Brake pedal device and vehicle

Abstract

The utility model discloses a brake pedal device and a vehicle, and relates to the technical field of vehicles. The shell is provided with a containing cavity used for being filled with magnetorheological fluid; the supporting piece is provided with a first end and a second end which are opposite to each other, the first end is rotationally connected with the pedal assembly, and the second end slidably extends into the magnetorheological fluid in the first direction; the elastic piece is elastically connected with the shell and the supporting piece and has a trend of driving the supporting piece to slide towards a direction away from the accommodating cavity; the damping structures are arranged on the peripheral wall of the second end in a protruding mode, the multiple damping structures are arranged at intervals in the first direction, at least one damping structure is provided with a flow guide hole penetrating through the damping structure in the first direction, and the magnetorheological fluid can change the viscosity according to the strength of the magnetic field, so that damping force acting on the damping structures is correspondingly changed. According to the technical scheme, the possibility that the brake pedal device is stuck is reduced.

Description

Technical Field

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

[0002] In a vehicle's brake-by-wire system, the pedal feel obtained by the user when stepping on the brake pedal is mainly provided by a foot feel simulator.

[0003] An existing foot feel simulator for a wire-controlled braking system includes a support, a shell, and an electromagnetic coil. The pedal is directly or indirectly connected to the support. The shell is provided with a cavity and filled with magnetorheological fluid. A portion of the support is immersed in the magnetorheological fluid. The electromagnetic coil is arranged near the cavity. When energized, the electromagnetic coil generates an electromagnetic field, which adjusts the magnetorheological fluid to a desired viscosity, thereby making the damping force of the magnetorheological fluid on the support adjustable, thereby making the foot feel provided to the user adjustable.

[0004] However, when the viscosity of the magnetorheological fluid is relatively high, the fluidity of the magnetorheological fluid is relatively poor, which may easily cause the support member extending into the magnetorheological fluid to become stuck. Utility Model Content

[0005] The main purpose of the utility model is to provide a brake pedal device and a vehicle, aiming to reduce the possibility of the brake pedal device getting stuck.

[0006] To achieve the above-mentioned purpose, the brake pedal device proposed in the present invention includes:

[0007] Pedal assembly;

[0008] The housing is provided with a receiving cavity for filling the magnetorheological fluid;

[0009] a support member having a first end and a second end opposite to each other, wherein the first end is rotatably connected to the pedal assembly, and the second end is slidably extended into the interior of the magnetorheological fluid along a first direction;

[0010] an elastic member elastically connecting the housing and the support member, and having a tendency to drive the support member to slide in a direction away from the receiving cavity; and

[0011] A damping structure is protruded from the outer peripheral wall of the second end. Multiple damping structures are arranged at intervals along the first direction, and at least one of the damping structures is provided with a guide hole passing through itself along the first direction. The magnetorheological fluid can change its viscosity according to the intensity of the magnetic field, so that the damping force acting on the damping structure changes accordingly.

[0012] In one embodiment, each of the

[0013] The damping structure is provided with at least one guide hole.

[0014] In one embodiment, the guide holes of two adjacent damping structures are coaxially arranged.

[0015] In one embodiment, the damping structure is annular, sleeved on and connected to the outer peripheral wall of the support member; and / or,

[0016] The plurality of damping structures are arranged at equal intervals along the first direction.

[0017] In one embodiment, the brake pedal device further includes a magnetic field control component, which is configured to generate the magnetic field acting on the magnetorheological fluid and adjust the intensity of the magnetic field.

[0018] In one embodiment, the magnetic field control assembly comprises:

[0019] a first electrode fixed to the housing and extending into the interior of the magnetorheological fluid;

[0020] a second electrode, spaced apart from the first electrode, fixed to the housing and extending into the interior of the magnetorheological fluid;

[0021] a controller electrically connected to the first electrode and the second electrode, the controller, the first electrode, the second electrode, and the magnetorheological fluid forming a closed loop and generating the magnetic field; and

[0022] A displacement sensor is electrically connected to the controller, and is used to detect the displacement information of the support member or the pedal assembly and send the displacement information to the controller. The controller is used to receive the displacement information and correspondingly control the current size of the closed loop to adjust the strength of the magnetic field.

