Bicycle control device

By setting the hydraulic brake mechanism outside the base member of the bicycle control device and realizing its rotatable connection with the base member, the problem of the hydraulic brake mechanism occupying the internal space of the base member in the prior art is solved, and the assembly convenience of a smaller size and simpler structure is achieved.

CN115416791BActive Publication Date: 2025-04-22GUANGDONG SHUNDE SHUNTAI INTELLIGENT SPORTS EQUIP CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202010701880.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-07-20
Publication Date
2025-04-22
Estimated Expiration
2040-07-20

AI Technical Summary

Technical Problem

In the existing hydraulic brake bicycle control device, the hydraulic brake mechanism is arranged inside the base member, resulting in large volume, complex structure, and difficult assembly.

Method used

The hydraulic brake mechanism is arranged outside the base member, and the rotatable coupling between the hydraulic brake mechanism and the base member is realized through the rotatable coupling of the first mating part and the second mating part.

Benefits of technology

The internal structure of the base member is simplified, the volume of the base member is reduced, and the assembly convenience is improved.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115416791B_ABST
    Figure CN115416791B_ABST
Patent Text Reader

Abstract

The present invention discloses a bicycle control device, comprising: a base member having a mounting structure for mounting on a bicycle; and a shift control unit arranged inside the base member and capable of rotating along a shifting speed path; a hydraulic brake mechanism having a second mating portion for rotatably connecting with a first mating portion of the base member; the hydraulic brake mechanism comprising a hydraulic cylinder and a piston at least partially movably arranged in the hydraulic cylinder, the hydraulic cylinder being connected to a hydraulic pipe of a brake member connected to a wheel, the hydraulic cylinder and the piston being arranged outside the base member; an operating member rotatably connected to the hydraulic brake mechanism and operably connected to one end of the piston, wherein the operating member performs a braking movement along the braking path under a braking operation. The present invention can simplify the internal structure of the base member, effectively reduce the volume of the base member, and improve the assembly convenience of the control device.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to a bicycle control device, and more particularly, to a bicycle control device in which a hydraulic brake mechanism is disposed outside a base member. Background Art

[0002] Hydraulic braking is a way to control bicycle brakes. The main principle is to use operable components such as handlebars to drive the piston to squeeze the cylinder, causing the cylinder to output liquid with a certain pressure, compressing the brake components installed on the wheels, thereby achieving braking and controlling the bicycle.

[0003] In existing hydraulically controlled bicycles, the hydraulic brake mechanism is often arranged in a base member connected to the handlebars of the bicycle and fixed to the base member. For example, a bicycle control device disclosed in the patent document with publication number CN104787209A includes a base member, a hydraulic device fixedly arranged inside the base member, and an operating member connected to the base member. When shifting gears, the operating member drives the shift mechanism inside the base member to rotate the base member around a first pivot axis to shift gears, while the hydraulic unit always remains relatively stationary with the base member.

[0004] This approach will result in a larger base component and a more complex internal structure, making it difficult to assemble the entire control device. Summary of the invention

[0005] The object of the present invention is to provide a bicycle control device which is easy to assemble.

[0006] To achieve the above object, the first aspect of the present invention provides the following technical solutions:

[0007] A bicycle control device comprises a base member having a mounting structure for mounting on a bicycle; a gear shift control unit arranged inside the base member and capable of rotating along a gear shift path; a hydraulic brake mechanism having a second mating portion rotatably connected to a first mating portion of the base member; the hydraulic brake mechanism comprising a hydraulic cylinder and a piston at least partially arranged in the hydraulic cylinder, the hydraulic cylinder being connected to a hydraulic pipe of a brake member connected to a wheel, the hydraulic cylinder and the piston being arranged outside the base member; an operating member rotatably connected to the hydraulic brake mechanism and operably connected to one end of the piston, wherein the operating member performs a braking movement along the braking path under a braking operation.

[0008] In an improved solution to the bicycle control device of the first aspect, the first mating portion and the second mating portion are rotatably connected via a first pivot disposed between the first and second mating portions; the operating member is operably connected to the gear shift control unit, and performs a gear shifting movement along a gear shifting path around a pivot axis of the first pivot under a gear shifting operation, and the hydraulic brake mechanism connected to the operating member rotates around the first pivot relative to the base component.

