Hydraulic braking and speed changing integrated handlebar and bicycle

Abstract

The invention 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 invention relates to the technical field of bicycle handlebars, and in particular to a hydraulic brake and speed-shifting integrated handlebar and a bicycle. Background Art

[0002] Existing bicycle oil brake handles almost all have exposed structures such as brackets, handles, oil tanks, oil pipes, etc., which are easily contaminated and difficult to clean.

[0003] The Chinese patent with publication number CN115892320A discloses an oil brake handle, including: an oil brake knob, a brake oil cylinder, a piston return spring, a piston, and a bearing; the brake oil cylinder has an oil storage chamber, the top of the oil storage chamber has a cavity opening, and the bottom has an oil outlet hole; one end of the piston is inserted from the cavity opening, the cavity opening is sealed and movably connected to the oil storage chamber, and 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 oil storage chamber, one end of which abuts against the bottom of the oil storage chamber, and the other end abuts against the piston; the oil brake knob has an inclined portion abutting against the bearing, and when the oil brake knob is turned, the inclined portion squeezes the bearing, drives the piston to move downward, and causes the brake oil in the oil storage chamber to be squeezed out from the oil outlet hole. Although the components on the oil brake handle are arranged inside the oil brake knob, which solves the problem of easy contamination, there is no space to arrange the speed change structure, and the speed adjustment structure can only be arranged on the other handle, resulting in that it cannot be used on bicycles that need speed change adjustment on both handles. Summary of the invention

[0004] In view of this, the present invention provides a hydraulic brake and gear shifting integrated handlebar and a bicycle, which are used to solve the problems in the above-mentioned background technology.

[0005] To achieve one or part or all of the above purposes or other purposes, the present invention provides a hydraulic brake and shift integrated handle, including: a knob seat, a top cover, a handle, a shift oil cylinder, a brake oil cylinder, a shift piston, a brake piston and a knob;

[0006] The shift oil cylinder and the brake oil cylinder are both arranged inside the handlebar, the knob seat is sleeved on the handlebar, and is connected and fixed to the handlebar with the shift oil cylinder and the brake oil cylinder, the shift piston is sealed and movably connected to the shift oil cylinder, and the brake piston is sealed and movably connected to the brake oil cylinder.

[0007] One end of the handle is movably connected to the knob seat, and a universal ball connecting rod is movably connected near one end of the handle, and the universal ball head of the universal ball connecting rod is movably connected to the brake piston; the knob is movably sleeved on the knob seat and is movably connected to the speed shift piston, and the speed shift piston can be moved up and down when the knob is rotated.

[0008] Furthermore, the hydraulic brake and gear shift integrated handle further comprises: a bearing and a connecting pin;

[0009] The side walls of the knob seat and the handlebar are both provided with through holes, and the inner wall of the knob is also provided with an inclined slide groove. One end of the connecting pin is connected to the speed change piston, and the other end passes through the through hole of the handlebar and the through hole of the knob seat in sequence to connect to the bearing, and the bearing is clamped with the inclined slide groove; the through hole of the handlebar and the through hole of the knob seat are not smaller than the movement stroke of the connecting pin.

[0010] Furthermore, the outer wall of the knob seat is provided with a positioning groove along its circumference, and a plurality of positioning holes are provided at the bottom of the positioning groove. The knob is provided with a positioning pin, and an elastically compressible ball is provided at the end of the positioning pin. When the knob is rotated, the ball can be stuck in 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 the inner ring, the inclined slide groove and the positioning pin are both arranged on the inner side wall of the inner ring, the outer side wall of the inner ring is provided with a circle of retaining ring groove and a limiting groove extending downward from the top at the top, and the inner side wall of the outer ring is provided with a limiting block adapted to the limiting groove;

[0012] The knob seat is cylindrical in shape as a whole, and has a limiting ring at the bottom of its outer wall;

[0013] The first inner half ring and the second inner half ring are spliced ​​together to form an inner ring that is sleeved on the knob seat, the bottom of the first inner half ring and the bottom of the second inner half ring both abut against the limiting ring, the outer ring sleeves the inner ring from above and the limiting block is clamped in the limiting groove, and the inner ring and the outer ring are fixed into a whole by a retaining spring that is clamped in the limiting groove.

[0014] Furthermore, the shift cylinder and the brake cylinder are connected to each other via a cylinder seat to form an integrated cylinder, and the cylinder seat is provided with a connecting ear, and the knob seat, the handlebar and the connecting ear are fixed by screws.

