Brake pedal device and vehicle

Abstract

The embodiment of the application provides a brake pedal device and a vehicle, the brake pedal device comprises a base, a rotating shaft, a pedal arm and a driving mechanism, the base is suitable for being fixed to a vehicle body, the pedal arm is rotatably connected to the base through the rotating shaft, and the driving mechanism can pull the rotating shaft away from the pedal arm when the vehicle occurs front side collision. The brake pedal device of the embodiment of the application, the driving mechanism can pull the rotating shaft away from the pedal arm when the vehicle occurs front side collision. In this way, when the vehicle occurs strong front side collision (for example, offset collision), the rotating shaft and the pedal arm are separated through the driving mechanism, the pedal arm loses the support of the rotating shaft, the pedal arm is separated from the base due to the continuous invasion of the brake booster into the driver's cabin, and the pedal arm cannot rotate to the human foot direction, so that the harm of the pedal arm to the human foot can be greatly reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle braking technology, and in particular to a brake pedal device and a vehicle. Background Technology

[0002] The existing brake pedal structure has a base that is fixed to the vehicle body by bolts, a pedal arm that is welded to a bushing, a pivot that passes through the mounting holes of the base and the bushing and is fixed to a retaining spring, and the pedal arm swings around the pivot.

[0003] When a violent frontal collision (such as an offset collision) occurs in front of a vehicle, the components inside the engine compartment will push the power booster to continuously intrude into the passenger compartment. The power booster pushrod is connected to the pedal arm, but the pivot connection structure is usually quite robust. The powerful impact force will not cause the pivot to break. Instead, it will cause the pedal arm to rotate around the pivot towards the person's feet, causing injury to the feet. Utility Model Content

[0004] This application provides a brake pedal device and vehicle, aiming to improve the existing brake pedal structure, which causes the pedal arm to rotate around the pivot axis towards the foot when a violent frontal collision occurs, resulting in injury to the foot.

[0005] To address the aforementioned issues, this application provides a brake pedal device, comprising a base, a pivot, a pedal arm, and a drive mechanism. The base is adapted to be fixed to the vehicle body, the pedal arm is rotatably connected to the base via the pivot, and the drive mechanism is capable of pulling the pivot away from the pedal arm when a frontal collision occurs.

[0006] In the brake pedal device of this application embodiment, the drive mechanism can pull the pivot shaft away from the pedal arm when a frontal collision occurs. In this way, in the event of a severe frontal collision (such as an offset collision), the drive mechanism separates the pivot shaft from the pedal arm, causing the pedal arm to lose the support of the pivot shaft. As the booster continues to intrude into the passenger compartment, the pedal arm will disengage from the base and will not rotate towards the driver's feet, thus greatly reducing the risk of injury to the driver's feet from the pedal arm.

[0007] In one embodiment, the pivot is fixed relative to the base, the pedal arm is provided with a mounting hole, and the pivot passes through the mounting hole so that the pedal arm can rotate around the pivot.

[0008] The structure with a fixed pivot and rotating pedal arm allows for smoother rotation.

[0009] In one embodiment, the rotating shaft includes a limiting member and a shaft body, the shaft body being connected to one side of the limiting member, the limiting member being fixed to the base, and the shaft body passing through the mounting hole.

[0010] The installation includes a limit switch, which allows the shaft to be fixedly mounted on the base, making installation simple.

[0011] In one embodiment, a bushing is further included, the bushing being sandwiched between the wall of the mounting hole and the outer periphery of the shaft.

[0012] The installation of bushings allows the pedal arm to rub against the bushings during rotation, preventing direct contact with the rigid shaft. This reduces shaft wear and noise during pedal arm rotation.

[0013] In one embodiment, the base is provided with a mounting platform, and a mounting groove is provided on the side of the mounting platform away from the mounting hole. The mounting platform is provided with a through hole that passes through the mounting platform along the axial direction of the rotating shaft, and the end of the through hole away from the mounting hole protrudes from the bottom wall of the mounting groove.

[0014] The shaft passes through the through hole, the limiting member is installed in the mounting groove, and the axial and circumferential displacement of the limiting member along the rotating shaft is restricted by the mounting platform.

[0015] The mounting platform can accommodate the limiting component of the rotating shaft, preventing the shaft from protruding from the platform. Simultaneously, the platform can restrict the axial and circumferential displacement of the limiting component along the shaft, thus fixing the shaft relative to the base.

[0016] In one embodiment, the limiting member includes a limiting plate and a snap-fit ​​member connected to the limiting plate, the snap-fit ​​member being snapped into the mounting platform;

[0017] The drive mechanism can pull the pivot shaft and release the latch between the locking member and the mounting platform when the vehicle is involved in a frontal collision, so that the pivot shaft is disengaged from the pedal arm.

