A hydraulic brake device which is easy to assemble

Abstract

The application relates to a hydraulic brake device convenient for assembly, which is characterized in that oil injection holes are arranged on both sides of the device body, the oil injection holes are symmetrically arranged, assembly efficiency is higher, fault tolerance is better, the installation angle of the brake device can be accurately adjusted according to the left-right direction of a vehicle type and the layout of a vehicle frame, and meanwhile, the brake device is convenient for machining and production, the device body does not need to be turned over during machining, and machining can be simultaneously performed on both sides.

Description

Technical Field

[0001] This application relates to the field of hydraulic braking devices, and more particularly to a hydraulic braking device that is easy to assemble. Background Technology

[0002] Hydraulic disc brake systems are widely used in various types of automobiles due to their stable and reliable braking performance. The core component of this system is the hydraulic brake pump (master cylinder), which compresses brake fluid by pushing a piston with the brake lever and transmits the pressure to the caliper piston through oil lines, thus achieving the braking function. To ensure sufficient brake fluid and expel air from the system, a filler port (also known as an inlet, filler hole, or bleed hole) is usually provided on the brake pump body. Currently, most mainstream automatic vehicle hydraulic brake pumps on the market use a single set of filler ports, meaning one filler port with one sealing cap. This traditional structure reveals the following obvious defects in actual production, assembly, and use: First, low efficiency and poor fault tolerance: Because only one set of filler ports is provided, their position on the pump body is fixed. This means that when installing the brake pump assembly onto the frame, the installation angle of the pump body must be precisely adjusted according to the vehicle's left-right orientation (left-hand rear brake / right-hand front brake) and frame layout to ensure that the filler port faces upwards and is at its highest point, facilitating brake fluid filling and bleed. Assembly workers frequently need to distinguish between left and right parts and rotate the pump body to find the appropriate installation angle. This cumbersome operation significantly reduces the assembly efficiency of the production line and can easily lead to difficulties in later oil filling and venting due to incorrect installation angles, affecting product quality. Secondly, there are potential issues with sealing reliability: traditional oil filling hole seals often use a structure where a metal oil pipe joint is pressed against a rubber sealing ring. Burrs or sharp edges inevitably remain on the edges of the metal joint during manufacturing. During repeated tightening or loosening of the sealing cap, these sharp metal edges can easily scratch, cut, or even rupture the rubber sealing ring. Once the sealing ring is damaged, the oil filling hole will not seal properly, potentially causing brake fluid leakage, evaporation, or the intake of moisture and air. Brake fluid leakage pollutes the environment and reduces the amount of brake fluid; while the entry of air and moisture lowers the boiling point of the braking system, easily causing vapor lock during frequent braking, leading to brake failure and seriously threatening riding safety.

[0003] Therefore, there is an urgent need for a new type of hydraulic brake device structure to solve the problems of inconvenient assembly and poor sealing reliability in the existing technology. Utility Model Content

[0004] The technical problem this application aims to solve is that the oil injection ports of most mainstream automatic vehicle hydraulic brake pumps on the market currently adopt a single-set design, that is, one oil injection port is equipped with one sealing cap. In actual production, assembly, and use, this results in low efficiency, poor fault tolerance, and potential problems with sealing reliability. To address the above-mentioned deficiencies of the prior art, this application provides a hydraulic brake device that is easy to assemble.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is: A hydraulic braking device that is easy to assemble is constructed, including a device body. The device body is provided with a first connecting through hole for fixing the hydraulic braking device. The device body is also provided with an oil tank and a piston tank, as well as an oil guide channel communicating with the piston tank. The oil guide channel is connected to an insertion cavity, and an oil pipe joint is provided in the insertion cavity. A compensation hole is provided between the piston tank and the oil tank, through which the brake oil in the oil tank enters the piston tank. The device body is also provided with a second connecting through hole, through which a piston is connected. The piston moves in the piston tank, changing the pressure in the piston tank, causing the brake oil to enter the piston tank from the oil tank through the compensation hole, or the brake oil in the piston tank is transported to the oil pipe joint through the oil guide channel. Oil filling holes communicating with the oil tank are also provided on both sides of the device body.

[0006] Preferably, the oil injection holes on both sides of the device body are symmetrically arranged, and each oil injection hole is provided with an internal thread.

[0007] Preferably, the device body is further provided with protruding posts on both sides, the protruding posts and the axis of the oil injection hole are in the same straight line, the oil injection hole is provided with a detachable locking member, and a sealing ring is provided between the locking member and the oil injection hole.

