Control structure and bicycle

Abstract

The invention relates to the technical field of bicycles, and particularly discloses a control structure and a bicycle. The control structure comprises a knob seat, a brake knob, a brake piston, a reset piece and a brake oil cylinder; the brake oil cylinder seat is mounted in the fixed pipe, and the brake piston is sealed and movably connected with the brake oil cylinder; the rotary knob seat is sleeved on the fixed pipe, the brake rotary knob is rotatably sleeved on the rotary knob seat, the brake rotary knob is movably connected with the brake piston, and the brake piston can be driven to move along the axial direction of the brake oil cylinder by rotating the brake rotary knob; the reset piece is connected with the brake knob and the knob seat and used for resetting the brake knob.

Description

Technical Field

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

[0002] The existing bicycle brake components are basically mounted externally on the handlebars, including the oil cylinder body and oil pipe used for brake adjustment, the brake handle operated by the user, etc., which are all exposed, and the brake handle as a whole extends away from the handlebar, 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 brake adjustment structure that can build the brake oil cylinder into the handlebar and extend the length of the brake handle to a smaller extent, so as to truly realize the internal routing and neat external structure. Summary of the invention

[0003] In view of this, the present invention provides a 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 brake knob, a brake piston, a reset member and a brake oil cylinder;

[0005] The brake cylinder seat is installed inside the fixed pipe, and the brake piston is sealed and movably connected to the brake cylinder;

[0006] The knob seat is sleeved on the fixing tube, the brake knob is rotatably sleeved on the knob seat, and the brake knob is movably connected to the brake piston, and rotating the brake knob can drive the brake piston to move along the axial direction of the brake cylinder;

[0007] The reset member is connected to the brake knob and the knob seat and is used for resetting the brake knob.

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

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

[0010] Preferably, the brake knob comprises an inner ring, an outer ring and an anti-slip outer cover; an annular groove is provided on the knob seat;

[0011] The inclined slide groove is provided on the inner wall of the inner ring, the connecting pin is connected to the side wall of the inner ring, and the outer wall of the inner ring is provided with a limiting groove extending along its axial direction; the inner ring can be rotatably sleeved on the annular groove, and the annular groove is used to limit the axial movement of the inner ring;

[0012] The inner wall of the outer ring is provided with a limiting block matched with the limiting groove, the outer ring is sleeved on the inner ring, and the limiting block cooperates with the limiting groove to limit the circumferential rotation of the outer ring;

[0013] The anti-skid cover is sleeved on the brake knob.

[0014] Preferably, the control structure also includes a retaining spring; the inner ring includes a first inner half ring and a second inner half ring, the inner ring is formed by splicing the first inner half ring and the second inner half ring, the outer wall of the inner ring is provided with a retaining spring groove, and the retaining spring is embedded in the retaining spring groove; the first inner half ring is provided with a plurality of positioning columns, and the second inner half ring is provided with a plurality of positioning holes that cooperate with the plurality of positioning columns, and when the first inner half ring is spliced ​​with the second inner half ring, the positioning columns are inserted into the positioning holes.

[0015] Preferably, the reset member is a torsion spring, which is sleeved on the knob seat, and a first connecting protrusion for connecting one end of the torsion spring is provided in the annular groove of the knob seat, and a second connecting protrusion for connecting the other end of the torsion spring is provided on the inner wall of the inner ring.

[0016] Preferably, the control structure further comprises an oil cylinder cover, and the oil cylinder cover covers the brake oil cylinder; the brake piston comprises a brake push rod, a return spring, an external nut and a sealing column;

[0017] The brake push rod is provided with an oil filling hole extending along its axial direction, one end of the brake push rod is provided with a piston part cooperating with the brake oil cylinder, and the other end of the brake push rod passes through the oil cylinder cover and is connected to the external nut; the external nut is used to connect the connecting pin;

[0018] The return spring is placed in the brake oil cylinder, and the return spring connects the bottom wall of the brake oil cylinder and the end wall of the piston part of the push rod;

[0019] The sealing column is threadedly connected in the oil filling hole, and the outer wall of the sealing column is provided with a plurality of sealing rings, and the outer wall of the sealing column and the inner wall of the oil filling hole are sealed by the plurality of sealing rings.

