Brake pedal and vehicle

Abstract

The utility model provides a brake pedal and a vehicle, and relates to the technical field of vehicles, the brake pedal comprises a base, a pedal arm and a motor module; a rotating shaft is arranged on the base; the pedal arm is connected with the rotating shaft; the motor module comprises a motor, a speed reducing mechanism and a transmission mechanism which are connected in sequence, the transmission mechanism is connected with the rotating shaft, and the motor is used for transmitting torque to the rotating shaft through the speed reducing mechanism and the transmission mechanism in sequence so that the pedal arm can generate pedal force resisting treading. According to the brake pedal, pedal feeling stepless adjustment can be achieved, then different pedal feeling requirements can be met, and the driving experience of a user is improved; the pedal arm can be driven to return and reset; the overall compactness of the brake pedal can be improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a brake pedal and a vehicle. Background Art

[0002] The brake pedal is an important component of the vehicle. Its pedal feel is the braking feedback received by the user's foot when stepping on the brake pedal. A better pedal feel plays an important role in improving the vehicle driving experience.

[0003] In current cutting-edge electromechanical brake (EMB) systems, the brake pedal itself no longer transmits braking force, but rather an electrical signal representing the driver's braking intention. To provide pedal force, a separate pedal simulator is required to simulate pedal feel. However, pedal simulators often only provide a single pedal feel for the brake pedal. Different vehicles may require different pedal feels for different usage requirements. Existing brake pedals with a single pedal feel are difficult to meet diverse needs, impacting the user's driving experience. Utility Model Content

[0004] The problem solved by the utility model is to provide a brake pedal capable of infinitely adjusting the pedal feel, so as to enhance the user's driving experience.

[0005] In order to solve the above problems, the utility model provides a brake pedal and a vehicle.

[0006] In the first aspect, the utility model provides a brake pedal, comprising a base, a pedal arm and a motor module; a rotating shaft is provided on the base; the pedal arm is connected to the rotating shaft; the motor module comprises a motor, a reduction mechanism and a transmission mechanism connected in sequence, the transmission mechanism is connected to the rotating shaft, and the motor is used to transmit torque to the rotating shaft via the reduction mechanism and the transmission mechanism in sequence, so that the pedal arm generates a pedal force to resist stepping on.

[0007] Optionally, the base includes two mounting walls arranged opposite to each other, two ends of the rotating shaft are rotatably connected to the two mounting walls respectively, and the motor module is installed on one of the mounting walls.

[0008] Optionally, the base further includes a bottom plate and a reinforcement platform provided on an upper end of the bottom plate, and the two mounting walls are respectively connected to opposite sides of the reinforcement platform.

[0009] Optionally, the motor module also includes a controller, a motor position sensor and / or an angle sensor, and the controller is electrically connected to the motor, the motor position sensor and / or the angle sensor, respectively. The motor position sensor is used to detect the rotation angle of the motor, and the angle sensor is used to detect the rotation angle of the rotating shaft.

[0010] Optionally, the motor position sensor is integrated inside the motor.

[0011] Optionally, a collision sensor is further included, and the collision sensor is electrically connected to the controller.

[0012] Optionally, a weight-reducing cavity is provided in the pedal arm.

[0013] Optionally, the weight-reducing cavity extends from one end of the pedal arm toward the other end of the pedal arm.

[0014] Optionally, the base is made of plastic.

[0015] In a second aspect, the present invention provides a vehicle comprising the brake pedal as described above.

[0016] The brake pedal of the present invention has the following advantages: by providing a motor module, it can replace the pedal simulator in existing brake pedals. When the user depresses the pedal arm, the motor transmits torque to the rotating shaft via the reduction mechanism and transmission mechanism, causing the pedal arm to generate a pedal force to resist the depressing, thereby providing a pedal feel. Furthermore, because the motor itself can generate different torques, the motor can transmit corresponding torques to the rotating shaft according to different usage requirements to provide different pedal feels, achieving infinitely adjustable pedal feel, thereby meeting different pedal feel requirements and improving the user's driving experience. Simultaneously, the motor can also drive the rotating shaft to rotate, driving the pedal arm to retract and reset. Furthermore, because the motor module of the present application is used to provide pedal force to resist depressing, rather than to control vehicle braking, the motor module directly uses a motor, reduction mechanism, and transmission mechanism in a sequential transmission connection to provide driving force to the rotating shaft and pedal. No electromagnetic clutch or other structures are required within the motor module, resulting in a smaller overall size and higher integration, which can improve the compactness of the brake pedal and reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a brake pedal according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the motor module of the brake pedal according to an embodiment of the present utility model;

