Hydraulic brake handle and bicycle

Abstract

The utility model embodiment discloses a hydraulic brake handle and a bicycle, wherein the hydraulic brake handle comprises a piston assembly, a fixing assembly and a brake assembly, wherein the piston assembly and the brake assembly are both arranged on the fixing assembly, and the brake assembly comprises a rolling element, wherein the rolling element is abutted against the tail end of the piston assembly; when the brake assembly is pressed, the rolling element pushes the piston assembly to perform a braking action, thereby simplifying the brake handle structure, reducing the difficulty of maintenance, and optimizing the direction of the resultant force to reduce the required grip force.

Description

Technical Field

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

[0002] In the existing bicycle handlebar brake technology, a two-finger or three-finger operation mode is usually adopted, which requires a large grip force to achieve effective braking. At present, there are related solutions to reduce the grip force while maintaining the braking effect by optimizing the brake lever structure and using mechanical structures such as cams and connecting rods. However, these solutions are complex in structure, greatly increase the difficulty of maintenance, and have no obvious effect on reducing the grip force. Utility Model Content

[0003] The utility model aims to provide a hydraulic brake handle and a bicycle, aiming to solve the problem in the prior art that a large gripping force is required when using a bicycle brake handle.

[0004] To solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions: providing a hydraulic brake handle, including a piston assembly, a fixed assembly and a brake assembly, the piston assembly and the brake assembly are both arranged on the fixed assembly, the brake assembly includes a rolling element, and the rolling element is abutted against the tail end of the piston assembly; when the brake assembly is pressed, the rolling element pushes the piston assembly to perform a braking action.

[0005] Furthermore, the rolling member includes a first rolling wheel and a second rolling wheel; the brake assembly also includes a brake rod, a first transmission member and a second transmission member, the brake rod is connected to the first transmission member, the first transmission member is connected to the first rolling wheel, the first rolling wheel is abutted against one side of the second transmission member, the second rolling wheel is connected to the other side of the second transmission member, and the second rolling wheel is abutted against the tail end of the piston assembly.

[0006] Further, the side of the second transmission member that abuts against the first rolling wheel is set to a concave surface, the first rolling wheel protrudes from the first transmission member and can slide on the concave surface; or, the side of the second transmission member that abuts against the first rolling wheel is set to a convex surface, the first rolling wheel protrudes from the first transmission member and can slide on the convex surface; or, the side of the second transmission member that abuts against the first rolling wheel is set to a convex surface and the convex surface extends into the first transmission member, the first rolling wheel does not protrude from the first transmission member and can slide on the convex surface.

[0007] Furthermore, the first transmission member and the brake lever are coaxially rotatably arranged on the fixing assembly, and the first transmission member and the brake lever rotate synchronously.

[0008] Furthermore, one end of the first transmission member away from the first rolling wheel is pressed against the brake rod, and a torsion spring is arranged between the first transmission member, the brake rod and the fixing assembly.

[0009] Furthermore, one end of the second transmission member away from the second rolling wheel is rotatably disposed on the fixing assembly.

[0010] Furthermore, the first rolling wheel is rotatably connected to the first transmission member, and the second rolling wheel is rotatably connected to the second transmission member.

[0011] Furthermore, the brake assembly also includes an adjusting member, an adjusting hole is opened on the brake rod, a part of the adjusting member is arranged outside the brake rod, and another part of the adjusting member passes through the adjusting hole to support the first transmission member inside the brake rod, and the preload force between the adjusting member and the first transmission member is adjusted by adjusting the length of the adjusting member extending into the adjusting hole.

[0012] Furthermore, a plurality of limiting grooves are arranged at intervals around the circumference of the adjustment hole, and a limiting protrusion is correspondingly arranged on one side of the adjustment member facing the adjustment hole, and the limiting protrusion can be switched on the plurality of limiting grooves.

[0013] The utility model also provides a bicycle, comprising the hydraulic brake handle and a handlebar as described above, wherein the hydraulic brake handle is fixed to the handlebar.

