WO2016070460A1

WO2016070460A1 - Bicycle oil pressure brake device

Info

Publication number: WO2016070460A1
Application number: PCT/CN2014/091299
Authority: WO
Inventors: 张瑞龙
Original assignee: 张瑞龙
Priority date: 2014-11-03
Filing date: 2014-11-17
Publication date: 2016-05-12
Also published as: CN105620639A

Abstract

A bicycle (B) oil pressure brake device (100), the device being operated via a brake handlebar (H); the oil pressure brake device (100) comprises an oil supply mechanism (1), an oil pressure cylinder mechanism (2), an oil storage compartment (3) and a brake mechanism (4). When the brake handlebar (H) is pressed, brake oil flows uni-directionally from the oil supply mechanism (1) to an oil chamber (22) of the oil pressure cylinder mechanism (2), such that the pressure of the oil chamber (22) is raised so as to push a piston rod (21) of the oil pressure cylinder mechanism (2) to an outward pushing position, and the piston rod (21) drives the brake mechanism (4) connected thereto to move to a brake position for braking; when the brake handlebar (H) is released, the brake oil flows uni-directionally from the oil chamber (22) of the oil pressure cylinder mechanism (2) to the oil storage compartment (3), such that the piston rod (21) returns from the outward pushing position to an inward clamping position, and the brake oil flows uni-directionally from the oil storage compartment (3) through a backflow check valve (311) back to the oil supply mechanism (1).

Description

Hydraulic brake device for bicycle

Technical field

The present invention relates to a bicycle, and more particularly to a hydraulic brake device associated with a bicycle.

Background technique

With the global warming and air pollution issues, bicycles powered by human foot pedals have gradually replaced cars, locomotives, and electric vehicles, and have promoted various improvements in bicycles. Since the bicycle's brakes are vital to life, the brakes are the most important part of any improvement in the bicycle.

Because the hydraulic disc brakes can still exert their braking effect even in rainy days or when the road surface is not good, the hydraulic disc brakes in the bicycle brakes are the best weather resistance among all the brakes. The brake principle of the hydraulic disc brake is to clamp the two sides of the brake disc by the tongs, forcing the speed of the brake disc to decrease and achieve the effect of braking.

However, when the hydraulic disc brake is braked, the heat generated by the friction between the brake caliper and the brake disc is transmitted to the brake oil, which causes the temperature of the brake oil to rise, thereby causing deterioration of the brake oil and an increase in the fluidity of the brake oil. Deterioration of the brake oil will cause the piston to fail to operate normally, and the increased fluidity of the brake oil will cause oil leakage problems, both of which will cause the brake to fail and seriously affect the safety of life.

Summary of the invention

The object of the present invention is to provide a hydraulic brake device for a bicycle, which can avoid the problem of brake failure caused by an increase in the temperature of the brake oil to ensure life safety.

The technical means adopted by the present invention for solving the problems of the prior art provides a hydraulic brake device for a bicycle, which is controlled by a driver's handle. The hydraulic brake device of the bicycle includes: an oil supply mechanism Connected to the handlebar handle; a hydraulic cylinder mechanism is provided with a piston rod member, an oil chamber, an oil inlet line, and an oil discharge line, the piston rod member is disposed at an opening of the oil chamber, and The oil inlet pipeline is connected to the oil supply mechanism and the oil chamber, and the oil inlet pipeline is provided with an oil inlet check valve, the oil discharge pipeline is connected to the oil chamber, and the oil discharge pipeline is provided with an oil return a valve; an oil storage tank, storing brake oil, and providing a return line, the return line is provided with a return check valve, the oil storage tank is connected between the oil discharge line and the return line, and The return line is directly connected to the oil supply mechanism, or the return line is connected to the oil supply line to connect the oil supply mechanism; and a brake mechanism is connected to the piston rod member, wherein the brake driver is pressed When the time comes, the brake oil is self-supplied. The mechanism flows unidirectionally to the oil chamber through the oil return check valve, pressurizes the oil chamber to push the piston rod member to an extrapolated position, and the piston rod member drives the brake mechanism to move to a brake position And 煞 When releasing the brake of the handlebar, the brake oil flows from the oil chamber to the oil reservoir through the oil discharge check valve unidirectionally, so that the piston rod member returns from the extrapolated position to a inner clamp And the brake oil is unidirectionally flowed back to the oil supply mechanism from the oil storage tank through the return flow check valve.

