Oil pressure self-balancing brake handle, oil pressure disc brake and bicycle

Abstract

The utility model relates to an oil pressure self-balancing brake handle, an oil pressure disc brake and a bicycle. The oil pressure self-balancing brake crank comprises a pump body, a rotating base part is formed at one end of the pump body, an oil cylinder cavity with a single open end and an oil pool cavity with a single open end are formed in the pump body, the oil cylinder cavity is communicated with the oil pool cavity through at least one communicating hole, the oil pool cavity and the oil cylinder cavity are filled with brake oil, and the oil pool cavity is communicated with the rotating base part. The oil cylinder cavity is radially communicated with an oil outlet; the brake handle piece is rotationally assembled on the rotating base part through a brake handle rotating shaft; the first end of the oil pressure driving part is movably assembled in the oil cylinder cavity, and the second end of the oil pressure driving part is movably connected with the brake handle part, so that brake oil in the oil cylinder cavity is driven to be output to the oil outlet when the brake handle part moves; and the oil pressure balancing piece is arranged in the oil pool cavity so as to supplement brake oil into the oil cylinder cavity during brake action and balance brake oil pressure. According to the utility model, the piston body is movably assembled in the oil pool cavity and is matched with the brake handle pump body, so that the oil pressure self-balance of oil in a brake system is effectively realized, and the stable brake effect of an oil pressure disc brake is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle brake devices, in particular to a hydraulic self-balancing brake handle, a hydraulic disc brake and a bicycle. Background Art

[0002] Hydraulic disc brakes use oil as a medium. Applying force to the brake lever pushes a piston inside to compress the oil. This pressure is then transferred directly through the oil pipe to the caliper, pushing the piston inside the caliper, which in turn drives the brake pads to clamp the disc, achieving braking. However, when a hydraulic disc brake is applied, the oil inside conducts heat from the brake pads, causing them to expand. This increased volume of oil can push the brake pads outward, bringing them into contact with the disc, and risk causing the disc to lock.

[0003] In existing technology, after a period of use, as the brake pads wear, hydraulic disc brakes require more brake fluid pressure to advance the piston in the brake pump to brake. Insufficient brake fluid pressure can cause brake failure. Furthermore, frictional heat is transferred to the brake fluid, causing the heated fluid to expand within the brake system and compress the piston in the brake pump, preventing it from returning to its original position, leading to brake lock. Both of these issues require consideration of fluid self-balancing to achieve pressure balance within the brake system. To this end, we propose a hydraulic self-balancing brake handle, a hydraulic disc brake, and a bicycle. Utility Model Content

[0004] The present application provides a hydraulic self-balancing brake handle, a hydraulic disc brake and a bicycle, which at least solve the problem in the prior art that as the brake pads wear, insufficient brake oil pressure will cause brake failure; and the friction heat of the brake is transmitted to the brake oil, and the heated oil expands in the brake system, pressing the brake pump so that it cannot reset, thereby causing the brakes to lock, all of which require balancing the oil pressure in the brake system.

[0005] In a first aspect, the present application provides a hydraulic self-balancing brake handle, comprising:

[0006] A pump body having a rotating base formed at one end thereof and having a single-end open oil cylinder chamber and a single-end open oil pool chamber defined therein, the oil cylinder chamber and the oil pool chamber being connected via at least one communicating hole, the oil pool chamber and the oil cylinder chamber containing brake fluid, and an oil outlet being radially connected to the oil cylinder chamber;

[0007] a brake handle member, which is rotatably assembled on the rotating base via a brake handle shaft;

[0008] a hydraulic driving member, a first end of which is movably mounted in the oil cylinder cavity and a second end of which is movably connected to the brake handle member, so as to drive the brake fluid in the oil cylinder cavity to be discharged toward the oil outlet when the brake handle member moves;

[0009] The oil pressure balance member is arranged in the oil pool cavity to replenish brake oil into the oil cylinder cavity during braking action to balance the brake oil pressure.

