Hydraulic braking and speed changing integrated handlebar and bicycle

Abstract

The utility model belongs to the technical field of bicycle handlebars, and discloses a hydraulic braking and speed changing integrated handlebar and a bicycle, the hydraulic braking and speed changing integrated handlebar comprises a knob seat, a top cover, a handle, a speed changing oil cylinder, a braking oil cylinder, a speed changing piston, a braking piston and a knob; the variable-speed oil cylinder and the brake oil cylinder are both arranged in the handlebar, the knob seat is connected to the handlebar in a sleeving mode and fixedly connected with the variable-speed oil cylinder and the brake oil cylinder, the variable-speed piston is sealed and movably connected with the variable-speed oil cylinder, and the brake piston is sealed and movably connected with the brake oil cylinder. One end of the handle is movably connected with the knob seat, a universal ball connecting rod is movably connected to the end, close to the handle, of the handle, and a universal ball head of the universal ball connecting rod is movably connected with the brake piston; the rotary knob is movably connected to the rotary knob base in a sleeved mode and movably connected with the variable-speed piston, and the variable-speed piston can move up and down when the rotary knob is rotated.

Description

TECHNICAL FIELD

[0001] The utility model relates to bicycle handlebar technical field especially relates to a hydraulic brake speed change integrated handle and bicycle. BACKGROUND

[0002] The existing bicycle oil brake handle almost has exposed support, handle, oil tank, oil pipe and other structures, these structures are easy to be polluted and are not conducive to cleaning.

[0003] The Chinese patent with the publication number CN115892320A discloses an oil brake handle, which comprises an oil brake knob, a brake cylinder, a piston return spring, a piston and a bearing. The brake cylinder has a storage cavity, the top of the storage cavity has a cavity opening, and the bottom has an oil outlet hole. One end of the piston is inserted into the cavity opening, seals the cavity opening and is movably connected with the storage cavity. The bearing is arranged at the other end of the piston, and the axis of the bearing is perpendicular to the movement direction of the piston. The oil brake return spring is arranged in the storage cavity, one end of the oil brake return spring abuts against the bottom of the storage cavity, and the other end of the oil brake return spring abuts against the piston. The oil brake knob has an inclined part abutting against the bearing. When the oil brake knob is rotated, the inclined part presses the bearing, drives the piston to move downward, and makes the brake oil in the storage cavity extrude out of the oil outlet hole. Although the components on the oil brake handle are arranged inside the oil brake knob, the problem of being easily polluted is solved, but there is no space to arrange the speed change structure, and the speed regulation structure can only be arranged on the other handle, which leads to the fact that the bicycle cannot be applied to the bicycle which needs to have speed change regulation on both handlebars. SUMMARY

[0004] Therefore, the utility model provides a hydraulic brake speed change integrated handle and bicycle, which is used for solving the problems in the background art.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides a hydraulic brake speed change integrated handle, which comprises a knob seat, a top cover, a handle, a speed change cylinder, a brake cylinder, a speed change piston, a brake piston and a knob.

[0006] The speed change cylinder and the brake cylinder are arranged in the handlebar, the knob seat is sleeved on the handlebar and is fixed on the handlebar in connection with the speed change cylinder and the brake cylinder, the speed change piston is sealingly and movably connected with the speed change cylinder, and the brake piston is sealingly and movably connected with the brake cylinder.

[0007] One end of the handle is movably connected with the knob seat, a universal ball connecting rod is movably connected with the handle near the one end of the handle, and the universal ball head of the universal ball connecting rod is movably connected with the brake piston. The knob is movably sleeved on the knob seat and is movably connected with the speed change piston. When the knob is rotated, the speed change piston moves up and down.

[0008] Further, the hydraulic brake speed change integrated handle further comprises a bearing and a connecting pin.

