Impact-resistant fatigue-resistant constant velocity universal joint driving shaft assembly

Abstract

The utility model discloses an impact-resistant fatigue-resistant constant velocity universal joint driving shaft assembly. The problems that a support of an existing constant velocity universal joint assembly is insufficient in abrasion resistance, and failures such as bolt loosening are prone to occurring are mainly solved. The mounting structure is characterized by further comprising a support (4), the support is used for mounting the half shaft, a mounting hole (41) is formed in the support, a steel wire thread insert (42) is arranged in the mounting hole, and a fastener penetrates through the steel wire thread insert for mounting. According to the shock-resistant and fatigue-resistant constant velocity universal joint driving shaft assembly, the steel wire thread insert is connected with the bolt in a fastened mode, the connecting condition is improved, the bearing capacity and the fatigue resistance of threaded connection are improved, shock resistance and fatigue resistance of a driving shaft are effectively improved, and the comfort of a vehicle is improved. Besides, after the constant velocity universal joint driving shaft assembly is loaded, if the whole vehicle is rectified or the product is overhauled, the internal thread cannot be damaged even if the bolt is repeatedly screwed in and out, so that the overall quality of the constant velocity universal joint driving shaft assembly and the maneuverability of convenient repair are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, concretely relates to impact resistance fatigue constant velocity universal joint drive shaft assembly. BACKGROUND

[0002] The constant velocity universal joint drive shaft assembly of the automobile is an important part of the automobile, and the constant velocity universal joint drive shaft assembly of the automobile comprises a universal joint connected with the power output end of the transmission case at one end and a universal joint connected with the power input part of the automobile wheel at the other end. In order to meet a series of requirements such as the rigidity difference, spatial layout and lightweight design of the equal-angle and left-right drive shaft assembly, the right constant velocity drive shaft assembly is generally designed to have an aluminum support structure, and the support is generally designed to have a common threaded hole structure. The support threaded hole and the motor flange hole are connected by bolts to fix the support on the motor shell. However, due to the low hardness of the aluminum support material, the wear resistance, impact resistance and durability of the internal thread cannot be guaranteed, and the wear of the thread will reduce the fastening of the thread, resulting in loose connection, especially when applied to some new energy vehicles with large torque, the accelerated wear of the thread will cause the bolt connection to be loose and other failure phenomena. Therefore, when the vehicle is running, the drive shaft may produce abnormal noise due to the loosening of the support, which affects the NVH performance of the vehicle. SUMMARY

[0003] In order to overcome the shortcomings of the background art, the utility model provides an impact resistance fatigue constant velocity universal joint drive shaft assembly, which mainly solves the problem of insufficient wear resistance of the support of the current constant velocity universal joint assembly and easy bolt loosening failure.

[0004] The technical scheme of the utility model is,

[0005] The impact resistance fatigue constant velocity universal joint drive shaft assembly comprises an intermediate shaft, a first universal joint connected with one end of the intermediate shaft, and a second universal joint connected with the other end of the intermediate shaft. The first universal joint comprises a shell, and the shell is provided with a half shaft for connecting with a differential. The assembly further comprises a support for mounting the half shaft, and the support is provided with a mounting hole. A steel wire sleeve is arranged in the mounting hole, and the steel wire sleeve is used for fastening.

[0006] The steel wire sleeve is made of 304# steel.

[0007] The support is axially provided with a through groove, and the through groove is provided with a bearing for mounting the half shaft.

[0008] The assembly further comprises a retainer ring sleeved on the axial outer wall of the half shaft, and the retainer ring is provided on the front and back sides of the bearing in the axial direction.

[0009] The support is made of aluminum.

[0010] A dust cover is further included, one end of the dust cover is connected with the intermediate shaft, and one end of the dust cover is connected with the shell.

[0011] The support is internally provided with a first stop ring, and the half shaft is externally provided with a second stop ring, and the first stop ring and the second stop ring are correspondingly arranged on the front and back sides of the bearing in the axial direction.

[0012] The second stop ring is in contact with an end face of the retainer facing the bearing.

[0013] The retainer is made of DC04.

[0014] The utility model discloses a driving shaft assembly of impact resistance and fatigue resistance constant velocity universal joint, through steel wire screw and bolt fastening connection, improves the connection condition, increases the bearing capacity and fatigue resistance of threaded connection, effectively improves the impact resistance and fatigue resistance of driving shaft, improves the comfort of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a sectional view schematic diagram of the first embodiment of the utility model.

