Offset driven axle giving consideration to four-wheel drive type

Abstract

The invention discloses an offset driven axle giving consideration to a four-wheel-drive vehicle type, and aims to solve the problem that the travel of a plate spring is small, so that the comfort and the arrangement space of the vehicle are influenced. According to the technical scheme, the brake device is characterized by comprising two sets of symmetrically-distributed wheel end supports, brake discs are installed on the wheel end supports on the two sides, brake calipers are installed on the brake discs on the two sides, an axle tube is fixedly connected between the wheel end supports on the two sides, and plate spring supports are fixedly connected to the upper end faces of the wheel end supports on the two sides; the plate spring supports on the two sides are each provided with a plate spring module. The plate spring is installed by arranging the wheel end support, installation downward deviation of the plate spring is achieved, the stroke of the plate spring and the arrangement space of the driving shaft are increased, arrangement feasibility is improved, and the comfort of the whole vehicle is better.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive driven axles, and more specifically, it relates to an offset driven axle that takes into account four-wheel drive vehicles. Background Art

[0002] In the field of automotive chassis design, a driven axle, that is, a non-driving axle, also known as a driven axle shaft, is connected to the vehicle frame (or a unitized body) through a suspension, and driven wheels are installed at both ends to transmit vertical forces, longitudinal forces, and lateral forces between the vehicle frame (or unitized body) and the wheels. The driven axle also bears and transmits braking torques.

[0003] In a traditional driven axle, the leaf spring support is welded to the axle tube. However, this design, in terms of the chassis layout and the layout position of the drive shaft, will result in a reduction in the full and empty travel of the leaf spring and an increase in the leaf spring stiffness while ensuring the vehicle height and sufficient ground clearance of the axle tube, thereby reducing the comfort of the whole vehicle. At the same time, with the same wheelbase, the layout space of the chassis is reduced. Especially for current new energy vehicles, the layout space of the chassis affects the boundary dimensions of the battery pack, thus affecting the driving range of the whole vehicle.

[0004] Therefore, a solution is needed to solve this problem. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an offset driven axle that takes into account four-wheel drive vehicles. By setting wheel end brackets to install the leaf spring, the installation of the leaf spring is offset downward, increasing the travel of the leaf spring and the layout space of the drive shaft, increasing the feasibility of the layout, and making the comfort of the whole vehicle better.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: An offset driven axle that takes into account four-wheel drive vehicles includes two groups of symmetrically distributed wheel end brackets. Brake discs are installed on both sides of the wheel end brackets, and brake calipers are installed on both sides of the brake discs. An axle tube is fixedly connected between the two sides of the wheel end brackets. Leaf spring supports are fixedly connected to the upper end faces of the two sides of the wheel end brackets, and leaf spring modules are installed on both sides of the leaf spring supports.

[0007] The present invention is further configured as: Axle tube flanges are fixed at both ends of the axle tube, and the axle tube flanges at both ends are respectively connected to the wheel end brackets on both sides through bolts.

[0008] The present invention is further configured as: A dust cover is installed on the wheel end bracket.

[0009] The present invention is further configured as: Limit brackets are fixedly connected to the upper end faces of the two sides of the wheel end brackets.

[0010] The present invention is further configured such that hub bearings are provided inside both of the brake discs on two sides, and drive shafts with one end cooperatively connected thereto are provided on both of the hub bearings, and the other end of the drive shaft is connected to a drive motor.

[0011] The present invention is further configured such that splines for cooperatively connecting with the drive shaft are provided inside the hub bearings.

[0012] The present invention is further configured such that the leaf spring module is locked and fixed to the bolt bracket by U-bolts.

[0013] In summary, the present invention has the following beneficial effects:

[0014] By providing a wheel end bracket to install the leaf spring, the present invention realizes the downward deviation of the installation of the leaf spring, increases the stroke of the leaf spring and the layout space of the drive shaft, increases the feasibility of the layout, can increase the layout space of the battery pack or the four-wheel drive motor, improves the cruising range of the whole vehicle or increases the selection size of the motor, and makes the comfort of the whole vehicle better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0016] In the figure: 1, wheel end bracket; 2, brake disc; 3, brake caliper; 4, axle tube; 5, leaf spring support; 6, leaf spring module; 7, axle tube flange; 8, limit bracket; 9, drive shaft; 10, U-bolt; 11, hub bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0018] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0019] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0020] The present invention will be described in detail below with reference to the accompanying drawings.