[0009] The side wall of the knob seat and the side wall of the handle are provided with through holes, the inner side wall of the knob is further provided with an inclined sliding groove, one end of the connecting pin is connected with the shift piston, the other end of the connecting pin is connected with the bearing in sequence by penetrating the through hole of the handle and the through hole of the knob seat, the bearing is clamped with the inclined sliding groove; the through hole of the handle and the through hole of the knob seat are not less than the movement stroke of the connecting pin.

[0010] Further, the outer side wall of the knob seat is provided with a positioning sliding groove along the circumference thereof, the bottom of the positioning sliding groove is provided with a plurality of positioning holes, the knob is provided with a positioning pin, the end of the positioning pin is provided with an elastically compressible wave bead, when the knob rotates, the wave bead can be clamped into the positioning hole.

[0011] Further, the knob comprises a first inner half ring, a second inner half ring and an outer ring, wherein the first inner half ring and the second inner half ring are spliced to form an inner ring, the inclined sliding groove and the positioning pin are arranged on the inner side wall of the inner ring, the outer side wall of the inner ring is provided with a ring of clamping spring grooves at the top and is provided with a limiting groove extending downward along the top, the inner side wall of the outer ring is provided with a limiting block matched with the limiting groove;

[0012] The knob seat is in the shape of a cylinder as a whole, and the bottom of the outer side wall of the knob seat is provided with a ring of limiting rings;

[0013] The first inner half ring and the second inner half ring are spliced to form the inner ring, which is sleeved on the knob seat, the bottom of the first inner half ring and the bottom of the second inner half ring abut against the limiting ring, the outer ring is sleeved on the inner ring from above, the limiting block is clamped with the limiting groove, and the inner ring and the outer ring are fixed as a whole by clamping the limiting groove with a clamping spring.

[0014] Further, the shift oil cylinder and the brake oil cylinder are connected with each other through an oil cylinder seat to form an integrated oil cylinder, and the oil cylinder seat is provided with a connecting lug, the knob seat, the handle and the connecting lug are fixed by screws.

[0015] Further, the hydraulic brake and shift integrated handle further comprises an oil cavity sealing plate made of elastic material and an oil cavity sealing cover with air holes.

[0016] The shift oil cylinder and the brake oil cylinder are both columnar oil cylinders, and a balance oil groove is arranged between the outer side wall of the shift oil cylinder and the outer side wall of the brake oil cylinder, the bottom of the balance oil groove is provided with an oil communication hole connected with the shift oil cylinder, the oil cavity sealing plate covers and seals the balance oil groove, and the oil cavity sealing cover covers the balance oil groove so that a balance oil cavity is formed between the balance oil groove and the oil cavity sealing cover.

[0017] Further, the hydraulic brake and gear integrated handle further comprises an oil cylinder cover, the gear piston comprises a gear piston body and a gear piston nut, the brake piston comprises a brake piston body and a brake piston nut,

[0018] The larger-diameter end of the gear piston body is inserted into a gear oil cylinder, the larger-diameter end of the brake piston body is inserted into a brake oil cylinder, the oil cylinder cover covers the gear oil cylinder and the brake oil cylinder, the other end of the gear piston body is connected to the gear piston nut through the oil cylinder cover, and the other end of the brake piston body is connected to the brake piston nut through the oil cylinder cover.

[0019] The ball head of the universal ball connecting rod is movably connected to the brake piston nut, and the connecting pin connects the gear piston nut.

[0020] Further, a first guide structure is arranged between the gear piston body and the oil cylinder cover, and a second guide structure is arranged between the brake piston body and the oil cylinder cover.

[0021] Further, the hydraulic brake and gear integrated handle further comprises a knob sleeve, and the knob sleeve is sleeved with the knob.

[0022] To achieve one or part or all of the above purposes or other purposes, the utility model further provides a bicycle, the bicycle comprises the hydraulic brake and gear integrated handle.

