The present invention relates to a three-in-one mounting system for a two-wheeler. The mounting comprises two mounting plates connected from top and bottom with the lateral members of the vehicle chassis.
BACKGROUND OF THE INVENTION
The stability performance of a two-wheeler is lost if the suspension of the motorcycle allows the wheels to be excessively forced from their plane of rotation. For example, the rear wheel, rotatably attached to a rigid swing arm, a standard design in the art, is particularly exposed to such forces during turns. Any excess deflection from its vertical plane during a high-speed turn can seriously impact stability and handling causing an unsafe condition. It is therefore important to limit, any movement of the rear swing arm that is in a direction other than that within its intended vertical movement.
Most of the time, the motor, rear suspension, etc, are supported by the vehicle's chassis. The chassis of two-wheelers is a frame, usually a combination of tubes and sheets most often manufactured of steel that can be arranged in a variety of different design configurations for different styles and types of bikes. The frame is preferably designed to have sufficient stiffness and rigidity. However, the motor, suspension and other additional elements add stress to the chassis.
There are mainly three types of power transmission systems in the two-wheeler market i.e., Hub motor (low-speed scooters), Swing-arm mounted motor (mid-level scooters), and mid-mounted motor system (high-performance motorcycle). All three systems have their advantages and disadvantages associated with them. For a performance-oriented case, a mid-mounted motor system is the most preferred due to its better dynamic characteristic and lesser un-sprung weight.

But traditional mid-drive two-wheelers and almost all ICE (Internal Combustion Engine) motorcycles, due to their design, require a chain drive. It is because the swing arm pivot and the center of the power shaft are not coincident. Therefore, while in action, only the chain and sprocket system can accommodate the tension and slack without derailment and sometimes by the use of a tensioner sprocket. Few two-wheelers use idler pulley in belt drive but it increases both the complexities and cost of the design. The chain drive is noisy and requires regular maintenance.
For a smoother, noiseless and maintenance-free operation of the transmission, belt drive is preferred especially in electronic vehicles. The current electronic vehicles solve the problem by using a tensioner pulley to compensate for the belt slack, (e.g. Harley Davidson Livewire). Another way to resolve this is to use idler gear. However, both these walkarounds add more components, complexities, additional mechanical loss and higher costs.
The swing arm mounted motor solves the problem but adds to the un-sprung weight worsening the driving dynamics.
Therefore, there is a need in the art to provide a system or a component which can solve the existing problem without adding complexities or cost to the existing system.
Accordingly, an improved system and method of mounting a motor, swing arm and shockers in a two-wheeler chassis that provides the best possible solution for dampening the noise and vibrations at various stages, and minimizing unbalancing forces at turns and other manoeuvres are required.
The inventors of the present invention have solved the above problems by providing a three-in-one integrated mounting system providing a mount for the swing arm in a manner such that its pivot centre coincides with the centre of the

motor output shaft. The mounting system according to the present invention provides a robust mounting for the motor, a bracket for the rear shock and also provides a truss for the chassis- increasing its stiffness.
SUMMARY OF THE INVENTION
In an embodiment, the present invention provides a system comprising two mounting plates connected on the lateral members of the vehicle chassis at the top and the bottom.
According to an embodiment, the present invention provides an integrated mounting system comprising two mounting plates having the following means -
a. mounting points (9,11) at its opposite end;
b. attachment point/mounting bracket (12) at the proximal end for the
shock absorbers;
c. shaft bore (14) and attachment points (7) for mounting and
supporting the motor;
d. shaft member (13) holding a bearing/bush (4) for mounting and
supporting the swing arm.
According to an embodiment of the present invention, the shaft bore (14) allows the motor shaft (6) to pass through it and the motor is attached with the attachment points provided along the shaft bore to keep the motor in position.
According to an embodiment of the present invention, the motor shaft is attached to the output gear (5).
According to an embodiment of the present invention, the shaft member (13) holding a bearing/bush (4) mounts the swing arm (3) in a manner that the pivot centre of the arm coincides with the centre of the motor output shaft, providing a fixed distance between the output shaft and the rear wheel axis.

