A new type of four-cylinder hydraulic disc brake

Abstract

The utility model discloses a novel four-cylinder hydraulic disc brake, comprising: a disc brake body, on which a disc brake groove is provided, and large oil cylinder components and small oil cylinder components are provided on both sides of the disc brake groove; a brake structure, which is placed in the disc brake groove and between the large oil cylinder components and the small oil cylinder components on both sides, and the brake structure is driven by the large oil cylinder components and the small oil cylinder components to brake; a disc, which is located in the center of the brake structure, and the brake function is realized by clamping the disc through the brake structure. The utility model increases the cylinder diameter and the contact area with the brake pad, thereby obtaining a greater thrust, improving the braking performance, and keeping the disc center without swinging, so as to achieve a stable braking effect.

Description

Technical Field

[0001] The utility model relates to a disc brake, in particular to a novel four-cylinder hydraulic disc brake. Background Art

[0002] The existing four-cylinder hydraulic disc brake uses four small-diameter cylinders, and the volume of the oil chamber is small. When braking, the cylinder does not exert enough thrust on the brake pad, which affects the friction between the brake pad and the disc, resulting in insufficient braking force. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a new type of four-cylinder hydraulic disc brake, which is suitable for the disc brake structure of bicycles, power-assisted bicycles, and electric vehicles. The disc brake clamp adopts a four-cylinder separate design, which effectively improves the braking performance and stability of the clamp, and has a strong braking ability, which is more guaranteed for green and safe riding.

[0004] The utility model is realized by the following technical solutions:

[0005] A disc brake body, wherein a disc brake groove is arranged on the disc brake body, and a large oil cylinder assembly and a small oil cylinder assembly are correspondingly arranged on both sides of the disc brake groove;

[0006] The brake structure is placed in the disc brake groove and between the large oil cylinder assembly and the small oil cylinder assembly on both sides, and the brake structure is driven by the large oil cylinder assembly and the small oil cylinder assembly to brake;

[0007] The disc is located in the center of the brake structure, and the brake function is achieved by clamping the disc through the brake structure.

[0008] As a preferred technical solution, the brake structure includes a threaded pin, a brake pad and a spring;

[0009] The brake pads are symmetrically fixed at both ends of the spring sheet, and are placed in the disc brake groove of the disc brake body and in contact with the movable ends of the large cylinder assembly and the small cylinder assembly; a fixing hole is provided above the spring sheet, and a threaded pin passes through the fixing holes of the body and the spring sheet in turn, and the threaded pin is fixed to the body by a latch, so that the brake structure is limitedly set in the disc brake groove.

[0010] As a preferred technical solution, large cylinder assembly mounting grooves are provided on both sides of one end of the disc brake groove, small cylinder assembly mounting grooves are provided on both sides of the other end of the disc brake groove, and the large cylinder assembly is installed in the large cylinder assembly mounting groove, and the small cylinder assembly is installed in the small cylinder assembly mounting groove.

[0011] As a preferred technical solution, the large oil cylinder assembly includes a large oil cylinder and a large rectangular ring;

[0012] The large rectangular ring is installed on the inner ring of the large oil cylinder assembly installation groove, and the large oil cylinder is inserted into the large oil cylinder assembly installation groove and contacts with the inner ring of the large rectangular ring.

[0013] As a preferred technical solution, the small oil cylinder assembly includes a small oil cylinder and a small rectangular ring;

[0014] The small rectangular ring is installed on the inner ring of the small oil cylinder assembly installation groove, and the small oil cylinder is inserted into the small oil cylinder assembly installation groove and contacts with the inner ring of the small rectangular ring.

[0015] As a preferred technical solution, an oil seal cavity corresponding to the large cylinder assembly mounting groove and the small cylinder assembly mounting groove is provided on one side of the disc brake body, and an oil cover is threadedly connected to the oil seal cavity; a lower oil cover oil seal is provided at the end of the oil cover, and the large cylinder assembly mounting groove and the small cylinder assembly mounting groove are sealed by the lower oil cover oil seal.

