EMB and hydraulic double-brake system

Abstract

The utility model relates to the field of automobile brake, and discloses an EMB and hydraulic double-brake system which comprises a brake caliper device, and the brake caliper device comprises a motor brake module and a hydraulic brake module. That is to say, the braking system can use the motor and hydraulic pressure for braking. Under the condition that components such as a displacement sensor break down, when a user conducts pedal braking, the brake rod can move in the direction close to the air inlet port, the air inlet port is made to communicate with the air outlet port, and therefore boosting air can enter the liquid supply device from the air outlet port; thus, the liquid supply device outputs the brake liquid to assist the calipers, braking of the vehicle is achieved, even if parts such as the displacement sensor are out of order, pneumatic and hydraulic braking can be conducted through the redundant brake valve, and the braking effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking technology, specifically to an EMB and hydraulic dual braking system. Background Technology

[0002] The braking device is an important component of the vehicle braking system. The braking device mainly includes the brake lever and the displacement sensor. When the displacement sensor detects that the brake lever has reached the braking position, it sends braking information to the controller to control the brake motor to perform assisted braking. However, when the displacement sensor malfunctions, even if the brake lever has reached the braking position, it cannot effectively brake, resulting in brake failure. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model aims to provide an EMB and hydraulic dual braking system, which solves the technical problem of ineffective braking caused by the failure of components such as displacement sensors in existing braking devices.

[0004] To solve the above-mentioned technical problems, in a first aspect, this utility model provides an EMB and hydraulic dual braking system, comprising:

[0005] A brake caliper assembly, comprising an electric braking module and a hydraulic braking module;

[0006] The brake master cylinder assembly includes an air inlet port and an air outlet port;

[0007] An air supply device, wherein the air supply device is connected to the air inlet port;

[0008] A fluid supply device includes a fluid outlet, which is connected to the air outlet to output brake fluid from the fluid outlet under the air pressure of the air supply device.

[0009] When the air supply device provides air pressure to the liquid supply device through the brake master cylinder device, the liquid supply device is subjected to air pressure and provides hydraulic braking force to the brake caliper assembly, so that the brake caliper assembly is subjected to hydraulic pressure to lock the wheel and form a brake.

[0010] In one possible implementation, the master cylinder assembly includes a braking component, which includes a brake lever and a displacement sensor for detecting the displacement of the brake lever.

[0011] In one possible implementation, the air intake port is connected to the air outlet port when the brake lever moves toward the direction of the air intake port.

[0012] In one possible implementation, the EMB and hydraulic dual braking system further includes a controller, which is electrically connected to the displacement sensor and the motor braking module.

[0013] In one possible implementation, the brake caliper device includes:

[0014] A motor assembly, the motor assembly including an input shaft, a cycloidal pin reducer drivenly connected to the input shaft, and an output shaft connected to the cycloidal pin reducer;

[0015] A transmission assembly (200) is threaded to the outside of the output shaft;

[0016] A hydraulic piston, wherein a hydraulic chamber is formed inside the hydraulic piston, and the transmission assembly (200) is disposed inside the hydraulic chamber;

[0017] A caliper assembly includes a caliper seat, on which a first brake pad and a second brake pad are provided. A wheel lock-up space is formed between the first brake pad and the second brake pad. When the hydraulic piston applies a thrust toward the caliper seat, the hydraulic piston pushes the first brake pad toward the second brake pad to brake the vehicle.

[0018] In one possible implementation, the brake caliper further includes a cylinder with a fluid inlet hole that communicates with the hydraulic chamber. When hydraulic pressure is supplied to the hydraulic chamber through the fluid inlet hole, the hydraulic piston is pushed by the hydraulic force to move the first brake pad closer to the second brake pad to brake the vehicle.

[0019] In one possible implementation, the motor assembly further includes a motor housing and a stator and a rotor disposed within the motor housing, the rotor being fixedly connected to the input shaft.

[0020] In one possible implementation, the motor assembly further includes a magnet disposed at the end of the input shaft and an induction chip disposed within the motor housing, wherein the magnet and the induction chip form a magnetic encoder.

[0021] In one possible implementation, the motor housing is further provided with a bearing for supporting the input shaft.

