Inner ball cage for vehicle driving shaft, driving shaft and vehicle

Abstract

The utility model discloses an inner constant velocity joint for a vehicle driving shaft, the driving shaft and a vehicle, the inner constant velocity joint comprises a shaft rod, one end of the shaft rod is provided with a ball, and the other end of the shaft rod is connected with a wheel; the shell is arranged at one end of the shaft rod and connected with the power output end of a vehicle, a containing cavity suitable for containing the balls is formed in the shell, a rotating groove is formed in the inner wall of the containing cavity, and the rotating direction of the rotating groove is opposite to the rotating direction of wheels. According to the inner ball cage disclosed by the utility model, the rotating groove opposite to the rotating direction of the wheel is formed in the shell, so that the lubricating grease can flow towards the bottom wall of the accommodating cavity through the rotating groove in the process of swinging along with the inner ball cage, and more lubricating grease can be retained in the accommodating cavity; therefore, parts in the inner ball cage can be effectively lubricated, abrasion among the parts is reduced, and the service life of the parts in the inner ball cage is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of household electrical appliances, in particular to an inner ball cage for a vehicle drive shaft, a drive shaft and a vehicle. Background Art

[0002] In the related technology, the inner ball cage of the drive shaft of most car models adopts an axially movable tripod universal joint structure and is injected with grease of specified specifications. The grease is in the high-speed rotating inner ball cage and swings with the inner ball cage. Especially at high temperatures, the fluidity of the grease increases. In the coordinates of the entire vehicle, the grease tends to flow to the dust cover end, causing the amount of grease in the inner ball cage accommodating cavity to decrease. In some cases, the components cannot be effectively lubricated, resulting in wear of the components, which seriously affects the service life of the drive shaft. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an inner ball cage for a vehicle drive shaft. According to the inner ball cage of the utility model, a gyration groove is arranged in the shell in the opposite direction of the wheel rotation, so that the grease can flow toward the bottom wall of the accommodating cavity through the gyration groove during the swinging of the inner ball cage, so that more grease can be retained in the accommodating cavity, thereby ensuring that the parts in the inner ball cage can be effectively lubricated, reducing the wear between the parts, and extending the service life of the parts inside the inner ball cage.

[0004] The utility model also provides a driving shaft with the inner ball cage.

[0005] The utility model also provides a driving shaft with the inner ball cage.

[0006] The utility model also provides a vehicle with the above-mentioned drive shaft. The inner ball cage for the vehicle drive shaft according to the utility model comprises: a shaft, one end of which is provided with a ball, and the other end of which is connected to a wheel; a shell, which is provided at one end of the shaft and connected to a power output end of the vehicle, and a receiving cavity suitable for accommodating the ball is formed in the shell, and a gyration groove is formed on the inner wall of the gyration groove, and the rotation direction of the gyration groove is opposite to the rotation direction of the wheel.

[0007] According to the utility model, the inner ball cage is provided with a accommodating chamber through the inside of the shell, and the grease is arranged in the accommodating chamber and is suitable for lubricating the internal parts of the accommodating chamber, and a swirl groove is formed on the inner wall of the accommodating chamber, and the rotation direction of the swirl groove is opposite to the rotation direction of the wheel when the vehicle is traveling forward. When the vehicle is traveling forward, the grease is swung along with the inner ball cage, and the grease is swung onto the inner wall of the accommodating chamber and can flow toward the bottom wall of the accommodating chamber through the swirl groove, so that more grease can be retained in the accommodating chamber, thereby ensuring that the parts in the inner ball cage can be effectively lubricated, reducing the wear between the parts, and extending the service life of the internal parts of the inner ball cage.

[0008] According to some embodiments of the present invention, the convolution groove is inclined in a circumferentially extending direction away from the bottom wall of the accommodating cavity.

[0009] According to some embodiments of the utility model, a plurality of ball receiving grooves which are arranged at intervals in the circumferential direction and extend in the axial direction are formed in the shell, and each of the shaft rods is provided with a ball which corresponds one to one with the ball receiving groove; wherein the ball receiving groove is provided with the convolution groove on the radial inner wall.

[0010] According to some embodiments of the present invention, the convolution grooves are configured in multiple numbers and are arranged in sequence along the axial direction of the shell.

