TW201617254A - A hydraulic brake apparatus for bicycles - Google Patents

Abstract

A hydraulic brake apparatus for bicycles, controlled by a brake handle, comprises a brake fluid supply member, a hydraulic cylinder member, an brake fluid tank and a braking member. When the brake handle is pressed, the brake fluid is one-way flow to a brake fluid chamber of the hydraulic cylinder member, the pressure within the brake fluid chamber is increased, a piston rod of the hydraulic cylinder member is pushed to an outward position, and the piston rod is driving the braking member which is connected with the piston rod to a braking position to brake. When the brake handle is released, the brake fluid is one-way flow from the brake fluid chamber of the hydraulic cylinder member to the brake fluid tank, the piston rod of the hydraulic cylinder member is returned to retracted position, and the brake fluid is one-way flow through a check valve from the brake fluid tank to the brake fluid supply member.

Description

Hydraulic brake device for bicycle

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

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 brakes are braked, the heat generated by the friction between the brake calipers and the brake discs is transmitted to the brake oil, which causes the brake oil temperature to rise, which causes the brake oil to deteriorate and the fluidity of the brake oil to increase. . 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.

Therefore, 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 for solving the problems of the prior art is to provide a hydraulic brake device for a bicycle, which is controlled by a driver's handle. The hydraulic brake device of the bicycle comprises: an oil supply mechanism, which is connected a hydraulic cylinder mechanism, a piston rod member, an oil chamber, an oil inlet line, and an oil discharge line, the piston rod member being disposed at an opening of the oil chamber, and the An 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 returning 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 a 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 handle is pressed When 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 When the brake is released, the brake oil is unidirectionally flowed from the oil chamber to the oil reservoir through the oil discharge check valve, so that the piston rod member returns from the extrapolated position to the brake chamber. The inner clamping 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.

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 one of the bicycle frames 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 inward when the piston rod member pivots to the extrapolated position To the brake position.

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 brake member. 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 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 The two piston rod members are connected.

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 present invention, a hydraulic brake device for a bicycle is provided. The oil supply mechanism includes an oil chamber and a piston connected to a brake line of the handlebar handle, and the piston system is disposed. At an open end of the oil chamber, the piston presses the brake handlebar to supply the brake oil in the oil chamber to the oil chamber of the hydraulic cylinder mechanism.

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 further includes a heat dissipation mechanism 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.

Hereinafter, embodiments of the present invention will be described based on 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 one of the bicycles B (as shown in 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 FIGS. 1 and 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 FIGS. 1 and 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 one of the opening portions 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 creation, 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 one of the bicycle frames 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, which is not easy. Conducted to the brake oil to reduce 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 to the oil chamber 22 through the oil return check valve 231, 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. 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 The extrapolated position is returned to an inner clamping position, and the brake oil is unidirectionally returned from the oil storage tank 3 to the oil supply mechanism 1 through the return check valve 331. 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 FIGS. 1 and 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 Figs. 1, 2, and 4, the return line 31 is provided with a heat dissipating mechanism 5 for reducing the temperature of the brake oil flowing to the oil supply 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 of ordinary skill in the art can make other modifications in accordance with the scope of the invention as defined below and the description above, but such modifications should still be It is within the scope of the invention to the invention of the invention.

100‧‧‧Hydraulic brake device
1‧‧‧ Oil supply agency
11‧‧‧ oil chamber
111‧‧‧Open end
12‧‧‧Piston
2‧‧‧Hydraulic cylinder mechanism
21‧‧‧ piston rod parts
22‧‧‧ oil room
221‧‧‧ openings
23‧‧‧Intake line
231‧‧‧Inlet check valve
24‧‧‧Drainage line
241‧‧‧ Oil check valve
3‧‧‧ oil storage tank
31‧‧‧Return line
311‧‧‧Return check valve
4‧‧‧ brake mechanism
41‧‧‧ pivoting department
42‧‧‧煞车件
421‧‧‧煞车块
43‧‧‧Flexible parts
5‧‧‧heating mechanism
B‧‧‧Bicycle
F‧‧‧ frame
H‧‧‧煞 rider handle
L‧‧‧煞车线
W1‧‧‧ front wheel
W2‧‧‧ rear wheel

Fig. 1 is a schematic view showing a hydraulic brake device according to an embodiment of the present invention. Fig. 2 is a view showing the hydraulic brake device according to the embodiment of the present invention when braking. Fig. 3 is a view showing the mounting of the hydraulic brake device to a bicycle according to the embodiment of the present invention. Fig. 4 is a schematic view showing a hydraulic brake device according to another embodiment of the present invention.

