DESC:FIELD OF INVENTION
The present invention relates with the field of braking system for automotive two wheeled vehicles, and more particularly it relates to a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles.
BACKGROUND OF THE INVENTION
[0001] A brake is a mechanical device or apparatus in automobile vehicles, which inhibits motion by absorbing energy from the moving wheels of vehicle to decelerate the vehicle’s momentum for stopping of moving vehicle. A braking system plays a crucial role in improving efficiency of the vehicles and providing auto safety in terms of prevention of road accidents, particularly for high-speed vehicles.
[0002] Since the earliest automobiles, a gradual development has been carried out to provide an improved braking systems and methods for automotive vehicles. Since ancient time, various kinds of brakes i.e. wooden block brakes, mechanical brakes, expanding internal shoe brakes, mechanical brakes, hydraulic brakes, disc brakes, anti-lock brakes etc. have been gradually developed to meet the requirements of braking mechanism of vehicles in automobile industry.
[0003] In last few decades, a gradual evolution in automobile industry is being carrying out to provide an efficient braking system than that of the existing one. A pedal-brake type braking system plays a key role in two wheeled vehicles i.e. scooters, motorcycles etc.
[0004] A conventional mechanical pedal brake is defined to mean a braking system in which, when the brake pedal is pressed, the brake cable is being pulled which causes the brake shoes to expand outwards and rub against the drum. Friction between the brake linings and the drum causes the drum to stop rotating; and thereby causing stoppage of the wheels. When the brake pedal is released, the retracting springs bring the brake shoes back to their original position. Thus, the mechanical pedal brake imparts a braking force by causing friction between the brake shoe and drum.
[0005] In two wheeled vehicles, such as scooters and motorcycles etc., conventionally there are two brakes being provided, one is a hand brake which applies a brake to the front wheel of the vehicle and another is a pedal brake which applies a brake to the rear wheel of the vehicles a predefined ratio. However, such conventional pedal brake systems cause skidding of the vehicles due to undesirable locking of wheels.
[0006] Hence, said conventional mechanical pedal brake systems have been switched over by a combined braking system (CBS) to surpass the conventional braking effect. The term “combined braking system” in two-wheeled vehicles is understood to mean a braking system in which, when “a handle lever or a brake pedal” is operated, the front brake and the rear brake are applied simultaneously. Accordingly, by operating a single actuating device, both of the brakes, i.e. front brake and rear brake are applied at the same time.
[0007] Generally, a motorcycle having combined brake device is known in the art which can apply braking force to a front wheel along with the application of braking force to a rear wheel, when the rear brake is manipulated. However, said combined brake system could not be successful to provide an effective brake load to both of the wheels i.e. front wheel and rear wheel for achieving the minimum stopping distance by using the full road adhesion.
[0008] Although, the conventional pedal brake systems are proved to be an advantageous, there is still room to improve the functionality and performance of the braking system for inducing an effective brake load to both of the wheels, i.e. front brake wheel and rear brake wheel simultaneously, by using a single brake-actuating medium i.e. a brake pedal. Hence, a need yet exists to switch the pedal brake system having an enhanced functionality and performance.
[0009] Therefore, it is desperately needed to develop a combined braking system for an effectual brake load distribution which overcomes the aforesaid drawbacks and limitations of the prior art combined braking systems.

OBJECTS OF THE INVENTION
[00010] The main object of the present invention is to provide combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles.
[00011] Yet another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which reduces frictional force required for smooth braking of wheels due to less number of moving elements.
[00012] Another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which is having increased life span and cost effective.
[00013] Yet another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which improves performance and functionality of the braking system.
[00014] Yet another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which is simple in construction and design.
[00015] Yet another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which enhances safety of the vehicle as well as rider.
[00016] Yet another object of the present invention is to provide a combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles which overcomes the drawbacks and shortcomings of prior art braking systems.
