CN217056070U

CN217056070U - Disc brake structure for bicycle

Info

Publication number: CN217056070U
Application number: CN202123304146.XU
Authority: CN
Inventors: 孙浙勇; 唐文贵; 曹玉荣; 阮德林; 卢骏
Original assignee: Karasawa Traffic Equipment Taizhou Co ltd
Current assignee: Karasawa Traffic Equipment Taizhou Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-07-26
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to a disc brake device, and discloses a disc brake structure for a bicycle, which comprises a bracket main body, a driving component, a brake component and a rocker arm; the bracket main body is provided with a clamping part, a first mounting part and a second mounting part are arranged on two sides of the clamping part, and a brake assembly mounting limiting groove part is arranged on the opposite end surface; the driving assembly comprises a stroke cam, a push rod and a rolling body, the rocker arm and a reset torsion spring are sleeved on the push rod and fixedly connected, the rocker arm drives the push rod to move linearly, the push rod props against the braking pieces, and the braking pieces are driven by the elastic part to approach the other side of the rocker arm and reduce the distance between the braking pieces until the disc brake is clamped to stop the wheel. The problem of among the prior art because of the dish drive assembly that stops resets, the dynamics of resetting causes clearance or the desliding to produce between the drive inadequately, leads to jamming and drive mechanism out of control is solved.

Description

Disc brake structure for bicycle

Technical Field

The utility model relates to a dish device of stopping especially involves a bicycle is with dish structure of stopping.

Background

At present, the disc brake is divided into a mechanical disc brake and an oil pressure disc brake, and the mechanical disc brake is to make the brake pad in the caliper to rub and clamp the disc by the pulling force of the brake cable, so as to generate the braking effect. The hydraulic disc brake uses oil as medium, the brake handle is pulled to drive the piston inside to compress the oil, the pressure is directly communicated with the calipers from the oil pipe, thereby pushing the piston in the calipers and driving the brake block to clamp the disc.

The mechanical disc brake has the advantages of compatibility convenience, easy installation and low later maintenance cost, so the mechanical disc brake is popular. Moreover, in mountainous areas, the carbon fiber open ring needs to deal with the change of the tire pressure, the side wall of the rim is seriously damaged due to the heat generated by friction force during braking, and almost all carbon fiber wheels have the phenomenon of ring burning caused by heating. Therefore, the disc brake brings obvious advantages to the road bicycle, and if the responsibility of braking can be released from the rim, all the things can become better and safer.

CN206031672U discloses a mechanical disc brake device among the prior art: the main magnet adsorbs the magnet mounting plate and the disc brake sheet; the mounting sleeve is in limit fit with the second disc brake component; the dish core one end of stopping sets to the polygon axle, and the dish core of stopping passes the installation cover and makes this polygon axle be connected with the polygon hole cooperation on the dish part one of stopping, and the rolling element is installed between dish core and the installation cover of stopping, and magnet two adsorbs the dish core of stopping and the dish piece two of stopping, and the spring mounting is stopped between part one and the dish part two of stopping at the dish. The reset is carried out only through the spring arranged between the first disc brake component and the second disc brake component, the magnet between the disc brake piece and the disc brake core attracts to reset in a follow-up mode, the anti-rotation hole resistance needs to be overcome during reset, the reset effect is poor, clamping stagnation is easy to generate, only one reset spring is arranged, the reset force is insufficient, gaps or slipping is generated between drives, and then the phenomenon that the force transmission mechanism is out of control in an idle running mode is generated.

The mechanical disc brake in the market is not good enough in structural design, and a better disc brake device scheme is provided to meet the requirement of the market on the mechanical disc brake device.

Disclosure of Invention

Not enough to prior art, the utility model provides a bicycle is with dish structure of stopping has solved among the prior art when the drive assembly resets because of the dish is stopped, and the dynamics of resetting causes clearance or desliding inadequately between the drive, leads to jamming and the problem that actuating mechanism is out of control.

In order to achieve the purpose, the utility model discloses a realize through following technical scheme:

the utility model relates to a disc brake structure for a bicycle, which comprises a bracket main body, a driving component, a braking component and a rocker arm; the bracket comprises a bracket main body and is characterized in that a clamping part is arranged on the bracket main body, a first mounting part and a second mounting part are arranged on two sides of the clamping part, and brake assembly mounting limiting groove parts are arranged on opposite end surfaces of the first mounting part and the second mounting part; the driving assembly comprises a stroke cam, a push rod and a rolling body, a rolling body motion slideway is arranged between the stroke cam and the push rod, and the driving assembly is rotationally connected in the first mounting part; the brake assembly comprises an elastic part and a group of brake pieces arranged on the elastic part, positioning through holes are formed in the corresponding positions of the elastic part and the brake pieces, and the positioning through holes are hinged and fixed with the bracket main body; the brake block is embedded in the limiting groove part; the brake device comprises a rocker arm, a reset torsion spring, a push rod, a brake piece and an elastic part, wherein a polygonal mounting hole and a torsional spring limiting hole are formed in one end of the rocker arm, a brake cable connecting structure is arranged at the other end of the rocker arm, the rocker arm and the reset torsion spring are sleeved on the push rod and fixedly connected, the rocker arm drives the push rod to move linearly, the push rod props against the brake piece, and the brake piece is driven by the elastic part to approach the other side of the brake piece to reduce the distance between the brake pieces until a disc brake disc is clamped to stop a wheel.

