Cable-driven hydraulic conversion pump, handlebar and two-wheeled vehicle

Abstract

The present invention relates to a cable-driven hydraulic conversion pump, a handlebar, and a two-wheeled vehicle. The cable-driven hydraulic conversion pump is fitted on and used with a handlebar and comprises a pump body, wherein the pump body is provided with: at least one cylinder chamber which is formed in the pump body and in radial communication with an oil outlet; at least one oil sump chamber which is formed in the pump body and is in communication with the cylinder chamber through a communication hole, a brake fluid being provided in each of the oil sump chamber and the cylinder chamber; a cable-driven hydraulic actuator, which is arranged in the cylinder chamber so as to drive the brake fluid in the cylinder chamber to be discharged from the oil outlet during a braking action; and a hydraulic pressure balancer, which is arranged in the oil sump chamber so as to supply brake fluid into the cylinder chamber during the braking action to balance a hydraulic brake pressure. The present invention reduces the exposure of a cable-driven hydraulic conversion pump, a pull cable and an oil pipe, and even allows them to be completely concealed within the handlebar, combining the advantages of a cable-driven disc brake and a hydraulic disc brake to achieve a smooth braking effect.

Description

A wire-pull oil pressure conversion pump, handlebar and two-wheeled vehicle Technical Field

[0001] The present invention relates to the technical field of vehicle brake accessories, and in particular to a wire-pull oil pressure conversion pump, a handlebar and a two-wheeled vehicle. Background Art

[0002] A cable-operated hydraulic disc brake is a new type of disc brake currently on the market that combines both cable-operated and hydraulic disc brakes. It offers the advantages of both, with lower costs and a superior braking experience. A key component of a cable-operated hydraulic disc brake is the cable-operated hydraulic pressure conversion pump, which converts the pull force of the cable brake lever into hydraulic pressure, which is then pumped down to the hydraulic pump.

[0003] Existing cable-pull hydraulic pressure conversion pumps are generally installed at the front end of the handlebars. On the one hand, the large exposure of the pump body will affect the appearance of the entire vehicle and increase the risk of damage; on the other hand, the pump body installed on the vehicle body will inevitably cause changes in the routing of the cable and oil pipe and expose the cable pipe, creating safety hazards and worsening the aesthetics; and after the cable-pull hydraulic brake system has been used for a period of time, as the brake pads wear, the piston in the brake lower pump will need more brake fluid pressure to advance forward to brake, and insufficient brake fluid pressure will cause brake failure.

[0004] To this end, we propose a wire-pull oil pressure conversion pump, a handlebar and a two-wheeled vehicle. Summary of the Invention

[0005] The present application provides a wire-pull oil pressure conversion pump, a handlebar and a two-wheeled vehicle, so as to at least solve the problem in the prior art that the wire-pull oil pressure conversion pump is generally assembled at the front end of the handlebar, affecting the appearance of the entire vehicle and increasing the risk of damage. In addition, as the brake pads wear, the piston in the brake lower pump will need more brake oil pressure to advance forward to brake, and insufficient brake oil pressure will cause brake failure.

[0006] In a first aspect, the present application provides a wire-pull oil pressure conversion pump, which is used in conjunction with a handlebar assembly, and includes a pump body, on which is provided:

[0007] There is at least one oil cylinder cavity, which is opened on the pump body and radially connected to the oil outlet;

[0008] There is at least one oil pool cavity, which is opened on the pump body and communicates with the oil cylinder cavity through a communication hole, and both the oil pool cavity and the oil cylinder cavity contain brake fluid;

[0009] a wire-pull oil driving member, which is arranged in the oil cylinder cavity to drive the brake oil in the oil cylinder cavity to be discharged from the oil outlet when the brake is actuated;

[0010] The oil pressure balance member is arranged in the oil pool cavity to replenish brake oil into the oil cylinder cavity during braking action to balance the brake oil pressure.

[0011] Optionally, the line-pull oil drive component includes:

[0012] A piston pull rod is movably assembled in the oil cylinder cavity, and a hollow hole for passing a pull wire is axially opened in the middle thereof;

[0013] a sealing ring, which is movably sleeved on the first end of the piston pull rod and limitedly assembled on the step portion formed on the inner wall of the cylinder cavity;

[0014] a second piston ring, which is radially sleeved on a stage formed in the middle of the piston pull rod, and whose outer wall surface abuts against the inner wall of the cylinder cavity; a brake oil chamber is formed between the second piston ring and the sealing ring, and the brake oil chamber is connected to the communicating hole and the oil outlet;

[0015] A plug base is threadedly assembled on the first open end of the oil cylinder cavity and presses and fixes the axial position of the sealing ring, and a first movable cavity is defined in the center thereof;

[0016] an elastic member, one end of which is limitedly assembled in the hollow hole and the other end of which extends into the first movable cavity to provide an elastic restoring force after the piston rod moves;

[0017] an end cover plate, which covers the second open end of the cylinder cavity to limit the starting point of the stroke of the piston rod and is provided with a second assembly hole;

[0018] The first end of the wire clip terminal passes through the second assembly hole and is threadedly assembled with the second end of the piston pull rod, and a wire locking screw is provided on the wire clip terminal to fix the pull wire.