[0023] In one embodiment, the elastic member is disposed inside the receiving cavity, one end of the elastic member is connected to the inner wall of the receiving cavity, and the other end of the elastic member is sleeved on the outside of the support member and abuts against the damping structure.

[0024] In one embodiment, the brake pedal device also includes a support, the shell is fixed to the support, one end of the pedal assembly is rotatably connected to the support, the other end of the pedal assembly extends in a direction away from the support, and the first end of the support member is rotatably connected to the middle part of the pedal assembly.

[0025] In one embodiment, the pedal assembly includes a first arm, a second arm and a brake pedal, the first arm and the second arm are synchronously rotatably arranged on the support, the brake pedal is arranged at an end of the first arm away from the support, and the first end of the support member is rotatably connected to an end of the second arm away from the support.

[0026] The utility model also provides a vehicle, comprising the above-mentioned brake pedal device.

[0027] The brake pedal device of the present invention includes a pedal assembly, a housing, a support member, an elastic member, and a damping structure. When a user steps on the pedal assembly, the support member moves, which in turn drives the damping structure to move within the magnetorheological fluid. The elastic member deforms under force, and the reaction force of the elastic member and the damping force of the magnetorheological fluid are transmitted to the pedal assembly through the support member. This force is then fed back to the user's foot to provide a feel for the foot. Because the magnetorheological fluid can change its viscosity based on the strength of the magnetic field, the damping force applied to the damping structure as it moves within the magnetorheological fluid can also change accordingly. By changing the viscosity of the magnetorheological fluid through the magnetic field, the pedal assembly can achieve different reaction forces for the same displacement, thereby providing different foot feel for the user, thereby satisfying the foot feel requirements of different users. Multiple damping structures are provided on the outer wall of the end of the support member that extends into the magnetorheological fluid. These structures enhance the damping force exerted by the magnetorheological fluid on the support member and distribute the damping force more evenly across the exterior of the support member, preventing excessive force on any single point of the support member. This reduces the likelihood of deformation of the damping structure and the support member, thereby extending the service life of the brake pedal assembly. At least one damping structure is provided with a flow guide hole to enhance the smoothness of the magnetorheological fluid flow within the receiving chamber. This reduces the likelihood of the support member becoming stuck in the event of high magnetorheological fluid viscosity, thereby improving the reliability of the brake pedal assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0029] Figure 1 A cross-sectional view of an embodiment of a brake pedal device provided by the present utility model;

[0030] Figure 2 A cross-sectional view of a partial structure of an embodiment of a brake pedal device provided by the present invention;

[0031] Figure 3 A schematic diagram of the structure of an embodiment of the brake pedal device provided by the present invention Figure 1 ;

[0032] Figure 4 A schematic diagram of the structure of an embodiment of the brake pedal device provided by the utility model Figure 2 .

[0033] Description of Figure Numbers:

[0034] 100, pedal assembly; 110, first arm; 120, second arm; 130, brake pedal;

[0035] 200, housing;

[0036] 300, magnetorheological fluid;

[0037] 400, support member;

[0038] 500, elastic parts;

[0039] 600, damping structure; 610, diversion hole;

[0040] 700, magnetic field control component; 710, first electrode; 720, second electrode; 730, controller; 740, displacement sensor; 750, power supply;

[0041] 800. Support.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] In this utility model, unless otherwise specified or limited, the terms "connect" and "fix" should be understood in a broad sense. For example, "fix" can refer to a fixed connection, a detachable connection, or an integral connection; "connect" can refer to a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, and can refer to internal communication between two components or an interaction between two components. Unless otherwise specified, those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] The utility model provides a brake pedal device.

[0048] See also Figures 1 to 2 , Figure 1 This is a cross-sectional view of an embodiment of the brake pedal device provided by the utility model. Figure 2 This is a cross-sectional view of a partial structure of an embodiment of a brake pedal device provided by the present invention.