The further improvement is that: first installation department and the coaxial setting of second installation department, establish cyclic annular positioning disk structure in the first installation department, the anchor ring that cyclic annular positioning disk structure axle center was equipped with first spacing hole, cyclic annular positioning disk structure is equipped with spacing hole of second and the spacing hole of third, the second installation department is established to the screw thread through-hole, the excircle side of screw thread through-hole is equipped with tightly decides the screw thread through-hole.

The further improvement is that: the number of the second limiting holes is 1-4, the second limiting holes are arc-shaped holes with annular surfaces radially arranged, and the third limiting holes are small round holes formed in the annular surfaces.

The further improvement is that: the rolling body is a steel ball, a rolling body movement slideway is arranged on one end face of the stroke cam, a positioning guide boss is arranged on the other end face of the stroke cam, and the positioning guide boss is matched with the second limiting hole.

The further improvement is that: the positioning guide bosses are 1-4 arc-shaped bosses which are axially arranged on the outer circumference of the stroke cam, and the rolling body motion slide ways are radially arranged to be 2-6.

The further improvement lies in that: the rocker arm upper portion is equipped with rocking arm protecting sheathing, rocking arm protecting sheathing covers the dress at the fastening position with rocking arm adaptation, the rocking arm lower part is equipped with the shield, the shield lid closes the reset torsion spring periphery in the rocking arm below, the shield gomphosis is in the annular positioning disk structure outside.

The further improvement lies in that: still include adjustment mechanism, adjustment mechanism is for joining in marriage the dress and is in outer regulation in the second installation department, the outer face of cylinder is equipped with the screw thread outside adjusting, outer regulation both ends face axle center position is equipped with the polygonized structure recess, the polygonized structure recess is interior hexagon structure.

The further improvement lies in that: the support main part still is equipped with a symmetry mount pad and brake cable and wears to adorn the regulating arm, it has the long circle mounting hole to open on the mount pad, be equipped with on the regulating arm and wear to adorn the screw thread through-hole of adjusting the brake cable end.

The beneficial effects of the utility model are that:

1. the whole cooperation is reliable, and it is powerful to reset, has eliminated the jamming that drive assembly reset clearance caused and has lost motion out of control phenomenon, and the braking is rapid, reliable, and it is effectual to reset. The stroke cam is provided with a positioning guide boss and an annular positioning disc structure arranged in the first mounting part of the main body bracket, so that the limit in the bracket main body is more accurate, the fixing is more reliable, the mounting is convenient, and the transmission is accurate; the clamping stagnation and the idle running caused by the reset clearance of the driving assembly are eliminated, and the brake piece is embedded in the limiting groove part to play a good limiting role, so that dirt is contained and the heat dissipation of the disc is facilitated; the corresponding positions of the elastic part and the brake piece are provided with positioning through holes which are hinged and fixed with the bracket main body, and the bracket can be detached and replaced when being seriously abraded, and is easy to maintain;

2. an elastic reset piece is arranged between the brake pieces and is reset in combination with the rocker arm reset torsion spring, so that the reset force is enhanced, the phenomenon that the drive reset elastic force is not free from generating gaps or slipping is eliminated, and the reset is powerful, rapid and reliable;

3. the positioning guide boss has a guide function when being reset, so that the driving assembly is prevented from slipping, the whole brake is failed, and a good reset guide function is realized; the structure is simple, the installation and maintenance are easier, the price is cheaper, and the safety and the reliability are realized.

Drawings

Fig. 1 is an exploded view of a bicycle disc brake.

Fig. 2 is a perspective view of a bicycle disc brake.

FIG. 3 is a schematic view of a bicycle disc brake bracket body.

FIG. 4 is a front elevational view of a first mounting portion of a bicycle disc brake bracket body.

FIG. 5 is a schematic view of a bicycle disc brake travel cam.

