Control structure, multi-knob control structure and bicycle

Abstract

The invention relates to the technical field of bicycles, and particularly discloses a control structure, a multi-knob control structure and a bicycle, the control structure comprises a knob seat, a first knob, a first variable speed piston and an oil cylinder seat; the oil cylinder seat is mounted in the fixed pipe, a first variable-speed oil cylinder is arranged in the oil cylinder seat, and the first variable-speed piston is sealed and movably connected with the first variable-speed oil cylinder; the knob seat is sleeved on the fixed pipe; the first knob is rotatably sleeved on the knob seat, the first knob is movably connected with the first variable-speed piston, and the variable-speed piston can be driven to move along the axial direction of the first variable-speed oil cylinder by rotating the first knob; the problem that the external structure is disordered due to outward extension of the variable-speed shifting finger of the traditional bicycle is solved, so that the exposed structure of the handlebar part of the bicycle applying the control structure is clean and tidy.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycles, in particular to parts of bicycles. Background Art

[0002] The speed change parts of existing bicycles are basically mounted externally on the handlebars, including the oil cylinder body and oil pipe used for speed adjustment, and the speed change finger lever operated by the user, which are all exposed. The speed change finger lever extends away from the handlebar as a whole, presenting a form of being spaced apart from the handlebar. The above installation method and structural design will cause the external structure of the handlebar to be messy and untidy, which is very easy to cause damage when the bicycle falls or is pulled by other debris. In order to improve the structural neatness and durability of existing bicycles, reduce the number of maintenance times and increase the service life, it is urgent to develop a speed change adjustment structure that can build the speed change oil cylinder into the handlebar and extend the length of the speed change finger lever to a smaller extent, so as to truly realize the internal wiring and neat external structure. Summary of the invention

[0003] In view of this, the present invention provides a control structure, a multi-knob control structure and a bicycle, which are used to solve the technical problems in the above-mentioned background technology.

[0004] To achieve one or part or all of the above purposes or other purposes, the present invention provides: a control structure installed on a fixed pipe for use, the control structure comprising: a knob seat, a first knob, a first speed change piston and a cylinder seat;

[0005] The cylinder seat is installed inside the fixed pipe, a first speed-changing cylinder is arranged inside the cylinder seat, and the first speed-changing piston is sealed and movably connected to the first speed-changing cylinder;

[0006] The knob seat is sleeved on the fixing tube;

[0007] The first knob is rotatably mounted on the knob seat, and the first knob is movably connected to the first speed-changing piston. Rotating the first knob can drive the speed-changing piston to move along the axial direction of the first speed-changing oil cylinder.

[0008] Preferably, the control structure further comprises a first roller and a first connecting pin;

[0009] The side walls of the knob seat and the fixed tube are both provided with a first guide hole, and the inner wall of the first knob is also provided with a first inclined groove. One end of the first connecting pin is connected to the first speed change piston, and the other end passes through the first guide hole to connect to the first roller. The first roller is placed in the first inclined groove and can slide along the length direction of the first inclined groove; the length of the first guide hole is not less than the maximum movement stroke of the first connecting pin.

[0010] Preferably, the outer wall of the knob seat is provided with a first positioning groove along its circumference, a plurality of first positioning holes are provided at the bottom of the first positioning groove, the first knob is provided with a first positioning pin, and a first elastically compressible bead is provided at the end of the first positioning pin, and when the first knob is rotated, the first bead can be inserted into the first positioning hole.

[0011] Preferably, the outer wall of the knob seat is provided with a first annular groove; the first knob comprises a first inner half ring, a second inner half ring, a first outer ring, a first retaining spring and a first anti-slip sleeve;

[0012] The first inner half ring and the second inner half ring are spliced ​​to form a first inner ring, the first inner ring is mounted on the first annular groove through the first clamping ring, and the first annular groove is used to limit the axial movement of the first inner ring;

[0013] The first inclined sliding groove is provided on the inner wall of the first inner ring, the first positioning pin is connected to the side wall of the first inner ring, and the outer wall of the first inner ring is provided with a first limiting groove extending along the axial direction thereof;

[0014] The inner wall of the second outer ring is provided with a first limiting block matched with the first limiting groove, the second outer ring is sleeved on the first inner ring, and the first limiting block matches with the first limiting groove to limit the circumferential rotation of the speed change outer ring;

[0015] The first anti-slip sleeve is sleeved on the first outer ring.

