A brake pedal mechanism that increases brake pedal ratio

Abstract

The invention relates to a brake pedal mechanism (10) which provides the required pedal ratio with a single pedal in mini-vehicles which do not have sufficient mounting and movement volume for the brake pedal (11).

Description

[0001] A BRAKE PEDAL MECHANISM THAT INCREASES BRAKE PEDAL RATIO

[0002] Technical Field

[0003] The invention relates to increasing the brake pedal ratio, which enables the brake force to be increased.

[0004] In particular, the invention relates to a brake pedal mechanism which provides the required pedal ratio with a single pedal in mini vehicles which do not have sufficient mounting and movement volume for a brake pedal.

[0005] State of the Art

[0006] Brake pedal ratio is an important parameter that determines the effectiveness of a vehicle's braking system. This ratio expresses the force transfer between the brake pedal and the brake master cylinder. It is simply the ratio of the force applied to the brake pedal to the force transmitted to the brake system.

[0007] Nowadays due to current vehicles have large volumes, high-rate brake pedals can be used by utilising this volume. Especially in mini vehicles, the required pedal ratio cannot be achieved with a single pedal due to the lack of sufficient mounting and movement volume. If the brake pedal with the same ratio as the brake pedal is to be used in mini-vehicles with the requirement of providing the movement stroke of the brake pedal, there is not enough volume. In the case of using low ratio brake pedals suitable for the volume of mini-vehicles, very high levels of force must be applied to the brake pedal for effective braking performance, and this case is not ergonomic.

[0008] The aforementioned drawback of the current technique necessitates a new configuration that allows increasing the low brake pedal force in a small volume, i.e. increasing the brake pedal ratio.

[0009] As a result of the research on the subject, document number EP1946984B1 was found. The relevant document relates to a braking system for a motor vehicle. The present technique aims to provide a brake pedal mechanism with a shortened brake pedal stroke. However, it does not include a system to increase the brake pedal ratio with low brake pedal force for mini-vehicles with small internal volume. Consequently, due to the above-mentioned drawbacks and the inadequacy of the existing solutions on the subject, a development in the relevant technical field has become necessary.

[0010] Purpose of the Invention

[0011] The invention is inspired by existing situations and aims to solve the above-mentioned problems.

[0012] The main purpose of the invention is provide an increase the brake pedal ratio by adding a rotary arm mechanism between the brake pedal and the brake booster.

[0013] A further object of the invention is to increase the general ratio of the brake pedal in a narrow volume. In this way, it provides more effective braking performance with lower brake pedal force and a more ergonomic use.

[0014] In order to fulfill the aforementioned objects, the invention relates to a brake pedal mechanism that provides the required pedal ratio with a single brake pedal in minivehicles which do not have sufficient mounting and movement volume, and that comprising the following,

[0015] • A brake pedal, which is the first actuating part of the brake system and operates the brake system by the force exerted on it by the driver,

[0016] • A brake booster that increases the force from the brake pedal by vacuum effect and transmits it to the brake center

[0017] • A brake master cylinder that sends hydraulics to the system with a push movement from the brake booster and

[0018] • A brake hydraulic tank to store the hydraulic oil in the system

[0019] characterized in that it includes the following • A first pusher arm configured at the end of the brake pedal to increase the brake pedal ratio,

[0020] • A second pusher arm that pushes the pin of the brake booster with the motion from the first pusher arm and

[0021] • An arm rotation element mounted in the center of rotation between the first pusher arm and the second pusher arm, which transfers the force from the brake to the brake booster.

[0022] The structural and characteristic features and all advantages of the invention will be more clearly understood by means of the figures given below and the detailed description written with references to these figures, and therefore, the evaluation should be made by considering these figures and detailed description.

[0023] Figures to Help Understand the Invention

[0024] Figure 1, General perspective view of the brake pedal mechanism.

[0025] Figure 2, Side view of the brake pedal mechanism.

