Automobile driving shaft ball cage assembly, driving shaft assembly with same and automobile

Abstract

The utility model discloses a ball cage assembly of an automobile driving shaft. Comprising a first transmission shaft in transmission connection with a gearbox of an automobile, a second transmission shaft in transmission connection with the first transmission shaft and used for driving wheels of the automobile, and a bearing assembly arranged on the first transmission shaft, fixedly connected with a driving shaft support of the automobile and used for supporting the first transmission shaft. The bearing assembly comprises a bearing seat used for being fixedly connected with the driving shaft support, the first transmission shaft comprises a ball cage shell in transmission connection with the second transmission shaft, and the ball cage shell is provided with a matching part embedded in the bearing seat and used for forming a protection structure with the bearing seat. The utility model further discloses a driving shaft assembly with the automobile driving shaft ball cage assembly and an automobile.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile manufacturing, in particular to an automobile drive shaft ball cage component and a drive shaft assembly and an automobile having the automobile drive shaft ball cage component. Background Art

[0002] A drive shaft ball cage assembly is usually arranged between the gearbox and the wheels of the automobile so as to smoothly and reliably transmit the driving power or torque from the gearbox to the wheels. In the prior art, in order to prevent the drive shaft ball cage assembly from being rubbed or contaminated by foreign objects in the external environment, protective structures such as chassis armor and dust covers are usually installed, but this not only increases the manufacturing cost of the automobile, but also is not conducive to the lightweighting of the entire vehicle. Therefore, those skilled in the art are committed to developing an automobile drive shaft ball cage assembly that not only meets the dustproof requirements, but also reduces the manufacturing cost, which is conducive to the realization of lightweighting of the entire vehicle. Utility Model Content

[0003] One object of the utility model is to provide a vehicle drive shaft ball cage assembly, which can overcome the shortcomings of the prior art such as high manufacturing cost and lack of lightweight. Another object of the utility model is to provide a drive shaft assembly and a vehicle having the vehicle drive shaft ball cage assembly.

[0004] In order to achieve the above technical objectives, the first aspect of the utility model provides a vehicle drive shaft ball cage assembly, including a first transmission shaft for transmission connection with a vehicle gearbox, a second transmission shaft for driving the wheels of the vehicle and being transmission connected to the first transmission shaft, and a bearing assembly for supporting the first transmission shaft, which is mounted on the first transmission shaft and fixedly connected to a drive shaft bracket of the vehicle, wherein the bearing assembly includes a bearing seat for being fixedly connected to the drive shaft bracket, the first transmission shaft includes a ball cage shell for transmission connection with the second transmission shaft, and the ball cage shell has a mating portion embedded in the bearing seat for forming a protective structure with the bearing seat.

[0005] Preferably, it also includes a universal joint transmission-connected between the ball cage housing and the second transmission shaft.

[0006] Preferably, the universal joint comprises a tripod mounted on the second transmission shaft, an outer ring rotatably connected to the tripod and abutting against the ball cage housing, and a roller mounted between the tripod and the outer ring.

[0007] Preferably, the inner wall of the ball cage shell is provided with a slide groove extending in a direction parallel to the length direction of the ball cage shell.

[0008] Preferably, the invention comprises a protective sleeve installed between the ball cage shell and the second transmission shaft, wherein the protective sleeve is in a pleated shape.

[0009] Preferably, it also includes a flexible connecting piece installed between the ball cage shell and the protective sleeve.

[0010] Preferably, it also includes a fastener installed on the protective cover.

[0011] Preferably, the matching portion is flange-shaped and extends in a direction parallel to the length direction of the cage shell.

[0012] The second aspect of the utility model provides a drive shaft assembly, including a car gearbox, a wheel and a car drive shaft ball cage assembly as described in the above technical solution, one end of the first transmission shaft of the car drive shaft ball cage assembly is transmission connected to the gearbox, and the other end is transmission connected to the wheel through the second transmission shaft.

[0013] The third aspect of the utility model provides an automobile, comprising a driving mechanism of the automobile and a drive shaft assembly as described in the above technical solution. When the driving mechanism drives the gearbox of the drive shaft assembly, the gearbox transmits the driving power to the wheels through the automobile drive shaft ball cage assembly.