[0011] According to some embodiments of the utility model, the inner cage further comprises: a dust cover, which is arranged at the open end of the accommodating cavity and is suitable for closing the accommodating cavity.

[0012] According to some embodiments of the present invention, the dust cover is configured as a rubber piece.

[0013] According to some embodiments of the utility model, the inner cage further comprises: a sealing member, wherein the sealing member is arranged between the dust cover and the shell.

[0014] According to some embodiments of the present invention, the outer peripheral surface of the shell has a recessed portion which is recessed radially inwards, and the recessed portion extends axially from one end of the shell to the other end.

[0015] The drive shaft according to the present utility model is briefly described below.

[0016] According to the utility model, the driving shaft is provided with the inner ball cage described in any one of the above embodiments. Since the driving shaft according to the utility model is provided with the inner ball cage described in any one of the above embodiments, the reliability and stability of the driving shaft according to the present application during operation are higher, and the service life of the driving shaft is longer.

[0017] The vehicle according to the present utility model is briefly described below.

[0018] The vehicle according to the utility model is provided with a drive shaft as described in any one of the above embodiments. Since the vehicle according to the utility model is provided with a drive shaft as described in any one of the above embodiments, the vehicle according to the present application has higher stability and higher safety during operation.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic structural diagram of a drive shaft according to an embodiment of the utility model;

[0022] Figure 2 is a side view of a housing according to an embodiment of the utility model;

[0023] Figure 3 It is a front view of a housing according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100, driving shaft; 101, inner ball cage;

[0026] 11. shaft; 12. housing; 121. ball receiving groove; 122. recessed portion; 120. receiving cavity; 13. convolution groove;

[0027] 14. Ball; 16. Outer ball cage. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the related technology, the inner ball cage of the drive shaft of most models adopts an axially movable tripod universal joint structure and is injected with grease of specified specifications. The grease is in the high-speed rotating inner ball cage and swings with the inner ball cage. Especially at high temperatures, the fluidity of the grease increases. Under the coordinates of the entire vehicle, the grease tends to flow toward the dust cover end, causing the amount of grease in the inner ball cage accommodating cavity to decrease. In some cases, the components cannot be effectively lubricated, resulting in wear of the components, which seriously affects the service life of the drive shaft.

[0030] Reference below Figure 1-Figure 3 An inner ball cage for a vehicle drive shaft according to an embodiment of the utility model is described.

[0031] According to the utility model, the inner ball cage 101 for the vehicle drive shaft 100 includes: a shaft rod 11 and a shell 12, wherein a ball is arranged on one end of the shaft rod 11, and the other end of the shaft rod 11 is connected to the wheel; the shell 12 is arranged at one end of the shaft rod 11 and is connected to the power output end of the vehicle, and a receiving cavity 120 suitable for accommodating the ball is formed in the shell 12, and a gyratory groove 13 is formed on the inner wall of the gyratory groove 13, and the rotation direction of the gyratory groove 13 is opposite to the rotation direction of the wheel.

[0032] In some specific embodiments, the inner ball cage 101 is composed of a shaft 11, a shell 12 and other parts. A ball is arranged at one end of the shaft 11, and an outer ball cage 16 is arranged at the other end of the shaft 11. The outer ball cage 16 is connected to the wheel end of the vehicle. The shell 12 is arranged at the other end of the shaft 11 and cooperates with the ball 14 and is connected to the reducer or the gearbox. A receiving cavity 120 is formed inside the shell 12. The ball 14 can be movably accommodated in the receiving cavity 120. Grease is arranged in the receiving cavity 120 and is suitable for lubricating the internal parts of the receiving cavity 120. A gyratory groove is formed on the inner wall of the receiving cavity 120. 13, the rotation direction of the gyroscopic groove 13 is opposite to the rotation direction of the wheel when the vehicle is moving forward. When the vehicle is moving forward at high speed, the rotation speed of the housing 12 increases, and the amount of grease thrown is large. When the grease is thrown along with the inner ball cage 101, the grease is thrown onto the inner wall of the accommodating cavity 120 and can flow toward the bottom wall of the accommodating cavity 120 through the gyroscopic groove 13, so that more grease can be retained in the accommodating cavity 120, thereby ensuring that all parts in the inner ball cage 101 can be effectively lubricated, reducing the wear between parts, and extending the service life of the parts inside the inner ball cage 101. The utility model also proposes a drive shaft 100 with the above-mentioned inner ball cage 101.

