TW202208211A - Stem integration kit of anti-lock braking system (ABS) for electric bicycle to directly or indirectly control the increase or decrease of the hydraulic pressure of the electric bicycle braking system, modulate the braking speed of the wheel, and prevent the wheel from locking in emergency braking - Google Patents

Abstract

A stem integration kit of anti-lock braking system (ABS) for electric bicycle comprises a stem, a hydraulic control unit disposed inside the stem, and an electric motor. The tube wall of the stem has a first lock hole and a second lock hole respectively for the oil pipe joint of a front brake master cylinder of an electric bicycle and the oil pipe joint of a front caliper of the electric bicycle to be locked and positioned, so that the oil paths of the front brake master cylinder and the front caliper are communicated with the hydraulic control unit. The hydraulic control unit (HCU) is controlled by the electronic control unit (ECU) of the anti-lock braking system (ABS) to directly or indirectly control the increase or decrease of the hydraulic pressure of the electric bicycle braking system, modulate the braking speed of the wheel, and prevent the wheel from being locked in emergency braking.

Description

Electric bicycle anti-lock braking system (ABS) first integration kit

The present invention relates to a braking system of an electric bicycle, more specifically, to an electric bicycle faucet with a hydraulic control unit (HCU) of an anti-lock braking system (ABS).

In order to meet various riding needs, the speed of electric bicycles has been greatly increased. When the electric bicycles need to be braked urgently during high-speed driving, it is prone to the situation of people and vehicles falling to the ground and serious sideslip. The main reason is that the wheels are locked during emergency braking, resulting in friction between the tire and the ground, while the contact area between the tire and the ground of the electric bicycle is very small, resulting in insufficient braking force, the electric bicycle loses its steering ability, and is in an extremely unstable state.

Although part of the existing electric bicycle braking system adopts hydraulic braking, it still belongs to the method of locking the tires for braking, so the braking effect is poor and danger is likely to occur.

The following technical documents propose solutions to the above problems.

CN209290573U discloses a bicycle seat tube with an integrated ABS control system. The ABS control system is installed and connected to the seat tube through an upper connecting frame and a lower connecting frame, and a lithium battery provides power for it through a power cord. When the signal feedback from the sensor is processed by the ABS control system, the ABS pump in the ABS control system changes the oil pressure at a high frequency, and the oil pipe is output to the caliper through the front and rear oil pipe inlet and outlet interfaces, and the oil pipe is output to the caliper to achieve high-frequency spot braking Anti-lock braking effect.

The present invention provides an electric bicycle anti-lock braking system (Anit-lock Breaking) System (abbreviated as ABS) of the head integrated kit, which is composed of a faucet, a hydraulic control unit (Hydraulic Control Unit, HCU) inside the faucet, and an electric motor coupled with the hydraulic control unit. composition; the coupling includes electrical coupling and oil circuit coupling, the electric motor and the valve body of the hydraulic adjustment unit are opened and closed to control the flow of brake oil; the pipe wall of the faucet has a first lock hole and a second lock The holes are respectively used for the oil pipe joint of a front brake master cylinder of an electric bicycle and the oil pipe joint of a front caliper of the electric bicycle to be locked and positioned, so that the oil circuit of the front brake master cylinder and the front caliper is communicated with the hydraulic adjustment unit. The hydraulic adjustment unit is controlled by the electronic control unit (Electronic Control Unit, ECU) of the anti-lock braking system, and directly or indirectly controls the hydraulic pressure increase or decrease of the electric bicycle braking system, adjusts the braking speed of the wheels, and prevents emergency braking of the wheels. lock up.

In the present invention, the hydraulic adjustment unit is assembled on the faucet, which is the position closest to the front brake master cylinder of the electric bicycle, and the hydraulic control of the hydraulic adjustment unit can quickly respond to the front brake master cylinder and the front caliper, so that the braking speed of the wheel can be increased. The modulation response is fast, and the effect of preventing emergency braking from locking the wheels is specifically improved.

The hydraulic adjustment unit is the execution device of the anti-lock braking system. In the present invention, the hydraulic adjustment unit is assembled on the faucet, so that the faucet becomes a group kit with the executive device of the anti-lock braking system, which is convenient for the installation of the electric bicycle. Brake system, and easy to connect the brake hose of the electric bicycle.

The hydraulic control unit is fully protected in the tap.

10: Faucet

11: The first keyhole

12: Second keyhole

13: The first installation unit

14: Second installation unit

20: Hydraulic Control Unit (HCU)

21: Electric Motor

31: Oil pipe joint of front brake master cylinder

32: Oil pipe joint for front caliper

40: Handlebars

[Fig. 1] is one of the three-dimensional appearance views of the faucet of the present invention.