[0010] Optionally, the oil pressure balancing member includes:

[0011] a piston body movably assembled in the oil pool cavity;

[0012] a second piston ring, which is fixedly sleeved on the annular side wall of the piston body, and the annular outer wall of the second piston ring abuts and seals against the inner wall of the oil pool cavity;

[0013] The oil pool cavity cover is fixedly assembled on the open end of the oil pool cavity through a cotter pin, and a balancing hole communicating with the external atmospheric pressure is opened on the oil pool cavity cover.

[0014] Optionally, the hydraulic drive component includes:

[0015] An oil cylinder cavity cover, which is fixedly assembled to the open end of the oil cylinder cavity by a cotter pin;

[0016] a driving rod, a first end of which is movably connected to the brake handle, and a second end of which passes through the oil cylinder cavity and extends into the oil cylinder cavity;

[0017] a piston rod, movably assembled in the oil cylinder cavity, and having a first end movably connected to the second end of the driving rod;

[0018] a first piston ring, which is fixedly sleeved on the annular side wall of the piston column, and the annular outer wall of the first piston ring abuts and seals against the inner wall of the cylinder cavity;

[0019] An elastic member is arranged at a side of the oil cylinder cavity away from the opening and is respectively connected to the second end of the piston rod and the inner wall of the oil cylinder cavity.

[0020] Optionally, the hydraulic drive member is further provided with a grip torque adjustment member, and the grip torque adjustment member includes:

[0021] a connecting column movably assembled on the brake handle, having a rod hole with an internal thread formed therein, the second end of the driving rod passing through the rod hole, and the external thread formed on the driving rod being threadably matched with the internal thread;

[0022] An adjusting button is threadedly fixed to the second end of the driving rod to adjust the connection position of the driving rod and the connecting column.

[0023] Optionally, the side thread of the adjusting button is assembled with a hexagon socket screw for locking the adjusting button and the driving rod in a fixed position.

[0024] Optionally, the connecting column and the brake handle shaft are both equipped with ball bearings, and the outer end surfaces of the ball bearings are fixed to the brake handle member.

[0025] Optionally, a locking member for fixing to a vehicle handle is provided on a side of the pump body away from the rotating base, and the locking member includes:

[0026] There are two locking base parts, which are symmetrically arranged at both ends of one side of the pump body away from the rotating base;

[0027] Two half-side buckle bodies, the lower parts of which are connected by an adjusting bolt to form a U-shaped buckle body, and the two free ends of the U-shaped buckle body are movably connected to the two locking base parts through movable bolts;

[0028] The second contact portion is formed on the inner side of the half buckle body so as to abut against the vehicle handlebar when the locking member is assembled with the vehicle handlebar.

[0029] Optionally, the end of the pump body away from the rotating base is further formed with a first contact portion that abuts against the vehicle handlebar when assembled with the vehicle handlebar.

[0030] In a second aspect, the present application provides a hydraulic disc brake, comprising the hydraulic self-balancing brake handle described in the first aspect, and:

[0031] An oil pipe, a first end of which is connected to the oil outlet, and a second end of which is connected to a brake pump mounted on the front / rear wheel of the vehicle frame;

[0032] There are two brake lower pumps, which are respectively assembled at the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

[0033] In a third aspect, the present application provides a bicycle comprising the hydraulic self-balancing brake handle described in the first aspect, or the hydraulic disc brake described in the second aspect.

[0034] Compared with related technologies, the hydraulic self-balancing brake handle, hydraulic disc brake, and bicycle provided by this application have at least the following technical effects:

[0035] The piston body is assembled in the oil sump cavity and the stroke is limited by the oil sump cavity cover. As the brake pads wear, more oil is needed for braking. During the braking process, the brake oil in the oil sump cavity automatically replenishes the oil in the cylinder cavity where the pressure decreases. Pushed by atmospheric pressure, the piston body gradually moves to the other side, thereby maintaining sufficient oil in the brake system for braking.