[0014] By adopting the above technical solution, the utility model has the following beneficial effects:

[0015] The utility model discloses a vehicle drive shaft ball cage assembly, comprising a first transmission shaft for transmission connection with a gearbox of a vehicle, a second transmission shaft for driving a wheel of a vehicle and being transmission connected with the first transmission shaft, and a bearing assembly for supporting the first transmission shaft and being mounted on the first transmission shaft and fixedly connected with a drive shaft bracket of the vehicle, wherein the bearing assembly comprises a bearing seat for being fixedly connected with the drive shaft bracket, the first transmission shaft comprises a ball cage shell for transmission connection with the second transmission shaft, and the ball cage shell has a matching portion embedded in the bearing seat for forming a protective structure with the bearing seat. Compared with the existing drive shaft ball cage assembly, the utility model not only has stable and reliable transmission, but also reduces the number of sealing covers used, reduces the manufacturing cost of the vehicle, and is beneficial to the realization of lightweight of the whole vehicle, because the ball cage shell of the first transmission shaft is formed with a matching portion for abutting against the bearing seat for protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the assembly structure of a vehicle drive shaft ball cage assembly provided in an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The schematic diagram of the exploded structure of the vehicle drive shaft ball cage assembly in the first perspective is shown;

[0019] Figure 3 for Figure 1 The exploded structural diagram of the vehicle drive shaft ball cage assembly shown in the second viewing angle;

[0020] Figure 4 for Figure 1 The schematic diagram of the cross-sectional structure of the vehicle drive shaft ball cage assembly in the AA direction is shown;

[0021] Figure 5 for Figure 4 The enlarged structural view of the automobile drive shaft ball cage assembly at B is shown.

[0022] Description of reference numerals:

[0023] 1. First transmission shaft; 2. Second transmission shaft; 3. Bearing assembly; 4. Universal joint; 5. Protective cover; 6. Connector; 7. Fastener;

[0024] 11. Transmission shaft body; 12. Ball cage housing;

[0025] 121. mating portion; 122. slide groove; 123. weight reduction groove;

[0026] 31. Bearing; 32. Bearing seat;

[0027] 41. Three-pin joint; 42. Outer ring; 43. Roller. DETAILED DESCRIPTION

[0028] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0031] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0032] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0033] See also Figure 1 As shown, the embodiment of the first aspect of the utility model provides a vehicle drive shaft ball cage assembly, which is used for transmitting the driving power or torque provided by the engine or motor of the vehicle to the wheels after passing through the gearbox. The vehicle drive shaft ball cage assembly includes a first transmission shaft 1 for transmission connection with the gearbox of the vehicle, a second transmission shaft 2 for driving the wheels of the vehicle and transmission connection with the first transmission shaft 1, and a bearing assembly 3 for supporting the first transmission shaft 1, which is installed on the first transmission shaft 1 and fixedly connected to the drive shaft bracket of the vehicle, and the bearing assembly 3 includes a bearing seat 32 for fixed connection with the drive shaft bracket, and the first transmission shaft 1 includes a ball cage shell 12 for transmission connection with the second transmission shaft 2. It should be noted that the drive shaft bracket mentioned here can refer to the engine bracket, the drive shaft connection bracket or a part thereof, so as to ensure that the bearing seat 32 is firmly connected to the vehicle body, thereby providing support for the first transmission shaft 1.

[0034] In the present embodiment, the first transmission shaft 1 comprises a transmission shaft body 11 and a ball cage shell 12 integrally formed with the transmission shaft body 11, wherein the transmission shaft body 11 is in the shape of a straight rod, one end of which is transmission-connected to the power output end of the gearbox, and the other end of which is fixedly connected to the ball cage shell 12; the ball cage shell 12 is in the shape of a cylinder, and a receiving groove (not marked in the figure) is provided in the middle portion along a direction parallel to its length direction, so as to be transmission-connected to the second transmission shaft 2. It should be noted that in order to prevent the bearing assembly 3 in the drive shaft ball cage assembly from being rubbed or contaminated by foreign objects in the external environment during use of the vehicle, such as dust, mud, etc., in the present embodiment, the ball cage shell 12 has a mating portion 121 embedded in the bearing seat 32 for forming a protective structure with the bearing seat 32, please refer to Figure 2 , Figure 4 and Figure 5 As shown, the matching portion 121 is disposed on one end of the cage housing 12 close to the gearbox, is flange-shaped, and extends in a direction parallel to the length direction of the cage housing 12 .

[0035] See also Figure 2 , Figure 3 As shown, the bearing assembly 3 includes a bearing seat 32 and a bearing 31 pressed into the bearing seat 32. When the first transmission shaft 1 is assembled with the bearing assembly 3, the bearing 31 and the bearing seat 32 of the bearing assembly 3 are both mounted on the outer surface of the transmission shaft body 11 of the first transmission shaft 1, and the mating portion 121 of the ball cage housing 12 is against the inner wall of the bearing seat 32. Since the mating portion 121 and the inner wall of the bearing seat 32 form a protective structure, it is beneficial to prevent foreign objects such as dust and mud from invading the bearing 31, causing friction and pollution, thereby increasing the service life of the bearing 31. Compared with the technical solution of using an additional sealing cover for dust prevention in the prior art, the embodiment provided by the utility model reduces the number of sealing covers used, which is beneficial to reducing manufacturing costs.

