CN111497990B - A three-wheel electric vehicle rear suspension assembly - Google Patents

Abstract

The invention discloses a rear suspension assembly of a three-wheeled electric vehicle, comprising a rear axle frame, two swing arms symmetrically arranged on both sides of the rear axle frame, and rear wheels are respectively installed on the two swing arms; the rear axle frame is provided with a step shaft, the step shaft is parallel to the axis of the wheel axle of the rear wheel, and each of the swing arms is rotatably sleeved on the step shaft; the two swing arms are provided with eccentric arms extending in opposite directions, and the free ends of the two eccentric arms are respectively hinged to two push arms through a first pivot, and the free ends of the two push arms are both connected to a second pivot, and the two ends of the second pivot are connected together through a rotating mechanism. Under the joint action of the eccentric arms, the first pivot, the second pivot and the rotating mechanism, the two swing arms of the invention can swing upward and downward respectively relative to the rear axle frame, so that when the electric tricycle turns, the wheel axles of the two rear wheels can be completely parallel, and the centrifugal force caused by the turn can be offset, thereby improving the safety of driving.

Description

A three-wheel electric vehicle rear suspension assembly

Technical Field

The invention belongs to the technical field of mechanical movement of electric vehicles, and in particular relates to a rear suspension assembly of a three-wheeled electric vehicle.

Background Art

There are few types of electric vehicle rear axle double swing arm suspension mechanisms on the market. In order to further develop and grow the company, the company conducted market research and determined to independently develop electric vehicle rear axle double swing arm suspension mechanisms, which can not only meet market demand but also broaden the company's development path. The use of advanced mechanisms has further improved the company's independent innovation capabilities, increased the market competitiveness of products, and created new economic growth points for the company. Through continuous technological transformation, the company not only brings new development opportunities to the company, but also drives the synchronous development of the industry and provides strong support for the national economy.

The existing double swing arm mechanism of the rear axle of electric vehicles has the defects of unstable structure, short service life and low safety. Therefore, the demand for new double swing arm suspension mechanism of the rear axle of electric vehicles is urgent.

Summary of the invention

Therefore, the main purpose of the present invention is to solve the above-mentioned problems and provide a rear suspension assembly for a three-wheeled electric vehicle.

To achieve the above purpose, the technical solution adopted by the present invention is to provide a rear suspension assembly of a three-wheeled electric vehicle, including a rear axle bridge frame, two swing arms symmetrically arranged on both sides of the rear axle bridge frame, and rear wheels are respectively installed on the two swing arms;

The rear axle frame is provided with a stepped shaft, which is parallel to the axis of the wheel axle of the rear wheel, and each of the swing arms is rotatably sleeved on the stepped shaft;

The two swing arms are provided with eccentric arms extending in opposite directions, and the free ends of the two eccentric arms are respectively hinged to two push arms through a first pivot, and the free ends of the two push arms are connected to a second pivot, and the two ends of the second pivot are connected together through a rotating mechanism; when the three-wheeled electric vehicle turns, the two push arms move forward or backward at the same time, one of the swing arms moves upward around the step axis relative to the rear axle frame, and the other swing arm moves downward around the step axis relative to the rear axle frame; the inner side of the swing arm is provided with a groove.

The rotating mechanism includes two first rotating arms hingedly connected to the two ends of the second pivot through a third pivot, and a second rotating arm hingedly connected to the free ends of the two first rotating arms through a fourth pivot, and the free ends of the two second rotating arms are hingedly connected to the rear axle frame through a fifth pivot; the axes of the third pivot, the fourth pivot and the fifth pivot are parallel, and the axes of the third pivot, the fourth pivot and the fifth pivot are perpendicular to the axes of the step shaft, the first pivot and the second pivot; when the electric tricycle turns, the second pivot moves forward and backward, thereby driving the first rotating arm to rotate around the third pivot relative to the second pivot, the second rotating arm to rotate around the fourth pivot relative to the first rotating arm, and the second rotating arm to rotate around the fifth pivot relative to the rear axle frame.

The beneficial effects of the present invention are:

The rear suspension assembly of the three-wheeled electric vehicle of the present invention has two swing arms that swing upward and downward respectively relative to the rear axle frame under the joint action of the eccentric arm, the first pivot, the second pivot and the rotating mechanism, so that when the electric three-wheeled vehicle turns, the axles of the two rear wheels can be completely parallel, and the centrifugal force caused by the turn can be offset, thereby improving driving safety.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of the present invention;

FIG2 is a cross-sectional view of the swing arm position of the present invention;

FIG3 is a perspective exploded view of a partial structure of the present invention;

FIG4 is a perspective view of a partial structure of the present invention;

FIG. 5 is a three-dimensional diagram of a partial structure of the present invention from another viewing angle.

DETAILED DESCRIPTION

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

Referring to FIG. 1 to FIG. 5 , the present invention provides a rear suspension assembly of a three-wheeled electric vehicle, comprising a rear axle frame 1, two swing arms 2 symmetrically arranged on both sides of the rear axle frame 1, and rear wheels 3 are respectively mounted on the two swing arms 2;

The rear axle frame 1 is provided with a stepped shaft 4, which is parallel to the axis of the wheel axle 5 of the rear wheel 3, and each of the swing arms 2 is rotatably sleeved on the stepped shaft 4;

The two swing arms 2 are provided with eccentric arms 6 extending in opposite directions, and the free ends of the two eccentric arms 6 are hinged to two push arms 8 through a first pivot 7 respectively, and the free ends of the two push arms 8 are connected to a second pivot 9, and the two ends of the second pivot 9 are connected together through a rotating mechanism; when the three-wheeled electric vehicle turns, the two push arms 8 move forward or backward at the same time, one of the swing arms 2 moves upward around the step shaft 4 relative to the rear axle frame 1, and the other swing arm 2 moves downward around the step shaft 4 relative to the rear axle frame 1; the inner side of the swing arm 2 is provided with a groove.