[0023] The embodiment of the utility model is implemented, and the following beneficial effects are achieved:

[0024] After the above-mentioned hydraulic brake and gear integrated handle is adopted, since the gear oil cylinder and the brake oil cylinder are arranged in the handle, the oil pipe can be arranged in the handle, so that the outside is easy to clean and the inside is not easy to be polluted. Since the hydraulic brake and gear integrated handle is provided with gear adjustment and brake adjustment, only two handles are provided with similar structures on the bicycle requiring double gear, so that the left handle and the right handle can be adjusted, which is not only suitable for ordinary bicycles, but also very suitable for some relatively high mountain bicycles. DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0026] Wherein:

[0027] Figure 1 The structure explosion map of the hydraulic brake and speed change integrated handle in one embodiment of the utility model;

[0028] Figure 2 For Figure 1 The enlarged view of A in the middle;

[0029] Figure 3 For Figure 1 The enlarged view of B in the middle;

[0030] Figure 4 The structure schematic view of the hydraulic brake and speed change integrated handle in one embodiment of the utility model;

[0031] Figure 5 For Figure 4 Another view;

[0032] Figure 6 For Figure 4 The A-A cross section schematic view in the middle;

[0033] Figure 7 For Figure 5 The B-B cross section schematic view in the middle;

[0034] Figure 8 The structure schematic view of the inner ring in one embodiment of the utility model;

[0035] Figure 9 For Figure 8 Another view;

[0036] Figure 10 The structure schematic view of the knob seat in one embodiment of the utility model;

[0037] Figure 11 The structure schematic view of the speed change oil cylinder and brake oil cylinder in one embodiment of the utility model.

[0038] Reference signs:

[0039] 1, knob seat; 11, positioning sliding groove; 111, positioning hole; 12, limiting ring;

[0040] 2, top cover;

[0041] 3, handle;

[0042] 4, speed change oil cylinder;

[0043] 5, brake oil cylinder; 45a, connecting lug; 45b, balance oil groove; 45c, oil cylinder cover; 45d, balance oil cavity;

[0044] 6, speed change piston; 61, speed change piston main body; 62, speed change piston nut;

[0045] 7, brake piston; 71, brake piston body; 72, brake piston nut;

[0046] 8, knob; 81, inclined chute; 82, positioning pin; 821, wave bead; 8a, inner ring; 8a1, first inner half ring; 8a2, second inner half ring; 8a3, snap spring groove; 8a31, snap spring; 8a4, limiting groove; 8b, outer ring; 8b1, limiting block;

[0047] 9, handlebar;

[0048] 10, universal ball connecting rod;

[0049] 20, bearing;

[0050] 30, connecting pin;

[0051] 40, oil cavity sealing plate;

[0052] 50, oil cavity sealing cover;

[0053] 60, knob outer sleeve. DETAILED DESCRIPTION

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out the objects and advantages thereof and will be understood by practitioners of the art. The following detailed description is presented primarily for the purpose of enabling others to make and use the application. The description of the application herein including the claims and the drawings is not intended to be exhaustive or to limit the application to the precise form disclosed. Modifications and variations are possible in light of the above teachings. It is intended that the scope of the application be defined by the claims appended hereto and their equivalents.

[0055] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same application. It is explicitly contemplated that embodiments described herein can be combined with each other in their individual aspects.

[0056] In order to make the technical personnel in the technical field better understand the application scheme, the technical scheme in the embodiment of the application will be described clearly and completely below in conjunction with the drawings.

[0057] Reference Figures 1 to 11 The application provides a hydraulic brake and speed change integrated handle, comprising: a knob seat 1, a top cover 2, a handle 3, a speed change oil cylinder 4, a brake oil cylinder 5, a speed change piston 6, a brake piston 7 and a knob 8.

