DESC:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003
COMPLETE SPECIFICATION
[See Section 10 and Rule 13]
TITLE:

“AN INTEGRATED BRAKING SYSTEM”

APPLICANT:

PADMINI VNA MECHATRONICS LIMITED
A company incorporated under the Indian Companies Act, 1956
having address at
Plot No. 100-101, Sector 35, Phase VII, Udyog Vihar,
Gurgaon-122001, Haryana, India

PREAMBLE TO THE DESCRIPTION:
The following specification particularly describes the invention and the manner in which it is to be performed:

FIELD OF THE INVENTION
The present invention relates to the field of braking systems. More particularly, the present invention relates to an integrated braking system for a two-wheeler vehicle that improves an overall safety and comfort.

BACKGROUND OF THE INVENTION
A vehicle is a machine that is intended to transport people or goods from one place to another. Several types of vehicles are available in the market, and among the various types, a two-wheeler vehicle such as motorcycle, electric cycle is widely famous for their applications and efficiency. The components of the two wheeler vehicle ensure safety, stability, and performance.
Further, a braking assembly in the two wheeler vehicle is an important aspect for controlling speed and for ensuring a safe stop. In general, the braking assembly in the vehicle is configured to manage the forces which are generated during deceleration and further the braking assembly helps to maintain stability in the vehicle.
Conventionally, the braking assembly includes individual brake levers which are mounted on a handlebar. Furthermore, a left hand lever controls a rear wheel brake and likewise the right hand lever manages the front wheel brake. However, the conventional braking assembly has several issue related to safety and stability. A rider of the vehicle apply the rear wheel brake alone due to a habit or as per the convenience, however this act lead to inefficiencies in the braking performance of the vehicle. When only the rear brake is used, a weight of the vehicle shifts forward due to inertia and as a result the vehicle requires a significantly longer distance to stop, which further compromises the safety.
Also, when the rider only applies the front wheel brake, the front wheel brake exerts a strong decelerate force, but due to reduced weight on the front wheel, the vehicle experience a sudden jolt. The jolt negatively impacts the ride quality and destabilize the vehicle. Ultimately, the breaking mechanism of the vehicle making it more hazardous.
CN111867926A discloses a braking system for a motor vehicle. The integrated braking system includes a first brake lever rotatable about a first pivot point and a secondary actuation lever rotatable about a second pivot point. A single resilient member is operatively coupled to the first brake lever and the secondary actuation lever. The resilient member is configured to provide a return force upon actuation of either or both of the first brake lever and the secondary actuation lever. Moreover, the braking system is mounted to the handlebar without interfering with the headlamp assembly or other auxiliary components. However, due to large number of child components, the braking system is not efficient and robust enough.
CN109070969B discloses a braking system, and in particular to a synchronous braking system for a two-wheeled vehicle. The synchronous braking system includes a front wheel brake assembly configured to apply a braking force to a front wheel of the two-wheeled vehicle. The front wheel brake assembly includes a hydraulic brake caliper for hydraulically generating braking of the front wheels. A rear wheel brake assembly capable of applying a braking force to a rear wheel of a two-wheeled vehicle is provided. However, due to large number of child components, the braking system is not efficient and robust enough.
Therefore, there is a need of an improved braking system for addressing the above mentioned challenges and for improving an overall safety and comfort.
OBJECT OF THE INVENTION
The main object of the present invention is to provide an integrated braking system for a two-wheeler vehicle.
Another object of the present invention is to provide an integrated braking system for a two-wheeler vehicle that improves an overall safety and comfort.
Yet another object of the present invention is to provide an integrated braking system for a two-wheeler vehicle that includes a smaller number of child parts compared to the solutions currently available in the market.
Still another object of the present invention is to provide an integrated braking system for a two-wheeler vehicle that is more compact and easily packaged in the space available in a vehicle.
SUMMARY OF THE INVENTION
The present invention relates to an integrated braking system for a two-wheeler vehicle that is compact and provides overall safety and comfort.
In an embodiment, the present invention provides an integrated braking system comprising a plurality of assemblies, a brake panel assembly and a front brake caliper wherein the plurality of assemblies include a left hand side lever assembly and a right hand side master cylinder assembly. The left hand side lever assembly is mounted on a handlebar of a vehicle and includes an equalizer that is configured to receive an input force from a primary lever and distribute the input force between a first brake cable and a second brake cable. The brake panel assembly is connected to a rear wheel of the vehicle and the brake panel assembly is being actuated via the first brake cable to apply a braking force to the rear wheel. The right hand side master cylinder assembly is mounted on the handlebar and the right hand side master cylinder assembly is configured to convert the input force received from secondary lever into hydraulic pressure. The front brake caliper is connected to the right hand side master cylinder assembly via a brake hose and the hydraulic pressure actuates the front brake caliper to apply braking to a brake disc, thereby applying braking force to the front wheel.
The above objects and advantages of the present invention will become apparent from the hereinafter set forth brief description of the drawings, detailed description of the invention, and claims appended herewith.