[0019] Figure 3 This is a partial schematic diagram of the brake pedal at the rotating shaft according to an embodiment of the present utility model;

[0020] Figure 4 A cross-sectional view of a pedal arm of a brake pedal according to an embodiment of the present invention;

[0021] Figure 5This is a connection diagram of the controller of the brake pedal according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1. Base; 11. Bottom plate; 12. Reinforcement platform; 13. Mounting wall; 131. Hinge hole; 2. Pedal arm; 21. Pedal surface; 22. Weight-reducing cavity; 221. Cavity wall; 3. Motor module; 31. Motor; 32. Speed ​​reduction mechanism; 33. Transmission mechanism; 34. Housing; 35. Controller; 36. Motor position sensor; 37. Angle sensor; 4. Rotating shaft; 5. Collision sensor. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0025] The Z-axis in the accompanying drawings represents the vertical direction, that is, the up-down position, with the positive direction of the Z-axis representing the top and the reverse direction of the Z-axis representing the bottom. The X-axis in the accompanying drawings represents the horizontal direction and is designated as the front-to-back position, with the positive direction of the X-axis representing the front side and the reverse direction of the X-axis representing the rear side. The Y-axis in the accompanying drawings represents the left-to-right position, with the positive direction of the Y-axis representing the left side and the reverse direction of the Y-axis representing the right side. It should also be noted that the aforementioned Z-axis, Y-axis, and X-axis are merely for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0026] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in this utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0027] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0028] In related technologies, pedal simulators create a pedal feel by applying a pedal force to the user's foot. Pedal force is the resistance experienced by the user's foot when the pedal is depressed. A pedal simulator, however, incorporates a spring. This spring generates a spring force when the pedal is depressed, causing the brake pedal to generate a pedal force that resists the user's foot's pressure. However, the selection of a pedal simulator also determines the spring force it can provide, which in turn determines the pedal force provided by the brake pedal. This results in a single pedal feel for the brake pedal, making it difficult to meet diverse user needs and impacting the user's driving experience.

[0029] In response to the problems existing in the above-mentioned related technologies, the present invention provides a brake pedal and a vehicle, providing a brake pedal capable of infinitely adjusting the pedal feel, thereby improving the user's driving experience. Detailed description will be given below with reference to specific embodiments.

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a brake pedal, comprising a base 1, a pedal arm 2 and a motor module 3; a rotating shaft 4 is provided on the base 1; the pedal arm 2 is connected to the rotating shaft 4; the motor module 3 comprises a motor 31, a reduction mechanism 32 and a transmission mechanism 33 connected in sequence, the transmission mechanism 33 is connected to the rotating shaft 4, the motor 31 is used to transmit torque to the rotating shaft 4 via the reduction mechanism 32 and the transmission mechanism 33 in sequence, so that the pedal arm 2 generates a pedal force to resist stepping on.

[0031] It should be noted that the brake pedal provided in the embodiment of the present invention is mainly used in an electronic mechanical brake system (EMB). The brake pedal itself does not transmit braking force, but only needs to transmit an electrical signal representing the driver's braking intention. Among them, the motor module 3 is used as a pedal simulator to simulate the pedal feel.

[0032] Specifically, the rotating shaft 4 is rotatably mounted on the base 1. One end of the pedal arm 2 is connected to the rotating shaft 4, and the other end forms a pedal surface 21. When the motor module 3 transmits torque to the rotating shaft 4, the rotating shaft 4 drives the pedal surface end of the pedal arm 2 to move upward, thereby generating a pedal force on the pedal surface 21 that is opposite to the user's foot force, allowing the user to experience a pedal feel.