[0036] When braking, the brake fluid conducts heat from the brake pads and expands due to the heat. The expanded brake fluid enters the oil sump cavity in the cylinder cavity, pushing the piston body in the oil sump cavity toward the side of the oil sump cavity cover to achieve pressure balance, thereby avoiding the risk of disc locking, and then achieving self-balancing of the oil pressure in the double-level brake system, maintaining and optimizing the smooth braking effect of the hydraulic disc brake.

[0037] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 1 is a front schematic diagram of a hydraulic self-balancing brake handle according to an exemplary embodiment.

[0040] Figure 2 It is a front perspective schematic diagram of a hydraulic self-balancing brake handle according to an exemplary embodiment.

[0041] Figure 3 It is a schematic perspective view of the back side of a hydraulic self-balancing brake handle according to an exemplary embodiment.

[0042] Figure 4 The figure is a schematic cross-sectional view of the three-dimensional structure of a hydraulic self-balancing brake handle according to an exemplary embodiment.

[0043] Figure 5 1 is an exploded view of a hydraulic self-balancing brake handle structure according to another exemplary embodiment.

[0044] Description of reference numerals: pump body 10; oil cylinder cavity 101; oil outlet 102; rotating base 103; first contact portion 104; oil pool cavity 105; communicating hole 106;

[0045] Ball bearing 20; brake handle 30; brake handle shaft 301;

[0046] Hydraulic drive member 40; piston column 401; first piston ring 402; elastic member 403; cylinder chamber cover 404; drive rod 405; grip torque adjustment member 406; adjustment button 4061; connecting column 4062; rod position hole 4063;

[0047] Locking member 50; half buckle body 501; movable bolt 502; locking base portion 503; locking bolt 504; second contact portion 505;

[0048] Oil pressure balance member 60; piston body 601; second piston ring 602; oil pool cavity cover 603. DETAILED DESCRIPTION

[0049] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0052] In related technologies, after the hydraulic disc brake has been used for a period of time, as the brake pads wear, the piston in the brake lower pump will need more brake oil pressure to push forward to brake. Insufficient brake oil pressure will cause brake failure. In addition, the friction heat of the brake will be transferred to the brake oil. The heated oil will expand in volume in the brake system and press the piston in the brake lower pump so that it cannot be reset, which will lead to the problem of brake locking. Both aspects require consideration of oil self-balancing to achieve pressure balance in the brake system.

[0053] Based on the above situation, the embodiments of the present invention provide a hydraulic self-balancing brake handle, a hydraulic disc brake and a bicycle, which are described in detail below with reference to specific embodiments and drawings.

[0054] Example 1

[0055] The embodiment of the utility model provides a hydraulic self-balancing brake handle. Figure 1 It is a front schematic diagram of a hydraulic self-balancing brake handle according to an exemplary embodiment. Figure 2 It is a front perspective schematic diagram of a hydraulic self-balancing brake handle according to an exemplary embodiment. Figure 3 FIG. 1 is a perspective diagram of the back of a hydraulic self-balancing brake handle according to an exemplary embodiment. Figure 1-3 As shown, the hydraulic self-balancing brake handle includes:

[0056] The pump body 10 has a rotating base 103 formed at one end thereof, and defines therein a single-end open cylinder chamber 101 and a single-end open oil sump chamber 105. The cylinder chamber 101 and the oil sump chamber 105 are connected by at least one communication hole 106. The oil sump chamber 105 and the cylinder chamber 101 contain brake fluid, and the cylinder chamber 101 is radially connected to an oil outlet 102.

[0057] The brake handle 30 is rotatably mounted on the rotating base 103 via a brake handle shaft 301;

[0058] The hydraulic drive member 40 has a first end movably mounted in the oil cylinder chamber 101 and a second end movably connected to the brake lever member 30, so that when the brake lever member 30 moves, the brake fluid in the oil cylinder chamber 101 is driven to be discharged to the oil outlet 102 to brake the vehicle. Specifically, it is also necessary to cooperate with: an oil pipe, a first end of which is connected to the oil outlet 102, and a second end of which is connected to a brake lower pump mounted on the front / rear wheel of the bicycle frame to apply hydraulic pressure to the disc; two brake lower pumps, which are respectively mounted on the front / rear wheel of the bicycle frame and are arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply hydraulic pressure to the disc.