[0015] Furthermore, the hydraulic brake and gear shift integrated handle further comprises: an oil chamber sealing plate made of elastic material and an oil chamber sealing cover having air holes;

[0016] The shift oil cylinder and the brake oil cylinder are both columnar oil cylinders, and a balancing oil groove is provided between the outer wall of the shift oil cylinder and the outer wall of the brake oil cylinder, and the bottom of the balancing oil groove is provided with an oil through hole connected to the shift oil cylinder, the oil chamber sealing plate covers the sealed balancing oil groove, and the oil chamber sealing cover covers the balancing oil groove so that a balancing oil chamber is formed between the balancing oil groove and the oil chamber sealing cover.

[0017] Furthermore, the hydraulic brake shift integrated handle also includes: a cylinder cover; the shift piston includes a shift piston body and a shift piston nut; the brake piston includes a brake piston body and a brake piston nut;

[0018] The end of the shift piston body with a larger diameter is inserted into the shift oil cylinder, and the end of the brake piston body with a larger diameter is inserted into the brake oil cylinder. The cylinder cover covers the shift oil cylinder and the brake oil cylinder. The other end of the shift piston body passes through the cylinder cover to connect to the shift piston nut, and the other end of the brake piston body passes through the cylinder cover to connect to the brake piston nut.

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

[0020] Furthermore, a first guide structure is provided between the speed-changing piston body and the oil cylinder cover, and a second guide structure is provided between the brake piston body and the oil cylinder cover.

[0021] Furthermore, the integrated hydraulic brake and gear shift handle further comprises: a knob cover, and the knob cover is sleeved on the knob.

[0022] In order to achieve one, part or all of the above purposes or other purposes, the present invention further provides a bicycle, which includes the hydraulic brake and gear shifting integrated handlebar as described in any one of the above.

[0023] Implementing the embodiments of the present invention will have the following beneficial effects:

[0024] After adopting the above hydraulic brake and speed-shifting integrated handlebar, since the speed-shifting oil cylinder and the brake oil cylinder are both arranged inside the handlebar, the oil pipe can be arranged through the handlebar, so that the exterior is easy to clean and the interior is not easily polluted. In addition, since the hydraulic brake and speed-shifting integrated handlebar is provided with both speed-shifting adjustment and brake adjustment, on a bicycle requiring dual speeds, only the left and right handlebars need to be provided with similar structures, so that the left and right handlebars can both be adjusted in speed. It is not only suitable for ordinary bicycles, but also very suitable for some relatively high-requirement mountain bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] in:

[0027] Figure 1 An exploded view of the structure of a hydraulic brake and gear shifting integrated handle in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0030] Figure 4 It is a structural schematic diagram of a hydraulic brake and gear shifting integrated handle in one embodiment of the present invention;

[0031] Figure 5 for Figure 4 Another perspective of

[0032] Figure 6 for Figure 4 Schematic diagram of the middle AA section;

[0033] Figure 7 for Figure 5 Schematic diagram of the middle BB section;

[0034] Figure 8 This is a schematic diagram of the structure of the inner ring in one embodiment of the present invention;

[0035] Fig. 9 for Figure 8 Another perspective of

[0036] Fig.10 It is a structural schematic diagram of a knob seat in one embodiment of the present invention;

[0037] Fig.11 It is a schematic diagram of the structure of a speed change cylinder and a brake cylinder in one embodiment of the present invention.

[0038] Reference numerals:

[0039] 1. Knob seat; 11. Positioning slide groove; 111. Positioning hole; 12. Limiting ring;

[0040] 2. Top cover;

[0041] 3. Handle;

[0042] 4. Speed-changing cylinder;

[0043] 5. Brake oil cylinder; 45a. Connecting ear; 45b. Balance oil groove; 45c. Oil cylinder cover; 45d. Balance oil chamber;

[0044] 6. Speed ​​change piston; 61. Speed ​​change piston body; 62. Speed ​​change piston nut;

[0045] 7. Brake piston; 71. Brake piston body; 72. Brake piston nut;

[0046] 8, knob; 81, inclined slide groove; 82, positioning pin; 821, ball; 8a, inner ring; 8a1, first inner semi-ring; 8a2, second inner semi-ring; 8a3, retaining spring groove; 8a31, retaining spring; 8a4, limiting groove; 8b, outer ring; 8b1, limiting block;

