Control structure and bicycle

Abstract

The utility model 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 utility model relates to the technical field of bicycle, especially the parts of bicycle. BACKGROUND

[0002] The existing bicycle brake parts are basically externally mounted on the handlebar, specifically including the oil cylinder main body and oil pipe for brake adjustment, the brake handle controlled by the user, etc. are all exposed, and the brake handle extends in the direction away from the handlebar, showing the form of mutual spacing with the handlebar. The above mounting mode and structure design will cause the external structure of the handlebar to be messy and untidy, and very easy to cause damage when the bicycle falls or is pulled by other sundries. In order to improve the structural tidiness and durability of the existing bicycle, reduce the maintenance frequency and increase the service life, it is urgent to develop a brake adjustment structure which can internally place the brake oil cylinder in the handlebar and has a smaller external extension length of the brake handle, and truly realize internal wiring and external structural tidiness. SUMMARY

[0003] Therefore, the utility model provides a control structure and bicycle for solving the technical problems in the above background art.

[0004] In order to achieve one or part or all of the above purposes or other purposes, the utility model provides a control structure which is installed on a fixed pipe for use, and the control structure comprises a knob seat, a brake knob, a brake piston, a reset piece and a brake oil cylinder.

[0005] The brake oil cylinder seat is installed in the interior of the fixed pipe, and the brake piston is sealingly and movably connected to the brake oil cylinder.

[0006] The knob seat is sleeved on the fixed pipe, the brake knob is rotatably sleeved on the knob seat, 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 oil cylinder.

[0007] The reset piece 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 wall of the knob seat and the side wall of the fixed pipe are both provided with a guide hole, the inner side wall of the brake knob is further provided with an inclined sliding groove, one end of the connecting pin is connected to the brake piston, and the other end of the connecting pin passes through the guide hole and is connected to the brake roller. The brake roller is placed in the inclined sliding groove and can slide along the length direction of the inclined sliding 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-skid cover; the knob seat is provided with an annular groove;

[0011] The inclined chute is arranged 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 the axial direction thereof;

[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 is matched 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 further comprises a clamping spring; the inner ring comprises a first inner half ring and a second inner half ring, the inner ring is spliced by the first inner half ring and the second inner half ring, the outer wall of the inner ring is provided with a clamping spring groove, and the clamping spring is embedded in the clamping spring groove; the first inner half ring is provided with a plurality of positioning columns, the second inner half ring is provided with a plurality of positioning holes matched 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, the torsion spring is sleeved on the knob seat, the annular groove in the knob seat is provided with a first connecting protrusion for connecting one end of the torsion spring, and the inner wall of the inner ring is provided with a second connecting protrusion for connecting the other end of the torsion spring.

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

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

[0018] The reset spring is arranged in the brake cylinder, and the reset spring is connected to the bottom wall of the brake cylinder and the end wall of the piston part of the push rod.

[0019] The sealing column is threadedly connected in the oil injection hole, 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 injection hole are sealed by the plurality of sealing rings.

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

[0021] Preferably, the control structure further comprises an oil cavity sealing plate made of elastic material and an oil cavity sealing cover with air holes.

[0022] The outer wall of the brake cylinder is provided with a balance oil groove, the bottom of the balance oil groove is provided with an oil passage hole communicating with the inside of the brake cylinder, the oil cavity sealing plate covers and seals the balance oil groove, the oil cavity sealing cover covers the balance oil groove so that a balance oil cavity is formed between the balance oil groove and the oil cavity sealing cover; the distance between the oil passage 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 when it is not subjected to force and the bottom wall of the brake cylinder.

[0023] A bicycle comprising the control structure described above, the bicycle further comprising a handlebar, the two ends of the handlebar forming handle grips, and the fixing tube being the handle grip of either end or both ends of the handlebar.

[0024] A bicycle comprising the control structure described above, the bicycle further comprising a handlebar, the fixing tube being mounted on the handlebar and communicating with the inside of the handlebar.

