WO2023249194A1

WO2023249194A1 - Sequential braking device

Info

Publication number: WO2023249194A1
Application number: PCT/KR2023/002012
Authority: WO
Inventors: 이규용; 이동우
Original assignee: 이규용; 이동우
Priority date: 2022-06-21
Filing date: 2023-02-10
Publication date: 2023-12-28
Also published as: KR102479622B1

Abstract

A sequential braking device is disclosed. A sequential braking device may include: a housing having a first inner space and a second inner space which are formed therein and filled with a working fluid; a rear-wheel brake line for connecting a first outlet formed in the first inner space and a rear-wheel brake module; and a front-wheel brake line for connecting a second outlet formed in the second inner space and a front-wheel brake module, wherein when a brake lever is operated, a part of the working fluid filled in the first inner space is introduced into the rear-wheel brake line and the other part thereof moves to the second inner space, and the working fluid filled in the second inner space is introduced into the front-wheel brake line.

Description

sequential braking system

The present invention relates to a sequential braking device, and more specifically, to a sequential braking device in which braking force can be generated first on the rear wheels with sufficient force and then sequentially on the front wheels.

In general, braking of a two-wheeled vehicle occurs when the driver pulls the brake levers mounted on both sides of the steering wheel, and a pair of wires connected to each brake lever are pulled or the brake pad contacts the wheel or brake disc by hydraulic pressure, and the friction force causes the brake pad to contact the wheel or brake disc. Braking takes place.

When braking a two-wheeled vehicle, if only the front brake lever is held, the driver's weight is shifted forward, causing rotation around the front wheel due to centrifugal force, raising the risk of a rollover accident.

The correct way to use the brakes to prevent such rollover accidents is as follows. When braking is necessary, the rear wheel brake is first used to reduce inertia by generating friction between the rear wheel and the ground, and then the front wheel brake is sequentially used. In this case, rollover accidents can be prevented by suppressing the sudden forward shift of the center of gravity, and braking force can be increased by using the friction of both the front and rear wheels. In other words, if you use the rear and front brakes sequentially, you can effectively brake while preventing a front rollover accident.

However, in the conventional brake system, the selective operation of the front/rear wheel brakes is performed solely at the driver's discretion, so a situation may occur in which only the front wheel brakes are activated due to the driver's carelessness or in a sudden situation, and in this case, it can easily overturn, causing damage to the driver. There were frequent cases of causing material damage to other people, including those around them.

Therefore, even if either brake lever is activated due to the driver's carelessness or in an emergency situation, technology has been developed to ensure safety by preventing accidents caused by driver misjudgment by braking the rear wheel brake first and then the front wheel brake. This is necessary.

The present invention provides a sequential braking device in which braking force can be generated first on the rear wheels with sufficient force and then sequentially on the front wheels.

A sequential braking device according to an embodiment of the present invention includes a housing having a first internal space and a second internal space filled with a working fluid; a rear-wheel brake line connecting a first outlet formed in the first internal space and a rear-wheel brake module; and a front-wheel brake line connecting a second outlet formed in the second internal space and the front-wheel brake module, wherein when the brake lever is operated, a portion of the working fluid filled in the first internal space flows into the rear-wheel brake line. , another part moves into the second internal space, and the working fluid filled in the second internal space may flow into the front wheel brake line.

Additionally, when the force of the working fluid in the rear wheel brake line becomes maximum, another part of the working fluid filled in the first internal space may move to the second internal space.

Additionally, the first internal space may have a larger volume than the second internal space.

In addition, a first connection passage connecting the first internal space and the second internal space is formed in the housing, a first piston located in the first internal space, and movable in the first internal space; a second piston located within the second internal space and movable by the working fluid flowing from the first internal space through the first connection passage; a first elastic spring located within the first internal space and compressed as the first piston moves; and a second elastic spring located within the second internal space and compressed according to the movement of the second piston, wherein when the brake lever is operated, the first piston moves toward the first outlet and the first internal spring is compressed according to the movement of the second piston. Some of the working fluid filled in the space may flow into the rear wheel brake line, and another part may flow into the second internal space through the first connection passage to push the second piston toward the second outlet.