[0047] 9. Handlebars;

[0048] 10. Universal ball connecting rod;

[0049] 20. Bearings;

[0050] 30. Connecting pin;

[0051] 40. Oil chamber sealing plate;

[0052] 50. Oil chamber sealing cover;

[0053] 60. Knob coat. DETAILED DESCRIPTION

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0057] Reference Figures 1 to 11 The present invention provides a hydraulic brake and gear shift integrated handle, comprising: a knob seat 1, a top cover 2, a handle 3, a gear shift cylinder 4, a brake cylinder 5, a gear shift piston 6, a brake piston 7 and a knob 8;

[0058] The shift cylinder 4 and the brake cylinder 5 are both arranged inside the handlebar 9. The knob seat 1 is sleeved on the handlebar 9 and connected and fixed to the handlebar 9 with the shift cylinder 4 and the brake cylinder 5. The shift piston 6 is sealed and movably connected to the shift cylinder 4. The brake piston 7 is sealed and movably connected to the brake cylinder 5.

[0059] One end of the handle 3 is movably connected to the knob seat 1, and a universal ball connecting rod 10 is movably connected near one 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 seat 1 and is movably connected to the speed shift piston 6, and when the knob 8 is rotated, the speed shift piston 6 can move up and down.

[0060] In this embodiment, the shift oil cylinder 4 and the brake oil cylinder 5 are both installed in the handlebar 9 and then fixed to the handlebar 9 with the knob seat 1. For example, the shift oil cylinder 4 and the brake oil cylinder 5 have a hole structure that can be connected to the knob seat 1, such as a screw hole, etc. During installation, the shift oil cylinder 4 and the brake oil cylinder 5 are first installed in the handlebar 9, and then the screws and other connecting parts are passed through the knob seat 1 and the handlebar 9 in sequence, and then connected to the shift oil cylinder 4 and the brake oil cylinder 5. Of course, before installation, the shift oil cylinder 4 and the brake oil cylinder 5 are first connected to the oil pipe arranged inside the handlebar 9. This is something that can be obviously understood by those skilled in the art and will not be repeated. The handle 3 is movably connected to the knob seat 1 at one end and the other end is facing one side, so as to achieve a movable structure. More specifically, a torsion spring or a spring sheet can be provided at the connection to assist in resetting. The end near the handle 3 connected to the knob seat 1 can be movably connected to a universal ball connecting rod 10, and then the universal ball connecting rod 10 and the brake piston 7 are movably connected. In this way, when the handle 3 is grasped, the direction of the force can be changed through the universal ball connecting rod 10, and the brake piston 7 is driven to squeeze the brake cylinder 5 to achieve the purpose of controlling the brake. The knob is movably sleeved on the knob seat 1 and movably connected to the speed change piston 6. When the knob 8 is rotated, the speed change piston 6 can be pressed down to squeeze the brake cylinder 5 to achieve the purpose of controlling the speed change. For example, the knob has an inclined side wall that can extend into the knob seat 1, and this inclined side wall abuts against the speed change piston 6. When the knob 8 is rotated, the speed change piston 6 can be pressed down. It is worth mentioning that the top cover 2 may only have a gap for the handle 3 to move, and the rest is sealed, and two connecting columns are arranged on the knob seat 1, and the two connecting columns are provided with through holes facing the gap, so that tools such as screwdrivers can be inserted into the gap to fix the top cover 2. The above structural setting can achieve a good dust-proof effect.

[0061] In some embodiments, the hydraulic brake and gear shifter integrated handle further includes: a bearing 20 and a connecting pin 30;

[0062] The side walls of the knob seat 1 and the handlebar 9 are both provided with through holes, and the inner wall of the knob 8 is also provided with an inclined slide groove 81. One end of the connecting pin 30 is connected to the speed change piston 6, and the other end passes through the through hole of the handlebar 9 and the through hole of the knob seat 1 in sequence to connect to the bearing 20, and the bearing 20 is clamped with the inclined slide 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 this embodiment, the knob seat 1 is provided with an inclined slot 81, and then connected to the speed change piston 6 through the bearing 20 and the connecting pin 30. Fig. 9 As shown, this structure can make the bearing 20 roll along the inclined groove 81 when the knob seat 1 is rotated, and at the same time drive the speed change piston 6 to move upward or downward to achieve the purpose of controlling the speed change.