100‧‧‧Hydraulic brake device

1‧‧‧ Oil supply agency

11‧‧‧ oil chamber

111‧‧‧Open end

12‧‧‧Piston

2‧‧‧Hydraulic cylinder mechanism

21‧‧‧ piston rod parts

22‧‧‧ oil room

221‧‧‧ openings

23‧‧‧Intake line

231‧‧‧Inlet check valve

24‧‧‧Drainage line

241‧‧‧ Oil check valve

3‧‧‧ oil storage tank

31‧‧‧Return line

311‧‧‧Return check valve

4‧‧‧ brake mechanism

41‧‧‧ pivoting department

42‧‧‧煞车件

421‧‧‧煞车块

43‧‧‧Flexible parts

5‧‧‧heating mechanism

H‧‧‧煞 rider handle

L‧‧‧煞车线

W1‧‧‧ front wheel

Claims (9)

A hydraulic brake device for a bicycle is controlled by a driver's handle. The hydraulic brake device of the bicycle comprises: an oil supply mechanism connected to the handlebar handle; a hydraulic cylinder mechanism provided with a piston rod a fuel tank, an oil inlet pipe, and an oil discharge pipe, the piston rod member is disposed at an opening of the oil chamber, and the oil inlet pipe is connected to the oil supply mechanism and the oil chamber, and The oil inlet pipe is provided with an oil return check valve, the oil discharge pipe is connected to the oil chamber, and the oil discharge pipe is provided with an oil return check valve; an oil storage tank storing brake oil and a return pipe 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 pipe a road system is connected to the oil inlet pipe and connected to the oil supply mechanism; and a brake mechanism is connected to the piston rod member, wherein when the brake handle is pressed, the brake oil system passes through the oil supply mechanism The valve flows unidirectionally to the oil chamber, so that The chamber is stepped up to push the piston rod member to an extrapolated position, and the brake rod member drives the brake mechanism to move to a braking position to brake the vehicle. When the pressing of the brake lever is released, the brake oil is The oil chamber flows unidirectionally 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 clamping position, and the brake oil is passed from the oil storage tank through the return flow check valve. Flowing back to the oil supply mechanism in one direction. The hydraulic brake device of claim 1, wherein the brake mechanism comprises a pivoting portion and a brake member, the piston rod member being fixed to a frame of the bicycle by the pivoting portion, the piston rod member The pivoting portion pivots about the pivoting portion, and the braking member is disposed on the piston rod member. When the piston rod member is pivoted to the extrapolated position, the braking member is pivoted inward to the braking position. The hydraulic brake device of 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 piston rod member An elastic force is applied, and when the piston rod is moved to the inner clamp position, the brake member is pushed outwardly away from the braking position by the elastic force. The hydraulic brake device of 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 coupled to the two piston rods. The pieces are connected. The hydraulic brake device of claim 2 or 4, wherein the brake block of the brake member is made of a polymer material. The hydraulic brake device of claim 1, wherein the oil supply mechanism comprises an oil chamber and a piston, the piston system is connected to a brake line of the handlebar handle, and the piston system is disposed in the oil chamber. An open end, the piston is supplied to the oil chamber of the hydraulic cylinder mechanism by pressing the brake handlebar to press the brake oil in the oil chamber. 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 of claim 1, wherein the brake mechanism is a clip-on brake mechanism. The hydraulic brake device of claim 1, further comprising a heat dissipating mechanism disposed in the return line.