In yet another embodiment, the present invention provides a method of integrating a mounting system, comprising the steps of-
1. providing left and right mounting plates (1);
2. fixing the top and bottom end of the mounting plate on the lateral beams of the chassis (10) through mounting points (9,11);
3. connecting the shock absorbers at the attachment point (12) given at the proximal end of the plates (1);
4. connecting the motor through the shaft bore (14) and attachment points (7) provided on the distal lower end of the mounting plates;
5. connecting the swing arm (3) to the shaft member (13) holding a bearing/bush (4),
wherein the pivot centre of the swing arm coincides with the centre of the motor output shaft providing a fixed distance between the output shaft and the rear wheel axis.
According to an embodiment, the present invention provides a two-wheeler comprising an integrated mounting system of the present invention. According to an embodiment, the two-wheeler is a motorcycle, scooter, moped or bike powered by ICE or electric motor.
BRIEF DESCRIPTION OF THE DRAWINGS
The exemplary embodiments herein may be better understood by referring to the following description in conjunction with the accompanying drawings in which like reference numerals indicate identically or functionally similar elements, of which:
Figure 1 illustrates the chain and sprocket system known in the art; Figure 2 illustrates another chain and sprocket system known in the art;

Figure 3 illustrates various positions of the swing arm according to the known
technologies;
Figure 4 illustrates the rear suspension system according to an embodiment of the
present invention.
Figure 5 illustrates the three-component rear suspension system according to an
embodiment of the present invention.
Figure 6 illustrates another view of the rear suspension system according to an
embodiment of the present invention.
It should be understood that the above-referenced drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the disclosure. The specific design features of the present disclosure, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular intended application and use environment.
DETAILED DESCRIPTION OF THE INVENTION
The terminology used herein is to describe particular embodiments only and is not intended to be limiting to the present disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any or all combinations of one or more of the associated listed items.
It is understood that the term "two-wheeler", "scooter", "bike" or other similar terms as used herein is inclusive of vehicles, in general, such as automobiles including sports bikes, electronic bikes, and the like.

Traditional mid-drive two-wheelers and almost all ICE (Internal Combustion Engine) motorcycles, due to their design, require a chain drive as shown in Figures 1 and 2. As shown in Figure 3, the swing arm pivot and the center of the power shaft are not coincident, only the chain and sprocket system can accommodate the tension and slack without derailment and sometimes by the use of a tensioner sprocket. Few two-wheelers use idler pulleys in belt drive but that increases both the complexities and cost of the design. The chain drive is noisy and generates a lot of vibrations.
The present invention provides an integrated three-in-one mounting system for mounting the swing arm in a manner so that the pivot centre of the arm coincides with the centre of the motor output shaft. The mounting system not only provides a robust mounting for the motor and top mounting for the rear shock but also provides a truss for the chassis reducing the direct load on it.
As shown in figure 4, the system according to an embodiment of the present invention comprises two symmetrical halves connected on the lateral members of the vehicle chassis at the top and the bottom. The mounting system comprises at least one mounting plate (1) with the following components-
1. left and right mounting points (11, 9) at opposite ends;
2. attachment point (12) at the proximal end for the rear shock absorber;
3. the shaft bore (14) surrounded with attachment points (7) in the lower portion for supporting the motor;
4. the shaft member (13) holding a bearing/bush (4) for supporting the swing arm
wherein the mounting left and right mounting points on the opposite end of the said plate connect the mounting system to the vehicle's chassis.
The mounting plates are designed to accommodate the motor used. Also, for assembly and disassembly, they are constructed in two parts. As shown in figure

