CBS duplex brake

Abstract

A CBS duplex brake comprises a brake cover, a brake shoe assembly is arranged on the lower end face of the brake cover, the upper end face of the brake cover is fixedly connected with a brake arm, a center shaft sleeve hole axially penetrating through the brake cover is formed in the center of the brake cover, the lower end of a center shaft is fixedly connected with a gear, and a gear shaft mounting hole is formed in the side edge of the center shaft sleeve hole. A gear shaft mounting hole penetrating through the brake cover is obliquely formed in the upper end face of the brake cover, a gear shaft is meshed with a gear, a double-hole brake cable boss is arranged on the outer circumference of the upper end face of the brake cover, a cam mounting hole axially penetrating through the brake cover is formed in the other side of a central shaft sleeve hole, and a cam spline is arranged at the upper end of a cam. The cam spline is fixedly connected with the brake arm, a positioning shaft mounting hole is axially formed in the side wall of the lower end face of the brake cover, the positioning shaft mounting hole and the cam hole are oppositely formed, the brake shoe assembly and the brake cover are fixedly connected through the cam and the positioning shaft, and an oil seal mounting hole is formed in the lower end of an inner hole of the brake cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of motorcycle brake, concretely relates to a CBS double brake brake. BACKGROUND

[0002] At present, the motorcycle commonly adopts respectively arranging brake system to front and rear wheels, needs the rider to operate front brake or rear brake when driving, then just obtains the braking force of front brake or rear brake, is the simplest brake braking mode, according to the requirement of brake line transmission braking control force, corresponding brake just provides the installation structure and position of a brake line, but the international market requires higher driving brake safety, requires providing the motorcycle with CBS linkage brake, CBS linkage brake is the hydraulic brake system specially used for motorcycle, needs linkage to the brake of front and rear wheels to distribute the braking force of front and rear wheels reasonably, guarantees that front and rear wheels can brake simultaneously when the rider operates front brake or rear brake alone, improves braking stability and safety, to realize the effect of linkage operation brake, the brake needs to provide the installation structure and position of an additional brake line, satisfies the demand of motorcycle arrangement CBS linkage brake system, namely CBS double brake brake.

[0003] Therefore, it is urgent to provide a CBS double brake brake capable of satisfying the arrangement of the CBS linkage brake system of the motorcycle. SUMMARY

[0004] The utility model aims at the corresponding insufficient of prior art, provides a CBS double brake brake, and the brake can better play the braking performance of the brake, and improves the braking stability and safety.

[0005] The utility model discloses a CBS double brake brake, including brake cover, the lower end of brake cover is provided with brake shoe block assembly, and the upper end of brake cover is connected with brake arm and is fixed, the central portion of brake cover is provided with the central shaft sleeve hole that axially penetrates brake cover, and the central shaft sleeve hole is communicated with brake cover hole, and the central shaft sleeve hole is provided with central shaft, and the lower end of central shaft is connected with gear and is fixed, and the side of central shaft sleeve hole is provided with gear shaft mounting hole, the upper end of brake cover is provided with gear shaft mounting hole that penetrates brake cover and is inclined, and the included angle of gear shaft mounting hole and brake cover lower end surface is alpha, and gear shaft mounting hole is provided with gear shaft, and gear shaft and gear are engaged, and the outer circle of the upper end of brake cover is provided with double hole brake line boss, and brake line mounting hole is arranged on double hole brake line boss, the other side of central shaft sleeve hole is provided with cam mounting hole that axially penetrates brake cover, and cam mounting hole is provided with cam, and the upper end of cam is provided with cam spline, and cam spline is connected with brake arm and is fixed, and the lateral wall on brake cover lower end is axially provided with positioning shaft mounting hole, and positioning shaft mounting hole is provided with positioning shaft, and positioning shaft mounting hole is opposite to cam hole, brake shoe block assembly and brake cover are connected and fixed through cam and positioning shaft, the lower end of brake cover hole is oil seal mounting hole, and oil seal mounting hole is provided with oil seal.

[0006] The front end of the brake arm is provided with a brake arm spline hole that is in communication with a brake arm break, the cam spline is mounted in the brake arm spline hole, a cam spline groove is formed in the middle section of the cam spline, the cam spline groove is in communication with the brake arm spline hole, a fastening bolt is mounted between the cam spline groove and the brake arm spline hole, a return spring is arranged on the outer circumference of the upper end of the cam mounting hole, one end of the return spring is inserted into a return spring hole on the surface of the brake cover, and the other end of the return spring is connected with the front end of the brake arm.

[0007] The brake arm has an upper layer and a lower layer that are parallel to each other, and the upper layer and the lower layer of the middle part of the brake arm are adhered and welded.