[0036] Furthermore, in order to prevent the matching portion 121 of the cage housing 12 from interfering with the inner wall of the bearing seat 32 in motion, preferably, the matching portion 121 and the bearing seat 32 are clearance-fitted.

[0037] In this embodiment, in order to ensure that the power transmission between the first transmission shaft 1 and the second transmission shaft 2 is smooth and reliable, the drive shaft ball cage assembly also includes a universal joint 4 that is transmission-connected between the ball cage housing 12 and the second transmission shaft 2. Figure 2 , Figure 3 As shown, the universal joint 4 disclosed in this embodiment is a tripod type universal joint, which includes a tripod 41 mounted on the second transmission shaft 2, an outer ring 42 rotatably connected to the tripod 41 and abutting against the cage housing 12, and a roller 43 installed between the tripod 41 and the outer ring 42.

[0038] Furthermore, in order to meet the steering requirements of the vehicle and compensate for the suspension displacement generated during the driving process of the vehicle, in this embodiment, the inner wall of the ball cage shell 12 is provided with a slide groove 122 extending in a direction parallel to the length direction of the ball cage shell 12, which is used to abut against the outer ring 42 of the universal joint 4. In this way, when the car turns, the outer ring 42 of the universal joint 4 slides in and out of the slide groove 122 in the ball cage shell 12, which is beneficial to realize the telescopic function of the drive shaft ball cage assembly. The inside and outside mentioned here can refer to the width direction of the car body. In some embodiments, the number of the slide grooves 122 can be multiple. In this embodiment, the number of the slide grooves 122 is equal to the number of the outer rings 42, both of which are three.

[0039] Furthermore, in order to reduce weight and manufacturing cost, in this embodiment, the outer surface of the cage shell 12 is provided with a weight-reducing groove 123 extending in a direction parallel to the length direction of the cage shell 12, see Figure 3 As shown, the weight-reducing groove 123 is arc-shaped. In some embodiments, the number of the weight-reducing grooves 123 can be multiple. In this embodiment, the number of the weight-reducing grooves 123 is three.

[0040] In this embodiment, in order to prevent the connection portion between the second transmission shaft 2 and the cage housing 12 from being worn during the driving of the vehicle, the drive shaft cage assembly further includes a protective sleeve 5 sleeved between the cage housing 12 and the second transmission shaft 2, see Figure 1 , Figure 2 Further, in order to protect the second transmission shaft 2, the protective sleeve 5 is multi-layered and folded along its axial direction. Specifically, each layer of the folded structure can be a circular flange along the circumference of the protective sleeve 5, so as to buffer the axial impact load suddenly received by the second transmission shaft 2.

[0041] Furthermore, in order to ensure a tight connection between the protective sleeve 5 and the ball cage shell 12 and the second transmission shaft 2, in this embodiment, the drive shaft ball cage assembly also includes a flexible connecting member 6 clamped between the ball cage shell 12 and the protective sleeve 5. The connecting member 6 is annular, and the inner surface is adapted to the outer surface of the ball cage shell 12, and the outer peripheral surface is circular, which is beneficial to the installation of the protective sleeve 5.

[0042] Furthermore, in this embodiment, the drive shaft cage assembly further comprises a fastener 7 mounted on the end of the protective sleeve 5, and the fastener 7 is annular, which is beneficial to ensure reliable connection of the protective sleeve 5. Preferably, the fastener 7 can be a clamp.

[0043] The embodiment of the second aspect of the utility model provides a drive shaft assembly, including a gearbox, a wheel and a vehicle drive shaft ball cage assembly as described in the above embodiment, wherein one end of the first transmission shaft 1 of the vehicle drive shaft ball cage assembly is connected to the gearbox, and the other end is connected to the wheel through the second transmission shaft 2, so that the drive shaft assembly has the characteristics of long service life and low manufacturing cost. It should be noted that the vehicle drive shaft ball cage assembly mentioned here can serve as an inner ball cage of the vehicle drive shaft. In some embodiments, in order to ensure that the transmission distance is far and meets the expected design requirements, the drive shaft assembly can also include an outer ball cage of the vehicle drive shaft arranged between the second transmission shaft 2 and the wheel, and the outer ball cage of the vehicle drive shaft is connected to the vehicle drive shaft ball cage assembly to form a multi-stage transmission structure. Specifically, the outer ball cage of the vehicle drive shaft can refer to a ball cage universal joint composed of an outer star wheel, an inner star wheel, a retaining frame and a steel ball, which is directly connected to the wheel hub, so that it can efficiently and stably transmit torque to the wheel hub at an angular velocity at a continuously changing swing angle and drive the wheel to rotate.

