Micro-stroke pedal for new energy vehicle

Abstract

The invention belongs to the technical field of brake-by-wire systems, and particularly relates to a micro-stroke pedal for a new energy vehicle, which comprises a pedal surface, a spring guide seat, a pedal shell, a pedal base and a pedal stroke sensing assembly, the pedal face is arranged on the top face of the spring guide seat, the spring guide seat is arranged in the pedal shell in a sliding mode, the pedal base is arranged on the bottom face of the pedal shell, and the pedal stroke sensing assembly is arranged in the pedal shell and used for sensing the stroke of the pedal face. A spring assembly is arranged at the bottom of the spring guide seat, the other end of the spring assembly is connected with a spring supporting seat, and the spring supporting seat is arranged in the pedal shell in a sliding mode. According to the micro-stroke pedal for the new energy vehicle, the stroke of the micro-stroke pedal is only the partial length of the spring guide seat, the stepping stroke is short, and therefore the micro-stroke pedal is small in size, fast in response, high in precision and more suitable for the use field of low-frequency automatic driving.

Description

Technical Field

[0001] The present invention belongs to the technical field of wire control braking systems, and particularly relates to a micro-travel pedal for new energy vehicles. Background Art

[0002] An electronic pedal is a braking pedal device controlled by electronic signals. Different from traditional hydraulic braking pedals and mechanical braking pedals, it uses electronic signals to achieve precise control. When the driver steps on the pedal, the pedal position sensor converts information such as the travel and force of the pedal into electrical signals and transmits them to the vehicle's electronic control unit (ECU). The ECU calculates the required braking force based on these signals and controls the brake to perform corresponding braking actions.

[0003] The electronic pedal recognizes the driver's intention through the movement of the pedal. The pedal processes and sends the pedal signal to the domain control or the vehicle processor, and the vehicle brakes the brake execution unit according to the signal to meet the driver's deceleration expectation. The existing brake pedal has a cantilever structure and occupies a large size. With the gradual popularization of new energy vehicles and autonomous driving, the usage frequency of the pedal will gradually decrease. Most of the existing electronic pedals are assembled in the front enclosure area, occupying a large space and being more suitable for high-frequency occasions that meet the needs of complex human-machine. Summary of the Invention

[0004] Object of the Invention: To overcome the above deficiencies, the present invention provides a micro-travel pedal for new energy vehicles, which occupies less space and is lighter in weight, leaving more space for the engine compartment, and at the same time has the advantages of short travel, fast response, high precision, etc.

[0005] Technical Solution: To achieve the above object, the present invention provides a micro-travel pedal for new energy vehicles, including a pedal surface, a spring guide seat, a pedal housing, a pedal base, and a pedal travel sensing assembly; The pedal surface is arranged on the top surface of the spring guide seat, the spring guide seat is slidably arranged in the pedal housing, the pedal base is arranged on the bottom surface of the pedal housing, and the pedal travel sensing assembly is arranged in the pedal housing for sensing the travel of the pedal surface; A spring assembly is arranged at the bottom of the spring guide seat, the other end of the spring assembly is connected with a spring support seat, and the spring support seat is slidably arranged in the pedal housing.

[0006] Further, the pedal travel sensing assembly includes a pressure sensor, and the pressure sensor is arranged between the pedal base and the spring support seat. The pressure sensor can transmit the pressure information generated when the pedal surface moves downward to the connector through the PCB board.

[0007] Further, the pedal stroke sensing assembly further includes a sensor and a magnet. The sensor is disposed on the pedal base, and the magnet is embedded in the spring guide seat. The magnet moves downward with the spring guide seat, so that a magnetic field change occurs between the magnet and the sensor, and the sensor transmits an electrical signal to the PCB board.

[0008] Further, the surface of the pedal surface is provided with anti-slip lines, and a connecting column is provided at the bottom thereof. A threaded hole is provided along the radial direction of the connecting column. A plugging hole is provided on the spring guide seat, and a through hole communicating with the plugging hole is provided on the side surface of the spring guide seat. The connecting column is plugged in the plugging hole and fixed by a bolt.

[0009] Further, side ears are provided on both sides of the spring guide seat, buffer pads are provided on the side ears, and a groove capable of accommodating the sensor is further provided on the spring guide seat. The buffer pads play a good buffering role between the spring guide seat and the spring support seat, and between the spring guide seat and the pedal housing.

[0010] Further, a rectangular through hole having the same size as the sensor is provided on the spring support seat, and the sensor is disposed through the rectangular through hole.