[0009] In an improved solution to the bicycle control device of the first aspect, the first mating part and the second mating part are configured into two mating groups, the second mating parts in the two mating groups are opposite, and the two ends of the first pivot respectively pass through the pivot holes of the two second mating parts and are rotatably connected to the first mating parts.

[0010] In an improved solution to the bicycle control device of the first aspect, the bicycle control device further includes a rod member, wherein the rod member is operably disposed at an upper end portion of the operating member and fixedly coupled to one end of the piston.

[0011] In an improvement to the bicycle control device of the first aspect, a shift return spring is wound around the first pivot between the two second mating parts, one end of the shift return spring is connected to the base member, and the other end is connected to the hydraulic brake mechanism.

[0012] In an improved solution of the bicycle control device of the first aspect, one end of the rod member is spherical, one end of the piston is provided with a spherical groove, and the spherical rod member end is rotatably connected to the spherical groove.

[0013] In an improved solution to the bicycle control device of the first aspect, the hydraulic brake mechanism further includes a piston return spring, which is disposed in the hydraulic cylinder and arranged between the other end of the piston and the bottom cylinder wall of the hydraulic cylinder.

[0014] In an improved solution to the bicycle control device of the first aspect, the shift control unit includes a shift control unit body arranged inside the base member, and a rod contact portion extending from the shift control unit body to the outside of the base member, the rod contact portion extends to a position corresponding to the shift contact portion of the operating member, and the shift contact portion of the operating member is in close contact with the rod contact portion under the shift operation and drives the shift control unit to rotate along the shift speed path.

[0015] In an improved scheme for the bicycle control device of the first aspect, the shift control unit includes a shift control unit body arranged inside the base member, and a rod contact portion extending from the shift control unit body to the outside of the base member, and the end of the hydraulic brake mechanism close to the operating member is provided with a connecting portion with a U-shaped groove, the rod contact portion extends into the U-shaped groove, and the upper end portion of the operating member is connected to the connecting portion of the hydraulic brake mechanism via a second pivot.

[0016] In an improved solution to the bicycle control device of the first aspect, the hydraulic cylinder is connected to the hydraulic pipe through a hydraulic channel arranged in the hydraulic brake mechanism, a part of the hydraulic pipe is arranged in the base component, and the rest of the hydraulic pipe extends from the base component to the brake component of the wheel.

[0017] The second aspect of the present invention provides the following technical solution:

[0018] A bicycle control device, comprising:

[0019] A base member has a mounting structure for mounting on a bicycle.

[0020] The gear shift control unit is arranged inside the base component and can rotate around the first gear shift axis along the gear shifting path.

[0021] The hydraulic brake mechanism comprises a hydraulic cylinder and a piston arranged outside a base member, wherein the piston is movably arranged in the hydraulic cylinder. The hydraulic brake mechanism is rotatably connected to the base member and is connected to a hydraulic pipe connected to a brake member of a wheel. The hydraulic brake mechanism can rotate relative to the base member around a second shift axis.

[0022] The operating member is rotatably connected to the hydraulic brake mechanism and can rotate relative to the base member and the hydraulic brake mechanism around the brake axis. The operating member can also rotate relative to the base member around the shift axis while remaining relatively stationary together with the hydraulic brake mechanism.

[0023] In an improved solution to the bicycle control device of the second aspect, the hydraulic brake mechanism has a second mating portion rotatably connected to the first mating portion of the base component, the first mating portion and the second mating portion are arranged sequentially in the direction of the second shift axis, and the second shift shaft extends through a pivot hole opened in the second mating portion and is rotatably connected to the first mating portion.

[0024] In an improved solution to the bicycle control device of the second aspect, the hydraulic brake mechanism has a connecting portion, and the brake shaft passes through the upper end of the operating member and the pivot hole on the connecting portion, so that the hydraulic brake mechanism and the operating member are rotatably connected through the brake shaft.