[0019] Optionally, the line-pull oil drive component further includes:

[0020] A wire sleeve, which is inserted into the plug base to pass the pull wire;

[0021] A sealing screw sleeve is threadedly assembled with an end of the plug base away from the sealing ring to fix the threading sleeve and close the first open end of the cylinder cavity.

[0022] Optionally, the oil pressure balancing element includes:

[0023] a piston body, which is movably assembled in the oil pool cavity and has an axially penetrating fluid replenishing channel;

[0024] An oil seal plug, wherein the outer thread section is threadedly assembled with the inner thread surface formed on the inner wall of the fluid replenishing channel to seal the fluid replenishing channel;

[0025] The oil pool cover is fixedly assembled on the open end of the oil pool cavity by screws, and a first assembly hole connected to the external atmospheric pressure is opened on the oil pool cover, and the diameter of the first assembly hole is at least larger than the bolt head diameter of the oil seal bolt.

[0026] Optionally, an oil sealing conical surface is provided in the inner cavity of the fluid infusion channel, and the plug tail of the oil sealing plug is formed with a conical plug tail that cooperates with the oil sealing conical surface to seal the fluid infusion channel.

[0027] Optionally, the oil pressure balance member further includes:

[0028] The oil filling edge hole is opened in the middle of the length of the oil seal plug, and its first end penetrates the bolt head of the oil seal plug, and its second end penetrates the annular side wall of the oil seal plug near the tapered bolt tail.

[0029] Optionally, a first piston ring is sleeved on the piston body, and the first piston ring is sealed with the inner wall surface of the oil pool cavity.

[0030] Optionally, the pump body is provided with an assembly portion, and screws or rivets are provided in the assembly portion to fix the wire-pull oil pressure conversion pump to the handlebar.

[0031] In a second aspect, the present application provides a handlebar, the handlebar having at least a horizontal portion and a vertical portion;

[0032] Among them, the stem part is arranged on one side of the middle part of the handlebar part, and an assembly cavity is opened at the bottom end of the handlebar part corresponding to the position of the stem part. The assembly cavity has an expansion branch cavity extending into the stem part, and the assembly cavity is equipped with the wire-pull oil pressure conversion pump described in the first aspect above.

[0033] In a third aspect, the present application provides a two-wheeled vehicle having the wire-pull oil pressure conversion pump described in the first aspect above.

[0034] Compared with related technologies, the wire-pull hydraulic conversion pump, handlebar, and two-wheeled vehicle provided by this application have at least the following technical effects:

[0035] The cable-pull hydraulic conversion pump is concealedly installed in a non-obtrusive position on the handlebars that does not interfere with the operation of the vehicle, so that the cable is shortened in length and less exposed, or even completely hidden. At the same time, after the oil pipe is connected, it can directly enter the frame along the handlebar stem, so that the exposed length of the oil pipe is shortened or even completely hidden. It combines the advantages of cable-pull disc brakes and hydraulic disc brakes, uses less braking force, and achieves a smooth braking effect. At the same time, through the installation of hydraulic balance parts, when the brake pads wear as the vehicle is ridden, during the braking process, the brake oil in the oil pool cavity automatically replenishes the oil cylinder cavity with reduced pressure, thereby maintaining sufficient oil in the brake system for braking, thereby ensuring the vehicle's braking performance.

[0036] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] FIG1 is a schematic diagram of the three-dimensional structure of a wire-pull oil pressure conversion pump according to an exemplary embodiment.

[0039] FIG2 is a schematic diagram of a pump structure according to an exemplary embodiment.

[0040] FIG3 is an exploded view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment.

[0041] FIG. 4 is an exploded view of an oil pressure balancing member according to an exemplary embodiment.

[0042] FIG5 is a schematic diagram of the three-dimensional structure of a wire-pull oil pressure conversion pump according to another exemplary embodiment.

[0043] FIG6 is an assembly diagram of a cable-pull oil pressure conversion pump and a handlebar according to another exemplary embodiment.

