Rear axle assembly of all terrain vehicle

Abstract

The rear axle assembly of the dune buggy comprises a rear axle, a rear bottom fork, an eccentric cylinder, a spline housing, a rear hub seat, a rear axle cylinder spacer bush, a brake assembly and a chain wheel, the structure is simple, the rear bottom fork and the eccentric cylinder are matched with a rear shaft sleeving structure, so that rotation is stable, and the overall structure is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sand buggies, in particular to a rear axle assembly of a sand buggy. BACKGROUND

[0002] The sand buggy is a common name of all-terrain vehicle, also called "all-terrain four-wheel off-road vehicle", which can adapt to most terrains and is not limited by terrain conditions, and has good off-road performance. Since the vehicle needs to adapt to various terrain environments and needs to run on various harsh road conditions, the structural stability of the rear axle assembly is required to be high, and the existing rear axle assembly has a complex structure and poor overall structural stability. CONTENT OF THE UTILITY MODEL

[0003] In view of the existing defects, the technical problem to be solved by the utility model is to provide a rear axle assembly of a sand buggy which is simple in structure and stable in overall structure.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, the utility model is realized through the following technical measures: a rear axle assembly of a sand buggy, comprising a rear axle, a rear fork, an eccentric cylinder, a spline sleeve, a rear hub seat, a brake assembly and a sprocket, the rear axle is provided with a bearing connection and a spline part, the rear axle is provided with a rear hub seat connecting part at both ends, the rear hub seat is sleeved on the rear hub seat connecting part, the eccentric cylinder is sleeved on the rear axle, the rear fork is connected with the rear axle through the eccentric cylinder, the spline sleeve is sleeved on the spline part, the brake assembly and the sprocket are arranged on one side of the spline sleeve, the bearing connection part is provided with a bearing, and the eccentric cylinder and the rear axle are rotationally connected through the bearing.

[0005] Further, the center end of the rear axle is provided with a bearing connection and a spline part in sequence, the diameter of the center end is smaller than that of the bearing connection and the spline part, a rear axle cylinder spacer sleeve is sleeved on the center end, and the rear axle cylinder spacer sleeve is abutted by the bearing at both ends.

[0006] Further, the spline sleeve is provided with a center hole, the center hole is provided with a clamping tooth, the spline is provided with an oil seal connecting part for connecting an oil seal and a mounting part for connecting a brake disc and a sprocket.

[0007] Further, the spline part of the rear axle is provided with a clamping part on the side away from the bearing connection, and the clamping part is matched with a clamping spring to limit the spline sleeve.

[0008] Further, the spline part of the rear axle is provided with a fastening thread on the side away from the bearing connection, and the fastening thread is matched with a nut to limit the spline sleeve.

[0009] Further, the oil seal connecting part is provided with an oil seal, and one end of the oil seal is tightly abutted by the bearing.

[0010] Further, the rear wheel hub seat connecting part is respectively provided with a limiting position and an external thread at two ends.

[0011] Compared with the prior art, the rear axle assembly of the sand vehicle has the advantages that the structure is simple, the rear fork, the eccentric cylinder and the rear axle sleeve are matched to make the rotation stable, and the overall structure is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated herein in their entirety. The embodiments illustrated in the drawings are provided merely as examples of the present application and therefore should not be construed as limiting the present application. In the drawings:

[0013] Figure 1 FIG. 1 is a schematic view of the overall structure of the rear axle assembly of the sand vehicle according to the present application;

[0014] Figure 2 FIG. 2 is an exploded view of the partial parts of the rear axle assembly of the sand vehicle according to the present application.

