A clamping drum brake

Abstract

The present invention relates to the technical field of automobile accessories, and specifically to a clamping drum brake; it comprises a brake drum and a caliper, wherein the caliper is arranged inside the brake drum and fixedly connected to the brake drum, the brake drum comprises a rotating shell and a fixed cover, the fixed cover is arranged on one side of the rotating shell and is rotatably connected to the rotating shell, the caliper is arranged on the inner side of the rotating shell and cooperates with the rotating shell, the rotating shell has an air outlet and blades, the air outlet is arranged on the side of the rotating shell away from the fixed cover and penetrates the rotating shell, the blades are arranged on the inner side of the air outlet, when the rotating shell rotates synchronously with the wheel, the air flows rapidly along the surface of the blades, resulting in a decrease in the air pressure at the air outlet, the internal air of the rotating shell is extracted, the internal air circulation of the brake drum is accelerated, the heat dissipation efficiency of the brake is improved, and the problem that the existing drum brake is prone to overheating, which leads to a decrease in braking efficiency, is solved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, in particular to a clamping drum brake. Background Art

[0002] Good automobile braking performance is an important guarantee for automobile driving safety. Existing automobile brakes are roughly divided into two types: drum type and disc type. Drum brakes have been widely used on various large and small cars due to their simple structure, strong braking force and low manufacturing cost.

[0003] Although the existing drum brake has strong braking force, it is prone to overheating failure during a long braking process due to its poor heat dissipation capacity, which leads to a decrease in braking efficiency. Summary of the invention

[0004] The object of the present invention is to provide a clamping drum brake to solve the problem that the existing drum brake is prone to overheating, thereby causing a decrease in braking efficiency.

[0005] To achieve the above-mentioned object, the present invention provides a clamping drum brake, comprising a brake drum and a caliper, wherein the caliper is arranged inside the brake drum and fixedly connected to the brake drum, the brake drum comprises a rotating shell and a fixed cover, the fixed cover is arranged on one side of the rotating shell and rotatably connected to the rotating shell, the caliper is arranged on the inner side of the rotating shell and cooperates with the rotating shell, and the caliper is fixedly connected to the fixed cover;

[0006] The rotating shell has an air outlet and blades. The air outlet is arranged on a side of the rotating shell away from the fixed cover and passes through the rotating shell. The blades are arranged on the inner side of the air outlet.

[0007] When the rotating shell rotates synchronously with the wheel, the air flows rapidly along the surface of the blade, causing the air pressure at the air outlet to decrease, thereby extracting the internal air of the rotating shell, accelerating the internal air circulation of the brake drum, and improving the heat dissipation efficiency of the brake.

[0008] Wherein, the rotating shell also includes an air inlet plate and a cold air duct, the cold air duct is arranged on the peripheral side of the rotating shell and passes through the rotating shell, the air inlet plate is arranged on one side of the cold air duct, and the air inlet plate is arranged on the outside of the rotating shell.

[0009] When the vehicle is running, air enters the cold air duct along the air inlet plate, passes through the rotating shell through the cold air duct and enters the interior of the brake drum, while dissipating heat from the rotating shell.

[0010] Wherein, the fixed cover comprises an air intake shell and a hydraulic cylinder, the air intake shell is arranged on a side of the fixed cover away from the rotating shell, the hydraulic cylinder and the air intake shell are arranged on the same side, and the hydraulic cylinder is connected to the caliper.

[0011] When the car is running, outside air enters the interior of the brake drum through the air intake housing to dissipate heat from the caliper. The hydraulic cylinder is connected to the caliper to drive the caliper and control the working state of the caliper.

[0012] The fixed cover further comprises an air inlet and a mounting seat, wherein the air inlet is arranged on the inner side of the air inlet shell and passes through the fixed cover, and the mounting seat is arranged on one side of the hydraulic cylinder and fixedly connected to the hydraulic cylinder.

[0013] The air passes through the air inlet along the air intake housing and enters the interior of the brake drum to dissipate heat for the caliper. The fixed cover is mounted on the sub-frame through the mounting seat, and the mounting seat can fix the hydraulic cylinder.

[0014] Among them, the caliper includes two caliper arms, a spring and a brake cylinder. The brake cylinder is arranged on the side of the fixed cover close to the rotating shell and is fixedly connected to the fixed cover, and the brake cylinder is communicated with the hydraulic cylinder. The two caliper arms are symmetrically arranged on both sides of the brake cylinder, the upper ends of the two caliper arms are rotationally connected to the brake cylinder, the lower ends of the two caliper arms are rotationally connected to the fixed cover, and the two caliper arms are matched with the rotating shell. The spring is arranged between the two caliper arms, and the two ends of the spring are respectively fixedly connected to adjacent caliper arms.