[0044] FIG. 7 is a schematic perspective structural diagram of a wire-pull oil pressure conversion pump according to a third exemplary embodiment.

[0045] FIG8 is an assembly diagram of a cable-pull oil pressure conversion pump and a handlebar according to another exemplary embodiment.

[0046] Description of reference numerals:

[0047] Pump body 10: oil cylinder chamber 101, oil pool chamber 102, communication hole 103, oil outlet 104, assembly part 105;

[0048] Hydraulic balance component 20: piston body 201, first piston ring 2011, fluid replenishment channel 202, oil seal plug 203, tapered plug tail 2031, oil filling edge hole 204, oil pool cover 205, first assembly hole 40351, screw 206;

[0049] Wire-pull oil drive component 30: piston rod 301, second piston ring 302, end cover 303, second assembly hole 3031, wire clip terminal 304, elastic member 305, plug base 306, sealing screw sleeve 307, threading sleeve 308, sealing ring 309. DETAILED DESCRIPTION

[0050] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] In the related art, the key component of a cable-operated hydraulic disc brake is the cable-operated hydraulic pressure conversion pump, which converts the cable pull force from the cable brake lever into hydraulic pressure and delivers it to the hydraulic pressure pump. Existing cable-operated hydraulic pressure conversion pumps also suffer from the shortcomings of traditional hydraulic disc brakes. After a period of use, as the brake pads wear, the piston in the brake pressure pump requires more brake fluid pressure to advance to brake the vehicle. Insufficient brake fluid pressure can cause brake failure.

[0054] At this time, it is necessary to open the oil hole sealed by the oil seal plug to replenish the brake oil into the cylinder cavity. The oil hole is generally opened on the oil pool cavity connected to the cylinder cavity. The opening of the oil hole will allow air to enter the brake system, but in the process of replenishing fluid and expelling air, due to the limitation of the oil circuit, the air in the brake system may not be completely discharged. The retained air will cause the brake failure of the brake system after replenishing fluid to not be improved, and the risk may even be greater.

[0055] Based on the above situation, an embodiment of the present invention provides an oil pressure balancing structure, a wire-pull oil pressure conversion pump and a vehicle, which are described in detail below with reference to specific embodiments and drawings. Example 1

[0056] An embodiment of the present invention provides a wire-pull oil pressure conversion pump, which is used in conjunction with a handlebar assembly and includes a pump body 10. FIG1 is a schematic diagram of the three-dimensional structure of a wire-pull oil pressure conversion pump according to an exemplary embodiment. Referring to FIG1 , the pump body 10 of the wire-pull oil pressure conversion pump is provided with an assembly portion 105, and the assembly portion 105 is provided with screws or rivets to fix the wire-pull oil pressure conversion pump to the handlebar. It can be understood that, referring to FIG1 , through the cooperation of the assembly portion 105 and the screws or rivets, the wire-pull oil pressure conversion pump can be assembled on any position on the handlebar that does not interfere with the riding of the vehicle, such as the front side of the handlebar stem, the lower side of the handlebar crossbar, etc.; further, the handlebar can be replaced with a fixing component that is compatible with the assembly portion 105 to ensure that the pump body 10 is hidden or not obtrusive on the handlebar, so as to meet the replacement of the existing road vehicle hydraulic disc brake when assembled on the existing handlebar. On the one hand, it reduces the installation cost, and on the other hand, the manufacturer does not need to redesign the frame and improve the production equipment, thereby reducing the production cost.

[0057] Figure 2 is a schematic diagram of a pump body structure according to an exemplary embodiment. Figure 3 is an exploded view of a wire-pull oil pressure conversion pump structure according to an exemplary embodiment. Referring to Figures 1-3, the pump body is provided with:

[0058] There is at least one oil cylinder cavity 101 which is formed through the pump body 10 and is radially connected to an oil outlet 104 . In this embodiment, referring to FIG. 1-2 , there are two oil cylinder cavities 101 which are arranged in parallel.

[0059] There is at least one oil sump chamber 102 , which is disposed on the pump body 10 and communicates with the cylinder chamber 101 via a communication hole 103 . Both the oil sump chamber 102 and the cylinder chamber 101 contain brake fluid sufficient to meet braking requirements. In this embodiment, referring to Figures 1-2 , there are two oil sump chambers 102 . The two oil sump chambers 102 are disposed on the same horizontal axis with their open ends symmetrically distributed. Each oil sump chamber 102 communicates with each cylinder chamber 101 via a communication hole 103 in a one-to-one correspondence.

