A new energy leisure vehicle rear axle assembly

Abstract

The present invention discloses a rear axle assembly for a new energy leisure vehicle, comprising a differential case, a rear axle, a motor and a brake pot; the rear axle is composed of two bridge tubes with the same structure, wherein a half-shaft is connected to the inside of the bridge tube via a bearing, one end of the bridge tube is connected to the power output end of the differential case via a flange, and the other end is installed with a brake pot, one end of the half-shaft is connected to the differential pack in the differential case, and the other end is key-connected to the brake pot, and the end of the half-shaft is threadedly connected to a slotted nut through the brake pot; the power input end of the differential case is connected to the motor. The present invention can reasonably solve the problem of excessive size and weight of the rear axle assembly of small vehicles such as new energy leisure vehicles by setting a weight unloading groove and annular columns, thereby reducing resource waste, reducing the burden on the motor, and reducing the cost of raw materials. At the same time, the rear axle assembly is easy to install, has high strength, and is not easy to damage.

Description

Technical Field

[0001] The present invention relates to a power transmission system for a new energy vehicle, and specifically discloses a rear axle assembly for a new energy leisure vehicle. Background Art

[0002] With the increasing depletion of oil resources and the increasing severity of air pollution, new energy vehicles have become a hot development trend. At the same time, new energy vehicles are also moving towards greater convenience and comfort. At present, the size and weight of new energy rear axle assemblies are too large, which not only causes waste of resources but also puts a heavy burden on the motor. Summary of the Invention

[0003] In order to meet the requirements of new energy vehicles, especially new energy leisure vehicles, which are lightweight, a new energy leisure vehicle rear axle assembly with a reasonable structure, high space utilization, easy installation and maintenance, and high resource utilization is provided.

[0004] The technical solution adopted by the present invention is: a rear axle assembly of a new energy leisure vehicle, including a differential case, a rear axle, a motor and a brake pot; the rear axle is composed of two bridge tubes with the same structure, and a half-shaft is connected to the bridge tube through a bearing. One end of the bridge tube is connected to the power output end of the differential case through a flange, and the other end is equipped with a brake pot. One end of the half-shaft is connected to the differential pack in the differential case, and the other end is key-connected to the brake pot, and the end of the half-shaft is threaded through the brake pot and connected to a slotted nut; the power input end of the differential case is connected to the motor.

[0005] The differential case is formed by buckling two half shells, and bolt holes are set around the two half shells and fixed by bolt connection; the differential case is provided with an input hole and an output hole for installing the power input shaft and the power output shaft, and the input hole and the output hole are respectively provided with a motor connection flange and a rear axle connection flange; the rear axle connection flange includes four rear axle connection bolt holes circumferentially evenly distributed around the output hole, and an annular column arranged on the outer edge of the output hole, and a reinforcing rib is set between the inner and outer rings of the annular column. The rear axle connection bolt holes divide the annular column into four arc-shaped unloading grooves of equal size, and reinforcing ribs are connected between the rear axle connection bolt holes and the annular column; the outside of the annular column is symmetrically connected with a triangular fixed support, which is connected between the annular column and the half shells.

[0006] The connecting motor flange includes three connecting motor bolt holes located on the edge of the half shell, one of which is located on the central axis of the half shell and forms an equilateral triangle positional relationship with the other two connecting motor bolt holes around the input hole.

[0007] The motor is provided with a center connecting plate, the center of which is provided with a motor output shaft hole, and the outside of the motor output shaft hole is provided with a differential case connecting flange symmetrical to the motor connecting flange of the differential case, the differential case connecting flange includes a flange plate and a connecting differential case bolt hole, three connecting differential case bolt holes are provided, forming an equilateral triangle position relationship, and a weight unloading groove is provided on the flange plate; the connecting motor flange and the differential case connecting flange are connected by bolts; six bolt holes are evenly distributed circumferentially on the outer edge of the center connecting plate for connecting to the main housing of the motor.

[0008] The two half shells of the differential case are connected through the surrounding bolt holes and bolts; the differential case connecting rear axle flange and the rear axle flange are connected by bolts; the differential case connecting motor flange and the differential case connecting flange of the motor are connected by bolts, and then the half shaft is connected to the brake pot to complete the assembly of the rear axle assembly.