[0058] The variable speed oil cylinder 4 and the brake oil cylinder 5 are arranged inside the handlebar 9, the knob base 1 is sleeved on the handlebar 9 and is fixed on the handlebar 9 in connection with the variable speed oil cylinder 4 and the brake oil cylinder 5, the variable speed piston 6 is sealingly and movably connected to the variable speed oil cylinder 4, and the brake piston 7 is sealingly and movably connected to the brake oil cylinder 5.

[0059] The handle 3 is movably connected to one end of the knob base 1, and a universal ball connecting rod 10 is movably connected to the end of the handle 3, and the universal ball head of the universal ball connecting rod 10 is movably connected to the brake piston 7; the knob 8 is movably sleeved on the knob base 1 and is movably connected to the variable speed piston 6, and rotating the knob 8 can make the variable speed piston 6 move up and down.

[0060] In the embodiment, the variable speed oil cylinder 4 and the brake oil cylinder 5 are arranged in the handlebar 9 and are fixed on the handlebar 9 in connection with the knob base 1, for example, the variable speed oil cylinder 4 and the brake oil cylinder 5 have hole structures such as screw holes that can be connected to the knob base 1, and during installation, the variable speed oil cylinder 4 and the brake oil cylinder 5 are first arranged in the handlebar 9, then screws or other connecting members are sequentially inserted through the knob base 1, the handlebar 9, and then connected to the variable speed oil cylinder 4 and the brake oil cylinder 5. Of course, before installation, the variable speed oil cylinder 4 and the brake oil cylinder 5 are connected and arranged in the oil pipe inside the handlebar 9, which is obvious to those skilled in the art and will not be described in detail. The handle 3 is movably connected to one end of the knob base 1 and the other end faces one side, achieving a movable structure, and more specifically, a torsional spring or a spring piece or the like can be arranged at the connection to assist in resetting, a universal ball connecting rod 10 is movably connected to the end of the handle 3 near the connection between the handle 3 and the knob base 1, and then the universal ball connecting rod 10 and the brake piston 7 are movably connected, so that when the handle 3 is gripped, the direction of the force can be changed through the universal ball connecting rod 10 to drive the brake piston 7 to press the brake oil cylinder 5, achieving the purpose of controlling the brake. The knob is movably sleeved on the knob base 1 and is movably connected to the variable speed piston 6, and rotating the knob 8 can press the variable speed piston 6 to press the brake oil cylinder 5, achieving the purpose of controlling the variable speed. For example, the knob has an inclined side wall that can extend into the knob base 1, the inclined side wall abuts against the variable speed piston 6, and rotating the knob 8 can press the variable speed piston 6, etc. It is worth mentioning that the top cover 2 can only have a gap for the handle 3 to move, and the rest is sealed, and two connecting columns are arranged on the knob base 1, the two connecting columns are provided with through holes facing the gap, so that a screwdriver or the like can be inserted into the gap to fix the top cover 2, and the above structure can achieve good dustproof effect.

[0061] In some embodiments, the hydraulic brake and variable speed integrated handle further comprises: a bearing 20 and a connecting pin 30.

[0062] The side wall of the knob seat 1 and the side wall of the handlebar 9 are provided with through holes, and the inner side wall of the knob 8 is further provided with an inclined sliding groove 81. One end of the connecting pin 30 is connected to the gear shift piston 6, and the other end sequentially passes through the through hole of the handlebar 9 and the through hole of the knob seat 1 to connect the bearing 20, which is clamped with the inclined sliding groove 81. The through hole of the handlebar 9 and the through hole of the knob seat 1 are not smaller than the movement stroke of the connecting pin 30.

[0063] In the embodiment, the knob seat 1 is connected to the gear shift piston 6 through the inclined sliding groove 81 and the bearing 20 and the connecting pin 30. As shown in the figure, when the knob seat 1 is rotated, the bearing 20 can roll along the inclined sliding groove 81, and the gear shift piston 6 is driven to move upward or downward, so as to achieve the purpose of controlling the gear shift. Figure 9

[0064] In some embodiments, the outer side wall of the knob seat 1 is provided with a positioning sliding groove 11 along the circumference thereof, and the bottom of the positioning sliding groove 11 is provided with a plurality of positioning holes 111. The knob 8 is provided with a positioning pin 82, and the end of the positioning pin 82 is provided with an elastically compressible wave bead 821. When the knob 8 is rotated, the wave bead 821 can be clamped into the positioning hole 111.