[0026] Figure 3, Side section view of the brake pedal mechanism.

[0027] Figure 4, Detail side view of the brake pedal mechanism.

[0028] Figure 5, Representative view of the brake pedal mechanism in the vehicle.

[0029] Description of Part References

[0030] 10. Brake pedal mechanism

[0031] 11. Brake pedal

[0032] 12. First pusher arm

[0033] 13. Second pusher arm

[0034] 14. Arm rotation element

[0035] 15. Brake booster 16. Brake master cylinder

[0036] 17. Brake hydraulic tank

[0037] Detailed Description of the Invention

[0038] In this detailed description, the preferred embodiments of the inventive brake pedal mechanism (10) are described only for a better understanding of the subject matter.

[0039] The inventive brake pedal mechanism, a general view of which is given in Figure 1, brake pedal mechanism comprises, a rotary arm mechanism which have a brake pedal (11), a first pusher arm (12), a second pusher arm (13) and an arm rotation element (14), and comprises a brake booster (15), a brake master cylinder (16) and a brake hydraulic cylinder.

[0040] Increasing the brake pedal ratio provides the brakes work harder. This means more effective braking. The right ratio optimizes the response of the vehicle's braking system, improving driving safety. In order to increase the brake pedal ratio, especially in vehicles with a small internal volume, the force applied to the brake pedal needs to be increased. The inventive mechanism is configured to achieve a high brake pedal ratio with low brake pedal force to provide more effective performance in mini vehicles with do not have sufficient internal volume. The inventive brake pedal mechanism includes a rotary arm mechanism that increases the general ratio of the brake pedal in a narrow volume. The first pusher arm (12) in the said rotary arm mechanism is configured at the end of the brake pedal (11) to increase the brake pedal ratio. The second pusher arm (13) pushes the pin of the brake booster (15) with the movement it receives from the first pusher arm (12) and helps to provide the braking function. There is an arm rotation element (14), which acts as the rotation center between the first pusher arm and the second pusher arm, which is mounted in the rotation center between the first pusher arm (12) and the second pusher arm (13), and which transfers the force from the brake to the brake booster (15).

[0041] With arm rotation mechanism in the subject of the invention, it prevents the high force application to the brake pedal, especially in mini vehicles, and achieves a higher brake pedal ratio with less force, thus providing both effective performance and an ergonomic driving for the driver.

[0042] The working principle of the inventive brake pedal mechanism is as follows: When the driver presses the brake pedal (11), the first pusher arm (12) is activated. With the movement of the first pusher arm (12), the second pusher arm (13) connected to the arm rotation element (14) is rotated. The second pusher arm (13) is connected from its upper end to the pin of the brake booster (15) and when it moves, this pin moves inside and increases the brake force by vacuum effect. With this force, the brake master cylinder (16) operates and transfers the hydraulics received from the brake hydraulic tank (17) to the system and provides to transfer the brake force to the wheels.

Claims

CLAIMS1. A brake pedal mechanism (10) provides the required pedal ratio with a single brake pedal (11) for mini-vehicles which do not have sufficient mounting and movement volume and comprising the following,• A brake pedal (11), which is the first actuating part of the brake system and operates the brake system by the force exerted on it by the driver,• A brake booster (15) that increases the force from the brake pedal (11 ) by vacuum effect and transmits it to the brake center,• A brake master cylinder (16) that sends hydraulics to the system with push movement from the brake booster (15) and• A brake hydraulic tank (17) that provides to store the hydraulic oil in the systemcharacterized by comprising; the following;• A first pusher arm (12) configured at the end of the brake pedal (11) to increase the brake pedal ratio,• A second pusher arm (13) that pushes the pin of the brake booster (15) with the motion received from the first pusher arm (12) and• An arm rotation element (14) mounted in the center of rotation between the first pusher arm (12) and the second pusher arm (13), which transfers the force from the brake to the brake booster (15).

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