SUMMARY OF THE INVENTION
[00017] A combined braking system (1) for pedal brake with improved delay mechanism for two wheeled vehicles includes a brake pedal (2) having a first linkage (4) and a second linkage (6), a rear brake mechanism (3) and a front brake mechanism (5). The second linkage having at least one slit (10) that is configured to provide improved delay in the braking of front wheel with respect to braking of second wheel on the pressing of the pedal (2). The rear brake mechanism (3) includes a rear transmission link holder (8) that is pivotably hinged through a first hinge point (9) at a second end (4b) of the first linkage (4) and a rear brake transmission link (15) that is mechanically connected to the rear transmission link holder (8) to actuate a rear brake. The brake mechanism (5) further includes a front cable connector (11) having a second hinge point (12) that is configured to be guided through the slit (10) of the second linkage (6) and a front brake cable (13) that is mechanically connected to the front cable connector (11) to actuate a front brake. The slit (10) that is configured to provide a guide-path for the second hinge point (12) of the front cable connector (11) on the pressing of the pedal (2). The brake pedal (2) is pivotably hinged through a pivot pin (14) coaxially mounted between the first linkage (4) and the second linkage (6).
BRIEF DESCRIPTION OF THE DRAWINGS
[00018] Various other objects, features and many of the attendant advantages of the present invention will be understood by reference to the following detailed description of the preferred embodiment of the present invention when considered in connection with the accompanying drawings, in which:
[00019] Fig. 1 depicts a front perspective view of combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles according to a present invention.
[00020] Fig. 2 depicts a front view of combined braking system for pedal brake with improved delay mechanism for two wheeled vehicles according to the present invention.
[00021] It should be noted that the figures are not drawn to scale and that elements of similar structures or functions are generally represented by like reference numerals for illustrative purposes throughout the figures. It also should be noted that the figures are only intended to facilitate the description of the preferred embodiments. The figures do not illustrate every aspect of the described embodiments and do not limit the scope of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
[00022] The nature of the invention and the manner in which it works is clearly described in the complete specification. The invention has various embodiments and they are clearly described in the following pages of the complete specification. Before explaining the present invention, it is to be understood that the phraseology and terminology employed herein is for the purpose of description and not of limitation.
[00023] Before explaining the present invention, it is to be understood that the term “combined braking system” is known in the art and refers to a braking system which manipulates a front brake mechanism and a rear brake mechanism simultaneously by using a single brake actuating means, i.e. a brake pedal or lever. Further, the term “front brake mechanism” refers to a front brake-linkages for actuating the front brake; and the term “rear brake mechanism” refers to a rear brake-linkages for actuating the rear brake.
[00024] The term “delay mechanism”, hereinafter described, being used for delay braking of the front wheel, which enables an initial actuating of the rear brake mechanism and then after it manipulates the front brake mechanism to eliminate skidding of wheels of the vehicles.
[00025] Now referring to Fig.1, a front perspective view of combined braking system (1) for pedal brake with improved delay mechanism for two wheeled vehicles according to the present invention is shown. The combined braking system (1) includes a brake pedal (2) having a first linkage (4) and a second linkage (6); a rear brake mechanism (3); and a front brake mechanism (5).
[00026] The Fig. 2 shows a front view of combined braking system (1) for pedal brake with improved delay mechanism for two wheeled vehicles according to the present invention. Referring to Fig. 1 & Fig. 2 collectively, the first linkage (4) having a first end (4a) thereof is rigidly fixed to the brake pedal (2) in vertical manner and the second linkage (6) having a proximal end (6a) thereof is rigidly fixed to the brake pedal (2) in an inclined manner. Further, the first linkage (4) of the brake pedal (2) is mechanically and operably connected to the rear brake mechanism (3), whereas the second linkage (6) of the brake pedal (2) is mechanically and operably connected to the front brake mechanism (5).
[00027] The said first linkage (4) and the second linkage (6) includes coaxial pivot holes at the first end (4a) and the proximal end (6a) respectively thereof to coaxially receive and mount a pivot pin (14). The brake pedal (2) is pivotably hinged through the pivot pin (14) coaxially mounted between the first linkage (4) and the second linkage (6).