[0008] Preferably, the protruding post has a stepped cavity, the radius of which is larger than the radius of the oil injection hole, and the end of the locking member is placed in the stepped cavity, and the radius of the end of the locking member is larger than the radius of the oil injection hole.

[0009] Preferably, the oil pipe joint includes an oil pipe inlet and an oil pipe outlet, and an oil pipe connecting the oil pipe inlet and the oil pipe outlet, wherein the oil pipe inlet is connected to an oil guide channel.

[0010] Preferably, the oil pipe connector includes a partition, one end of which forms a first connecting part and the other end forms a second connecting part. The insertion cavity is provided with a front end corresponding to the first connecting part and a rear end corresponding to the second connecting part. The front end of the insertion cavity is connected to the oil guide channel. The end of the first connecting part is provided with an oil pipe inlet hole and the end of the second connecting part is provided with an oil pipe outlet hole.

[0011] Preferably, the second connecting part is provided with a first annular groove and a second annular groove, a partition plate is provided between the first annular groove and the second annular groove, and a sealing ring is provided in both the first annular groove and the second annular groove, the sealing ring forming a seal when the first connecting part enters the front end of the insertion cavity.

[0012] Preferably, the inner diameter of the first annular groove and the second annular groove is 1.2±0.02cm, the width of the partition plate is 0.5-0.9cm, and the diameter of the sealing ring is 1.1cm.

[0013] Preferably, the second connecting part is further provided with an assembly groove, and the device body is provided with a locking hole and a second gap corresponding to the assembly groove. A locking element is provided in the locking hole. The locking element changes the size of the second gap to fix or loosen the oil pipe connector in the insertion cavity. The end of the first connecting part is provided with multiple sets of cones, and the end of the second connecting part is set in a cone shape. The radius of the front end of the insertion cavity is smaller than the radius of the rear end of the insertion cavity, and the radius of the second connecting part is slightly smaller than the radius of the front end of the insertion cavity.

[0014] Preferably, one end of the locking hole is provided with a recess, the end of the locking member is placed in the recess, and the radii of the multiple sets of cones change sequentially in the radial direction.

[0015] The beneficial effects of this application are as follows: By providing oil injection holes on both sides of the device body, and with the oil injection holes symmetrically arranged, the assembly efficiency is higher and the fault tolerance is better. The installation angle of the braking device can be precisely adjusted according to the left and right direction of the vehicle model and the frame layout. It also facilitates processing and production, as the device body does not need to be flipped during processing; both sides can be processed simultaneously. By adjusting the size of the annular groove and sealing ring of the oil pipe joint, the oil pipe joint is prevented from cutting the sealing ring, resulting in better and more reliable sealing. At the same time, the conical shape facilitates the insertion of the oil pipe joint into the device body. With the second gap and locking element, it is easier to lock and fix the oil pipe joint, and it is also easy to disassemble. The insertion cavity has a front end and a rear end, and the sealing performance of the oil pipe joint is improved by using different radii. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the present application will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural diagram of a hydraulic brake device according to a preferred embodiment of this application; Figure 2 This is a cross-sectional structural diagram of the hydraulic brake device according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of another axial side structure of the hydraulic brake device according to a preferred embodiment of this application; Figure 4 This is an exploded structural diagram of the hydraulic brake device according to a preferred embodiment of this application; Figure 5This is a front view of the oil pipe connector according to a preferred embodiment of this application; Figure 6 This is a three-dimensional structural diagram of the oil pipe connector according to a preferred embodiment of this application; Figure 7 This is a cross-sectional structural diagram of the oil pipe joint according to a preferred embodiment of this application; Figure 8 This is a schematic diagram of the axial structure of the device body according to a preferred embodiment of this application; Figure 9 This is a left-side structural schematic diagram of the device body according to a preferred embodiment of this application; Figure 10 This is a preferred embodiment of the present application. Figure 9 Schematic diagram of the cross-sectional structure along the AA direction; Figure 11 This is a schematic diagram of the axial structure of the device body in another direction, which is a preferred embodiment of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this application. Obviously, the described embodiments are some embodiments of this application, but not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0018] A preferred embodiment of this application provides a hydraulic brake device that is easy to assemble; such as... Figures 1-11As shown, the hydraulic brake device is used for braking bicycles and other vehicles. It includes a device body 10, on which a first fixed arm 100 and a second fixed arm 101 corresponding to the first fixed arm are provided. A first gap 102 is left between the first fixed arm and the second fixed arm, and a first connecting through hole 103 is provided between the first fixed arm and the second fixed arm. The hydraulic brake device is installed through the first connecting through hole 103. Both the first fixed arm and the second fixed arm are provided with locking holes 117, and the two sets of locking holes are correspondingly provided. The locking member 30 is inserted into the locking hole to bring the first fixed arm and the second fixed arm closer together to reduce the distance of the first gap 102, so as to realize the installation and disassembly of the hydraulic brake device. The device body also includes an oil reservoir 109 and a piston chamber 110, with a compensation hole 112 connecting the oil reservoir and the piston chamber. A piston is housed within the piston chamber. The device body also includes a third connecting arm 104, with a second connecting through hole 105 in its middle. One end of the piston is connected to the device body through the second connecting through hole, while the other end is placed inside the piston chamber. The piston can rotate relative to the second connecting through hole to change its position within the piston chamber and thus alter the pressure within it. One end of the oil reservoir 109 has an internal thread 1090, which connects to an oil storage pipe or compensation tank for storing brake fluid. The device body is also provided with an insertion cavity 113. A first oil guide channel 111 is provided between the insertion cavity and the piston cavity. An oil pipe joint 20 is provided in the insertion cavity. A brake oil channel is provided in the middle of the oil pipe joint. The brake oil in the oil tank is conducted to the piston chamber through the compensation hole by the piston moving in the piston chamber. It is then compressed and enters the brake oil channel through the first oil guide channel 111. Finally, it is delivered to the caliper part through the oil outlet to achieve braking.