[0016] Preferably, the first speed shift piston includes a push rod, a sealing column and an external tube, the push rod is provided with an axially through oil filling hole, one end of the push rod is provided with a piston part that cooperates with the first speed shift cylinder, the other end of the push rod is connected to the external tube, the external tube is connected to the first connecting pin, and the sealing column is embedded in the end of the oil filling hole away from the first speed shift cylinder.

[0017] A multi-knob control structure, comprising the above control structure, wherein the multi-knob control structure further comprises a second knob and a second speed-changing piston;

[0018] A second speed-changing oil cylinder is disposed on the oil cylinder seat, and the second speed-changing oil cylinder and the first speed-changing oil cylinder are arranged side by side in the oil cylinder seat, and the second speed-changing oil cylinder is sealed and movably connected to the second speed-changing oil cylinder;

[0019] The second knob is rotatably mounted on the knob seat, and the second knob and the first knob are spaced apart along the axial direction of the knob seat. The second knob is movably connected to the second speed change piston. Rotating the second knob can drive the speed change piston to move axially along the second speed change oil cylinder.

[0020] Preferably, the multi-knob control structure further comprises a second roller and a second connecting pin;

[0021] The side walls of the knob seat and the fixed tube are both provided with a second guide hole, and the inner wall of the second knob is also provided with a second inclined groove. One end of the second connecting pin is connected to the second speed change piston, and the other end passes through the second guide hole to connect to the second roller. The second roller is placed in the second inclined groove and can slide along the length direction of the second inclined groove; the length of the second guide hole is not less than the maximum movement stroke of the second connecting pin.

[0022] The outer wall of the knob seat is provided with a second positioning groove along its circumference, and a plurality of second positioning holes are provided at the bottom of the second positioning groove. The second knob is provided with a second positioning pin, and an elastically compressible second bead is provided at the end of the second positioning pin. When the second knob is rotated, the second bead can be inserted into the second positioning hole.

[0023] Preferably, the outer wall of the knob seat is provided with a second annular groove, and the second annular groove and the first annular groove are arranged axially spaced from each other along the knob seat; the second knob comprises a third inner half ring, a fourth inner half ring, a second outer ring, a second retaining spring and a second anti-slip sleeve;

[0024] The third inner half ring and the fourth inner half ring are spliced ​​to form a second inner ring, the second inner ring is mounted on the second annular groove through the second clamping ring, and the second annular groove is used to limit the axial movement of the first inner ring;

[0025] The second inclined sliding groove is provided on the inner wall of the second inner ring, the second positioning pin is connected to the side wall of the first inner ring, and the outer wall of the second inner ring is provided with a second limiting groove extending along the axial direction thereof;

[0026] The inner wall of the second outer ring is provided with a second limiting block matched with the second limiting groove, the second outer ring is sleeved on the second inner ring, and the second limiting block matches with the second limiting groove to limit the circumferential rotation of the speed change outer ring;

[0027] The second anti-slip sleeve is sleeved on the second outer ring.

[0028] A bicycle comprises the above-mentioned multi-knob control structure.