[00028] The rear brake mechanism (3) includes a rear transmission link holder (8) that is pivotably hinged through a first hinge point (9) at a second end (4b) of the first linkage (4) and a rear brake transmission link (15) that is mechanically connected to a rear transmission link holder (8) to actuate a rear brake (not shown in figure). The rear brake transmission link (15) may be rod or cable or any other transmission means.
[00029] The front brake mechanism (5) further includes a front cable connector (11) having a second hinge point (12) being configured to be guided through the slit (10) of the second linkage (6) and a front brake cable (13) that is mechanically connected to the front cable connector (11) to actuate a front brake (not shown in figure).
[00030] Further continuous referring to Figs.1-2, the second linkage (6) includes a slit (10) for delay mechanism, configured to enable delay in braking of the front wheel with respect to the second wheel. The slit (10) that is configured to provide a guide-path for the second hinge point (12) of the front cable connector (11) which enables an actuation of the rear brake mechanism (3) and thereafter the front brake mechanism (5) is being actuated after termination of the guide-path of the second hinge point (12) along the slit (10).
[00031] In operational characteristics of the present invention, pressing of the brake pedal (2) causes the first linkage (4) and the second linkage (6) to be pulled for pulling of the rear brake transmission link (15) through the rear transmission link holder (8) to apply brake load to the rear wheel until the second hinge point (12) being terminated into the slit (10). Now when the second hinge point (12) is terminated along the slit (10), the front brake mechanism (5) is to be actuated that causes the front brake cable (13) to be pulled to apply brake load to the front wheel.
[00032] The combined braking system of the present invention is cost effective, reduces frictional force to provide increased life span and smooth braking of both of the wheels i.e. front wheel and rear wheel. Due to less number of moving elements, the combined braking system of the present invention is simple in construction, this assembly improves the performance and functionality of the braking system and enhances safety of the rider.
[00033] The present invention has been described with reference to the specific embodiment, which is merely illustrative and not intended to limit the scope of the present invention as defined in the provisional specification.
[00034] List of reference numerals:
1. A combined braking system (1)
2. A brake pedal (2)
3. A rear brake mechanism (3)
4. A first linkage (4)
5. A first end (4a)
6. A second end (4b)
7. A front brake mechanism (5)
8. A second linkage (6)
9. A proximal end (6a)
10. A casing (7)
11. A rear transmission link holder (8)
12. A first hinge point (9)
13. A slit (10)
14. A front cable connector (11)
15. A second hinge point (12)
16. A front brake cable (13)
17. A pivot pin (14)
18. A rear brake transmission link (15)
,CLAIMS:We Claim:
1. A combined braking system (1) for pedal brake with improved delay mechanism for two wheeled vehicles comprising:
a brake pedal (2) having a first linkage (4) and a second linkage (6);
a rear brake mechanism (3); and
a front brake mechanism (5).
2. The combined braking system (1) as claimed in claim 1, wherein the second linkage having at least one slit (10) that is configured to provide improved delay in the braking of front wheel with respect to braking of second wheel on the pressing of the brake pedal (2).
3. The combined braking system (1) as claimed in claim 1, wherein the rear brake mechanism (3) includes a rear transmission link holder (8) that is pivotably hinged through a first hinge point (9) at a second end (4b) of the first linkage (4) and a rear brake transmission link (15) that is mechanically connected to the rear transmission link holder (8) to actuate a rear brake.
4. The combined braking system (1) as claimed in claim 1, wherein the front brake mechanism (5) further includes a front cable connector (11) having a second hinge point (12) that is configured to be guided through the slit (10) of the second linkage (6) and a front brake cable (13) that is mechanically connected to the front cable connector (11) to actuate a front brake.
5. The combined braking system (1) as claimed in claim 1, wherein the slit (10) that is configured to provide a guide-path for the second hinge point (12) of the front cable connector (11) on the pressing of the brake pedal (2).
6. The combined braking system (1) as claimed in claim 1, wherein the brake pedal (2) is pivotably hinged through a pivot pin (14) coaxially mounted between the first linkage (4) and the second linkage (6).