[0025] The embodiment of the utility model has the following beneficial effects:

[0026] After the control structure is adopted, the knob seat and the brake knob are coaxially sleeved on the fixing tube, so that the brake knob does not have an outwardly extending structure compared with the fixing tube, the coaxial sleeving solves the problem of external structural disorder caused by the outward extension of the brake handle of the traditional bicycle, the exposed structure of the handlebar part of the bicycle using the control structure is neat and has no redundant extension structure, the handlebar part of the bicycle using the control structure is not prone to damage caused by knocking when the bicycle falls, and at the same time, the handlebar part of the bicycle using the control structure is not subjected to the pulling and dragging of sundries, so that the handlebar part of the bicycle using the control structure has good durability and service life, and the maintenance frequency of the control structure is reduced; in the embodiment, the brake cylinder and the brake piston are built-in the fixing tube, the oil pipe is arranged in the fixing tube or the handlebar to connect the brake cylinder and the hydraulic brake of the bicycle, the built-in and internal wiring effects of the control structure are realized, the brake cylinder, the brake piston and the oil pipe are not subjected to damage caused by knocking of external objects, and the overall structural neatness and aesthetic effect of the handlebar of the bicycle using the control structure are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0028] Wherein:

[0029] Figure 1 Assemble the control structure to the bicycle in the utility model Figure 1 ;

[0030] Figure 2 Assemble the control structure to the bicycle in the utility model Figure 1 ;

[0031] Figure 3 Assemble the control structure to the bicycle in the utility model Figure 1 ;

[0032] Figure 4 Assemble the control structure to the bicycle in the utility model Figure 2 ;

[0033] Figure 5 Assemble the control structure to the bicycle in the utility model ;

[0034] Figure 6 Assemble the control structure to the bicycle in the utility model ;

[0035] Figure 7 Assemble the control structure to the bicycle in the utility model ;

[0036] Figure 8 Assemble the control structure to the bicycle in the utility model Figure 2 ;

[0037] Figure 9 Assemble the control structure to the bicycle in the utility model Figure 3 ;

[0038] Figure 10 The inner ring of the brake knob is a front projection view.

[0039] Reference signs:

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

[0041] 2 brake knob, 20 inner ring, 200 inclined sliding groove, 201 first inner half ring, 201a positioning column, 202 second inner half ring, 202a positioning hole, 203 limiting groove, 204 clamping spring groove, 205 second connecting protrusion, 21 outer ring, 210 limiting block, 22 clamping spring, 23 anti-skid sleeve;

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

[0043] 4 reset piece,

[0044] 5 brake oil cylinder, 50 balance oil groove, 500 oil hole;

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

[0046] 8 fixed tube, 80 outer cover;

[0047] 9 handlebar. DETAILED DESCRIPTION

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description herein and the claims of the application and the above description of the drawings herein is not intended to be complete descriptions of all features of the application; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. Numerous embodiments of the application will be described in detail with reference to drawings, of which:

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0050] In order to make the technical personnel in the art better understand the application scheme, the technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings.

[0051] As shown in the accompanying Figures 1-7 The embodiments provided by the application are shown in the accompanying drawings.

[0052] The embodiments of the application provide a control structure which is installed on the fixed tube 8 for use, and the control structure comprises 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 oil cylinder 5 is installed in the interior of the fixed tube 8, and the brake piston 3 is sealingly and movably connected to the brake oil cylinder 5.

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

[0055] The reset member 4 connects the brake knob 2 and the knob seat 1, and is used to reset the brake knob 2.