[0029] Implementing the embodiments of the present invention will have the following beneficial effects:

[0030] After adopting the above control structure, the knob seat and the first knob are installed on the fixed tube in a mutually sleeved manner, so that the first knob does not have a structure extending outward compared to the fixed tube. By coaxial sleeve connection, the problem of a messy external structure caused by the outward extension of the gear shifter of a traditional bicycle is solved, so that the exposed structure of the handlebar part of the bicycle using the control structure is neat and tidy, without redundant extension structure, and is not easily damaged by bumps when the bicycle falls, and will not be pulled and entangled by debris, thereby improving the durability and service life of the handlebar part of the bicycle using the control structure, and reducing the maintenance frequency of the control structure by users; BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] in:

[0033] Figure 1 The overall structure of the first embodiment is shown in FIG. Figure 1 ;

[0034] Figure 2 The overall structure of the first embodiment is shown in FIG. Figure 2 ;

[0035] Figure 3 It is an exploded view of the overall structure in the first embodiment;

[0036] Figure 4 It is a cross-sectional view of the overall structure in the first embodiment;

[0037] Figure 5 It is a schematic diagram of the separation of the first knob and the knob seat in the first embodiment;

[0038] Figure 6 This is an exploded view of the first knob in Embodiment 1;

[0039] Figure 7 It is a structural schematic diagram of the knob seat in the first embodiment;

[0040] Figure 8 is a schematic structural diagram of the first inner ring in Embodiment 1;

[0041] Fig. 9 is an exploded view of the first speed-changing piston in the first embodiment;

[0042] Fig.10 It is a schematic diagram of the overall structure in the second embodiment;

[0043] Fig.11 It is an exploded view of the overall structure in the second embodiment;

[0044] Fig.12 for Fig.10 AA section view in;

[0045] Fig.13 It is a schematic diagram of the separation of the first knob, the second knob and the knob seat in the second embodiment;

[0046] Fig.14 This is an exploded view of the second knob in Embodiment 2;

[0047] Fig.15 It is a structural schematic diagram of the knob seat in the second embodiment;

[0048] Fig.16 is a schematic structural diagram of the third inner ring in the second embodiment;

[0049] Fig.17 It is an assembly diagram of the first speed-changing piston, the second speed-changing piston and the cylinder seat in the second embodiment;

[0050] Fig.18 This is a separation diagram of the first speed-changing piston, the second speed-changing piston and the cylinder seat in the second embodiment.

[0051] Reference numerals:

[0052] 1. Knob seat; 101. First annular groove; 102. Second annular groove; 11. First guide hole; 12. Second guide hole; 13. First positioning slot; 130. First positioning hole; 14. Second positioning slot; 140. Second positioning hole;

[0053] 2. first knob; 20. first inclined slide groove; 21. first positioning pin; 210. first wave bead; 22. first inner ring; 220. first limiting groove; 221. first inner semi-ring; 222. second inner semi-ring; 23. first outer ring; 230. first limiting block; 24. first retaining spring; 25. first anti-slip sleeve;

[0054] 3. First speed-changing piston; 30. First connecting pin; 31. First roller; 32. Push rod; 320. Oil filling hole; 321. Piston; 33. Sealing column; 34. External pipe;

[0055] 4. Cylinder seat; 41. First speed-changing cylinder; 42. Second speed-changing cylinder;

[0056] 5. second knob; 50. second inclined slide groove; 51. second positioning pin; 510. second wave ball; 52. second inner ring; 520. second limiting groove; 521. third inner semi-ring; 522. fourth inner semi-ring; 53. second outer ring; 530. second limiting block; 54. second retaining spring; 55. second anti-slip sleeve;

[0057] 6. second speed-changing piston; 60. second connecting pin; 62. second roller;

[0058] 7. Fixed tube; 70. Outer cover;

[0059] 8. Handlebars. DETAILED DESCRIPTION

[0060] 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.

[0061] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment 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.

[0062] 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.

[0063] Embodiment 1:

[0064] As attached Figure 1-9 As shown, the first embodiment of the present invention provides a control structure, which is installed on a fixed pipe 7 for use. The control structure includes: a knob seat 1, a first knob 2, a first speed change piston 3 and a cylinder seat 4;

[0065] The cylinder seat 4 is installed inside the fixed tube 7. A first speed-changing cylinder 41 is arranged inside the cylinder seat 4. The first speed-changing piston 3 is sealed and movably connected to the first speed-changing cylinder 41. The knob seat 1 is sleeved on the fixed tube 7.