Additionally, an operating rod is formed at the rear end of the first piston, and one end of the operating rod may be coupled to the brake lever.

In addition, the first elastic spring is located between the first piston and the first outlet within the first internal space, and the second elastic spring is located between the second piston and the second outlet within the second internal space. It can be located in between.

In addition, the housing includes a third internal space filled with the working fluid, a second connection passage connecting the third internal space and the first internal space, and a second connection passage connecting the third internal space and the second internal space. A third connection passage is further formed, and the central axis of the third internal space may be located higher than the central axes of the first internal space and the second internal space.

In addition, one end of the first connection passage is connected to the first internal space in a region between the first outlet and the first piston, and the other end is opposite to the second outlet with the second piston in between. It may be connected to the second internal space on the side.

In the sequential braking device according to the present invention, the first piston is located in the first internal space of the housing, and the other end of the operating rod formed at the rear end of the first piston is coupled to the brake lever. When the brake lever is pulled, the first piston moves forward by the operating rod, compressing the first elastic spring, some of the working fluid in the first internal space flows into the rear wheel brake line through the first outlet, and another part is connected to the brake lever. It flows into the second internal space through the flow path. And the rear wheel brake module operates due to the force of the operating fluid flowing into the rear wheel brake line, and the rear wheel is braked first. Until the force of the working fluid in the rear wheel brake reaches its maximum, the force acting on the working fluid in the second internal space is less than or equal to the elastic force of the second elastic spring, so the second piston does not move. When the force of the working fluid in the rear wheel brake line becomes maximum, the force acting on the working fluid in the first internal space is transmitted to the working fluid in the second internal space through the connection passage, and this force causes the second piston to move rearward. A portion of the working fluid that is pushed and filled in the second internal space flows into the front wheel brake line through the second outlet, thereby sequentially braking the front wheels. Through the above-described driving process, the sequential braking device according to the present invention can sequentially brake the front wheels after the rear wheels are braked with sufficient force.

1 is a diagram showing a steering wheel of a two-wheeled vehicle equipped with a sequential braking device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the sequential braking device taken along line A-A' in FIG. 1.

FIG. 3 is a cross-sectional view of the net braking device taken along line B-B' in FIG. 1.

Figure 4 is a diagram showing the operation process of the sequential braking device according to the operation of the brake lever.

Figure 5 is a diagram showing a sequential braking device according to another embodiment of the present invention.

Figure 6 is a cross-sectional view taken along line A-B in Figure 5.

7 and 8 are diagrams sequentially showing the operation process of a sequential braking device according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical idea of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be formed directly on the other element or that a third element may be interposed between them. Additionally, in the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content.

Additionally, in various embodiments of the present specification, terms such as first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiment. Additionally, in this specification, 'and/or' is used to mean including at least one of the components listed before and after.

In the specification, singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "include" or "have" are intended to designate the presence of features, numbers, steps, components, or a combination thereof described in the specification, but are not intended to indicate the presence of one or more other features, numbers, steps, or components. It should not be understood as excluding the possibility of the presence or addition of elements or combinations thereof. Additionally, in this specification, “connection” is used to mean both indirectly connecting and directly connecting a plurality of components.

Additionally, in the following description of the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Figure 1 is a diagram showing a steering wheel of a two-wheeled vehicle equipped with a sequential braking device according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the sequential braking device taken along line A-A' in Figure 1, and Figure 3 is a diagram showing the steering wheel of a two-wheeled vehicle equipped with a sequential braking device according to an embodiment of the present invention. This is a cross-sectional view of the Sunja braking device along line B-B'.

1 to 3, the sequential braking device 100 is mounted on the handle 10 of a two-wheeled vehicle. The sequential braking device 100 brakes the rear wheels first by operating the brake lever 20, brakes the rear wheels with sufficient force, and then sequentially brakes the front wheels. Two-wheeled vehicles include bicycles, electric bicycles, scooters, motorcycles, and electric kickboards.

The sequential braking device 100 can be mounted on only one handle 10 of the two-wheeled vehicle. Alternatively, the sequential braking device 100 may be mounted on both handles of a two-wheeled vehicle.

