A new drum brake against brake bias

Abstract

The utility model discloses a novel drum brake of preventing braking deviation relates to automobile brake technical field, including brake bottom plate, the brake bottom plate top is provided with brake sub -pump, brake sub -pump both sides are provided with one end of brake shoe assembly, the other end of brake shoe assembly is connected with adjusting unit, the fixed sheet is provided with above brake sub -pump, the both sides of fixed sheet above brake sub -pump all are provided with fixed column, the both ends of fixed column are connected with fixed sheet, the position of brake sub -pump corresponds the bottom of brake bottom plate and is provided with adjusting unit, the utility model discloses a novel drum brake of preventing braking deviation above, has improved the braking symmetry and stability of drum brake significantly, has prevented effectively braking deviation phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake technology, and in particular to a novel drum brake for preventing braking deviation. Background Technology

[0002] The two brake shoes of a traditional drum brake (usually called the "leading shoe" and the "following shoe") are not structurally perfectly symmetrical. During braking, hydraulic or pneumatic pressure pushes the piston of the brake caliper, causing the brake shoes on both sides to expand outward. However, the positioning of the brake shoes usually relies only on the return spring at the lower end and the pin or simple limiting structure at the upper end. This positioning method has free play and lacks a mandatory synchronous constraint mechanism. This asynchrony directly leads to unequal braking torque generated by the left and right wheels. When the vehicle is traveling at high speed or braking suddenly, this difference in braking force will cause the vehicle to generate a deflection torque around the vertical axis, causing the vehicle to unconsciously "deviate" to the side with greater braking force. In severe cases, it may even cause the vehicle to lose control or fishtail, posing a great safety hazard.

[0003] When braking during forward or backward movement, the brake pads on one side will expand outward. Due to the connection between the two brake pads, the outward expanding brake pad will cause the non-operating brake pad on the other side to move inward. This repeated action will cause braking deviation and braking distance, resulting in poor braking performance. Utility Model Content

[0004] The purpose of this invention is to provide a novel drum brake that prevents braking deviation, significantly improving the braking symmetry and stability of the drum brake and effectively preventing braking deviation.

[0005] To achieve the above objectives, this utility model provides a novel drum brake for preventing braking deviation, comprising a brake base plate, a brake caliper disposed on the top of the brake base plate, one end of a brake shoe assembly disposed on both sides of the brake caliper, an adjustment unit connected to the other end of the brake shoe assembly, a fixing plate disposed above the brake caliper, and fixing posts disposed on both sides of the fixing plate corresponding to the upper part of the brake caliper, the fixing posts being connected to the two ends of the fixing plate, and the adjustment unit being disposed at the bottom of the brake base plate corresponding to the position of the brake caliper.

[0006] Preferably, the brake shoe assembly includes a brake rib, an arc-shaped rib is provided on the outer arc of the brake rib, a brake pad is attached to the outer arc of the arc-shaped rib, a compression spring is provided in the middle position of the brake rib, the two sides of the brake caliper are connected to the top of the brake rib, and a pull-down spring and the adjustment unit are provided at the bottom of the brake rib.

[0007] Preferably, the top ends of both the braking rib and the arc-shaped rib form grooves, and the grooves are engaged with the fixing column.

[0008] Preferably, the adjustment unit includes an adjustment wheel, and an adjustment tube and an adjustment sleeve are respectively provided on both sides of the adjustment wheel. The two ends of the adjustment tube and the adjustment sleeve are connected to the brake rib.

[0009] Preferably, a return spring is provided at one end of the fixing plate, and the other end of the return spring is connected to the brake rib plate.

[0010] Preferably, a support plate is provided below the brake caliper, and both ends of the support plate are connected to the brake ribs on both sides.

[0011] Therefore, the novel drum brake with the above-described structure for preventing braking deviation has the following advantages compared with the prior art: This invention significantly improves the braking symmetry and stability of drum brakes, effectively prevents braking deviation, and ensures that the brake shoe assemblies on both sides can expand outward synchronously and symmetrically during braking, thereby ensuring the uniform distribution of braking force on both brake drums and avoiding vehicle deviation caused by excessive braking force on one side.

