Disc brake cooling device and method and vehicle

Abstract

The invention discloses a disc brake cooling device and method and a vehicle, and relates to the technical field of automobile manufacturing, the disc brake cooling device comprises an air cooling device and a water cooling device, the air cooling device comprises a friction assembly and a mechanical air pump, the mechanical air pump is connected with the friction assembly, and an air outlet pipe connected with the mechanical air pump is led to a ventilation disc interlayer; when the floating clamp acts, the mechanical air pump is driven by the friction assembly, and atomized water drops blowing to an interlayer of the ventilation disc are formed at an outlet of the air outlet pipe. The water cooling device comprises a temperature sensor and a water tank, the water tank is provided with a water pump, and the water pump is connected with the air outlet pipe; the temperature sensor is used for detecting the braking temperature so that when the braking temperature is higher than a set threshold value, the air cooling mode can be switched to the air cooling and water cooling combined mode. The brake disc can be cooled in an air cooling mode or an air cooling and water cooling combined mode, heat diffusion can be accelerated when the temperature is too high, and the cooling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a disc brake cooling device, method and vehicle. Background Art

[0002] High temperatures are generated during the braking process, which can cause the friction coefficient of the brake pad to drop significantly. The reduction in the friction coefficient will directly affect the braking ability, causing it to gradually decline, thereby weakening the vehicle's control, and in severe cases may even cause brake failure. At the same time, nearby components that are in a high temperature environment for a long time will also face serious safety hazards, which may not only cause failures, but also significantly shorten the overall service life of the vehicle. Therefore, higher requirements are placed on the vehicle's braking system, among which the thermal capacity and heat dissipation of the brake disc are also key points that the automotive field has always paid attention to.

[0003] The Chinese patent (publication number CN107554498A, published on January 9, 2018) discloses an electric disc brake cooling device and method, including a housing and a brake disc arranged in the housing, the housing is provided with a telescopic device connected to a controller, the telescopic device is connected to a friction assembly, the friction assembly includes a conical friction wheel and a steering mechanism, the rotating device is provided with a fan cone friction pointing to one side of the brake disc, and the rotating device and the fan are driven to rotate by the steering mechanism and the transmission mechanism. The air cooling system uses the rotation of the wheel to drive the fan to blow air to the brake disc to achieve air cooling; but there are the following defects:

[0004] 1) The thermal decay problem of passenger cars now occurs in the front disc. Most front discs are ventilated discs (double-layer discs), and the air blowing has a cooling effect only on one side; 2) The fan blows directly on the brake disc, and there is no air diversion space, so the cooling effect will be greatly weakened; 3) When the temperature is high, the air cooling effect is less efficient; 4) The telescopic device needs to be equipped with a controller, which will increase the cost. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a disc brake cooling device, method and vehicle, which can adopt air cooling mode or air cooling and water cooling combined mode to cool the brake disc, and can accelerate heat diffusion when the temperature is too high to improve the cooling efficiency.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a disc brake cooling device, comprising an air cooling device and a water cooling device, wherein the air cooling device comprises a friction assembly and a mechanical air pump, wherein the mechanical air pump is connected to the friction assembly, and an air outlet pipe connected to the mechanical air pump is led to the interlayer of the ventilated disc; when the floating caliper is actuated, the mechanical air pump is driven by the friction assembly to form atomized water droplets at the outlet of the air outlet pipe that are blown toward the interlayer of the ventilated disc;

[0008] The water cooling device includes a temperature sensor and a water tank, the water tank is equipped with a water pump, and the water pump is connected to the outlet pipe; the temperature sensor is used to detect the brake temperature, so as to switch the air cooling mode to the air cooling and water cooling combined mode when the brake temperature is higher than a set threshold.

[0009] As a further implementation, the air cooling device further includes a base, the base is connected to a floating caliper via a connecting rod, and when the floating caliper is actuated, the friction assembly is driven to move toward the side where the brake disc is located.

[0010] As a further implementation, the friction assembly includes a conical friction wheel, a steering mechanism and a transmission mechanism, the conical friction wheel is connected to one end of the steering mechanism, and the other end of the steering mechanism is connected to a mechanical air pump through the transmission mechanism;

[0011] When the friction assembly moves toward the side where the brake disc is located, the conical friction wheel is brought into contact with the brake disc.