[0014] An embodiment of the utility model provides a hydraulic brake handle and a bicycle, wherein the hydraulic brake handle comprises a piston assembly, a fixing assembly and a brake assembly, wherein the piston assembly and the brake assembly are both arranged on the fixing assembly, and the brake assembly comprises a rolling element, wherein the rolling element is abutted against the tail end of the piston assembly; when the brake assembly is pressed, the rolling element pushes the piston assembly to perform a braking action, thereby simplifying the brake handle structure, reducing the difficulty of maintenance, and optimizing the direction of the resultant force to reduce the required grip force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a hydraulic brake handle provided by an embodiment of the utility model;

[0017] Figure 2A cross-sectional view of a hydraulic brake handle provided by an embodiment of the utility model;

[0018] Figure 3 for Figure 2 A magnified view of part A;

[0019] Figure 4 An exploded view of a hydraulic brake handle provided by an embodiment of the utility model;

[0020] Figure 5 for Figure 4 A magnified view of part B;

[0021] Figure 6 for Figure 4 Enlarged view of part C;

[0022] Figure 7 for Figure 4 A magnified view of part D in the middle;

[0023] Figure 8 An exploded view of a transmission member provided in an embodiment of the utility model;

[0024] Fig. 9 A schematic diagram of the structure of a brake lever provided by an embodiment of the utility model;

[0025] Fig.10 A schematic structural diagram of a hydraulic brake handle provided by an embodiment of the utility model installed on a handlebar.

[0026] Description of the symbols in the figure:

[0027] 100. Piston assembly;

[0028] 200, fixing assembly; 201, fixing seat; 2011, fixing hole; 202, rotating shaft;

[0029] 300, brake assembly; 301, rolling element; 3011, first rolling wheel; 3012, second rolling wheel; 302, brake lever; 3021, adjustment hole; 3022, limiting groove; 3023, rotation hole; 303, first transmission element; 3031, first boss portion; 304, second transmission element; 3041, concave surface; 3042, second boss portion; 305, torsion spring; 306, adjustment element; 3061, limiting convex block;

[0030] 400. Handlebars. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0033] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0034] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0035] Combination Figures 1 to 3 As shown, an embodiment of the utility model provides a hydraulic brake handle, including a piston assembly 100, a fixing assembly 200 and a brake assembly 300. The piston assembly 100 and the brake assembly 300 are both arranged on the fixing assembly 200. The brake assembly 300 includes a rolling element 301, and the rolling element 301 is supported on the rear end of the piston assembly 100. When the brake assembly 300 is pressed, the rolling element 301 pushes the piston assembly 100 to perform a braking action.

[0036] In this embodiment, the piston assembly 100 is responsible for converting the operating force into hydraulic pressure. The piston assembly 100 directly affects the pressure change of the hydraulic oil by moving in the fixed assembly 200, thereby controlling the braking force of the brake. The fixed assembly 200 provides structural support for the entire hydraulic brake handle to ensure the accuracy of the relative positions of all components. The fixed assembly 200 serves as a mounting base for the piston assembly 100 and the brake assembly 300. The brake assembly 300 includes a rolling element 301. When the user presses the brake assembly 300, the rolling element 301 immediately transfers the pressure to the piston assembly 100. The design of the rolling element 301 enables it to reduce friction when pushing the piston assembly 100, thereby improving the braking efficiency and response speed.

[0037] Specifically, when the user does not apply force to the brake assembly 300, the piston assembly 100 is in a stationary state, the pressure in the hydraulic system remains unchanged, and the bicycle maintains a normal driving state. When the user presses the brake assembly 300, the rolling element 301 begins to push the piston assembly 100 forward. The movement of the piston assembly 100 causes the hydraulic oil pressure to increase, and the increased pressure is transmitted to the brake through the hydraulic pipeline, triggering the braking mechanism, thereby achieving the braking action. The contact design between the rolling element 301 and the rear end of the piston assembly 100 ensures the effective transmission of force and reduces the energy loss during operation, making the entire braking process more efficient and sensitive.