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of an embodiment of a novel drum brake for preventing braking deviation according to this utility model; Figure 2 This is a side angle structural diagram of an embodiment of a novel drum brake for preventing braking deviation according to this utility model; Figure Labels 1. Brake base plate; 2. Brake cylinder; 3. Brake shoe assembly; 4. Adjustment unit; 5. Fixing plate; 6. Fixing post; 7. Pull-down spring; 8. Return spring; 9. Support plate; 31. Brake rib; 32. Arc-shaped rib; 33. Brake pad; 34. Compression spring; 35. Groove; 41. Adjusting wheel; 42. Adjusting tube; 43. Adjusting sleeve. Detailed Implementation

[0014] Example In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] like Figures 1-2 As shown, this utility model discloses a novel drum brake for preventing braking deviation, comprising a brake base plate 1, a brake caliper 2 disposed on the top of the brake base plate 1, one end of a brake shoe assembly 3 disposed on both sides of the brake caliper 2, an adjustment unit 4 connected to the other end of the brake shoe assembly 3, a fixing plate 5 disposed above the brake caliper 2, and fixing posts 6 disposed on both sides of the fixing plate 5 corresponding to the top of the brake caliper 2, the fixing posts 6 being connected to both ends of the fixing plate 5, and the adjustment unit 4 being disposed at the bottom of the brake base plate 1 corresponding to the position of the brake caliper 2.

[0016] The brake shoe assembly 3 includes a brake rib 31, an arc-shaped rib 32 is provided on the outer arc of the brake rib 31, a brake pad 33 is attached to the outer arc of the arc-shaped rib 32, a compression spring 34 is provided in the middle position of the brake rib 31, the two sides of the brake caliper 2 are connected to the top of the brake rib 31, and a pull-down spring 7 and an adjustment unit 4 are provided at the bottom of the brake rib 31.

[0017] The top ends of the brake rib plate 31 and the arc-shaped rib plate 32 form a groove 35, which is engaged with the fixing column 6.

[0018] The adjustment unit 4 includes an adjustment wheel 41, with an adjustment tube 42 and an adjustment sleeve 43 respectively provided on both sides of the adjustment wheel 41. The two ends of the adjustment tube 42 and the adjustment sleeve 43 are connected to the brake ribs.

[0019] One end of the return spring 8 is provided in the middle of the fixed plate 5, and the other end of the return spring 8 is connected to the brake rib plate 31.

[0020] A support plate 9 is provided below the brake caliper 2, and the two ends of the support plate 9 are connected to the brake ribs 31 on both sides.

[0021] In the specific implementation process, the fixing device set on the top of the brake caliper includes a fixing plate and a fixing post. The fixing plate can effectively control the pull of the return spring on the brake shoes on both sides, reducing the impact of the working brake shoe on the other brake shoe. In addition, the fixing post can use the groove formed by the brake rib and the arc rib to hold the brake shoe on the non-working side, ensuring that the braking distance between the brake shoes remains unchanged, thereby effectively improving the service life of the brake.

[0022] Therefore, the present invention provides a novel drum brake with the above-mentioned structure that prevents braking deviation, which significantly improves the braking symmetry and stability of the drum brake and effectively prevents braking deviation.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A novel drum brake for preventing braking deviation, characterized in that: The system includes a brake backplate, a brake caliper is mounted on the top of the brake backplate, brake shoe assemblies are mounted on both sides of the brake caliper, and an adjustment unit is connected to the other end of the brake shoe assembly. A fixing plate is mounted above the brake caliper, and fixing posts are mounted on both sides of the fixing plate corresponding to the top of the brake caliper. The fixing posts are connected to both ends of the fixing plate. The adjustment unit is located at the bottom of the brake backplate corresponding to the position of the brake caliper. The brake shoe assembly includes a brake rib plate, an arc-shaped rib plate is provided on the outer arc of the brake rib plate, a brake pad is attached to the outer arc of the arc-shaped rib plate, a compression spring is provided in the middle position of the brake rib plate, the two sides of the brake caliper are connected to the top of the brake rib plate, and a pull-down spring and the adjustment unit are provided at the bottom of the brake rib plate. The top ends of the brake rib and the arc-shaped rib form grooves, and the grooves are engaged with the fixing column. The adjustment unit includes an adjustment wheel, and an adjustment tube and an adjustment sleeve are respectively provided on both sides of the adjustment wheel. The two ends of the adjustment tube and the adjustment sleeve are connected to the brake rib plate.

2. The novel drum brake for preventing braking deviation according to claim 1, characterized in that: One end of the fixed plate is provided with a return spring, and the other end of the return spring is connected to the brake rib plate.

3. A novel drum brake for preventing braking deviation according to claim 2, characterized in that: A support plate is provided below the brake caliper, and both ends of the support plate are connected to the brake ribs on both sides.

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