hole 21. Therefore, the third oil-swing hole 41 is arranged on the side of the first oil-swing hole 21 close to the opening of the built-in blind hole 12. The lubricating oil entering through the opening of the built-in blind hole 12 can be supplied to the third oil-swing hole 41 first, reducing the lubricating oil flow between the third oil-swing hole 41 and the first oil-swing hole 21 in the built-in blind hole 12, thereby reducing the lubricating oil flow between the third oil-swing hole 41 and the first oil-swing hole 21 in the built-in blind hole 12, playing a role in reducing the flow resistance of the lubricating oil, reducing the influence of the resistance on the lubricating oil delivery, and playing a role in ensuring the lubrication effect.

[0047] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present invention.

Claims

1. An integrated clutch shaft structure, characterized in that: The invention comprises a shaft body (11), wherein a built-in blind hole (12) is provided in the shaft body (11), wherein the built-in blind hole (12) is connected to one end of the shaft body (11), wherein the shaft body (11) is provided with a first bearing matching cylindrical surface (22), an execution ring matching cylindrical surface (32) and a needle roller matching cylindrical surface (42), wherein a first oil-slinging hole (21), a second oil-slinging hole (31) and a third oil-slinging hole (41) are provided in the shaft body (11), wherein two ends of the first oil-slinging hole (21) are respectively connected to one end of the first bearing matching cylindrical surface (22) and the built-in blind hole (12), two ends of the second oil-slinging hole (31) are respectively connected to the outer peripheral surface of the execution ring matching cylindrical surface (32) and the built-in blind hole (12), and two ends of the third oil-slinging hole (41) are respectively connected to the outer peripheral surface of the needle roller matching cylindrical surface (42) and the built-in blind hole (12).

2. The integrated clutch shaft structure according to claim 1, characterized in that: The first bearing fitting cylindrical surface (22), the execution ring fitting cylindrical surface (32) and the needle roller fitting cylindrical surface (42) are arranged in sequence along the axial direction of the shaft body (11); the diameter of the shaft body (11) at the execution ring fitting cylindrical surface (32) is larger than the diameter of the shaft body (11) at the first bearing fitting cylindrical surface (22) and smaller than the diameter of the shaft body (11) at the needle roller fitting cylindrical surface (42); the needle roller fitting cylindrical surface (42) is located on the side of the first bearing fitting cylindrical surface (22) close to the opening of the built-in blind hole (12).

3. The integrated clutch shaft structure according to claim 1, characterized in that: The shaft body (11) is fixedly connected with a plurality of petal teeth (13), and the plurality of petal teeth (13) are evenly distributed along the circumference of the shaft body (11). The petal teeth (13) are located between the needle roller matching cylindrical surface (42) and the execution ring matching cylindrical surface (32). The petal teeth (13) are provided with clamping surfaces (14) on both sides along the circumference of the shaft body (11).

4. The integrated clutch shaft structure according to claim 3, characterized in that: The clamping surface (14) is arranged in an inclined manner, and the width of the petal teeth (13) gradually increases in a direction away from the needle roller matching cylindrical surface (42).

5. The integrated clutch shaft structure according to claim 4, characterized in that: The width of the petal teeth (13) gradually increases in a direction away from the shaft body (11).

6. The integrated clutch shaft structure according to claim 3, characterized in that: The shaft body (11) is fixedly connected with a spring support plate (15), and the spring support plate (15) is located between the petal teeth (13) and the needle roller matching cylindrical surface (42).

7. The integrated clutch shaft structure according to claim 1, characterized in that: The shaft body (11) is equipped with an oil plug, which is located at the opening of the built-in blind hole (12).

8. The integrated clutch shaft structure according to claim 7, characterized in that: The oil plug comprises a connecting ring (61), a supporting ring (62) and an oil plugging plate (63). The supporting ring (62) is fixedly connected to one end of the connecting ring (61) close to the third oil-slinging hole (41) and the oil plugging plate (63), respectively. The connecting ring (61) is fixedly arranged on the inner wall of the built-in blind hole (12). The cross section of the supporting ring (62) is arc-shaped. The oil plugging plate (63) is provided with an oil inlet hole (64) in the middle.

9. The integrated clutch shaft structure according to claim 1, characterized in that: The shaft body (11) is provided with a spline (16).

10. The integrated clutch shaft structure according to claim 1, characterized in that: The shaft body (11) is provided with a second bearing fitting cylindrical surface (51), and the execution ring fitting cylindrical surface (32) and the needle roller fitting cylindrical surface (42) are located between the first bearing fitting cylindrical surface (22) and the second bearing fitting cylindrical surface (51).

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