[0038] In one embodiment, the rolling member 301 includes a first rolling wheel 3011 and a second rolling wheel 3012; the brake assembly 300 also includes a brake rod 302, a first transmission member 303 and a second transmission member 304, the brake rod 302 is connected to the first transmission member 303, the first transmission member 303 is connected to the first rolling wheel 3011, the first rolling wheel 3011 is abutted against one side of the second transmission member 304, the second rolling wheel 3012 is connected to the other side of the second transmission member 304, and the second rolling wheel 3012 is abutted against the tail end of the piston assembly 100.

[0039] In this embodiment, the brake assembly 300 is composed of a rolling member 301, a brake rod 302, a first transmission member 303 and a second transmission member 304, wherein the rolling member 301 is further subdivided into a first rolling wheel 3011 and a second rolling wheel 3012, which makes the braking process smoother and reduces the friction loss during the operation. The brake rod 302 directly drives the first transmission member 303 through the force of the user; the first transmission member 303 serves as a connecting bridge between the brake rod 302 and the first rolling wheel 3011, transmitting the user's operating force on the brake rod 302; the first rolling wheel 3011 is located between the first transmission member 303 and the second transmission member 304, reducing friction by rolling and improving the braking efficiency; the second transmission member 304 connects the first rolling wheel 3011 and the second rolling wheel 3012, and can transmit the force to the second rolling wheel 3012; the second rolling wheel 3012 directly acts on the tail end of the piston assembly 100, converting it into hydraulic pressure to achieve the braking action.

[0040] Specifically, when the user applies force to the brake lever 302, the brake lever 302 drives the first transmission member 303 to move, and the first transmission member 303 transmits force to the first rolling wheel 3011 through its structural characteristics. The second transmission member 304 rotates under the push of the first rolling wheel 3011, and drives the second rolling wheel 3012 to move. The driving force of the second transmission member 304 is transmitted to the piston assembly 100 through the second rolling wheel 3012, pushing the piston assembly 100 to move along the fixed assembly 200, and finally increasing the pressure of the hydraulic system, triggering the braking mechanism, and achieving a braking effect. The core advantage of this design is that the setting of the double rollers optimizes the force transmission path (enhancing the combined force effect of pushing the piston assembly 100), reduces the energy loss caused by friction, and thus achieves a more efficient and rapid braking response.

[0041] Combination Figure 4 and Figure 5 As shown, in one embodiment, a side of the second transmission member 304 that abuts against the first rolling wheel 3011 is configured as a concave surface 3041, and the first rolling wheel 3011 protrudes out of the first transmission member 303 and can slide on the concave surface 3041;

[0042] Alternatively, a side of the second transmission member 304 that abuts against the first rolling wheel 3011 is configured as a convex surface, and the first rolling wheel 3011 protrudes out of the first transmission member 303 and can slide on the convex surface;

[0043] Alternatively, the side of the second transmission member 304 that abuts against the first rolling wheel 3011 is configured as a convex surface and the convex surface extends into the first transmission member 303 , and the first rolling wheel 3011 does not protrude from the first transmission member 303 and can slide on the convex surface.

[0044] In this embodiment, the second transmission member 304 is designed with a concave surface 3041 on the side in contact with the first rolling wheel 3011. The design of the concave surface 3041 not only adapts to the shape of the first rolling wheel 3011, but also provides a more stable rolling path through its concave structure, reduces lateral movement during rolling, and thus reduces wear during operation. Of course, the shape setting can also be reversed, that is, the concave surface 3041 is changed to a convex surface, and the first rolling wheel 3011 can resist the convex surface, and a stable rolling path can also be achieved. The first rolling wheel 3011 protrudes from the first transmission member 303 and can slide on the concave surface 3041 or the convex surface. The first rolling wheel 3011 can also be set not to protrude from the first transmission member 303, that is, the convex surface can extend to the first transmission member 303 to contact the first rolling wheel 3011. When the brake lever 302 is activated (i.e., operated by the user), the first transmission member 303 directly transmits power to the first rolling wheel 3011, and the first rolling wheel 3011 can slide effectively and smoothly on the concave surface 3041. This design enables the first rolling wheel 3011 to roll more smoothly when subjected to force, reduces the extra force loss caused by instability, and also improves the controllability and accuracy of the braking process. The concave surface 3041 provides a physical constraint for the first rolling wheel 3011 to slide along a predetermined trajectory.

