Split type inner ball cage and rubber sleeve

Abstract

The utility model discloses a split type inner ball cage and a rubber sleeve, and relates to the technical field of inner ball cages, when a first sealing sleeve and a second sealing sleeve are fixed on the inner ball cage through a fastening ring, the first sealing sleeve and the second sealing sleeve are respectively attached to and cover two ends of the inner ball cage to provide basic sealing, and the rubber sleeve is fixed on the inner ball cage. Then the sealing air bag sleeve is inflated through an air one-way channel formed by the air pipe and the one-way valve, the sealing air bag sleeve expands, the outer wall of one side of the sealing air bag sleeve can be tightly attached to the outer walls of the two ends of the inner ball cage, and tiny gaps generated between the first sealing sleeve and the inner ball cage and between the second sealing sleeve and the inner ball cage in the using process can be compensated through inflation; when the protection rubber sleeve deforms, the sealing air bag sleeve dynamically compensates the gap, the good sealing effect can be achieved, the probability that outside dust and sundries enter the inner ball cage through the gap is greatly reduced, lubricating grease is well protected, stable use of the inner ball cage is guaranteed, and the service life of the inner ball cage is prolonged. And the service life of the inner ball cage is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of inner ball cage technology, specifically to a split-type inner ball cage and rubber sleeve. Background Technology

[0002] The inner CV joint is one of the core components of the automotive transmission system. Its technical name is constant velocity joint. Its two ends are connected to the gearbox differential and the outer CV joint, respectively, and it is responsible for transmitting power to the outer CV joint. A dust cover is installed on the outside of the moving end of the inner CV joint to protect the internal grease and prevent contaminants from entering.

[0003] Most existing dust covers for inner ball cages are secured to the inner ball cage and sealed at both ends using clamping hoops. However, dust covers are mostly made of rubber, which ages over time and undergoes frequent deformation and torsion. This can easily create gaps between the dust covers and the inner ball cage, significantly reducing the seal. External dust and debris can easily enter the inner ball cage through these gaps, contaminating the lubricating grease, affecting the stable operation of the inner ball cage, and greatly reducing its service life.

[0004] In summary, the existing technology of inner ball cages has the problem that gaps can easily form between the external dust cover and the inner ball cage during long-term use. This allows external dust and debris to enter the inner ball cage through the gaps, contaminating the lubricating grease, affecting the stable use of the inner ball cage, and greatly reducing its service life. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type inner ball cage and rubber sleeve to solve the technical problem that in most existing inner ball cages, gaps easily form between the external dust cover and the inner ball cage during long-term use, allowing external dust and debris to enter the inner ball cage through the gaps, contaminating the lubricating grease, affecting the stable use of the inner ball cage, and greatly reducing the service life of the inner ball cage.

[0006] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0007] A type of split-type inner ball cage rubber sleeve,

[0008] Includes a sealing component, which is foldable and can form a covering seal on the movable end of the inner ball cage when unfolded;

[0009] The sealing assembly includes a protective rubber sleeve, a sealing sleeve one and a sealing sleeve two respectively disposed at both ends of the protective rubber sleeve, a fastening ring movably disposed on the outer wall of the sealing sleeve one and the sealing sleeve two for fixing the sealing assembly to the inner ball cage, a limiting ring one disposed on the outer wall of the sealing sleeve one and the sealing sleeve two for positioning the fastening ring, a limiting ring two disposed on the inner wall of the sealing sleeve one and the sealing sleeve two, a sealing airbag sleeve laid inside the limiting ring two, an air tube disposed on the outer wall of the sealing sleeve one and the sealing sleeve two, a one-way valve disposed at the end of the air tube, and a flow channel opened inside the sealing sleeve one and the sealing sleeve two for connecting the sealing airbag sleeve and the air tube.

[0010] Preferably, the protective sleeve is shaped like a frustum, and the second limiting ring and the fastening ring are on the same horizontal plane.

[0011] Preferably, the movable end of the fastening ring is provided with a pressure plate, and the pressure plate is provided with a detachable locking member, which is used to fix the movable end of the fastening ring.

[0012] Preferably, the locking element includes a bolt and a nut.

[0013] Preferably, the protective sleeve has several sets of spaced heat exchange rings embedded inside, and the heat exchange rings are located at the foldable part of the sealing assembly.

[0014] Preferably, a heat-conducting fin one is arranged around one side of the heat exchange ring, and the heat-conducting fin one is located inside the protective rubber sleeve; a heat-conducting fin two is arranged around the other side of the heat exchange ring, and the heat-conducting fin two is in contact with the outside air.