BRIEF DESCRIPTION OF THE DRAWINGS
An understanding of the integrated braking system of the present invention may be obtained by reference to the following drawings:
Figure 1 is a schematic view of a frame structure of the integrated braking system according to an embodiment of the present invention.
Figure 2(a) is an isometric view of a right hand side master cylinder assembly of the integrated braking system according to an embodiment of the present invention.
Figure 2(b) is another isometric view of a right hand side master cylinder of the integrated braking system according to an embodiment of the present invention.
Figure 3 is an exploded view of the right hand side hydraulic master cylinder of the integrated braking system according to an embodiment of the present invention.
Figure 4(a), Figure 4(b) and Figure 4(c) are isometric views of the conventional braking system according to an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The present invention will now be described hereinafter with reference to the accompanying drawings in which a preferred embodiment of the invention is shown. This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough, and will fully convey the scope of the invention to those skilled in the art.
Many aspects of the invention can be better understood with references made to the drawings below. The components in the drawings are not necessarily drawn to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, like reference numerals designate corresponding parts through the several views in the drawings. Before explaining at least one embodiment of the invention, it is to be understood that the embodiments of the invention are not limited in their application to the details of construction and to the arrangement of the components set forth in the following description or illustrated in the drawings. The embodiments of the invention are capable of being practiced and carried out in various ways. In addition, the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
The present invention provides an integrated braking system for a two-wheeler vehicle for improving an overall safety and comfort, maintains security, stability and efficiency, includes a smaller number of child parts compared to the solutions currently available in the market and is more compact and easily packaged in the space available in a vehicle.
In an embodiment, the present invention provides an integrated braking system comprising a plurality of assemblies, a brake panel assembly and a front brake caliper wherein the plurality of assemblies include a left hand side lever assembly and a right hand side master cylinder assembly. The left hand side lever assembly is mounted on a handlebar of a vehicle and includes an equalizer that is configured to receive an input force from a primary lever and distribute the input force between a first brake cable and a second brake cable. The brake panel assembly is connected to a rear wheel of the vehicle and the brake panel assembly is being actuated via the first brake cable to apply a mechanical braking force to the rear wheel. The right hand side master cylinder assembly is mounted on the handlebar and the right hand side master cylinder assembly is configured to convert the input force received from secondary lever into hydraulic pressure. The front brake caliper is connected to the right hand side master cylinder assembly via a brake hose and the hydraulic pressure actuates the front brake caliper to apply braking to a brake disc, thereby applying braking force to the front wheel.
Figure 1 is a schematic view of a frame structure of the integrated braking system according to an embodiment of the present invention. The integrated braking system (1) includes a left hand side lever assembly (400) and a right hand side master cylinder assembly (600). The left hand side lever assembly (400) and the right hand side master cylinder assembly (600) are mounted on a handlebar (900) of a vehicle such as two wheeler vehicle. In addition to this, isometric views of a right hand side master cylinder assembly (600) mounted on the handlebar (900) are depicted in Figure 2(a) and Figure 2(b).
Further, the left hand side lever assembly (400) includes an equalizer, which transmits an applied brake force on a primary lever (607) (depicted in Figure 3) to a first brake cable (700). The first brake cable (700) pulls a cam lever which is mounted on a brake panel assembly (800) to actuate a rear brake. The first brake cable (700) is connected to brake panel assembly (800) which applies brakes to the rear wheel of the vehicle.
Further, the left hand side lever assembly (400) also transmits the brake force to right hand side master cylinder assembly (600) through a second brake cable (500). Furthermore, the right hand side master cylinder assembly (600) involves a dual input lever mechanism to actuate a front brake caliper (100) through a brake hose (300). The front brake caliper (100) exerts a clamping force on a brake disc (200) to generate a brake torque which decelerates the vehicle.
Figure 3 is an exploded view of the right hand side master cylinder assembly (600) of the integrated braking system (1) according to an embodiment of the present invention. The right hand side master cylinder assembly (600) includes the primary lever (607). The primary lever (607) is mounted on a main bore with help of a pivot screw (601) and a nut (609). Further, a secondary lever (608) is mounted on the main bore in combination with the primary lever (607). Additionally, a sheet metal spring (606) is used to retract the hand lever (607) when an input load is released.
Also, a brake cable (610) is connected to the secondary lever (608). A piston (603) is also assembled in the main bore of master body (602) which converts a mechanical force from the primary lever (607) and the secondary lever (608) into a hydraulic pressure.