[0020] Preferably, a guide structure is provided between the brake push rod and the cylinder cover.

[0021] Preferably, the control structure further comprises an oil chamber sealing plate made of elastic material and an oil chamber sealing cover having air holes;

[0022] The outer wall of the brake cylinder is provided with a balancing oil groove, and the bottom of the balancing oil groove is provided with an oil through hole connected to the inside of the brake 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; the distance between the oil through hole and the bottom wall of the brake cylinder is not less than the distance between the end wall of the piston part of the brake push rod and the bottom wall of the brake cylinder when the brake push rod is not subject to force.

[0023] A bicycle comprises the control structure mentioned above, and also comprises a handlebar, wherein the two ends of the handlebar form a grip, and the fixed tube is the grip at any one end or both ends of the handlebar.

[0024] A bicycle comprises the control structure mentioned above, and also comprises a handlebar; the fixed tube is mounted on the handlebar, and the fixed tube is communicated with the inside of the handlebar.

[0025] Implementing the embodiments of the present invention will have the following beneficial effects:

[0026] After adopting the above control structure, the knob seat and the brake knob are installed on the fixed tube in a mutually sleeved manner, so that the brake knob does not have a structure extending outward compared to the fixed tube. The coaxial sleeve method solves the problem of the messy external structure caused by the outward extension of the brake handle of the traditional bicycle, 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. At the same time, it will not be pulled and entangled by debris, so that the handlebar part of the bicycle using the control structure has good durability and service life, and reduces the maintenance frequency of the control structure by users; and in this embodiment, the brake cylinder and the brake piston are built into the fixed tube, and the brake cylinder and the hydraulic brake on the bicycle are connected by arranging an oil pipe in the fixed tube or the handlebar, so as to achieve the built-in and internal routing effect of the control structure, so that the brake cylinder, the brake piston and the oil pipe can be protected from damage caused by bumps of external objects, further improving the overall structural neatness and aesthetic effect of the handlebar of the bicycle using the control structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] in:

[0029] Figure 1 The structure diagram of the control structure of the present invention being assembled on a bicycle Figure 1 ;

[0030] Figure 2 The overall structure explosion of the control structure in the present invention Figure 1 ;

[0031] Figure 3 for Figure 1 AA section view in;

[0032] Figure 4 The overall structure explosion of the control structure in the present invention Figure 2 ;

[0033] Figure 5 It is a schematic diagram of the separation of the brake knob and the knob seat in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the knob seat in the present invention;

[0035] Figure 7 A schematic diagram of the separation of the brake piston and the brake cylinder in the present invention;

[0036] Figure 8 The structure diagram of the control structure of the present invention being assembled on a bicycle Figure 2 ;

[0037] Fig. 9 The structure diagram of the control structure of the present invention being assembled on a bicycle Figure 3 ;

[0038] Fig.10 It is an orthographic projection view of the inner ring of the brake knob in the present invention.

[0039] Reference numerals:

[0040] 1 knob seat, 10 annular groove, 11 guide hole, 12 first connecting protrusion;

[0041] 2 brake knob, 20 inner ring, 200 inclined slide groove, 201 first inner semi-ring, 201a positioning column, 202 second inner semi-ring, 202a positioning hole, 203 limiting groove, 204 retaining spring groove, 205 second connecting protrusion, 21 outer ring, 210 limiting block, 22 retaining spring, 23 anti-slip cover;

[0042] 3 brake piston, 30 brake push rod, 300 oil filling hole, 301 piston part, 31 return spring, 32 external nut, 33 sealing column, 330 sealing ring, 34 brake roller, 35 connecting pin;

[0043] 4 reset parts,

[0044] 5 brake cylinders, 50 balance oil tanks, 500 oil holes;

[0045] 6 oil cylinder head, 70 oil chamber sealing plate, 71 oil chamber sealing cover;

[0046] 8 fixed tube, 80 outer cover;

[0047] 9Handlebar. DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] 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.