[0015] A split-type inner ball cage further includes a bell-shaped cover, the outer wall of which is in contact with the inner wall of a sealing sleeve, and an output shaft is provided at one end of the bell-shaped cover.

[0016] Preferably, a retainer is movably disposed inside the other end of the bell-shaped cover, and a star-shaped sleeve is movably disposed inside the retainer. An input shaft is inserted into the inside of the star-shaped sleeve, and the outer wall of the input shaft is in contact with the inner wall of the second sealing sleeve. An internal spline is provided on the inner wall of the star-shaped sleeve for connecting with the input shaft.

[0017] Preferably, the outer wall of the star-shaped sleeve is provided with several sets of equidistant limiting grooves, and a steel ball is movably arranged inside the limiting groove.

[0018] Preferably, the outer wall of the retainer is provided with several sets of slots that match the steel ball, and the inner wall of the bell-shaped cover is provided with several sets of limiting grooves that match the steel ball.

[0019] The beneficial effects of this utility model are:

[0020] 1. In this utility model, when the fastening ring fixes the sealing sleeve one and the sealing sleeve two on the inner ball cage, the sealing sleeve one and the sealing sleeve two respectively fit and cover the two ends of the inner ball cage, providing a basic seal. Then, the sealing airbag sleeve is inflated through the gas one-way channel formed by the air pipe and the one-way valve. The sealing airbag sleeve expands, and its outer wall on one side can form a tight fit with the outer walls of both ends of the inner ball cage. By inflating, the small gaps that occur between the sealing sleeve one, the sealing sleeve two and the inner ball cage during use can be compensated, forming a redundant sealing system. Furthermore, when the protective rubber sleeve deforms, the sealing airbag sleeve dynamically compensates for the gaps, which can play a good sealing role, greatly reducing the probability of external dust and debris entering the inner ball cage through the gaps, providing good protection for the lubricating grease, ensuring the stable use of the inner ball cage, and greatly improving the service life of the inner ball cage.

[0021] 2. In this utility model, when the internal temperature of the protective rubber sleeve rises, the first heat-conducting fin can quickly absorb and transfer the heat inside the protective rubber sleeve to the heat exchange ring, and then the heat exchange ring transfers the heat to the second heat-conducting fin. The second heat-conducting fin diffuses the heat to the external environment, realizing rapid heat transfer and exchange, maintaining the stability of the internal temperature of the sealing component, reducing the risk of thermal aging of the protective rubber sleeve, indirectly improving the sealing performance at both ends of the protective rubber sleeve, further extending the service life of the protective rubber sleeve, and reducing the degradation of the rubber material performance. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the inner ball cage in this utility model;

[0025] Figure 3 This is an exploded view of the inner ball cage in this utility model;

[0026] Figure 4 This is a schematic diagram of the sealing component structure in this utility model.

[0027] In the diagram: 1. Bell-shaped cover; 2. Output shaft; 3. Cage; 4. Star-shaped sleeve; 5. Input shaft; 6. Limiting groove one; 7. Steel ball; 8. Slot; 9. Limiting groove two; 10. Protective rubber sleeve; 11. Sealing sleeve one; 12. Sealing sleeve two; 13. Fastening ring; 14. Pressure plate; 15. Locking element; 16. Limiting ring one; 17. Limiting ring two; 18. Sealing airbag sleeve; 19. Air pipe; 20. One-way valve; 21. Flow channel; 22. Heat exchange ring; 23. Heat-conducting fin one; 24. Heat-conducting fin two. Detailed Implementation

[0028] 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.

[0029] like Figure 1-4 As shown, a rubber sleeve for a split-type inner ball cage.

[0030] Includes a sealing component, which is foldable and can form a covering seal on the movable end of the inner ball cage when unfolded;