[0012] As a further implementation, the temperature sensor and the friction assembly are mounted on a base.

[0013] As a further implementation method, the water tank is arranged on one side of the friction assembly, the water pump is installed on the top of the water tank, and the water pump is connected to the air outlet pipe through the water outlet pipe.

[0014] As a further implementation, a nozzle is installed at the outlet of the air outlet pipe.

[0015] In a second aspect, an embodiment of the present invention further provides a working method of a disc brake cooling device, including an air cooling mode and an air cooling and water cooling combined mode, wherein:

[0016] The air cooling mode is as follows: during the vehicle braking process, the floating caliper moves to drive the friction assembly to move to the side where the brake disc is located, and the friction energy is used to drive the mechanical air pump to work, so that the air outlet pipe blows the gas to the interlayer of the ventilation disc;

[0017] The air-cooling and water-cooling combined mode is as follows: during vehicle braking, the floating caliper is actuated to drive the friction assembly to move toward the side where the brake disc is located, and friction energy is used to drive the mechanical air pump to work; when the brake temperature exceeds the set threshold, the water pump starts to work, causing the water in the water tank to flow into the outlet pipe, forming atomized water droplets at the outlet and blowing toward the ventilation disc interlayer.

[0018] As a further implementation, when the temperature sensor detects that the brake temperature exceeds 600° C., the water pump starts.

[0019] As a further implementation method, the mechanical air pump is driven to work by the contact between the conical friction wheel and the inner chamfered surface of the brake disc.

[0020] In a third aspect, an embodiment of the present invention further provides a vehicle equipped with the above-mentioned disc brake cooling device.

[0021] The beneficial effects of the present invention are as follows:

[0022] (1) The present invention includes an air cooling device and a water cooling device. When the wheel brakes, the air cooling device can be started to blow air to cool the interlayer of the ventilated disc. The blown air flows out through the space between the double-layer discs to form a good ventilation effect. When the temperature is too high, the water pump starts to work, that is, a combined air cooling and water cooling mode is adopted to avoid the problem of high temperature in the braking system affecting driving safety and service life. At the same time, it also plays a role of auxiliary braking, reducing the load of the main braking system to a certain extent, which is beneficial to extending the service life of the braking system. And it does not increase the cost.

[0023] (2) The air cooling device of the present invention includes a friction component and a mechanical air pump. The friction energy during braking is used to start the mechanical air pump. Air can be blown to cool the brake disc each time the brake is applied, thereby saving energy. When the continuous braking temperature exceeds a set threshold, a water cooling mode is introduced, and atomized water droplets are formed at the nozzle through a common air outlet pipe to accelerate heat diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] Figure 1 is a schematic structural diagram of a disc brake cooling device according to one or more embodiments of the present invention;

[0026] Figure 2 is a schematic diagram of installing a temperature sensor according to one or more embodiments of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of an air cooling device according to one or more embodiments of the present invention.

[0028] Among them, 1. base, 2. connecting rod, 3. friction assembly, 31. conical friction wheel, 32. steering mechanism, 4. transmission mechanism, 5. mechanical air pump, 51. air outlet pipe, 52. nozzle, 6. brake disc, 7. water pump, 8. water tank, 9. temperature sensor, and 10. water outlet pipe. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0030] Embodiment 1:

[0031] This embodiment provides a disc brake cooling device, including an air cooling device and a water cooling device. The air cooling device can work alone, that is, an air cooling mode; it can also work in conjunction with the water cooling device, that is, an air cooling and water cooling combined mode.

[0032] like Figure 1-Figure 3 As shown, the air cooling device and the water cooling device are arranged on one side of the brake disc 6, and the air cooling device includes a base 1, a friction assembly 3 and a mechanical air pump 5. The base 1 is connected to the floating caliper through a connecting rod 2, and the friction assembly 3 is fixed to the upper side of the chassis. When the floating disc moves, the friction assembly 3 moves toward the side where the brake disc 6 is located through the connecting action of the connecting rod 2 until the friction assembly 3 contacts the brake disc 6, thereby utilizing friction energy to drive the mechanical air pump 5 to work.