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

[0065] In this embodiment, the bottom of the positioning slot 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 ball 821. When the knob 8 is rotated, the ball 821 can be inserted into the positioning hole 111. At this time, the purpose of gear feedback can be achieved by only adjusting the travel of the gear position, that is, the travel of the rotation angle of the knob 8 matches the position of the positioning hole 111, that is, when the user adjusts to a certain gear position, the ball 821 can be inserted into the positioning hole 111, and the user can get feedback in terms of hand feel, thereby enhancing the user's experience and accuracy of speed regulation.

[0066] In some embodiments, the knob 8 includes a first inner half ring 8a1, a second inner half ring 8a2 and an outer ring 8b, wherein the first inner half ring 8a1 and the second inner half ring 8a2 are spliced ​​to form the inner ring 8a, the inclined slide groove 81 and the positioning pin 82 are both arranged on the inner side wall of the inner ring 8a, the outer side wall of the inner ring 8a is provided with a circle of retaining ring groove 8a3 and a limiting groove 8a4 extending downward from the top, and the inner side wall of the outer ring 8b is provided with a limiting block 8b1 adapted to the limiting groove 8a4;

[0067] The knob seat 1 is cylindrical in shape as a whole, and a limiting ring 12 is provided at the bottom of its outer wall;

[0068] The first inner half ring 8a1 and the second inner half ring 8a2 are spliced ​​together to form an inner ring 8a which is sleeved on the knob seat 1, and the bottom of the first inner half ring 8a1 and the bottom of the second inner half ring 8a2 both abut against the limiting ring 12, and 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, and the inner ring 8a and the outer ring 8b are fixed into a whole by the retaining spring 8a31 which is clamped into the limiting groove 8a4.

[0069] In this 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 semi-ring 8a1 and a second inner semi-ring 8a2, so as to facilitate assembly. It is worth mentioning that the first inner semi-ring 8a1, the second inner semi-ring 8a2 and the outer ring 8b are assembled to form a whole, and through the cooperation of the limit ring 12 and the retaining spring 8a31, the knob 8 can only rotate but not move up and down.

[0070] Reference Figure 3 and Fig.11 In some embodiments, the shift cylinder 4 and the brake cylinder 5 are interconnected through a cylinder seat to form an integrated cylinder, and the cylinder seat is provided with a connecting ear 45a, and the knob seat 1, the handlebar 9 and the connecting ear 45a are fixed by screws.

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

[0072] In some embodiments, the hydraulic brake shifter further comprises: a cylinder cover 45c; a shift piston 6 comprising a shift piston body 61 and a shift piston nut 62; a brake piston 7 comprising a brake piston body 71 and a brake piston nut 72;

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

[0074] The ball head of the universal ball connecting rod 10 is movably connected to the brake piston nut 72 , and the connecting pin 30 is connected to the speed change piston nut 62 .

[0075] In the present embodiment, this structural arrangement of the speed change piston 6 and the brake piston 7 can be easily installed. In addition, the piston can be arranged to be hollow, so as to facilitate refueling after screwing off the speed change piston nut 62 or the brake piston nut 72, without the need to disassemble the entire piston.

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

[0077] In this embodiment, the portion where the shift piston body 61 and the cylinder cover 45c contact each other can be set to a D shape, that is, the cross-section is D-shaped. Similarly, there is a D-shaped hole on the cylinder cover 45c. During installation, the shift piston nut 62 has a unique position, which makes it convenient to assemble the connecting pin 30 to connect the shift piston nut 62 to facilitate positioning and installation. The second guide structure on the brake piston body 71 also has a similar effect and will not be repeated here.

[0078] In some embodiments, the hydraulic brake and gear shifting integrated handle further includes: a knob cover 60, which is sleeved with the knob. The knob cover 60 can be made of elastic materials such as rubber and silicone, and can have some anti-skid patterns on the outside to enhance the user's hand feeling and prevent slipping.

[0079] In some embodiments, the present invention further provides a bicycle, comprising any one of the above-mentioned integrated hydraulic brake and shift handlebars.

[0080] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A hydraulic brake and gear shifting integrated handle, characterized in that: include: Knob seat, top cover, handle, shift cylinder, brake cylinder, shift piston, brake piston and knob; The shift oil cylinder and the brake oil cylinder are both arranged inside the handlebar, the knob seat is sleeved on the handlebar, and is connected and fixed to the handlebar with the shift oil cylinder and the brake oil cylinder, the shift piston is sealed and movably connected to the shift oil cylinder, and the brake piston is sealed and movably connected to the brake oil cylinder. One end of the handle is movably connected to the knob seat, and a universal ball connecting rod is movably connected near one end of the handle, and the universal ball head of the universal ball connecting rod is movably connected to the brake piston; the knob is movably sleeved on the knob seat and is movably connected to the speed shift piston, and the speed shift piston can be moved up and down when the knob is rotated.

