Wire-pulling oil pressure disc brake lower pump structure

Abstract

The utility model discloses a kind of line pull oil pressure disc brake lower pump structure, including frame, handle assembly, main oil cylinder subassembly, adjusting screw, disc brake main body, brake cable, disc, hub and bolt;The disc is fixed on hub, and disc is fixed on frame by bolt;The disc brake main body is also fixed on frame, and the disc brake end of disc brake main body corresponds with the position of disc;Main oil cylinder subassembly is provided on the disc brake main body, and the piston end of main oil cylinder subassembly is connected with handle assembly;Adjusting nut is outwardly extended and arranged on the disc brake main body, and adjusting screw is arranged on adjusting nut, brake cable is arranged on the inner side of frame, and brake cable passes through adjusting screw and is connected with handle assembly.The utility model handle assembly is connected with push rod by pivot, can rotate left and right, can flexibly adapt different brake cable direction, reduce pipe friction, improve compatibility.

Description

Technical Field

[0001] This utility model relates to a disc brake structure, specifically to a cable-operated hydraulic disc brake lower pump structure. Background Technology

[0002] Traditional disc brake systems suffer from two main technical challenges in practical applications: First, the rear-mounted cable design causes frame interference. This design not only complicates the brake cable routing but also leads to friction and interference with other frame components during riding, accelerating cable wear over time. Second, the overall size and weight are excessive. While the traditional two-piece cast caliper structure is reliable in strength, it is too bulky in the current trend of pursuing extreme lightweight bicycle design. Current industry improvements, such as some patented technologies that optimize cable routing, fail to fundamentally solve the problem of the bulky main structure. Other patented split-caliper solutions, while reducing weight to some extent, lack specific designs for handlebar clearance, resulting in numerous inconveniences during actual installation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cable-operated hydraulic disc brake lower pump structure to solve the problems of large size, complex wiring and inconvenient maintenance of traditional disc brakes.

[0004] The structure of the cable-operated hydraulic disc brake lower pump of this utility model is achieved through the following technical solution, including frame, handlebar assembly, master cylinder assembly, adjusting screw, disc brake body, brake cable, disc, hub and bolts; The disc is fixed to the hub and bolted to the frame. The disc brake body is also fixed to the frame, and the disc brake end of the disc brake body corresponds to the position of the disc. The disc brake body is equipped with a master cylinder, and the piston end of the master cylinder is connected to the handlebar. An adjusting nut extends outward from the disc brake body, and an adjusting screw is provided on the adjusting nut. A brake cable is routed on the inner side of the frame, and the brake cable passes through the adjusting screw and is connected to the handlebar.

[0005] As a preferred technical solution, the main body of the disc brake includes a lower cover, locking screw, upper cover, rectangular ring, lower caliper piston, threaded pin, brake pads, and tension spring. The upper cover and the lower cover are spliced ​​together by locking screws, and a disc brake groove is provided between the upper cover and the lower cover. A tension spring plate is provided in the disc brake groove, and a brake pad is fixed on both sides of the tension spring plate. The tension spring plate and the brake pad are fixed in the disc brake groove by threaded pins. Both the upper and lower covers are equipped with a lower weighing piston, which is fixed by a serrated ring, and the piston end of the lower weighing piston is in contact with the brake pads; the disc is placed between the two brake pads.

[0006] As a preferred technical solution, the main cylinder structure includes a hydraulic spring, a piston body, a push rod, a washer, and a C-type retaining ring; The piston body is placed inside the cylinder cavity of the lower cover, and the hydraulic spring is placed at the front end of the piston body and contacts the end of the cylinder cavity; a push rod is connected to the piston body, and a washer and a C-shaped buckle are provided on the push rod; the dust cover is fixed to the front end of the cylinder cavity, thereby realizing the assembly of the main cylinder structure; and a V-ring is provided on the piston body; the cylinder cavity and the lower weighing piston are connected through an oil passage.

[0007] As a preferred technical solution, the handle assembly includes a Torx screw, a handle body, a wire-locking screw, a handle washer, and a pivot. The threaded end of the push rod is connected to the rotating shaft, and the rotating shaft is rotatably mounted on the handle body; the handle body is rotatably mounted on the disc brake body by a Torx screw; the handle body and the brake cable are connected by a cable locking screw and a handle washer.

[0008] As a preferred technical solution, the lower cover is provided with an oil injection hole, which is sealed by an oil injection screw and an oil injection seal, and the oil injection hole is connected to the cylinder cavity.

[0009] As a preferred technical solution, an O-ring is provided at the oil passage connection between the lower cover and the upper cover. The beneficial effects of this utility model are: The handle assembly of this utility model is connected to the push rod via a rotating shaft, and can rotate left and right, which can flexibly adapt to different brake cable routing directions, reduce cable friction, and improve compatibility.

[0010] This utility model features a compact two-piece (upper cover and lower cover) disc brake main structure design, which effectively reduces the overall size and allows it to fit the installation space of more different vehicle models.

[0011] This invention allows for easy adjustment of the tightness of the brake cable by using an adjusting screw and an adjusting nut, enabling fine-tuning of the feel.