[0033] According to the utility model, the inner ball cage 101 is formed with a housing 120 inside the housing 12, and the grease is arranged inside the housing 120 and is suitable for lubricating the internal parts of the housing 120. A gyration groove 13 is formed on the inner wall of the housing 120, and the rotation direction of the gyration groove 13 is opposite to the rotation direction of the wheel when the vehicle is traveling forward. When the vehicle is traveling forward, the grease is swung along with the inner ball cage 101, and the grease is swung onto the inner wall of the housing 120 and can flow toward the bottom wall of the housing 120 through the gyration groove 13, so that more grease can be retained in the housing 120, thereby ensuring that the parts in the inner ball cage 101 can be effectively lubricated, reducing the wear between the parts, and extending the service life of the internal parts of the inner ball cage 101. The utility model also proposes a drive shaft 100 having the above inner ball cage 101.

[0034] According to some embodiments of the utility model, the swirl groove 13 is inclined in the circumferential extension direction toward and away from the bottom wall of the accommodating cavity 120, so that the swirl groove 13 has a certain guiding effect, further ensuring that the grease entering the swirl groove 13 can flow to the bottom wall of the accommodating cavity 120, reducing the loss of grease.

[0035] According to some embodiments of the utility model, a plurality of ball receiving grooves 121 arranged at intervals in the circumferential direction and extending in the axial direction are formed in the shell 12, and each shaft rod 11 is provided with a ball corresponding to the ball receiving groove 121 one by one, and the ball can move in the corresponding ball receiving groove 121. A swirl groove 13 is provided on the inner wall in the radial direction of each ball receiving groove 121, and the swirl groove 13 can prevent grease from being thrown out of the ball receiving groove 121, thereby ensuring the lubrication effect on the ball and preventing the ball from being damaged when moving in the ball receiving groove 121.

[0036] According to some embodiments of the present invention, the gyration grooves 13 are configured in plurality and are arranged in sequence along the axial direction of the housing 12 .

[0037] In some specific embodiments, a plurality of swirl grooves 13 are provided on the inner wall of each ball 14 receiving groove 121, and the plurality of swirl grooves 13 are arranged at intervals along the extension direction of the ball 14 receiving groove 121. On the one hand, the grease is more evenly arranged on the inner wall of the accommodating cavity 120 during the operation of the vehicle, and the grease can fully lubricate the components in the inner ball cage 101. On the other hand, since there are multiple swirl grooves 13, the grease can more easily enter the swirl grooves 13 and flow into the bottom wall of the accommodating cavity 120 along with the swirl grooves 13, thereby reducing the loss of grease.

[0038] According to some embodiments of the present invention, the inner cage 101 further includes: a dust cover, which is disposed at the open end of the accommodating cavity 120 and is suitable for closing the accommodating cavity 120 .

[0039] In some specific embodiments, a dust cover is further provided on the inner ball cage 101. The dust cover is provided at the open mouth of the accommodating cavity 120 and can close the open mouth of the accommodating cavity 120. The dust cover can prevent dust and pollutants from entering the interior of the ball cage from the open mouth, which helps to keep the internal environment of the ball cage clean and prevent damage to the internal parts of the inner ball cage 101 due to the accumulation of dust and impurities. The dust cover can also prevent the grease in the inner ball cage 101 from flowing out. Grease is essential for the normal operation of the inner ball cage 101. It can reduce friction and extend the service life of the inner ball cage 101. The existence of the dust cover can effectively prevent the leakage of grease, further ensuring that the inner ball cage 101 operates in a well-lubricated state.

[0040] According to some embodiments of the present invention, the dust cover is configured as a rubber piece.

[0041] In some specific embodiments, the dust cover can be constructed as a rubber part, and the rubber material has good corrosion resistance and wear resistance, which means that the dust cover can effectively prevent dust, dirt and other debris from entering the inner ball cage 101 accommodating cavity 120 for a long time, keeping the interior of the accommodating cavity 120 in a clean environment, thereby avoiding foreign objects from damaging the components in the inner ball cage 101. Since the rubber material is relatively soft and has good elasticity, the rubber dust cover is more convenient to install and disassemble, and it also has a certain shock-absorbing effect, which can improve driving comfort to a certain extent.

