Highly sensitive and stable hydraulic brake system

Abstract

The present application relates to a high-sensitivity and high-stability hydraulic brake system, including a mounting portion and two clamping portions, an adjustment mechanism including an adjustment box and a master oil cylinder, a first oil cylinder, a second oil cylinder, a gear, and two racks arranged in the adjustment box; the gear is rotatably connected in the adjustment box, the racks are close to each other and mesh with the gear on one side, the first oil cylinder and the second oil cylinder are located at both ends of the length direction of the two racks, the piston ends of the first oil cylinder and the second oil cylinder are connected to the end of a rack one by one; the oil pipes of the first oil cylinder and the second oil cylinder are connected to an oil passage one by one. The present application adopts the method of controlling the simultaneous sliding of the two racks to ensure that the two hydraulic rods are ejected at the same time; the two sides of the brake disc are clamped to make the brake stable; and only the piston shaft of the master oil cylinder needs to be driven to eject without driving a large amount of oil, so that the brake handle does not need to be pressed significantly, making the brake sensitive.

Description

Technical Field

[0001] The present application relates to the field of brake devices, and in particular to a high-sensitivity and high-stability hydraulic brake system. Background Art

[0002] Hydraulic brake calipers are usually used for braking electric vehicles. The hydraulic brake device used in motorcycles or bicycles should be regarded as one of the most commonly used hydraulic devices. It is mainly equipped with a brake controller driven by the brake handle at the grip, and is connected to the hydraulic brake caliper at the wheel through a hydraulic pipeline. The hydraulic brake caliper is used to clamp the brake disc to brake. The hydraulic brake caliper includes a mounting part, on which two clamping parts are arranged, and a hydraulic chamber and a hydraulic rod are arranged on the mounting part. After the hydraulic chamber is filled with liquid, the hydraulic rod is pushed out, and the outer end of the hydraulic rod drives the clamping part to move. In order to make the brake caliper stably clamp the brake disc, the two clamping parts move close to each other to clamp the brake disc in the middle, and the two sides of the brake disc are braked at the same time, so that the braking is rapid and stable. However, in order to drive the two clamping parts to move synchronously, two sets of hydraulic chambers and hydraulic rods are arranged in the mounting part to correspond to one clamping part one by one.

[0003] However, in actual use, it was found that due to the setting of the two chambers, the amount of oil required to fill the chambers increased, and squeezing the brake handle on the electric vehicle handle required a larger amount of drive, reducing the sensitivity of the brakes. Summary of the invention

[0004] In order to improve the problem that the brake handle requires a relatively large drive, the present application provides a high-sensitivity and high-stability hydraulic brake system.

[0005] The present application provides a high-sensitivity and high-stability hydraulic brake system, which adopts the following technical solutions: A high-sensitivity and high-stability hydraulic brake system comprises a mounting part and two clamping parts, wherein the mounting part is provided with a receiving groove for receiving a brake disc, and the two clamping parts are slidably arranged on the mounting part, and the two clamping parts are located on both sides of the brake disc; hydraulic cavities are provided on opposite sides of the receiving groove, and a hydraulic shaft is slidably arranged in the hydraulic cavity, and the hydraulic shaft fixes the clamping part toward the end of the receiving groove, and an oil passage connecting the hydraulic cavity to the mounting part is provided on the mounting part, and also comprises an adjusting mechanism, and the adjusting mechanism comprises an adjusting box and a main oil cylinder, a first oil cylinder, a second oil cylinder, a gear, and two racks arranged in the adjusting box; The gear is rotatably connected in the regulating box, the two racks are arranged in parallel, the racks are close to each other and mesh with the gear on one side, the first oil cylinder and the second oil cylinder are located at the two ends of the length direction of the two racks, and the piston ends of the first oil cylinder and the second oil cylinder are connected to the end of a rack one by one; the oil pipes of the first oil cylinder and the second oil cylinder are connected to an oil passage one by one; The piston shaft of the master cylinder is connected to the end of the rack away from the first cylinder. The piston shaft of the master cylinder is driven to slide by the brake handle. The piston shaft of the master cylinder drives the rack connected to the first cylinder to slide and drive the gear to rotate, so that the piston shafts of the first cylinder and the second cylinder contract, allowing the oil in the first cylinder and the second cylinder to enter the hydraulic chamber.

