Wear-resistant driving shaft assembly inner ball cage

Abstract

The utility model discloses a wear-resistant driving shaft assembly inner ball cage, and belongs to the field of inner ball cages. The device comprises an air inlet cover and an air outlet cover which are fixedly arranged on the surface of an inner ball cage shell, fan blades are covered with the air inlet cover and the air outlet cover, the fan blades are separated from the external environment, splashing sundries in the automobile running process can firstly collide with the air outlet cover and the air inlet cover, then the impact force of the sundries is prevented from making direct contact with the fan blades, and the service life of the fan blades is prolonged. Most sundries are difficult to enter the air outlet cover and the inner space of the air inlet cover, the fan blades are protected through the air inlet cover and the air outlet cover, and the heat dissipation effect of the fan blades is guaranteed; a plurality of air inlet grooves are formed in the surface of the inner spherical cage shell, and the depth of one side, close to the air inlet cover, of each air inlet groove is larger than that of the other side, so that more air around the inner spherical cage of the driving shaft assembly can be guided to slide towards one side of the air inlet cover, the amount of air passing through the surface of the inner spherical cage shell is increased, and more heat in the inner spherical cage shell is taken away; the heat dissipation effect is improved, and heating reduction of lubricating grease in the inner ball cage shell is avoided.

Description

A wear-resistant drive shaft assembly inner ball cage Technical Field

[0001] This utility model relates to the field of inner ball cages, and in particular to a wear-resistant inner ball cage for a drive shaft assembly. Background Technology

[0002] The inner ball cage of the drive shaft assembly is a key component in the automotive transmission system. It is mainly used to connect the gearbox and the drive wheels, transmit torque, and compensate for the angular and axial displacements generated during vehicle movement. It generally includes a bell-shaped housing, a star-shaped sleeve, steel balls, a dust cover, and grease, with the grease usually located between the star-shaped sleeve and the dust cover.

[0003] The reference patent is titled: "A Heat-Dissipating and Wear-Resistant Inner Ball Cage for a Drive Shaft Assembly" (Patent Publication No.: CN222479271U). The semi-annular plates are fixedly installed inside the annular grooves on the surface of the inner ball cage housing via two semi-annular plates, fan blades, and annular grooves. The two semi-annular plates are connected by a magnetic connecting strip. The fan blades are fixed to the surface of the semi-annular plates. During the use of the inner ball cage of the drive shaft assembly, the fan blades will rotate, causing the surrounding air to flow rapidly, accelerating the heat flow, and achieving heat dissipation.

[0004] However, the following problems exist when implementing the above technical solutions: it is difficult to ensure that the fan blades will not be damaged during use and that there is continuous airflow between adjacent fan blades in the internal CV joint of the drive shaft assembly; during the operation of a car, it is difficult to avoid the splashing of road debris. At this time, the internal CV joint of the drive shaft assembly at the bottom is inevitably impacted by the debris, which may cause the fan blades to deform or break, affecting the airflow. In addition, some debris may be fixed after splashing between the fan blades. The fixed debris will increase the load on the internal CV joint of the drive shaft assembly and block its heat dissipation area, reducing the heat dissipation efficiency.

[0005] In summary, this utility model proposes a wear-resistant drive shaft assembly inner ball cage. Summary of the Invention

[0006] This invention provides a wear-resistant inner ball cage for drive shaft assembly, which can solve the problem that the fan blades used on the surface of the inner ball cage of the drive shaft assembly in the prior art are easily hit by flying debris during use, and the fan blades may be deformed or broken, affecting the heat dissipation effect.

[0007] A wear-resistant drive shaft assembly inner ball cage includes an inner ball cage housing, a plurality of fan blades fixedly disposed on the surface of the inner ball cage housing, and a protective mechanism disposed between the inner ball cage housing and the fan blades, the protective mechanism comprising:

[0008] An air outlet hood and an air inlet hood are fixedly mounted on the surface of the inner ball cage shell. The air outlet hood and the air inlet hood are symmetrically arranged relative to the fan blades. A connecting component is provided between the air outlet hood and the air inlet hood. The connecting component is rotatably mounted inside the air outlet hood.