The attached drawings are as follows:

1-bracket body, 2-driving component, 3-elastic component, 4-brake block, 6-dust-proof cover, 5-external adjustment, 51-polygon groove, 11-clamping part, 12-first mounting part, 13-second mounting part, 131-fastening screw thread through hole, 14-limit groove part, 15-annular positioning disc structure, 151-ring surface, 16-first limit hole, 17-second limit hole, 171-third limit hole, 18-mounting seat, 19-adjusting arm, 21-stroke cam, 22-push rod, 23-rolling body, 24-rolling body motion slideway, 25-positioning guide boss, 7-rocker arm, 71-polygon mounting hole, 72-torsion spring limit hole, 73-brake cable connecting structure, 8-rocker arm protective shell, 9-reset torsion spring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings only for the convenience of description and simplification of description, but do not indicate or imply that the combination or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-4, a disc brake structure for a bicycle comprises a bracket body 1, a driving assembly 2, a braking assembly and a rocker arm 7; a clamping part 11 is arranged on the bracket main body 1, a first mounting part 12 and a second mounting part 13 are arranged on two sides of the clamping part 11, and brake component mounting limiting groove parts 14 are arranged on opposite end faces of the first mounting part 12 and the second mounting part 13; the driving assembly 2 comprises a stroke cam 21, a push rod 22 and a rolling body 23, a rolling body motion slideway 24 is arranged between the stroke cam 21 and the push rod 22, and the driving assembly 2 is rotatably connected in the first mounting part 12; the brake assembly comprises an elastic part 3 and a group of brake pieces 4 arranged on the elastic part 3, positioning through holes are formed in corresponding positions of the elastic part 3 and the brake pieces 4, and the positioning through holes are hinged and fixed with the bracket main body 1; the brake block 4 is embedded in the limiting groove part 14; one end of the rocker arm 7 is provided with a polygonal mounting hole 71 and a torsional spring limiting hole 72, the other end of the rocker arm 7 is provided with a brake cable connecting structure 73, the rocker arm 7 and a reset torsion spring 9 are sleeved on the push rod 22 and fixedly connected, the rocker arm 7 drives the push rod 22 to move linearly, the push rod 22 props against the brake pads 4, and the brake pads 4 are driven by the elastic part 3 to approach to the other side to reduce the distance between the brake pads 4 until the disc brake is clamped to stop the wheel.

The structure is reliable in overall matching and powerful in resetting, the phenomena of clamping stagnation and idle run out of control caused by the resetting clearance of the driving assembly are eliminated, the idle stroke condition of the rocker arm is improved, the braking is rapid and reliable, and the resetting effect is good. The brake block 4 is embedded in the limiting groove portion 14, so that a good limiting effect is achieved, dirt is contained, and heat dissipation is facilitated. The corresponding positions of the elastic part 3 and the brake block 4 are provided with positioning penetrating holes which are hinged and fixed with the bracket main body 1, and the elastic part can be detached and replaced when being seriously abraded, and is easy to maintain.

More preferably: first installation department 12 and the coaxial setting of second installation department 13, establish cyclic annular positioning disk structure 15 in the first installation department 12, the anchor ring 151 that cyclic annular positioning disk structure 15 axle center was equipped with first spacing hole 16, cyclic annular positioning disk structure 15 is equipped with spacing hole 17 of second and the spacing hole 171 of third, second installation department 13 establishes to the screw thread through-hole, the excircle side of screw thread through-hole is equipped with tightly decides screw thread through-hole 131. 1-4 second limiting holes 17 are formed, the second limiting holes 17 are arc-shaped holes formed in the radial direction of the ring surface 151, and the third limiting holes 171 are small round holes formed in the ring surface 151; by the design, the positioning reliability of the driving assembly is improved, the limiting is more accurate, the fixing is more reliable, the installation is convenient, and the transmission is accurate and flexible.

More preferably: the rolling body 23 is a steel ball, a rolling body motion slideway 24 is arranged on one end face of the stroke cam 21, a positioning guide boss 25 is arranged on the other end face of the stroke cam 21, and the positioning guide boss 25 is matched with the second limiting hole 17. The positioning guide bosses 25 are 1-4 arc-shaped bosses which are axially arranged on the outer circumference of the stroke cam 21, and the rolling element motion slide ways 24 are radially arranged in 2-6 numbers; due to the design, the positioning reliability of the driving assembly is improved, the arc-shaped boss structure also has guidance, the stroke cam is ensured not to slip safely, and the clamping stagnation factor caused by the slipping of the stroke cam or the failure of returning to the position is eliminated.

More preferably: rocker arm 7 upper portion is equipped with rocker arm protecting sheathing 8, rocker arm protecting sheathing 8 covers the dress at the fastening position with rocker arm 7 adaptation, rocker arm 7 lower part is equipped with shield 6, shield 6 covers the reset torsion spring 9 periphery of closing in rocker arm 7 below, shield 6 gomphosis is in the cyclic annular positioning disk structure 15 outside. So design, dustproof respond well, guarantee drive assembly's good operation, prolonged life.