[0056] Specifically, the fixed tube 8 can be a handle portion of the handlebar 9 or an extended tubular structure connected to the handlebar 9, and the brake cylinder 5 can be fixed inside the fixed tube 8 by setting connecting ears, threaded holes and other structures. In this embodiment, the knob seat 1 and the brake knob 2 are both in a cylindrical 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. 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 in the fixed tube 8 in a sleeved manner, the brake knob 2 does not have an outwardly extending structure compared to the fixed tube 8. By means of coaxial sleeving, the problem of external structural disorder caused by the outward extension of the brake handle of the traditional bicycle is solved, so that the exposed structure of the handlebar portion of the bicycle applying the control structure is neat and free of redundant extension structure, and is not easily damaged by knocking when the bicycle falls. At the same time, it will not be pulled and hindered by sundries, so that the handlebar portion of the bicycle applying the control structure has good durability and service life, and the maintenance frequency of the control structure by the user is reduced. In this embodiment, the brake cylinder 5 and the brake piston 3 are built-in the fixed tube 8, and an oil pipe is arranged in the fixed tube 8 or the handlebar 9 to connect the brake cylinder 5 and the hydraulic brake on the bicycle, 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 free from damage caused by knocking of external objects, and the overall structural neatness and aesthetic effect of the handlebar of the bicycle applying the control structure are further improved. 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 downward to press the brake cylinder 5, so as to achieve the purpose of controlling the brake. A reset member 4 is installed between the knob seat 1 and the brake knob 2. After the acting force on the brake knob 2 is removed, the reset member 4 can reset the brake knob 2 to the initial position without braking, improving the convenience of the user when using the control structure. The reset member 4 can be selected from a reset structure with elasticity such as a torsional spring and a tension spring. For example, when the reset member 4 is selected from a tension spring, a plurality of axially arranged protrusions can be arranged on the inner wall of the brake knob 2, a plurality of grooves corresponding to the protrusions can be arranged on the outer wall of the knob seat 1, and the tension spring can be arranged in the grooves. The two ends of the tension spring are connected to the protrusions and the inner wall of the grooves, respectively. When the brake knob 2 is rotated, the tension spring can be stretched under stress. When the brake knob 2 is not subjected to external force, the tension spring can reset the brake knob 2 by elastic force, and the brake is released.

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

[0058] In the embodiment, the brake knob 2 is connected to the brake piston 3 through the inclined sliding groove 200 and the brake roller 34 and the connecting pin 35, as shown in Figure 4 When the brake knob 2 is rotated, the brake roller 34 can roll along the length direction of the inclined sliding groove 200, the connecting pin 35 can only move along the length direction of the guide hole 11 due to the limitation of the guide hole 11, and the brake piston 3 moves along the axial direction of the brake cylinder 5, so that the brake is controlled. The brake roller 34 in the embodiment can also be provided with a bearing or other structure facilitating rotation. Due to the height difference between the two ends of the inclined sliding groove 200, when the brake roller 34 is arranged at different positions of the inclined sliding groove 200, the brake piston 3 is at different positions in the brake cylinder 5, the liquid in the brake cylinder 5 is extruded to different degrees, and the brake is achieved to different degrees. The inclined sliding groove 200 in the embodiment has an inclination angle β with the end surface of the brake knob 2 when projected on a vertical plane, and the inclination angle β is greater than or equal to 30 degrees, as shown in the accompanying drawings. Figure 10 In the embodiment, the inclination angle β of the inclined sliding groove 200 is greater than or equal to 30 degrees, so that different positions in the length direction of the inclined sliding groove 200 have a greater height difference, so that the brake knob 2 can be rotated at a smaller rotation angle, the liquid in the brake cylinder 5 is extruded by the brake piston 3, and the user can easily control the brake knob 2 to achieve the brake purpose. Meanwhile, the greater height difference can reduce the friction between the brake roller 34 and the inner wall of the inclined sliding groove 200, facilitate the repeated movement of the brake roller 34 in the inclined sliding groove 200, and facilitate the bicycle provided with the control structure to quickly achieve the brake or brake release.