[0066] The first knob 2 is rotatably mounted on the knob seat 1 . The first knob 2 is movably connected to the first speed-changing piston 3 . Rotating the first knob 2 can drive the speed-changing piston to move along the axial direction of the first speed-changing oil cylinder 41 .

[0067] Specifically, the fixed tube 7 can be the handle portion of the handlebar 8 of the bicycle, as shown in the attached Figure 1 The fixed tube 7 can also be an extension structure on the handlebar 8 of the bicycle, as shown in the attached Figure 2 As shown; when assembling the control structure, it can be selected according to actual needs. This embodiment only describes the situation where the control structure is assembled on the fixed tube 7 which is the handlebar 8. Specifically, the cylinder seat 4 is fixed to the inside of the fixed tube 7 by bolts by setting connecting ears, threaded holes and other structures; in this embodiment, the knob seat 1 and the first knob 2 both adopt a cylindrical structure, wherein the knob seat 1 is sleeved on the outer wall of the fixed tube 7, and the first knob 2 is coaxially sleeved on the knob seat 1. The coaxially arranged first knob 2 is used to drive the movement of the first speed change piston 3 on the first speed change cylinder 41. Since the knob seat 1 and the first knob 2 are installed on the fixed tube 7 in a mutually sleeved manner, the first knob 2 does not have a structure extending outward compared to the fixed tube 7. By coaxially sleeved, the problem of the messy external structure caused by the outward extension of the speed shift finger of the traditional bicycle is solved, so that the exposed structure of the handlebar 8 part of the bicycle using the control structure is neat and tidy. The redundant extension structure is not easily damaged by collision when the bicycle falls, and at the same time, it will not be pulled and entangled by debris, which improves the durability and service life of the handlebar 8 of the bicycle using the control structure, and reduces the maintenance frequency of the control structure by users; and in this embodiment, the first speed change oil cylinder 41 and the first speed change piston 3 are built in the fixed tube 7, and the oil pipe is arranged in the fixed tube 7 or the handlebar 8 to connect the first speed change oil cylinder 41 and the hydraulic transmission on the bicycle, so as to achieve the structure built-in and internal wiring effect of the control structure, so that the first speed change oil cylinder 41, the first speed change piston 3 and the oil pipe can be protected from damage caused by collision with external objects, and further improve the overall structural neatness and aesthetic effect of the handlebar 8 of the bicycle using the control structure. The first knob 2 is movably sleeved on the knob seat 1 and movably connected with the first speed change piston 3. When the first knob 2 is rotated, the first speed change piston 3 can be pressed down to squeeze the liquid in the first speed change oil cylinder 41 to achieve the purpose of controlling the speed change. For example, an inclined side wall that can extend into the knob seat 1 can be provided in the first knob 2, and the inclined side wall abuts against the first shift piston 3. By utilizing the height difference of the inclined side wall, the first shift piston 3 can be pressed down when the first knob 2 is rotated.

[0068] In this embodiment, the control structure further includes a first roller 31 and a first connecting pin 30;

[0069] The side walls of the knob seat 1 and the side walls of the fixed tube 7 are both provided with a first guide hole 11, and the inner wall of the first knob 2 is also provided with a first inclined groove 20. One end of the first connecting pin 30 is connected to the first speed change piston 3, and the other end passes through the first guide hole 11 to connect to the first roller 31. The first roller 31 is placed in the first inclined groove 20 and can slide along the length direction of the first inclined groove 20; the length of the first guide hole 11 is not less than the maximum movement stroke of the first connecting pin 30.

[0070] In this embodiment, the first knob 2 is provided with a first inclined slot 20, and then connected to the first speed change piston 36 through a first roller 31 and a first connecting pin 30. Fig. 9 As shown, this structure can make the first roller 31 roll along the length direction of the first inclined slot 20 when the first knob 2 is rotated, and at the same time drive the first speed change piston 36 to move upward or downward to achieve the purpose of controlling the speed change.