Additionally, when the rider applies input force on left hand side lever assembly (400), the force is proportioned into a desired ratio with help of an equalizer and transmits to the brake cables (i.e. first brake cable (700) and second brake cable (500)). Further, the first brake cable (700) is connected to a brake panel assembly (800) through which brake is applied to the rear wheel of the vehicle. Furthermore, the second brake cable (500) is connected to the secondary lever (608) of the master cylinder assembly (600). The second brake cable (500) applies a pull load on secondary lever (608) which is a fulcrum to the main bore.
Due to rotation of the secondary lever (608), the other end of it applies push force on the piston (603) which converts the load into the hydraulic pressure. The hydraulic pressure generated inside the main bore is transmitted to the front brake caliper (100) through the brake hose (300). The front brake caliper (100) then converts the hydraulic pressure into mechanical force and applies clamping force on the brake disc (200), thereby applying braking force to the front wheel and thus generates brake torque. The brake disc (200) is mounted on a front wheel of the vehicle.
Due to the above phenomenon brake is applied in both front wheel and rear wheel simultaneously. This increases the deceleration of the vehicle and gives better braking performance. Also, provides confidence to the rider while applying brakes as the rider needs to apply force on only a single lever and brake is applied to both the wheels at the same instant.
On the other hand, when the rider applies force on the primary lever (607), the force is transmitted to the piston (603) which converts the load into hydraulic pressure. The hydraulic pressure generated inside the main bore is transmitted to a front brake caliper (100) through the brake hose (300). The front brake caliper (100) then converts the hydraulic pressure into mechanical force and applies clamping force on the brake disc (200) to generate a brake torque.
The presence of the dual levers (i.e. primary lever (607) and secondary lever (608)) makes it possible to apply brakes to front wheel as well as rear wheel simultaneously when the left hand side lever assembly (400) is pressed. Thus, with application of only the left hand side lever assembly (400), brakes are applied in both front wheel and rear wheel simultaneously.
In the event, when the secondary lever (608) is actuated through the second brake cable (500), a sheet metal spring (606) is provided to keep the primary lever (607) retracted. In absence of the sheet metal spring (606), the primary lever (607) becomes free to rotate about its fulcrum which give improper feel to the rider. A threaded oil level window (605) is provided to let the fluid level visible from outside. The threaded oil level window (605) is assembled in the reservoir in combination with a sealing O-ring (604) to prevent oil leakage during filling of brake fluid in the reservoir. A threaded connection is chosen to make the interface airtight and leak proof.
EXAMPLE 1
Features analysis of the present invention
The present invention an integrated braking system (1) for a two-wheeler vehicle, for improving an overall safety and comfort. The present invention includes a smaller number of child parts compared to the solutions currently available in the market. Due to a smaller number of child parts, the assembly becomes less complicated, less expensive, and more robust.
Referring to Figure 4(a), Figure 4(b) and Figure 4(c), isometric views of existing braking system (1000) is depicted. The present invention eliminates the parts like a pin (p2), a press fit pin (1001) and a press fit pin (1002) as depicted in Figure 4(a), Figure 4(b) and Figure 4(c). Further, due to a smaller number of connections in the present invention, the operational efficiency of the assembly is higher. The integrated braking system (1) is more compact and easily packaged in the space available in the vehicle such as two-wheeler vehicle.
Therefore, the present invention provides an integrated braking system for a two-wheeler vehicle for improving an overall safety and comfort, maintains security, stability and efficiency, includes a smaller number of child parts compared to the solutions currently available in the market and is more compact and easily packaged in the space available in a vehicle.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principle of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.
,CLAIMS:CLAIMS
We claim:
1. An integrated braking system (1) comprising:
a plurality of assemblies;
a brake panel assembly (800); and
a front brake caliper (100);
wherein,
said plurality of assemblies include a left hand side lever assembly (400) and a right hand side master cylinder assembly (600);
said left hand side lever assembly (400) is mounted on a handlebar (900) of a vehicle and includes an equalizer that is configured to receive an input force from a primary lever (607) and distribute the input force between a first brake cable (700) and a second brake cable (500);
said brake panel assembly (800) is connected to a rear wheel of the vehicle and the brake panel assembly (800) is being actuated via the first brake cable (700) to apply a braking force to the rear wheel;
said right hand side master cylinder assembly (600) is mounted on the handlebar and the right hand side master cylinder assembly (600) is configured to convert the input force received from secondary lever (608) into hydraulic pressure; and
said front brake caliper (100) is connected to the right hand side master cylinder assembly (600) via a brake hose (300) and the hydraulic pressure actuates the front brake caliper (100) to apply braking to a brake disc (200), thereby applying a braking force to the front wheel.