[0045] In addition, in conventional braking systems, the lever ratio (i.e., the ratio of the length of the lever arm to the length of the load arm) is usually fixed. In this embodiment, by introducing the concave curved surface 3041, the lever ratio of the brake lever 302 during operation is variable. Here, the concave curved surface 3041 acts as a variable interface, and the dynamic adjustment of the lever ratio is achieved through contact with the first rolling wheel 3011. The specific shape (curvature) of the concave curved surface presets the path of the lever arm change.

[0046] When the brake lever 302 is operated, the first rolling wheel 3011 moves along the concave surface 3041 through the interaction between the first rolling wheel 3011 and the concave surface 3041; due to the curvature design of the concave surface 3041, the lever arm length (the distance from the first rolling wheel 3011 to the brake lever 302) changes with different stages of the operation. As the lever arm length changes, the lever ratio (lever arm length / load arm length) also changes accordingly. In the initial stage of the brake operation, a longer lever arm can provide a larger lever ratio, so that a slight operation can generate sufficient initial braking force. As the operation continues, the first rolling wheel 3011 moves along the concave surface 3041, the lever arm length decreases, the lever ratio decreases, and a greater operating force is required to achieve a stronger braking force.

[0047] The variable lever ratio design provides users with a more intuitive and controllable braking experience. From light touch to strong braking, users can feel the obvious change in force. According to the curvature design of the concave surface 3041, the mode of force arm change can be adjusted to adapt to different riding conditions and user needs. In the early stage of the braking process, even a slight operating force can produce sufficient braking effect, which helps to reduce user fatigue.

[0048] Combination Figure 6 As shown, in one embodiment, the first rolling wheel 3011 is rotatably connected to the first transmission member 303 , and the second rolling wheel 3012 is rotatably connected to the second transmission member 304 .

[0049] In this embodiment, the rotational connection between the first scroll wheel 3011 and the first transmission member 303 is achieved through a mechanical connection mechanism, which allows the first scroll wheel to rotate smoothly when receiving an operating force. This rotational connection ensures that the force from the brake lever 302 to the first transmission member 303 can be effectively converted into the rotational force of the first scroll wheel 3011. Similarly, the second scroll wheel 3012 is rotationally connected to the second transmission member 304 through a similar mechanical connection mechanism, so that the second scroll wheel 3012 can rotate smoothly when the second transmission member 304 receives the braking force transmitted from the first scroll wheel 3011 through the first transmission member 303 and other structures.

[0050] Furthermore, a first boss portion 3031 is provided at one end of the first transmission member 303 close to the second transmission member 304, the first rolling wheel 3011 is rotatably fixed on the first boss portion 3031 through a connecting member, the first rolling wheel 3011 is slidingly connected to the second transmission member 304, and the end of the first transmission member 303 away from the second transmission member 304 is rotatably connected to the brake lever 302.

[0051] In this embodiment, a first boss portion 3031 is provided at one end of the first transmission member 303 close to the second transmission member 304, which is a structural protrusion specially designed to support and fix the first rolling wheel 3011. The first rolling wheel 3011 is fixed to the first boss portion 3031 by a connecting member (such as a screw, etc.), reducing the energy loss caused by the rotation resistance. The first rolling wheel 3011 and the second transmission member 304 are in sliding connection, that is, the first rolling wheel 3011 can slide against the surface (such as the concave curved surface 3041) of the second transmission member 304. The end of the first transmission member 303 away from the second transmission member 304 is connected to the brake lever 302 by a rotating connection, ensuring that the operation of the brake lever 302 can be directly and effectively transmitted to the first transmission member 303 without going through a complicated conversion mechanism.