[0018] The locking component of the limiting member is engaged with the mounting platform. In the event of a frontal collision, the drive mechanism pulls the rotating shaft and releases the locking component from the mounting platform, causing the rotating shaft to disengage from the pedal arm. Compared to bolted or riveted connections, the locking force between the locking component and the mounting platform is less, making it easier for the drive mechanism to pull the rotating shaft away from the pedal arm.

[0019] In one embodiment, the snap-fit ​​component includes a ball, a stop block, and a spring. The limiting plate is provided with a receiving hole, the outer end of which is open and protrudes from the outer surface of the limiting plate. The spring and the ball are placed in the receiving hole. The stop block is fixed at the outer end of the receiving hole. The stop block is provided with a through hole, the diameter of which is smaller than the diameter of the ball, so that a portion of the ball can pass through the through hole.

[0020] The mounting groove has a limiting hole in its wall. One end of the limiting hole faces the limiting plate and protrudes from the wall of the mounting groove. The part of the ball that passes through the through hole is engaged in the limiting hole. The drive mechanism can pull the rotating shaft and release the ball from the limiting hole when the vehicle is involved in a frontal collision.

[0021] Normally, the portion of the ball that passes through the through hole is engaged in the limiting hole. This engagement between the ball and the limiting hole restricts the axial and circumferential displacement of the rotating shaft. In the event of a frontal collision, the drive mechanism pulls the rotating shaft, overcoming the engagement force between the ball and the limiting hole. The ball retracts entirely into the receiving hole and compresses the spring, releasing the engagement and allowing the rotating shaft to be pulled away from the pedal arm. This ball-and-limiting-hole engagement method requires less engagement force, facilitating the drive mechanism's removal of the rotating shaft from the pedal arm.

[0022] In one embodiment, the latching element is a snap-fit, the mounting platform is provided with a snap-fit ​​hole, the snap-fit ​​is engaged with the snap-fit ​​hole, and the drive mechanism can pull the rotating shaft and release the snap-fit ​​hole when a frontal collision occurs; or,

[0023] The latching element is a latching hole, and the mounting platform is provided with a latch. The latch engages with the latching hole, and the drive mechanism can pull the rotating shaft and release the latch from the latching hole when a frontal collision occurs; or...

[0024] The locking component is a spring pin, and the groove wall of the mounting slot is provided with a limiting hole. The pin head of the spring pin is engaged in the limiting hole. The drive mechanism can pull the rotating shaft and release the pin head of the spring pin from the limiting hole when a frontal collision occurs; or,

[0025] The snap-fit ​​component is a limiting hole, and the groove wall of the mounting groove is provided with a spring pin. The pin head of the spring pin is snapped into the limiting hole. The drive mechanism can pull the rotating shaft and release the pin head of the spring pin from the limiting hole when the vehicle is involved in a frontal collision.

[0026] The axial and circumferential displacement of the rotating shaft can be restricted by the engagement of the latch and the locking hole (or the engagement of the spring pin head and the limiting hole). In the event of a frontal collision, the drive mechanism pulls the rotating shaft, overcoming the engagement force of the latch and the locking hole (or the engagement of the spring pin head and the limiting hole), causing the latch to disengage from the locking hole (or the spring pin head to disengage from the limiting hole). The engagement is then released, allowing the rotating shaft to be pulled away from the pedal arm. Using the latch and locking hole (or the spring pin head and the limiting hole) engagement method results in a smaller engagement force, making it easier for the drive mechanism to pull the rotating shaft away from the pedal arm.

[0027] In one embodiment, two rotating shafts are provided, the two rotating shafts are coaxial, one rotating shaft is inserted through one end of the mounting hole, and the other rotating shaft is inserted through the other end of the mounting hole;

[0028] The drive mechanism is provided in two parts. One drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision, and the other drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision.

[0029] The use of two pivots provides better support for the pedal arm compared to a single pivot, and is also easier to assemble. Correspondingly, there are two drive mechanisms to pull the two pivots away from the pedal arm in the event of a frontal collision.

[0030] In one embodiment, two rotating shafts are provided, the two rotating shafts are coaxial, and two mounting platforms are provided;

[0031] One of the rotating shafts passes through the through hole of the corresponding mounting platform and is inserted through one end of the mounting hole; the other rotating shaft passes through the through hole of the corresponding mounting platform and is inserted through the other end of the mounting hole.

[0032] The limiting member of one of the rotating shafts is installed in the mounting groove of the corresponding mounting platform, and the limiting member of the other rotating shaft is installed in the mounting groove of the corresponding mounting platform;

[0033] The drive mechanism is provided in two parts. One drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision, and the other drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision.