5, the left and right mounting plate (1), is fixed to the top and bottom lateral beams of the chassis (10) through mounting points (11 & 9) provided on the opposite ends. The motor and rear shock absorber through attachment points (7, 12) are fixed on the mounting plate through the mounting pins (2).
The motor shaft (6) passes through the shaft bore (14) which keep it in position. The motor shaft is attached to the output gear (5) as shown in Figure 6. The shaft member (13) holding a bearing/bush (4), supports the swing arm (3).
This entire arrangement forms the mounting system according to the present invention.
The system according to the present invention is configured in such a manner that the swing arm is mounted in such a way that its pivot centre coincides with the centre of the motor output shaft. This provides a fixed distance between the output shaft of the motor and the rear wheel axis. Therefore, when the suspension is in action, unlike conventional design, there is no slack and tension variation on the driving belt.
In addition to this mounting, the motor is strongly mounted on the system unlike being fixed on the chassis in the prior art. It also provides top mounting for the rear shockers. This contributes to the modular aspects of the vehicle design and the multi-function part reduces the number of components and manufacturing process and hence the cost.
Overall the mounting system of the present invention provides support to the chassis by taking away the direct load from it and acting like a chassis.
According to another embodiment, the present invention also provides a method of providing an integrated mounting system, comprising the steps of-1. providing left and right mounting plates (1);

2. fixing the top and bottom end of the mounting plate through mounting points on the lateral beams of the chassis (10);
3. connecting the rear shock absorber at the attachment point (12) provided on the proximal end of the mounting plate (1);
4. connecting the motor through the shaft bore (14) and attachment points (7) provided on the distal lower end of the mounting plate;
5. connecting the swing arm (3) to the shaft member (13) holding a bearing/bush (4),
wherein the swing arm is connected to the mounting plate in such a way that its pivot centre coincides with the centre of the motor output shaft.
The system and method according to the present invention provide a robust mounting for the motor and top mounting for the rear shock and swing arm. It also provides a truss for the chassis reducing the direct load from it. By virtue of the design, wherein the distance between the motor shaft and rear wheel axle is fixed, power transmission is smoother regardless of the state of the rear suspension and the life of the belt is improved due to lesser strain on it.
According to yet another embodiment, the present invention provides a two-wheeler, which comprises the mounting system according to an embodiment of the present invention, the mounting system comprises of at least one mounting plate (1) configured to connect the following components-
1. left and right mounting points (11, 9) at opposite ends;
2. attachment point (12) at the proximal end for the rear shock absorber;
3. the shaft bore (14) surrounded with attachment points (7) in the lower portion for supporting the motor;
4. the shaft member (13) holding a bearing/bush (4) supporting the swing arm;
5. the outer portion of the motor shaft connects to the output gear (5);

wherein the mounting left and right mounting points on the opposite end of the said plate connect the mounting system to the vehicle's chassis.
According to another embodiment, the two-wheeler of the present invention is selected from a bike, scooter, or electric bike.

We claim-

1. An integrated mounting system compri sing-
two mounting plates having -
mounting points (9,11) at the opposite end;
attachment point (12) at the proximal end for the shock absorbers;
shaft bore (14) and attachment points (7) for mounting and supporting the
motor;
shaft member (13) holding a bearing/bush (4) for mounting and supporting
the swing arm,
2. The integrated mounting system as claimed in claim 1, wherein the shaft bore (14) allows the motor shaft (6) to pass through it and the motor is attached with the attachment points provided along the shaft bore to keep the motor in position.
3. The integrated mounting system as claimed in claim 2, wherein the motor shaft is attached to the output gear (5).
4. The integrated mounting system as claimed in claim 1, wherein the shaft member (13) holding a bearing/bush (4) mounts the swing arm (3) in a manner that the pivot centre of the arm coincides with the centre of the motor output shaft, providing a fixed distance between the output shaft and the rear wheel axis.
5. A method of providing an integrated mounting system, comprising the steps of-

1. providing left and right mounting plates (1);
2. fixing the top and bottom end of the mounting plate on the lateral beams of the chassis (10) through mounting points (9,11);

3. connecting the shock absorbers at the attachment point (12) given at the proximal end of the plates (1);
4. connecting the motor through the shaft bore (14) and attachment points (7) provided on the distal lower end of the mounting plates;
5. connecting the swing arm (3) to the shaft member (13) holding a bearing/bush (4),
wherein the pivot centre of the swing arm coincides with the centre of the motor output shaft providing a fixed distance between the output shaft and the rear wheel axis.
6. A two-wheeler comprising an integrated mounting system as claimed in claim 1.
7. The two-wheeler as claimed in claim 6, wherein it is a motorcycle, scooter, moped or bike powered with ICE or electric motor.