[0016] As a preferred technical solution, oil filling holes are provided on all four sides of the disc brake body, and the oil filling holes are respectively connected to the large cylinder assembly and the small cylinder assembly; three of the oil filling holes are respectively installed with the first oil stop screw, the second oil stop screw and the third oil stop screw, and the other oil filling hole is connected to the oil pipe through a rotating structure or a direct connection structure.

[0017] As a preferred technical solution, the rotating structure includes a rotating head and a fourth oil seal screw;

[0018] One side of the rotating head is connected to the oil pipe sleeve of the oil pipe, and the fourth oil seal screw passes through the rotating head and is connected to the oil filling hole; oil seals are arranged at both ends of the rotating head.

[0019] As a preferred technical solution, the direct connection structure includes a clamping screw, a copper sleeve and a pointed screw arranged on the oil pipe;

[0020] The clamping screw is connected to the copper sleeve, one end of the pointed screw is connected to the clamping screw, and the other end is placed in the oil filling hole; an oil seal is arranged on the pointed screw.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model increases the diameter of the oil cylinder and the contact area with the brake pad, thereby obtaining a greater thrust and improving the braking performance, and the disc is kept in the center without swinging, thereby achieving a smooth braking effect.

[0023] 2. The disc brake body of the utility model adopts an integrated structure, which has high strength and improved mechanical properties.

[0024] 3. The oil seal position on the oil cap of the utility model is designed to the bottom of the oil cap to avoid residual bubbles around the oil cap teeth, improve the braking feel, and avoid stress concentration around the teeth, which is more reliable.

[0025] 4. The rotating structure of the utility model includes a rotating head and a fourth oil seal screw, which can be freely rotated to adjust the direction of the oil pipe to avoid interference between the oil pipe and the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0029] Figure 3 It is a schematic diagram of the rotating structure of the utility model;

[0030] Figure 4 This is a schematic diagram of the direct connection structure of the utility model;

[0031] Description of reference numerals:

[0032] 1. Oil pipe; 2. Oil pipe sleeve; 3. First oil stop screw; 4. Threaded pin; 5. Brake pad; 6. Spring piece; 7. Latch; 8. Second oil stop screw; 9. Disc brake body; 10. Third oil stop screw; 11. Small rectangular circle; 12. Small oil cylinder; 13. Lower oil cover oil seal; 14. Oil cover; 15. Large oil cylinder; 16. Large rectangular circle; 17. Rotating head; 18. Oil seal; 19. Fourth oil seal screw; 20. Holding screw; 21. Copper sleeve; 22. Pointed nose screw. DETAILED DESCRIPTION

[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0034] like Figure 1-Figure 2 As shown, a novel four-cylinder hydraulic disc brake of the utility model comprises:

[0035] A disc brake body 9, wherein a disc brake groove is provided on the disc brake body 9, and a large oil cylinder assembly and a small oil cylinder assembly are correspondingly provided on both sides of the disc brake groove;

[0036] The brake structure is placed in the disc brake groove and between the large oil cylinder assembly and the small oil cylinder assembly on both sides, and the brake structure is driven by the large oil cylinder assembly and the small oil cylinder assembly to brake;

[0037] The disc is located in the center of the brake structure, and the brake function is achieved by clamping the disc through the brake structure.

[0038] Among them, the disc brake body 8 adopts an integrated structure with high strength and improved mechanical properties.

[0039] In this embodiment, the brake structure includes a threaded pin 4, a brake pad 5 and a spring 6;

[0040] The brake pad 5 is symmetrically fixed at both ends of the spring piece 6, and the brake pad 5 is placed in the disc brake groove of the disc brake body 9 and contacts with the movable ends of the large cylinder assembly and the small cylinder assembly; a fixing hole is provided above the spring piece 6, and the threaded pin 4 passes through the fixing holes of the body and the spring piece 6 in turn, and the threaded pin 4 is fixed to the body by the pin 7, so that the brake structure is limitedly set in the disc brake groove.