The sequential braking device 100 includes a housing 110, a rear-wheel brake line 120, a front-wheel brake line 130, a first piston 140, a second piston 150, a first elastic spring 160, and a first elastic spring 160. 2Includes an elastic spring (170).

The housing 110 has a predetermined shape and can be coupled to the handle 10 of the two-wheeled vehicle using a coupling means. Inside the housing 110, there is a first internal space 111, a second internal space 112, a third internal space 113, a first outlet 114, a second outlet 115, and a connection flow path 116. , a first working fluid supply flow path 117, and a second working fluid supply flow path 118 are formed.

The first internal space 111 is formed inside the housing 110 and has a predetermined length from the front end to the rear end. The first internal space 111 has a cylindrical shape with a first diameter and is provided as a space with a first volume.

The second internal space 112 is separated from the first internal space 111 and is formed inside the housing 110, and is formed to have a predetermined length from the front end to the rear end. The second internal space 112 has a cylindrical shape with a second diameter and is provided as a space with a second volume. According to an embodiment, the second diameter may be smaller than the first diameter, and the second volume may be smaller than the first volume.

The third internal space 113 is separated from the first and second

internal spaces

111 and 112 and is formed inside the housing 110. The third internal space 113 is a space having a predetermined length from the front end to the rear end, and may have a smaller volume than the first and second

internal spaces

111 and 112. According to the embodiment, the central axis C3 of the third internal space 113 is located higher than the central axes C1 and C2 of the first and second

internal spaces

111 and 112.

The above-mentioned first to third

internal spaces

111, 112, and 113 are filled with a working fluid. The working fluid may be hydraulic oil.

The first outlet 114 is formed at the front of the first internal space 111 and provides a passage through which the working fluid filled in the first internal space 114 flows out to the rear wheel brake line 120.

The second outlet 115 is formed at the rear end of the second internal space 112 and provides a passage through which the working fluid filled in the second internal space 112 flows out to the front wheel brake line 130.

The connection passage 116 connects the first internal space 111 and the second internal space 112. Specifically, one end of the connection passage 116 is connected to the front area of the first internal space 111 adjacent to the first outlet 114, and the other end is connected to the front area of the second internal space 112. The other end of the connection passage 116 is located on the opposite side of the second outlet 115. The connection passage 116 provides a passage through which the working fluid can move between the first internal space 111 and the second internal space 112.

The first operating fluid supply passage 117 connects the first internal space 111 and the third internal space 113. According to the embodiment, the first operating fluid supply passage 117 connects the central area of the first internal space 111 and the central area of the third internal space 113. The first working fluid supply passage 117 provides a passage through which the working fluid filled in the third internal space 113 flows into the first internal space 111. If the working fluid filled in the first internal space 111 leaks to the outside and the flow rate of the working fluid in the first internal space 111 is not sufficient, the working fluid filled in the third internal space 113 supplies the first working fluid. It flows into the first internal space 111 through the flow path 117. Since the central axis C3 of the third internal space 113 is located higher than the central axis C1 of the first internal space 111, the working fluid may flow into the first internal space 111 by its own weight. .

The second operating fluid supply passage 118 connects the second internal space 112 and the third internal space 113. According to the embodiment, the second operating fluid supply passage 118 connects the central area of the second internal space 112 and the central area of the third internal space 113. The second working fluid supply passage 112 provides a passage through which the working fluid filled in the third internal space 113 flows into the second internal space 112. If the working fluid filled in the second internal space 112 leaks to the outside and the flow rate of the working fluid in the second internal space 112 is not sufficient, the working fluid filled in the third internal space 113 is transferred to the second working fluid space. It flows into the second internal space 112 through the flow path 118. Since the central axis C3 of the third internal space 113 is located higher than the central axis C2 of the second internal space 112, the working fluid may flow into the second internal space 112 by its own weight. .

The rear brake line 120 connects the first outlet 114 and the rear brake module (not shown). The inside of the rear brake line 120 is filled with working fluid, and the force transmitted from the brake lever 20 is transmitted to the rear brake module.