[0059] In some embodiments, the brake knob 2 comprises an inner ring 20, an outer ring 21, a clasp spring 22 and an anti-skid sleeve 23; the knob seat 1 is provided with an annular groove 10; the inclined sliding groove 200 is arranged on the inner wall of the inner ring 20, the connecting pin 35 is connected to the side wall of the inner ring 20, and the outer wall of the inner ring 20 is provided with a limiting groove 203 extending along the axial direction thereof; the inner ring 20 is rotatably sleeved on the annular groove 10, and the annular groove 10 is used to limit the axial movement of the inner ring 20; the inner wall of the outer ring 21 is provided with a limiting block 210 matched with the limiting groove 203, the outer ring 21 is sleeved on the inner ring 20, and the limiting block 210 and the limiting groove 203 are matched 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 spliced by 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 snap spring groove 204, and the snap spring 22 is embedded in the snap spring groove 204; the first inner half ring 201 is provided with a plurality of positioning columns 201a, and the second inner half ring 202 is provided with a plurality of positioning holes 202a matched with the plurality of positioning columns 201a; when the first inner half ring 201 and the second inner half ring 202 are spliced, the positioning columns 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 spliced to form the inner ring 20 by being separated from each other, and then the outer covering and fixing of the snap spring 22 and the outer ring 21 are performed, so that the assembly of the control structure is facilitated, and the overall structural stability is improved; the positioning column 201a and the positioning hole 202a are used for facilitating the splicing and positioning of the first inner half ring 201 and the second inner half ring 202 and the installation of the snap spring 22; the annular groove 10 on the knob seat 1 enables the brake knob 2 to only rotate and not to move up and down, so that stable driving of the brake piston 3 is realized; in order to facilitate the user to control the brake knob 2 and improve the holding feeling, a non-slip sleeve 23 is sleeved on the brake knob 2 in the embodiment, and the non-slip sleeve 23 is made of rubber material.

[0061] Referring to the accompanying drawings Figure 4 The reset member 4 is a torsion spring, the torsion spring is sleeved on the knob seat 1, 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 the two ends of the torsion spring are in the form of hooks, 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 realize braking, the torsion spring is stretched to store energy under the action of force, and the brake knob 2 is reset under the action of external force on the brake knob 2 to release the brake.

[0062] Referring to the accompanying drawings 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 post 33; the brake push rod 30 has an oil injection hole 300 extending axially, one end of the brake push rod 30 has a piston part 301 that mates with the brake cylinder 5, and the other end of the brake push rod 30 passes through the cylinder cover 6 and connects 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 liquid in the brake cylinder 5; the external nut 32 avoids the connecting pin 35 from being directly connected to the brake push rod 30, which facilitates processing and assembly; the return spring 31 is placed inside the brake cylinder 5, and the return spring 31 connects the bottom wall of the brake cylinder 5 and the piston of the push rod. The end wall of the plug 301; when the brake knob 2 is rotated to press down the brake push rod 30, the return spring 31 is compressed and stored. After the force of the brake knob 2 is released, the return spring 31 moves the piston part 301 away from the bottom wall of the brake cylinder 5. Combined with the force of the reset member 4, it realizes the reset effect of the brake knob 2, thereby releasing the brake. In this embodiment, a guide structure is provided between the brake push rod 30 and the cylinder cover 6. Specifically, the part of the brake push rod 30 that contacts the cylinder cover 6 can be set as D-shaped, that is, the cross section of the brake push rod 30 is D-shaped and the cylinder cover 6 has a D-shaped hole. During installation, the brake push rod 30 has a unique position, which makes it convenient for the external nut 32 to assemble the connecting pin 35. It can also prevent the circumferential rotation of the brake push rod 30 from causing liquid leakage.