More preferably: still include adjustment mechanism, adjustment mechanism is for joining in marriage the dress and is in outer regulation 5 in the second installation department 13, the outer face of cylinder of outer regulation 5 is equipped with the screw thread, 5 both ends face axle center positions of outer regulation are equipped with polygonized structure recess 51, polygonized structure recess 51 is interior hexagon structure. The design is favorable for adjustment during brake installation, and the brake effect is ensured.

More preferably: the support main body 1 is further provided with a symmetrical mounting seat 18 and a brake cable penetrating and installing adjusting arm 19, an oblong mounting hole is formed in the mounting seat 18, and a threaded through hole for penetrating and installing the tail end of the adjusting brake cable is formed in the adjusting arm 19. And the good adaptability of the brake is ensured.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above-mentioned embodiment, and make different applications and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims

1. The utility model provides a bicycle is with dish structure of stopping which characterized in that: comprises a bracket main body (1), a driving component (2), a braking component and a rocker arm (7);

a clamping part (11) is arranged on the bracket main body (1), a first installation part (12) and a second installation part (13) are arranged on two sides of the clamping part (11), and brake assembly installation limiting groove parts (14) are arranged on opposite end faces of the first installation part (12) and the second installation part (13);

the driving assembly (2) comprises a stroke cam (21), a push rod (22) and a rolling body (23), a rolling body motion slideway (24) is arranged between the stroke cam (21) and the push rod (22), and the driving assembly (2) is rotatably connected in the first mounting part (12);

the brake assembly comprises an elastic part (3) and a group of brake pads (4) arranged on the elastic part (3), positioning penetrating holes are formed in corresponding positions of the elastic part (3) and the brake pads (4), and the positioning penetrating holes are hinged and fixed with the bracket main body (1); the brake block (4) is embedded in the limiting groove part (14);

one end of the rocker arm (7) is provided with a polygonal mounting hole (71) and a torsion spring limiting hole (72), the other end of the rocker arm (7) is provided with a brake cable connecting structure (73), the rocker arm (7) and a reset torsion spring (9) are sleeved on the push rod (22) and fixedly connected, the rocker arm (7) drives the push rod (22) to move linearly, the push rod (22) props against the brake pads (4), and the brake pads (4) are driven by the elastic part (3) to approach to the other side of the brake pads to reduce the distance between the brake pads (4) until the disc brake discs are clamped to stop the wheels.

2. The disc brake structure for bicycles of claim 1, wherein: first installation department (12) and second installation department (13) coaxial arrangement, establish annular positioning disk structure (15) in first installation department (12), the anchor ring (151) that annular positioning disk structure (15) axle center was equipped with first spacing hole (16), annular positioning disk structure (15) are equipped with spacing hole of second (17) and spacing hole of third (171), establish to the screw through-hole second installation department (13), the excircle side of screw through-hole is equipped with tightly decides screw through-hole (131).

3. The disc brake structure for bicycles of claim 2, characterized in that: the number of the second limiting holes (17) is 1-4, the second limiting holes (17) are arc-shaped holes radially formed in the ring surface (151), and the third limiting hole (171) is a small round hole formed in the ring surface (151).

4. The bicycle disc brake structure according to claim 1, wherein: the rolling body (23) is a steel ball, a rolling body motion slideway (24) is arranged on one end face of the stroke cam (21), a positioning guide boss (25) is arranged on the other end face of the stroke cam (21), and the positioning guide boss (25) is matched with the second limiting hole (17).

5. The disc brake structure for bicycles of claim 4, wherein: the positioning guide bosses (25) are 1-4 arc-shaped bosses which are axially arranged on the outer circumference of the stroke cam (21), and the rolling body motion slide ways (24) are radially arranged to be 2-6.

6. The bicycle disc brake structure according to claim 1, wherein: rocking arm (7) upper portion is equipped with rocking arm protecting sheathing (8), rocking arm protecting sheathing (8) cover the dress at the fastening position with rocking arm (7) adaptation, rocking arm (7) lower part is equipped with shield (6), reset torsion spring (9) periphery in rocking arm (7) below is closed in shield (6) lid, shield (6) gomphosis is in cyclic annular positioning disk structure (15) outside.

7. The bicycle disc brake structure according to any one of claims 1-6, wherein: still include adjustment mechanism, adjustment mechanism is for joining in marriage the dress and is in outer regulation (5) in second installation department (13), outer face of cylinder is equipped with the screw thread in outer regulation (5), outer regulation (5) both ends face axle center position is equipped with polygonized structure recess (51), polygonized structure recess (51) are interior hexagon structure.

8. The disc brake structure for bicycles of claim 7, wherein: support main part (1) still is equipped with a symmetry mount pad (18) and brake cable and wears dress regulating arm (19), it has the long circle mounting hole to open on mount pad (18), be equipped with on regulating arm (19) and wear to adorn the screw thread through-hole of adjusting the brake cable end.