The rotating mechanism includes two first rotating arms 11 hingedly connected to the two ends of the second pivot 9 through a third pivot 10, and a second rotating arm 13 hingedly connected to the free ends of the two first rotating arms 11 through a fourth pivot 12, and the free ends of the two second rotating arms 13 are hingedly connected to the rear axle bridge frame 1 through a fifth pivot 14; the axes of the third pivot 10, the fourth pivot 12, and the fifth pivot 14 are parallel, and the axes of the third pivot 10, the fourth pivot 12, and the fifth pivot 14 are perpendicular to the axes of the step shaft 4, the first pivot 7, and the second pivot 9; when the electric tricycle turns, the second pivot 9 moves forward and backward, thereby driving the first rotating arm 11 to rotate around the third pivot 10 relative to the second pivot 9, the second rotating arm 13 to rotate around the fourth pivot 12 relative to the first rotating arm 11, and the second rotating arm 13 to rotate around the fifth pivot 14 relative to the rear axle bridge frame 1.

The working principle of the three-wheeled electric vehicle of the present invention is described below:

When the three-wheeled vehicle turns, the second pivot 9 moves forward and backward. When turning left, the left rear wheel 15 rises, and correspondingly, the right rear wheel 16 falls; when turning right, the right rear wheel 16 rises, and correspondingly, the left rear wheel 15 falls. Specifically, when the three-wheeled electric vehicle turns left, the left rear wheel 15 rises, so that the left swing arm 2 flips upward around the step shaft 4, and then the eccentric arm 6 on the left swing arm 2 rotates around the step shaft 4 and has a forward displacement. This forward displacement causes the two ends of the left push arm 8 to rotate around the first pivot 7 and the second pivot 9 respectively. At the same time, the entire left push arm 8 has a tendency to move forward, and the left push arm 8 produces a forward displacement, so that the second pivot 9 has a forward displacement, and the two ends of the second pivot 9 are respectively rotated by the first The arm 11 and the second rotating arm 13 are hingedly connected to the rear axle bridge frame 1, so that when the second pivot 9 moves forward, the pushing arm 8 on the right side is driven forward, and then the eccentric arm 6 on the right swing arm 2 is driven to rotate around the step shaft 4. The rotation direction is opposite to the rotation direction of the eccentric arm 6 on the left swing arm 2, and finally the right swing arm 2 is driven to flip downward around the step shaft 4, so that the right rear wheel 16 drops, thereby completing the eccentric movement of the two rear wheels 3. When the electric tricycle turns, the gravity and centrifugal force of the vehicle and the driver are offset to achieve the purpose of safe driving.

The above is a detailed introduction to the rear suspension assembly of the three-wheeled electric vehicle provided in the embodiment of the present invention. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the technical solutions disclosed by the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation modes and application scopes. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims (2)

1. The rear suspension assembly of the three-wheeled electric vehicle is characterized by comprising a rear axle bridge frame and two swing arms symmetrically arranged at two sides of the rear axle bridge frame, wherein rear wheels are respectively arranged on the two swing arms;

the rear axle bridge is provided with a step shaft, the step shaft is parallel to the axis of the wheel shaft of the rear wheel, and each swing arm is rotatably sleeved on the step shaft;

The two swing arms are provided with eccentric arms extending in opposite directions, the free ends of the two eccentric arms are hinged with two pushing arms through first pivots respectively, the free ends of the two pushing arms are connected to second pivots respectively, the two ends of the second pivots are connected together through rotating mechanisms, when the three-wheeled electric vehicle turns, the two pushing arms move forwards or backwards at the same time, one of the swing arms moves upwards relative to the rear axle bridge around the step shaft, the rear wheel corresponding to one side of the swing arm rises, the eccentric arm on the swing arm rotates around the step shaft and has forward displacement, the two ends of the pushing arm corresponding to one side rotate around the first pivots and the second pivots respectively, meanwhile, the pushing arm corresponding to one side has forward movement tendency, and generates forward displacement, so that the second pivots have forward movement displacement, the two ends of the second pivots are hinged with the rear axle respectively through the first rotating arm and the second rotating arm, the other side of the swing arm is driven to rotate around the step shaft, the other side of the swing arm rotates downwards relative to the opposite side of the swing arm, and the other side of the swing arm rotates downwards relative to the step shaft, and the opposite side of the swing arm rotates downwards, and the opposite side of the swing arm rotates around the step shaft is driven to rotate around the opposite side of the step shaft, and the opposite side of the swing arm rotates around the opposite side.

2. The three-wheeled electric vehicle rear suspension assembly of claim 1, wherein the rotating mechanism comprises two first rotating arms hinged at two ends of the second pivot through a third pivot, and second rotating arms hinged with free ends of the two first rotating arms through a fourth pivot respectively, the free ends of the two second rotating arms are hinged on the rear axle bridge through a fifth pivot respectively, axes of the third pivot, the fourth pivot and the fifth pivot are parallel, and axes of the third pivot, the fourth pivot and the fifth pivot are perpendicular to axes of the step shaft, the first pivot and the second pivot, when the electric tricycle turns, the second pivot moves back and forth, so that the first rotating arm is driven to rotate around the third pivot relative to the second pivot, the second rotating arm rotates around the fourth pivot relative to the first rotating arm, and the second rotating arm rotates around the fifth pivot relative to the rear axle.