[0009] A fixing component is disposed between the air outlet hood and the inner ball cage shell. The fixing component is slidably disposed inside the air outlet hood, and the air inlet hood and the inner ball cage shell are fixedly connected by the fixing component.

[0010] Several air inlet slots are provided, all of which are formed on the surface of the inner spherical cage shell. The depth of the air inlet slots increases progressively, with the depth of the air inlet slot on the side closer to the air inlet shroud being greater than the depth on the other side.

[0011] Optionally, the air inlet shroud includes a plurality of grilles, which are arranged in a ring array on the surface of the inner spherical cage housing.

[0012] Optionally, the air outlet hood includes several bent rods, several connecting rods, and a central ring. The bent rods, central ring, and connecting rods are fixed in sequence. The distance between the bent rods and the air inlet hood is greater than the distance between the connecting rods and the air inlet hood. The projection of the bent rods is S-shaped.

[0013] Optionally, the connecting assembly includes several connecting shafts fixedly disposed on the surface of the air outlet hood, the connecting shafts being hook-shaped, several connecting grooves being formed on the surface of the air inlet hood, the connecting shafts being adapted to the connecting grooves, and a retaining ring being slidably connected inside the air inlet hood, the retaining ring being adapted to the connecting shafts.

[0014] Optionally, the locking ring includes a base ring and a protruding ring, the protruding ring being adapted to the connecting rod.

[0015] Optionally, a connecting block is fixedly connected to the surface of the air inlet shroud, and the locking ring further includes an operating rod, an operating shaft is rotatably connected inside the operating rod, and the operating shaft is threadedly connected to the connecting block.

[0016] Optionally, the fixing component includes a fixing groove formed on the surface of the inner ball cage shell, the fixing groove contacting the air outlet hood or air inlet hood, a plurality of locking grooves formed on the surface of the inner ball cage shell, a plurality of locking rods slidably connected inside the air outlet hood and the air inlet hood, the locking rods and locking grooves being adapted to each other, and a synchronization component being provided between the plurality of locking rods, the synchronization component being slidably connected to the locking rods.

[0017] Optionally, the synchronization component includes a synchronization ring rotatably disposed inside the air inlet or air outlet hood, a plurality of protruding rods fixedly connected to the surface of the synchronization ring, the protruding rods being slidably connected to a locking rod, and a synchronization spring being fixedly connected between the locking rod and the air outlet or air inlet hood.

[0018] Optionally, a dust cover is fixedly provided on the surface of the inner ball cage shell, and a drive shaft is fixedly connected to the end of the dust cover away from the inner ball cage shell, and the end of the dust cover away from the drive shaft is fitted with a fixing groove.

[0019] Optionally, a semi-annular plate is fixedly connected to the surface of the fan blade, and a connecting post is threadedly connected inside the semi-annular plate, the connecting post being threadedly connected to the inner ball cage shell.

[0020] This utility model provides a wear-resistant drive shaft assembly inner CV joint, including an air inlet shroud and an air outlet shroud fixedly mounted on the surface of the inner CV joint housing. The air inlet shroud and air outlet shroud cover the fan blades, isolating them from the external environment. During vehicle operation, debris splashing will first collide with the air outlet shroud and air inlet shroud, thus preventing the impact force of the debris from directly contacting the fan blades. Moreover, most debris is difficult to enter the internal space of the air outlet shroud and air inlet shroud. The air inlet shroud and air outlet shroud protect the fan blades, ensuring the heat dissipation effect of the fan blades. In addition, several air inlet grooves are formed on the surface of the inner CV joint housing, and the depth of the air inlet grooves on the side closer to the air inlet shroud is greater than that on the other side. This can guide more air around the inner CV joint of the drive shaft assembly to slide towards the air inlet shroud, increasing the amount of air passing through the surface of the inner CV joint housing, carrying away more heat from inside the inner CV joint housing, further improving the heat dissipation effect, and preventing the lubricating grease inside the inner CV joint housing from being reduced by heat. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the inner ball cage structure of a wear-resistant drive shaft assembly provided by this utility model;

[0022] Figure 2 is an exploded three-dimensional view of the inner ball cage shell provided by this utility model;