[0041] In this embodiment, large cylinder assembly mounting grooves are provided on both sides of one end of the disc brake groove, and small cylinder assembly mounting grooves are provided on both sides of the other end of the disc brake groove, and the large cylinder assembly is installed in the large cylinder assembly mounting groove, and the small cylinder assembly is installed in the small cylinder assembly mounting groove.

[0042] The large oil cylinder assembly includes a large oil cylinder 15 and a large rectangular ring 16;

[0043] The large rectangular ring 16 is installed on the inner ring of the large oil cylinder assembly installation groove, and the large oil cylinder 15 is inserted into the large oil cylinder assembly installation groove and contacts with the inner ring of the large rectangular ring 16 .

[0044] In this embodiment, the small oil cylinder assembly includes a small oil cylinder 12 and a small rectangular ring 11;

[0045] The small rectangular circle 11 is installed on the inner circle of the small cylinder assembly installation groove, and the small cylinder 12 is inserted into the small cylinder assembly installation groove and contacts with the inner circle of the small rectangular circle 11 .

[0046] The existing four-cylinder disc brake has a cylinder diameter of 14 mm, while the cylinder diameters of the disc brake of the utility model are increased to 16 mm and 18 mm respectively, so that the contact area with the brake pad 10 is large, the thrust is greater, and the braking is more stable.

[0047] Among them, an oil seal cavity corresponding to the large cylinder assembly mounting groove and the small cylinder assembly mounting groove is provided on one side of the disc brake body 9, and an oil cap 14 is threadedly connected to the oil seal cavity; a lower oil cap oil seal 13 is provided at the end of the oil cap 14, and the large cylinder assembly mounting groove and the small cylinder assembly mounting groove are sealed by the lower oil cap oil seal 13. The oil seal position on the oil cap is designed to the bottom of the oil cap to avoid residual bubbles around the oil cap tooth pattern, thereby improving the braking feel and avoiding stress concentration around the tooth pattern, thereby increasing reliability.

[0048] Among them, oil filling holes are arranged on all sides of the disc brake body 9, and the oil filling holes are connected with the large cylinder assembly and the small cylinder assembly respectively; the first oil stop screw 3, the second oil stop screw 8 and the third oil stop screw 10 are respectively installed on three of the oil filling holes, and the other oil filling hole is connected with an oil pipe 1 through a rotating structure or a direct connection structure. The oil is guided through the oil pipe 1 and the oil cylinder is pushed at the same time, thereby pushing out the brake pad 10 and clamping the disc at the same time to achieve a smooth braking effect.

[0049] like Figure 3 As shown, the rotating structure includes a rotating head 17 and a fourth oil seal screw 19;

[0050] One side of the rotating head 17 is connected to the oil pipe sleeve 2 of the oil pipe 1, and the fourth oil seal screw 19 passes through the rotating head 17 and is connected to the oil filling hole; oil seals are provided at both ends of the rotating head 17; so that it can rotate freely to adjust the direction of the oil pipe 1 to avoid interference between the oil pipe and the frame.

[0051] like Figure 4 As shown, the direct connection structure includes a clamping screw 20, a copper sleeve 21 and a needle-nosed screw 22 arranged on the oil pipe 1;

[0052] The clamping screw 20 is connected to the copper sleeve 21 , one end of the needle-nosed screw 22 is connected to the clamping screw 20 , and the other end is placed in the oil filling hole; an oil seal is arranged on the needle-nosed screw 22 .