[0033] It should be noted that the speed reduction mechanism 32 and the transmission mechanism 33 are both conventional components in the motor drive system, and the present invention does not impose any specific restrictions on the specific structures of the speed reduction mechanism 32 and the transmission mechanism 33 .

[0034] In this embodiment, the motor module 3 replaces the pedal simulator in existing brake pedals. When a user depresses the pedal arm 2, the motor 31 transmits torque to the rotating shaft 4 via the reduction mechanism 32 and transmission mechanism 33, causing the pedal arm 2 to generate a pedal force to resist the depressing force, thereby providing a pedal feel. Furthermore, since the motor 31 can generate different torques, the motor 31 can transmit corresponding torques to the rotating shaft 4 to provide different pedal feels according to different usage requirements, achieving infinitely adjustable pedal feel, thereby meeting different pedal feel requirements and enhancing the user's driving experience. Furthermore, the motor 31 can also drive the rotating shaft 4 to rotate, thereby driving the pedal arm 2 back and forth. Furthermore, since the motor module 3 of this application is used to provide a pedal force to resist the depressing force, rather than to control the vehicle's braking, the motor module 3 directly utilizes the motor 31, reduction mechanism 32, and transmission mechanism 33 in sequential transmission connection to provide driving force to the rotating shaft 4 and the pedal. This eliminates the need for an electromagnetic clutch or other structures within the motor module 3, resulting in a smaller overall size and higher integration, which can improve the compactness of the brake pedal and reduce manufacturing costs.

[0035] Alternatively, as Figure 1 As shown, the base 1 includes two mounting walls 13 arranged opposite to each other, both ends of the rotating shaft 4 are rotatably connected to the two mounting walls 13 , and the motor module 3 is installed on one of the mounting walls 13 .

[0036] Specifically, two hinge holes 131 arranged opposite to each other can be opened on the two mounting walls 13, and the two ends of the rotating shaft 4 can be correspondingly inserted into the two hinge holes 131, so that the rotating shaft 4 can rotate relative to the hinge holes 131 to realize the rotating installation of the rotating shaft 4 on the mounting wall 13.

[0037] Specifically, the motor module 3 can also include a shell 34 and a controller 35, a motor position sensor 36 and an angle sensor 37. The shell 34 is connected to the mounting wall 13, and the motor 31, the reduction mechanism 32, the transmission mechanism 33, the controller 35, the motor position sensor 36 and the angle sensor 37 are respectively arranged in the shell 34.

[0038] In this optional embodiment, since the motor module 3 has a small overall volume and high integration and light weight, the motor module 3 can be directly mounted on a mounting wall 13 of the base 1 and connected to the end of the rotating shaft 4 close to the mounting wall 13, without the need to add a motor bracket outside the base 1 to support the motor module 3. This can not only ensure the installation strength of the motor module 3, but also reduce the overall volume of the brake pedal to improve the compactness of the brake pedal.

[0039] Alternatively, as Figure 3 As shown, the base 1 further includes a bottom plate 11 and a reinforcing platform 12 provided on the upper end of the bottom plate 11 , and the two mounting walls 13 are respectively connected to opposite sides of the reinforcing platform 12 .

[0040] In this optional embodiment, the reinforcing platform 12 can enhance the overall strength of the base 1, thereby making the motor module 3 more securely mounted on the base 1. Furthermore, compared to mounting the mounting wall 13 on the base 1, mounting the mounting wall 13 on the reinforcing platform 12 can enhance the structural strength of the mounting wall 13, thereby increasing the bearing capacity of the mounting wall 13 and facilitating the installation of the motor module 3.

[0041] Alternatively, as Figure 4 As shown, a weight-reducing cavity 22 is provided in the pedal arm 2 .

[0042] In this optional embodiment, by providing a weight-reducing cavity 22 in the pedal arm 2, the weight of the pedal arm 2 is reduced, thereby improving the lightweight of the brake pedal; in addition, a lighter pedal arm 2 can also reduce the workload of the motor module 3, thereby reducing the energy consumption of the brake pedal.

[0043] Alternatively, as Figure 4 As shown, the weight-reducing cavity 22 extends from one end of the pedal arm 2 toward the other end of the pedal arm 2 .