[0011] Further, mounting side ears are provided on both sides of the pedal housing, and the pedal base is connected to the pedal housing by mounting screws. The pedal housing is mounted on the vehicle through the mounting side ears.

[0012] Further, a PCB board and a connector are further included. The PCB board is disposed on the pressing plate base, the upper end of the connector is embedded in the pedal base, and the connector is connected to the PCB board. After the PCB board processes the signals of the pedal pressure sensor and the sensor, the signals are transmitted to the connector, and the connector is connected to the main control system of the vehicle. The main control system performs braking on the braking execution unit according to the signals.

[0013] As can be seen from the above technical solutions, the present invention has the following beneficial effects: 1. The present invention provides a micro-stroke pedal for new energy vehicles, which has a compact structure and occupies less space in the cockpit; it has the characteristics of light weight, can realize diversified arrangement positions and methods, meets the scenario requirements of autonomous driving, and can be arranged as an emergency switch in multiple places.

[0014] 2. For the micro-stroke pedal for new energy vehicles of the present invention, its stroke is only a part of the length of the spring guide seat, the stepping stroke is short, so it has a small volume, fast response, high precision, and is more suitable for the usage scenarios of low-frequency autonomous driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of a micro-stroke pedal for new energy vehicles according to the present invention; Figure 2The external structure diagram of a micro - travel pedal for new energy vehicles according to the present invention; Figure 3 The top view of a micro - travel pedal for new energy vehicles according to the present invention; Figure 4 For Figure 3 The sectional view taken along line B - B in Figure 5 For Figure 3 The sectional view taken along line C - C in

[0016] In the figure: 1 - pedal surface, 2 - spring guide seat, 3 - bolt, 4 - buffer pad, 5 - spring assembly, 6 - magnet, 7 - sensor, 8 - pressure sensor, 9 - spring support seat, 10 - pedal housing, 11 - pedal base, 12 - PCB board, 13 - mounting screw, 14 - connector. Specific embodiments

[0017] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] Embodiment 1: As Figures 1-5 shown: A micro - travel pedal for new energy vehicles includes a pedal surface 1, a spring guide seat 2, a pedal housing 10, a pedal base 11, and a pedal stroke sensing assembly; The pedal surface 1 is disposed on the top surface of the spring guide seat 2, the spring guide seat 2 is slidably disposed in the pedal housing 10, the pedal base 11 is disposed on the bottom surface of the pedal housing 10, and the pedal stroke sensing assembly is disposed in the pedal housing 10 for sensing the stroke of the pedal surface 1; The bottom of the spring guide seat 2 is provided with a spring assembly 5, the other end of the spring assembly 5 is connected to a spring support seat 9, and the spring support seat 9 is slidably disposed in the pedal housing 10.

[0019] Among them, the pedal stroke sensing assembly includes a pressure sensor 8, and the pressure sensor 8 is disposed between the pedal base 11 and the spring support seat 9. The pressure sensor 8 is disposed on the pedal base 11. When the driver steps on the pedal surface 1, the pressure is transmitted to the pressure sensor 8 through the spring guide seat 2 and the spring assembly 5, and then the stepping pressure is detected.

[0020] Among them, the surface of the pedal surface 1 is provided with anti - slip lines, and a connecting column 101 is provided at its bottom. A threaded hole is provided along the radial direction of the connecting column 101. The spring guide seat 2 is provided with a plug - in hole, and a through - hole communicating with the plug - in hole is provided on the side surface of the spring guide seat 2. The connecting column 101 is plugged into the plug - in hole and fixed by a bolt 3. The pedal surface 1 is directly plugged into the spring guide seat 2 and fixed by a bolt 3, which not only reduces the overall volume but also can reduce the stepping stroke.

[0021] In addition, mounting side ears are provided on both sides of the pedal housing 10, and the pedal base 11 and the pedal housing 10 are connected by mounting screws 13.

[0022] Specifically, it further includes a PCB board 12 and a connector 14. The PCB board 12 is arranged on the platen base 11. The upper end of the connector 14 is embedded in the pedal base 11, and the connector 14 is connected to the PCB board 12.

[0023] In this embodiment, when the pedal surface 1 is stepped on, the pedal force is transmitted to the pressure sensor 8 through the spring assembly 5. The pressure sensor 8 recognizes that the pedal force transmits an electrical signal to the connector 14 through the PCB board 12, and the main control system connected to the connector 14 completes the sending of the braking instruction.