[0015] Reference signs: 1, rear axle; 2, rear fork; 3, eccentric cylinder; 4, spline sleeve; 5, rear wheel hub seat; 6, rear wheel hub seat connecting part; 7, limiting position; 8, external thread; 9, bearing connecting position; 10, spline part; 11, clamping part; 12, fastening thread; 13, oil seal; 14, brake disc; 15, chain wheel; 16, oil seal connecting part; 17, mounting part; 18, rear axle cylinder spacer sleeve; 19, clamping spring; 20, nut; 21, bearing. DETAILED DESCRIPTION

[0016] Hereinafter, the present application will be described in detail with reference to the accompanying drawings and embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0017] In the description of the present application, it should be understood that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, “bottom”, “top”, etc. indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as limiting the device or element indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0018] Please refer to Figure 1 , Figure 2The rear axle assembly of the sand vehicle provided by the embodiment comprises a rear axle 1, a rear fork 2, an eccentric cylinder 3, a spline sleeve 4, a rear hub seat 5, a brake assembly and a sprocket 15, the rear axle 1 is provided with a rear hub seat connecting part 6 at both ends, the center end of the rear axle 1 is sequentially provided with a bearing connecting part 9, a spline part 10 and a clamping part 11 on one side, and sequentially provided with a bearing connecting part 9, a spline part 10 and a fastening thread 12 on the other side, the diameter of the center end is smaller than the diameter of the bearing connecting part 9 and the spline part 10, the center end is provided with a rear axle cylinder spacer sleeve 18, the bearing connecting part 9 is provided with a bearing 21, and the rear axle cylinder spacer sleeve 18 abuts against the bearing 21 at both ends to limit the bearing 21; the eccentric cylinder 3 is sleeved on the rear axle 1, the outer cylinder and the inner cylinder of the eccentric cylinder 3 are eccentrically arranged, the rear fork 2 is connected to the rear axle 1 through the eccentric cylinder 3 and used for connecting a main vehicle frame and a shock absorber; the spline sleeve 4 is sleeved on the spline part 10, the spline sleeve 4 is provided with a center hole, the center hole is provided with a clamping tooth, the spline sleeve 4 is provided with an oil seal connecting part 16 used for connecting an oil seal 13 and a mounting part 17 used for connecting a brake disc 14 and the sprocket 15, the oil seal 13 is used for isolating the bearing 21 and an external environment and ensuring normal operation of the bearing 21; the rear hub seat 5 is sleeved on the rear hub seat connecting part 6, one end of the rear hub seat connecting part 6 is provided with a limiting part 7, and the other end is provided with an external thread 8.

[0019] The rear axle assembly of the sand vehicle provided by the embodiment comprises a rear axle 1, a rear fork 2, an eccentric cylinder 3, a spline sleeve 4, a rear hub seat 5, a brake assembly and a sprocket 15, the rear axle 1 is provided with a rear hub seat connecting part 6 at both ends, the center end of the rear axle 1 is sequentially provided with a bearing connecting part 9, a spline part 10 and a clamping part 11 on one side, and sequentially provided with a bearing connecting part 9, a spline part 10 and a fastening thread 12 on the other side, the diameter of the center end is smaller than the diameter of the bearing connecting part 9 and the spline part 10, the center end is provided with a rear axle cylinder spacer sleeve 18, the bearing connecting part 9 is provided with a bearing 21, and the rear axle cylinder spacer sleeve 18 abuts against the bearing 21 at both ends to limit the bearing 21; the eccentric cylinder 3 is sleeved on the rear axle 1, the outer cylinder and the inner cylinder of the eccentric cylinder 3 are eccentrically arranged, the rear fork 2 is connected to the rear axle 1 through the eccentric cylinder 3 and used for connecting a main vehicle frame and a shock absorber; the spline sleeve 4 is sleeved on the spline part 10, the spline sleeve 4 is provided with a center hole, the center hole is provided with a clamping tooth, the spline sleeve 4 is provided with an oil seal connecting part 16 used for connecting an oil seal 13 and a mounting part 17 used for connecting a brake disc 14 and the sprocket 15, the oil seal 13 is used for isolating the bearing 21 and an external environment and ensuring normal operation of the bearing 21; the rear hub seat 5 is sleeved on the rear hub seat connecting part 6, one end of the rear hub seat connecting part 6 is provided with a limiting part 7, and the other end is provided with an external thread 8.