[0015] During braking, the hydraulic cylinder is pressurized to drive the brake cylinder to work, so that the two clamp arms are spread apart, and the clamp arms rotate to contact the rotating shell, and the rotation speed of the rotating shell is reduced by friction, thereby achieving a braking effect.

[0016] Among them, the caliper arm includes a brake pad and a heat pipe, the brake pad is arranged on the side of the caliper arm away from the spring, and the brake pad cooperates with the side of the rotating shell, and the heat pipe is arranged on the side of the caliper arm close to the spring, and the heat pipe passes through the caliper arm and contacts the brake pad.

[0017] The brake pad is in direct contact with the rotating shell and achieves the braking effect by rubbing against the rotating shell. A large amount of heat is generated during the friction between the rotating shell and the brake pad. The heat pipe is in contact with the brake pad and conducts the heat of the brake pad to the other end of the heat pipe, and the heat is dissipated by the air flow in the brake drum.

[0018] A clamping drum brake of the present invention, when the rotating shell rotates synchronously with the wheel, the air flows rapidly along the surface of the blade, causing the air pressure at the air outlet to decrease, and the internal air of the rotating shell to be extracted, thereby accelerating the internal air circulation of the brake drum, improving the heat dissipation efficiency of the brake, and solving the problem that the existing drum brake is prone to overheating, which leads to a decrease in braking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The invention discloses an axonometric structural diagram of a clamping drum brake.

[0021] Figure 2 It is a front cross-sectional structural schematic diagram of a clamping drum brake provided by the present invention.

[0022] Figure 3 The invention is a schematic diagram of a side cross-sectional structure of a clamping drum brake provided by the invention.

[0023] Figure 4 The present invention is a schematic diagram of a top cross-sectional structure of a clamping drum brake provided by the present invention.

[0024] Figure 5 It is a partially enlarged schematic side view of a clamping drum brake provided by the present invention.

[0025] 10-brake drum, 11-rotating shell, 111-air outlet, 112-blade, 113-air inlet plate, 114-cold air duct, 115-V-ring, 116-water trough, 12-fixing cover, 121-hydraulic cylinder, 122-intake shell, 123-air inlet, 124-mounting seat, 125-watering pot, 126-nozzle, 20-caliper, 21-caliper arm, 211-heat pipe, 212-brake pad, 2121-V-groove, 2122-mounting hole, 22-spring, 23-brake cylinder. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] See also Figures 1 to 5 The present invention provides a clamping drum brake, comprising a brake drum 10 and a caliper 20, wherein the caliper 20 is arranged inside the brake drum 10 and is fixedly connected to the brake drum 10, wherein the brake drum 10 comprises a rotating shell 11 and a fixed cover 12, wherein the fixed cover 12 is arranged on one side of the rotating shell 11 and is rotatably connected to the rotating shell 11, wherein the caliper 20 is arranged on the inner side of the rotating shell 11 and is matched with the rotating shell 11, and wherein the caliper 20 is fixedly connected to the fixed cover 12;

[0029] The rotating shell 11 has an air outlet 111 and blades 112 . The air outlet 111 is disposed on a side of the rotating shell 11 away from the fixing cover 12 and passes through the rotating shell 11 . The blades 112 are disposed on the inner side of the air outlet 111 .

[0030] In this embodiment, the wheel is installed on the side of the rotating shell 11 away from the fixed cover 12, and the brake is installed on the subframe through the fixed cover 12. When the rotating shell 11 rotates synchronously with the wheel, the air flows rapidly along the surface of the blade 112, causing the air pressure at the air outlet 111 to decrease, and the internal air of the rotating shell 11 is drawn out, thereby accelerating the internal air circulation of the brake drum 10 and taking out the heat generated by the friction between the caliper 20 and the rotating shell 11 during braking, thereby improving the heat dissipation efficiency of the brake and solving the problem that the existing drum brake is prone to overheating, which leads to a decrease in braking efficiency.

[0031] Furthermore, the rotating shell 11 also includes an air inlet plate 113 and a cold air duct 114. The cold air duct 114 is arranged on the circumferential side of the rotating shell 11 and passes through the rotating shell 11. The air inlet plate 113 is arranged on one side of the cold air duct 114, and the air inlet plate 113 is arranged on the outer side of the rotating shell 11.