[0049] In one embodiment of the present invention, the brake pedal device includes:

[0050] Pedal assembly 100;

[0051] The housing 200 is provided with a receiving cavity for filling the magnetorheological fluid 300;

[0052] The support member 400 has a first end and a second end opposite to each other, the first end being rotatably connected to the pedal assembly 100 and the second end being slidably extended into the interior of the magnetorheological fluid 300 along a first direction;

[0053] The elastic member 500 elastically connects the housing 200 and the support member 400 and has a tendency to drive the support member 400 to slide in a direction away from the receiving cavity; and

[0054] The damping structure 600 is protruding from the outer peripheral wall of the second end. Multiple damping structures 600 are arranged at intervals along the first direction, and at least one damping structure 600 is provided with a guide hole 610 passing through itself along the first direction. The magnetorheological fluid 300 can change its viscosity according to the intensity of the magnetic field, so that the damping force acting on the damping structure 600 changes accordingly.

[0055] The brake pedal device of the present invention includes a pedal assembly 100, a housing 200, a support member 400, an elastic member 500, and a damping structure 600. When a user steps on the pedal assembly 100, the support member 400 moves, which in turn drives the damping structure 600 to move within the magnetorheological fluid 300. The elastic member 500 deforms under force, and the reaction force of the elastic member 500 and the damping force of the magnetorheological fluid 300 are transmitted to the pedal assembly 100 through the support member 400. This force is then fed back to the user's foot to provide a foot feel. Because the magnetorheological fluid 300 can change its viscosity according to the strength of the magnetic field, the damping force applied to the damping structure 600 during movement within the magnetorheological fluid 300 can be changed accordingly. By changing the viscosity of the magnetorheological fluid 300 through the magnetic field, the pedal assembly 100 can achieve different reaction forces for the same displacement, thereby providing different foot feel to the user, thereby satisfying the foot feel requirements of different users. Multiple damping structures 600 are provided on the outer wall of the end of the support member 400 that extends into the magnetorheological fluid 300. These structures enhance the damping force exerted by the magnetorheological fluid 300 on the support member 400 and distribute the damping force more evenly across the exterior of the support member 400, preventing excessive force on any particular point of the support member 400. This reduces the likelihood of deformation of the damping structures 600 and the support member 400, thereby extending the service life of the brake pedal assembly. At least one damping structure 600 is provided with a flow guide hole 610, which enhances the smooth flow of the magnetorheological fluid 300 within the receiving chamber. This reduces the likelihood of the support member 400 becoming stuck in the event of high viscosity of the magnetorheological fluid 300, thereby improving the reliability of the brake pedal assembly.

[0056] The first direction is as follows Figure 1 As shown, it is in the same direction as the axial direction of the support member 400.

[0057] In an embodiment of the present invention, the housing 200, the magnetorheological fluid 300, the support member 400, the elastic member 500, and the damping structure 600 collectively form a foot feel simulator. By adjusting the size and number of the flow guide holes 610, the smoothness of the magnetorheological fluid 300 flowing through the damping structure 600 can be further influenced, thereby adjusting the magnitude of the damping force. When the flow guide holes 610 are small, the flow of the magnetorheological fluid 300 is restricted, and the damping force is increased; conversely, when the flow guide holes 610 are large, the flow is smoother and the damping force is reduced.

[0058] In one embodiment, each damping structure 600 is provided with at least one flow guide hole 610 .

[0059] Reference Figure 2In an embodiment of the present invention, one or more guide holes 610 are provided on each damping structure 600, which further improves the fluidity of the magnetorheological fluid 300 in the receiving chamber and ensures that the magnetorheological fluid 300 flows evenly when passing through multiple damping structures 600, thereby improving the stability of the damping force during the entire braking process, avoiding the sudden increase in the damping force when the pedal assembly 100 moves to a certain position, and thus avoiding inconsistent braking feel for the user; in addition, even if the guide holes 610 of a damping structure 600 are blocked, the guide holes 610 on other damping structures 600 can still function, thereby improving the reliability of the entire brake pedal device.