In an embodiment of the present invention, a hydraulic brake device for a bicycle is provided. The brake mechanism includes a pivoting portion and a brake member, and the piston rod member is fixed to a bicycle of the bicycle by the pivoting portion. The piston rod member pivots with the pivoting portion as an axis, the braking member is disposed on the piston rod member, and the braking member is inwardly pivoted when the piston rod member is pivoted to the extrapolated position Go to the brake location.

In an embodiment of the present invention, a hydraulic brake device for a bicycle is provided. The brake mechanism includes a brake member and an elastic member. The brake member is disposed on the piston rod member, and the elastic member is used for The piston rod member applies an elastic force, and when the piston rod member moves to the inner clamp position, the brake member is pushed outwardly away from the braking position by the elastic force.

In an embodiment of the present invention, a hydraulic brake device for a bicycle is provided. The hydraulic cylinder mechanism includes two piston rod members, and the brake mechanism includes two brake members, and the two brake components are respectively Connected to the two piston rod members.

In an embodiment of the invention, a hydraulic brake device for a bicycle is provided, and a brake block of the brake member is made of a polymer material.

In an embodiment of the invention, there is provided a hydraulic brake device for a bicycle, the oil supply mechanism comprising an oil chamber and a piston connected to a brake line of the handlebar handle, and the piston system The piston is disposed at an open end of the oil chamber, and the piston is supplied to the oil chamber of the hydraulic cylinder mechanism by pressing the brake handlebar.

In an embodiment of the present invention, a hydraulic brake device for a bicycle is provided. When the piston rod member moves to the inner clamp position, the brake mechanism is driven by the piston rod member to release the brake.

In an embodiment of the invention, a hydraulic brake device for a bicycle is provided, and the brake mechanism is a clip-type brake mechanism.

In an embodiment of the invention, a hydraulic brake device for a bicycle is provided, and a heat dissipation mechanism is disposed on the return line.

The hydraulic brake device of the bicycle of the present invention has the following effects. When the pedal of the bicycle is released, the brake oil that has increased in temperature due to the brake will flow from the hydraulic cylinder mechanism to the oil storage tank, and mix with the brake oil in the oil storage tank to lower the temperature of the brake oil flowing into the oil storage tank. And the brake oil in the oil storage tank will flow back to the oil supply mechanism while the brake oil of the hydraulic cylinder mechanism flows into the oil storage tank. This reduces the temperature of the brake oil and avoids the problem of brake failure caused by the temperature increase of the brake oil to ensure life safety.

DRAWINGS

1 is a schematic view showing a hydraulic brake device according to an embodiment of the present invention.

2 is a schematic view showing the hydraulic brake device according to the embodiment of the present invention when braking.

Fig. 3 is a schematic view showing the mounting of the hydraulic brake device to a bicycle according to the embodiment of the present invention.

4 is a schematic view showing a hydraulic brake device according to another embodiment of the present invention.

Symbol Description

100 hydraulic brake device

1 oil supply mechanism

11 oil chamber

111 open end

12 piston

2 hydraulic cylinder mechanism

21 piston rod parts

22 oil room

221 opening

23 oil inlet pipe

231 oil check valve

24 oil pipeline

241 oil check valve

3 oil storage tank

31 return line

311 return check valve

4 brake mechanism

41 pivoting

42 brake parts

421 brake block

43 elastic parts

5 heat dissipation mechanism

B bicycle

F frame

H 煞 rider handle

L 煞 car line

W1 front wheel

W2 rear wheel

detailed description

Embodiments of the present invention will be described below with reference to Figs. 1 to 4 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

As shown in FIGS. 1 and 2, a hydraulic brake device 100 according to an embodiment of the present invention is operated by a rider H of a bicycle B (see FIG. 3). The hydraulic brake device 100 includes an oil supply mechanism 1, a hydraulic cylinder mechanism 2, an oil reservoir 3, and a brake mechanism 4 connected to the brake handle H.