[0024] Embodiment 2: Based on Embodiment 1, as Figure 5 shown, the pedal travel sensing assembly in this embodiment further includes a sensor 7 and a magnet 6. The sensor 7 is arranged on the pedal base 11, and the magnet 6 is embedded in the spring guide seat 2. The sensor 7 in this embodiment is preferably a Hall effect sensor.

[0025] Wherein, side ears are provided on both sides of the spring guide seat 2, buffer pads 4 are provided on the side ears, and a groove for accommodating the sensor 7 is also provided on the spring guide seat 2. The spring guide seat 2 is matched with the inner top surface of the pedal housing 10 through the side ears on both sides to realize the upward limit of the spring guide seat 2. At the same time, buffer pads are installed on the side ears. When the pedal surface 1 is stepped on or returned, the buffer pad 4 contacts the pedal housing 10 and the spring support seat 9, avoiding the impact damage or noise generation between the spring guide seat 2 and the pedal housing 10 and the spring support seat 9 during rapid braking.

[0026] Wherein, a rectangular through hole having the same size as the sensor 7 is provided on the spring support seat 9, and the sensor 7 is arranged through the rectangular through hole.

[0027] In this embodiment, when the pedal surface 1 is stepped on, the spring guide seat 2 drives the magnet 6 to move downward, the magnet 6 and the sensor 7 generate a magnetic field change, and the sensor 7 transmits an electrical signal to the PCB board 12, and then transmits it to the connector 14 for output, thereby completing the braking action.

[0028] It should be noted that the braking effect can be achieved by using only the pressure sensor 8 or the sensor 7 in the present invention. However, a better solution is to use both in combination. The pressure sensor 8 detects the pressure signal, and the sensor 7 detects the displacement signal. When the pressure signal fails, the displacement signal can output a braking request. When the displacement output signal fails, the pressure signal can output a braking request. The two form a heterogeneous redundant system to meet the braking safety.

[0029] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A micro-travel pedal for new energy vehicles, characterized in that, It includes a pedal surface (1), a spring guide seat (2), a pedal housing (10), a pedal base (11), and a pedal travel sensing assembly; The pedal surface (1) is arranged on the top surface of the spring guide seat (2), the spring guide seat (2) is slidably arranged in the pedal housing (10), the pedal base (11) is arranged on the bottom surface of the pedal housing (10), and the pedal travel sensing assembly is arranged in the pedal housing (10) for sensing the travel of the pedal surface (1); A spring assembly (5) is arranged at the bottom of the spring guide seat (2), the other end of the spring assembly (5) is connected with a spring support seat (9), and the spring support seat (9) is slidably arranged in the pedal housing (10).

2. The micro-travel pedal for a new energy vehicle according to claim 1, characterized in that, The pedal travel sensing assembly includes a pressure sensor (8), and the pressure sensor (8) is arranged between the pedal base (11) and the spring support seat (9).

3. The micro-travel pedal for new energy vehicles according to claim 1, characterized in that, The pedal travel sensing assembly further includes a sensor (7) and a magnet (6), the sensor (7) is arranged on the pedal base (11), and the magnet (6) is embedded in the spring guide seat (2).

4. The micro-travel pedal for new energy vehicles according to claim 1, wherein The surface of the pedal surface (1) is provided with anti-slip lines, and a connecting column (101) is arranged at the bottom thereof. A threaded hole is arranged along the radial direction of the connecting column (101). A plugging hole is arranged on the spring guide seat (2), and a through hole communicating with the plugging hole is arranged on the side surface of the spring guide seat (2). The connecting column (101) is plugged in the plugging hole and fixed by a bolt (3).

5. A micro-travel pedal for a new energy vehicle according to claim 3, characterized in that, Side ears are arranged on both sides of the spring guide seat (2), buffer pads (4) are arranged on the side ears, and a groove capable of accommodating the sensor (7) is further arranged on the spring guide seat (2).

6. The micro-travel pedal for a new energy vehicle according to claim 5, characterized in that, A rectangular through hole having the same size as the sensor (7) is arranged on the spring support seat (9), and the sensor (7) is arranged through the rectangular through hole.

7. The micro-travel pedal for a new energy vehicle according to claim 1, characterized in that, Mounting side ears are arranged on both sides of the pedal housing (10), and the pedal base (11) and the pedal housing (10) are connected by mounting screws (13).

8. A micro-travel pedal for a new energy vehicle according to claim 1, characterized in that, It further includes a PCB board (12) and a connector (14). The PCB board (12) is arranged on the platen base (11), the upper end of the connector (14) is embedded on the pedal base (11), and the connector (14) is connected with the PCB board (12).

Images