[0060] In one embodiment, the guide holes 610 of two adjacent damping structures 600 are coaxially arranged.

[0061] Reference Figure 2 In an embodiment of the present invention, the number of guide holes 610 provided on two adjacent damping structures 600 is the same, and the guide holes 610 on the two adjacent damping structures 600 are coaxially arranged. On the one hand, this can ensure that the flow path of the magnetorheological fluid 300 between the multiple damping structures 600 is the shortest, thereby improving the flow efficiency and the damping response speed; on the other hand, the coaxial arrangement reduces the cross-flow of the magnetorheological fluid 300 between different damping structures 600, reduces the cross-flow interference, thereby improving the uniformity of the damping force of the magnetorheological fluid 300 on the multiple damping structures 600, and helps to further improve the stability of the damping force; on the other hand, the structures of the various damping structures 600 are the same, which improves the processing efficiency of the damping structure 600 and the assembly efficiency of the damping structure 600 and the support member 400.

[0062] In one embodiment, the damping structure 600 is annular and is sleeved and connected to the outer peripheral wall of the support member 400; and / or,

[0063] The plurality of damping structures 600 are arranged at equal intervals along the first direction.

[0064] In an embodiment of the present invention, the support member 400 and the damping structure 600 are coaxially arranged. The damping structure 600 is annularly sleeved around the outer peripheral wall of the support member 400. The damping structure 600 and the support member 400 are connected by welding, bonding, or clamping, resulting in a simple structure and easy manufacturing. Specifically, the receiving cavity is cylindrical, the support member 400 is rod-shaped, and the damping structure 600 is annular. The support member 400, the damping structure 600, and the receiving cavity are coaxially arranged, so that the magnetorheological fluid 300 located in the receiving cavity exerts a more uniform damping force on the damping structure 600.

[0065] Reference Figure 2In an embodiment of the present invention, a plurality of damping structures 600 are arranged at equal intervals along the first direction, that is, at equal intervals along the axial direction of the support member 400, so as to transmit a balanced damping force to the support member 400, improve the uniformity of the force on the support member 400, reduce the possibility of deformation of the damping structure 600 or the support member 400, and extend the service life of the brake pedal device.

[0066] In one embodiment, the brake pedal device further includes a magnetic field control assembly 700 , which is configured to generate a magnetic field acting on the magnetorheological fluid 300 and adjust the intensity of the magnetic field.

[0067] Combine Figure 2 and Figure 3 In an embodiment of the present invention, the brake pedal device controls the strength of the magnetic field via a magnetic field control assembly 700, thereby adjusting the viscosity of the magnetorheological fluid 300. The magnetic field control assembly 700 is generally electromagnetic, and can include multiple electromagnets. The overall magnetic field strength can be adjusted by switching different numbers of electromagnets on and off. Alternatively, an electromagnetic coil can be provided. When energized, the electromagnetic coil generates an induced magnetic field, and the magnetic field strength can be adjusted by adjusting the current flowing through the electromagnetic coil.

[0068] In one embodiment, the magnetic field control assembly 700 includes:

[0069] The first electrode 710 is fixed to the housing 200 and extends into the interior of the magnetorheological fluid 300;

[0070] The second electrode 720 is spaced apart from the first electrode 710 , fixed to the housing 200 and extending into the interior of the magnetorheological fluid 300 ;

[0071] The controller 730 is electrically connected to the first electrode 710 and the second electrode 720 respectively. The controller 730, the first electrode 710, the second electrode 720 and the magnetorheological fluid 300 together form a closed loop and generate a magnetic field; and

[0072] The displacement sensor 740 is electrically connected to the controller 730 and is used to detect the displacement information of the support member 400 or the pedal assembly 100 and send the displacement information to the controller 730. The controller 730 is used to receive the displacement information and control the current size of the closed loop accordingly to adjust the strength of the magnetic field.