[0025] In an improved solution of the bicycle control device of the second aspect, the hydraulic brake mechanism includes an oil storage cylinder in fluid communication with the hydraulic cylinder, the hydraulic cylinder is in communication with the hydraulic pipe, and the piston can move linearly along the cylinder wall of the hydraulic cylinder to compress the liquid in the hydraulic cylinder and transport the liquid to the hydraulic pipe. The automatic bicycle control device also includes a rod member, one end of which is arranged on the upper end of the operating member, and the other end of the rod member is connected to one end of the piston, wherein the rod member pushes the piston to move linearly along the cylinder wall of the hydraulic cylinder when the operating member rotates around the brake axis.

[0026] Compared with the prior art, the beneficial effects of the present invention are: the hydraulic brake mechanism is arranged outside the base component and is rotatably connected to the base component. The hydraulic brake mechanism can rotate around the first pivot axis together with the operating member when shifting gears, thereby simplifying the internal structure of the base component, effectively reducing the volume of the base component, efficiently utilizing the internal volume of the base component, and improving the assembly convenience of the control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is an overall three-dimensional view of a bicycle control device according to an embodiment of the present invention, wherein the operating member is located at an original position.

[0028] Figure 2 The invention is a three-dimensional diagram of the connection relationship between the operating member of the bicycle control device and the hydraulic brake mechanism according to one embodiment of the present invention.

[0029] Figure 3 The invention is a cross-sectional view of a bicycle control device according to an embodiment of the present invention, wherein the operating member is located at an original position.

[0030] Figure 4 FIG. 1 is a side view of a bicycle control device according to an embodiment of the present invention.

[0031] Figure 5 It is a schematic diagram of a first gear shifting path of a bicycle control device according to an embodiment of the present invention.

[0032] Figure 6 It is a schematic diagram of a second gear shifting path of a bicycle control device according to an embodiment of the present invention.

[0033] Figure 7 An embodiment of the present invention Figure 3 A schematic diagram of the braking state of a bicycle control device is shown.

[0034] Illustration Description:

[0035] 1-base member; 11-first matching portion; 12-mounting structure of the base member;

[0036] 2-hydraulic brake mechanism; 21-second matching part; 22-hydraulic cylinder; 23-piston; 24-hydraulic channel; 25-connecting part; 26-piston return spring;

[0037] 3-shift control unit; 31-rod contact portion;

[0038] 4-operating member; 41-end of the operating member; 42-rod member; 43-shift contact portion;

[0039] 5- First pivot;

[0040] 6- Second pivot;

[0041] 7-Shift return spring;

[0042] 8-Hydraulic pipe;

[0043] 9- casing;

[0044] S1 - first gear shifting path; S2 - second gear shifting path; P1 - first pivot axis; P2 - second pivot axis; P3 - third pivot axis. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0046] like Figures 1 to 7 In the embodiments shown, all are control devices held by the right hand. It should be noted that the control device of the present invention can be configured as a control device held by the left hand. To facilitate understanding of the embodiments of the present invention, the control device held by the right hand will be described below.

[0047] Various embodiments of the present invention provide a bicycle control device having a hydraulic brake mechanism disposed outside of a base member.

[0048] like Figure 3 As shown in FIG. 1 , a bicycle control device according to an embodiment of the present invention comprises a base member 1. A first end of the base member 1 is provided with a mounting structure 12 for mounting on a bicycle. Figure 3As shown, the mounting structure may include, for example, a mounting ring, which is sleeved on a bicycle handlebar to mount the bicycle control device as a whole on the bicycle. It is easy for a person skilled in the art to understand that mounting members of other shapes and structures are also possible.

[0049] The shift control unit 3 is disposed inside the base member 1 , and can rotate around a third pivot axis P3 (also called a first shift axis) along a shift speed path under the operation of the operating member 4 .

[0050] The hydraulic brake mechanism 2 is arranged outside the base member 1 and is rotatably connected to the second end of the base member 1. The hydraulic brake mechanism 2 includes a hydraulic cylinder 22 and a piston 23, and the hydraulic cylinder 22 is connected to the brake member (not shown) of the wheel through a hydraulic pipe 8. The hydraulic brake mechanism 2 can rotate around the first pivot axis P1 (also called the second shift axis) relative to the base member 1. Specifically, the base member 1 has a first matching portion 11. The hydraulic brake mechanism 2 has a second matching portion 21 rotatably connected to the first matching portion 11 of the base member 1. The piston 23 can move linearly along the cylinder wall of the hydraulic cylinder 22 to compress the liquid in the oil cylinder and transport the liquid to the hydraulic pipe.