As shown in FIG. 1 and FIG. 2, in the present embodiment, the oil supply mechanism 1 includes an oil chamber 11 and a piston 12. The piston 12 is connected to a brake line L of the handlebar H, and the piston 12 is disposed at an open end 111 of the oil chamber 11. The piston 12 supplies the brake oil in the oil chamber 11 to the hydraulic cylinder mechanism 2 by pressing the brake handle H. Of course, the invention is not limited thereto. The oil supply mechanism may also be an electronic fuel supply mechanism, and the supply of brake oil is controlled by electronic components.

As shown in FIG. 1 and FIG. 2, the hydraulic cylinder mechanism 2 is provided with a piston rod member 21, an oil chamber 22, an oil inlet line 23, and an oil discharge line 24. The piston rod member 21 is disposed in an opening portion 221 of the oil chamber 22. The oil inlet pipe 23 is connected to the oil chamber 11 of the oil supply mechanism 1 and the oil chamber 22, and the oil inlet pipe 23 is provided with an oil inlet check valve 231. Specifically, the oil return check valve 231 is configured to cause the brake oil to flow into the oil chamber 22 from the oil chamber 11 of the oil supply mechanism 1 in one direction. The oil discharge line 24 is connected to the oil chamber 22, and the oil discharge line 24 is provided with an oil discharge check valve 241. Specifically, the oil discharge check valve 231 is configured to cause the brake oil to flow out of the oil chamber 22 unidirectionally.

The oil storage tank 3 stores brake oil. The oil storage tank 3 is provided with a return line 31, and the oil storage tank 3 is connected between the oil discharge line 24 and the return line 31. The return line 31 is provided with a return check valve 311. Specifically, the return check valve 311 is configured to cause the brake oil to flow out of the oil sump 3 unidirectionally. In the present embodiment, the return line 311 is connected to the oil inlet line 23 to be connected to the oil supply mechanism 1. Alternatively, as shown in FIG. 4, in another embodiment of the present invention, the return line 31 is directly connected to the oil supply mechanism 1.

As shown in FIGS. 1 and 2, the brake mechanism 4 is coupled to the piston rod member 21. In the present embodiment, the brake mechanism 4 is disposed on a front wheel W1 of the bicycle for braking the front wheel W1. As shown in FIG. 3, the brake mechanism 4 can also be mounted on a rear wheel W2 of the bicycle B for braking the rear wheel W2. The brake mechanism 4 includes a pivoting portion 41, a brake member 42, and an elastic member 43. The pivoting portion 41 is fixed to the piston rod member 21 and a frame F of the bicycle B. The piston rod member 21 pivots with the pivot portion 41 as an axis. The brake member 42 is disposed on the piston rod member 21, and the brake member 42 is mounted with a brake block 421. Preferably, the brake block 421 is made of a polymer material. Since the polymer material has low thermal conductivity, heat generated by friction between the brake block 421 and the front wheel W1 or the rear wheel W2 will be transmitted to the front wheel W1 or the rear wheel W2 having high thermal conductivity during braking. It is not easy to conduct to the brake oil, thereby reducing the temperature rise of the brake oil. The elastic member 43 is used to apply an elastic force to the piston rod member 21. For example, the elastic member 43 is disposed on the piston rod member 21 and the frame F.

As shown in FIG. 1, when the brake handle H is pressed, the brake oil is unidirectionally flowed from the oil supply mechanism 1 through the oil return check valve 231 to the oil chamber 22, and the oil chamber 22 is pressurized. The piston rod member 21 is pushed to an extrapolated position, and the brake rod member 21 is driven to move to a braking position to brake the vehicle. In the present embodiment, the piston rod member 21 is pivoted to the extrapolated position with the pivoting portion 41 as an axis, and the brake member 42 pivots inwardly with the pivoting portion 41 as an axis. To the brake position.

As shown in FIG. 2, when the pressing of the handlebar H is released, the brake oil flows unidirectionally from the oil chamber 22 through the oil discharge check valve 241 to the oil reservoir 3, so that the piston rod member 21 is The extrapolated position returns to an inner clamping position, and the brake oil flows unidirectionally from the oil storage tank 3 through the return check valve 331 back to the oil supply mechanism 1. When the piston rod member 21 is moved to the inner clamp position, the brake member 42 is pushed outwardly away from the brake position by the elastic force of the elastic member 43 to release the brake. Alternatively, the elastic member 43 is an unnecessary arrangement. When the piston rod member 21 is moved to the inner clamp position, the brake mechanism 4 is driven by the piston rod member 21 to release the brake.