[0073] Reference Figure 1 and Figure 2In an embodiment of the present invention, the magnetic field control component 700 includes a first electrode 710, a second electrode 720, a controller 730, and a displacement sensor 740. In this embodiment, the magnetorheological fluid 300 is conductive. The controller 730, the first electrode 710, the second electrode 720, and the magnetorheological fluid 300 together form a closed loop and generate a magnetic field. The magnetic field then acts on the magnetorheological fluid 300. The controller 730 adjusts the current in the closed loop to adjust the viscosity of the magnetorheological fluid 300. The structure is simple and easy to implement. The displacement sensor 740 is electrically connected to the controller 730 and is used to detect the displacement information of the support member 400 or the pedal assembly 100, that is, the displacement amount. The displacement sensor 740 feeds back the displacement information to the controller 730, and the controller 730 then adjusts the current according to the displacement information. Among them, the controller 730 can be directly or indirectly connected to the vehicle's battery, so that the vehicle's battery serves as a power source 750 to power the closed loop. The controller 730 may be a circuit board, a single chip microcomputer, etc., and the displacement sensor 740 may be in various forms such as ultrasonic type, photoelectric type, etc.

[0074] Specifically in this embodiment, when user A is adjusting the foot feel of the brake pedal device, user A steps on the brake pedal 130, and the displacement sensor 740 detects the displacement information of the support member 400 and sends the displacement information to the controller 730. The controller 730 will cause the closed loop to pass a preset current 1 based on the displacement information. If user A feels that the foot feel is relatively light at this time, user A can operate the controller 730 to increase the current to increase the viscosity of the magnetorheological fluid 300 until user A feels that the foot feel is appropriate. The controller 730 records the current 2 passing through the closed loop at this time. Then, when the controller 730 receives the same displacement information again, it will cause the closed loop to pass current 2 to meet the foot feel requirements of user A. When user B uses the vehicle again, the feel that suits user A may not necessarily suit user B. User B can adjust the vehicle again. For example, if user B feels a heavy feel when stepping on brake pedal 130, user B can operate controller 730 to reduce the current, reducing the viscosity of magnetorheological fluid 300, until user B feels a comfortable feel. Controller 730 records the current 3 flowing through the closed circuit at this time. Subsequently, when controller 730 receives the same displacement information, it will pass current 3 through the closed circuit to meet user B's desired feel. This process satisfies the different feel requirements of different users and improves the vehicle's usability.

[0075] In one embodiment, the elastic member 500 is disposed inside the receiving cavity, one end of the elastic member 500 is connected to the inner wall of the receiving cavity, and the other end of the elastic member 500 is sleeved outside the support member 400 and abuts against the damping structure 600 .

[0076] Reference Figure 2In the embodiment of the present invention, the elastic member 500 is disposed within the receiving cavity, and the housing 200 protects the elastic member 500, thereby extending the service life of the elastic member 500. The elastic member 500 is sleeved on the outside of the support member 400, which is easy to assemble and securely fixed, not easily deformed, thereby extending the service life of the elastic member 500.

[0077] In one embodiment, the brake pedal device also includes a support 800, the shell 200 is fixed to the support 800, one end of the pedal assembly 100 is rotatably connected to the support 800, the other end of the pedal assembly 100 extends in a direction away from the support 800, and the first end of the support member 400 is rotatably connected to the middle part of the pedal assembly 100.

[0078] Reference Figure 3 and Figure 4 In an embodiment of the present invention, the brake pedal device includes a support 800, the shell 200 is fixed on the support 800, the pedal assembly 100 is rotatably connected to the support 800, and the support 800 provides support for both the shell 200 and the pedal assembly 100. The pedal assembly 100 and the shell 200 are connected as a whole through the support 800, thereby improving the stability of the entire brake pedal device. In addition, the entire brake pedal device can be installed on the vehicle body by simply installing the support 800, which is easy to assemble.

[0079] In one embodiment, the pedal assembly 100 includes a first arm 110, a second arm 120 and a brake pedal 130. The first arm 110 and the second arm 120 are synchronously rotatably arranged on the support 800. The brake pedal 130 is arranged at an end of the first arm 110 away from the support 800, and the first end of the support member 400 is rotatably connected to the end of the second arm 120 away from the support 800.