[0009] The arc-shaped unloading groove is further divided into at least two sections by reinforcing ribs.

[0010] A reinforcement panel protruding from the surface of the half shell is provided in the area between the three bolt holes for connecting the motor, and a weight unloading groove is provided on the reinforcement panel

[0011] The bearing is connected to the half shaft through a retaining spring.

[0012] The edge of the differential case is located on both sides of the flange connecting the rear axle, and two process pressure points are symmetrically provided.

[0013] Beneficial effects of the present invention:

[0014] The present invention, through the provision of a weight-relief trough and annular columns, can reasonably solve the problem of excessive weight of the rear axle assembly of small vehicles such as new energy leisure vehicles, thereby reducing resource waste, reducing the burden on the motor, and reducing raw material costs. At the same time, the rear axle assembly is easy to install, has high strength, and is not easy to damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the rear axle assembly of a new energy leisure vehicle.

[0016] Figure 2 This is a schematic diagram of the structure of one of the half shells of the differential case.

[0017] Figure 3 This is a structural diagram of the other half shell of the differential case.

[0018] Figure 4 This is a schematic diagram of the motor centerboard structure. DETAILED DESCRIPTION

[0019] like Figure 1As shown, a rear axle assembly of a new energy leisure vehicle includes a differential case 1, a rear axle 2, a motor 3 and a brake pot 4; the rear axle 2 is composed of two bridge tubes 2-1 with the same structure, and a half shaft 2-2 is connected to the bridge tube 2-1 through a bearing 5. One end of the bridge tube 2-1 is connected to the power output end of the differential case 1 through a flange 2-3, and the other end is equipped with a brake pot 4. One end of the half shaft 2-2 is connected to the differential pack in the differential case 1, and the other end is key-connected to the brake pot 4, and the end of the half shaft 2-2 passes through the brake pot 4 and is threadedly connected to a slotted nut 6; the power input end of the differential case 1 is connected to the motor 3.

[0020] like Figure 2 and 3 As shown, the differential case 1 is formed by buckling two half-shells 1-1 and 1-2. Bolt holes are set around the two half-shells 1-1 and 1-2 and fixed by bolts. The differential case 1 is provided with an input hole 1-3 and an output hole 1-4 for installing the power input shaft and the power output shaft. The input hole 1-3 and the output hole 1-4 are respectively provided with a motor connection flange 1-5 and a rear axle connection flange 1-6; wherein the rear axle connection flange 1-6 includes four rear axle connection bolt holes 1-61 uniformly distributed around the output hole in the circumference, and a rear axle connection bolt hole 1-61 provided at the output hole. An annular column 1-62 is provided on the outer edge of 1-4, and a reinforcing rib 1-63 is provided between the inner ring and the outer ring of the annular column 1-62. The rear axle bolt hole 1-61 is connected to separate the annular column 1-62 into four arc-shaped unloading grooves 1-64 of equal size, and the reinforcing rib 1-63 is connected between the rear axle bolt hole 1-61 and the annular column 1-62. A triangular fixed support 1-65 is symmetrically connected to the outside of the annular column 1-62, and the fixed support 1-65 is connected between the annular column 1-62 and the half shells 1-1 and 1-2.

[0021] The connecting motor flange 1-5 includes three connecting motor bolt holes 1-66 located on the edge of the half shell, one of the connecting motor bolt holes 1-66 is located on the central axis of the half shell, and forms an equilateral triangle positional relationship with the other two connecting motor bolt holes 1-66 around the input hole. A reinforcing panel protruding from the surface of the half shell is provided in the area between the three connecting motor bolt holes 1-66, and a weight unloading groove 1-67 is provided on the reinforcing panel.

[0022] like Figure 4As shown, the motor 3 is provided with a center connecting plate 3-1, the center of the center connecting plate 3-1 is provided with a motor output shaft hole 3-3, the outside of the motor output shaft hole 3-3 is provided with a differential case connecting flange 3-2 which is symmetrical with the connecting motor flange 1-5 of the differential case 1, the differential case connecting flange 3-2 includes a flange plate 3-21 and a connecting differential case bolt hole 3-22, three connecting differential case bolt holes 3-22 are provided to form an equilateral triangle position relationship, and a weight unloading groove 3-23 is provided on the flange plate 3-21; the connecting motor flange 1-5 is connected to the differential case connecting flange 3-2 by bolts; six bolt holes are evenly distributed circumferentially on the outer edge of the center connecting plate 3-1 for connecting to the main housing of the motor 3.