[0012] This invention employs a cable-driven hydraulic braking system, combined with internal oil circuit lubrication and a push rod rotation structure, which significantly reduces frictional resistance during operation, ensuring rapid braking response and smooth operation. Tension springs (reset springs) are installed between the brake pads, allowing for rapid return to their original position after braking, preventing dragging of the brakes.

[0013] This utility model sets the brake cable inlet (adjusting screw) on the side of the lower pump body, realizing internal wiring, simplifying the wiring path, and making the overall vehicle wiring more concise and smooth; it integrates the direct control of cable pull and the braking force of hydraulic pressure, with a compact structure and efficient function. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 and Figure 2 This is a schematic diagram of the installation structure of this utility model; Figure 3 This is a schematic diagram of the main structure of the disc brake of this utility model; Figure 4 This is a schematic diagram of the exploded structure of the disc brake body of this utility model; Figure 5 This is a schematic diagram of the disc brake assembly structure of this utility model; Figure 6 This is a schematic diagram of the handle assembly structure of this utility model.

[0016] Explanation of reference numerals in the attached figures

[0017] 100. Frame; 200. Handlebar assembly; 300. Master cylinder assembly; 400. Adjusting screw; 500. Brake cable; 600. Disc; 700. Hub; 800. Bolt; 1. Lubrication screw; 2. Lubrication seal; 3. Adjusting screw; 4. Adjusting nut; 5. Lower cover; 6. Hydraulic spring; 7. Piston body; 8. Push rod; 9. Washer; 10. C-ring; 11. Torx screw; 12. Dust cover; 13. Handlebar body; 14. Cable locking screw; 15. Handlebar washer; 16. Pivot; 17. Steel sleeve; 18. V-ring; 19. Locking screw; 20. Upper cover; 21. Rectangular ring; 22. Lower piston; 23. Threaded pin; 24. Brake pad; 25. Tension spring; 26. O-ring. Detailed Implementation

[0018] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0019] like Figures 1-6As shown, the present invention provides a cable-operated hydraulic disc brake lower pump structure, including a frame 100, a handlebar assembly 200, a master cylinder assembly 300, an adjusting screw 400, a disc brake body, a brake cable 500, a disc 600, a hub 700, and a bolt 800. The disc 600 is fixed to the hub 700 and is fixed to the frame 100 by bolts 800. The disc brake body is also fixed to the frame 100, and the disc brake end of the disc brake body corresponds to the position of the disc 600. The disc brake body is provided with a master cylinder, and the piston end of the master cylinder is connected to the handlebar. An adjusting nut 4 extends outward from the disc brake body, and an adjusting screw 400 is provided on the adjusting nut 4. A brake cable 500 is routed on the inner side of the frame 100, and the brake cable 500 passes through the adjusting screw 400 and is connected to the handlebar.

[0020] The disc brake unit includes a lower cover 5, a locking screw 19, an upper cover 20, a rectangular ring 21, a lower caliper piston 22, a threaded pin 23, a brake pad 24, and a tension spring 25. The upper cover 20 and the lower cover 5 are spliced ​​together by locking screws 19, and a disc brake groove is provided between the upper cover 20 and the lower cover 5. A tension spring plate 25 is provided in the disc brake groove, and a brake pad 24 is fixed on both sides of the tension spring plate 25. The tension spring plate 25 and the brake pad 24 are fixed in the disc brake groove by threaded pins 23. Both the upper cover 20 and the lower cover 5 are provided with a lower weighing piston 22, and the lower weighing piston 22 is fixed by a serrated ring, and the piston end of the lower weighing piston 22 is in contact with the brake pad 24; the disc 600 is placed between the two brake pads 24.

[0021] The main cylinder structure includes a hydraulic spring 6, a piston body 7, a push rod 8, a washer 9, and a C-type retaining ring 10. The piston body 7 is placed inside the cylinder cavity of the lower cover 5, and the hydraulic spring 6 is placed at the front end of the piston body 7 and contacts the end of the cylinder cavity; a push rod 8 is connected to the piston body 7, and a washer 9 and a C-shaped buckle 10 are provided on the push rod 8; the dust cover 12 is fixed to the front end of the cylinder cavity, thereby realizing the assembly of the main cylinder structure; and a V-ring 18 is provided on the piston body 7; the cylinder cavity and the lower weighing piston 22 are connected through an oil passage.

[0022] The handle assembly 200 includes a Torx screw 11, a handle body 13, a wire locking screw 14, a handle washer 15, and a pivot 16. The threaded end of the push rod 8 is connected to the rotating shaft 16 and the rotating shaft 16 is rotatably mounted on the handle body 13; the handle body 13 is rotatably mounted on the disc brake body by a Torx screw 11; the handle body 13 and the brake cable 500 are connected by a cable locking screw 14 and a handle washer 15.

[0023] The lower cover 5 is provided with an oil injection hole, which is sealed by an oil injection screw 1 and an oil injection seal 2, and the oil injection hole is connected to the cylinder cavity.