[0051] As attached Figure 1-7 The embodiment provided by the present invention is shown in FIG.

[0052] The embodiment of the present invention provides a control structure, which is installed on a fixed pipe 8 for use, and the control structure includes: a knob seat 1, a brake knob 2, a brake piston 3, a reset member 4 and a brake oil cylinder 5;

[0053] The brake cylinder 5 is installed inside the fixed pipe 8, and the brake piston 3 is sealed and movably connected to the brake cylinder 5;

[0054] The knob seat 1 is sleeved on the fixed tube 8, the brake knob 2 can be rotatably sleeved on the knob seat 1, and the brake knob 2 is movably connected with the brake piston 3. Rotating the brake knob 2 can drive the brake piston 3 to move along the axial direction of the brake cylinder 5;

[0055] The reset member 4 is connected to the brake knob 2 and the knob seat 1 and is used for resetting the brake knob 2 .

[0056] Specifically, the fixed tube 8 can be the grip portion of the handlebar 9 or an extended tubular structure connected to the handlebar 9, and the brake cylinder 5 can be fixed to the inside of the fixed tube 8 by bolts by providing connecting ears, threaded holes and other structures; in the present embodiment, the knob seat 1 and the brake knob 2 both adopt a tubular structure, wherein the knob seat 1 is sleeved on the outer wall of the fixed tube 8, and the brake knob 2 is coaxially sleeved on the knob seat 1, and the coaxially arranged brake knob 2 is used to drive the movement of the brake piston 3 on the brake cylinder 5. Since the knob seat 1 and the brake knob 2 are installed on the fixed tube 8 in a mutually sleeved manner, the brake knob 2 does not have a structure extending outward compared to the fixed tube 8. By coaxially sleeved, the problem of the cluttered external structure caused by the outward extension of the brake handle of a traditional bicycle is solved, making the application The exposed structure of the handlebar part of the bicycle with the control structure is neat and tidy, without any redundant extended structure. It is not easy to be damaged by bumps when the bicycle falls, and at the same time it will not be pulled or entangled by debris, so that the handlebar part of the bicycle using the control structure has good durability and service life, and reduces the frequency of maintenance of the control structure by users; and in this embodiment, the brake cylinder 5 and the brake piston 3 are built into the fixed tube 8, and the brake cylinder 5 and the hydraulic brake on the bicycle are connected by arranging an oil pipe in the fixed tube 8 or the handlebar 9, so as to realize the built-in and internal wiring effect of the control structure, so that the brake cylinder 5, the brake piston 3 and the oil pipe can be protected from damage caused by bumps from external objects, further improving the overall structural neatness and aesthetic effect of the handlebar of the bicycle using the control structure. The brake knob 2 is movably sleeved on the knob seat 1 and is movably connected with the brake piston 3. When the brake knob 2 is rotated, the brake piston 3 can be pressed down to squeeze the brake cylinder 5 to achieve the purpose of controlling the brake; and by installing a reset member 4 between the knob seat 1 and the brake knob 2, after the force on the brake knob 2 is released, the brake knob 2 can be reset to the initial position without braking through the reset member 4, thereby improving the convenience of users when using this control structure. The reset member 4 can be a torsion spring, a tension spring or other elastic reset structure. For example, when the reset member 4 is a tension spring, a plurality of axially arranged protrusions can be provided on the inner wall of the brake knob 2, and a plurality of grooves can be provided on the outer wall of the knob seat 1 corresponding to the plurality of protrusions, and the tension spring is placed in the groove, so that the two ends of the tension spring are respectively connected to the inner wall of the protrusion and the groove, so that when the brake knob 2 is rotated, the tension spring can be stretched by force, and when the brake knob 2 is not subjected to external force, the brake knob 2 can be rotated and reset by the elastic force of the tension spring to release the brake.

