Rapidly-assembled anti-loosening bicycle oil pressure disc brake

Abstract

A quick-assembly anti-loose bicycle oil pressure disc brake relates to the technical field of brake handles and comprises an oil pressure handle body, a brake handle is hinged to the oil pressure handle body, a holding distance adjusting bolt abutting against a piston of the oil pressure handle body is in threaded connection with the brake handle, and a brake idle stroke adjusting bolt abutting against a protection plate assembly is further in threaded connection with the brake handle. A plurality of holding distance positioning grooves extending in the axial direction are formed in the holding distance adjusting bolt in the circumferential direction in a surrounding mode, a holding distance spring ejector pin is connected to the brake handle, and the telescopic end of the holding distance spring ejector pin abuts against the holding distance positioning grooves. The oil pressure grip solves the problems that when an oil pressure grip in the prior art is used and a bicycle runs on a bumpy road surface, a screw rod for adjusting the brake grip distance and a screw rod for adjusting the brake idle stroke are prone to loosening, so that a rider cannot brake accurately, and safety accidents are prone to being caused; and when an existing protection plate used for supporting and adjusting a brake idle stroke screw rod is disassembled, a brake cable assembly needs to be disassembled, so that the operation is tedious, and time and labor are wasted.

Description

Technical Field

[0001] This utility model relates to the field of brake lever technology, specifically to a quick-release anti-loosening type hydraulic disc brake for bicycles. Background Technology

[0002] Hydraulic disc brakes are mainly used on bicycles, electric bicycles, and scooters. A hydraulic disc brake consists of a hydraulic grip, brake lever, brake lines, calipers, brake pads, and a disc. During braking, the rider applies force to the brake lever. The push rod on the brake lever compresses the piston in the hydraulic grip, which in turn compresses the brake fluid in the grip. The brake fluid transmits the force through the brake lines to the piston on the caliper, pushing the brake pads against the disc. The friction between the brake pads and the disc generates braking force.

[0003] A prior art patent, CN221457891U, discloses a solution including a fixed hydraulic grip with a brake lever hinged to it. One end of the brake lever has an adjustment component that allows for quick adjustment of the bicycle's braking effect. By cooperating with brake pads of different thicknesses, the adjustment component allows for adjustment of the brake grip distance according to the user's habits. The adjustment component includes a connecting block fixed to the end of the brake lever, with an adjusting bolt threaded through the top of the connecting block. This solution solves the problem of weakened braking effect caused by continuous friction between the brake pads and the disc in existing bicycle hydraulic disc brakes during daily use; and the issue that fixed brake grip distances lead to poor user experience for some users due to differences in hand size.

[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0005] First, with existing hydraulic grips, when the bicycle is traveling on bumpy roads, the screws for adjusting the brake lever distance and the brake travel can easily become loose. This makes it difficult for the rider to brake accurately, which can easily lead to safety accidents.

[0006] Secondly, the existing protective plate used to support the brake free travel screw requires the brake cable assembly to be disassembled during installation and removal, which makes the operation cumbersome, time-consuming and labor-intensive.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a quick-install anti-loosening hydraulic disc brake for bicycles. This solves the problem that in traditional hydraulic grips, the screws adjusting the brake grip distance and the brake travel adjustment screws are prone to loosening when the bicycle is traveling on bumpy roads. This prevents the rider from accurately braking, potentially leading to accidents. Furthermore, the existing protective plate supporting the brake travel adjustment screw requires disassembling the brake cable assembly during installation and removal, resulting in cumbersome, time-consuming, and labor-intensive operation.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A quick-release anti-loosening bicycle hydraulic disc brake includes a hydraulic handlebar body, a brake lever hinged to the hydraulic handlebar body, a grip distance adjustment bolt threaded onto the brake lever that abuts against the piston of the hydraulic handlebar body, and a brake travel adjustment bolt threaded onto the brake lever that abuts against the protective plate assembly.

[0011] The grip distance adjusting bolt is provided with a plurality of grip distance positioning grooves extending axially along the circumferential direction, and a grip distance spring pin is connected to the brake lever, the telescopic end of the grip distance spring pin abutting against the grip distance positioning groove.