[0042] According to some embodiments of the present invention, the inner cage 101 further includes: a sealing member, which is disposed between the dust cover and the housing 12 .

[0043] In some specific embodiments, a seal is further provided at the connection between the shell 12 and the dust cover. On the one hand, the seal can make the connection between the dust cover and the shell 12 tighter, ensuring that the dust cover will not be separated from the shell 12 during the movement of the drive shaft 100, thereby improving the stability and reliability of the connection between the dust cover and the shell 12. On the other hand, the seal can also close the gap at the connection between the dust cover and the shell 12, which can effectively prevent grease from flowing out of the gap, and can also prevent dust and foreign matter from entering the accommodating cavity 120 from the gap.

[0044] According to some embodiments of the present invention, a recessed portion 122 is provided on the outer circumferential surface of the housing 12 and is recessed radially inward. The recessed portion 122 extends axially from one end of the housing 12 to the other end.

[0045] In some specific embodiments, a plurality of recessed portions 122 are formed on the outer peripheral surface of the shell 12, which are radially recessed with respect to the accommodating cavity 120, and the recessed portions 122 extend axially from one end of the shell 12 to the other end, so that a plurality of ball receiving grooves 121 are formed in the accommodating cavity 120 and the balls have a certain space for movement. At the same time, the mass of the shell 12 can be reduced, and the manufacturing cost of the inner ball cage 101 can be reduced.

[0046] The drive shaft 100 according to the present invention is briefly described below.

[0047] According to the utility model, the drive shaft 100 is provided with the inner ball cage 101 described in any one of the above embodiments. Since the drive shaft 100 according to the utility model is provided with the inner ball cage 101 described in any one of the above embodiments, the reliability and stability of the drive shaft 100 during operation are higher, and the service life of the drive shaft 100 is longer.

[0048] The vehicle according to the present utility model is briefly described below.

[0049] The vehicle according to the present invention is provided with a drive shaft 100 as described in any one of the above embodiments. Since the vehicle according to the present invention is provided with a drive shaft 100 as described in any one of the above embodiments, the vehicle according to the present application has higher stability and higher safety during operation.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An inner ball cage (101) for a vehicle drive shaft, characterized in that: include: A shaft rod (11), one end of which is provided with a ball (14), and the other end of which is connected to a wheel; A shell (12) is arranged at one end of the shaft (11) and connected to the power output end of the vehicle. A receiving cavity (120) suitable for receiving the ball (14) is formed in the shell (12). A gyration groove (13) is formed on the inner wall of the gyration groove (13). The rotation direction of the gyration groove (13) is opposite to the rotation direction of the wheel.

2. The inner ball cage (101) for a vehicle drive shaft according to claim 1, characterized in that: The gyration groove (13) is arranged to be inclined in a direction extending in the circumferential direction and away from the bottom wall of the accommodation cavity (120).

3. The inner ball cage (101) for a vehicle drive shaft according to claim 2, characterized in that: A plurality of ball receiving grooves (121) are formed in the housing (12) and are arranged at intervals in the circumferential direction and extend in the axial direction. Each of the shaft rods (11) is provided with a ball (14) corresponding to the ball receiving groove (121) one by one. The inner wall of the ball receiving groove (121) in the radial direction is provided with the gyration groove (13).

4. The inner ball cage (101) for a vehicle drive shaft according to claim 2, characterized in that: The gyration grooves (13) are constructed in plurality and are arranged in sequence along the axial direction of the housing (12).

5. The inner ball cage (101) for a vehicle drive shaft according to claim 1, characterized in that: Also includes: A dust cover is arranged at the open end of the accommodating cavity (120) and is suitable for closing the accommodating cavity (120).

6. The inner ball cage (101) for a vehicle drive shaft according to claim 5, characterized in that: The dust cover is configured as a rubber piece.

7. The inner ball cage (101) for a vehicle drive shaft according to claim 5, characterized in that: Also includes: A sealing member is arranged between the dust cover and the shell (12).

8. The inner ball cage for a vehicle drive shaft according to claim 1, characterized in that: The outer peripheral surface of the shell (12) is provided with a recessed portion (122) recessed radially inwards, and the recessed portion (122) extends axially from one end of the shell (12) to the other end.

9. A drive shaft, characterized in that: The invention comprises the inner cage (101) as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the drive shaft as claimed in claim 9.

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