[0033] like Figure 3 As shown, the friction assembly 3 includes a conical friction wheel 31, a steering mechanism 32 and a transmission mechanism 4. The conical friction wheel 31 is installed at one end of the steering mechanism 32, and the other end of the steering mechanism 32 is connected to the transmission mechanism 4. The transmission mechanism 4 is connected to the mechanical air pump 5. During the vehicle braking process, the floating caliper is actuated to drive the friction assembly 3 to move toward the side where the brake disc 6 is located, the conical friction wheel 31 contacts the inner chamfered surface of the brake disc 6, and the conical friction wheel 31 rotates, driving the mechanical air pump 5 to work through the steering mechanism 32 and the transmission mechanism 4.

[0034] The steering mechanism 32 and the transmission mechanism 4 can be selected according to actual conditions. For example, the steering mechanism 32 adopts a bevel gear mechanism, and the transmission mechanism 4 adopts a belt transmission mechanism 4 or a chain transmission mechanism 4. The mechanical air pump 5 is divided into a piston air pump, a screw air pump, a diaphragm air pump and a rotary vane air pump. The form of the mechanical air pump 5 and the transmission mechanism 4 can be selected accordingly. For example, when the transmission mechanism 4 is a belt transmission mechanism 4 or a chain transmission mechanism 4, the mechanical air pump 5 can adopt a rotary vane air pump or a screw air pump.

[0035] The mechanical water pump 7 is connected to one end of the air outlet pipe 51, and a nozzle 52 is installed at the other end of the air outlet pipe 51, and the nozzle 52 corresponds to the interlayer of the ventilation disc; when the mechanical water pump 7 is working, the gas can be blown to the interlayer of the ventilation disc through the air outlet pipe 51 and the nozzle 52, thereby achieving air cooling and solving the problem that the fan directly blows the brake disc and there is no guide space for the gas, which affects the cooling effect.

[0036] like Figure 1 and Figure 2As shown, the water cooling device includes a water tank 8, a water pump 7 and a temperature sensor 9. In order to facilitate the detection of the brake temperature, the temperature sensor 9 is installed on the base 1; the water tank 8 is arranged on one side of the friction component 3, the water pump 7 is installed on the top of the water tank 8, one end of the water outlet pipe 10 is connected to the water pump 7, and the other end is connected to the air outlet pipe 51; arranging the water pump 7 on the upper side of the water tank 8 can not only shorten the length of the water outlet pipe 10, but also avoid the pipeline being too long and difficult to arrange in a limited space; it can also timely associate the water cooling mode with the air cooling mode when the temperature sensor 9 detects that the temperature is too high.

[0037] Since the water outlet pipe 10 is connected to the air outlet pipe 51, the water cooling device and the air cooling device share one outlet. When the temperature is too high, the water cooling mode is introduced, that is, water is added on the basis of ventilation to form atomized water droplets at the nozzle 52 to accelerate heat diffusion.

[0038] In this embodiment, when the wheel is braked, the air cooling mode can be activated to cool down the interlayer of the ventilation disc by blowing air, and the blown air flows out through the space between the double-layer discs to form a good ventilation effect; the mechanical air pump 5 recycles the friction energy during braking, and can cool down the brake disc 6 by blowing air every time the brake is applied. When the temperature is too high, the water pump 7 starts to work, forming an air-cooling and water-cooling combined mode, avoiding the problem of high temperature in the brake system affecting driving safety and service life, and also plays the role of auxiliary braking, reducing the load of the main brake system to a certain extent, which is conducive to extending the service life of the brake system.

[0039] Embodiment 2:

[0040] This embodiment provides a working method of a disc brake cooling device. The disc brake cooling device described in Embodiment 1 may be used in an air cooling mode or an air cooling and water cooling combined mode. Specifically:

[0041] Air cooling mode: during vehicle braking, the floating caliper moves, and the connecting rod 2 connected to the floating caliper drives the friction assembly 3 to move toward the side where the brake disc 6 is located. The conical friction wheel 31 contacts the inner chamfered surface of the brake disc 6, causing the conical friction wheel 31 to rotate, and drives the mechanical air pump 5 to work through the steering mechanism 32 and the transmission mechanism 4; the air outlet pipe 51 connected to the mechanical air pump 5 leads the gas to the ventilation disc interlayer to blow air to cool the brake disc 6.