[0057] See attached Figure 3 and attached Figure 7The control structure also includes a brake roller 34 and a connecting pin 35; the side walls of the knob seat 1 and the side walls of the fixed tube 8 are both provided with a guide hole 11, and the inner wall of the brake knob 2 is also provided with an inclined slide groove 200, one end of the connecting pin 35 is connected to the brake piston 3, and the other end passes through the guide hole 11 to connect the brake roller 34, and the brake roller 34 is placed in the inclined slide groove 200 and can slide along the length direction of the inclined slide groove 200; the length of the guide hole 11 is not less than the maximum movement stroke of the connecting pin 35.

[0058] In this embodiment, the brake knob 2 is provided with an inclined slide groove 200, and then connected to the brake piston 3 through the brake roller 34 and the connecting pin 35. Figure 4 As shown, this structure can make the brake roller 34 roll along the length direction of the inclined slide groove 200 when the brake knob 2 is rotated, and the connecting pin 35 is restricted by the guide hole 11 and can only move along the length direction of the guide hole 11, that is, the brake piston 3 can move along the axial direction of the brake cylinder 5 to achieve the purpose of controlling the brake. The brake roller 34 of this embodiment can also use a bearing or other structure that is easy to rotate. Since there is a height difference at both ends of the inclined slide groove 200, when the brake roller 34 is placed at different positions of the inclined slide groove 200, the brake piston 3 is at different positions in the brake cylinder 5, and the liquid in the brake cylinder 5 is squeezed to different degrees to achieve the purpose of braking with different strengths; the inclined slide groove 200 of this embodiment is projected on the vertical plane and has an inclination angle β with the end face of the brake knob 2, which is specifically as shown in the attached figure. Fig.10 The tilt angle β shown is greater than or equal to 30 degrees. In this embodiment, the tilt angle β of the inclined slide groove 200 is set to be greater than 30 degrees, so that different positions in the length direction of the inclined slide groove 200 have a larger height difference, so that when the brake knob 2 is rotated at a smaller rotation angle, the brake piston 3 can squeeze the liquid in the brake cylinder 5, so that the user can easily achieve the purpose of braking by controlling the brake knob 2; at the same time, the larger height difference can reduce the friction between the brake roller 34 and the inner wall of the inclined slide groove 200, so that the brake roller 34 can move repeatedly in the inclined slide groove 200, so that the bicycle using this control structure can quickly achieve braking or brake release.

[0059] In some embodiments, the brake knob 2 includes an inner ring 20, an outer ring 21, a retaining ring 22 and an anti-slip cover 23; an annular groove 10 is provided on the knob seat 1; an oblique groove 200 is opened on the inner wall of the inner ring 20, a connecting pin 35 is connected to the side wall of the inner ring 20, and a limiting groove 203 extending along its axial direction is provided on the outer wall of the inner ring 20; the inner ring 20 can be rotatably sleeved on the annular groove 10, and the annular groove 10 is used to limit the axial movement of the inner ring 20; a limiting block 210 cooperating with the limiting groove 203 is provided on the inner wall of the outer ring 21, the outer ring 21 is sleeved on the inner ring 20, and the limiting block 210 cooperates with the limiting groove 203 to limit the circumferential rotation of the outer ring 21;

[0060] Specifically, the inner ring 20 includes a first inner half ring 201 and a second inner half ring 202. The inner ring 20 is formed by splicing the first inner half ring 201 and the second inner half ring 202. The outer wall of the inner ring 20 is provided with a retaining spring groove 204, and the retaining spring 22 is embedded in the retaining spring groove 204; the first inner half ring 201 is provided with a plurality of positioning posts 201a, and the second inner half ring 202 is provided with a plurality of positioning holes 202a that cooperate with the plurality of positioning posts 201a. When the first inner half ring 201 is spliced ​​with the second inner half ring 202, the positioning posts 201a are inserted into the positioning holes 202a. After the reset member 4 is installed on the knob seat 1, the first inner half ring 201 and the second inner half ring 202 are separated from each other. 02 are spliced ​​to form an inner ring 20, and then covered and fixed on the outside by a retaining spring 22 and an outer ring 21, which facilitates the assembly of the control structure and improves the overall structural stability; the positioning column 201a and the positioning hole 202a are used to facilitate the splicing and positioning of the first inner half ring 201 and the second inner half ring 202 and the installation of the retaining spring 22; the annular groove 10 on the knob seat 1 makes the brake knob 2 only rotate but not move up and down, thereby achieving stable driving of the brake piston 3; and in order to facilitate the user to control the brake knob 2 and improve the grip feel, the present embodiment has an anti-slip cover 23 connected to the outer cover of the brake knob 2, and the anti-slip cover 23 is made of rubber material.