[0059] The oil pressure balance member 60 is disposed in the oil pool chamber 105 to replenish the brake oil into the cylinder chamber during the braking operation to balance the brake oil pressure. Figure 4 The figure is a schematic cross-sectional view of the three-dimensional structure of a hydraulic self-balancing brake handle according to an exemplary embodiment. Figure 5 FIG is an exploded view of a hydraulic self-balancing brake handle structure according to another exemplary embodiment. Figure 4-5 , the oil pressure balance member 60 includes:

[0060] The piston body 601 is movably assembled in the oil pool chamber 105;

[0061] The second piston ring 602 is fixedly mounted on the annular side wall of the piston body 601, and the annular outer wall of the second piston ring 602 abuts and seals against the inner wall of the oil pool cavity 105;

[0062] The oil pool chamber cover 603 is fixedly assembled to the open end of the oil pool chamber 105 by a cotter pin, and a balancing hole communicating with the external atmospheric pressure is opened on the oil pool chamber cover 603.

[0063] In the technical solutions of the above embodiments, refer to the attached Figure 4 In the initial state, the brake lever 30 is not braking, and the piston body 601 is located on the side of the oil pool chamber 105 near the open end and is limited by the oil pool chamber cover 603. As the brake pads wear, more oil is needed for braking. During the braking process, the brake oil in the oil pool chamber 105 automatically replenishes into the cylinder chamber 101 where the pressure decreases. Driven by atmospheric pressure, the piston body 601 gradually moves to the other side, thereby maintaining sufficient oil in the brake system for braking.

[0064] It is understandable that during long-term use, as the brake pads wear, the brake fluid in the oil pool cavity 105 can automatically replenish the oil cylinder cavity 101 where the pressure is reduced, so that an expansion margin will gradually be formed between the piston body 601 and the oil pool cover 205. When braking, the brake fluid will conduct the heat of the brake pads and expand due to the heat. The volume-expanded brake fluid can enter the oil pool cavity 105 through the connecting hole 106 in the oil cylinder cavity 101 to achieve pressure balance, thereby avoiding the risk of disc locking and maintaining and optimizing the smooth braking effect of the hydraulic disc brake; at this time, the brake fluid entering the oil pool cavity 105 will push the piston body 601 to move in the oil pool cavity 105 toward the side of the oil pool cavity cover 603 to accommodate the expansion volume required by the brake fluid; when the temperature of the brake fluid drops, its volume shrinks and automatically flows back to the oil cylinder cavity 101 where the pressure is reduced, and the piston body 301 is also gradually restored to its original position under the action of the external atmospheric pressure as the brake fluid flows back.

[0065] It is further understood that when the hydraulic self-balancing brake handle is installed on a vehicle, a certain expansion margin can be directly provided between the piston body 601 and the oil pool cavity cover 603 .

[0066] In this embodiment, continue to refer to the attached Figure 4-5 , the hydraulic drive element 40 includes:

[0067] The oil cylinder chamber cover 404 is fixedly assembled to the open end of the oil cylinder chamber 101 by a cotter pin;

[0068] A driving rod 405 , a first end of which is movably connected to the brake handle 30 , and a second end of which passes through the cylinder cavity 101 and extends into the cylinder cavity 101 ;

[0069] The piston rod 401 is movably assembled in the cylinder chamber 101, and its first end is movably connected to the second end of the driving rod 405;

[0070] The first piston ring 402 is fixedly mounted on the annular side wall of the piston column 401, and the annular outer wall of the first piston ring 402 is in abutment and sealed against the inner wall of the cylinder cavity 101;

[0071] The elastic member 403 is disposed on a side of the oil cylinder cavity 101 away from the opening and is respectively connected to the second end of the piston rod 401 and the inner wall of the oil cylinder cavity.