[0006] By adopting the above technical solution, after the brake handle is squeezed, the piston shaft of the master cylinder is pushed out, the rack connected to the first cylinder is slid, the piston shaft of the first cylinder is retracted, the oil in the first cylinder is pressed into one of the hydraulic chambers, the piston rod in the hydraulic chamber is pushed out, and one of the clamping parts is pushed out and clamps the brake disc. At the same time, after the rack connected to the first cylinder slides, the gear is driven to rotate, the rack connected to the second cylinder is slid, the piston shaft of the second cylinder is pressed in, and the oil in the second cylinder is pressed into another hydraulic chamber, ensuring that the two hydraulic rods are pushed out at the same time, and the two sides of the brake disc are clamped at the same time, so that the brake is stable; and it is only necessary to drive the piston shaft of the master cylinder to push out, without the need for a large amount of oil to drive, so that the brake handle does not need to be pressed significantly, so that the brake is sensitive. The brake handle is connected to a torsion spring at the hinge of the handle to reset the brake handle and reset the master cylinder, and at the same time drive the two racks to move, so that the first cylinder and the second cylinder are reset, so that the two hydraulic rods are simultaneously retracted into the hydraulic chamber, and the two clamping parts are reset at the same time.

[0007] Optionally, a mounting seat for installing the master cylinder is provided at one end of the regulating box, and a mounting groove for accommodating the master cylinder is provided on the mounting seat, the inner wall of the mounting groove fits the outer wall of the master cylinder, and the mounting seat is also provided with a main pipe hole for the master cylinder oil pipe to extend out.

[0008] By adopting the above technical solution, the installation groove facilitates the installation of the master cylinder and realizes the positioning of the master cylinder at the same time.

[0009] Optionally, the regulating box includes a box body and a cover body, and a connecting pipe hole is opened on the side wall of the box body for the oil pipes of the first oil cylinder and the second oil cylinder to extend out, and the connecting pipe hole passes through the side wall of the box body toward the opening direction of the box body.

[0010] By adopting the above technical solution, the connecting pipe hole is set through the side wall of the box body towards the box opening direction, so that the oil pipes of the first oil cylinder and the second oil cylinder can be put into an integrated manner and adjusted inward, which is convenient for the installation of the first oil cylinder and the second oil cylinder.

[0011] Optionally, a Hall sensor is provided in the adjustment box, a magnet cooperating with the Hall sensor is provided on the rack, the electrical signal of the Hall sensor is connected to the electric vehicle instrument, when the magnet is facing the Hall sensor, the electric vehicle is in a normal driving state, and the electrical signal of the electric vehicle instrument is connected to the brake light.

[0012] By adopting the above technical solution, it is convenient to monitor the braking status, thereby controlling the lighting and shutting of the brake light. When the magnet is facing the Hall sensor, the brake light is turned off, and when the magnet is separated from the Hall sensor, the brake light is turned on.

[0013] Optionally, the oil passage includes two sub-oil passages, and the sub-oil passages are connected to the left and right sides of the hydraulic chamber.

[0014] By adopting the above technical solution, the oil can enter the hydraulic cavity more evenly, the hydraulic rod can slide stably, and the seal of the hydraulic rod is not easily damaged by squeezing, thereby extending the service life of the brake system.

[0015] Optionally, the clamping portion includes a fixing plate and a plurality of bosses distributed on the fixing plate, and the bosses are used to contact the brake disc.