[0008] The top end of the gear shaft mounting hole is offset to form a limiting threaded blind hole that penetrates the gear shaft mounting hole, a limiting screw with limiting function is mounted in the limiting threaded blind hole, and a bearing sleeve is arranged between the upper end of the gear shaft and the gear shaft mounting hole.

[0009] The brake shoe block assembly includes a brake shoe body and a shoe spring, one end of the brake shoe body is mounted on a cam flat square at the lower end of the cam, the other end of the brake shoe body is mounted on the lower end of the positioning shaft, the two ends of the brake shoe body are respectively provided with shoe spring holes, and the two ends of the shoe spring pass through the shoe spring holes to form the brake shoe block assembly with the brake shoe body.

[0010] An adjusting gasket is arranged between the upper end surface of the gear and the central shaft.

[0011] The included angle between the gear shaft mounting hole and the lower end surface of the brake cover is 4°.

[0012] An indicator is arranged between the lower end surface of the front end of the brake arm and the brake cover.

[0013] The double-hole brake line boss is arranged on the outer circumference of the right brake cover of the gear shaft mounting hole, the cam mounting hole is arranged opposite to the upper end of the gear shaft mounting hole, the rear end of the brake arm is provided with two brake arm elliptical holes, and the distance between the two brake arm elliptical holes and the double-hole brake line boss is the same.

[0014] A damping groove is arranged on one side of the upper end surface of the brake cover.

[0015] The utility model discloses a brake arm, which is characterized in that the upper and lower layers of the middle part of the brake arm are firmly bonded and welded, the space for assembling bolts is left on one side of the brake arm spline hole by means of bending, the space for assembling brake lines and fastening bolts is left on one side of the brake arm elliptical hole, the brake arm is closed by means of welding and lapping, the problem of insufficient rigidity caused by the extension of materials due to the provision of additional brake line mounting space for the brake arm elliptical hole is solved, and the strength of the brake arm is improved. The relative offset arrangement of the brake arm elliptical holes is for the following two purposes: first, the brake arm elliptical holes have the same initial braking distance as the double-hole brake line boss of the brake cover, which facilitates the standardization of the length of the motorcycle brake lines; second, the strength of the outer brake arm elliptical hole is slightly lower than that of the inner brake arm elliptical hole, and in order to ensure safety in use, when the brake arm rotates to transmit the same braking torque, the rotation distance of the outer brake arm elliptical hole should be slightly longer than that of the inner brake arm elliptical hole, so as to prolong the time period of contact and friction braking between the brake shoe block assembly and the wheel hub and reduce the reaction force at the outer brake arm elliptical hole. The rotation counting mechanism formed by the meshing of the gear and the gear shaft can transmit the rotation number of the motorcycle wheel hub, and provide hardware support for the mileage and counting of the motorcycle. The brake arm and the cam are the only accessories that need to be kept in close fit at all times as the brake control force transmission mechanism, and the close fit of the spline structure increases the contact area of the two accessories and ensures the strength of the fastening structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a top view of the utility model;

[0017] Figure 2 It is a bottom view of the utility model;

[0018] Figure 3 It is a sectional view of the utility model;

[0019] Figure 4 It is a sectional view of the utility model in F-F direction;

[0020] Figure 5 It is a sectional view of the utility model in A-A direction;

[0021] Figure 6 It is a sectional view of the utility model in B-B direction;

[0022] Figure 7 It is a C-C sectional view of the utility model;

[0023] Figure 8 It is a sign structure schematic view;

[0024] Figure 9 It is a reset spring structure schematic view. DETAILED DESCRIPTION

[0025] As Figures 1 to 9 shown, a CBS double brake brake, including brake cover 1, the lower end of brake cover 1 is provided with brake shoe assembly 5, the upper end of brake cover 1 is connected with brake arm 9 and fixed, the central part of brake cover 1 is provided with central shaft sleeve hole 15 axially penetrating brake cover 1, central shaft sleeve hole 15 and brake cover inner hole 1-1 are interconnected, central shaft 13 is arranged in central shaft sleeve hole 15, the lower end of central shaft 13 is connected with gear 12 and fixed, the side of central shaft sleeve hole 15 is provided with gear shaft mounting hole 2, the upper end of brake cover 1 is provided with gear shaft mounting hole 2 axially penetrating brake cover 1, the included angle between gear shaft mounting hole 2 and the lower end of brake cover 1 is 4 °, gear shaft 20 is arranged in gear shaft mounting hole 2, gear shaft 20 and gear 12 are mutually engaged, double-hole brake line boss 17 is arranged on the outer circumference of the upper end of brake cover 1, brake line mounting hole 17-1 is arranged on double-hole brake line boss 17, the other side of central shaft sleeve hole 15 is provided with cam mounting hole 7 axially penetrating brake cover 1, cam 6 is arranged in cam mounting hole 7, the upper end of cam 6 is provided with cam spline 11, cam spline 11 is connected with brake arm 9 and fixed, positioning shaft mounting hole 3 is arranged axially on the side wall of the lower end of brake cover 1, positioning shaft 4 is arranged in positioning shaft mounting hole 3, positioning shaft mounting hole 3 is arranged opposite to cam 6 hole, brake shoe assembly 5 is connected with brake cover 1 through cam 6 and positioning shaft 4 and fixed, the lower end of brake cover inner hole 1-1 is oil seal mounting hole 21, oil seal 22 is arranged in oil seal mounting hole 21.