[0065] In the embodiment, the bottom of the positioning sliding groove 11 is provided with a plurality of positioning holes 111, the knob 8 is provided with a positioning pin 82, and the end of the positioning pin 82 is provided with an elastically compressible wave bead 821. When the knob 8 is rotated, the wave bead 821 can be clamped into the positioning hole 111. At this time, only the stroke of the gear shift position, that is, the rotation angle of the knob 8, needs to be adjusted to match the position of the positioning hole 111, so as to achieve the purpose of gear feedback. That is, when the user adjusts to a certain gear position, the wave bead 821 can be clamped into the positioning hole 111, and the user obtains feedback in the sense of touch, thereby enhancing the experience and accuracy of the user in adjusting the speed.

[0066] In some embodiments, the knob 8 comprises a first inner half ring 8a1, a second inner half ring 8a2 and an outer ring 8b. The first inner half ring 8a1 and the second inner half ring 8a2 are spliced to form an inner ring 8a. The inclined sliding groove 81 and the positioning pin 82 are arranged on the inner side wall of the inner ring 8a. The outer side wall of the inner ring 8a is provided with a ring of snap spring grooves 8a3 and a limiting groove 8a4 extending downward from the top. The inner side wall of the outer ring 8b is provided with a limiting block 8b1 matched with the limiting groove 8a4.

[0067] The knob seat 1 is in the shape of a cylinder as a whole, and the bottom of the outer side wall thereof is provided with a limiting ring 12.

[0068] The first inner half ring 8a1 and the second inner half ring 8a2 are spliced to form an inner ring 8a, which is sleeved on the knob seat 1. The bottom of the first inner half ring 8a1 and the bottom of the second inner half ring 8a2 abut against the limiting ring 12. The outer ring 8b is sleeved on the inner ring 8a from above, and the limiting block 8b1 is clamped with the limiting groove 8a4. The inner ring 8a and the outer ring 8b are fixed as a whole by clamping the limiting block 8b1 into the limiting groove 8a4 through the snap spring 8a31.​

[0069] In the embodiment, the knob 8 is divided into two main parts, an inner ring 8a and an outer ring 8b, and the inner ring 8a is further divided into a first inner half ring 8a1 and a second inner half ring 8a2, so as to facilitate assembly. It is worth mentioning that the first inner half ring 8a1, the second inner half ring 8a2 and the outer ring 8b are assembled into an integral whole, and the knob 8 can only rotate and cannot move up and down through the cooperation of the limiting ring 12 and the snap spring 8a31.

[0070] Referring to Figure 3 and Figure 11 In some embodiments, the variable speed oil cylinder 4 and the brake oil cylinder 5 are connected to each other through an oil cylinder seat to form an integrated oil cylinder, and the oil cylinder seat is provided with a connecting lug 45a, and the knob seat 1, the handlebar 9 and the connecting lug 45a are fixed through screws.