[0071] See attached Figure 7 The outer wall of the knob seat 1 is provided with a first positioning groove 13 along its circumference, and a plurality of first positioning holes 130 are provided at the bottom of the first positioning groove 13. The first knob 2 is provided with a first positioning pin 21, and an elastically compressible first ball 210 is provided at the end of the first positioning pin 21. When the first knob 2 is rotated, the first ball 210 can be inserted into the first positioning hole 130.

[0072] In this embodiment, a plurality of first positioning holes 130 are provided at the bottom of the first positioning slot 13, a first positioning pin 21 is provided at the first knob 2, and an elastically compressible first wave bead 210 is provided at the end of the first positioning pin 21. When the first knob 28 is rotated, the first wave bead 210 can be inserted into the first positioning hole 130. 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 first knob 28 matches the position of the first positioning hole 130, that is, when the user adjusts to a certain gear position, the first wave bead 210 can be inserted into the first positioning hole 130, and the user can get feedback in terms of hand feel, thereby enhancing the user's experience and accuracy of speed regulation.

[0073] See attached Figure 6 - Attachment Figure 8The outer wall of the knob seat 1 is provided with a first annular groove 101; the first knob 2 comprises a first inner semi-ring 221, a second inner semi-ring 222, a first outer ring 23, a first retaining spring 24 and a first anti-slip sleeve 25; the first inner semi-ring 221 and the second inner semi-ring 222 are spliced ​​to form a first inner ring 22, the first inner ring 22 is mounted on the first annular groove 101 through the first retaining spring 24, and the first annular groove 101 is used to limit the axial movement of the first inner ring 22; the first inclined groove 20 is opened The first positioning pin 21 is arranged on the inner wall of the first inner ring 22, and is connected to the side wall of the first inner ring 22. The outer wall of the first inner ring 22 is provided with a first limiting groove 220 extending along its axial direction; the inner wall of the second outer ring 53 is provided with a first limiting block 230 cooperating with the first limiting groove 220, the second outer ring 53 is sleeved on the first inner ring 22, and the first limiting block 230 cooperates with the first limiting groove 220 to limit the circumferential rotation of the speed change outer ring; the first anti-slip sleeve 25 is sleeved on the first knob 2.

[0074] Specifically, the first inner half ring 221 and the second inner half ring 222 are spliced ​​together to form the first inner ring 22, and the outer wall of the first inner ring 22 is provided with a retaining ring groove, and the first retaining ring 24 is embedded in the retaining ring groove of the first inner ring 22, so as to restrict the first inner half ring 221 and the second inner half ring 222 in the first annular groove 101; the first inner half ring 221 and the second inner half ring 222 are separated from each other and spliced ​​together to form the first inner ring 22, and the first positioning pin 21 with the first wave bead 210 is connected to the side wall of the first inner ring 22, and then The first retaining spring 24 and the first outer ring 23 are externally covered and fixed, which facilitates the assembly of the control structure and improves the overall structural stability; the first annular groove 101 on the knob seat 11 allows the first knob 22 to only rotate relative to the knob seat 11 but not move up and down, thereby achieving stable driving of the first speed change piston 33; and in order to facilitate users to control the first knob 22 and improve the grip feel, in this embodiment, a first anti-slip sleeve 25 is connected to the outer shell of the first knob 22, and the first anti-slip sleeve 25 is made of rubber material.

[0075] See attached Fig. 9 The first speed shift piston 3 includes a push rod 32, a sealing column 33 and an external tube 34. The push rod 32 is provided with an axially through-going oil filling hole 320. One end of the push rod 32 is provided with a piston portion 321 that cooperates with the first speed shift cylinder 41. The other end of the push rod 32 is connected to the external tube 34. The external tube 34 is connected to the first connecting pin 30. The sealing column 33 is embedded in the end of the oil filling hole 320 away from the first speed shift cylinder 41.