[0042] Air-cooling and water-cooling combined mode: During vehicle braking, the floating caliper is actuated, and the connecting rod 2 connected to the floating caliper drives the friction assembly 3 to move toward the side where the brake disc 6 is located. The conical friction wheel 31 contacts the inner chamfered surface of the brake disc 6, causing the conical friction wheel 31 to rotate, and drives the mechanical air pump 5 to work through the steering mechanism 32 and the transmission mechanism 4; when the temperature sensor 9 detects that the brake temperature exceeds 600°C, the water pump 7 starts to work, and the water in the water tank 8 is introduced into the air outlet pipe 51 through the water outlet pipe 10, and atomized water droplets are formed at the nozzle 52, which are blown toward the ventilation disc interlayer to cool the brake disc 6.

[0043] In this embodiment, when the brake temperature is lower than a set threshold (for example, 600°C), only the air cooling mode is used to cool the brake disc 6. When the temperature is higher than the set threshold, a combined air cooling and water cooling mode is used, which can achieve effective cooling of the brake disc 6 on the basis of energy saving.

[0044] Embodiment 3:

[0045] This embodiment provides a vehicle equipped with the disc brake cooling device described in Embodiment 1.

[0046] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A disc brake cooling device, characterized in that: It comprises an air cooling device and a water cooling device, wherein the air cooling device comprises a friction assembly and a mechanical air pump, wherein the mechanical air pump is connected to the friction assembly, and an air outlet pipe connected to the mechanical air pump is led to the interlayer of the ventilation disk; when the floating clamp is in motion, the mechanical air pump is driven by the friction assembly to form atomized water droplets at the outlet of the air outlet pipe that are blown toward the interlayer of the ventilation disk; The water cooling device includes a temperature sensor and a water tank, the water tank is equipped with a water pump, and the water pump is connected to the outlet pipe; the temperature sensor is used to detect the brake temperature, so as to switch the air cooling mode to the air cooling and water cooling combined mode when the brake temperature is higher than a set threshold.

2. A disc brake cooling device according to claim 1, characterized in that: The air cooling device also includes a base, and the base is connected to a floating caliper through a connecting rod. When the floating caliper is in motion, it drives the friction assembly to move toward the side where the brake disc is located.

3. A disc brake cooling device according to claim 2, characterized in that: The friction assembly includes a conical friction wheel, a steering mechanism and a transmission mechanism, the conical friction wheel is connected to one end of the steering mechanism, and the other end of the steering mechanism is connected to a mechanical air pump through the transmission mechanism; When the friction assembly moves toward the side where the brake disc is located, the conical friction wheel is brought into contact with the brake disc.

4. A disc brake cooling device according to claim 2, characterized in that: The temperature sensor and the friction assembly are mounted on the base.

5. The disc brake cooling device according to claim 1, characterized in that: The water tank is arranged on one side of the friction component, the water pump is installed on the top of the water tank, and the water pump is connected with the air outlet pipe through the water outlet pipe.

6. A disc brake cooling device according to claim 1 or 5, characterized in that: The outlet of the air outlet pipe is provided with a nozzle.

7. A working method of a disc brake cooling device according to any one of claims 1 to 6, characterized in that: It includes air cooling mode and air cooling and water cooling combined mode, where: The air cooling mode is as follows: during the vehicle braking process, the floating caliper moves to drive the friction assembly to move to the side where the brake disc is located, and the friction energy is used to drive the mechanical air pump to work, so that the air outlet pipe blows the gas to the interlayer of the ventilation disc; The air-cooling and water-cooling combined mode is as follows: during vehicle braking, the floating caliper is actuated to drive the friction assembly to move toward the side where the brake disc is located, and friction energy is used to drive the mechanical air pump to work; when the brake temperature exceeds the set threshold, the water pump starts to work, causing the water in the water tank to flow into the outlet pipe, forming atomized water droplets at the outlet and blowing toward the ventilation disc interlayer.

8. The working method of the disc brake cooling device according to claim 7, characterized in that: When the temperature sensor detects that the brake temperature exceeds 600° C., the water pump starts.

9. The working method of the disc brake cooling device according to claim 7, characterized in that: The mechanical air pump is driven to work by the contact between the conical friction wheel and the inner chamfered surface of the brake disc.

10. A vehicle, characterized in that: A disc brake cooling device as described in any one of claims 1-6 is installed.

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