[0031] The sealing assembly includes a protective sleeve 10, which is truncated cone-shaped. Sealing sleeve 11 and sealing sleeve 2 12 are respectively disposed at both ends of the protective sleeve 10. A fastening ring 13 is movably disposed on the outer wall of sealing sleeve 11 and sealing sleeve 2 12 to fix the sealing assembly to the inner ball cage. A limiting ring 16 is disposed on the outer wall of sealing sleeve 11 and sealing sleeve 2 12 to position the fastening ring 13. A limiting ring 2 17 is disposed on the inner wall of sealing sleeve 11 and sealing sleeve 2 12. The limiting ring 2 17 and the fastening ring 13 are on the same horizontal plane. A sealing ring is laid inside the limiting ring 2 17. The airbag sleeve 18 includes an air tube 19 located on the outer wall of the sealing sleeve 11 and the sealing sleeve 22, a one-way valve 20 located at the end of the air tube 19, and a flow channel 21 located inside the sealing sleeve 11 and the sealing sleeve 22 to connect the airbag sleeve 18 and the air tube 19. A pressure plate 14 is provided at the movable end of the fastening ring 13, and a detachable locking element 15 is provided on the pressure plate 14. The locking element 15 is used to fix the movable end of the fastening ring 13 and includes a bolt and a nut. The protective rubber sleeve 10 provides good sealing protection for the movable end of the inner ball cage, preventing external dust and debris from entering. The device employs a tapered frustum structure with a gradually changing diameter, which generates a uniform stress distribution during folding and forms a continuous sealing surface after unfolding. This ensures stress balance on the inner and outer walls of the rubber sleeve during bending, preventing rubber tearing due to stress concentration. During use, sealing sleeve 11 and sealing sleeve 12 are respectively fitted and covered at both ends of the inner ball cage, providing a basic seal. Then, sealing sleeve 11 and sealing sleeve 12 are further fixed to the inner ball cage by fastening ring 13. After fixing, the operator can inflate the sealing airbag sleeve 18 through the one-way gas channel formed by air pipe 19 and one-way valve 20. When the bladder sleeve 18 expands, one side of its outer wall can fit tightly against the outer walls of both ends of the inner ball cage, thereby compensating for the small gaps between the sealing sleeve 11, the sealing sleeve 2 12 and the inner ball cage, forming a redundant sealing system. When the protective rubber sleeve 10 deforms, the sealing airbag sleeve 18 dynamically compensates for the gaps, which can play a good sealing role. The fastening ring 13 is detachably fixed by the pressure plate 14 and bolts and nuts, which facilitates the installation and replacement of the sealing components. The limiting ring 16 prevents the fastening ring 13 from moving axially, and the limiting ring 2 17 fixes the position of the sealing airbag sleeve 18 to ensure the stability of the sealing structure.

[0032] In this embodiment, specifically, a plurality of spaced heat exchange rings 22 are embedded inside the protective sleeve 10, and the heat exchange rings 22 are located at the foldable part of the sealing assembly. A heat-conducting fin 23 is arranged around one side of the heat exchange ring 22, and the heat-conducting fin 23 is located inside the protective sleeve 10. A heat-conducting fin 24 is arranged around the other side of the heat exchange ring 22, and the heat-conducting fin 24 is in contact with the outside air. When the device is in use, the high-speed rotation of the internal components of the inner ball cage will cause the internal temperature of the protective sleeve 10 to rise. At this time, the heat-conducting fin 23 can quickly absorb and transfer the heat from the protective sleeve. The heat inside the protective sleeve 10 is transferred to the heat exchange ring 22, and then the heat exchange ring 22 transfers the heat to the heat-conducting fin 24. The heat-conducting fin 24 diffuses the heat to the external environment, realizing rapid heat transfer and exchange, maintaining the stability of the internal temperature of the sealing component, reducing the risk of thermal aging of the protective sleeve 10, indirectly improving the sealing performance at both ends of the protective sleeve 10, and further extending the service life of the protective sleeve 10. It should be noted that the materials of the heat exchange ring 22, the heat-conducting fin 23, and the heat-conducting fin 24 should be elastic thermally conductive materials to adapt to the frequent deformation of the protective sleeve 10 during use.