[0051] In another optional embodiment of the present invention, the hydraulic brake mechanism may further include an oil storage cylinder in fluid communication with the hydraulic cylinder. The oil storage cylinder is in fluid communication with the hydraulic cylinder and provides a liquid such as hydraulic oil to the hydraulic cylinder when needed. In one embodiment, the oil storage cylinder may be disposed at a certain position within the base member. The oil storage cylinder may be disposed in an area adjacent to the hydraulic cylinder or in a suitable space within the base member, with a fluid channel disposed between the hydraulic cylinder and the oil storage cylinder. In another embodiment, the oil storage cylinder may be disposed outside the base member and adjacent to the hydraulic cylinder 22.

[0052] The operating member 4 is rotatably connected to the hydraulic brake mechanism 2, and can rotate relative to the base member 1 around the first pivot axis P1 while remaining relatively stationary with the hydraulic brake mechanism 2, so as to drive the shift control unit 3 to rotate along the shifting speed path. The operating member 4 can also rotate relative to the base member 1 and the hydraulic brake mechanism 2 around the second pivot axis P2, so as to drive the hydraulic brake mechanism 2 to deliver liquid to the hydraulic pipe 8. Specifically, the operating member 4 is rotatably connected to the connecting portion 25 of the hydraulic brake mechanism near its upper end, and a rod member 42 is provided at the end of the operating member 4, and the end of the rod member 42 is connected to one end of the piston 23.

[0053] In the embodiment of the present invention, when the operating member 4 rotates about the second pivot axis P2, the hydraulic brake mechanism 2 and the base member 1 are relatively stationary.

[0054] When shifting gears is required, the operating member 4 is operated to rotate around the first pivot axis P1, acting on the shift control unit 3, and the shift control unit 3 is driven to rotate toward the shifting speed path, and the gear position inside the shift control unit 3 changes, causing the shift assembly on the bicycle wheel to change gear position.

[0055] When braking is required, the operating member 4 is operated to rotate around the second pivot axis P2, and the rod member 42 acts on the hydraulic brake mechanism 2 through the piston 23, so that the hydraulic brake mechanism 2 outputs a fluid with a certain pressure to the hydraulic pipe 8, driving the brake member on the bicycle wheel to lock the wheel.

[0056] When shifting, the hydraulic brake mechanism 2 rotates around the first pivot axis P1 together with the operating member 4. In this way, the hydraulic brake mechanism 2 can be separated from the base member 1 and become relatively independent.

[0057] Compared with the existing method in which the hydraulic brake mechanism 2 is arranged inside the base component 1, the hydraulic brake mechanism 2 of this embodiment is arranged outside the base component 1, which simplifies the internal structure of the base component 1, effectively reduces the volume of the base component 1, and efficiently utilizes the internal volume of the base component 1. Moreover, since there is no need to assemble the hydraulic brake mechanism 2 into the base component 1, the assembly convenience of the bicycle control device can be improved.

[0058] like Figure 3 In the embodiment shown, the hydraulic brake mechanism 2 is arranged above the operating member 4 and connected to the end face of the base member 1 away from the mounting structure. In a feasible embodiment, the hydraulic brake mechanism 2 is arranged below the operating member 4 and connected to the end face of the base member 1 close to the mounting structure.

[0059] In an optional embodiment, if Figure 4-6 As shown, the gear shifting path is provided with two sections. On different paths, the gear shifting control unit 3 realizes the change of different gears. The gear shifting control unit 3 can rotate along the first gear shifting path S1 or the second gear shifting path S2 under the operation of the operating member 4. The first gear shifting path S1 and the second gear shifting path S2 have the same direction but different travels, so as to realize different gear changes.

[0060] The base member 1 includes a first end portion away from the handlebar mounting structure and a second end portion close to the handlebar mounting position, and the shift control unit 3 is arranged between the first end portion and the second end portion of the base member 1 .