[0061] See attached Figure 4 The reset member 4 is a torsion spring, which is mounted on the knob seat 1, and the annular groove 10 of the knob seat 1 is provided with a first connecting protrusion 12 for connecting one end of the torsion spring, and the inner wall of the inner ring 20 is provided with a second connecting protrusion 205 for connecting the other end of the torsion spring, wherein both ends of the torsion spring are barbed structures, and the two ends of the torsion spring are respectively hooked on the first connecting protrusion 12 and the second connecting protrusion 205. When the brake knob 2 is rotated to brake, the torsion spring is stretched and energy is stored, and the external force of the brake knob 2 is released, the brake knob 2 is reset, and the brake is released.

[0062] See attached Figure 7The control structure also includes a cylinder cover 6, which covers the brake cylinder 5; the brake piston 3 includes a brake push rod 30, a return spring 31, an external nut 32 and a sealing column 33; the brake push rod 30 is provided with an oil filling hole 300 extending along its axial direction, one end of the brake push rod 30 is provided with a piston part 301 that cooperates with the brake cylinder 5, and the other end of the brake push rod 30 passes through the cylinder cover 6 and is connected to the external nut 32; the external nut 32 is used to assemble the connecting pin 35; specifically, when the brake push rod 30 moves, the piston part 301 squeezes the liquid in the brake cylinder 5; the external nut 32 avoids the direct connection between the connecting pin 35 and the brake push rod 30, which is convenient for processing and assembly; the return spring 31 is placed in the brake cylinder 5, and the return spring 31 connects the bottom wall of the brake cylinder 5 and the activity of the push rod The end wall of the plug portion 301; when the brake knob 2 is rotated to press the brake push rod 30 downward, the return spring 31 is compressed to store energy. After the force of the brake knob 2 is released, the return spring 31 moves the piston portion 301 in a direction away from the bottom wall of the brake cylinder 5, and then combines with the force of the return member 4 to achieve the resetting effect on the brake knob 2, thereby releasing the brake; in the present embodiment, a guide structure is provided between the brake push rod 30 and the cylinder cover 6. Specifically, the portion where the brake push rod 30 contacts the cylinder cover 6 can be set to a D shape, that is, the cross-section of the brake push rod 30 is D-shaped, and the cylinder cover 6 is a D-shaped hole. During installation, the brake push rod 30 has a unique position, which is convenient for the external nut 32 to assemble the connecting pin 35, and can also prevent the circumferential rotation of the brake push rod 30 from causing liquid leakage.

[0063] In order to facilitate the replenishment of liquid inside the brake oil cylinder 5, the brake push rod 30 is provided with an oil filling hole 300 to connect the brake oil cylinder 5 with the outside. When the control structure is installed at the end of the fixed pipe 8, as shown in the attached Figure 1 In the position shown, a sealing column 33 is threadedly connected to the end of the oil filling hole 300 away from the piston part 301, and a plurality of sealing rings 330 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 300 are sealed by the plurality of sealing rings 330. An outer cover 80 may also be provided at the end of the fixed tube 8 to prevent the brake piston 3 and the brake cylinder 5 from being exposed.

[0064] When the control structure is installed in the middle of the fixed tube 8 or the handlebar 9, as shown in the attached Figure 8 At the position shown, the oil filling hole 300 can be connected by an external oil pipe to facilitate the liquid replenishment of the interior of the brake cylinder 5. The specific structure is not shown in the drawings of this embodiment.