[0016] By adopting the above technical solution and setting the convex column, the clamping part can maintain a good high friction force, improve the braking effect, and at the same time it is not easy to be worn smooth by the brake disc, thereby extending the service life of the brake system.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. The two racks are controlled to slide at the same time, which ensures that the two hydraulic rods are ejected at the same time; the brake disc is clamped on both sides to make the brake stable; and only the piston shaft of the master cylinder needs to be driven to eject without a large amount of oil, so that the brake handle does not need to be pressed significantly, making the brake sensitive; 2. The installation groove, main pipe hole and connecting pipe hole are set to facilitate the installation of the main cylinder, the first cylinder and the second cylinder; 3. The electrical signal of the Hall sensor is connected to the instrument to facilitate the control of the brake light on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a diagram showing the overall structure of the mounting portion and two clamping portions of the embodiment.

[0019] Figure 2 It is a display diagram of the hydraulic cavity and the hydraulic shaft in the mounting portion of the embodiment.

[0020] Figure 3 The structure of the regulating box of the embodiment is shown in FIG. Figure 1 .

[0021] Figure 4 It is a structural illustration of a connection port on the outside of the mounting portion of the embodiment for connecting the sub-oil channel of the first oil cylinder and the oil pipe of the second oil cylinder.

[0022] Figure 5 The structure of the regulating box of the embodiment is shown in FIG. Figure 2 , also showing magnets and Hall sensors.

[0023] Explanation of the reference numerals: 1. Mounting portion; 11. Receiving groove; 12. Hydraulic chamber; 13. Hydraulic shaft; 14. Oil passage; 2. Clamping portion; 21. Fixing plate; 22. Boss; 3. Adjusting box; 31. Box body; 311. Connecting pipe hole; 32. Cover body; 33. Mounting seat; 331. Mounting groove; 332. Main pipe hole; 4. Main oil cylinder; 5. First oil cylinder; 6. Second oil cylinder; 7. Gear; 8. Rack; 9. Hall sensor; 91. Magnet. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] The embodiment of the present application discloses a high-sensitivity and high-stability hydraulic brake system. Figure 1 The high-sensitivity and high-stability hydraulic brake system comprises a mounting portion 1 and two clamping portions 2. The mounting portion 1 is provided with a receiving groove 11 for receiving a brake disc, and the two clamping portions 2 are slidably arranged on the mounting portion 1, and the two clamping portions 2 are located on both sides of the receiving groove 11.

[0026] Reference Figure 1 , Figure 2 Hydraulic chambers 12 are provided on opposite sides of the accommodating groove 11, and a hydraulic shaft 13 is slidably connected in the hydraulic chamber 12. The circumferential outer wall of the hydraulic shaft 13 is slidably connected to the inner wall of the hydraulic chamber 12 through a double-layer sealing ring. The hydraulic shaft 13 slides along its axial direction, and the hydraulic shaft 13 slides away from or close to the accommodating groove 11.

[0027] Reference Figure 1 , Figure 2 The hydraulic shaft 13 is fixed to the end of the receiving groove 11 to fix the clamping part 2. The clamping part 2 includes a fixing plate 21 and a plurality of bosses 22 distributed on the fixing plate 21. The bosses 22 are integrally formed on the side of the fixing plate 21 away from the hydraulic shaft 13, and the bosses 22 are used to contact the brake disc.

[0028] Reference Figure 2 An oil passage 14 connected to the hydraulic chamber 12 is provided on the mounting portion 1. One oil passage 14 includes two sub-oil passages, and the sub-oil passages connect the left and right sides of the same hydraulic chamber 12 so that the liquid flows into the hydraulic chamber 12 evenly.

[0029] Reference Figure 3 The high-sensitivity and high-stability hydraulic brake system also includes an adjusting mechanism, which includes an adjusting box 3 and a main oil cylinder 4, a first oil cylinder 5, a second oil cylinder 6, a gear 7, and two racks 8 arranged in the adjusting box 3.