[0060] The wire-pull oil drive member 30 is disposed within the oil cylinder chamber 101 to drive the brake fluid within the oil cylinder chamber 101 to be discharged from the oil outlet 104 during braking. In this embodiment, there are two oil cylinder chambers 101, and the wire-pull oil drive member 30 is also two and is located in each of the two oil cylinder chambers 101;

[0061] The oil pressure balance member 20 is disposed in the oil pool chamber 102 to replenish brake oil into the cylinder chamber 101 during braking to balance the brake oil pressure.

[0062] In the technical solution of the above embodiment, when installed on a bicycle, it is used in conjunction with a brake handle, an oil pipe and a brake lower pump. Specifically, there are two brake handles, which are respectively assembled at both ends of the handlebars and respectively connected by a pull wire to pull the oil drive member 30, so that when the brake handle moves, the pull wire pulls the oil drive member 30 to move in the oil cylinder cavity 101; there are two oil pipes, whose first ends are respectively connected to the two oil outlets 104; there are two brake lower pumps, which are respectively assembled at the front / rear wheel of the bicycle frame and are arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to apply oil pressure to the disc;

[0063] 1-3 , when a single-side brake handle is squeezed, one of the cables is pulled to drive the single cable-pull oil drive member 30 axially forward in the oil cylinder chamber 101 and drive the oil in the oil cylinder chamber 101 to be discharged through one of the oil outlets 104 , and then enter the brake lower pump at the front / rear wheel through the oil pipe. The brake lower pump clamps the front / rear wheel disc to apply hydraulic braking, and the oil circuit is smooth and the braking is stable.

[0064] When the brake handle on the other side is squeezed, another cable is pulled to drive the single cable oil drive component 30 to move axially forward in the cylinder cavity 101 and drive the oil in the cylinder cavity 101 to be output through another oil outlet 104, which is the same as the above principle process. It then enters the brake lower pump at the front / rear wheel through the oil pipe, and the brake lower pump clamps the disc of the front / rear wheel for hydraulic braking. The oil circuit is smooth and the braking is stable.

[0065] Continuing to refer to Figures 1-3, in this embodiment, the wire-pull oil drive component 30 is disposed in the oil cylinder cavity 101 and includes:

[0066] The piston rod 301 is movably assembled in the cylinder cavity 101 and has a hollow hole axially opened in the middle thereof for passing the pull wire;

[0067] A sealing ring 309 is movably mounted on the first end of the piston rod 301 and is positionally mounted on a stepped portion formed on the inner wall of the cylinder chamber 101;

[0068] The second piston ring 302 is radially sleeved on the stage formed in the middle of the piston rod 301, and its outer wall abuts against the inner wall of the cylinder cavity 101. A brake oil chamber is formed between the second piston ring 302 and the sealing ring 309, and the brake oil chamber is connected to the connecting hole 103 and the oil outlet 104;

[0069] The plug base 306 is threadedly assembled on the first open end of the cylinder cavity 101 and presses and fixes the axial position of the sealing ring 309, and a first movable cavity is defined in the center thereof;

[0070] The elastic member 305 has one end limitedly assembled in the hollow hole and the other end extending into the first movable cavity to provide elastic restoring force after the piston rod 301 moves;

[0071] The end cover plate 303 covers the second open end of the cylinder cavity 101 to limit the starting point of the stroke of the piston pull rod 301, and is provided with a second assembly hole 3031; referring to Figure 4, the end cover plate 303 and the oil pool cover 205 are an integrally formed structure, saving parts and reducing assembly processes.

[0072] The first end of the wire clip terminal 304 passes through the second assembly hole 3031 and is threadedly assembled with the second end of the piston rod 301, and a wire locking screw is provided on the wire clip terminal to fix the wire.

[0073] Continuing to refer to FIG. 3 , in this embodiment, the line-pull oil drive component 30 further includes:

[0074] A wire sleeve 308 is inserted into the plug base 306 to pass the pull wire;

[0075] The sealing screw sleeve 307 is threadedly assembled with the end of the plug base 306 away from the sealing ring 309 to fix the threading sleeve 308 and seal the first open end of the cylinder cavity 101.

[0076] In the technical solution of the above embodiment, a single cable-pull oil drive component 30 is used in conjunction with a brake handle and an oil pressure pump when installed on a bicycle. Specifically, the first end of the cable is connected to the brake handle, and the second end passes through the hollow hole of the cable-pull oil drive component 30 and is fixed to the cable clip terminal 304 via a locking screw; the first end of the oil pipe is connected to the oil outlet 104 via an oil pipe joint, and the second end is connected to the oil pressure pump assembled at the front / rear wheel of the bicycle frame;

[0077] When the brake handle is squeezed, the piston rod 301 is pulled by the pull wire and moves axially forward in the cylinder cavity 101 and drives the brake oil in the brake oil cavity to be discharged through the oil outlet 104 through the second piston ring 302, and then enters the oil pressure pump at the front / rear wheel through the oil pipe. The oil pressure pump clamps the disc of the front / rear wheel for oil pressure braking. The oil circuit is smooth and the braking is stable.