[0076] In order to facilitate the replenishment of liquid inside the first speed shift cylinder 415, an oil filling hole 320 is set in the push rod 32 to connect the first speed shift cylinder 41 and the outside. The sealing column 33 is threadedly connected at the end of the oil filling hole 320 away from the piston part 321, and a plurality of sealing rings are provided on the outer wall of the sealing column 33. The outer wall of the sealing column 33 and the inner wall of the oil filling hole 320 are sealed by the plurality of sealing rings. A covering outer cover 70 can also be provided at the end of the fixed tube 7 to prevent the first speed shift piston 3 and the cylinder seat 4 from being exposed.

[0077] Embodiment 2:

[0078] As attached Figure 10-18 As shown, the second embodiment of the present invention further discloses a multi-knob control structure, including the control structure disclosed in the first embodiment, and the multi-knob control structure further includes a second knob 5 and a second speed-changing piston 6;

[0079] A second speed-changing oil cylinder 42 is provided on the oil cylinder seat 4. The second speed-changing oil cylinder 42 and the first speed-changing oil cylinder 41 are arranged side by side in the oil cylinder seat 4. The second speed-changing oil cylinder 42 is sealed and movably connected with the second speed-changing oil cylinder 42.

[0080] The second knob 5 can be rotatably mounted on the knob seat 1, and the second knob 5 and the first knob 2 are axially spaced apart from each other along the knob seat 1. The second knob 5 is movably connected to the second speed shift piston 6. Rotating the second knob 5 can drive the speed shift piston to move axially along the second speed shift cylinder 42.

[0081] The connection method of the second knob 5 and the second speed-changing piston 6 in this embodiment adopts the same connection method as the first knob 2 and the first speed-changing piston 3 in the first embodiment, which will not be repeated here. Through the second knob 5 and the first knob 2 arranged side by side, multiple speed-changing adjustment options are provided to the user for bicycle transmissions with different speed-changing adjustments; the lengths of the second knob 5 and the first knob 2 in this embodiment are different, so that the user can distinguish the two knobs by feel and realize the control adjustment of different knobs. In this embodiment, a second speed-changing oil cylinder 42 is arranged in the oil cylinder seat 4 to connect the bicycle transmission through an oil pipe, and then the second knob 5 controls the second speed-changing piston 6 to squeeze the liquid in the second speed-changing oil cylinder 42, so as to realize multiple speed-changing adjustments different from the speed-changing adjustment of the first knob 2. It should also be noted that in other embodiments, a multi-knob control structure with multiple knobs such as a third knob and a fourth knob can also be provided, and this embodiment will not be exhaustive one by one.

[0082] See attached Fig.12 , the multi-knob control structure also includes a second roller 62 and a second connecting pin 60;

[0083] The side wall of the knob seat 1 and the side wall of the fixing tube 7 are both provided with a second guide hole 12, and the inner side wall of the second knob 5 is also provided with a second inclined slot 50. One end of the second connecting pin 60 is connected to the second speed-changing piston 6, and the other end passes through the second guide hole 12 to connect to the second roller 62. The second roller 62 is placed in the second inclined slot 50 and can slide along the length direction of the second inclined slot 50; the length of the second guide hole 12 is not less than the maximum movement stroke of the second connecting pin 60. The idea of ​​the second inclined slot 50 in the second knob 5 of this embodiment driving the second speed-changing piston 6 through the second roller 62 and the second connecting pin 60 is consistent with the corresponding structure in the first embodiment, and the difference is that the inclination degree of the second inclined slot 50 of this embodiment can be consistent with or inconsistent with the inclination degree of the first inclined slot 20, and can be set according to the actual speed adjustment requirements.