[0072] In the technical solution of the above embodiment, when installed on a bicycle, a single hydraulic self-balancing brake lever is used in conjunction with an oil pipe and a brake pump. Specifically, the first end of the oil pipe is connected to the oil outlet 104 through an oil pipe joint, and the second end is connected to the brake pump assembled at the front / rear wheel of the bicycle frame.

[0073] When the brake lever 30 is squeezed, the driving rod 405 pushes the piston column 401 and the first piston ring 402 to move in the cylinder cavity 101 and drives the brake fluid to be output through the oil outlet 104, and then enters the brake pump at the front / rear wheel through the oil pipe. The brake pump clamps the disc of the front / rear wheel for hydraulic braking. The oil circuit is smooth and the braking is stable.

[0074] In this embodiment, continue to refer to the attached Figure 5 Furthermore, the hydraulic drive member 40 is further provided with a gripping torque adjusting member 406, which includes:

[0075] The connecting post 4062 is movably mounted on the brake handle 30 and has a rod hole 4063 with an internal thread. The second end of the driving rod 405 passes through the rod hole 4063, and the external thread on the driving rod 405 is threadably engaged with the internal thread.

[0076] The adjusting button 4061 is threadedly fixed to the second end of the driving rod 405 to adjust the connection position between the driving rod 405 and the connecting column 4062; Figure 3 The side thread of the adjusting button 4061 is equipped with a hexagon socket screw for locking the adjusting button 4061 and the driving rod 405 in a fixed position.

[0077] In the technical solution of the above embodiment, by rotating the adjustment button 4061, the relative length between the driving rod 405 and the connecting column 4062 can be adjusted accordingly, and then the grip angle of the brake handle 30 can be adjusted, so as to perform personalized and practical adjustments to meet the user's different grip feel requirements and enhance the user experience.

[0078] In this embodiment, continue to refer to the attached Figure 5 The connecting column 4062 and the brake handle shaft 301 are both equipped with ball bearings 20, and the outer end surfaces of the ball bearings 20 are fixed to the brake handle 30, reducing the friction of the brake handle 30 when the user holds it for braking and improving the user's feel.

[0079] In this embodiment, continue to refer to the attached Figure 1-5 The pump body 10 is provided with a locking member 50 for fixing to the vehicle handlebar on one side away from the rotating base 103. The locking member 50 includes:

[0080] There are two locking base portions 503 , which are symmetrically arranged at both ends of one side of the pump body 10 away from the rotating base portion 103 ;

[0081] There are two half buckle bodies 501, the lower parts of which are connected by an adjusting bolt 504 to form a U-shaped buckle body, and the two free ends of the U-shaped buckle body are movably connected to the two locking base parts 503 through movable bolts 502;

[0082] The second contact portion 505 is formed on the inner side of the half-side buckle body 501 to abut the vehicle handlebar when the lock member 50 is assembled with the vehicle handlebar; further, the end of the pump body 10 away from the rotating base 103 is also formed with a first contact portion 104 to abut the vehicle handlebar when assembled with the vehicle handlebar.

[0083] In the technical solution of the above embodiment, during assembly, the U-shaped buckle body is inserted into the vehicle handlebar, and then the adjusting bolt 504 is tightened so that the two second contact portions 505 are in close contact with the two side surfaces of the annular side wall of the vehicle handlebar, and the first contact portion 104 is in close contact with the upper wall surface of the annular side wall of the vehicle handlebar. Compared with the traditional fixing method of the brake handle clamp lock, the contact area during fixation is larger, and the assembly and fixation of the hydraulic self-balancing brake handle is more stable and not easy to fall off or rotate.

[0084] Furthermore, the locking member 50 is detachable and replaceable through the connection of the movable bolt 502. Different models of half-buckle bodies 501 can also be replaced according to the shape and diameter of the vehicle handlebar to fully fit the vehicle handlebar, ensuring the stable assembly of the hydraulic self-balancing brake handle.