[0052] Furthermore, a second boss portion 3042 is provided at one end of the second transmission member 304 close to the piston assembly 100, and the second rolling wheel 3012 is rotatably fixed to the second boss portion 3042 by a connecting member (such as a screw, etc.), the second rolling wheel 3012 is slidingly connected to the piston assembly 100, and the end of the second transmission member 304 away from the piston assembly 100 is rotatably connected to the fixed assembly 200.

[0053] In this embodiment, the second boss portion 3042 is located at one end of the second transmission member 304 close to the piston assembly 100. The second boss portion 3042 is a structural protrusion, and its main function is to provide a fixing point for the second rolling wheel 3012. The second rolling wheel 3012 is rotatably fixed to the second boss portion 3042 by a connecting member (such as a screw). The sliding connection design between the second rolling wheel 3012 and the piston assembly 100 allows the second rolling wheel 3012 to move smoothly on the piston assembly 100, which further reduces the energy loss during braking and improves the stable transmission of the braking force. The end of the second transmission member 304 away from the piston assembly 100 is combined with the fixed assembly 200 by a rotational connection, which ensures that the second transmission member 304 can stably rotate in the fixed assembly 200, thereby achieving precise braking control.

[0054] In one embodiment, the first transmission member 303 and the brake lever 302 are coaxially rotatably disposed on the fixing assembly 200 , and the first transmission member 303 and the brake lever 302 rotate synchronously.

[0055] In this embodiment, the first transmission member 303 and the brake lever 302 are designed to rotate coaxially and are installed on the fixed assembly 200, that is, the first transmission member 303 and the brake lever 302 share an axis, ensuring that when the brake lever 302 is operated, the first transmission member 303 can seamlessly and instantly follow the rotation of the brake lever 302, whether it is when starting to brake or releasing the brake. This synchronous rotation relationship between the first transmission member 303 and the brake lever 302 ensures that any rotation or pressure applied to the brake lever by the user can be directly and completely transmitted to the first transmission member 303, thereby effectively driving the operation of the entire braking system.

[0056] In one embodiment, one end of the first transmission member 303 away from the first rolling wheel 3011 is pressed against the brake rod 302 , and a torsion spring 305 is disposed between the first transmission member 303 , the brake rod 302 and the fixing assembly 200 .

[0057] In this embodiment, the end of the first transmission member 303 away from the first rolling wheel 3011 directly abuts against the brake rod 302, ensuring the direct transmission of force from the brake rod 302 to the first transmission member 303 without going through a complex mechanical path, thereby reducing energy loss during operation. A torsion spring 305 is installed between the first transmission member 303 and the brake rod 302 and the fixed assembly 200. The main function of the torsion spring 305 is to provide the necessary restoring force so that the brake rod 302 can automatically return to the initial position after being released, providing preparation for the next operation. The first transmission member 303 and the brake rod 302 are connected to the fixed assembly 200 through a connecting member (such as a rotating shaft), and the torsion spring 305 is sleeved on the connecting member and clamped between the first transmission member 303 and the brake rod 302.

[0058] Combination Figures 7 to 9 As shown, in one embodiment, one end of the second transmission member 304 away from the second rolling wheel 3012 is rotatably disposed on the fixing assembly 200 .

[0059] In this embodiment, the second transmission member 304 is rotatably disposed on the fixed assembly 200 at one end away from the second rolling wheel 3012, which allows the second transmission member 304 to rotate in the fixed assembly 200. When the second transmission member 304 receives the force transmitted from the first transmission member 303 and the first rolling wheel 3011, it can smoothly convert the force into a driving force for the piston assembly 100. The stable rotation arrangement of the second transmission member 304 reduces the wear caused by friction and prolongs the service life of the brake system.

[0060] Furthermore, opposite rotation holes 3023 are formed on both sides of the brake lever 302, and the fixing assembly 200 includes a fixing seat 201, opposite fixing holes 2011 are formed on both sides of the fixing seat 201, the rotation holes 3023 are opposite to the fixing holes 2011, and the first transmission member 303 is rotationally connected to the rotation holes 3023 and the fixing holes 2011 through a connecting member. The fixing assembly 200 also includes a rotating shaft 202, and the second transmission member 304 is rotationally connected to the fixing seat 201 through the rotating shaft 202.