[0024] To prevent oil leakage, in this embodiment, an O-ring 26 is provided at the oil connection between the lower cover 5 and the upper cover 20.

[0025] The handle of this utility model is fixed to the push rod by a rotating shaft and can rotate left and right to adapt to different wiring directions and reduce friction; the outer wall is fitted with a dust cover to prevent dust from entering. The brake cable adjusting screw of this utility model, together with the adjusting nut, can adjust the tightness of the brake cable; the brake cable is fixed to the handle by the locking screw and the handle washer, and the outer wall is provided with a brake cable dust cover for protection; The present invention features a reset spring between the brake pads, which is fixed by a pin screw to achieve rapid rebound after braking; the cylinder is filled with grease to reduce the resistance of the brake cable movement.

[0026] In addition, the two-piece brake body design of this utility model reduces the size and is compatible with the installation of brake pads for various vehicle models; Because the brake cable is located on the side of the inner cylinder, the cable routing path is simplified and the smoothness is improved; This invention reduces frictional resistance through a push rod rotation structure and grease lubrication, and, in conjunction with brake cable adjustment, ensures braking response speed and smoothness.

[0027] The main body of this utility model includes a brake body, brake pads, a brake disc, a handle, and a push rod. Brake pads are provided at both ends of the inner wall of the brake body, and the brake disc is held in the middle; a brake cable adjustment screw is provided on the left side of the front end, and the handle is connected to the rotating shaft on the upper side through the push rod. The handle can rotate around the push rod. When pressed, it drives the push rod into the oil cylinder, thereby realizing hydraulic braking.

[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A cable-operated hydraulic disc brake lower pump structure, characterized in that, Includes frame (100), handlebar assembly (200), master cylinder assembly (300), adjusting screw (400), disc brake body, brake cable (500), disc (600), hub (700) and bolt (800); The disc (600) is fixed to the hub (700), and the disc (600) is fixed to the frame (100) by bolts (800); the disc brake body is also fixed to the frame (100), and the disc brake end of the disc brake body corresponds to the position of the disc (600); the disc brake body is provided with a master cylinder assembly, and the piston end of the master cylinder assembly is connected to the handlebar assembly; an adjusting nut (4) is provided extending outward on the disc brake body, and an adjusting screw (400) is provided on the adjusting nut (4); a brake cable (500) is provided on the inner side of the frame (100), and the brake cable (500) passes through the adjusting screw (400) and is connected to the handlebar assembly.

2. The cable-operated hydraulic disc brake lower pump structure according to claim 1, characterized in that: The disc brake body includes a lower cover (5), a locking screw (19), an upper cover (20), a rectangular ring (21), a lower caliper piston (22), a threaded pin (23), a brake pad (24), and a tension spring (25); The upper cover (20) and the lower cover (5) are spliced ​​together by locking screws (19), and a disc brake groove is provided between the upper cover (20) and the lower cover (5). A tension spring plate (25) is provided in the disc brake groove, and a brake pad (24) is fixed on both sides of the tension spring plate (25). The tension spring plate (25) and the brake pad (24) are fixed in the disc brake groove by threaded pins (23). Both the upper cover (20) and the lower cover (5) are provided with a lower pressure piston (22), and the lower pressure piston (22) is fixed by a serrated ring, and the piston end of the lower pressure piston (22) is in contact with the brake pad (24); the disc (600) is placed between the two brake pads (24).

3. The cable-operated hydraulic disc brake lower pump structure according to claim 1, characterized in that: The main cylinder structure includes a hydraulic spring (6), a piston body (7), a push rod (8), a washer (9), and a C-type retaining ring (10); The piston body (7) is placed in the cylinder cavity of the lower cover (5), and the hydraulic spring (6) is placed at the front end of the piston body (7) and contacts the end of the cylinder cavity; a push rod (8) is connected to the piston body (7), and a washer (9) and a C-shaped buckle (10) are provided on the push rod (8); the dust cover (12) is fixed to the front end of the cylinder cavity, thereby realizing the assembly of the main cylinder structure; and a V-ring (18) is provided on the piston body (7); the cylinder cavity is connected to the lower large piston (22) through an oil passage.

4. The cable-operated hydraulic disc brake lower pump structure according to claim 1, characterized in that: The handle assembly (200) includes a Torx screw (11), a handle body (13), a wire locking screw (14), a handle washer (15), and a pivot (16); The threaded end of the push rod (8) is connected to the rotating shaft (16), and the rotating shaft (16) is rotatably mounted on the handle body (13); the handle body (13) is rotatably mounted on the disc brake body by a Torx screw (11); the handle body (13) and the brake cable (500) are connected by a cable locking screw (14) and a handle washer (15).

5. The cable-operated hydraulic disc brake lower pump structure according to claim 1, characterized in that: The lower cover (5) is provided with an oil injection hole, and the oil injection hole is sealed by an oil injection screw (1) and an oil injection seal (2), and the oil injection hole is connected to the cylinder cavity.

6. The cable-operated hydraulic disc brake lower pump structure according to claim 1, characterized in that: An O-ring (26) is provided at the oil passage connection between the lower cover (5) and the upper cover (20).

Images