[0021] An offset driven axle that takes into account four-wheel drive vehicles, as Figure 1 shown, includes two groups of symmetrically distributed wheel end brackets 1. The wheel end brackets 1 are in the shape of a folded angle with one end folded upwards. Brake discs 2 are installed on both sides of the wheel end brackets 1, and brake calipers 3 are installed on both sides of the brake discs 2. A dust cover is installed on the wheel end brackets 1.

[0022] A bridge tube 4 is fixedly connected between the two sides of the wheel end brackets 1. Plate spring supports 5 are fixedly connected to the upper end surfaces of the two sides of the wheel end brackets 1. Plate spring modules 6 are installed on both sides of the plate spring supports 5. The plate spring modules 6 are locked and fixed to the plate spring supports 5 by U-bolts 10.

[0023] Bridge tube flanges 7 are fixed at both ends of the bridge tube 4. The bridge tube flanges 7 at both ends are respectively connected to the wheel end brackets 1 on both sides by bolts.

[0024] Limit brackets 8 are fixedly connected to the upper end surfaces of the two sides of the wheel end brackets 1. The limit brackets 8 are used to limit the buffer blocks for up and down impacts.

[0025] Hub bearings 11 are arranged inside both sides of the brake discs 2. Drive shafts 9 with one end cooperatively connected thereto are arranged on both sides of the hub bearings 11. The other ends of the drive shafts 9 are connected to drive motors. Splines for cooperatively connecting with the drive shafts 9 are arranged inside the hub bearings 11.

[0026] By setting the wheel end brackets 1 in the shape of a folded angle, the plate spring is installed with a downward offset. Under the condition of the same vehicle height and ground clearance, the downward offset can effectively increase the full and empty load travel of the plate spring, and at the same time, it can also increase the layout space of the drive shaft 9. At the same time, the downward offset setting can also increase the layout space of the battery pack or the four-wheel drive motor, improving the vehicle's cruising range or increasing the selection size of the motor.

[0027] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An offset driven axle for a four-wheel drive vehicle, characterized in that: The invention comprises two groups of symmetrically distributed wheel end brackets (1), brake discs (2) are installed on the wheel end brackets (1) on both sides, brake calipers (3) are installed on the brake discs (2) on both sides, a bridge tube (4) is fixedly connected between the wheel end brackets (1) on both sides, leaf spring supports (5) are fixedly connected to the upper end surfaces of the wheel end brackets (1) on both sides, and leaf spring modules (6) are installed on the leaf spring supports (5) on both sides.

2. The offset driven axle of a four-wheel drive vehicle according to claim 1, characterized in that: Bridge pipe flanges (7) are fixed to both ends of the bridge pipe (4), and the bridge pipe flanges (7) at both ends are respectively connected to the wheel end brackets (1) on both sides by bolts.

3. The offset driven axle of a four-wheel drive vehicle according to claim 1, characterized in that: A dust cover is installed on the wheel end bracket (1).

4. The offset driven axle of a four-wheel drive vehicle according to claim 1, characterized in that: The upper end surfaces of the wheel end brackets (1) on both sides are fixedly connected to limit brackets (8).

5. The offset driven axle of a four-wheel drive vehicle according to claim 1, characterized in that: Hub bearings (11) are arranged in the brake discs (2) on both sides, and drive shafts (9) are arranged on the hub bearings (11) on both sides with one end thereof being matched and connected thereto, and the other end of the drive shaft (9) is connected to a drive motor.

6. The offset driven axle of a four-wheel drive vehicle according to claim 5, characterized in that: The wheel hub bearing (11) is provided with a spline for matching and connecting with the drive shaft (9).

7. The offset driven axle of a four-wheel drive vehicle according to claim 1, characterized in that: The leaf spring module (6) is locked and fixed on the bolt bracket by means of U-shaped bolts (10).

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