[0065] See attached Figure 7The control structure also includes an oil chamber sealing plate 70 made of elastic material and an oil chamber sealing cover 71 with air holes; a balancing oil groove 50 is provided on the outer wall of the brake cylinder 5, and an oil through hole 500 communicating with the inside of the brake cylinder 5 is provided at the bottom of the balancing oil groove 50; the oil chamber sealing plate 70 covers and seals the balancing oil groove 50, and the oil chamber sealing cover 71 covers the balancing oil groove 50 so that a balancing oil chamber is formed between the balancing oil groove 50 and the oil chamber sealing cover 71; the distance between the oil through hole 500 and the bottom wall of the brake cylinder 5 is not less than the distance between the end wall of the piston part 301 of the brake push rod 30 and the bottom wall of the brake cylinder 5 when the brake push rod 30 is not subjected to force.

[0066] When a bicycle is used outdoors, the liquid in the brake cylinder 5 or the oil pipe is easily affected by changes in the external temperature. For example, in the transition season between spring and summer, there is a large temperature difference between morning and evening, which easily causes the liquid in the container to expand and contract. That is, when the internal temperature of the brake cylinder 5 increases due to the increase in the external temperature, the liquid in the brake cylinder 5 is affected by thermal expansion and contraction. The liquid in the brake cylinder 5 will expand. A balancing oil chamber is provided so that the liquid can enter the balancing oil chamber through the oil hole 500 or flow back from the balancing oil chamber to the brake cylinder 5. The balancing oil chamber can alleviate the thermal expansion of the liquid in the brake cylinder 5 and prevent the excessively expanded liquid from bursting the oil pipe or the brake cylinder 5. Specifically, when the brake piston 3 is not driven by the brake knob 2, the piston portion 301 of the brake piston 3 is in the initial position. At this time, the outer wall of the piston portion 301 of the brake piston 3 closes the oil hole 500, and the liquid in the brake cylinder 5 cannot enter the balancing oil chamber. When the brake piston 3 is pressed down to squeeze the liquid, the brake The liquid in the oil cylinder 5 is away from the oil through hole 500, so the liquid still will not enter the balancing oil chamber, ensuring that the liquid can be squeezed into the oil pipe and transported to the designated position when the brake piston 3 moves, thereby achieving a braking effect; on the contrary, when the external temperature rises and causes the internal temperature of the brake cylinder 5 to rise, the liquid expands, causing the piston part 301 of the brake piston 3 to move away from the bottom wall of the brake cylinder 5, that is, the piston part 301 no longer closes the oil through hole 500. At this time, the liquid can enter the balancing oil chamber through the oil through hole 500, avoiding the situation where the brake caliper is stuck due to internal expansion of the liquid, and can flow back to the brake cylinder 5 when the temperature drops; the elastic oil chamber sealing plate 70 can be deformed when there is too much liquid in the balancing oil chamber, thereby increasing the volume of the balancing oil chamber, and the external oil chamber sealing cover 71 is made of metal to improve the structural stability, and the air holes of the oil chamber sealing cover 71 are conducive to relieving the air pressure in the balancing oil chamber, facilitating the flow of liquid between the balancing oil chamber and the brake cylinder 5.

[0067] In some embodiments, the present invention also provides a bicycle, such as Figure 1 As shown, the bicycle includes the above-mentioned control structure and a handlebar 9 , both ends of the handlebar 9 form grips, and the fixed tube 8 is the grip at any one end or both ends of the handlebar 9 .

[0068] In some embodiments, the present invention also provides a bicycle, such as Fig. 9 As shown, the bicycle includes the above-mentioned control structure and a handlebar 9; a fixed tube 8 is installed on the handlebar 9, and the fixed tube 8 is connected to the inside of the handlebar 9, that is, the fixed tube 8 serves as an extension tube structure of the handlebar 9.