[0022] Compared to existing technologies, the beneficial effects of this utility model are as follows: The EMB and hydraulic dual braking system of this application includes a brake caliper device, which comprises an electric motor braking module and a hydraulic braking module. That is, the braking system of this application can use both electric motor and hydraulic pressure for braking. Furthermore, in the event of a malfunction in components such as the displacement sensor, when the user applies the foot brake, the brake lever can move towards the air intake port, connecting the air intake port and the air outlet port. This allows assist air to enter the fluid supply device from the air outlet port, which in turn outputs brake fluid to assist the caliper, thereby achieving vehicle braking. Even if components such as the displacement sensor malfunction, pneumatic and hydraulic braking can still be achieved through redundant brake valves, thus maintaining braking effectiveness. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the EMB and hydraulic dual braking system in one embodiment of this application;

[0024] Figure 2 This is a cross-sectional view of a brake master cylinder assembly according to an embodiment of this application;

[0025] Figure 3 This is a cross-sectional view of a brake caliper device in one embodiment of this application.

[0026] Figure 4 This is a perspective view of a brake caliper device in one embodiment of this application. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Please see the appendix Figure 1-4 This utility model provides an EMB and hydraulic dual braking system, including a brake caliper device 010, a brake master cylinder device 600, an air supply device 700, a hydraulic supply device 800, and a controller 900.

[0031] The brake caliper assembly 010 includes an electric motor braking module and a hydraulic braking module. The master cylinder assembly 600 includes an air inlet port 610 and an air outlet port 620. The air supply device 700 is connected to the air inlet port 610. The fluid supply device 800 includes a fluid outlet 810, which is connected to the air outlet port 620, to output brake fluid from the outlet port 810 under the air pressure of the air supply device 700. When the air supply device 700 provides air pressure to the fluid supply device 800 through the master cylinder assembly 600, the fluid supply device 800, under the action of air pressure, provides hydraulic braking force to the brake caliper assembly, causing the brake caliper assembly to lock the wheel under hydraulic pressure and thus form a brake.

[0032] Specifically, the structure of the air supply device 700 that outputs air pressure to enable the liquid supply device 800 to output hydraulic pressure can be varied, for example, the output of brake fluid can be driven by an air pressure piston.

[0033] In one embodiment, such as Figure 1 As shown, the brake master cylinder device 600 includes a brake assembly 630, which includes a brake lever 631 and a displacement sensor (not shown). The displacement sensor is used to detect the displacement of the brake lever 631. The controller 900 is electrically connected to the displacement sensor and the motor brake module. When the brake lever 631 moves towards the air intake port 610, the air intake port 610 communicates with the air outlet port 620.

[0034] It should be noted that the structure in which the air intake port 610 and the air outlet port 620 are connected by the movement of the brake lever 631 is existing technology, and this application does not make any improvements to this part.

[0035] In one embodiment, such as Figure 3-4As shown, the brake caliper device 010 includes a motor assembly 100, a transmission kit 200, a hydraulic piston 300, and a caliper assembly 400.

[0036] The motor assembly 100 includes an input shaft 110, a cycloidal pin reducer 120 connected to the input shaft 110, and an output shaft 130 connected to the cycloidal pin reducer 120. A transmission kit 200 is threaded onto the outside of the output shaft 130. A hydraulic chamber 310 is formed within the hydraulic piston 300, and the transmission kit 200 is disposed within the hydraulic chamber 310. The caliper assembly 400 includes a caliper seat 410, on which a first brake pad 420 and a second brake pad 430 are provided. A wheel lock-up space is formed between the first brake pad 420 and the second brake pad 430. When the hydraulic piston 300 applies a thrust towards the caliper seat 410, the hydraulic piston 300 pushes the first brake pad 420 towards the second brake pad 430 to brake the vehicle. Thus, the rotation of the motor or the supply of hydraulic pressure to the hydraulic chamber 310 drives the hydraulic piston 300 to move, thereby achieving braking.

[0037] It should be noted that both the first brake pad 420 and the second brake pad 430 are made of wear-resistant material. The cycloidal pin reducer 120 adopts the existing cycloidal pin reducer device, and this application does not make any improvements to the cycloidal pin reducer 120.

[0038] In one embodiment, the brake caliper of this application further includes a cylinder 500, on which a fluid inlet 510 is provided, the fluid inlet 510 communicating with the hydraulic chamber 310. When hydraulic pressure is supplied to the hydraulic chamber 310 through the fluid inlet 510, the hydraulic piston 300 is pushed by the hydraulic force to move the first brake pad 420 toward the second brake pad 430 to brake the vehicle.

[0039] Thus, the fluid supply device 800 can supply hydraulic pressure to the hydraulic chamber 310 through the fluid inlet 510 to drive the hydraulic piston 300 to move, thereby pushing the first brake pad 420 to move closer to the second brake pad 430 to brake the vehicle.