[0061] The operating member 4 is a dual-function operating member, which performs a braking operation in addition to a gear shifting operation. The operating member 4 is operably connected relative to the base member 1, and can move around the first pivot axis P1 along the gear shifting direction. At the same time, the operating member 4 is further movably connected relative to the base member 1 to move around the second pivot axis P2 of the second pivot axis (also called the brake axis) along the braking direction that does not coincide with the gear shifting direction. The operating member 4 includes a gear shifting operating part that facilitates the gear shifting operation and a brake operating part that facilitates the brake operation.

[0062] In one embodiment, Figure 3 As shown, the shift control unit 3 includes a shift control unit body 3 and a connecting member. The connecting member includes a portion operably connected to the shift control unit body and a rod contact portion 31 connected to the operating member 4. A U-shaped slot is provided on the connecting portion 25 of the hydraulic brake mechanism 2. The rod contact portion 31 of the connecting member is arranged in the middle of the U-shaped slot. Under the shift operation, the rod contact portion 31 is in close contact with the inner side of the U-shaped slot, and under the brake operation, the rod contact portion is slidably connected in the U-shaped slot. A pivot hole is provided at the upper end of the operating member 4, and a pivot hole is also provided on the connecting portion 25 of the hydraulic brake mechanism 2. The second pivot passes through the upper end of the operating member 5 and the pivot hole of the connecting portion 25 of the hydraulic brake mechanism 2, so that the operating member and the hydraulic brake mechanism are rotatably connected.

[0063] In another embodiment, a U-shaped slot (operating member slot) may be provided on the rear side of the upper end of the operating member 4, and the rod contact portion 31 of the coupling member is arranged in the middle of the operating member slot, and the rod contact portion 31 is slidably connected to the operating member slot. The upper end of the operating member 4 is rotatably connected to the hydraulic brake mechanism via a second pivot (not shown).

[0064] Since the operating member 4 can be operably connected to the shift control unit 3 through the rod contact portion 31. When the user operates the operating member 4 to move in the first speed shift direction S1 and the second speed shift direction S2 around the first pivot axis P1, the U-shaped slot or the operating member groove will contact the rod contact portion 31 on the connecting member, thereby driving the connecting member to rotate around the rotating shaft in the shift control unit 3, and then operably making the winding component in the shift control unit 3 selectively rotate along the first speed shift direction S1 (cable release direction) and the second speed shift direction S2 (cable tension direction). The second speed shift direction S2 has a larger stroke than the first speed shift direction S1. In the embodiment of the present invention, the shift control unit adopts the structure and implementation of the prior art. After reading this application, ordinary technicians in this field can know the implementation of the shift control unit, which will not be described in detail here.

[0065] In a further embodiment, a method is proposed in which the hydraulic brake mechanism 2 is rotatably connected to the base member 1. The first matching portion 11 and the second matching portion 21 are rotatably connected via a first pivot (also called a shift shaft) 5 disposed therebetween.

[0066] There are many ways of rotationally connecting the first matching portion 11 and the second matching portion 21, such as setting the first matching portion 11 and the second matching portion 21 as matching spherical protrusions and spherical grooves; in a preferred embodiment, the first matching portion 11 and the second matching portion 21 are rotationally connected by a first pivot 5 arranged therebetween, the first matching portion 11 and the second matching portion 21 are stacked to form a matching group, and the first pivot 5 passes through the second matching portion 21 and is rotatably connected to the first matching portion 11.

[0067] Optionally, two groups of matching groups are provided, and the second matching parts 21 of the two matching groups are opposite, and the two ends of the first pivot 5 respectively pass through the second matching parts 21 of the two matching groups and are rotatably connected to the corresponding first matching parts 11, wherein, in order to facilitate continuous gear shifting, the first pivot 5 part between the two second matching parts 21 is wound with a shift return spring 7, and after the hydraulic brake mechanism 2 and the operating member 4 rotate around the first pivot axis P1, the hydraulic brake mechanism 2 and the operating member 4 are driven to reset, specifically, the end connection position of the shift return spring 7 is based on being able to be twisted when the hydraulic brake mechanism 2 and the base member 1 rotate relative to each other; at this time, if the first pivot 5 is fixedly connected to the hydraulic brake mechanism 2 and rotatably connected to the base member 1, at least one end of the shift return spring 7 is connected to the base member 1, illustratively, one end of the shift return spring 7 is connected to the end face of the base member 1 opposite to the hydraulic brake mechanism 2, and the other end is fixedly connected to the hydraulic brake mechanism 2, and when the hydraulic brake mechanism 2 rotates around the first pivot axis P1, the shift return spring 7 is twisted.