2. The integrated braking system (1) as claimed in claim 1, wherein said right hand side master cylinder assembly (600) includes:
i) a master body (602) having a main bore and a fluid reservoir;
ii) a piston (603) slidably disposed in the main bore for generating the hydraulic pressure;
iii) a primary lever (607) pivotally mounted on the master body (602) for direct actuation of the piston (603);
iv) a secondary lever (608) pivotally mounted on the master body (602) and connected to the second brake cable in such a manner that a pulling force on the second brake causes the secondary lever (608) to apply a push force on the piston (603);
v) a sheet metal spring (606) configured to bias the primary lever (607) to a retracted position in case the piston (603) is actuated by the secondary lever (608); and
vi) a threaded oil level window (605) assembled in the reservoir along with a sealing O-ring (604) to provide a visible indication of brake fluid level while preventing fuel leakage.
3. The integrated braking system (1) as claimed in claim 2, wherein said secondary (608) applies the push force on the piston (603) which converts a load into the hydraulic pressure.
4. The integrated braking system (1) as claimed in claim 1, wherein said front brake caliper (100) exerts a clamping force on the brake disc (200) for generating a brake torque that decelerates the vehicle.
5. The integrated braking system (1) as claimed in claim 1, wherein said primary lever (607) and secondary hand lever (608) facilitates in application of brakes to the front wheel as well as the rear wheel simultaneously when the left hand side lever assembly (400) is pressed.
6. The integrated braking system (1) as claimed in claim 1, wherein said first brake cable (700) pulls a cam lever mounted on the brake panel assembly (800) to actuate a rear brake.

Dated 24th day of July, 2025