[0078] FIG4 is an exploded view of an oil pressure balance member according to an exemplary embodiment. Referring to FIG1-4 , in this embodiment, the oil pressure balance member is disposed in the oil pool cavity 102 and includes:

[0079] The piston body 201 is movably assembled in the oil pool cavity 102 and has an axially extending fluid replenishment channel 202 formed thereon. A first piston ring 2011 is sleeved on the piston body 201 and has an interference fit with the inner wall of the oil pool cavity 102.

[0080] The oil seal plug 203 has an external threaded section at its center, which is threadably assembled with the internal threaded surface formed on the inner wall of the fluid replenishment channel 202 to seal the fluid replenishment channel 202. An oil seal tapered surface is provided in the inner cavity of the fluid replenishment channel 202, and a tapered tail 2031 is formed at the tail of the oil seal plug 203 to cooperate with the oil seal tapered surface to seal the fluid replenishment channel 202.

[0081] The oil sump cover 205 is fixedly assembled to the open end of the oil sump chamber 102 by screws 206 and defines a first assembly hole 2051 for communicating with the external atmospheric pressure. It is understood that the diameter of the first assembly hole 2051 is at least larger than the diameter of the plug head of the oil seal 203. Preferably, the inner cavity of the first assembly hole 2051 extends to the oil filling edge hole 204, facilitating access to the output port of the oil filling tool, thereby facilitating brake fluid replenishment.

[0082] The oil filling edge hole 204 is opened in the middle of the length of the oil seal plug 203, and its first end penetrates the plug head of the oil seal plug, and its second end penetrates the annular side wall of the oil seal plug 203 near the tapered plug tail 2031.

[0083] In the technical solution of the above embodiment, referring to Figures 1-2 and 4 , in the initial state, the piston body 201 is located in the oil sump chamber 102 near the open end of the oil sump chamber 102 and is limited in travel by the oil sump cover 205 . As the brake pads wear, during braking, the brake fluid in the oil sump chamber 102 automatically replenishes into the cylinder chamber 101 where the pressure decreases, and the piston body 201 moves in the direction of brake fluid output, thereby maintaining sufficient fluid volume in the brake system for braking.

[0084] When the brake fluid needs to be replenished in the pump body 10, the output port of the oil filling tool is inserted into the oil filling hole 204 and a small amount of brake fluid is pre-injected to expel the residual air in the oil filling hole 204 and the fluid replenishing channel 202. Then, the bolt head of the oil seal bolt 203 is twisted with a tool and slightly loosened along the thread direction for a certain stroke. At this time, the tapered bolt tail 2031 and the middle of the oil seal conical surface form an annular liquid inlet channel, which is connected to the second end of the oil filling hole 204. At this time, the injected brake fluid can directly enter the oil pool cavity 102, and no air will enter the braking system, thereby achieving rapid brake fluid replenishment and ensuring the vehicle's braking performance.

[0085] At the same time, it can be understood that at this time, the oil seal plug 203 is provided with a sealing ring 409, and the sealing ring 409 and the inner wall surface of the fluid replenishing channel 202 are still in a sealed state to prevent the brake fluid from leaking during the fluid replenishing state.

[0086] It is understandable that during long-term use, as the brake pads wear, the brake fluid in the oil pool chamber 102 can automatically replenish the cylinder chamber 101 with reduced pressure, so that an expansion margin will gradually be formed between the piston body 201 and the oil pool cover 205. When braking, the brake fluid will conduct the heat of the brake pads and expand due to the heat. The volume-expanded brake fluid can enter the oil pool chamber 102 through the connecting hole 103 in the cylinder chamber 101 to achieve pressure balance, thereby avoiding the risk of disc locking and maintaining and optimizing the smooth braking effect of the hydraulic disc brake; at this time, the brake fluid entering the oil pool chamber 102 will push the piston body 201 to move in the oil pool chamber 102 toward the side of the oil pool cover 205 to accommodate the expansion volume required by the brake fluid; when the temperature of the brake fluid drops, its volume shrinks and automatically flows back to the cylinder chamber 101 with reduced pressure, and the piston body 201 is also gradually restored to its original position under the action of the external atmospheric pressure as the brake fluid flows back.