[0068] When shifting gears, Figure 5-6 As shown, the operating force on the operating member 4 generally comes from the rider's hand strength, so that it can move from the original position to the shift position. After the shift reset spring 7 is set, when the shift is completed, the hand strength begins to relax, and the shift reset spring 7 starts to work, driving the hydraulic brake mechanism 2 and the operating member 4 to return to the original position, so as to perform the next shift operation.

[0069] In a further embodiment, Figure 3As shown, a method is proposed in which the operating member 4 is rotatably connected to the hydraulic brake mechanism 2, and the bicycle control device also includes a second pivot 6, and the operating member 4 is rotatably connected to the hydraulic brake mechanism 2 through a connecting portion 25 and the second pivot 6. The second pivot 6 passes through the end portion of the operating member 4 and is rotatably connected to the connecting portion 25, and the central axis of the second pivot 6 is the second pivot axis P2. In other optional embodiments, the connecting portion 25 can also be arranged on the base member 1, and in this case, the hydraulic brake mechanism 2 has a limiting portion extending to the corresponding position of the operating member 4, so that when the operating member 4 rotates around the first pivot axis P1, the limiting portion can drive the hydraulic brake mechanism 2 to rotate synchronously around the first pivot axis P1.

[0070] Preferably, the connecting portion 25 includes two opposite limit blocks, a groove is formed between the two limit blocks, and the part of the operating member 4 near the end is inserted into the groove. The two ends of the second pivot 6 extend from the two side end surfaces of the operating member 4 near the end to the limit blocks and are rotatably connected to the limit blocks.

[0071] At this time, when the operating member 4 rotates around the second pivot axis P2, the end of the operating member 4 rotates with the second pivot axis P2 as the rotation center, and the distance from the end to the second pivot axis P2 is the radius, generating relative displacement with the hydraulic brake mechanism 2.

[0072] In a further embodiment, a mode is provided in which the operating member 4 drives the hydraulic brake mechanism 2 to output liquid to the hydraulic pipe 8, the hydraulic cylinder 22 is connected to the hydraulic pipe 8, the other end of the piston 23 extends into the inner cavity of the hydraulic cylinder 22 and can move linearly along the cylinder wall of the hydraulic cylinder 22 to compress the liquid in the hydraulic cylinder 22 and deliver the liquid to the hydraulic pipe 8. The end of the rod member 42 is connected to one end of the piston 23, and when the operating member 4 rotates around the second pivot axis P2 close to the end of the operating member 4, the rod member 42 pushes the piston 23 to move linearly along the cylinder wall of the hydraulic cylinder 22.

[0073] Since the operating member 4 rotates around the second pivot axis P2, the rotational motion of the operating member 4 is converted into the linear movement of the piston 23. In one embodiment, one end of the rod member 42 is fixedly connected to the piston, and the other end is operably connected to the upper end of the operating member 4. In another embodiment, the end of the rod member 42 is spherical, and a spherical groove is provided at one end of the piston 23, and the end of the spherical rod member 42 is rotatably connected to the spherical groove. Among them, an annular sleeve is provided at the entrance of the piston 23, and the end of the rod member 42 passes through the through hole of the annular sleeve and extends into the spherical groove of the piston 23. The outer diameter of the end of the rod member 42 is larger than the aperture of the through hole, which ensures that the end of the rod member 42 will not be separated from the spherical groove, and ensures the connection between the rod member 42 and the piston 23.

[0074] When the operating member 4 is operated to perform a braking movement, the upper end portion thereof rotates away from the rod contact portion 31 , driving the rod member 42 attached to the upper end portion to squeeze the piston 23 , causing the piston 23 to move linearly along the cylinder wall of the hydraulic cylinder 22 .