[0019] Specifically, such as Figures 1-4 and Figures 8-11As shown, the device body 10 has a first oil injection hole 106 and a second oil injection hole 115 on its left and right sides, respectively. Both the first and second oil injection holes are connected to the oil reservoir, allowing brake fluid to be injected into the reservoir. Simultaneously, air can be expelled from the device body through either the first or second oil injection hole. For ease of machining, the first and second oil injection holes 106 and 115 are symmetrically and vertically arranged, eliminating the need to distinguish left from right during assembly of the hydraulic brake device, thus facilitating use. Furthermore, due to the left-right symmetry, the oil injection holes on both sides can be directly machined into the device body without needing to rotate it, making machining even more convenient. To improve the sealing of the oil injection port, protrusions 107 are provided on both sides of the device body corresponding to the oil injection port. The protrusions protrude from the side of the device body, and the middle of the protrusion corresponds to the oil injection port. A threaded groove is provided in the oil injection port, which can be closed by turning the locking member into the threaded groove. At the same time, a sealing ring 50 is provided between the oil injection port and the locking member 30, thereby ensuring that the oil tank thickened by tightening the locking member is completely sealed, preventing brake oil leakage and preventing air and moisture from entering. A stepped cavity 1070 is also provided on the protrusion 107, the radius of which is larger than the radius of the oil injection port. The end of the locking member 30 is placed in the stepped cavity 1070 to improve the aesthetics of the hydraulic brake device.

[0020] Furthermore, such as Figures 1-4 and Figures 10-11 As shown, one end of the oil reservoir 109 has a protrusion 108 with a ball bearing hole 1080 inside. A ball bearing 40 is installed in the ball bearing hole and communicates with the oil reservoir via the oil sealing port 1081. Since the radius of the ball bearing is larger than the radius of the oil sealing port and matches the radius of the ball bearing hole, and a sealing ring 50 is provided between the ball bearing hole and the ball bearing, the system remains sealed, preventing contamination. The protrusion can be made of aluminum alloy. During assembly, the sealing ring 50 is inserted first, and then the ball bearing 40 is pressed into the ball bearing hole to form a seal. Due to the aluminum alloy material of the protrusion, it will deform when the ball bearing is pressed in, achieving a better sealing effect, preventing brake fluid spillage, allowing the system to build up pressure better, and preventing air from entering and causing air resistance during air compression. This effectively isolates air and maintains system purity. It also prevents moisture from entering, avoiding the brake fluid absorbing moisture from the air, which could lower the boiling point of the brake fluid or cause corrosion. Furthermore, due to the presence of the protrusion 108, the height of the protrusion makes the device body easier to process, and at the same time, the protrusion increases the thickness of this part of the oil tank, making the oil tank less prone to damage.