The front wheel brake line 130 connects the second outlet 115 and the front wheel brake module (not shown). The inside of the front wheel brake line 130 is filled with working fluid, and the force transmitted from the brake lever 20 is transmitted to the front wheel brake module.

The first piston 140 is located in the first internal space 111. The first piston 140 has a diameter corresponding to the first internal space 111 and has a shorter length than the first internal space 111. An operating rod 145 is coupled to the rear end of the first piston 140. The operating rod 145 is provided with a predetermined length, one end is coupled to the first piston 140, and protrudes out of the first internal space 111 through a passage 119 formed at the rear end of the housing 110. . The other end of the operating rod 145 is coupled to the brake lever 20. By operating the brake lever 20, the operating rod 145 is pushed forward and the first piston 140 can move to the front area within the first internal space 111. When the brake lever 20 does not operate, the first piston 140 is located in the rear area of the first internal space 111. At this time, the tip of the first piston 140 is located rearward at a predetermined distance from the first operating fluid supply passage 117.

The second piston 150 is located in the second internal space 112. The second piston 150 has a diameter corresponding to the second internal space 112 and has a shorter length than the second internal space 112. The second piston 150 may move to the rear area of the second internal space 112 by the force of the working fluid flowing into the second internal space 112 from the first internal space 111. When the force of the working fluid is not transmitted, the rear end of the second piston 150 is located in front of the second working fluid supply flow path 118 at a predetermined distance away from the second working fluid supply flow path 118.

A working fluid supply port 121 may be formed in the housing 110. The working fluid supply port 121 is connected to the third internal space 113 and provides a passage for replenishing the working fluid. The working fluid supply port 121 may be opened and closed by the valve 122.

The first elastic spring 160 is located in the first internal space 111 in the section between the first piston 140 and the first outlet 114. The first elastic spring 160 is compressed when the first piston 140 moves forward by the operation of the brake lever 20, and provides a restoring force to the first piston 140 when the force of the brake lever 20 is released. and moves the first piston 140 rearward.

The second elastic spring 170 is located in the second internal space 112 in the section between the second piston 150 and the second outlet 115. The second elastic spring 170 is compressed when the second piston 150 moves rearward by the force of the working fluid, and when the force of the working fluid is released, it transmits a restoring force to the second piston 150 to Move the piston 150 forward.

Although not shown in the drawing, an elasticity adjustment screw that can adjust the elastic force of the second elastic spring 170 may be provided.

Hereinafter, the operation process of the above-described sequential braking device will be described.

Referring to FIG. 4, when the rider of the two-wheeled vehicle pulls the brake lever 20, the brake lever 20 rotates around the coupling shaft 21 and pushes the connecting rod 145 forward. Due to this, the first piston 140 moves forward and the first elastic spring 160 is compressed. While the first piston 140 moves forward, some of the working fluid in the first internal space 111 flows into the rear wheel brake line 120 through the first outlet 114. The rear wheel brake module operates by the force of the working fluid flowing into the rear wheel brake line 120, so that the rear wheel is braked first. In this process, another part of the working fluid in the first internal space 111 flows into the second internal space 112 through the connection passage 116.

Until the force of the working fluid in the rear wheel brake line 120 reaches its maximum, the force acting on the working fluid in the second internal space 112 is less than or balanced by the elastic force of the second elastic spring 170, so that the second piston (150) does not move. When the force of the working fluid in the rear wheel brake line 120 is maximized, the force acting on the working fluid in the first internal space 111 is transmitted to the working fluid in the second internal space 112 through the connection passage 116. do. Afterwards, the force transmitted to the working fluid in the second internal space 112 gradually increases, and the force of the working fluid becomes greater than the elastic force of the second elastic spring 170. Due to this, the second piston 150 moves rearward and the second elastic spring 170 is compressed. As the second piston 150 moves, part of the working fluid filled in the second internal space 112 flows into the front wheel brake line 130 through the second outlet 115. Due to the force of the working fluid flowing into the front wheel brake line 130, the front wheel brake module operates to brake the front wheels of the two-wheeled vehicle. In this way, the sequential braking device according to the present invention can sequentially brake the front wheels after braking the rear wheels with sufficient force.