[0075] In a further embodiment, the hydraulic brake mechanism 2 further includes a piston return spring 26, which is disposed in the hydraulic cylinder 22 and between the other end of the piston 23 and the cylinder wall of the hydraulic cylinder. Figure 3 In the described embodiment, the piston return spring 26 is arranged between the bottom inner wall of the cylinder wall and the piston 23, wherein the piston 23 is at least partially arranged in the inner circle of the return spring 29.

[0076] When the piston 23 is driven to move linearly along the cylinder wall of the hydraulic cylinder 22, the piston return spring 26 is compressed. When the force of the operating member 4 on the piston 23 disappears, the piston return spring 26 applies a thrust to the piston 23, so that the piston returns to its initial position, and the liquid flows back to the hydraulic cylinder 22 from the hydraulic pipe 8. The brake component on the wheel loses pressure, thereby relaxing the wheel and allowing the wheel to continue to rotate.

[0077] Meanwhile, when the piston 23 returns to its initial position, the piston 23 pushes the rod member 42, thereby driving the end of the operating member 4 to rotate in the opposite direction around the second pivot axis P2, so that the operating member 4 also returns to its initial position for the next braking operation.

[0078] In a further embodiment, the hydraulic cylinder 22 is connected to the hydraulic pipe 8 through a hydraulic channel 24 disposed in the hydraulic brake mechanism 2. Part of the hydraulic pipe 8 is disposed in the base member 1, and the rest of the hydraulic pipe 8 extends from the base member 1 to the brake member of the wheel.

[0079] In addition, in one embodiment, a soft sleeve 9 is arranged between the hydraulic pipe 8 and the hydraulic channel 24. When the hydraulic brake mechanism 2 rotates around the first pivot axis 2, it moves relative to the base component 1, and the hydraulic pipe 8 partially arranged in the base component 1 therefore moves relative to the hydraulic brake mechanism 2. In order to ensure that the hydraulic cylinder 22 and the hydraulic pipe 8 can always be connected, a deformable soft sleeve 9 is provided to maintain the connection between the hydraulic cylinder 22 and the hydraulic pipe 8.

[0080] In one embodiment, the opposite end faces of the hydraulic brake mechanism 2 and the base member 1 are configured as matching arcuate surfaces so that when the hydraulic brake mechanism 2 rotates around the first pivot axis P1, no gap occurs between the hydraulic brake mechanism 2 and the base member 1, or the gap is small.

[0081] In one embodiment, a shift contact portion 43 is provided on the operating member 4, and the shift control unit 3 includes a shift control unit body arranged inside the base member 1 and a rod contact portion 31 extending from the shift control unit body to the outside of the base member 1, and the rod contact portion 31 extends to a position corresponding to the shift contact portion 43 of the operating member 4, and is located on a path where the operating member 4 and the hydraulic brake mechanism rotate around the first pivot 5 while maintaining relative stillness, and the shift contact portion 43 rotates with the operating member 4 relative to the base member 1 around the first pivot axis P1, contacts and drives the rod contact portion 31 to rotate along the shifting speed path.

[0082] In a further embodiment, two operating members 4 are provided, and two rod contact portions 31 are provided and are parallel to each other, wherein when the first operating member 4 rotates around the first pivot axis P1, it pushes the outer rod contact portion 31 to rotate along the gear shifting path, and when the second operating member 4 rotates around the first pivot axis P1, it pushes the inner rod contact portion 31 to rotate along the gear shifting path, and at the same time pushes the first operating member 4 to rotate around the first pivot axis P1, thereby causing the two rod contact portions 31 to rotate synchronously. Among them, when only the outer rod contact portion 31 and the two rod contact portions 31 rotate, the change of different gears is realized, and at this time, the first gear shifting path S1 and the second gear shifting path S2 can be set to have the same direction and the same stroke.