[0032] In this embodiment, when the vehicle is running, the outside air enters the cold air duct 114 along the air inlet plate 113 , enters the interior of the brake drum 10 through the cold air duct 114 , and dissipates the heat of the rotating shell 11 at the same time.

[0033] Furthermore, the rotating shell 11 also has a water collecting groove 116 and a V-shaped ring 115 . The water collecting groove 116 is arranged on the outer surface of the rotating shell 11 , and the V-shaped ring 115 is arranged on the inner side of the rotating shell 11 , and the V-shaped ring 115 cooperates with the brake pad 212 .

[0034] In this embodiment, most drum brakes are equipped with a water cooling system. The water collecting tank 116 can allow moisture to adhere to the outer surface of the rotating shell 11 to cool the rotating shell 11, thereby reducing the amount of water required for cooling. The V-ring 115 cooperates with the caliper 20 to increase the contact area between the caliper 20 and the rotating shell 11, thereby increasing the braking force and reducing the power required to drive the caliper 20 during braking.

[0035] Further, the fixed cover 12 includes an air intake shell 122 and a hydraulic cylinder 121, the air intake shell 122 is arranged on a side of the fixed cover 12 away from the rotating shell 11, the hydraulic cylinder 121 and the air intake shell 122 are arranged on the same side, and the hydraulic cylinder 121 is connected to the caliper 20;

[0036] The fixed cover 12 also has an air inlet 123 and a mounting seat 124 . The air inlet 123 is arranged on the inner side of the air inlet shell 122 and passes through the fixed cover 12 . The mounting seat 124 is arranged on one side of the hydraulic cylinder 121 and is fixedly connected to the hydraulic cylinder 121 .

[0037] In this embodiment, when the car is running, the outside air passes through the air inlet 123 along the air intake shell 122 and enters the interior of the brake drum 10 to dissipate heat to the caliper 20. The hydraulic cylinder 121 is connected to the caliper 20 to drive the caliper 20 and control the working state of the caliper 20. The fixing cover 12 is installed on the subframe through the mounting seat 124, and the mounting seat 124 can fix the hydraulic cylinder 121.

[0038] Furthermore, the fixed cover 12 also includes a watering pot 125 and a nozzle 126. The watering pot 125 is arranged on the side of the mounting seat 124 away from the hydraulic cylinder 121 and is fixedly connected to the mounting seat 124. The nozzle 126 is arranged on the side of the watering pot 125 close to the rotating shell 11 and is connected to the watering pot 125.

[0039] In this embodiment, the water spray pot 125 disperses the water flow into water droplets through the nozzle 126 and sprays the water on the surface of the rotating shell 11 . The water droplets adhere to the inner side of the water collecting tank 116 to cool the rotating shell 11 .

[0040] Further, the caliper 20 includes two caliper arms 21, a spring 22 and a brake cylinder 23, the brake cylinder 23 is arranged on the side of the fixed cover 12 close to the rotating shell 11, and is fixedly connected to the fixed cover 12, and the brake cylinder 23 is communicated with the hydraulic cylinder 121, the two caliper arms 21 are symmetrically arranged on both sides of the brake cylinder 23, the upper ends of the two caliper arms 21 are rotationally connected to the brake cylinder 23, the lower ends of the two caliper arms 21 are rotationally connected to the fixed cover 12, and the two caliper arms 21 are matched with the rotating shell 11, the spring 22 is arranged between the two caliper arms 21, and the two ends of the spring 22 are respectively fixedly connected to the adjacent caliper arms 21;

[0041] The caliper arm 21 includes a brake pad 212 and a heat pipe 211. The brake pad 212 is arranged on the side of the caliper arm 21 away from the spring 22, and the brake pad 212 cooperates with the side of the rotating shell 11. The heat pipe 211 is arranged on the side of the caliper arm 21 close to the spring 22, and the heat pipe 211 passes through the caliper arm 21 and contacts the brake pad 212.

[0042] In this embodiment, when braking, the driver steps on the brake pedal to pressurize the hydraulic cylinder 121, drives the brake cylinder 23 to work, spreads the two caliper arms 21, and the caliper arms 21 rotate. The brake pads 212 directly contact the rotating shell 11, and the rotation speed of the rotating shell 11 is reduced by friction, thereby achieving the braking effect. During the friction between the rotating shell 11 and the brake pads 212, a large amount of heat is generated. The heat pipe 211 contacts the brake pads 212, and the heat of the brake pads 212 is transferred to the other end of the heat pipe 211. The heat is dissipated by the air flow in the brake drum 10. The brake pedal is released, the pressure in the hydraulic cylinder 121 is reduced, and the caliper arms 21 are retracted and reset under the action of the springs 22, and separated from the rotating shell 11, and the braking state is released.