[0012] The brake free travel adjusting bolt is provided with a plurality of free travel positioning grooves extending axially in the circumferential direction, and a free travel spring pin is connected to the brake lever, the telescopic end of the free travel spring pin abutting against the free travel positioning groove.

[0013] As an optimized solution, the protective plate assembly includes two rings arranged in a semi-circular annular joint, with a protective plate fixed to the outer wall of one of the rings, which abuts against the brake free travel adjusting bolt.

[0014] As an optimized solution, two fixing holes are provided side by side on the outer ring body, and a fixing bolt is inserted into each fixing hole. A threaded groove is provided on the mating surface of the other ring body to be threadedly connected to the fixing bolt.

[0015] As an optimized solution, the brake lever is provided with threaded holes corresponding to the grip distance spring pin and the idle stroke spring pin, and the outer shell of the grip distance spring pin and the idle stroke spring pin is provided with external threads that match the threaded holes.

[0016] As an optimized solution, the end of the grip adjustment bolt that abuts against the piston of the hydraulic handle body is hemispherical.

[0017] As an optimized solution, the grip positioning groove and the idle stroke positioning groove are arranged in an arc shape along the axial section direction.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By providing several axially extending grip positioning grooves around the grip adjustment bolt in the circumferential direction, and having the telescopic end of the grip spring pin abut against the grip positioning groove, the circumferential rotation of the grip adjustment bolt is limited under normal conditions, preventing the nut from self-rotating and loosening when it is bumpy.

[0020] By providing several axially extending idle travel positioning grooves around the brake idle travel adjusting bolt in the circumferential direction, and having the telescopic end of the idle travel spring pin abut against the idle travel positioning groove, the circumferential rotation of the brake idle travel adjusting bolt is limited under normal conditions, preventing the nut from self-rotating and loosening during bumpy conditions; this ensures the accuracy of adjustment and guarantees the user's operational safety.

[0021] The protective plate assembly includes two semi-circular rings that are joined together. This allows for easy assembly and disassembly by simply joining and separating the two semi-circular rings, eliminating the need for drilling into the brake cable assembly. This makes the protective plate assembly easy, quick, and saves time and effort. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0025] In the diagram: 1-Hydraulic lever body; 2-Brake lever; 3-Grip distance adjustment bolt; 4-Brake free travel adjustment bolt; 5-Ring body; 6-Protective plate; 7-Fixing hole; 8-Grip distance positioning groove; 9-Free travel positioning groove; 10-Piston; 11-Grip distance spring pin; 12-Threaded hole; 13-Free travel spring pin. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] like Figure 1 and Figure 2As shown, the quick-release anti-loosening bicycle hydraulic disc brake includes a hydraulic lever body 1, a brake lever 2 hinged to the hydraulic lever body 1, a grip distance adjustment bolt 3 threadedly connected to the brake lever 2 that abuts against the piston 10 of the hydraulic lever body 1, and a brake free travel adjustment bolt 4 threadedly connected to the brake lever 2 that abuts against the protective plate 6 assembly.

[0028] The grip adjustment bolt 3 is provided with several grip positioning grooves 8 extending axially around its circumference. The brake lever 2 is connected to a grip spring pin 11, and the telescopic end of the grip spring pin 11 abuts against the grip positioning grooves 8.

[0029] The brake free travel adjusting bolt 4 is provided with several free travel positioning grooves 9 extending axially in the circumferential direction. The brake lever 2 is connected to a free travel spring pin 13, and the telescopic end of the free travel spring pin 13 abuts against the free travel positioning groove 9.

[0030] The protective plate 6 assembly includes two rings 5 ​​arranged in a semi-circular annular joint, with a protective plate 6 fixed to the outer wall of one of the rings 5, which abuts against the brake free travel adjustment bolt 4.

[0031] Two fixing holes 7 are provided side by side on the outer ring 5, and a fixing bolt is inserted into each fixing hole 7. A threaded groove is provided on the mating surface of the other ring 5 to be threadedly connected to the fixing bolt.

[0032] The brake lever 2 has threaded holes 12 corresponding to the grip spring pin 11 and the idle stroke spring pin 13. The outer shells of the grip spring pin 11 and the idle stroke spring pin 13 are provided with external threads that match the threaded holes 12, so as to fix the spring pins.