[0021] Furthermore, such as Figures 1-11As shown, the device body 10 is provided with an insertion cavity 113, a second gap 116 is provided on one side of the insertion cavity, and a locking hole 117 is provided on the device body corresponding to the second gap. A recess 114 is provided on the other side of the locking hole. The oil pipe connector 20 is placed into the insertion cavity, and the locking member 30 is screwed into the locking hole, passing through the second gap and entering the recess. During the continuous screwing process, the size of the second gap is reduced, thereby connecting and locking the oil pipe connector to the device body. The other end of the locking member after locking is placed in the recess to prevent the end of the locking member from being exposed. The locking member and the locking hole can be locked by a threaded connection. The insertion cavity 113 includes an insertion cavity front end 1130 and an insertion cavity rear end 1131 with different radii. The radius of the insertion cavity front end is smaller than that of the insertion cavity rear end. At the same time, a first oil guide channel 111 is connected to the insertion cavity. The oil pipe connector 10 has a partition 200 divided into a first connecting part 209 and a second connecting part 208. The first connecting part is placed inside the insertion cavity rear end 1131, and the second connecting part is placed inside the insertion cavity front end 1130 and fits tightly with the insertion cavity front end. An oil pipe inlet hole 203 is provided at the second connecting part of the oil pipe connector, and an oil pipe outlet hole 201 is provided at the first connecting part. An oil pipe pipe 202 is provided inside the oil pipe and communicates with the oil pipe inlet hole and the oil pipe outlet hole. Brake oil flows into the oil pipe inlet hole 203 from the first oil guide channel and flows in the oil pipe pipe. Then it is discharged through the oil pipe outlet hole 201 and delivered to the caliper part. The surface of the second connecting part 208 is provided with an assembly groove 204, which corresponds to the locking hole 117. The locking element fixes the oil pipe connector into the insertion cavity at the assembly groove. The assembly groove is set as an annular groove, and its side can also be set as an arc shape or a plane. The second connecting part 208 is also provided with a first annular groove 205 and a second annular groove 207. A partition plate 206 is provided between the first annular groove and the second annular groove. At the same time, a sealing ring 50 is provided in both the first annular groove and the second annular groove to improve the sealing performance between the second connecting part and the front end of the insertion cavity. Usually, the oil pipe connector is made of metal. In order to avoid the sealing ring 50 being cut due to the width of the partition plate being too narrow, which would affect the sealing performance, the width of the partition plate 206 is set to 0.5-0.9cm. At the same time, the inner diameter of the first annular groove and the second annular groove is set to 1.2±0.02cm. The diameter of the sealing ring placed at the first annular groove and the second annular groove is 1.1cm. The oil pipe connector with this size setting has better sealing performance. To facilitate the insertion of the oil pipe connector into the insertion cavity, the end of the second connecting part 208 is set to be tapered, and the first connecting part 209 is formed by connecting multiple sets of tapered parts in sequence. In this application, a total of four sets of tapered parts are provided. The taper of the first tapered part 2090, the second tapered part 2091, the third tapered part 2092 and the fourth tapered part 2093 can be set to be the same or can be set to be progressively smaller. The first connecting part is connected to the brake oil connecting pipe. The friction of different tapered parts ensures better sealing of the connection between the first connecting part and the brake oil delivery pipe, and the connection is tighter and will not easily loosen.

[0022] Furthermore, such as Figures 1-4 and Figures 10-11 As shown, the piston chamber 110 and the oil chamber 109 are placed on the same plane and arranged in parallel. The piston chamber is positioned closer to the second connecting through hole 104, which facilitates the processing of the device body, reduces its size, and saves costs. The compensation hole 112 includes a first compensation through hole 1120 and a second compensation through hole 1121. The radius of the first compensation through hole is smaller than that of the second compensation through hole, and the first compensation through hole is positioned closer to the piston chamber. The compensation hole connects the oil chamber and the piston chamber, and the internal pressure of the system is equal to atmospheric pressure. In the initial state without braking, due to the gap between the brake disc and the brake pads, the caliper piston will be in a retracted state. When the brake lever is squeezed to initiate the braking process, the push rod pushes the piston to move within the piston chamber and compresses the volume within the piston chamber. The piston first seals the compensation hole, isolating the piston chamber from the oil chamber, making the piston chamber a completely sealed pressure chamber. As the piston continues to move forward, compressing the fluid tightly packed in the piston chamber, high pressure is generated. This high pressure is instantly transmitted to the piston at the caliper through the oil pipe connector. Under this high pressure, the caliper piston is pushed out, causing the brake pads to clamp the disc, generating braking force. This is how the force of "squeezing the brake" is converted into the force of "clamping the disc" through the fluid, thus achieving the braking process. As the brake disc gradually wears and thins, the caliper piston needs to be pushed out a longer distance to clamp the disc, meaning more fluid needs to flow from the handbrake section to the caliper section. When the handbrake is released, the piston retracts. At this moment, a slight vacuum effect is generated in the piston chamber. At this time, brake fluid in the oil reservoir is drawn into the piston chamber through the compensation hole, refilling it. This ensures that the next time the brake is squeezed, there is enough fluid to push the piston, compensating for the wear of the brake pads. This makes the brake lever travel feel consistent, preventing it from becoming "soft" or "loose" due to thinner brake pads. The difference in radius between the first compensation through hole and the second compensation through hole makes it easier for brake fluid in the oil reservoir to enter the piston chamber, while it is more difficult or impossible for oil in the piston chamber to enter the oil reservoir, thus ensuring system efficiency.