[0063] To facilitate fluid replenishment inside the brake cylinder 5, the brake push rod 30 is provided with an oil filling hole 300 connecting the brake cylinder 5 to the outside. When this control structure is installed at the end of the fixed pipe 8, as shown in the attached... Figure 1 At the position shown, a sealing column 33 is threadedly connected to the end of the oil injection hole 300 away from the piston part 301, and multiple sealing rings 330 are provided on the outer wall of the sealing column 33. The outer wall of the sealing column 33 is sealed to the inner wall of the oil injection hole 300 by the multiple sealing rings 330. A cover 80 can 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 handlebar 9, as shown in the attached... Figure 8 The position shown can be connected to the oil filling hole 300 via an external oil pipe to replenish the fluid inside the brake cylinder 5. The specific structure is not shown in the attached drawings of this embodiment.

[0065] See appendix 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; the outer wall of the brake cylinder 5 is provided with a balance oil groove 50, the bottom of which is provided with an oil passage hole 500 communicating with the inside of the brake cylinder 5; the oil chamber sealing plate 70 covers and seals the balance oil groove 50, and the oil chamber sealing cover 71 covers the balance oil groove 50 so that a balance oil chamber is formed between the balance oil groove 50 and the oil chamber sealing cover 71; the distance between the oil passage 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 under force.

[0066] When bicycles are used outdoors, the fluid in the brake cylinder 5 or brake lines is easily affected by changes in external temperature. For example, during the transition from spring to summer, there are large temperature differences between day and night, which can cause the fluid in the container to expand and contract due to temperature changes. Specifically, when the internal temperature of the brake cylinder 5 rises due to the increased external temperature, the fluid inside the brake cylinder 5 will expand due to thermal expansion. A balance chamber is provided to allow fluid to enter through the oil passage 500 or flow back from the balance chamber to the brake cylinder 5. The balance chamber helps to mitigate the thermal expansion of the fluid inside the brake cylinder 5, preventing excessive expansion from bursting the brake lines or the brake cylinder 5. Specifically, when the brake piston 3 is not driven by the brake knob 2, the piston part 301 of the brake piston 3 is in its initial position. At this time, the outer wall of the piston part 301 of the brake piston 3 closes the oil passage 500, preventing the fluid in the brake cylinder 5 from entering the balance chamber. Furthermore, when the brake piston 3 is pressed down to compress the fluid, the brake... The liquid inside the hydraulic cylinder 5 is far from the oil passage 500, so it will not enter the balance oil chamber. This ensures that when the brake piston 3 moves, the liquid can be squeezed into the oil pipe and delivered to the designated position to achieve the braking effect. Conversely, when the external temperature rises, causing 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 passage 500. At this time, the liquid can enter the balance oil chamber through the oil passage 500, preventing the brake caliper from seizing due to internal expansion. When the temperature drops, it can flow back into the brake cylinder 5. The elastic oil chamber sealing plate 70 can deform when there is too much liquid in the balance oil chamber, increasing the volume of the balance oil chamber. The external oil chamber sealing cover 71 is made of metal, which improves the structural stability. The vents in the oil chamber sealing cover 71 help to relieve the air pressure in the balance oil chamber, facilitating the flow of liquid between the balance 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 aforementioned control structure and handlebars 9, with handles formed at both ends of the handlebars 9, and the fixing tube 8 being a handle at any one or both ends of the handlebars 9.

[0068] In some embodiments, the utility model also provides a bicycle, such as Figure 9 As shown in the figure, the bicycle comprises the control structure and handlebar 9 described above; the fixed pipe 8 is installed on the handlebar 9, and the fixed pipe 8 is communicated with the inside of the handlebar 9, that is, the fixed pipe 8 is used as the extension pipe structure of the handlebar 9.

[0069] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and are not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model. The utility model can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments or make equivalent replacement to part of the technical features. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection range of the utility model.