[0053] Here’s how it works:

[0054] The utility model applies pressure to the upper pound handle, and the pressure directly passes through the oil pipe to the four-cylinder hydraulic disc brake, thereby pushing the four oil cylinders in the four-cylinder hydraulic disc brake, and the four oil cylinders on both sides push out the brake pads at the same time; the brake pads on both sides clamp the disc at the same time, and the braking action is completed through friction, and the disc is held in the center without swinging, so as to achieve a stable braking effect.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A new type of four-cylinder hydraulic disc brake, characterized in that: include: A disc brake body (9), wherein a disc brake groove is arranged on the disc brake body (9), and a large oil cylinder assembly and a small oil cylinder assembly are correspondingly arranged on both sides of the disc brake groove; The brake structure is placed in the disc brake groove and between the large oil cylinder assembly and the small oil cylinder assembly on both sides, and the brake structure is driven by the large oil cylinder assembly and the small oil cylinder assembly to brake; The disc is located in the center of the brake structure, and the brake function is achieved by clamping the disc through the brake structure.

2. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: The brake structure comprises a threaded pin (4), a brake pad (5) and a spring (6); The brake pad (5) is symmetrically fixed to the two ends of the spring sheet (6), and the brake pad (5) is placed in the disc brake groove of the disc brake body (9) and contacts the movable ends of the large cylinder assembly and the small cylinder assembly; a fixing hole is arranged above the spring sheet (6), and the threaded pin (4) passes through the fixing holes of the body and the spring sheet (6) in turn, and the threaded pin (4) is fixed to the body by a latch (7), so that the brake structure is limitedly arranged in the disc brake groove.

3. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: Large cylinder assembly mounting grooves are arranged on both sides of one end of the disc brake groove, and small cylinder assembly mounting grooves are arranged on both sides of the other end of the disc brake groove. The large cylinder assembly is installed in the large cylinder assembly mounting groove, and the small cylinder assembly is installed in the small cylinder assembly mounting groove.

4. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: The large oil cylinder assembly comprises a large oil cylinder (15) and a large rectangular ring (16); The large rectangular ring (16) is installed on the inner ring of the large oil cylinder assembly installation groove, and the large oil cylinder (15) is inserted into the large oil cylinder assembly installation groove and contacts with the inner ring of the large rectangular ring (16).

5. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: The small oil cylinder assembly comprises a small oil cylinder (12) and a small rectangular ring (11); The small rectangular ring (11) is installed on the inner ring of the small oil cylinder assembly installation groove, and the small oil cylinder (12) is inserted into the small oil cylinder assembly installation groove and contacts the inner ring of the small rectangular ring (11).

6. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: An oil seal cavity corresponding to the large oil cylinder assembly mounting groove and the small oil cylinder assembly mounting groove is arranged on one side of the disc brake body (9), and an oil cover (14) is threadedly connected to the oil seal cavity; a lower oil cover oil seal (13) is arranged at the end of the oil cover (14), and the large oil cylinder assembly mounting groove and the small oil cylinder assembly mounting groove are sealed by the lower oil cover oil seal (13).

7. The novel four-cylinder hydraulic disc brake according to claim 1 is characterized in that: The disc brake body (9) is provided with oil filling holes on all sides, and the oil filling holes are connected to the large cylinder assembly and the small cylinder assembly respectively; three of the oil filling holes are respectively installed with a first oil stop screw (3), a second oil stop screw (8) and a third oil stop screw (10), and another oil filling hole is connected to an oil pipe (1) via a rotating structure or a direct connection structure.

8. The novel four-cylinder hydraulic disc brake according to claim 7 is characterized in that: The rotating structure comprises a rotating head (17) and a fourth oil sealing screw (19); One side of the rotating head (17) is connected to the oil pipe sleeve (2) of the oil pipe (1), and the fourth oil seal screw (19) passes through the rotating head (17) and is connected to the oil filling hole; oil seals are provided at both ends of the rotating head (17).

9. The novel four-cylinder hydraulic disc brake according to claim 7 is characterized in that: The direct connection structure comprises a clamping screw (20), a copper sleeve (21) and a needle-nosed screw (22) arranged on the oil pipe (1); The clamping screw (20) is connected to the copper sleeve (21); one end of the needle-nosed screw (22) is connected to the clamping screw (20) and the other end is placed in the oil filling hole; an oil seal is arranged on the needle-nosed screw (22).

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