[0085] In summary, the hydraulic self-balancing brake lever provided by the embodiment of the present invention is configured such that, through the movable assembly of the piston body 601 within the oil reservoir chamber 105 and the travel limit of the oil reservoir chamber cover 603, as the brake pads wear, more oil is required for braking. During the braking process, the brake oil in the oil reservoir chamber 105 automatically flows into the cylinder chamber 101 where the pressure decreases. Driven by atmospheric pressure, the piston body 601 gradually moves to the other side, thereby maintaining sufficient oil in the brake system for braking.

[0086] During braking, the brake fluid conducts heat from the brake pads and expands due to the heat. The expanded brake fluid flows from the cylinder chamber 101 into the oil pool chamber 105, pushing the piston body 601 in the oil pool chamber 105 toward the oil pool chamber cover 603, achieving pressure balance. This avoids the risk of disc locking and maintains and optimizes the smooth braking effect of the hydraulic disc brake.

[0087] Furthermore, by rotating the adjustment button 4061, the relative length between the drive rod 405 and the connecting column 4062 can be adjusted accordingly, and then the grip angle between the brake handle 30 and the pump body 10 can be adjusted, so as to perform personalized adjustments to suit the user's different grip torque requirements and enhance the user experience.

[0088] Example 2

[0089] The second embodiment of the present invention provides a hydraulic disc brake. The hydraulic disc brake comprises the hydraulic self-balancing brake handle of the first embodiment, and:

[0090] An oil pipe, a first end of which is connected to the oil outlet 102 and a second end of which is connected to a brake pump mounted on the front / rear wheel of the vehicle frame;

[0091] There are two brake lower pumps, which are respectively assembled at the front / rear wheels of the bicycle frame and matched with the disc. The brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

[0092] For other structures not described, refer to Example 1.

[0093] Example 3

[0094] Embodiment 3 of the present invention provides a bicycle comprising the hydraulic self-balancing brake handle of embodiment 1 or the hydraulic disc brake of embodiment 2.

[0095] For other structures not described, refer to Example 1.

[0096] In summary, the hydraulic self-balancing brake handle, hydraulic disc brake, and bicycle provided by the embodiments of the present invention utilize the movable assembly of the piston body 601 within the oil reservoir chamber 105 and the travel limit of the oil reservoir chamber cover 603. As the brake pads wear, more oil is required for braking. During braking, the brake oil in the oil reservoir chamber 105 automatically flows into the cylinder chamber 101 where the pressure decreases. Driven by atmospheric pressure, the piston body 601 gradually moves to the other side, thereby maintaining a sufficient amount of oil in the brake system for braking.

[0097] During braking, the brake fluid conducts heat from the brake pads and expands due to the heat. The expanded brake fluid flows from the cylinder chamber 101 into the oil pool chamber 105, pushing the piston body 601 in the oil pool chamber 105 toward the oil pool chamber cover 603, achieving pressure balance. This avoids the risk of disc locking and maintains and optimizes the smooth braking effect of the hydraulic disc brake.

[0098] Furthermore, by rotating the adjustment button 4061, the relative length between the drive rod 405 and the connecting column 4062 can be adjusted accordingly, and then the grip angle between the brake handle 30 and the pump body 10 can be adjusted, so as to perform personalized adjustments to suit the user's different grip torque requirements and enhance the user experience.

[0099] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A hydraulic self-balancing brake handle, characterized in that: include: A pump body having a rotating base formed at one end thereof and having a single-end open oil cylinder chamber and a single-end open oil pool chamber defined therein, the oil cylinder chamber and the oil pool chamber being connected via at least one communicating hole, the oil pool chamber and the oil cylinder chamber containing brake fluid, and an oil outlet being radially connected to the oil cylinder chamber; a brake handle member, which is rotatably assembled on the rotating base via a brake handle rotating shaft; a hydraulic driving member, a first end of which is movably mounted in the oil cylinder cavity and a second end of which is movably connected to the brake handle member, so as to drive the brake fluid in the oil cylinder cavity to be discharged toward the oil outlet when the brake handle member moves; The oil pressure balance member is arranged in the oil pool cavity to replenish brake oil into the oil cylinder cavity during braking action to balance the brake oil pressure.