[0071] In the embodiment, the variable speed oil cylinder 4 and the brake oil cylinder 5 are arranged as an integrated oil cylinder, which is convenient for installation, and at the same time, a balance oil chamber 45d can be arranged at the connection of the two oil cylinders. For example, the hydraulic brake and variable speed integrated handlebar further comprises an oil chamber sealing plate 40 made of elastic material and an oil chamber sealing cover 50 with air holes; the variable speed oil cylinder 4 and the brake oil cylinder 5 are both columnar oil cylinders, and a balance oil groove 45b is arranged between the outer side wall of the variable speed oil cylinder 4 and the outer side wall of the brake oil cylinder 5, the bottom of the balance oil groove 45b is provided with an oil communication hole communicating with the variable speed oil cylinder 4, the oil chamber sealing plate 40 covers and seals the balance oil groove 45b, and the oil chamber sealing cover 50 covers the balance oil groove 45b, so that the balance oil chamber 45d is formed between the balance oil groove 45b and the oil chamber sealing cover 50. In this way, the balance oil chamber 45d can balance the oil inside when the air temperature changes. It is worth mentioning that the oil communication hole is arranged slightly below the initial position of the variable speed piston 6, at this time, when the variable speed piston 6 is at the initial position, due to thermal expansion and contraction, the oil can overflow to the balance oil chamber 45d or flow back from the balance oil chamber 45d, and the oil will not be squeezed into the balance oil chamber 45d when the variable speed piston 6 moves.

[0072] In some embodiments, the hydraulic brake and variable speed integrated handlebar further comprises an oil cylinder cover 45c; the variable speed piston 6 comprises a variable speed piston body 61 and a variable speed piston nut 62, and the brake piston 7 comprises a brake piston body 71 and a brake piston nut 72,

[0073] The variable speed piston body 61 is inserted into the variable speed oil cylinder 4 at the end with a larger diameter, the brake piston body 71 is inserted into the brake oil cylinder 5 at the end with a larger diameter, the oil cylinder cover 45c covers the variable speed oil cylinder 4 and the brake oil cylinder 5, the other end of the variable speed piston body 61 passes through the oil cylinder cover 45c to connect the variable speed piston nut 62, and the other end of the brake piston body 71 passes through the oil cylinder cover 45c to connect the brake piston nut 72;

[0074] The ball head of the universal ball connecting rod 10 is movably connected with the brake piston nut 72, and the connecting pin 30 connects the gear shift piston nut 62.

[0075] In the embodiment, the structure of the gear shift piston 6 and the brake piston 7 can facilitate installation.

[0076] In some embodiments, a first guide structure is arranged between the gear shift piston body 61 and the cylinder cover 45c, and a second guide structure is arranged between the brake piston body 71 and the cylinder cover 45c.

[0077] In the embodiment, the part of the gear shift piston body 61 in contact with the cylinder cover 45c can be arranged in a D shape, i.e., the cross section is in a D shape.

[0078] In some embodiments, the hydraulic brake and gear shift integrated handle further comprises a knob sleeve 60 sleeved with the knob.

[0079] In some embodiments, the utility model further provides a bicycle, which comprises the hydraulic brake and gear shift integrated handle according to any one of the above.

[0080] Obviously, the above-described embodiments are only some of the embodiments of the utility model, but not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some technical features. Any equivalent structure made by referring to the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection range of the utility model.

Claims

1. A hydraulic brake and gear shift integrated handle, characterized by, The hydraulic brake and gear integrated handle comprises a knob base, a top cover, a handle, a gear cylinder, a brake cylinder, a gear piston, a brake piston and a knob. The gear cylinder and the brake cylinder are arranged in the handle, the knob base is sleeved on the handle and fixed on the handle in connection with the gear cylinder and the brake cylinder, the gear piston is sealingly and movably connected with the gear cylinder, and the brake piston is sealingly and movably connected with the brake cylinder. One end of the handle is movably connected with the knob base, and a universal ball connecting rod is movably connected with the handle near the one end, and a universal ball head of the universal ball connecting rod is movably connected with the brake piston. The knob is movably sleeved on the knob base and movably connected with the gear piston, and the knob can make the gear piston move up and down when the knob is rotated.