[0023] Figure 3 is an enlarged view of a partial structure at point A in Figure 2 provided by this utility model;

[0024] Figure 4 is an enlarged view of the partial structure at point B in Figure 2 provided by this utility model;

[0025] Figure 5 is an enlarged view of a partial structure at point C in Figure 2 provided by this utility model;

[0026] Figure 6 is a three-dimensional structural cross-sectional view of the inner ball cage shell provided by this utility model;

[0027] Figure 7 is an enlarged view of the partial structure at point D in Figure 6 provided by this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Inner ball cage shell; 2. Fan blade; 3. Air outlet hood; 4. Air inlet hood; 5. Air inlet slot; 6. Grille; 7. Bend rod; 8. Connecting rod; 9. Connecting shaft; 10. Connecting groove; 11. Base ring; 12. Connecting block; 13. Operating lever; 14. Operating shaft; 15. Fixing groove; 16. Locking rod; 17. Synchronization ring; 18. Synchronization spring; 19. Dust cover. Detailed Implementation

[0030] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0031] As shown in Figures 1 to 7, the wear-resistant drive shaft assembly inner ball cage provided in this embodiment of the present invention includes an inner ball cage housing 1, a plurality of fan blades 2 fixedly disposed on the surface of the inner ball cage housing 1, and a protective mechanism disposed between the inner ball cage housing 1 and the fan blades 2, the protective mechanism including:

[0032] Air outlet hood 3 and air inlet hood 4 are fixedly mounted on the surface of the inner ball cage shell 1. The air outlet hood 3 and air inlet hood 4 are symmetrically arranged relative to the fan blade 2. A connecting component is provided between the air outlet hood 3 and air inlet hood 4. The connecting component is rotatably mounted inside the air outlet hood 3.

[0033] A fixing component is provided between the air outlet hood 3 and the inner ball cage housing 1. The fixing component is slidably disposed inside the air outlet hood 3, and the air inlet hood 4 and the inner ball cage housing 1 are fixedly connected by the fixing component.

[0034] A plurality of air inlet slots 5 are provided on the surface of the inner ball cage shell 1. The depth of the air inlet slots 5 increases progressively, with the depth of the air inlet slot 5 on the side closer to the air inlet hood 4 being greater than the depth on the other side.

[0035] In summary, the wear-resistant drive shaft assembly inner ball cage provided by this utility model embodiment includes an air inlet shroud 4 and an air outlet shroud 3 fixedly disposed on the surface of the inner ball cage housing 1. The air inlet shroud 4 and the air outlet shroud 3 cover the fan blade 2, isolating the fan blade 2 from the external environment. During vehicle operation, debris splashing will first collide with the air outlet shroud 3 and the air inlet shroud 4, thereby preventing the impact force of the debris from directly contacting the fan blade 2. Moreover, most debris is difficult to enter the internal space of the air outlet shroud 3 and the air inlet shroud 4. The air inlet shroud 4 and the air outlet shroud 3 protect the fan blade 2, ensuring the heat dissipation effect of the fan blade 2. Furthermore, a number of air inlet grooves 5 are provided on the surface of the inner ball cage housing 1, and the depth of the air inlet groove 5 on the side closer to the air inlet shroud 4 is greater than that on the other side. This can guide more air around the inner ball cage of the drive shaft assembly to slide towards the air inlet shroud 4, increasing the amount of air passing through the surface of the inner ball cage housing 1, carrying away more heat from inside the inner ball cage housing 1, further improving the heat dissipation effect, and preventing the lubricating grease inside the inner ball cage housing 1 from being reduced by heat.

[0036] In some specific implementations, the air inlet hood 4 includes a plurality of grilles 6, which are arranged in a ring array on the surface of the inner spherical cage shell 1; the array of grilles 6 divides the air inlet hood 4 into areas, thereby improving air circulation in a larger area;

[0037] In some specific implementations, the air outlet hood 3 includes several bent rods 7, several connecting rods 8, and a central ring. The bent rods 7, the central ring, and the connecting rods 8 are fixed in sequence. The distance between the bent rods 7 and the air inlet hood 4 is greater than the distance between the connecting rods 8 and the air inlet hood 4. The projection of the bent rods 7 is S-shaped. The coverage area of ​​the air outlet hood 3 can be increased by the bent rods 7, the connecting rings, and the connecting rods 8. Furthermore, the bent rods 7 can guide the airflow path to twist, increasing the length of the flow path.