[0080] Reference Figure 3 and Figure 4 In an embodiment of the present invention, the pedal assembly 100 includes a first arm 110, a second arm 120, and a brake pedal 130. The first arm 110 is longer than the second arm 120. The first arm 110 and the second arm 120 rotate synchronously, ensuring that when a user steps on the brake pedal 130, the support member 400 can slide, and when the support member 400 is reset under the action of the elastic member 500, the brake pedal 130 can be reset. Compared to connecting the brake pedal 130 and the support member 400 via a single arm, the present solution connects the brake pedal 130 and the support member 400 via two synchronously rotating arms, making the placement of the foot feel simulator more flexible and improving the convenience of assembly on the vehicle body.

[0081] The present invention also provides a vehicle including the aforementioned brake pedal device. The specific structure of the brake pedal device is similar to that of the aforementioned embodiments. Since the present vehicle utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore, no further details will be given here.

[0082] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A brake pedal device, characterized in that: include: Pedal assembly; The housing is provided with a receiving cavity for filling the magnetorheological fluid; a support member having a first end and a second end opposite to each other, wherein the first end is rotatably connected to the pedal assembly, and the second end is slidably extended into the interior of the magnetorheological fluid along a first direction; an elastic member elastically connecting the housing and the support member, and having a tendency to drive the support member to slide in a direction away from the receiving cavity; as well as A damping structure is protruded from the outer peripheral wall of the second end. Multiple damping structures are arranged at intervals along the first direction, and at least one of the damping structures is provided with a guide hole passing through itself along the first direction. The magnetorheological fluid can change its viscosity according to the intensity of the magnetic field, so that the damping force acting on the damping structure changes accordingly.

2. The brake pedal device according to claim 1, wherein: Each of the damping structures is provided with at least one guide hole.

3. The brake pedal device according to claim 2, wherein: The guide holes of two adjacent damping structures are coaxially arranged.

4. The brake pedal device according to claim 1, wherein: The damping structure is annular, sleeved on and connected to the outer peripheral wall of the support member; and / or, The plurality of damping structures are arranged at equal intervals along the first direction.

5. The brake pedal device according to any one of claims 1 to 4, characterized in that: The brake pedal device further includes a magnetic field control component, which is used to generate the magnetic field acting on the magnetorheological fluid and adjust the intensity of the magnetic field.

6. The brake pedal device according to claim 5, wherein: The magnetic field control component includes: a first electrode fixed to the housing and extending into the interior of the magnetorheological fluid; a second electrode, spaced apart from the first electrode, fixed to the housing and extending into the interior of the magnetorheological fluid; a controller electrically connected to the first electrode and the second electrode, the controller, the first electrode, the second electrode, and the magnetorheological fluid forming a closed loop and generating the magnetic field; and A displacement sensor is electrically connected to the controller, and is used to detect the displacement information of the support member or the pedal assembly and send the displacement information to the controller. The controller is used to receive the displacement information and correspondingly control the current size of the closed loop to adjust the strength of the magnetic field.

7. The brake pedal device according to claim 1, wherein: The elastic member is arranged inside the receiving cavity, one end of the elastic member is connected to the inner wall of the receiving cavity, and the other end of the elastic member is sleeved on the outside of the supporting member and abuts against the damping structure.

8. The brake pedal device according to claim 1, wherein: The brake pedal device also includes a support, the shell is fixed to the support, one end of the pedal assembly is rotatably connected to the support, the other end of the pedal assembly extends in a direction away from the support, and the first end of the support member is rotatably connected to the middle part of the pedal assembly.

9. The brake pedal device according to claim 8, wherein: The pedal assembly includes a first support arm, a second support arm and a brake pedal. The first support arm and the second support arm are synchronously rotatably arranged on the support. The brake pedal is arranged at an end of the first support arm away from the support. The first end of the support member is rotatably connected to an end of the second support arm away from the support.

10. A vehicle, characterized in that: The invention comprises a brake pedal device according to any one of claims 1 to 9.

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