2. The hydraulic self-balancing brake handle according to claim 1, characterized in that: The oil pressure balancing member includes: a piston body movably assembled in the oil pool cavity; a second piston ring, which is fixedly sleeved on the annular side wall of the piston body, and the annular outer wall of the second piston ring abuts and seals against the inner wall of the oil pool cavity; The oil pool cavity cover is fixedly assembled on the open end of the oil pool cavity through a cotter pin, and a balancing hole communicating with the external atmospheric pressure is opened on the oil pool cavity cover.

3. The hydraulic self-balancing brake handle according to claim 1, characterized in that: The hydraulic drive element comprises: An oil cylinder cavity cover, which is fixedly assembled to the open end of the oil cylinder cavity by a cotter pin; a driving rod, a first end of which is movably connected to the brake handle, and a second end of which passes through the oil cylinder cavity and extends into the oil cylinder cavity; a piston rod, movably assembled in the oil cylinder cavity, and having a first end movably connected to the second end of the driving rod; a first piston ring, which is fixedly sleeved on the annular side wall of the piston column, and the annular outer wall of the first piston ring abuts and seals against the inner wall of the cylinder cavity; An elastic member is arranged at a side of the oil cylinder cavity away from the opening and is respectively connected to the second end of the piston rod and the inner wall of the oil cylinder cavity.

4. The hydraulic self-balancing brake handle according to claim 3, characterized in that: The hydraulic drive member is further provided with a grip torque adjustment member, which includes: a connecting column movably assembled on the brake handle, having a rod hole with an internal thread formed therein, the second end of the driving rod passing through the rod hole, and the external thread formed on the driving rod being threadably matched with the internal thread; An adjusting button is threadedly fixed to the second end of the driving rod to adjust the connection position of the driving rod and the connecting column.

5. The hydraulic self-balancing brake handle according to claim 4, characterized in that: The side thread of the adjusting button is equipped with a hexagon socket screw for locking the adjusting button and the driving rod in a fixed position.

6. The hydraulic self-balancing brake handle according to claim 4, characterized in that: The connecting column and the brake handle rotating shaft are both equipped with ball bearings, and the outer end surfaces of the ball bearings are fixed to the brake handle component.

7. The hydraulic self-balancing brake handle according to claim 1, characterized in that: A locking member for fixing to a vehicle handle is provided on one side of the pump body away from the rotating base, and the locking member includes: There are two locking base parts, which are symmetrically arranged at both ends of one side of the pump body away from the rotating base; Two half-side buckle bodies, the lower parts of which are connected by an adjusting bolt to form a U-shaped buckle body, and the two free ends of the U-shaped buckle body are movably connected to the two locking base parts through movable bolts; The second contact portion is formed on the inner side of the half buckle body so as to abut against the vehicle handlebar when the locking member is assembled with the vehicle handlebar.

8. The hydraulic self-balancing brake handle according to claim 7, characterized in that: The end of the pump body away from the rotating base is further formed with a first contact portion that abuts against the vehicle handlebar when assembled with the vehicle handlebar.

9. A hydraulic disc brake, characterized in that: It comprises the hydraulic self-balancing brake handle according to any one of claims 1 to 8, and An oil pipe, a first end of which is connected to the oil outlet, and a second end of which is connected to a brake pump mounted on the front / rear wheel of the vehicle frame; There are two brake lower pumps, which are respectively assembled at the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc.

10. A bicycle, characterized in that: It includes the hydraulic self-balancing brake handle according to any one of claims 1 to 8, or the hydraulic disc brake according to claim 9.

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