[0023] like Figure 1 and 2 As shown in Figures 1 and 3, the two half shells 1-1 and 1-2 of the differential case 1 are connected by the surrounding bolt holes and bolts; the differential case 1 is connected to the rear axle flange 1-6 and the rear axle flange 2-3 by bolts; the differential case 1 is connected to the motor flange 1-5 and the differential case connection flange 3-2 of the motor 3 by bolts, and then the half shaft 2-2 is connected to the brake pot 4 to realize the assembly of the rear axle assembly.

[0024] like Figure 1 As shown, the arc-shaped unloading groove 1-64 is further divided into at least two sections by reinforcing ribs.

[0025] The bearing 5 is connected to the half shaft 2 - 2 via a retaining spring 7 .

[0026] The edge of the differential case 1 is located on both sides of the rear axle flange 1-6, and two process pressure points 1-7 are symmetrically provided.

[0027] The width of the paper pad plane of the differential case 1 is no more than 1 cm.

[0028] In the present invention, the plane area of the paper pad is reduced; the reinforcing ribs are relatively reduced, the wall thickness of the half shell is reduced, and the diameter of the half shaft blank is reduced; the sizes of the tapered holes of the bearing 5, the retaining ring 7, the slotted nut 6, and the brake pot 4 are all reduced.

Claims

1. A new energy leisure vehicle rear axle assembly, characterized in that: Including differential case, rear axle, motor and brake pan; The rear axle is composed of two bridge tubes with the same structure. A half shaft is connected to the bridge tube through a bearing. One end of the bridge tube is connected to the power output end of the differential case through a flange, and the other end is installed with a brake pot. One end of the half shaft is connected to the differential pack in the differential case, and the other end is connected to the brake pot key. The end of the half shaft passes through the brake pot and is threaded with a slotted nut; the power input end of the differential case is connected to the motor; The differential case is formed by buckling two half shells, and bolt holes are arranged around the two half shells and fixed by bolts; the differential case is provided with an input hole and an output hole for installing the power input shaft and the power output shaft, and the input hole and the output hole are respectively provided with a motor connection flange and a rear axle connection flange; The rear axle flange includes four rear axle bolt holes circumferentially distributed around the output hole, and an annular column disposed on the outer edge of the output hole. A reinforcing rib is disposed between the inner and outer rings of the annular column. The rear axle bolt holes divide the annular column into four equally sized arc-shaped unloading grooves, and a reinforcing rib is connected between the rear axle bolt holes and the annular column. A triangular fixed support is symmetrically connected to the outside of the annular column, and the fixed support is connected between the annular column and the half shell. The motor flange includes three motor bolt holes located on the edge of the half shell, one of which is located on the central axis of the half shell and forms an equilateral triangle with the other two motor bolt holes around the input hole. A reinforcement panel protruding from the surface of the half shell is provided in the area between the three motor bolt holes, and the reinforcement panel is provided with a weight-relief groove, and the arc-shaped weight-relief groove is further divided into at least two sections by reinforcement ribs. The width of the paper pad plane of the differential case is no more than 1 cm.

2. The rear axle assembly of a new energy leisure vehicle according to claim 1, characterized in that: The motor is provided with a center connecting plate, the center of which is provided with a motor output shaft hole, and the outside of the motor output shaft hole is provided with a differential case connecting flange symmetrical to the motor connecting flange of the differential case, the differential case connecting flange includes a flange plate and a connecting differential case bolt hole, three connecting differential case bolt holes are provided, forming an equilateral triangle position relationship, and a weight unloading groove is provided on the flange plate; the connecting motor flange and the differential case connecting flange are connected by bolts; six bolt holes are evenly distributed circumferentially on the outer edge of the center connecting plate for connecting to the main housing of the motor.

3. The rear axle assembly of a new energy leisure vehicle according to claim 1, characterized in that: The bearing is connected to the half shaft through a retaining spring.

4. The rear axle assembly of a new energy leisure vehicle according to claim 1, characterized in that: The edge of the differential case is located on both sides of the flange connecting the rear axle, and two process pressure points are symmetrically provided.

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