[0030] Reference Figure 3The regulating box 3 includes a box body 31 and a cover body 32 fixed to the box body 31 by screws. The box body 31 is provided with an opening at the top, and the cover body 32 closes the opening at the top of the box body 31. The gear 7 is rotatably connected to the box body 31 through a connecting shaft, and the axis of the gear 7 is in the vertical direction. The two racks 8 are arranged horizontally and parallel to each other, and the racks 8 are close to each other on one side and mesh with the opposite ends of the gear 7. The first oil cylinder 5 and the second oil cylinder 6 are located at the two ends of the length direction of the two racks 8, and the piston ends of the first oil cylinder 5 and the second oil cylinder 6 are fixed to the end of a rack 8 in a one-to-one correspondence.

[0031] Reference Figure 3 , Figure 4 The oil pipes of the first oil cylinder 5 and the second oil cylinder 6 are connected to an oil passage 14 one by one, and the oil pipes of the first oil cylinder 5 and the second oil cylinder 6 are branched into two branches corresponding to the same oil passage 14. The side wall of the box body 31 is provided with a connecting pipe hole 311 for the oil pipes of the first oil cylinder 5 and the second oil cylinder 6 to extend out, and the connecting pipe hole 311 penetrates the side wall of the box body 31 toward the opening direction of the box body 31, so that the first oil cylinder 5 and the second oil cylinder 6 and their oil pipes can be installed into the box body 31 as a whole.

[0032] Reference Figure 1 , Figure 2 , Figure 3 The piston shaft of the master cylinder 4 is connected to the rack 8 and is away from the end of the first cylinder 5. The piston shaft of the master cylinder 4 is driven by the brake handle to slide. The piston shaft of the master cylinder 4 drives the rack 8 connected to the first cylinder 5 to slide and drive the gear 7 to rotate, so that the piston shafts of the first cylinder 5 and the second cylinder 6 shrink at the same time, so that the oil in the first cylinder 5 and the second cylinder 6 enters the hydraulic chamber 12.

[0033] Reference Figure 3 , Figure 5 A mounting seat 33 for mounting the master cylinder 4 is integrally formed at one horizontal end of the box body 31. A mounting groove 331 for accommodating the master cylinder 4 is provided on the side of the mounting seat 33 facing the inner cavity of the box body 31. The inner wall of the mounting groove 331 fits the outer wall of the master cylinder 4. A main pipe hole 332 for the oil pipe of the master cylinder 4 to extend out is also provided at the end of the mounting seat 33 away from the inner cavity of the box body 31, which facilitates the installation of the master cylinder 4.

[0034] Reference Figure 5 A Hall sensor 9 is fixed to the inner side wall of the rack 8 connected to the first oil cylinder 5 near the box body 31, and a magnet 91 for cooperating with the Hall sensor 9 is fixed on the rack 8. The electrical signal of the Hall sensor 9 is connected to the electric vehicle instrument. When the magnet 91 is facing the Hall sensor 9, the electric vehicle is in a normal driving state. When the magnet 91 is separated from the Hall sensor 9, the electric vehicle is in a braking state. The electrical signal of the electric vehicle instrument is connected to the brake light, which is convenient for controlling the brake light to light up when braking.