[0020] The rear axle assembly of the sand vehicle provided by the embodiment comprises a rear axle 1, a rear fork 2, an eccentric cylinder 3, a spline sleeve 4, a rear hub seat 5, a brake assembly and a sprocket 15, the rear axle 1 is provided with a rear hub seat connecting part 6 at both ends, the center end of the rear axle 1 is sequentially provided with a bearing connecting part 9, a spline part 10 and a clamping part 11 on one side, and sequentially provided with a bearing connecting part 9, a spline part 10 and a fastening thread 12 on the other side, the diameter of the center end is smaller than the diameter of the bearing connecting part 9 and the spline part 10, the center end is provided with a rear axle cylinder spacer sleeve 18, the bearing connecting part 9 is provided with a bearing 21, and the rear axle cylinder spacer sleeve 18 abuts against the bearing 21 at both ends to limit the bearing 21; the eccentric cylinder 3 is sleeved on the rear axle 1, the outer cylinder and the inner cylinder of the eccentric cylinder 3 are eccentrically arranged, the rear fork 2 is connected to the rear axle 1 through the eccentric cylinder 3 and used for connecting a main vehicle frame and a shock absorber; the spline sleeve 4 is sleeved on the spline part 10, the spline sleeve 4 is provided with a center hole, the center hole is provided with a clamping tooth, the spline sleeve 4 is provided with an oil seal connecting part 16 used for connecting an oil seal 13 and a mounting part 17 used for connecting a brake disc 14 and the sprocket 15, the oil seal 13 is used for isolating the bearing 21 and an external environment and ensuring normal operation of the bearing 21; the rear hub seat 5 is sleeved on the rear hub seat connecting part 6, one end of the rear hub seat connecting part 6 is provided with a limiting part 7, and the other end is provided with an external thread 8.

Claims

1. An ATV rear axle assembly characterized by: Including rear axle (1), rear fork (2), eccentric cylinder (3), spline sleeve (4), rear hub seat (5), brake assembly and sprocket (15), the rear axle (1) is equipped with bearing connection (9), spline part (10), rear axle (1) both ends are equipped with rear hub seat connecting part (6), the rear hub seat (5) is sleeved in rear hub seat connecting part (6), the eccentric cylinder (3) is sleeved in rear axle (1), and rear fork (2) is connected with rear axle (1) by eccentric cylinder (3), the spline sleeve (4) is sleeved in spline part (10), brake assembly and sprocket (15) are arranged at one side of spline sleeve (4) respectively, bearing (21) is equipped with bearing (21) on bearing (21) connecting part, and eccentric cylinder (3) is rotatably connected with rear axle (1) by bearing (21).

2. The rear axle assembly of the ATV according to claim 1, characterized in that: The both sides of the center end of the rear axle (1) are provided with bearing connection (9) and spline part (10) in sequence, the diameter of the center end is less than the diameter of bearing connection (9) and spline part (10), the center end is sleeved with rear axle cylinder spacer sleeve (18), and the both ends of rear axle cylinder spacer sleeve (18) abut against bearing (21).

3. An ATV rear axle assembly as claimed in claim 1 or 2, characterized in that: The spline sleeve (4) is provided with a center hole, the center hole is provided with a clamping tooth, the spline is provided with an oil seal connecting part (16) for connecting an oil seal (13) and an installation part (17) for connecting a brake disc (14) and a sprocket (15).

4. The rear axle assembly of the ATV according to claim 3, characterized in that: The spline sleeve (4) is provided with a clamping part (11) on the side away from the bearing (21) connecting part of the spline part (10) of the rear axle (1), the clamping part (11) is matched with a clamping spring (19) to limit the spline sleeve (4).

5. The rear axle assembly of the ATV according to claim 3, characterized in that: The spline sleeve (4) is provided with a fastening thread (12) on the side away from the bearing (21) connecting part of the spline part (10) of the rear axle (1), and the fastening thread (12) is matched with a nut (20) to limit the spline sleeve (4).

6. The rear axle assembly of the ATV according to claim 3, characterized in that: The oil seal connecting part (16) is provided with an oil seal (13), and one end of the oil seal (13) is in close contact with the bearing (21).

7. The rear axle assembly of the ATV according to claim 1 or 2, characterized by: The both ends of the rear hub seat connecting part (6) are respectively provided with a limiting part (7) and an external thread (8).

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