[0061] In this embodiment, opposite rotation holes 3023 are formed on both sides of the brake lever 302, and the fixing assembly 200 includes a fixing seat 201, on both sides of which opposite fixing holes 2011 are formed. The rotation holes 3023 correspond to the positions of the fixing holes 2011, allowing the first transmission member 303 to be rotationally connected to the rotation holes 3023 and the fixing holes 2011 at the same time through a connecting member (such as a bolt or a pin), ensuring that the brake lever 302 can rotate smoothly when operated by a user, while maintaining a fixed relationship with the fixing assembly 200, and realizing accurate force transmission. The fixing assembly 200 also includes a rotating shaft 202, and the second transmission member 304 is rotationally connected to the fixing seat 201 through the rotating shaft 202. When the second transmission member 304 receives the force from the first transmission member 303, it can rotate smoothly and further transmit power to the piston assembly 100.

[0062] In one embodiment, the brake assembly 300 also includes an adjusting member 306, an adjusting hole 3021 is opened on the brake rod 302, a part of the adjusting member 306 is arranged outside the brake rod 302, and another part of the adjusting member 306 passes through the adjusting hole 3021 to support the first transmission member 303 inside the brake rod 302, and the preload force between the adjusting member 306 and the first transmission member 303 is adjusted by adjusting the length of the adjusting member 306 extending into the adjusting hole 3021.

[0063] In this embodiment, a portion of the adjusting member 306 is disposed outside the brake lever 302, while another portion passes through the adjusting hole 3021 on the brake lever to directly abut the first transmission member 303. The adjusting member 306 adjusts the position and preload of the first transmission member 303 by its relative position inside and outside the brake lever 302. By rotating or moving the adjusting member 306, the user can adjust the length of the adjusting member 306 extending into the adjusting hole 3021, thereby adjusting the preload between the adjusting member 306 and the first transmission member 303. Increasing the preload will make the brake response more sensitive, while reducing the preload will make the brake response more gentle. The user can adjust the responsiveness of the braking system according to personal preference or different riding conditions, such as slippery roads or downhill sections.

[0064] In one embodiment, a plurality of limiting grooves 3022 are arranged at intervals around the circumference of the adjustment hole 3021 , and a limiting protrusion 3061 is correspondingly arranged on the side of the adjustment member 306 facing the adjustment hole 3021 , and the limiting protrusion 3061 can be switched on the plurality of limiting grooves 3022 .

[0065] In this embodiment, a plurality of limiting grooves 3022 are arranged at intervals around the adjustment hole 3021 provided on the brake lever 302, and these limiting grooves 3022 provide different fixed positions for the adjustment member 306, so that the user can select the appropriate preload setting as needed. A limiting protrusion 3061 is correspondingly arranged on the side of the adjustment member 306 facing the adjustment hole 3021. When the user adjusts the adjustment member 306, the limiting protrusion 3061 can be switched along the limiting grooves 3022 around the adjustment hole 3021, thereby fixing the adjustment member 306 at different preload settings. For example, six limiting grooves 3022 can be provided, and two corresponding limiting protrusions 3061 can be provided, so that the adjustment member 306 can have three fixed positions to choose from. The interlocking mechanism between the limiting protrusion 3061 and the limiting groove 3022 ensures the stability of the adjustment setting and prevents the brake setting from being accidentally changed due to vibration during intense riding.

[0066] Combination Fig.10 As shown, an embodiment of the utility model further provides a bicycle, comprising the hydraulic brake handle and a handlebar 400 as described above, wherein the hydraulic brake handle is fixed on the handlebar 400 .