[0087] It is further understood that, when loading onto a vehicle, a certain expansion margin may be directly provided between the piston body 201 and the oil pool cover 205 to directly provide a capacity to accommodate the expansion volume of the brake fluid.

[0088] In summary, the cable-pull oil pressure conversion pump provided in the embodiment of the present invention is installed in a position where the cable-pull oil pressure conversion pump does not interfere with the operation of the handlebar and is not obtrusive, so that the length of the cable is shortened and the exposure is reduced. Furthermore, the cable can be passed through the handlebar cross tube to hide the cable. At the same time, after the oil pipe is connected, it can directly enter the frame along the handlebar stem, so that the exposed length of the oil pipe is shortened or even completely hidden. It combines the advantages of cable-pull disc brakes and oil pressure disc brakes, uses smaller braking force, and achieves a smooth braking effect. At the same time, through the assembly of oil pressure balance parts, when the brake pads wear as the vehicle is ridden, during the braking process, the brake oil in the oil pool cavity 102 automatically replenishes the oil in the oil cylinder cavity 101 with reduced pressure, thereby maintaining sufficient oil in the brake system for braking, thereby ensuring the braking performance of the vehicle. Example 2

[0089] Example 2 of the present application provides a wire-pull oil pressure conversion pump, which is assembled and used with a handlebar and includes a pump body 10. Figure 5 is a schematic diagram of the three-dimensional structure of a wire-pull oil pressure conversion pump according to another exemplary embodiment. This Example 2 differs from Example 1 in that there are two oil pool cavities 102, which are located on the same horizontal axis and have their open ends distributed in the same direction and arranged perpendicularly to the cylinder cavity 101. Each oil pool cavity 102 is connected to each cylinder cavity 101 in a one-to-one correspondence via a connecting hole 103.

[0090] For other structures not described, refer to Example 1.

[0091] Furthermore, embodiment 2 of the present application also provides a handlebar. FIG6 is an assembly diagram of a cable-driven oil pressure conversion pump and a handlebar according to another exemplary embodiment. The handlebar has at least a horizontal portion 40 and a vertical portion 50; and the handlebar also includes a brake lever 60, which is fixed to the two free ends of the horizontal portion 40 and connected to a cable. In this embodiment, a hollow hole for the cable to pass through is provided in the horizontal portion 40. The hollow hole and the assembly cavity 401 are interconnected. The other end of the cable runs along the handlebar and connects to the driving end of the pump body 10. The horizontal portion 40 is generally a cylindrical structure or a tubular structure, which can hide the cable. No cable is exposed on the entire vehicle. On the one hand, the appearance of the frame is more neat and beautiful. On the other hand, the absence of exposed cable can also protect the cable and avoid accidental damage to the cable.

[0092] In conjunction with the arrangement of the assembly portion 105 , at least one assembly hole 403 is provided at the bottom end of the handlebar portion 40 to cooperate with screws or rivets to fix the pump body 10 , so as to facilitate the assembly of the wire-pull oil pressure conversion pump of Example 2 of the present application.

[0093] The stem portion 50 is disposed on one side of the middle portion of the handlebar portion 40 . An assembly cavity 401 is defined at the bottom end of the handlebar portion 40 corresponding to the position of the stem portion 50 . The assembly cavity 401 has an expansion branch cavity 402 extending into the stem portion 50 . The cable-pull hydraulic pressure conversion pump of the second embodiment is mounted in the assembly cavity 401 .

[0094] Continuing with FIG6 , the assembly cavity 401 and the expansion branch cavity 402 form a T-shaped structure, and the oil outlet 104 is disposed toward the expansion branch cavity 402. It is understood that when the oil outlet 104 has a direct extension-shaped tube, the extension tube also extends into the expansion branch cavity 402. A tubing terminal for tubing assembly is connected to the oil outlet 104, and the first end of the tubing extends into the expansion branch cavity 402.

[0095] A stem hole 501 for assembling a front fork stem is provided at one end of the stem portion 50 away from the handlebar portion 40 , and an access port for an oil pipe to pass through is provided on the front fork stem.

[0096] In the technical solution of the above embodiment, the pump body 10 is assembled in the assembly cavity 401 opened in the middle of the bottom end of the crossbar 40, which can realize the hidden assembly of the pump body 10. At the same time, the oil outlet 104 is arranged toward the expansion branch cavity 402, and the expansion branch cavity 402 of the assembly cavity 401 can accommodate the hidden oil outlet 104 and the oil pipe joint, thereby preventing the oil pipe from being exposed. The oil pipe passes through the access port and enters the riser hole 501 and runs inside the frame, thereby preventing the oil pipe from being exposed, and improving the appearance of the entire vehicle.