[0033] The end of the grip adjustment bolt 3 that abuts against the piston 10 of the hydraulic handle body 1 is hemispherical, thereby reducing wear on the piston 10.

[0034] The grip positioning groove 8 and the idle stroke positioning groove 9 are arranged in an arc shape along the axial section direction. This allows the spring pin to prevent the bolt from rotating, while the bolt can be manually rotated. The arc-shaped positioning groove can then be used to break the spring pin and allow for active adjustment of the bolt.

[0035] The other structures of this device are the same as those in the prior art, and since they are not innovative aspects of this solution, they will not be described in detail here.

[0036] The working principle of this device is as follows:

[0037] By providing several axially extending grip positioning grooves 8 around the grip adjustment bolt 3 in the circumferential direction, and having the telescopic end of the grip spring pin 11 abut against the grip positioning grooves 8, the circumferential rotation of the grip adjustment bolt 3 is limited under normal conditions, preventing the nut from rotating on its own during bumpy conditions and causing it to loosen.

[0038] By providing several axially extending idle stroke positioning grooves 9 around the brake idle stroke adjusting bolt 4 in the circumferential direction, and having the telescopic end of the idle stroke spring pin 13 abut against the idle stroke positioning grooves 9, the circumferential rotation of the brake idle stroke adjusting bolt 4 is limited under normal conditions, preventing the nut from self-rotating and loosening when bumpy; this ensures the accuracy of adjustment and the safety of the user's operation.

[0039] The protective plate 6 assembly includes two semi-circular rings 5 ​​that are joined together. This allows for easy assembly and disassembly by simply joining and separating the two semi-circular rings 5, eliminating the need for drilling into the brake cable assembly. This makes the protective plate 6 assembly and disassembly convenient, quick, and time-saving.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A quick-release anti-loosening type bicycle hydraulic disc brake, comprising a hydraulic handlebar body (1), a brake lever (2) hinged to the hydraulic handlebar body (1), a grip adjustment bolt (3) threaded onto the brake lever (2) abutting against the piston (10) of the hydraulic handlebar body (1), and a brake travel adjustment bolt (4) threaded onto the brake lever (2) abutting against a protective plate (6) assembly; characterized in that: The grip adjustment bolt (3) is provided with a plurality of grip positioning grooves (8) extending axially along the circumferential direction. The brake lever (2) is connected to a grip spring pin (11). The telescopic end of the grip spring pin (11) abuts against the grip positioning groove (8). The brake free travel adjusting bolt (4) is provided with several free travel positioning grooves (9) extending axially in the circumferential direction. The brake lever (2) is connected with a free travel spring pin (13). The telescopic end of the free travel spring pin (13) abuts against the free travel positioning groove (9).

2. The quick-release anti-loosening hydraulic disc brake for bicycles according to claim 1, characterized in that: The protective plate (6) assembly includes two rings (5) arranged in a semi-circular annular joint, and a protective plate (6) that abuts against the brake free travel adjusting bolt (4) is fixed on the outer wall of one of the rings (5).

3. The quick-release anti-loosening hydraulic disc brake for bicycles according to claim 2, characterized in that: Two fixing holes (7) are provided side by side on the outer ring (5), and a fixing bolt is inserted into each fixing hole (7). A threaded groove is provided on the mating surface of the other ring (5) to be threadedly connected to the fixing bolt.

4. The quick-release anti-loosening hydraulic disc brake for bicycles according to claim 1, characterized in that: The brake lever (2) has threaded holes (12) respectively corresponding to the grip spring pin (11) and the idle stroke spring pin (13). The outer shells of the grip spring pin (11) and the idle stroke spring pin (13) are provided with external threads that match the threaded holes (12).

5. The quick-release anti-loosening hydraulic disc brake for bicycles according to claim 1, characterized in that: The end of the grip adjustment bolt (3) that abuts against the piston (10) of the hydraulic handle body (1) is hemispherical.

6. The quick-release anti-loosening hydraulic disc brake for bicycles according to claim 1, characterized in that: The grip positioning groove (8) abuts against each other and the empty stroke positioning groove (9) is arranged in an arc shape along the axial section direction.

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