[Fig. 2] is the second three-dimensional appearance view of the faucet of the present invention.

[Fig. 3] is a schematic cross-sectional view of the faucet of the present invention.

[FIG. 4] is one of the combined external views of the faucet and the handlebar of the present invention.

[Fig. 5] is the second external view of the combination of the faucet and the handlebar of the present invention.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are hereby expressed. Various objects in the embodiments are drawn according to proportions, sizes, deformations or displacements suitable for description, rather than the proportions of actual elements, which will be described first. In the following description, identical and symmetrically arranged elements are denoted by the same reference numerals. Directional terms such as "front, rear, left, right, up, down, inner, outer" are used in the following description, which are indicated according to the view direction and cannot be interpreted as a limitation on this creation. The terms "first" and "second" are used only to describe elements and should not be construed to indicate or imply relative importance or order.

1 to FIG. 3 , an electric bicycle anti-lock braking system (Anit-lock Breaking System, ABS) of the present invention is a front integrated kit, which is composed of a faucet 10 and a hydraulic pressure regulator inside the faucet 10. The hydraulic control unit 20 (Hydraulic Control Unit, HCU for short) and an electric motor 21 coupled with the hydraulic control unit 20 are composed. The coupling includes electrical coupling and oil circuit coupling. The electric motor 21 and the valve body of the hydraulic adjustment unit 20 are opened and closed to control the flow of the brake oil. The hydraulic adjustment unit 20 and the electric motor 21 provide power from the lithium battery of the electric bicycle through a power cord (not shown).

The hydraulic modulation unit 20 is the actuator of the anti-lock braking system, which is a known device. . In the illustration, the appearance of the hydraulic adjustment unit 20 is only for illustration. The present invention is not specifically limited. The pipe wall of the faucet 10 is locked and positioned by a first lock hole 11 and a second lock hole 12 for the oil pipe joint 31 of the front brake master cylinder of the electric bicycle and the oil pipe joint 32 of the front caliper of the electric bicycle, so that the front brake master cylinder is locked and positioned. The oil circuit with the front caliper communicates with the hydraulic adjustment unit 20 and the electric motor 21 .

4 to 5, the front end of the faucet 10 is connected to the handlebar 40 of the electric bicycle through a first installation unit 13, and the rear end of the faucet 10 is connected to the headgear headset of the electric bicycle through the second installation unit 14 (not shown in the figure). ). According to the structure of the handlebar and the headset, the first mounting unit 13 and the second mounting unit 14 can be designed in various structural forms, which are not limited in the present invention.

The anti-lock braking system also includes an electronic control unit (Electronic Control Unit, ECU for short), which is a known device, mainly composed of a microprocessor, a solenoid valve drive circuit, a motor drive circuit, a diagnostic circuit and other peripheral circuits. The microprocessor implements the anti-lock control strategy and controls the hydraulic modulation unit. According to the prior art, the electronic control unit can be installed on any part of the frame of the electric bicycle, and it is mainly coordinated with the wheel speed sensor disposed on the wheel to detect the rotation speed of the wheel, and the wheel speed sensor detects the speed of the wheel with the braking wheel. It is proportional to the AC voltage signal, and the voltage signal is sent to the electronic control unit. The microprocessor of the electronic control unit calculates the wheel speed, slip rate and acceleration and deceleration of the wheel, and analyzes and compares these speed signals. , issue the control command of the braking pressure to the hydraulic modulation unit, so that the hydraulic modulation unit directly or indirectly controls the hydraulic pressure increase or decrease of the braking system, adjusts the braking speed of the wheels, and prevents the emergency braking of the wheels from locking.

10: Faucet

11: The first keyhole

12: Second keyhole

13: The first installation unit

14: Second installation unit

20: Hydraulic Control Unit (HCU)

Claims (1)

An electric bicycle anti-lock braking system (ABS) front integrated kit, which is composed of a faucet, a hydraulic adjustment unit arranged inside the faucet, and an electric motor coupled with the hydraulic adjustment unit; The pipe wall of the faucet has a first lock hole and a second lock hole for the oil pipe joint of a front brake master cylinder of an electric bicycle and the oil pipe joint of a front caliper of the electric bicycle to be locked and positioned, so that the front brake master cylinder can be locked and positioned. The oil circuit of the pump and the front caliper is communicated with the hydraulic adjustment unit and the electric motor.

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