[0069] 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 brake knob, a brake piston, a reset member and a brake oil cylinder; The brake cylinder seat is installed inside the fixed pipe, and the brake piston is sealed and movably connected to the brake cylinder; The knob seat is sleeved on the fixing tube, the brake knob is rotatably sleeved on the knob seat, and the brake knob is movably connected to the brake piston, and rotating the brake knob can drive the brake piston to move along the axial direction of the brake cylinder; The reset member is connected to the brake knob and the knob seat and is used for resetting the brake knob.

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

3. The control structure according to claim 2, characterized in that: The brake knob comprises an inner ring, an outer ring and an anti-slip outer cover; an annular groove is provided on the knob seat; The inclined slide groove is provided on the inner wall of the inner ring, the connecting pin is connected to the side wall of the inner ring, and the outer wall of the inner ring is provided with a limiting groove extending along its axial direction; the inner ring can be rotatably sleeved on the annular groove, and the annular groove is used to limit the axial movement of the inner ring; The inner wall of the outer ring is provided with a limiting block matched with the limiting groove, the outer ring is sleeved on the inner ring, and the limiting block cooperates with the limiting groove to limit the circumferential rotation of the outer ring; The anti-skid outer cover is sleeved on the brake knob.

4. The control structure according to claim 3, characterized in that: The control structure also includes a retaining spring; the inner ring includes a first inner half ring and a second inner half ring, the inner ring is formed by splicing the first inner half ring and the second inner half ring, the outer wall of the inner ring is provided with a retaining spring groove, and the retaining spring is embedded in the retaining spring groove; the first inner half ring is provided with a plurality of positioning columns, and the second inner half ring is provided with a plurality of positioning holes that cooperate with the plurality of positioning columns, and when the first inner half ring is spliced ​​with the second inner half ring, the positioning columns are inserted into the positioning holes.

5. The control structure according to claim 3, characterized in that: The reset member is a torsion spring, which is sleeved on the knob seat, and a first connecting protrusion for connecting one end of the torsion spring is provided in the annular groove of the knob seat, and a second connecting protrusion for connecting the other end of the torsion spring is provided on the inner wall of the inner ring.

6. The control structure according to claim 2, characterized in that: The control structure also includes a cylinder cover, which covers the brake cylinder; the brake piston includes a brake push rod, a return spring, an external nut and a sealing column; The brake push rod is provided with an oil filling hole extending along its axial direction, one end of the brake push rod is provided with a piston part cooperating with the brake oil cylinder, and the other end of the brake push rod passes through the oil cylinder cover and is connected to the external nut; the external nut is used to connect the connecting pin; The return spring is placed in the brake oil cylinder, and the return spring connects the bottom wall of the brake oil cylinder and the end wall of the piston part of the push rod; The sealing column is threadedly connected in the oil filling hole, and the outer wall of the sealing column is provided with a plurality of sealing rings, and the outer wall of the sealing column and the inner wall of the oil filling hole are sealed by the plurality of sealing rings.

7. The control structure according to claim 6, characterized in that: A guide structure is provided between the brake push rod and the oil cylinder cover.

8. The control structure according to claim 6, characterized in that: The control structure also includes an oil chamber sealing plate made of elastic material and an oil chamber sealing cover having air holes; The outer wall of the brake cylinder is provided with a balancing oil groove, and the bottom of the balancing oil groove is provided with an oil through hole connected to the inside of the brake 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; the distance between the oil through hole and the bottom wall of the brake cylinder is not less than the distance between the end wall of the piston part of the brake push rod and the bottom wall of the brake cylinder when the brake push rod is not subject to force.

9. A bicycle, comprising the control structure according to any one of claims 1 to 8, characterized in that: The bicycle further comprises a handlebar, the two ends of which form grips, and the fixed tube is the grips at any one end or both ends of the handlebar.

10. A bicycle, comprising the control structure according to any one of claims 1 to 8, characterized in that: The bicycle also includes a handlebar; the fixed tube is installed on the handlebar, and the fixed tube is communicated with the inside of the handlebar.

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