[0026] The front end of the brake arm 9 is provided with a brake arm spline hole 9-3, which is communicated with the brake arm break 9-2. The cam spline 11 is installed in the brake arm spline hole 9-3. The middle section of the cam spline 11 is provided with a cam spline groove 11-1, which is communicated with the brake arm spline hole 9-3. The fastening bolt 8 is installed between the cam spline groove 11-1 and the brake arm spline hole 9-3. The upper end of the cam mounting hole 7 is provided with a return spring 10. One end of the return spring 10 is inserted into the return spring hole on the surface of the brake cover 1. The other end of the return spring 10 is connected and fixed with the front end of the brake arm 9. The brake arm 9 is a parallel upper and lower structure. The middle part of the brake arm 9 is adhered and welded. The lower end surface of the front end of the brake arm 9 and the brake cover 1 are provided with an indicator 26. The indicator 26 is a circular sheet with an outward protruding small square block. The center is a spline hole. The surface of the small square block is provided with an arrow pointing mark. The double-hole brake line boss 17 is arranged on the right side of the brake cover outside the circumference of the gear shaft mounting hole 2. The cam mounting hole 7 is arranged opposite to the upper end of the gear shaft mounting hole 2. The rear end of the brake arm 9 is provided with two brake arm oval holes 9-1. The distance between the two brake arm oval holes 9-1 and the double-hole brake line boss 17 is the same. The strength of the outer brake arm oval hole is less than that of the inner brake arm oval hole. The center of the inner oval hole slightly deviates from the long axis of the brake arm. The center of the outermost oval group deviates from the long axis of the brake arm in a large amplitude. The centers of the two groups of oval holes are respectively offset to build the same distance with the double-hole brake line boss of the brake cover. The closing mode of this side is welding lap closing. The brake block assembly 5 includes a brake block body 24 and a block tension spring 23. One end of the brake block body 24 is installed on the cam flat square at the lower end of the cam 6. The other end of the brake block body 24 is installed on the lower end of the positioning shaft 4. The two ends of the brake block body 24 are respectively provided with block tension spring holes. The two ends of the block tension spring 23 pass through the block tension spring holes to form the brake block assembly 5 with the brake block body 24. The cam 6 passes through the cam mounting hole 7. The flat square at the lower end of the cam 6 is on the same side of the brake cover positioning shaft 4 to jointly position and limit the brake block assembly. The cam spline 11 is sequentially provided with a return spring 10, an indicator 26, and a brake arm 9. The spline assembly of the cam 6, the indicator 26, and the brake arm 9 limits the relative rotation among them. The indicator 26 is close to the brake cover 1. The brake arm 9 is slightly pressed under the action of the brake block assembly 5. The brake arm 9 limits the tendency of the return spring 10 to move along the axial direction of the cam 6 in a pressing manner. The brake arm 9 and the cam spline groove 11-1 form a near circular through hole assembly bolt, nut, and other fasteners. When the bolt is fastened, the brake arm break 9-2 is deformed to change from a clearance fit to a close fit. The double-hole brake line boss 17, the brake arm 9, and the cam 6 build a brake operating force transmission mechanism.The top end of the pin shaft mounting hole 2 is provided with a limiting threaded blind hole 2-1 penetrating the pin shaft mounting hole 2, a limiting screw 19 with a limiting function is mounted in the limiting threaded blind hole 2-1, a supporting sleeve 25 is arranged between the upper end of the pin shaft 20 and the pin shaft mounting hole 2, the supporting sleeve 25 restricts the movement of the pin shaft 20 along the axial direction, so that the pin shaft 20 can only rotate. An adjusting gasket 16 is arranged between the upper end surface of the gear 12 and the central shaft 13. The upper end surface of the brake cover 1 is provided with a damping groove 18.

[0027] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and the changes made by the person skilled in the art to the present application without departing from the spirit of the present application all fall within the protection scope of the present application.