As shown in FIG. 1 and FIG. 2, according to the hydraulic brake device 100 of the embodiment of the present invention, the brake mechanism 4 is a clip type brake mechanism. Specifically, the hydraulic cylinder mechanism 2 includes two piston rod members 21, and the brake mechanism 4 includes two brake members 42 that are respectively connected to the two piston rod members 21. .

As shown in FIG. 1, FIG. 2 and FIG. 4, the return line 31 is provided with a heat dissipating mechanism 5 for reducing the flow to the oil supply. The temperature of the brake oil of the mechanism 1. Preferably, the heat dissipation mechanism 5 is an air-cooled heat dissipation mechanism.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those who have ordinary skill in the art can make other modifications in accordance with the scope of the defined patent application and the above description, but the modifications should still be It is within the scope of the invention to the invention of the invention.

Claims

A hydraulic brake device for a bicycle is controlled by a handlebar handle, characterized in that the hydraulic brake device of the bicycle comprises:

An oil supply mechanism is connected to the handlebar handlebar;

a hydraulic cylinder mechanism is provided with a piston rod member, an oil chamber, an oil inlet line, and an oil discharge line. The piston rod member is disposed at an opening of the oil chamber, and the oil inlet line is connected to The oil supply mechanism and the oil chamber, and the oil inlet pipeline is provided with an oil inlet check valve, the oil discharge pipeline is connected to the oil chamber, and the oil discharge pipeline is provided with an oil return check valve;

An oil storage tank storing brake oil and a return line is provided, the return line is provided with a return check valve, the oil storage tank is connected between the oil discharge line and the return line, and the return pipe The road system is directly connected to the oil supply mechanism, or the return line is connected to the oil inlet pipe to connect the oil supply mechanism;

a brake mechanism connected to the piston rod member,

When the brake handle is pressed, the brake oil is unidirectionally flowed from the oil supply mechanism to the oil chamber through the oil return check valve, and the oil chamber is boosted to push the piston rod member to an extrapolated position. And the piston rod member drives the brake mechanism to move to a brake position to brake,

When the pressing of the handlebar handle is released, the brake oil is unidirectionally flowed from the oil chamber to the oil storage tank through the oil discharge check valve, so that the piston rod member returns from the extrapolated position to an inner clamp position. And the brake oil is unidirectionally flowed back to the oil supply mechanism from the oil storage tank through the return flow check valve.
The hydraulic brake device according to claim 1, wherein the brake mechanism comprises a pivoting portion and a brake member, and the piston rod member is fixed to a frame of the bicycle by the pivoting portion, The piston rod member pivots with the pivoting portion as an axis, the braking member is disposed on the piston rod member, and the braking member pivots inwardly to the piston rod member when the piston rod member is pivoted to the extrapolated position Brake position.
The hydraulic brake device according to claim 1 or 2, wherein the brake mechanism comprises a brake member and an elastic member, the brake member is disposed on the piston rod member, and the elastic member is used for the brake device The piston rod member applies an elastic force, and when the piston rod member moves to the inner clamp position, the brake member is pushed outwardly away from the braking position by the elastic force.
The hydraulic brake device according to claim 1, wherein the hydraulic cylinder mechanism comprises two piston rod members, and the brake mechanism comprises two brake members, and the two brake members are respectively The piston rods are connected.
The hydraulic brake device according to claim 2 or 4, wherein the brake block of the brake member is made of a polymer material.
The hydraulic brake device according to claim 1, wherein the oil supply mechanism comprises an oil chamber and a piston. The piston is connected to a brake line of the handlebar handle, and the piston is disposed at an open end of the oil chamber, and the piston supplies the brake oil in the oil chamber to the oil by pressing the handlebar handle The oil chamber of the cylinder mechanism.
The hydraulic brake device according to claim 1, wherein when the piston rod member is moved to the inner clamp position, the brake mechanism is driven by the piston rod member to release the brake.
The hydraulic brake device according to claim 1, wherein the brake mechanism is a clip type brake mechanism.
The hydraulic brake device according to claim 1, further comprising a heat dissipating mechanism disposed in the return line.