[0084] In order to impose a gear limit on the speed adjustment of the second knob 5, in the present embodiment, the outer wall of the knob seat 1 is provided with a second positioning groove 14 along its circumference, and a plurality of second positioning holes 140 are provided at the bottom of the second positioning groove 14, and the second knob 5 is provided with a second positioning pin 51, and an elastically compressible second ball 510 is provided at the end of the second positioning pin 51. When the second knob 5 is rotated, the second ball 510 can be inserted into the second positioning hole 140; the number of the second positioning holes 140 in the present embodiment can be consistent with or inconsistent with the number of the first positioning holes 130 in the first embodiment, and is specifically set according to the stroke of the second speed change piston 6.

[0085] In order to facilitate assembly, the second knob 5 of this embodiment adopts the same structure as the first knob 2 in the first embodiment. Specifically, a second annular groove 102 is provided on the outer wall of the knob seat 1. The second annular groove 102 and the first annular groove 101 are spaced apart along the axial direction of the knob seat 1. The second knob 5 includes a third inner semi-ring 521, a fourth inner semi-ring 522, a second outer ring 53, a second retaining spring 54 and a second anti-slip sleeve 55. The third inner semi-ring 521 and the fourth inner semi-ring 522 are spliced ​​to form a second inner ring 52. The second inner ring 52 is installed in the second annular groove 101 through the second retaining spring 54. 2, the second annular groove 102 is used to limit the axial movement of the first inner ring 22; the second inclined groove 50 is opened on the inner wall of the second inner ring 52, the second positioning pin 51 is connected to the side wall of the first inner ring 22, and the outer wall of the second inner ring 52 is provided with a second limiting groove 520 extending along its axial direction; the inner wall of the second outer ring 53 is provided with a second limiting block 530 cooperating with the second limiting groove 520, the second outer ring 53 is sleeved on the second inner ring 52, and the second limiting block 530 cooperates with the second limiting groove 520 to limit the circumferential rotation of the speed change outer ring; the second anti-slip sleeve 55 is sleeved on the second knob 5.

[0086] It should also be noted that the second speed shift piston 6 is only different from the first speed shift piston 3 in length to accommodate the axially distributed first knob 2 and second knob 5 , and the rest of the structure of the second speed shift piston 6 is consistent with that of the first speed shift piston 3 .

[0087] In other embodiments, a bicycle is provided, comprising the multi-knob control structure described above.

[0088] 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 implementation methods, or to replace some of the technical features therein with equivalents. 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 control structure, installed on a fixed pipe for use, characterized in that: The control structure comprises: a knob seat, a first knob, a first speed-changing piston and a cylinder seat; The cylinder seat is installed inside the fixed pipe, a first speed-changing cylinder is arranged inside the cylinder seat, and the first speed-changing piston is sealed and movably connected to the first speed-changing cylinder; The knob seat is sleeved on the fixing tube; The first knob is rotatably mounted on the knob seat, and the first knob is movably connected to the first speed-changing piston. Rotating the first knob can drive the speed-changing piston to move along the axial direction of the first speed-changing oil cylinder.

2. The control structure according to claim 1, characterized in that: The control structure also includes a first roller and a first connecting pin; The side walls of the knob seat and the fixed tube are both provided with a first guide hole, and the inner wall of the first knob is also provided with a first inclined groove. One end of the first connecting pin is connected to the first speed change piston, and the other end passes through the first guide hole to connect to the first roller. The first roller is placed in the first inclined groove and can slide along the length direction of the first inclined groove; the length of the first guide hole is not less than the maximum movement stroke of the first connecting pin.

3. The control structure according to claim 2, characterized in that: The outer wall of the knob seat is provided with a first positioning groove along its circumference, and a plurality of first positioning holes are provided at the bottom of the first positioning groove. The first knob is provided with a first positioning pin, and an elastically compressible first bead is provided at the end of the first positioning pin. When the first knob is rotated, the first bead can be inserted into the first positioning hole.