Meanwhile, while the first piston 140 moves forward, the first operating fluid supply passage 117 is blocked by the first piston 140. As a result, the working fluid filled in the first internal space 111 does not flow into the third internal space 113, thereby preventing loss of the working fluid in the first internal space 111. And while the second piston 150 moves rearward, the second operating fluid supply passage 118 is blocked by the second piston 150. As a result, the working fluid filled in the second internal space 112 does not flow into the third internal space 113, thereby preventing loss of the working fluid in the second internal space 112.

When the rider releases the force pulling the brake lever 20, the first piston 140 is pushed rearward by the restoring force of the first elastic spring 160. In this process, the pressure of the working fluid in the rear wheel brake line 120 is lowered, and some of the working fluid flows into the first internal space 111 through the first outlet 114, thereby releasing the braking of the rear wheels. And as the pressure of the working fluid in the first internal space 111 and the second internal space 112 decreases, the force of the working fluid pushing the second piston 150 backward is released. The second piston 150 moves forward by the restoring force of the second elastic spring 170. In this process, a part of the working fluid in the second internal space 112 flows into the first internal space 111 through the connection passage 116, and a part of the working fluid from the front wheel brake line 130 flows into the second outlet 115. ) flows into the second internal space 112, and the brakes on the front wheels are released.

Figure 5 is a diagram showing a sequential braking device according to an embodiment of the present invention, and Figure 6 is a cross-sectional view taken along line A-B of Figure 5.

Referring to Figures 5 and 6, the sequential braking device 1000 includes a housing 1100, a pressure transmission disk 1200, a guide rod 1300, an elastic spring 1400, a pressure adjustment rod 1500, and a stopper ( 1600).

The housing 1100 has a predetermined shape, and a first internal space 1110 and a second internal space 1120 are formed therein. The first internal space 1110 and the second internal space 1120 are filled with working

fluids

21 and 22. Hereinafter, for convenience of explanation, the working fluid 21 filled in the first internal space 1110 will be referred to as the first working fluid, and the working fluid 22 filled in the second internal space 1120 will be referred to as the second working fluid. It is called.

The first internal space 1110 and the second internal space 1120 may have different volumes. According to one example, the first internal space 1110 may have a larger volume than the second internal space 1120. And the first internal space 1110 may have a larger width than the second internal space 1120 on the XY plane. The second internal space 1120 may have a greater height than the first internal space 1110 in the Z-axis direction. That is, the second internal space 1120 may have a smaller area and a higher height than the first internal space 1110.

A first inlet 1130 and a second inlet 1140 are formed on one side wall of the housing 1100. The first inlet 1130 is connected to the first working fluid supply line 2500, and the first working fluid 21 supplied through the first working fluid supply line 2500 is operated by the front wheel brake lever 2100. A passage flowing into the first internal space (1110) is provided.

The second inlet 1140 is connected to the second working fluid supply line 2600, and the first working fluid 21 supplied through the second working fluid supply line 2600 is operated by the rear wheel brake lever 2200. A passage flowing into the first internal space (1110) is provided.

The first inlet 1130 and the second inlet 1140 are located at different points on one side wall of the housing 1100 and may be located at the same height in the Z-axis direction.

A first outlet 1150 and a second outlet 1160 are formed on the other side wall of the housing 1100.

The first outlet 1150 provides a passage through which the first working fluid 21 filled in the first internal space 1110 flows out to the rear brake line 2700. The first working fluid 21 flowing out through the first outlet 1150 is delivered to the rear brake pad 2400 through the rear brake line 2700. According to the embodiment, the first outlet 1150 is located at the same height as the first inlet 1150 and the second inlet 1160 in the Z-axis direction.

The second outlet 1160 provides a passage through which the second working fluid 22 filled in the second internal space 1120 flows out to the front wheel brake line 2800. The second working fluid 22 flowing out through the second outlet 1160 is delivered to the front wheel brake pad 2300 through the front wheel brake line 2800. According to the embodiment, the second outlet 1160 is located at a different height from the first inlet 1130 and the second inlet 1140 in the Z-axis direction.