Claims

1. A control structure, installed for use on a fixed pipe, characterized by, The control structure comprises a knob seat, a brake knob, a brake piston, a reset member and a brake cylinder; The brake cylinder seat is mounted in the inside of the fixed tube, and the brake piston is sealingly and movably connected to the brake cylinder; The knob seat is sleeved on the fixed tube, the brake knob is rotatably sleeved on the knob seat, 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 of claim 1, wherein, The control structure further comprises a brake roller and a connecting pin; The side wall of the knob seat and the side wall of the fixed tube are provided with guide holes, the inner side wall of the brake knob is further provided with an inclined sliding groove, one end of the connecting pin is connected to the brake piston, and the other end of the connecting pin passes through the guide holes and is connected to the brake roller, the brake roller is arranged in the inclined sliding groove and can slide along the length direction of the inclined sliding groove, and the length of the guide hole is not less than the maximum movement stroke of the connecting pin.

3. The control structure of claim 2, wherein, The brake knob comprises an inner ring, an outer ring and an anti-skid sleeve, and the knob seat is provided with an annular groove; The inclined sliding groove is arranged 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 the axial direction of the inner ring; the inner ring is rotatably sleeved on the annular groove, and the annular groove is used for limiting 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 is matched with the limiting groove and is used for limiting the circumferential rotation of the outer ring; The anti-skid sleeve is sleeved on the brake knob.

4. The control structure of claim 3, wherein, The control structure further comprises a clamping spring, the inner ring comprises a first inner half ring and a second inner half ring, the inner ring is spliced by the first inner half ring and the second inner half ring, the outer wall of the inner ring is provided with a clamping spring groove, and the clamping spring is embedded in the clamping spring groove; the first inner half ring is provided with a plurality of positioning columns, the second inner half ring is provided with a plurality of positioning holes matched 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 of claim 3, wherein, The reset member is a torsion spring, the torsion spring is sleeved on the knob seat, the annular groove in the knob seat is provided with a first connecting protrusion connected to one end of the torsion spring, and the inner wall of the inner ring is provided with a second connecting protrusion connected to the other end of the torsion spring.

6. The control structure of claim 2, wherein, The control structure further comprises a cylinder cover, the cylinder cover covers the brake cylinder; the brake piston comprises a brake push rod, a reset spring, an external nut and a sealing column; The brake push rod is provided with an oil injection hole extending along the axial direction of the brake push rod, one end of the brake push rod is provided with a piston part matched with the brake cylinder, the other end of the brake push rod passes through the cylinder cover and is connected to the external nut; the external nut is used for connecting the connecting pin; The reset spring is arranged in the brake cylinder, and the reset spring is connected to the bottom wall of the brake cylinder and the end wall of the piston part of the push rod; The sealing column is threadedly connected in the oil injection 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 injection hole are sealed through the plurality of sealing rings.

7. The control structure of claim 6, wherein, A guide structure is arranged between the brake push rod and the cylinder cover.

8. The control structure of claim 6, wherein, The control structure further comprises an oil cavity sealing plate made of elastic material and an oil cavity sealing cover with air holes; The outer wall of the brake oil cylinder is provided with a balance oil groove, the bottom of the balance oil groove is provided with an oil passage hole communicating with the inside of the brake oil cylinder, the oil cavity sealing plate covers and seals the balance oil groove, the oil cavity sealing cover covers the balance oil groove, so that a balance oil cavity is formed between the balance oil groove and the oil cavity sealing cover; the distance between the oil passage hole and the bottom wall of the brake oil cylinder is not less than the distance between the end wall of the piston part of the brake push rod when it is not subjected to force and the bottom wall of the brake oil cylinder.

9. Bicycle comprising a control structure as claimed in any of the claims 1-8, characterized in that The bicycle further comprises a handlebar, two ends of the handlebar form handle grips, and the fixing tube is a handle grip at any one end or both ends of the handlebar.

10. Bicycle comprising a control structure as claimed in any of the claims 1-8, characterized in that The bicycle further comprises a handlebar, and the fixing tube is mounted on the handlebar and communicates with the inside of the handlebar. The bicycle further comprises a handlebar, two ends of the handlebar form handle grips, and the fixing tube is a handle grip at any one end or both ends of the handlebar.

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