Claims

1. A CBS dual-brake system, comprising a brake cover (1), wherein a brake shoe assembly (5) is disposed on the lower end face of the brake cover (1), and the upper end face of the brake cover (1) is connected and fixed to a brake arm (9), characterized in that: The brake cover (1) has a central bushing hole (15) that penetrates the brake cover (1) axially. The central bushing hole (15) is connected to the inner hole (1-1) of the brake cover. A central shaft (13) is installed in the central bushing hole (15). The lower end of the central shaft (13) is connected and fixed to the gear (12). A gear shaft mounting hole (2) is provided on the side of the central bushing hole (15). The upper end face of the brake cover (1) is inclined to provide a gear shaft mounting hole (2) that penetrates the brake cover (1). The angle between the gear shaft mounting hole (2) and the lower end face of the brake cover (1) is α. A gear shaft (20) is installed in the gear shaft mounting hole (2). The gear shaft (20) meshes with the gear (12). A double-hole brake line boss (17) is provided on the outer circumference of the upper end face of the brake cover (1). The double-hole brake line boss (17) is provided with... A brake line mounting hole (17-1) is provided. On the other side of the central bushing hole (15), a cam mounting hole (7) is provided that penetrates the brake cover (1) axially. A cam (6) is provided in the cam mounting hole (7). A cam spline (11) is provided at the upper end of the cam (6). The cam spline (11) is connected and fixed to the brake arm (9). A positioning shaft mounting hole (3) is provided axially on the side wall of the lower end face of the brake cover (1). A positioning shaft (4) is provided in the positioning shaft mounting hole (3). The positioning shaft mounting hole (3) is set opposite to the cam (6) hole. The brake shoe assembly (5) is connected and fixed to the brake cover (1) through the cam (6) and the positioning shaft (4). The lower end of the inner hole (1-1) of the brake cover is an oil seal mounting hole (21). An oil seal (22) is provided in the oil seal mounting hole (21).

2. The CBS dual-brake device according to claim 1, characterized in that: The front end of the brake arm (9) is provided with a brake arm spline hole (9-3), which is connected to the brake arm break (9-2). A cam spline (11) is installed in the brake arm spline hole (9-3). A cam spline groove (11-1) is provided in the middle section of the cam spline (11), which is connected to the brake arm spline hole (9-3). A fastening bolt (8) is installed between the cam spline groove (11-1) and the brake arm spline hole (9-3). A return spring (10) is provided on the outer circumference of the upper end of the cam mounting hole (7). One end of the return spring (10) is inserted into the return spring hole on the surface of the brake cover (1), and the other end of the return spring (10) is connected and fixed to the front end of the brake arm (9).

3. The CBS dual-brake device according to claim 2, characterized in that: The brake arm (9) is a parallel upper and lower layer structure, and the upper and lower layers of the brake arm (9) are attached and welded together in the middle.

4. The CBS dual-brake device according to claim 1, characterized in that: The top end of the gear shaft mounting hole (2) is offset to provide a limiting thread blind hole (2-1) that penetrates the gear shaft mounting hole (2). A limiting screw (19) with limiting function is installed in the limiting thread blind hole (2-1). A support sleeve (25) is provided between the upper end of the gear shaft (20) and the gear shaft mounting hole (2).

5. The CBS dual-brake device according to claim 1, characterized in that: The brake shoe assembly (5) includes a brake shoe body (24) and a shoe spring (23). One end of the brake shoe body (24) is mounted on the cam flat at the lower end of the cam (6), and the other end of the brake shoe body (24) is mounted on the lower end of the positioning shaft (4). Shoe spring holes are provided at both ends of the brake shoe body (24). Both ends of the shoe spring (23) pass through the shoe spring holes and form the brake shoe assembly (5) with the brake shoe body (24).

6. The CBS dual-brake device according to claim 1, characterized in that: An adjusting shim (16) is provided between the upper end face of the gear (12) and the central shaft (13).

7. The CBS dual-brake device according to claim 1, characterized in that: The included angle between the gear shaft mounting hole (2) and the lower end face of the brake cover (1) is 4°.

8. The CBS dual-brake device according to claim 1, characterized in that: An indicator plate (26) is provided between the lower end face of the front end of the brake arm (9) and the brake cover (1).

9. The CBS dual-brake device according to claim 1, characterized in that: The double-hole brake line boss (17) is set on the outer circumference of the brake cover on the right side of the gear shaft mounting hole (2). The cam mounting hole (7) is set opposite to the upper end of the gear shaft mounting hole (2). The rear end of the brake arm (9) is provided with two brake arm elliptical holes (9-1). The distance between the two brake arm elliptical holes (9-1) and the double-hole brake line boss (17) is the same.

10. The CBS dual-brake device according to claim 1, characterized in that: A vibration damping groove (18) is provided on one side of the upper end face of the brake cover (1).

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