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

Abstract

The invention 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. 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 invention relates to the technical field of bicycle brake components, and 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. The force applied to the brake handle pushes the piston inside to compress the oil. The pressure passes directly from the oil pipe to the caliper, thereby pushing the piston inside the caliper, driving the brake pad to clamp the disc and achieve braking. However, when the hydraulic disc brake is applied, the internal oil will conduct the heat of the brake pad and expand due to the heat. The expanded oil will push the brake pad outward to contact the brake disc, resulting in the risk of the disc locking.

[0003] In the prior art, after the hydraulic disc brake has been used for a period of time, as the brake pads wear out, the piston in the brake pump will need more brake fluid pressure to move forward to brake, and insufficient brake fluid pressure will cause brake failure; and the brake will also cause the friction heat of the brake to be transferred to the brake fluid, and the heated fluid will expand in the brake system and compress the piston in the brake pump so that it cannot be reset, which will lead to the problem of brake locking. Both aspects need to consider the self-balancing of the fluid to achieve the pressure balance in the brake system. To this end, we propose a hydraulic self-balancing brake handle, a hydraulic disc brake and a bicycle. Summary of the invention

[0004] The present application provides a hydraulic self-balancing brake handle, a hydraulic disc brake and a bicycle, so as to 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 be 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, one end of which is formed with a rotating base, and a single-end open oil cylinder cavity and a single-end open oil pool cavity are provided therein, the oil cylinder cavity and the oil pool cavity are connected through at least one connecting hole, the oil pool cavity and the oil cylinder cavity contain brake oil, and the oil cylinder cavity is radially connected with an oil outlet;

[0007] A brake handle member, which is rotatably mounted on the rotating base via a brake handle rotating 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 oil in the oil cylinder cavity to be output to 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 balance member includes:

[0011] A piston body, which is 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 is in abutment and sealing with 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 connected to the external atmospheric pressure is opened on the oil pool cavity cover.

[0014] Optionally, the hydraulic drive comprises:

[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, which is movably assembled in the oil cylinder cavity and has 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 is in abutment and sealing with the inner wall of the oil cylinder cavity;

[0019] The 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 comprises:

[0021] A connecting column, which is movably assembled on the brake handle, and has a rod hole with an internal thread, through which the second end of the driving rod passes, and the external thread on the driving rod is 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 equipped 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 handlebar is provided on a side of the pump body away from the rotating base, and the locking member comprises:

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

[0027] Two half 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 and the vehicle handlebar are assembled.

[0029] Optionally, one 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 at the front / rear wheel of the vehicle frame;

[0032] There are two brake lower pumps, which are respectively mounted on 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 the related art, the hydraulic self-balancing brake handle, hydraulic disc brake and bicycle provided by the present application have at least the following technical effects:

[0035] Through the movable assembly of the piston body in the oil pool cavity and the limited stroke through the oil pool cavity cover, as the brake pads wear, more oil is needed for braking. At this time, during the braking process, the brake oil in the oil pool cavity automatically replenishes the oil in the cylinder cavity with reduced pressure. Driven by the 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 pool cavity in the cylinder cavity, pushing the piston body in the oil pool cavity toward the side of the oil pool 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] 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 present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It 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 three-dimensional back view of a hydraulic self-balancing brake handle according to an exemplary embodiment.

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

[0043] Figure 5 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 member 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; gripping 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 chamber cover 603. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the related art, after the hydraulic disc brake has been used for a period of time, as the brake pads wear, the piston in the brake pump will need more brake fluid pressure to push forward to brake, and insufficient brake fluid pressure will cause brake failure; and braking will also result in the conduction of brake friction heat to the brake fluid, and the heated fluid will expand in volume in the brake system, pressing the piston in the brake pump so that it cannot reset, thereby causing the brakes to lock. Both aspects require consideration of oil self-balancing to achieve pressure balance in the brake system.

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

[0054] Example 1

[0055] An embodiment of the present invention 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 side 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 has a single-end open oil cylinder chamber 101 and a single-end open oil pool chamber 105 formed therein, the oil cylinder chamber 101 and the oil pool chamber 105 are connected through at least one connecting hole 106, the oil pool chamber 105 and the oil cylinder chamber 101 contain brake oil, and the oil cylinder chamber 101 is radially connected with an oil outlet 102;

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

[0058] The hydraulic driving 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 as to drive the brake oil in the oil cylinder chamber 101 to be output to the oil outlet 102 to brake the vehicle when the brake lever member 30 moves; specifically, it also needs 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 matched 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 brake oil into the oil cylinder chamber during braking to balance the brake oil pressure. Figure 4 The figure is a schematic cross-sectional view of a three-dimensional structure of a hydraulic self-balancing brake handle according to an exemplary embodiment. Figure 5 FIG. 1 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 comprises:

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

[0061] The second piston ring 602 is fixedly sleeved on the annular side wall of the piston body 601, and the annular outer wall of the second piston ring 602 is in abutment and sealed with 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 split pin, and a balancing hole communicating with the external atmospheric pressure is provided on the oil pool chamber cover 603 .