[0083] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bicycle control device, comprising a base member having a mounting structure for mounting on a bicycle; and a shift control unit disposed inside the base member and capable of rotating along a shifting speed path; characterized in that : A hydraulic brake mechanism having a second mating portion rotatably coupled to the first mating portion of the base member; the hydraulic brake mechanism comprising a hydraulic cylinder and a piston at least partially disposed in the hydraulic cylinder, the hydraulic cylinder being in communication with a hydraulic pipe coupled to a brake member of a wheel, the hydraulic cylinder and the piston being disposed outside the base member; an operating member rotatably connected to the hydraulic brake mechanism and operably connected to one end of the piston, wherein the operating member performs a braking movement along a braking path under a braking operation; The first matching portion and the second matching portion are rotatably connected via a first pivot disposed between the first and second matching portions; The shift control unit includes a shift control unit body disposed inside the base member, and a rod contact portion extending from the shift control unit body to the outside of the base member; The rod contact portion extends to a position corresponding to the gear shift contact portion of the operating member, and the gear shift contact portion of the operating member is in close contact with the rod contact portion under the gear shift operation and drives the gear shift control unit to rotate along the gear shift path; or, the hydraulic brake mechanism is provided with a connecting portion with a U-shaped groove at one end close to the operating member, the rod contact portion extends into the U-shaped groove, and the upper end portion of the operating member is connected to the connecting portion of the hydraulic brake mechanism via a second pivot.

2. The bicycle control device according to claim 1, characterized in that: The operating member is operably connected to the shift control unit, and performs a shifting movement along a shifting speed path around a pivot axis of the first pivot under a shifting operation, and the hydraulic brake mechanism connected to the operating member rotates around the first pivot relative to the base member.

3. The bicycle control device according to claim 1, characterized in that: The hydraulic brake mechanism further comprises a piston return spring, which is disposed in the hydraulic cylinder and between the other end of the piston and the bottom cylinder wall of the hydraulic cylinder; or, A shift return spring is wound around the first pivot between the two second matching parts, one end of the shift return spring is connected to the base component, and the other end is connected to the hydraulic brake mechanism.

4. The bicycle control device according to claim 1, characterized in that: The bicycle control device further includes a lever member, wherein the lever member is operably disposed at an upper end portion of the operating member and fixedly coupled to the one end of the piston.

5. The bicycle control device according to claim 1, characterized in that: The hydraulic cylinder is connected to the hydraulic pipe through a hydraulic channel arranged in the hydraulic brake mechanism. A part of the hydraulic pipe is arranged in the base member, and the rest of the hydraulic pipe extends from the base member to the brake member of the wheel.

6. A bicycle control device, comprising: a base member having a mounting structure for mounting on a bicycle; A shift control unit is disposed inside the base member and is capable of rotating around a first shift axis along a shift speed path; A hydraulic brake mechanism, comprising a hydraulic cylinder and a piston disposed outside a base member, the piston being movably disposed in the hydraulic cylinder, the hydraulic brake mechanism being rotatably coupled to the base member and coupled to a hydraulic pipe coupled to a brake member of a wheel, and being rotatable relative to the base member about a second shift axis; an operating member rotatably connected to the hydraulic brake mechanism, which can rotate relative to the base member and the hydraulic brake mechanism about the brake axis, and the operating member can also rotate relative to the base member about the shift axis while remaining relatively stationary together with the hydraulic brake mechanism; The hydraulic brake mechanism has a second mating portion rotatably coupled to the first mating portion of the base member, the first mating portion and the second mating portion are arranged in sequence in the direction of the second shift axis, and the second shift shaft extends through a pivot hole provided in the second mating portion and is rotatably coupled to the first mating portion; The hydraulic brake mechanism has a coupling portion, the brake shaft passes through the upper end portion of the operating member and the pivot hole on the coupling portion, so that the hydraulic brake mechanism and the operating member are rotatably coupled via the brake shaft; and / or, The hydraulic brake mechanism further comprises an oil storage cylinder in fluid communication with the hydraulic cylinder, the hydraulic cylinder being in communication with the hydraulic pipe, the piston being capable of linearly moving along the cylinder wall of the hydraulic cylinder to compress the liquid in the hydraulic cylinder and deliver the liquid to the hydraulic pipe; The bicycle control device further comprises a rod member, one end of which is arranged at an upper end of the operating member, and the other end of which is connected to one end of the piston, wherein when the operating member rotates around the brake axis, the rod member pushes the piston to move linearly along the cylinder wall of the hydraulic cylinder.

Citation Information

Patent Citations

  • Bicycle control device

    CN104787209A

  • Bicycle control device

    CN212797206U