[0067] In this embodiment, the hydraulic brake handle is fixed to the handlebar 400 of the bicycle, aiming to ensure the connection between the hydraulic brake handle and the handlebar 400, avoiding loosening or displacement during intense riding, thereby ensuring riding safety. Since the hydraulic brake handle provides an easy-to-operate brake force adjustment mechanism, the rider can easily adjust the brake setting according to the riding environment and personal preferences, thereby obtaining a more comfortable and satisfying riding experience. The utility model allows the hydraulic brake handle to be compatible with different models of handlebars 400, providing bicycle manufacturers and users with greater flexibility to adapt to various riding conditions and needs.

[0068] In summary, the utility model directly pushes the piston assembly 100 through the mechanism of the rolling wheel driven by the rotation of the brake lever 302, thereby realizing labor-saving operation and improving braking efficiency; at the same time, the introduced adjustment member 306 (i.e., the grip adjustment knob), and the matching limiting groove 3022 and limiting protrusion 3061 provide users with a simple and intuitive way to adjust the braking force. This allows riders to easily adjust the braking settings according to different riding conditions and personal preferences.

[0069] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hydraulic brake handle, characterized in that: It includes a piston assembly, a fixing assembly and a brake assembly, wherein the piston assembly and the brake assembly are both arranged on the fixing assembly, and the brake assembly includes a rolling element, which is abutted against the rear end of the piston assembly; when the brake assembly is pressed, the rolling element pushes the piston assembly to perform a braking action.

2. The hydraulic brake handle according to claim 1, characterized in that: The rolling member includes a first rolling wheel and a second rolling wheel; the brake assembly also includes a brake rod, a first transmission member and a second transmission member, the brake rod is connected to the first transmission member, the first transmission member is connected to the first rolling wheel, the first rolling wheel is abutted against one side of the second transmission member, the second rolling wheel is connected to the other side of the second transmission member, and the second rolling wheel is abutted against the tail end of the piston assembly.

3. The hydraulic brake handle according to claim 2, characterized in that: A side of the second transmission member that abuts against the first rolling wheel is configured as a concave curved surface, and the first rolling wheel protrudes out of the first transmission member and can slide on the concave curved surface; Alternatively, a side of the second transmission member that abuts against the first rolling wheel is configured as a convex surface, and the first rolling wheel protrudes out of the first transmission member and can slide on the convex surface; Alternatively, a side of the second transmission member that abuts against the first rolling wheel is configured as a convex surface and the convex surface extends into the first transmission member, and the first rolling wheel does not protrude from the first transmission member and can slide on the convex surface.

4. The hydraulic brake handle according to claim 2, characterized in that: The first transmission member and the brake lever are coaxially rotatably arranged on the fixing assembly, and the first transmission member and the brake lever rotate synchronously.

5. The hydraulic brake handle according to claim 4, characterized in that: One end of the first transmission member away from the first rolling wheel is pressed against the brake rod, and a torsion spring is arranged between the first transmission member, the brake rod and the fixing assembly.

6. The hydraulic brake handle according to claim 2, characterized in that: One end of the second transmission member away from the second rolling wheel is rotatably disposed on the fixing assembly.

7. The hydraulic brake handle according to claim 2, characterized in that: The first rolling wheel is rotatably connected to the first transmission member, and the second rolling wheel is rotatably connected to the second transmission member.

8. The hydraulic brake handle according to claim 5, characterized in that: The brake assembly also includes an adjusting member, an adjusting hole is opened on the brake rod, a part of the adjusting member is arranged outside the brake rod, and another part of the adjusting member passes through the adjusting hole to support the first transmission member inside the brake rod, and the preload force between the adjusting member and the first transmission member is adjusted by adjusting the length of the adjusting member extending into the adjusting hole.

9. The hydraulic brake handle according to claim 8, characterized in that: A plurality of limiting grooves are arranged at intervals on the circumference of the adjustment hole, and a limiting protrusion is correspondingly arranged on one side of the adjustment member facing the adjustment hole, and the limiting protrusion can be switched on the plurality of limiting grooves.

10. A bicycle, characterized in that: The invention comprises a hydraulic brake handle and a handlebar as described in any one of claims 1 to 9, wherein the hydraulic brake handle is fixed on the handlebar.

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