[0044] It should be noted that the "one end" and "the other end" of the pedal arm 2 refer to the two ends of the pedal arm 2 along its own length. In other embodiments, the weight-reducing cavity 22 has two cavity walls 221 arranged opposite each other along the axial direction of the rotating shaft 4. The rotating shaft 4 is respectively inserted through the two cavity walls 221 of the weight-reducing cavity 22. As a result, the rotating shaft 4 can establish a connection relationship with the two cavity walls 221, which helps to improve the connection strength between the rotating shaft 4 and the pedal arm 2.

[0045] In this optional embodiment, the weight-reducing cavity 22 extends from one end of the pedal arm 2 toward the other end of the pedal arm 2, so that the length of the weight-reducing cavity 22 can be roughly equivalent to the length of the pedal arm 2, so that the pedal arm 2 constitutes a hollow thin-walled part, which can effectively reduce the weight of the pedal arm 2 and ensure the structural strength of the pedal arm 2.

[0046] Optionally, the base 1 is made of plastic.

[0047] In this optional embodiment, the material of the base 1 is selected to be plastic. Compared with the metal base 1, the base 1 is lighter, which is conducive to further improving the lightweight of the brake pedal.

[0048] Alternatively, as Figure 2 As shown, the motor module 3 also includes a controller 35, a motor position sensor 36 and / or an angle sensor 37. The controller 35 is electrically connected to the motor 31, the motor position sensor 36 and / or the angle sensor 37, respectively. The motor position sensor 36 is used to detect the rotation angle of the motor 31, and the angle sensor 37 is used to detect the rotation angle of the rotating shaft 4.

[0049] like Figure 5 As shown, the controller 35 may specifically include an MCU (Micro Control Unit), a motor driver chip, a driver bridge circuit, a power chip and a CAN (Controller Area Network) transceiver module. The motor driver chip is electrically connected to the MCU, the driver bridge circuit is electrically connected to the motor driver chip and the motor 31 respectively, the motor position sensor 36 and the angle sensor 37 are electrically connected to the MCU respectively, and the power chip and the CAN transceiver module are electrically connected to the MCU respectively. When the pedal arm 2 is stepped on, the MCU receives the detection information input by the motor position sensor 36 and the angle sensor 37, and calculates and converts it into the current information required by the motor 31. The motor driver chip controls the driver bridge circuit to output different currents according to the current information. The motor 31 outputs different torques according to different currents. The torque is amplified by the deceleration mechanism 32 and transmitted by the transmission mechanism 33 to be transmitted to the rotating shaft 4. Finally, the pedal arm 2 generates a pedal force to resist stepping on, thereby providing a pedal feel.

[0050] In this optional embodiment, the rotation angle of the motor 31 detected by the motor position sensor 36 can be converted into the stroke of the pedal arm 2, and the rotation angle of the rotating shaft 4 detected by the angle sensor 37 can also be converted into the stroke of the pedal arm 2. Therefore, compared with the traditional pedal simulator, this embodiment can eliminate the need for a stroke sensor, thereby improving the integration of the brake pedal. Moreover, when the motor position sensor 36 and the angle sensor 37 exist at the same time, signal redundancy can also be achieved to ensure that detection can still be carried out when a single sensor fails, thereby improving the accuracy and stability of the detection.

[0051] Optionally, the motor position sensor 36 is integrated inside the motor 31 .

[0052] In this optional embodiment, the motor position sensor 36 is integrated inside the motor 31, that is, the motor 31 can be selected as a motor with a motor position sensor 36, so that the rotation angle detection of the motor 31 can be completed by relying on the sensor provided by the motor. There is no need to add a sensor outside the motor to detect the motor angle or stroke, which can reduce the additional installation structure and wiring harness required for the additional sensor, which is beneficial to improving the integration of the brake pedal and reducing the assembly cost of the brake pedal.

[0053] Alternatively, as Figure 2 As shown, the brake pedal further includes a collision sensor 5 , and the collision sensor 5 is electrically connected to the controller 35 .

[0054] It should be noted that the collision sensor 5 can also serve as part of the vehicle's airbag module, so that when the collision sensor 5 detects a collision, it synchronously transmits signals to the control module of the airbag module and the controller of the brake pedal to control the airbag module and the brake pedal to operate respectively.