2. The hydraulic brake and transmission integrated handle according to claim 1, wherein The hydraulic brake and gear integrated handle further comprises a bearing and a connecting pin. The side wall of the knob base and the side wall of the handle are provided with through holes, the inner side wall of the knob is further provided with an inclined sliding groove, one end of the connecting pin is connected with the gear piston, and the other end of the connecting pin passes through the through holes of the handle and the knob base in sequence and is connected with the bearing, the bearing is clamped with the inclined sliding groove, and the through holes of the handle and the knob base are not smaller than the movement stroke of the connecting pin.

3. The hydraulic brake and transmission integrated handle according to claim 2, wherein The outer side wall of the knob base is provided with a positioning sliding groove along the circumference thereof, the bottom of the positioning sliding groove is provided with a plurality of positioning holes, the knob is provided with a positioning pin, and the end of the positioning pin is provided with a wave bead capable of being elastically compressed.

4. The hydraulic brake and transmission integrated handle according to claim 3, wherein The knob comprises a first inner half ring, a second inner half ring and an outer ring, the first inner half ring and the second inner half ring are spliced to form an inner ring, the inclined sliding groove and the positioning pin are arranged on the inner side wall of the inner ring, the outer side wall of the inner ring is provided with a ring of snap spring grooves at the top and is provided with a limiting groove extending downward from the top, and the inner side wall of the outer ring is provided with a limiting block matched with the limiting groove. The knob base is in the shape of a cylinder as a whole, and the bottom of the outer side wall of the knob base is provided with a ring of limiting rings. The first inner half ring and the second inner half ring are spliced to form the inner ring, the inner ring is sleeved on the knob base, the bottom of the first inner half ring and the bottom of the second inner half ring abut against the limiting rings, the outer ring is sleeved on the inner ring from above, the limiting block is clamped with the limiting groove, and the inner ring and the outer ring are fixed as a whole by clamping the limiting block into the limiting groove through the snap spring.

5. The hydraulic brake and transmission integrated handle according to claim 1, wherein The gear cylinder and the brake cylinder are connected with each other through a cylinder base to form an integrated cylinder, the cylinder base is provided with a connecting lug, and the knob base, the handle and the connecting lug are fixed through screws.

6. The hydraulic brake and transmission integrated handle according to claim 1, wherein The hydraulic brake and gear integrated handle further comprises an oil cavity sealing plate made of elastic material and an oil cavity sealing cover provided with air holes. The gear cylinder and the brake cylinder are both columnar cylinders, and a balance oil groove is arranged between the outer side wall of the gear cylinder and the outer side wall of the brake cylinder, the bottom of the balance oil groove is provided with an oil passage hole connected with the gear cylinder, the oil cavity sealing plate covers and seals the balance oil groove, and the oil cavity sealing cover covers the balance oil groove to form a balance oil cavity between the balance oil groove and the oil cavity sealing cover.

7. The hydraulic brake and transmission integrated handle according to claim 2, wherein The hydraulic brake and gear integrated handle further comprises a cylinder cover; the gear piston comprises a gear piston body and a gear piston nut, and the brake piston comprises a brake piston body and a brake piston nut, the larger-diameter end of the gear piston body is inserted into a gear cylinder, the larger-diameter end of the brake piston body is inserted into a brake cylinder, the gear cylinder and the brake cylinder are covered by the cylinder cover, the other end of the gear piston body is connected to the gear piston nut through the cylinder cover, and the other end of the brake piston body is connected to the brake piston nut through the cylinder cover; the ball head of the universal ball connecting rod is movably connected to the brake piston nut, and the connecting pin connects the gear piston nut.

8. The hydraulic brake and transmission integrated handle according to claim 7, wherein a first guide structure is arranged between the gear piston body and the cylinder cover, and a second guide structure is arranged between the brake piston body and the cylinder cover.

9. The hydraulic brake and transmission integrated handle according to claim 7, wherein The hydraulic brake and gear integrated handle further comprises a knob cover, which covers the knob.

10. A bicycle characterized in that, The bicycle comprises the hydraulic brake and gear integrated handle according to any one of claims 1 to 9.

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