2. The hydraulic brake and gear shifting integrated handle according to claim 1, characterized in that: The hydraulic brake and gear shift integrated handle also includes: a bearing and a connecting pin; The side walls of the knob seat and the handlebar are both provided with through holes, and the inner wall of the knob is also provided with an inclined slide groove. One end of the connecting pin is connected to the speed change piston, and the other end passes through the through hole of the handlebar and the through hole of the knob seat in sequence to connect to the bearing, and the bearing is clamped with the inclined slide groove; the through hole of the handlebar and the through hole of the knob seat are not smaller than the movement stroke of the connecting pin.

3. The hydraulic brake and gear shifting integrated handle according to claim 2, characterized in that: The outer wall of the knob seat is provided with a positioning groove along its circumference, and a plurality of positioning holes are provided at the bottom of the positioning groove. The knob is provided with a positioning pin, and an elastically compressible ball is provided at the end of the positioning pin. When the knob is rotated, the ball can be stuck in the positioning hole.

4. The hydraulic brake and gear shifting integrated handle according to claim 3, characterized in that: 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 slide groove and the positioning pin are both arranged on the inner side wall of the inner ring, a circle of retaining ring groove and a limiting groove extending downward from the top are arranged on the top of the outer side wall of the inner ring, and a limiting block adapted to the limiting groove is arranged on the inner side wall of the outer ring; The knob seat is cylindrical in shape as a whole, and has a limiting ring at the bottom of its outer wall; The first inner half ring and the second inner half ring are spliced ​​together to form an inner ring that is sleeved on the knob seat, the bottom of the first inner half ring and the bottom of the second inner half ring both abut against the limiting ring, the outer ring sleeves the inner ring from above and the limiting block is clamped in the limiting groove, and the inner ring and the outer ring are fixed into a whole by a retaining spring that is clamped in the limiting groove.

5. The hydraulic brake and gear shifting integrated handle according to claim 1, characterized in that: The speed change oil cylinder and the brake oil cylinder 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 ear, and the knob seat, the handlebar and the connecting ear are fixed by screws.

6. The hydraulic brake and gear shifting integrated handle according to claim 1, characterized in that: The hydraulic brake and gear shift integrated handle also includes: an oil chamber sealing plate made of elastic material and an oil chamber sealing cover with air holes; The shift oil cylinder and the brake oil cylinder are both columnar oil cylinders, and a balancing oil groove is provided between the outer wall of the shift oil cylinder and the outer wall of the brake oil cylinder, and the bottom of the balancing oil groove is provided with an oil through hole connected to the shift oil cylinder, the oil chamber sealing plate covers the sealed balancing oil groove, and the oil chamber sealing cover covers the balancing oil groove so that a balancing oil chamber is formed between the balancing oil groove and the oil chamber sealing cover.

7. The hydraulic brake and gear shifting integrated handle according to claim 2, characterized in that: The hydraulic brake shift integrated handle also includes: a cylinder cover; the shift piston includes a shift piston body and a shift piston nut; the brake piston includes a brake piston body and a brake piston nut. The end of the shift piston body with a larger diameter is inserted into the shift oil cylinder, and the end of the brake piston body with a larger diameter is inserted into the brake oil cylinder. The cylinder cover covers the shift oil cylinder and the brake oil cylinder. The other end of the shift piston body passes through the cylinder cover to connect to the shift piston nut, and the other end of the brake piston body passes through the cylinder cover to connect to the brake piston nut. The ball head of the universal ball connecting rod is movably connected to the brake piston nut, and the connecting pin is connected to the speed change piston nut.

8. The hydraulic brake and gear shifting integrated handle according to claim 7, characterized in that: A first guide structure is provided between the speed change piston body and the oil cylinder cover, and a second guide structure is provided between the brake piston body and the oil cylinder cover.

9. The hydraulic brake and gear shifting integrated handle according to claim 7, characterized in that: The integrated hydraulic brake and gear shift handle further comprises: a knob cover, and the knob cover is sleeved on the knob.

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

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