[0043] Furthermore, the brake pad 212 has a V-shaped groove 2121 and a mounting hole 2122. The V-shaped groove 2121 is arranged on the side of the brake pad 212 away from the caliper arm 21, and the V-shaped groove 2121 cooperates with the V-shaped ring 115. The mounting hole 2122 is arranged at the bottom of the V-shaped groove 2121 and passes through the V-shaped groove 2121.

[0044] In this embodiment, the bolt passes through the mounting hole 2122 to mount the brake pad 212 on the caliper arm 21. The caliper arm 21 is opened, and the V-groove 2121 fits with the V-ring 115, thereby increasing the contact area between the brake pad 212 and the rotating shell 11, thereby enhancing the braking force of the caliper 20. The depth of the V-groove 2121 is greater than the height of the V-ring 115. The air entering from the cold air duct 114 passes through the V-ring 115 and flows on the inner side of the V-groove 2121, thereby assisting in heat dissipation of the brake pad 212.

[0045] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A clamping drum brake, characterized in that: The clamping drum brake comprises a brake drum and a caliper, wherein the caliper is arranged inside the brake drum, and the brake drum comprises a rotating shell and a fixed cover, wherein the fixed cover is arranged on one side of the rotating shell and is rotatably connected to the rotating shell, and the caliper is arranged on the inner side of the rotating shell and cooperates with the rotating shell, and the caliper is fixedly connected to the fixed cover; The rotating shell has an air outlet and blades, the air outlet is arranged on a side of the rotating shell away from the fixed cover and passes through the rotating shell, and the blades are arranged on the inner side of the air outlet; The rotating shell further includes an air inlet plate and a cold air duct, wherein the cold air duct is arranged on the peripheral side of the rotating shell and penetrates the rotating shell, and the air inlet plate is arranged on one side of the cold air duct, and the air inlet plate is arranged on the outer side of the rotating shell; The caliper comprises two caliper arms, a spring and a brake cylinder. The brake cylinder is arranged on a side of the fixed cover close to the rotating shell and is fixedly connected to the fixed cover. The fixed cover comprises an air intake shell and a hydraulic cylinder, and the brake cylinder is communicated with the hydraulic cylinder. The two caliper arms are symmetrically arranged on both sides of the brake cylinder. The upper ends of the two caliper arms are rotatably connected to the brake cylinder, the lower ends of the two caliper arms are rotatably connected to the fixed cover, and the two caliper arms are matched with the rotating shell. The spring is arranged between the two caliper arms, and the two ends of the spring are fixedly connected to adjacent caliper arms respectively. The caliper arm comprises a brake pad and a heat pipe, wherein the brake pad is arranged on a side of the caliper arm away from the spring and matches with a side of the rotating shell, and the heat pipe is arranged on a side of the caliper arm close to the spring and penetrates the caliper arm and contacts with the brake pad; The rotating shell further comprises a water collecting groove and a V-shaped ring, wherein the water collecting groove is arranged on the outer surface of the rotating shell, the V-shaped ring is arranged on the inner side of the rotating shell, and the V-shaped ring cooperates with the brake pad; The brake pad has a V-shaped groove and a mounting hole, wherein the V-shaped groove is arranged on a side of the brake pad away from the caliper arm, and the V-shaped groove cooperates with the V-shaped ring, and the mounting hole is arranged at the bottom of the V-shaped groove and passes through the V-shaped groove; The fixed cover includes a watering pot and a nozzle, and the fixed cover also has an air inlet and a mounting seat. The watering pot is arranged on the side of the mounting seat away from the hydraulic cylinder and is fixedly connected to the mounting seat. The nozzle is arranged on the side of the watering pot close to the rotating shell and is connected to the watering pot.

2. The clamping drum brake according to claim 1, characterized in that The air intake housing is arranged on a side of the fixed cover away from the rotating housing, the hydraulic cylinder and the air intake housing are arranged on the same side, and the hydraulic cylinder is communicated with the caliper.

3. The clamping drum brake according to claim 2, characterized in that The air inlet is arranged on the inner side of the air inlet shell, and the air inlet passes through the fixed cover. The mounting seat is arranged on one side of the hydraulic cylinder and is fixedly connected to the hydraulic cylinder.

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