[0033] A split-type inner ball cage further includes a bell-shaped cover 1, the outer wall of which is in contact with the inner wall of a sealing sleeve 11. An output shaft 2 is provided at one end of the bell-shaped cover 1, and a retainer 3 is movably disposed inside the other end of the bell-shaped cover 1. A star-shaped sleeve 4 is movably disposed inside the retainer 3, and an input shaft 5 is inserted into the star-shaped sleeve 4. The outer wall of the input shaft 5 is in contact with the inner wall of the sealing sleeve 12. An internal spline is provided on the inner wall of the star-shaped sleeve 4 for connection with the input shaft 5. Several sets of equidistantly distributed limiting grooves 6 are provided on the outer wall of the star-shaped sleeve 4, and steel balls 7 are movably disposed inside the limiting grooves 6. Several sets of retaining grooves 8 that match the steel balls 7 are provided on the outer wall of the retainer 3, and several sets of limiting grooves 2 that match the steel balls 7 are provided on the inner wall of the bell-shaped cover 1. 9. The bell-shaped housing 1 is a split-type inner CV joint main structure, ensuring the stability of other components of the split-type inner CV joint during operation. The output shaft 2 is connected to the outer CV joint, and the input shaft 5 is connected to the gearbox differential, ensuring that power can be transmitted smoothly and efficiently from the gearbox. The cage 3 and the star sleeve 4 can rotate inside the bell-shaped housing 1. The cage 3 and the star sleeve 4 form a good limit for the steel ball 7, and the steel ball 7 is engaged with the bell-shaped housing 1. Thus, the inner CV joint plays the role of transmitting torque and adapting to angle changes. When the vehicle is driving, the angle between the drive shaft and the wheel will change due to uneven road surface or steering operation. The inner CV joint, through its internal steel ball 7 and cage 3 structure, can allow this angle change while maintaining continuous power transmission.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] 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 rubber sleeve for a split-type inner ball cage, characterized in that: Includes a sealing component, which is foldable and can form a covering seal on the movable end of the inner ball cage when unfolded; The sealing assembly includes a protective rubber sleeve (10), a sealing sleeve one (11) and a sealing sleeve two (12) respectively disposed at both ends of the protective rubber sleeve (10), a fastening ring (13) movably disposed on the outer wall of the sealing sleeve one (11) and the sealing sleeve two (12) for fixing the sealing assembly to the inner ball cage, a limiting ring one (16) disposed on the outer wall of the sealing sleeve one (11) and the sealing sleeve two (12) for positioning the fastening ring (13), and a limiting ring one (16) disposed on the sealing sleeve. The first (11) and the second (12) of the sealing sleeve are a limiting ring (17), the second (18) of the sealing sleeve is laid inside the second (17), the first (11) of the sealing sleeve is an air tube (19) on the outer wall of the first (11) and the second (12) of the sealing sleeve is a one-way valve (20) at the end of the air tube (19), and the second (12) of the sealing sleeve is a flow channel (21) for connecting the sealing air tube (18) and the air tube (19).

2. The rubber sleeve of the split-type inner ball cage according to claim 1, characterized in that, The protective sleeve (10) is shaped like a truncated cone, and the limiting ring (17) and the fastening ring (13) are on the same horizontal plane.

3. The rubber sleeve of the split-type inner ball cage according to claim 1, characterized in that, The movable end of the fastening ring (13) is provided with a pressure plate (14), and the pressure plate (14) is provided with a detachable locking member (15), which is used to fix the movable end of the fastening ring (13).

4. The rubber sleeve of the split-type inner ball cage according to claim 3, characterized in that, The locking element (15) includes a bolt and a nut.

5. The rubber sleeve of a split-type inner ball cage according to claim 1, characterized in that, The protective sleeve (10) is embedded with several sets of spaced heat exchange rings (22), and the heat exchange rings (22) are located at the foldable part of the sealing assembly.

6. The rubber sleeve of a split-type inner ball cage according to claim 5, characterized in that, One side of the heat exchange ring (22) is surrounded by a heat-conducting fin (23), and the heat-conducting fin (23) is located inside the protective sleeve (10). The other side of the heat exchange ring (22) is surrounded by a heat-conducting fin (24), and the heat-conducting fin (24) is in contact with the outside air.

7. A split-type inner ball cage, characterized in that, The rubber sleeve of the split inner ball cage according to any one of claims 1-6 also includes a bell-shaped cover (1), and the outer wall of the bell-shaped cover (1) is in contact with the inner wall of the sealing sleeve (11), and an output shaft (2) is provided at one end of the bell-shaped cover (1).

8. A split-type inner ball cage according to claim 7, characterized in that, A retainer (3) is movably disposed inside the other end of the bell-shaped cover (1), and a star-shaped sleeve (4) is movably disposed inside the retainer (3). An input shaft (5) is inserted into the star-shaped sleeve (4), and the outer wall of the input shaft (5) is in contact with the inner wall of the sealing sleeve (12). An internal spline is provided on the inner wall of the star-shaped sleeve (4) for connecting with the input shaft (5).

9. A split-type inner ball cage according to claim 8, characterized in that, The outer wall of the star-shaped sleeve (4) is provided with several sets of equidistantly distributed limiting grooves (6), and steel balls (7) are movably arranged inside the limiting grooves (6).

10. A split-type inner ball cage according to claim 8, characterized in that, The outer wall of the retainer (3) is provided with several sets of slots (8) that match the steel ball (7), and the inner wall of the bell-shaped cover (1) is provided with several sets of limiting slots (9) that match the steel ball (7).

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