[0035] The implementation principle of a high-sensitivity and high-stability hydraulic brake system of the present application embodiment is as follows: when the brake handle is squeezed, the piston shaft of the master cylinder 4 is pushed out, the rack 8 connected to the first cylinder 5 is slid, the piston shaft of the first cylinder 5 is retracted, and the oil in the first cylinder 5 is pressed into one of the hydraulic chambers 12, and the piston rod in the hydraulic chamber 12 is pushed out, so that one of the clamping parts 2 is pushed out and clamps the brake disc. At the same time, after the rack 8 connected to the first cylinder 5 slides, the gear 7 is driven to rotate, so that the rack 8 connected to the second cylinder 6 slides, and the piston shaft of the second cylinder 6 is pressed in, so that the oil in the second cylinder 6 is pressed into another hydraulic chamber 12, so that the two sides of the brake disc are clamped. The brake handle is connected to a torsion spring at the hinge of the handle to reset the brake handle, reset the master cylinder 4, and at the same time drive the two racks 8 to move, so that the first cylinder 5 and the second cylinder 6 are reset, so that the two hydraulic rods are simultaneously retracted into the hydraulic chamber 12, so that the two clamping parts 2 are simultaneously reset and then separated from the brake disc.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-sensitivity and high-stability hydraulic brake system, comprising a mounting portion (1) and two clamping portions (2), wherein the mounting portion (1) is provided with a receiving groove (11) for receiving a brake disc, the two clamping portions (2) are slidably arranged on the mounting portion (1), and the two clamping portions (2) are located on both sides of the brake disc; hydraulic cavities (12) are provided on opposite sides of the receiving groove (11), a hydraulic shaft (13) is slidably arranged in the hydraulic cavity (12), the hydraulic shaft (13) fixes the clamping portion (2) toward the end of the receiving groove (11), and an oil passage (14) is provided on the mounting portion (1) to communicate with the hydraulic cavity (12), characterized in that: It also includes an adjustment mechanism, which includes an adjustment box (3) and a main oil cylinder (4), a first oil cylinder (5), a second oil cylinder (6), a gear (7), and two racks (8) arranged in the adjustment box (3); The gear (7) is rotatably connected in the regulating box (3); the two racks (8) are arranged in parallel; the racks (8) are close to each other and mesh with the gear (7); the first oil cylinder (5) and the second oil cylinder (6) are located at two ends of the two racks (8) in the length direction; the piston ends of the first oil cylinder (5) and the second oil cylinder (6) are connected to the end of a rack (8) in a one-to-one correspondence; the oil pipes of the first oil cylinder (5) and the second oil cylinder (6) are connected to an oil passage (14) in a one-to-one correspondence; The piston shaft of the master cylinder (4) is connected to the end of the rack (8) away from the first cylinder (5). The piston shaft of the master cylinder (4) is driven by the brake handle to slide. The piston shaft of the master cylinder (4) drives the rack (8) connected to the first cylinder (5) to slide, driving the gear (7) to rotate, so that the piston shafts of the first cylinder (5) and the second cylinder (6) contract, so that the oil in the first cylinder (5) and the second cylinder (6) enters the hydraulic chamber (12).

2. The high-sensitivity and high-stability hydraulic brake system according to claim 1 is characterized in that: A mounting seat (33) for mounting the master oil cylinder (4) is provided at one end of the regulating box (3); a mounting groove (331) for accommodating the master oil cylinder (4) is provided on the mounting seat (33); an inner wall of the mounting groove (331) fits the outer wall of the master oil cylinder (4); and a main pipe hole (332) for the oil pipe of the master oil cylinder (4) to extend is also provided on the mounting seat (33).

3. The high-sensitivity and high-stability hydraulic brake system according to claim 1, characterized in that: The regulating box (3) comprises a box body (31) and a cover body (32); a connecting pipe hole (311) is provided on a side wall of the box body (31) for the oil pipes of the first oil cylinder (5) and the second oil cylinder (6) to extend out; the connecting pipe hole (311) penetrates the side wall of the box body (31) in the direction of the opening of the box body (31).

4. The high-sensitivity, high-stability hydraulic brake system according to claim 1, characterized in that: A Hall sensor (9) is arranged in the regulating box (3), a magnet (91) cooperating with the Hall sensor (9) is arranged on the rack (8), an electrical signal of the Hall sensor (9) is connected to an electric vehicle instrument, when the magnet (91) faces the Hall sensor (9), the electric vehicle is in a normal driving state, and an electrical signal of the electric vehicle instrument is connected to a brake light.

5. The high-sensitivity and high-stability hydraulic brake system according to claim 1, characterized in that: The oil passage (14) comprises two sub-oil passages, and the sub-oil passages are connected to the left and right sides of the hydraulic chamber (12).

6. The high-sensitivity and high-stability hydraulic brake system according to claim 1, characterized in that: The clamping portion (2) comprises a fixing plate (21) and a plurality of bosses (22) distributed on the fixing plate (21), wherein the bosses (22) are used to contact the brake disc.

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