The pressure transmission disk 1200 is a thin disk having a diameter corresponding to the inner diameter of the second inner space 1120, and is located between the first inner space 1110 and the second inner space 1120. The pressure transmission disk 1200 divides the first internal space 1110 and the second internal space 1120. The first working fluid 21 filled in the first internal space 1110 and the second working fluid 22 filled in the second internal space 1120 can be separated by the pressure transfer disk 1200.

The guide rod 1300 is provided with a predetermined length and is coupled to one side of the pressure transmission disk 1200. The guide rod 1300 is disposed perpendicular to one side of the pressure transmission disk 1200 in its longitudinal direction.

The elastic spring 1400 is located in the second internal space 1120, and the guide rod 1300 is inserted inside. The elastic spring 1400 generates elastic force by contracting and expanding as the pressure transmission disk 1200 moves in the Z-axis direction.

The pressure control rod 1500 is inserted into the screw hole 1180 formed on the upper surface of the housing 1100. A screw thread 1510 is formed on the outer peripheral surface of the pressure control rod 1500 and is screwed to the housing 1100. The upper end of the pressure control rod 1500 is located outside the housing 1100, and the lower end is located in the second internal space 1120. The lower end of the pressure control rod 1500 contacts the upper end of the elastic spring 1400. When the pressure control rod 1500 is rotated, the height of the lower end is adjusted depending on the direction of rotation. When the height of the lower end is lowered, the distance between the lower end of the pressure control rod 1500 and the pressure transmission disk 1200 becomes closer, and the elastic spring 1400 is compressed. As a result, the elastic force of the elastic spring 1400 increases. In contrast, when the height of the lower end increases, the distance between the lower end of the pressure control rod 1500 and the pressure transmission disk 1200 increases, and the elastic spring 1400 expands. As a result, the elastic force of the elastic spring 1400 decreases. In this way, the elastic force of the elastic spring can be adjusted by adjusting the pressure control rod 1500.

A groove 1520 is formed on the bottom of the pressure control rod 1500. The groove 1520 is formed inward from the bottom of the pressure control rod 1500 to a predetermined depth. The diameter of the groove 1520 may correspond to or be slightly larger than the diameter of the guide rod 1300. The upper end of the guide rod 1300 is inserted into the groove 1520.

A through hole 1530 is formed in the pressure control rod 1500. The through hole 1530 serves as a passage connecting the groove 1520 and the external space. The through hole 1530 can be opened and closed by the stopper 1600. The through hole 1530 provides a passage for replenishing the second working fluid 22 when the second working fluid 22 is not sufficiently filled in the second internal space 1120 of the housing 1100 due to oil leakage. to provide. In addition, when the second working fluid 22 is excessively filled or bubbles are generated in the second internal space 1120 of the housing 1100, the through hole 1530 releases the second working fluid 22 or bubbles to the outside. Provides a passage for discharge.

7 and 8 are diagrams sequentially showing the operation process of a sequential braking device according to another embodiment of the present invention. In this embodiment, the operation process of the sequential braking device 1000 according to the operation of the front wheel brake lever 2100 is described. However, when the rear wheel brake lever 2200 is operated, the sequential braking device 1000 of the hydraulic brake is operated in the same operation process. ) can work.

First, referring to FIG. 7, when the user pulls the front wheel brake lever 2100, the first working fluid 21 flows into the first inlet 1130 through the first working fluid supply line 2500, and the first working fluid 21 flows into the first inlet 1130 through the first working fluid supply line 2500. 1 A portion of the first working fluid 23 filled in the first internal space 1110 due to the pressure of the working fluid 21 flows into the rear brake line 2700 through the first outlet 1150, and is connected to the rear brake pad. It is transmitted to (2400) side. The rear brake pad 2400 generates braking force on the rear wheel by the pressure of the first operating fluid 23.