[0040] In one embodiment, the motor assembly 100 further includes a motor housing 140 and a stator 150, a rotor 160, and a bearing 190 for supporting an input shaft 110 disposed within the motor housing 140. The rotor 160 is fixedly connected to the input shaft 110. When the stator 150 is energized, it can drive the rotor 160 to rotate, thereby driving the input shaft 110 to rotate. When the input shaft 110 rotates, it is decelerated by a cycloidal pin reducer 120 and the rotational motion is output through an output shaft 130. When the output shaft 130 rotates at a lower speed, it drives the transmission assembly 200 to perform linear motion within the hydraulic chamber 310 through threaded transmission.

[0041] In another embodiment, the motor assembly 100 further includes a magnet 170 disposed at the end of the input shaft 110 and a sensing chip 180 disposed within the motor housing 140, wherein the magnet 170 and the sensing chip 180 form a magnetic encoder. The magnetic encoder is used to detect the rotation angle of the input shaft 110, thereby providing data for controlling parameters such as the motor speed.

[0042] In one application scenario, when the foot pedal is pressed, the displacement sensor detects the movement of the brake lever 631, thereby controlling the motor assembly 100 to operate. When the motor rotates, it drives the output shaft 130 to rotate. The rotation of the output shaft 130 drives the transmission assembly 200 to move linearly within the hydraulic chamber 310 via a threaded drive. For example, when the motor rotates forward, the output shaft 130 drives the transmission assembly 200 to move closer to the caliper, thereby pushing the hydraulic piston 300 to move closer to the caliper, thus pushing the first brake pad 420 closer to the second brake pad 430, thereby braking the vehicle. When the motor rotates in reverse, the hydraulic piston 300 releases the first brake pad 420 to release the brake.

[0043] In another application scenario, when the pedal is pressed, the motor assembly 100 cannot receive commands to operate due to a malfunction of the displacement sensor. At this time, the brake lever 631 moves towards the air intake port 610, connecting the air intake port 610 with the air outlet port 620. Simultaneously, the air supply device 700 provides air pressure to the fluid supply device 800, causing the fluid supply device 800 to output brake fluid. This brake fluid then enters the brake caliper assembly 010, enabling the brake caliper assembly 010 to apply brakes under hydraulic pressure.

[0044] Based on this, the braking system of this application can use both electric motors and hydraulic pressure for braking. Furthermore, in the event of a malfunction in components such as the displacement sensor, when the user applies the foot brake, the brake lever can move towards the air intake port, connecting the air intake and exhaust ports. This allows assist air to enter the fluid supply device from the exhaust port, which in turn outputs brake fluid to assist the calipers, thus achieving vehicle braking. Even if components such as the displacement sensor fail, pneumatic and hydraulic braking can be achieved through redundant brake valves, thereby maintaining braking effectiveness.

[0045] Obviously, the above are only preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An EMB and hydraulic dual brake system, characterized by, The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system.

2. The EMB and hydraulic dual brake system of claim 1, wherein, The application relates to an EMB and hydraulic double braking system.

3. The EMB and hydraulic dual brake system of claim 2, wherein, The application relates to an EMB and hydraulic double braking system.

4. The EMB and hydraulic dual brake system of claim 2, wherein, The application relates to an EMB and hydraulic double braking system.

5. The EMB and hydraulic dual brake system of claim 1, wherein, The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. The application relates to an EMB and hydraulic double braking system. 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The EMB and hydraulic dual brake system of claim 5, wherein, The brake caliper further comprises a cylinder (500) having a liquid inlet hole (510) formed therein, the liquid inlet hole (510) being in communication with the hydraulic chamber (310); when the hydraulic chamber (310) is provided with hydraulic pressure through the liquid inlet hole (510), the hydraulic piston (300) is pushed by the hydraulic thrust force to push the first brake pad (420) to move towards the second brake pad (430) to brake the automobile.

7. The EMB and hydraulic dual brake system of claim 5, wherein, The motor assembly (100) further comprises a motor housing (140), and a stator (150) and a rotor (160) arranged in the motor housing (140), wherein the rotor (160) is fixedly connected with the input shaft (110).

8. The EMB and hydraulic dual brake system of claim 7, wherein, The motor assembly (100) further comprises a magnet (170) arranged at the end of the input shaft (110), and an induction chip (180) arranged in the motor housing (140), wherein the magnet (170) and the induction chip (180) form a magnetic encoder.

9. The EMB and hydraulic dual brake system of claim 7, wherein, The motor housing (140) further comprises a bearing (190) for supporting the input shaft (110).

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