[0055] In this optional embodiment, when the collision sensor 5 detects that the vehicle has been hit, it can transmit a signal to the controller 35. The controller 35 controls the motor 31 to actively rotate so that the pedal arm 2 can avoid the user's feet, thereby realizing the active avoidance function of the pedal arm 2 and providing more foot space for the user, thereby preventing the user's feet from being damaged by the pedals during a collision.

[0056] An embodiment of the present invention provides a vehicle, comprising the brake pedal as described above.

[0057] In this embodiment, since the vehicle includes the brake pedal as described above, it has all the beneficial effects brought about by all the above-mentioned brake pedal embodiments, and at least has the following beneficial effects: by providing a motor module 3, the pedal simulator in the existing brake pedal can be replaced, so that when the user steps on the pedal arm 2, the motor 31 can transmit torque to the rotating shaft 4 through the reduction mechanism 32 and the transmission mechanism 33 to make the pedal arm 2 generate a pedal force to resist the stepping, thereby providing a pedal feel, and since the motor 31 itself can generate different torques, in this way, when facing different usage requirements, the motor 31 can transmit corresponding torque to the rotating shaft 4 according to different requirements to provide different pedal feels, realize stepless adjustment of the pedal feel, and thus meet different pedal feel requirements and enhance the user's driving experience. At the same time, the motor 31 can also drive the rotating shaft 4 to rotate to drive the pedal arm 2 to retract and reset. Moreover, since the motor module 3 of the present application is used to provide pedal force to resist stepping on, rather than to control the vehicle to brake, the motor module 3 directly adopts the motor 31, the reduction mechanism 32 and the transmission mechanism 33 to be connected in sequence to provide driving force to the rotating shaft 4 and the pedal. There is no need to set up an electromagnetic clutch or other structures in the motor module 3. The overall volume is small and the integration is high, which can improve the overall compactness of the brake pedal and reduce manufacturing costs.

[0058] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A brake pedal, characterized in that: The invention comprises a base (1), a pedal arm (2) and a motor module (3); a rotating shaft (4) is provided on the base (1); the pedal arm (2) is connected to the rotating shaft (4); the motor module (3) comprises a motor (31), a reduction mechanism (32) and a transmission mechanism (33) which are connected in sequence, the transmission mechanism (33) being connected to the rotating shaft (4); the motor (31) is used to transmit torque to the rotating shaft (4) via the reduction mechanism (32) and the transmission mechanism (33) in sequence, so that the pedal arm (2) generates a pedal force to resist stepping.

2. The brake pedal according to claim 1, wherein: The base (1) comprises two mounting walls (13) arranged opposite to each other, the two ends of the rotating shaft (4) are rotatably connected to the two mounting walls (13), and the motor module (3) is mounted on one of the mounting walls (13).

3. The brake pedal according to claim 2, characterized in that: The base (1) further comprises a bottom plate (11) and a reinforcing platform (12) provided on the upper end of the bottom plate (11), and the two mounting walls (13) are respectively connected to opposite sides of the reinforcing platform (12).

4. The brake pedal according to claim 1, wherein: The motor module (3) further includes a controller (35), and a motor position sensor (36) and / or an angle sensor (37). The controller (35) is electrically connected to the motor (31), the motor position sensor (36) and / or the angle sensor (37), respectively. The motor position sensor (36) is used to detect the rotation angle of the motor (31), and the angle sensor (37) is used to detect the rotation angle of the rotating shaft (4).

5. The brake pedal according to claim 4, characterized in that: The motor position sensor (36) is integrated inside the motor (31).

6. The brake pedal according to claim 4, characterized in that: It also includes a collision sensor (5), which is electrically connected to the controller (35).

7. The brake pedal according to claim 1, wherein: A weight-reducing cavity (22) is provided in the pedal arm (2).

8. The brake pedal according to claim 7, characterized in that: The weight-reducing cavity (22) is extended from one end of the pedal arm (2) toward the other end of the pedal arm (2).

9. The brake pedal according to claim 1, wherein: The base (1) is made of plastic.

10. A vehicle, characterized in that: Comprising a brake pedal as described in any one of claims 1-9.

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