[0038] In some specific embodiments, the connecting assembly includes a plurality of connecting shafts 9 fixedly disposed on the surface of the air outlet shroud 3, the connecting shafts 9 being hook-shaped, a plurality of connecting grooves 10 being formed on the surface of the air inlet shroud 4, the connecting shafts 9 being adapted to the connecting grooves 10, and a retaining ring being slidably connected inside the air inlet shroud 4, the retaining ring being adapted to the connecting shafts 9; by sliding the retaining ring, the retaining ring can be embedded inside the connecting shafts 9, preventing the air outlet shroud 3 and the air inlet shroud 4 from separating;

[0039] In a further embodiment, the locking ring includes a base ring 11 and a protruding ring, the protruding ring being adapted to the connecting rod 8; by using base rings 11 and protruding rings of different sizes, the protruding ring at a specific position can be locked into the connecting shaft 9;

[0040] In a further embodiment, a connecting block 12 is fixedly connected to the surface of the air inlet shroud 4, and the retaining ring further includes an operating rod 13. An operating shaft 14 is rotatably connected inside the operating rod 13, and the operating shaft 14 is threadedly connected to the connecting block 12. By rotating the operating shaft 14, the distance between the connecting block 12 and the operating rod 13 can be reduced, thereby driving the retaining ring to rotate and restricting the connecting shaft 9 inside the connecting groove 10.

[0041] In some specific embodiments, the fixing component includes a fixing groove 15 formed on the surface of the inner ball cage shell, the fixing groove 15 contacting the air outlet hood 3 or the air inlet hood 4, the surface of the inner ball cage shell having a plurality of locking grooves, a plurality of locking rods 16 slidably connected inside the air outlet hood 3 and the air inlet hood 4, the locking rods 16 being adapted to the locking grooves, and a synchronization component being provided between the plurality of locking rods 16, the synchronization component being slidably connected to the locking rods 16; through the locking rods 16 sliding inside the air inlet hood 4 or the air outlet hood 3, the plurality of locking rods 16 can be made to protrude out of the air inlet hood 4 or the air outlet hood 3, causing the locking rods 16 to be embedded inside the locking grooves, thereby fixing the position of the inner ball cage shell 1 and the air outlet hood 3 or the air inlet hood 4;

[0042] In a further embodiment, the synchronization component includes a synchronization ring 17 rotatably disposed inside the air inlet shroud 4 or the air outlet shroud 3. A plurality of protruding rods are fixedly connected to the surface of the synchronization ring 17. The protruding rods are slidably connected to the locking rods 16. A synchronization spring 18 is fixedly connected between the locking rods 16 and the air outlet shroud 3 or the air inlet shroud 4. The protruding rods can squeeze the locking rods 16 to slide, thereby causing all the locking rods 16 to insert into the locking grooves.

[0043] In some specific implementations, a dust cover 19 is fixedly provided on the surface of the inner ball cage shell 1, and a drive shaft is fixedly connected to the end of the dust cover 19 away from the inner ball cage shell 1. The end of the dust cover 19 away from the drive shaft is fitted with the fixing groove 15.

[0044] In some specific implementations, a semi-annular plate is fixedly connected to the surface of the fan blade 2, and a connecting post is threadedly connected inside the semi-annular plate, and the connecting post is threadedly connected to the inner ball cage shell 1.

[0045] The working principle of this utility model:

[0046] During use, the inner ball cage of the drive shaft assembly rotates, causing the fan blades 2 to rotate, guiding the airflow into the air inlet slot 5, and flowing along the air inlet cover 4 to the air outlet cover 3.

