Field of Invention
The present system, in general relates to a braking system in two wheeler vehicles, and in particular relates to the arrangement of mechanical integrated brake system on a motorcycle having minimum two service brakes and drum brake on the rear wheel.

Background of the invention
Every motorcycle with rear drum brake consists of a backing plate onto which the cam, brake shoes, springs, and the lever are fixed. The springs control the movement of brake shoes that are actuated by rotation of the cam on its own axis, which in turn is connected to the lever. The lever is connected with the foot brake pedal via brake rod or a cable. The braking torque on a motorcycle with rear drum brake is absorbed by the mechanical link that is normally connected to the swing arm or the rigid frame of the motorcycle. In a vehicle without combined brake, when the rear brake lever or the brake pedal is operated, brake will be applied only on the rear wheel. If the force applied by the rider is high, the rear wheel would lock, leading to an accident. In a combined brake system, both front and rear brakes are applied in a certain proportion. This reduces the possibility of rear wheel locking. Thus, combined brake enhances safety of the rider. Combined braking system is fitted to motorcycle to enable simultaneous braking of both service brakes.
The function of the mechanical integrated brake system (which is a combined braking system) is to simultaneously actuate both, front and rear brakes, on pressing the brake foot pedal of a motorcycle. This is achieved by linking actuators from both service brakes to a common distributor block. To install such combined braking system in any motorcycle, it is required and desirable that this installation should be done with minimal changes in conventional chassis design of any motorcycle.
The present invention is disclosing an arrangement of mechanical integrated brake system onto the mechanical link connecting the rear drum brake to the swing arm or the rigid frame of a motorcycle.

Objective of the invention
The objective of the present invention is to propose the arrangement of a mechanical integrated brake (MIB) system onto the mechanical link connecting the rear drum to the swing arm or the rigid frame of the motorcycle in such a way so as minimal changes required to the motorcycle chassis design.
Yet another objective of the present invention is to retrofit the mechanical integrated brake (MIB) system on any motorcycle having rear drum brake.

Brief description of the accompanying drawings
The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
Figure-1 shows the schematic representation of the arrangement of mechanical integrated brake (MIB) system on a motorcycle with non-floating type rear drum brake.
Figure-2 shows the schematic representation of the arrangement of mechanical integrated brake (MIB) system on a motorcycle with floating type rear drum brake.
Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.

Detailed description of the invention
The following is a detailed description of exemplary embodiments to illustrate the principles of the invention. The embodiments are provided to illustrate aspects of the invention, but the invention is not limited to any embodiment. The scope of the invention encompasses numerous alternatives, modifications and equivalent; it is limited only by the claims.
Numerous specific details are set forth in the following description in order to provide a thorough understanding of the invention. However, the invention may be practiced according to the claims without some or all of these specific details. For the purpose of clarity, technical material that is known in the technical fields related to the invention has not been described in detail so that the invention is not unnecessarily obscured.
Combined braking system is fitted to motorcycle to enable simultaneous braking of both service brakes. This is achieved by linking actuators from both service brakes to a common distributor block. It becomes important to locate the distributor block in such a way so as to make minimal changes to the motorcycle chassis design.
Rear drum brakes on a motorcycle are either of full floating type or non-floating type. In non-floating type, there is a mechanical link connecting the baking plate of the rear drum brake to the swing arm, whereas in full floating type, the mechanical link is connected to the rigid frame of the motorcycle form the backing plate of the rear drum brake.
Preferred embodiments in accordance with the present invention will now be described with reference to the accompanying drawings.
An embodiment of the present invention is described in the Figure-1 which is depicting the proposed arrangement of the mechanical integrated brake system (1) on a motorcycle having non-floating type rear drum brake. Referring to Figure-1, the mechanical integrated brake system (1) is retrofitted on a mechanical link (2) which is connecting backing plate (4) of the rear drum brake to a swing arm (3) at connection point (10),and when a force is applied to a hand operated lever or to a foot operated brake pedal (8) which is further connected to the mechanical integrated brake system (1) via a rod to the brake foot pedal (9), the mechanical integrated brake system (1)allows actuation of both front service brake cable(5) and rear service brake rod (6).
Another embodiment of the present invention is described in the Figure-2 which is depicting the proposed arrangement of the mechanical integrated brake system (1) on a motorcycle having floating type rear drum brake. Referring to Figure-2, the mechanical integrated brake system (1) is retrofitted on the mechanical link (2) which is connecting the backing plate (4) of the rear drum brake to a rigid frame (7) at connection point (11), and when a force is applied to a hand operated lever or to the foot operated brake pedal (8) which is further connected to the mechanical integrated brake system (1) via the rod to the brake foot pedal (9), the mechanical integrated brake system (1) allows actuation of both front service brake cable (5) and rear service brake rod (6).
The mechanical integrated brake (MIB) system as shown in Figure-1 and Figure-2’ uses the rod to connect to the rear brake (6), the cable to the front brake (5) and the rod to the brake foot pedal arm (9). However, during full suspension travel, self-actuation happens, which affects the overall performance. To overcome this problem, the mechanical link (2) connecting the backing plate (4) of the rear drum brake is connected to the rigid frame (7), and then rear drum is converted to full floating type. With this arrangement, the self-actuation is reduced by 90 percent, i.e. less than 1 mm travel of the rear brake rod (6) as compared to more than 10 mm travel.
The aforesaid arrangement of the mechanical integrated brake system (1) of the present invention requires minimal changes to the motorcycle chassis design and allows retrofitting of the mechanical integrated brake system on any motorcycle with rear drum brake.
Although preferred embodiments of the invention has been illustrated and described, it will at once be apparent to those skilled in the art that the invention includes advantages and features over and beyond the specific illustrated construction. Accordingly it is intended that the scope of the invention be limited solely by the scope of the hereinafter appended claims, and not by the foregoing specification, when interpreted in light of the relevant prior art.

We claim:
1. A method of arrangement of a mechanical integrated brake (MIB) system (1) on a motorcycle having rear drum brake and at least two service brakes, wherein the mechanical integrated brake (MIB) system (1) is installed on a mechanical link (2) connecting a backing plate (4) of the rear drum brake to a swing arm (3) or a rigid frame (7) of the motorcycle and allows actuation of both front service brake (5) and rear service brake (7) on applying force to foot operated brake pedal (8) or to hand operated lever.

2. The method of arrangement of the mechanical integrated brake (MIB) system (1), as claimed in claim 1, wherein the mechanical integrated brake (MIB) system (1) can be installed on a motorcycle having non-floating type rear drum brake.

3. The method of arrangement of the mechanical integrated brake (MIB) system (1), as claimed in claim 1, wherein the mechanical integrated brake (MIB) system (1) can be installed on a motorcycle having full floating type rear drum brake.

4. The method of arrangement of the mechanical integrated brake (MIB) system (1), as claimed in claim 1, wherein the mechanical integrated brake (MIB) system (1) uses a rod to connect to the rear brake service (6), a cable to the front brake service (5) and a rod to the brake foot pedal arm (9).

5. The method of arrangement of the mechanical integrated brake (MIB) system (1), as claimed in claim 1, wherein self-actuation is reduced by 90% with the arrangement of the mechanical integrated brake (MIB) system (1) on the motorcycle having full floating type rear drum brake.

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