Referring to FIG. 8, when the first working fluid 23 sufficiently flows into the rear brake pad 2400 and the force of the working fluid in the rear brake line 2700 is maximized, the internal pressure of the rear brake line 2700 increases. As a result, the first operating fluid 21 does not additionally flow into the rear wheel brake line 2700. Due to this, the pressure within the first internal space 1110 gradually increases, and the first working fluid 21 moves by pushing the pressure transfer disk 1200 toward the second internal space 1120 due to the increased pressure. As the pressure transmission disk 1200 moves, a portion of the second working fluid 24 filled in the second internal space 1120 flows out to the front wheel brake line 2800 through the second outlet 1160 and the current brake line. It is transmitted to the front wheel brake pad (2300) through (2800). Accordingly, the front wheel brake pad 2300 generates braking force on the front wheel using the pressure of the second operating fluid 24. In this way, the sequential braking device according to an embodiment of the present invention can sequentially brake the front wheels after braking the rear wheels with sufficient force.

Meanwhile, when the user releases the force pulling the front wheel brake lever 2100, the first working fluid 23 delivered to the rear brake pad 2400 flows back into the first internal space 1110, and Some of the first working fluid 21 filling 1110 flows into the first working fluid supply line 2500. As a result, the pressure of the first internal space 1110 is lowered to its original size, and the pressure transmission disk 1200 moves toward the first internal space 1110. And, as the second working fluid 24 delivered to the front wheel brake pad 2300 flows back into the second internal space 1120, the braking force generated on the front wheel brake pad 2300 and the rear brake pad 2400 is released. .

As described above, the hydraulic brake sequential braking device 1000 according to the present invention always directs the first operating fluid 23 toward the rear wheel brake pad 2400 when the front brake lever 2100 and the rear brake lever 2200 are operated. ) is supplied first, and then the second operating fluid 24 is supplied to the front wheel brake pad 2300. Therefore, braking force may first be generated with sufficient force on the rear wheels and then sequentially on the front wheels.

Above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted in accordance with the appended claims. Additionally, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The sequential braking device according to embodiments of the present invention can be used as a braking device for two-wheeled vehicles including bicycles, electric bicycles, scooters, motorcycles, and electric kickboards.

Claims

A housing having a first internal space and a second internal space filled with a working fluid;

a rear-wheel brake line connecting a first outlet formed in the first internal space and a rear-wheel brake module; and

It includes a front wheel brake line connecting the second outlet formed in the second internal space and the front wheel brake module,

When the brake lever is operated, a part of the working fluid filled in the first internal space flows into the rear wheel brake line, the other part moves to the second internal space, and the working fluid filled in the second internal space flows into the front wheel brake line. Sequential braking device fed into the brake line.
According to claim 1,

A sequential braking device in which, when the force of the working fluid in the rear wheel brake line becomes maximum, another part of the working fluid filled in the first internal space moves to the second internal space.
According to claim 1,

A sequential braking device wherein the first internal space has a larger volume than the second internal space.
According to claim 1,

A first connection passage connecting the first internal space and the second internal space is formed in the housing,

a first piston located within the first internal space and movable in the first internal space;

a second piston located within the second internal space and movable by the working fluid flowing from the first internal space through the first connection passage;

a first elastic spring located within the first internal space and compressed as the first piston moves; and

It is located within the second internal space and includes a second elastic spring that is compressed according to the movement of the second piston,

When the brake lever is operated, the first piston moves toward the first outlet, and some of the working fluid filled in the first internal space flows into the rear wheel brake line, and the other part flows into the first connection passage. A sequential braking device that flows into the second internal space and pushes the second piston toward the second outlet.
According to claim 4,

An operating rod is formed at the rear end of the first piston,

A sequential braking device wherein one end of the operating rod is coupled to the brake lever.
According to claim 4,

The first elastic spring is located between the first piston and the first outlet within the first internal space,

The second elastic spring is a sequential braking device located between the second piston and the second outlet within the second internal space.
According to claim 4,

The housing includes a third internal space filled with the working fluid, a second connection passage connecting the third internal space and the first internal space, and a second connection passage connecting the third internal space and the second internal space. 3 More connected channels are formed,

A sequential braking device wherein the central axis of the third internal space is located higher than the central axes of the first internal space and the second internal space.
According to claim 4,

One end of the first connection passage is connected to the first internal space in a region between the first outlet and the first piston, and the other end is on a side opposite to the second outlet with the second piston in between. A sequential braking device connected to the second internal space.