[0023] It should be understood that this application has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this application. Furthermore, based on the teachings of this application, these features and embodiments can be modified to suit specific circumstances and materials without departing from the spirit and scope of this application. Therefore, this application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this application.

Claims

1. A hydraulic brake device that is easy to assemble, comprising a device body, wherein the device body is provided with a first connecting through hole for fixing the hydraulic brake device, the device body is further provided with an oil reservoir and a piston reservoir, and an oil guide channel communicating with the piston reservoir, the oil guide channel being connected to an insertion cavity, characterized in that: An oil pipe connector is provided inside the insertion cavity, and a compensation hole is provided between the piston chamber and the oil chamber. The brake oil in the oil chamber enters the piston chamber through the compensation hole. The device body is also provided with a second connecting through hole, which is connected to a piston. The piston moves in the piston chamber, changing the pressure in the piston chamber, causing the brake oil to enter the piston chamber from the oil chamber through the compensation hole, or the brake oil in the piston chamber is transported to the oil pipe connector through the oil guide channel. Oil filling holes communicating with the oil chamber are also provided on both sides of the device body.

2. The hydraulic brake device according to claim 1, characterized in that: The oil injection holes on both sides of the device body are symmetrically arranged, and each oil injection hole is provided with internal threads.

3. The hydraulic brake device according to claim 1, characterized in that: The device body is also provided with protruding posts on both sides, and the protruding posts are aligned with the axis of the oil injection hole. A detachable locking component is provided inside the oil injection hole, and a sealing ring is provided between the locking component and the oil injection hole.

4. The hydraulic brake device according to claim 3, characterized in that: The protruding post has a stepped cavity, the radius of which is larger than the radius of the oil injection hole. The end of the locking member is placed inside the stepped cavity, and the radius of the end of the locking member is larger than the radius of the oil injection hole.

5. The hydraulic brake device according to any one of claims 1-4, characterized in that: The oil pipe joint includes an oil pipe inlet and an oil pipe outlet, as well as an oil pipe connecting the oil pipe inlet and the oil pipe outlet, wherein the oil pipe inlet is connected to an oil guide channel.

6. The hydraulic brake device according to claim 5, characterized in that: The oil pipe connector includes a partition, one end of which forms a first connecting part and the other end forms a second connecting part. The insertion cavity is provided with a front end corresponding to the first connecting part and a rear end corresponding to the second connecting part. The front end of the insertion cavity is connected to the oil guide channel. The end of the first connecting part is provided with an oil pipe inlet hole and the end of the second connecting part is provided with an oil pipe outlet hole.

7. The hydraulic brake device according to claim 6, characterized in that: The second connecting part is provided with a first annular groove and a second annular groove, and a partition plate is provided between the first annular groove and the second annular groove. A sealing ring is provided in both the first annular groove and the second annular groove, and the sealing ring forms a seal when the first connecting part enters the front end of the insertion cavity.

8. The hydraulic brake device according to claim 7, characterized in that: The inner diameter of the first and second annular grooves is 1.2 ± 0.02 cm, the width of the partition plate is 0.5-0.9 cm, and the diameter of the sealing ring is 1.1 cm.

9. The hydraulic brake device according to claim 7, characterized in that: The second connecting part is also provided with an assembly groove. The device body is provided with a locking hole and a second gap corresponding to the assembly groove. A locking element is provided in the locking hole. The locking element changes the size of the second gap to fix or loosen the oil pipe connector in the insertion cavity. The end of the first connecting part is provided with multiple sets of cones. The end of the second connecting part is set in a cone shape. The radius of the front end of the insertion cavity is smaller than the radius of the rear end of the insertion cavity. The radius of the second connecting part is slightly smaller than the radius of the front end of the insertion cavity.

10. The hydraulic brake device according to claim 9, characterized in that: One end of the locking hole is provided with a recess, and the end of the locking member is placed in the recess. The radii of the multiple sets of cones change sequentially in the radial direction.

Images