[0097] Furthermore, the front section of the oil pipe can be hidden and covered by the expanded branch cavity 402, and then passed through the access port on the front fork seat tube to enter the frame, hiding the oil pipe. The entire vehicle does not have any exposed oil pipe, which is more neat and beautiful, and can effectively protect the oil pipe. Example 3

[0098] Embodiment 3 of the present application provides a wire-pull oil pressure conversion pump, which is used in conjunction with a handlebar assembly and includes a pump body 10. Figure 7 is a schematic diagram of the three-dimensional structure of the wire-pull oil pressure conversion pump according to the third exemplary embodiment. The difference between this embodiment 3 and embodiments 1-2 is that the number of the oil pool cavity 102 is one, the oil pool cavity 102 is opened on one side of the two oil cylinder cavities 101, and the single oil pool cavity 102 is connected to the two oil cylinder cavities 101 through two connecting holes 103 respectively; that is, the single oil pool cavity 102 supplies oil to the two oil cylinder cavities 101, and the overall appearance of the pump body 10 in this embodiment 3 is a rectangular structure, and the shape is more regular.

[0099] For other structures not described, refer to Example 1.

[0100] Furthermore, embodiment 2 of the present application also provides a handlebar. FIG8 is an assembly diagram of a cable-pull oil pressure conversion pump and a handlebar according to a third exemplary embodiment. The handlebar has at least one horizontal portion 40 and one vertical portion 50;

[0101] The stem portion 50 is disposed on one side of the middle portion of the handlebar portion 40. An assembly cavity 401 is provided at the bottom end of the handlebar portion 40 at a position corresponding to the stem portion 50. The assembly cavity 401 has an extended branch cavity 402 extending into the stem portion 50. The cable-pull oil pressure conversion pump of the above-mentioned embodiment 2 is assembled in the assembly cavity 401. As shown in Figures 7 and 8, in this embodiment, the assembly cavity 401 and the extended branch cavity 402 form a nearly rectangular structure, and the oil outlet 104 is arranged toward the extended branch cavity 402. It is understandable that when the oil outlet 104 has a direct extension-shaped tube, the extension tube also extends and is arranged into the extended branch cavity 402. The oil outlet 104 is connected to an oil pipe terminal for oil pipe assembly, and the first end of the oil pipe extends and is arranged into the extended branch cavity 402.

[0102] In conjunction with the arrangement of the assembly portion 105 , at least one assembly hole 403 is provided at the bottom end of the handlebar portion 40 to cooperate with screws or rivets to fix the pump body 10 , so as to facilitate the assembly of the wire-pull oil pressure conversion pump of Example 2 of the present application.

[0103] In the technical solution of the above embodiment, the nearly rectangular assembly cavity 401 and the expanded branch cavity 402 can fully adapt to wire-pull oil pressure conversion pumps of different shapes, so that the shortest path of the oil pipe connecting the oil outlet 104 is the best choice, which can minimize the exposure of the oil pipe at the bottom end of the integrated handlebar to maintain its appearance.

[0104] For other structures not described, refer to Example 2. Example 4

[0105] Embodiment 4 of the present application provides a two-wheeled vehicle having a wire-pull oil pressure conversion pump according to any one of the above embodiments 1-3.

[0106] At the same time, it can be understood that the embodiment of the present application only lists the typical shapes of the assembly cavity 401, and its specific shape is not limited to T-shape or bar shape, etc.; at the same time, the assembly cavity 401 is not limited to the handlebars of two-wheeled bicycles, but can also be applied to frames with handlebars such as electric two-wheeled bicycles and scooters.

[0107] In summary, the cable-pull oil pressure conversion pump, handlebar and two-wheeled vehicle provided in the embodiments of the present invention conceal the cable-pull oil pressure conversion pump in a position on the handlebar that does not interfere with the operation and is not obtrusive, so that the cable is shortened in length and less exposed or even completely hidden. At the same time, after the oil pipe is connected, it can directly enter the frame along the handlebar stem, so that the exposed length of the oil pipe is shortened or even completely hidden. It combines the advantages of cable-pull disc brakes and oil pressure disc brakes, uses smaller braking force, and achieves a smooth braking effect. At the same time, through the assembly of the oil pressure balance part 20, when the brake pads wear as the vehicle is ridden, during the braking process, the brake oil in the oil pool cavity 102 automatically replenishes the oil in the oil cylinder cavity 101 with reduced pressure, thereby maintaining sufficient oil in the brake system for braking, thereby ensuring the braking performance of the vehicle.