[0047] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A wear-resistant drive shaft assembly inner ball cage, comprising an inner ball cage housing (1), wherein a plurality of fan blades (2) are fixedly disposed on the surface of the inner ball cage housing (1), characterized in that, A protective mechanism is provided between the inner ball cage shell (1) and the fan blade (2). The protective mechanism includes: an air outlet hood (3) and an air inlet hood (4). The air outlet hood (3) and the air inlet hood (4) are both fixedly installed on the surface of the inner ball cage shell (1). The air outlet hood (3) and the air inlet hood (4) are symmetrically arranged relative to the fan blade (2). A connecting component is provided between the air outlet hood (3) and the air inlet hood (4). The connecting component is rotatably installed inside the air outlet hood (3). A fixing component is installed between the air outlet hood (3) and the inner ball cage shell (1). The fixing component is slidably installed inside the air outlet hood (3). The air inlet hood (4) and the inner ball cage shell (1) are fixedly connected by the fixing component. A plurality of air inlet slots (5) are provided on the surface of the inner ball cage shell (1). The depth of the air inlet slots (5) increases. The depth of the air inlet slot (5) on the side closer to the air inlet hood (4) is greater than the depth on the other side.

2. The wear-resistant drive shaft assembly inner ball cage as described in claim 1, characterized in that, The air inlet shroud (4) includes several grilles (6), which are arranged in a ring array on the surface of the inner spherical cage shell (1).

3. The wear-resistant drive shaft assembly inner ball cage as described in claim 1, characterized in that, The air outlet hood (3) includes several bent rods (7), several connecting rods (8) and a transfer ring. The bent rods (7), the transfer ring and the connecting rods (8) are fixed in sequence. The distance between the bent rods (7) and the air inlet hood (4) is greater than the distance between the connecting rods (8) and the air inlet hood (4). The projection of the bent rods (7) is S-shaped.

4. The wear-resistant drive shaft assembly inner ball cage as described in claim 1, characterized in that, The connecting assembly includes several connecting shafts (9) fixedly disposed on the surface of the air outlet hood (3). The connecting shafts (9) are hook-shaped. Several connecting grooves (10) are provided on the surface of the air inlet hood (4). The connecting shafts (9) are adapted to the connecting grooves (10). A retaining ring is slidably connected inside the air inlet hood (4). The retaining ring is adapted to the connecting shafts (9).

5. The wear-resistant drive shaft assembly inner ball cage as described in claim 4, characterized in that, The locking ring includes a base ring (11) and a protruding ring, the protruding ring being adapted to the connecting rod (8).

6. The wear-resistant drive shaft assembly inner ball cage as described in claim 4, characterized in that, The air inlet shroud (4) is fixedly connected to a connecting block (12), and the locking ring also includes an operating rod (13). An operating shaft (14) is rotatably connected inside the operating rod (13), and the operating shaft (14) is threadedly connected to the connecting block (12).

7. The wear-resistant drive shaft assembly inner ball cage as described in claim 1, characterized in that, The fixing component includes a fixing groove (15) formed on the surface of the inner ball cage shell. The fixing groove (15) contacts the air outlet hood (3) or the air inlet hood (4). The surface of the inner ball cage shell is provided with several locking grooves. Several locking rods (16) are slidably connected inside the air outlet hood (3) and the air inlet hood (4). The locking rods (16) are adapted to the locking grooves. A synchronization component is provided between the several locking rods (16). The synchronization component is slidably connected to the locking rods (16).

8. The wear-resistant drive shaft assembly inner ball cage as described in claim 7, characterized in that, The synchronization component includes a synchronization ring (17) rotatably disposed inside the air inlet hood (4) or the air outlet hood (3). Several protruding rods are fixedly connected to the surface of the synchronization ring (17). The protruding rods are slidably connected to the locking rod (16). A synchronization spring (18) is fixedly connected between the locking rod (16) and the air outlet hood (3) or the air inlet hood (4).

9. The wear-resistant drive shaft assembly inner ball cage as described in claim 7, characterized in that, A dust cover (19) is fixedly provided on the surface of the inner ball cage shell (1). A drive shaft is fixedly connected to the end of the dust cover (19) away from the inner ball cage shell (1). The end of the dust cover (19) away from the drive shaft is fitted with the fixing groove (15).

10. The wear-resistant drive shaft assembly inner ball cage as described in claim 1, characterized in that, A semi-annular plate is fixedly connected to the surface of the fan blade (2), and a connecting column is threaded inside the semi-annular plate. The connecting column is threaded to the inner ball cage shell (1).

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