4. The control structure according to claim 3, characterized in that: The outer wall of the knob seat is provided with a first annular groove; the first knob comprises a first inner half ring, a second inner half ring, a first outer ring, a first retaining spring and a first anti-slip sleeve; The first inner half ring and the second inner half ring are spliced ​​to form a first inner ring, the first inner ring is mounted on the first annular groove through the first clamping ring, and the first annular groove is used to limit the axial movement of the first inner ring; The first inclined sliding groove is provided on the inner wall of the first inner ring, the first positioning pin is connected to the side wall of the first inner ring, and the outer wall of the first inner ring is provided with a first limiting groove extending along the axial direction thereof; The inner wall of the second outer ring is provided with a first limiting block matched with the first limiting groove, the second outer ring is sleeved on the first inner ring, and the first limiting block matches with the first limiting groove to limit the circumferential rotation of the speed change outer ring; The first anti-slip sleeve is sleeved on the first outer ring.

5. The control structure according to claim 3, characterized in that: The first speed shift piston includes a push rod, a sealing column and an external tube. The push rod is provided with an axially through oil filling hole. One end of the push rod is provided with a piston part that cooperates with the first speed shift cylinder. The other end of the push rod is connected to the external tube, and the external tube is connected to the first connecting pin. The sealing column is embedded in the end of the oil filling hole away from the first speed shift cylinder.

6. A multi-knob control structure, comprising the control structure according to any one of claims 1 to 5, characterized in that: The multi-knob control structure also includes a second knob and a second speed-changing piston; A second speed-changing oil cylinder is disposed on the oil cylinder seat, and the second speed-changing oil cylinder and the first speed-changing oil cylinder are arranged side by side in the oil cylinder seat, and the second speed-changing oil cylinder is sealed and movably connected to the second speed-changing oil cylinder; The second knob is rotatably mounted on the knob seat, and the second knob and the first knob are spaced apart along the axial direction of the knob seat. The second knob is movably connected to the second speed change piston. Rotating the second knob can drive the speed change piston to move axially along the second speed change oil cylinder.

7. The multi-knob control structure according to claim 6, characterized in that: The multi-knob control structure also includes a second roller and a second connecting pin; The side walls of the knob seat and the fixed tube are both provided with a second guide hole, and the inner wall of the second knob is also provided with a second inclined groove. One end of the second connecting pin is connected to the second speed change piston, and the other end passes through the second guide hole to connect to the second roller. The second roller is placed in the second inclined groove and can slide along the length direction of the second inclined groove; the length of the second guide hole is not less than the maximum movement stroke of the second connecting pin.

8. The multi-knob control structure according to claim 7, characterized in that: The outer wall of the knob seat is provided with a second positioning groove along its circumference, and a plurality of second positioning holes are provided at the bottom of the second positioning groove. The second knob is provided with a second positioning pin, and an elastically compressible second bead is provided at the end of the second positioning pin. When the second knob is rotated, the second bead can be inserted into the second positioning hole.

9. The multi-knob control structure according to claim 8, characterized in that: The outer wall of the knob seat is provided with a second annular groove, and the second annular groove is spaced apart from the first annular groove along the axial direction of the knob seat; the second knob comprises a third inner half ring, a fourth inner half ring, a second outer ring, a second retaining ring and a second anti-slip sleeve; The third inner half ring and the fourth inner half ring are spliced ​​to form a second inner ring, the second inner ring is mounted on the second annular groove through the second clamping ring, and the second annular groove is used to limit the axial movement of the first inner ring; The second inclined sliding groove is provided on the inner wall of the second inner ring, the second positioning pin is connected to the side wall of the first inner ring, and the outer wall of the second inner ring is provided with a second limiting groove extending along the axial direction thereof; The inner wall of the second outer ring is provided with a second limiting block matched with the second limiting groove, the second outer ring is sleeved on the second inner ring, and the second limiting block matches with the second limiting groove to limit the circumferential rotation of the speed change outer ring; The second anti-slip sleeve is sleeved on the second outer ring.

10. A bicycle, characterized in that: Comprising the multi-knob control structure as claimed in claim 9.

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