[0044] An embodiment of the third aspect of the utility model provides an automobile, including a driving mechanism of the automobile and a drive shaft assembly as described in the above embodiment. When the driving mechanism drives the gearbox of the drive shaft assembly, the gearbox transmits the driving power to the wheels through the automobile drive shaft ball cage assembly, so that the above automobile has the characteristics of smooth and reliable power transmission.

[0045] Compared with the prior art, the utility model has the following beneficial effects:

[0046] The utility model discloses a vehicle drive shaft ball cage assembly, comprising a first transmission shaft 1 for transmission connection with a gearbox of a vehicle, a second transmission shaft 2 for driving a wheel of a vehicle and transmission connection with the first transmission shaft 1, and a bearing assembly 3 for supporting the first transmission shaft 1 and fixedly connected with a drive shaft bracket of the vehicle, wherein the bearing assembly 3 comprises a bearing seat 32 for fixedly connected with the drive shaft bracket, the first transmission shaft 1 comprises a ball cage shell 12 for transmission connection with the second transmission shaft 2, and the ball cage shell 12 comprises a matching portion 121 embedded in the bearing seat 32 for forming a protective structure with the bearing seat 32. Compared with the existing drive shaft ball cage assembly, the utility model not only has stable and reliable transmission, but also reduces the number of sealing covers used, reduces the manufacturing cost of the vehicle, and is beneficial to the realization of lightweight of the whole vehicle because the ball cage shell 12 of the first transmission shaft 1 is formed with a matching portion 121 abutting against the bearing seat 32 for protection.

[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A vehicle drive shaft ball cage assembly, characterized in that: The invention comprises a first transmission shaft (1) for transmission connection with a gearbox of an automobile, a second transmission shaft (2) for transmission connection with the first transmission shaft (1) and for driving the wheels of the automobile, and a bearing assembly (3) mounted on the first transmission shaft (1) and fixedly connected to a drive shaft bracket of the automobile for supporting the first transmission shaft (1), the bearing assembly (3) comprising a bearing seat (32) for fixedly connected to the drive shaft bracket, the first transmission shaft (1) comprising a ball cage shell (12) for transmission connection with the second transmission shaft (2), the ball cage shell (12) having a matching portion (121) embedded in the bearing seat (32) for forming a protective structure with the bearing seat (32).

2. The automotive drive shaft ball cage assembly according to claim 1, characterized in that: It also includes a universal joint (4) which is transmission-connected between the ball cage housing (12) and the second transmission shaft (2).

3. The automotive drive shaft ball cage assembly according to claim 2, characterized in that: The universal joint (4) comprises a tripod (41) mounted on the second transmission shaft (2), an outer ring (42) rotatably connected to the tripod (41) and abutting against the cage housing (12), and a roller (43) mounted between the tripod (41) and the outer ring (42).

4. The automotive drive shaft ball cage assembly according to claim 3, characterized in that: The inner wall of the ball cage shell (12) is provided with a slide groove (122) extending in a direction parallel to the length direction of the ball cage shell (12).

5. The automotive drive shaft ball cage assembly according to claim 1, characterized in that: It comprises a protective sleeve (5) installed between the ball cage shell (12) and the second transmission shaft (2), and the protective sleeve (5) is in a folded shape.

6. The automotive drive shaft ball cage assembly according to claim 5, characterized in that: It also includes a flexible connecting piece (6) installed between the cage shell (12) and the protective sleeve (5).

7. The automotive drive shaft ball cage assembly according to claim 6, characterized in that: It also includes a fastener (7) mounted on the protective cover (5).

8. The automotive drive shaft ball cage assembly according to claim 1, characterized in that: The matching portion (121) is flange-shaped and extends in a direction parallel to the length direction of the cage shell (12).

9. A drive shaft assembly, characterized in that: The invention comprises a gearbox of an automobile, a wheel and a vehicle drive shaft ball cage assembly as claimed in any one of claims 1 to 8, wherein one end of a first transmission shaft (1) of the vehicle drive shaft ball cage assembly is transmission-connected to the gearbox, and the other end is transmission-connected to the wheel via the second transmission shaft (2).

10. An automobile, characterized in that: It comprises a driving mechanism of an automobile and a drive shaft assembly as claimed in claim 9. When the driving mechanism drives the gearbox of the drive shaft assembly, the gearbox transmits the driving power to the wheels through the automobile drive shaft ball cage assembly.

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