[0016] Figure 2 It is a local sectional view schematic diagram of the first embodiment of the utility model.

[0017] Figure 3 It is Figure 1 It is an enlarged schematic diagram of the A place in the middle. DETAILED DESCRIPTION

[0018] The utility model discloses further illustrate below combining with the drawing, the anti-impact fatigue constant velocity joint drive shaft assembly, including intermediate shaft 1, one end of intermediate shaft is connected with first universal joint 2, and the other end is connected with second universal joint 3, first universal joint includes casing 21, be equipped with for with differential connection axle half 22, still including support 4, the support is used for axle half installation, the support is equipped with mounting hole 41, be equipped with steel wire screw sleeve 42 in mounting hole, the steel wire screw sleeve is used for fastener to pass through installation in. Steel wire screw sleeve is a new type of internal thread fastener, is suitable for threaded connection, is screwed into and is fastened in the threaded hole of one of the connected parts, forms standard internal thread, bolt (or screw) is screwed into, and steel wire screw sleeve is fastened with bolt, improves the connection condition, increases the bearing capacity and the fatigue strength of threaded connection, effectively improves the anti-impact and fatigue of drive shaft, improves the comfort of vehicle. In addition, after the product is installed, if the whole vehicle is rectified or the product is overhauled, even if repeatedly screwing in and screwing out bolt, the internal thread will not be damaged, improve the overall quality of constant velocity joint drive shaft assembly and the mobility of easy repair.

[0019] In the embodiment, the steel wire screw sleeve is made of 304# steel, as shown in the figure. The service life is long.

[0020] In the embodiment, the support is axially provided with a through groove 43, and the through groove is provided with a bearing 431 for mounting the axle half, as shown in the figure. The friction is reduced, and the service life is increased.

[0021] In the embodiment, the support is axially provided with a through groove 43, and the through groove is provided with a bearing 431 for mounting the axle half, as shown in the figure. The friction is reduced, and the service life is increased.

[0022] In the embodiment, the support is made of aluminum, as shown in the figure.

[0023] In the embodiment, the support is axially provided with a through groove 43, and the through groove is provided with a bearing 431 for mounting the axle half, as shown in the figure. The friction is reduced, and the service life is increased.

[0024] In the embodiment, the support is axially provided with a through groove 43, and the through groove is provided with a bearing 431 for mounting the axle half, as shown in the figure. The friction is reduced, and the service life is increased.

[0025] In the embodiment, the second retainer contacts the end face of the bearing in the direction of the retainer, as shown in the figure. At the same time, the second retainer also plays a role in positioning the retainer.

[0026] In the embodiment, the retainer is made of DC04, as shown in the figure. DC04 has good machining performance and corrosion resistance.

[0027] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0028] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model. The embodiments should not be regarded as limiting the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. An impact-resistant fatigue-resistant constant velocity joint drive shaft assembly, comprising a middle shaft (1), one end of the middle shaft is connected with a first universal joint (2), the other end of the middle shaft is connected with a second universal joint (3), the first universal joint comprises a shell (21), and a half shaft (22) for being connected with a differential is arranged on the shell, characterized in that: Also include Support (4) for the half shaft installation, the support is provided with mounting hole (41), the mounting hole is provided with steel wire nipple (42), the steel wire nipple is used for fastener to pass through installation.

2. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 1, wherein: The steel wire nipple is made of 304# steel.

3. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 2, wherein: The support is provided with through groove (43) axially, the through groove is provided with bearing (431) for half shaft installation.

4. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 3, wherein: Also include the retainer (23) set on the half shaft axial outer wall, the retainer is correspondingly provided with front and back two sides on the bearing axial.

5. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 4, wherein: The support is made of aluminum.

6. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 5, wherein: Also include dust cover (6), one end of the dust cover is connected with the intermediate shaft, one end of the dust cover is connected with the shell.

7. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 6, wherein: The support is provided with first stop ring (71) inside, the half shaft is provided with second stop ring (72) circumferentially, the first stop ring and the second stop ring are correspondingly provided with front and back two sides on the bearing axial.

8. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 7, wherein: The second stop ring is in contact with the end face of the retainer towards the bearing.

9. The impact fatigue resistant constant velocity joint drive shaft assembly of claim 8, wherein: The retainer is made of DC04.

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