[0108] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A wire-pulled oil pressure conversion pump, which is assembled and used in cooperation with a handlebar, is characterized in that The invention comprises a pump body, wherein the pump body is provided with: There is at least one oil cylinder cavity, which is opened on the pump body and radially connected to the oil outlet; There is at least one oil pool cavity, which is opened on the pump body and communicates with the oil cylinder cavity through a communication hole, and both the oil pool cavity and the oil cylinder cavity contain brake fluid; a wire-pull oil driving member, which is arranged in the oil cylinder cavity to drive the brake oil in the oil cylinder cavity to be discharged from the oil outlet when the brake is actuated; The oil pressure balance member is arranged in the oil pool cavity to replenish brake oil into the oil cylinder cavity during braking action to balance the brake oil pressure.

2. The wire-pulled oil pressure conversion pump according to claim 1, characterized in that, The line-pulling oil drive component comprises: A piston pull rod is movably assembled in the oil cylinder cavity, and a hollow hole for passing a pull wire is axially opened in the middle thereof; a sealing ring, which is movably sleeved on the first end of the piston pull rod and limitedly assembled on the step portion formed on the inner wall of the cylinder cavity; a second piston ring, which is radially sleeved on a stage formed in the middle of the piston pull rod, and whose outer wall surface abuts against the inner wall of the cylinder cavity; a brake oil chamber is formed between the second piston ring and the sealing ring, and the brake oil chamber is connected to the communicating hole and the oil outlet; A plug base is threadedly assembled on the first open end of the oil cylinder cavity and presses and fixes the axial position of the sealing ring, and a first movable cavity is defined in the center thereof; an elastic member, one end of which is limitedly assembled in the hollow hole and the other end of which extends into the first movable cavity to provide an elastic restoring force after the piston rod moves; an end cover plate, which covers the second open end of the cylinder cavity to limit the starting point of the stroke of the piston rod and is provided with a second assembly hole; The first end of the wire clip terminal passes through the second assembly hole and is threadedly assembled with the second end of the piston rod, and a wire locking screw is provided on the wire clip terminal to fix the wire.

3. The wire-pulled oil pressure conversion pump according to claim 1, wherein, The line-pull oil drive component also includes: A wire sleeve, which is inserted into the plug base to pass the pull wire; A sealing screw sleeve is threadedly assembled with an end of the plug base away from the sealing ring to fix the threading sleeve and close the first open end of the cylinder cavity.

4. The wire-pulled oil pressure conversion pump according to claim 1, wherein The oil pressure balancing member includes: a piston body, which is movably assembled in the oil pool cavity and has an axially penetrating fluid replenishing channel; An oil seal plug, wherein the outer thread section is threadedly assembled with the inner thread surface formed on the inner wall of the fluid replenishing channel to seal the fluid replenishing channel; The oil pool cover is fixedly assembled on the open end of the oil pool cavity by screws, and a first assembly hole connected to the external atmospheric pressure is opened on the oil pool cover, and the diameter of the first assembly hole is at least larger than the bolt head diameter of the oil seal bolt.

5. The wire-pulled oil pressure conversion pump according to claim 4, wherein, An oil sealing conical surface is provided in the inner cavity of the fluid replenishing channel, and a plug tail of the oil sealing plug is formed with a conical plug tail that cooperates with the oil sealing conical surface to seal the fluid replenishing channel.

6. The wire-pulled oil pressure conversion pump according to claim 5, wherein The oil pressure balance member also includes: The oil filling edge hole is opened in the middle of the length of the oil seal plug, and its first end penetrates the bolt head of the oil seal plug, and its second end penetrates the annular side wall of the oil seal plug near the tapered bolt tail.

7. The wire-pulled oil pressure conversion pump according to claim 4, wherein The piston body is sleeved with a first piston ring, which is sealed with the inner wall surface of the oil pool cavity.

8. The wire-pulled oil pressure conversion pump according to claim 1, characterized in that An assembly part 105 is provided on the pump body, and screws or rivets are fitted and passed through the assembly part 105 to fix the wire-pull oil pressure conversion pump to the handlebar.

9. A handlebar, characterized in that, The handlebar has at least a crossbar part and a stem part; Wherein, the stem part is arranged on one side of the middle of the crossbar part, an assembly cavity is formed at the bottom end of the crossbar part corresponding to the position of the stem part, the assembly cavity has an extended branch cavity extending into the stem part, and the wire-pull oil pressure conversion pump according to any one of claims 1-7 is assembled in the assembly cavity.

10. A two-wheeled vehicle, characterized in that: It has the wire-pull oil pressure conversion pump according to any one of claims 1-8.

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