[0063] In the technical solution of the above embodiment, refer to the attached Figure 4 In the initial state, the brake lever 30 is not braked, the piston body 601 is on the side close to the opening end in the oil pool chamber 105 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 the oil in the cylinder chamber 101 where the pressure is reduced. Driven by the 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 oil in the oil pool cavity 105 can automatically replenish the oil cylinder cavity 101 with reduced pressure, so that an expansion margin will gradually form between the piston body 601 and the oil pool cover 205. When braking, the brake oil will conduct the heat of the brake pads and expand due to the heat. The volume-expanded brake oil 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 stable braking effect of the hydraulic disc brake; at this time, the brake oil 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 oil; when the temperature of the brake oil decreases, its volume decreases and automatically flows back to the oil cylinder cavity 101 with reduced pressure, and the piston body 301 is also gradually restored to its original position under the action of the external atmospheric pressure as the brake oil flows back.

[0065] It is further understandable 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 chamber cover 603 .

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

[0067] The oil cylinder chamber cover 404 is fixedly assembled to the open end of the oil cylinder chamber 101 by a split 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 oil cylinder cavity 101 and extends into the oil cylinder cavity 101;

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

[0070] The first piston ring 402 is fixedly sleeved 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 at 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 handle is used in conjunction with an oil pipe and a brake pump. Specifically, a first end of the oil pipe is connected to the oil outlet 104 through an oil pipe joint, and a 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 chamber 101 and drive 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 driving member 40 is also provided with a gripping moment adjusting member 406, and the gripping moment adjusting member 406 includes:

[0075] The connecting column 4062 is movably assembled 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 threadedly matched 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 adjusting 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 different grip feel requirements of users 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, thereby reducing the friction of the brake handle 30 when the user holds the brake and improving the user's hand feeling.

[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 with the vehicle handlebar on one side away from the rotating base 103, and the locking member 50 includes:

[0080] There are two locking base parts 503, which are symmetrically arranged at two ends of one side of the pump body 10 away from the rotating base 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 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, and different types of half-buckle bodies 501 can be replaced according to the shape and diameter of the vehicle handlebar to fully fit the vehicle handlebar, thereby ensuring the stable assembly of the hydraulic self-balancing brake handle.

[0085] In summary, the hydraulic self-balancing brake handle provided by the embodiment of the present invention is assembled by the piston body 601 in the oil pool chamber 105 and limits the stroke through 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 the oil in the oil cylinder chamber 101 with reduced pressure. Driven by the atmospheric pressure, the piston body 601 gradually moves to the other side, thereby maintaining sufficient oil in the brake system for braking.

[0086] When braking, the brake fluid conducts the heat of the brake pad and expands due to the heat. The expanded brake fluid enters the oil pool chamber 105 in the oil cylinder chamber 101, pushing the piston body 601 in the oil pool chamber 105 toward the oil pool chamber cover 603 to achieve pressure balance, thereby avoiding the risk of disc locking and maintaining and optimizing the stable 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 meet the different grip feel requirements of users and enhance user experience.

[0088] Example 2

[0089] Embodiment 2 of the present invention provides a hydraulic disc brake. The hydraulic disc brake comprises the hydraulic self-balancing brake handle of embodiment 1 above, 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 at the front / rear wheel of the vehicle frame;

[0091] There are two brake lower pumps, which are respectively mounted on 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.

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

[0093] Example 3

[0094] Embodiment 3 of the present invention provides a bicycle, which includes 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 embodiment of the present invention are assembled movably by the piston body 601 in the oil pool chamber 105 and limit the stroke by the oil pool chamber cover 603. As the brake pads wear, more oil needs to be replenished for braking. At this time, during the braking process, the brake oil in the oil pool chamber 105 automatically replenishes the oil in the oil cylinder chamber 101 with reduced pressure. Driven by the atmospheric pressure, the piston body 601 gradually moves to the other side, thereby maintaining sufficient oil in the brake system for braking.

[0097] When braking, the brake fluid conducts the heat of the brake pad and expands due to the heat. The expanded brake fluid enters the oil pool chamber 105 in the oil cylinder chamber 101, pushing the piston body 601 in the oil pool chamber 105 toward the oil pool chamber cover 603 to achieve pressure balance, thereby avoiding the risk of disc locking and maintaining and optimizing the stable 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 meet the different grip feel requirements of users and enhance user experience.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A hydraulic self-balancing brake handle, characterized in that: include: A pump body, one end of which is formed with a rotating base, and a single-end open oil cylinder cavity and a single-end open oil pool cavity are provided therein, the oil cylinder cavity and the oil pool cavity are connected through at least one connecting hole, the oil pool cavity and the oil cylinder cavity contain brake oil, and the oil cylinder cavity is radially connected with an oil outlet; 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 oil in the oil cylinder cavity to be output to 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 balance member comprises: A piston body, which is 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 is in abutment and sealing with 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 split pin, and a balancing hole connected to 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 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, which is movably assembled in the oil cylinder cavity and has 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 is in abutment and sealing with the inner wall of the oil cylinder cavity; The 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 2, characterized in that: The hydraulic drive member is also provided with a grip torque adjustment member, and the grip torque adjustment member includes: A connecting column, which is movably assembled on the brake handle, and has a rod hole with an internal thread, through which the second end of the driving rod passes, and the external thread on the driving rod is 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 member.

7. The hydraulic self-balancing brake handle according to claim 1, characterized in that: A locking member for fixing to a vehicle handlebar is provided on one side of the pump body away from the rotating base, and the locking member comprises: Two locking base parts are symmetrically arranged at two ends of one side of the pump body away from the rotating base; Two half 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 and the vehicle handlebar are assembled.

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 also 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 as described in claims 1 to 8 above, 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 at the front / rear wheel of the vehicle frame; There are two brake lower pumps, which are respectively mounted on 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 claims 1-8, or the hydraulic disc brake according to claim 9.

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