[0034] The use of two pivots provides better support for the pedal arm compared to a single pivot, and is also easier to assemble. Correspondingly, there are two drive mechanisms to pull the two pivots away from the pedal arm in the event of a frontal collision.

[0035] In one embodiment, the driving mechanism is an electromagnet, and the rotating shaft is a magnetic conductor. The magnetic force generated by the electromagnet when energized can pull the rotating shaft away from the pedal arm when the vehicle is involved in a frontal collision.

[0036] When an electromagnet is energized (the coil is energized), it generates a magnetic force (the iron core becomes magnetized). The iron core attracts the rotating shaft, and the magnetic force can pull the rotating shaft away from the pedal arm. As a driving structure, the electromagnet is simple in structure, easy to implement, and the magnitude of the magnetic force can be easily and precisely controlled.

[0037] In one embodiment, the vehicle also includes a collision sensor and a control unit, wherein the control unit is signal-connected to the drive mechanism and the collision sensor, respectively, and the collision sensor is arranged at the front of the vehicle.

[0038] When the collision sensor detects that the collision force at the front of the vehicle is greater than a preset value, the control unit can control the drive mechanism to operate so that the drive mechanism pulls the pivot shaft away from the pedal arm.

[0039] The drive mechanism is controlled based on the impact force detected by the collision sensor at the front of the vehicle, which avoids malfunctions and is therefore safer and more reliable. The preset value of the impact force needs to be calibrated; for example, the preset value of the impact force should be greater than or equal to 8000N.

[0040] On the other hand, this application also provides a vehicle including the brake pedal device described above. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a brake pedal device provided in an embodiment of this application;

[0042] Figure 2 yes Figure 1 A schematic diagram showing the shaft after it has been separated from the base;

[0043] Figure 3 This is a schematic diagram showing the connection relationship between the pedal arm and the base of a brake pedal device provided in an embodiment of this application;

[0044] Figure 4 yes Figure 3 A schematic diagram after removing part of the structure;

[0045] Figure 5 This is a schematic diagram showing the connection relationship between the pedal arm and the base of a brake pedal device provided in another embodiment of this application;

[0046] Figure 6 yes Figure 5 A schematic diagram showing the section cut along line AA;

[0047] Figure 7 This is a schematic diagram of the structure of the rotating shaft of a brake pedal device provided in one embodiment of this application;

[0048] Figure 8 This is a schematic diagram of the internal structure of the rotating shaft of a brake pedal device provided in an embodiment of this application.

[0049] The reference numerals in the accompanying drawings are as follows:

[0050] 1. Base; 11. Mounting platform; 111. Mounting slot; 1111. Limiting hole; 112. Through hole;

[0051] 2. Rotating shaft; 21. Limiting component; 211. Limiting plate; 2111. Receiving hole; 212. Snap-fit ​​component; 2121. Ball; 2122. Stop block; 2123. Spring; 22. Shaft body;

[0052] 3. Pedal arm; 31. Mounting hole;

[0053] 4. Drive mechanism;

[0054] 5. Bushing. Detailed Implementation

[0055] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0056] See Figures 1 to 8 This application provides a brake pedal device, including a base 1, a pivot 2, a pedal arm 3 and a drive mechanism 4. The base 1 is adapted to be fixed to the vehicle body, the pedal arm 3 is rotatably connected to the base 1 via the pivot 2, and the drive mechanism 4 is capable of pulling the pivot 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision.

[0057] In this embodiment of the brake pedal device, the drive mechanism 4 can pull the pivot 2 away from the pedal arm 3 when a frontal collision occurs. In this way, in the event of a severe frontal collision (e.g., an offset collision), the drive mechanism 4 separates the pivot 2 from the pedal arm 3. As a result, the pedal arm 3 loses the support of the pivot 2, and the continuous intrusion of the booster into the cab causes the pedal arm 3 to detach from the base 1, preventing it from rotating towards the driver's feet. This greatly reduces the risk of injury to the driver's feet caused by the pedal arm 3.

[0058] In one embodiment, the rotating shaft 2 is fixed relative to the base 1, and the pedal arm 3 is provided with a mounting hole 31. The rotating shaft 2 passes through the mounting hole 31 so that the pedal arm 3 can rotate around the rotating shaft 2.

[0059] The structure of fixed pivot 2 and rotating pedal arm 3 makes rotation smoother.

[0060] In one embodiment, see Figure 4 The rotating shaft 2 includes a limiting member 21 and a shaft body 22. The shaft body 22 is connected to one side of the limiting member 21. The limiting member 21 is fixed to the base 1. The shaft body 22 passes through the mounting hole 31.

[0061] The limiting component 21 is provided to fix the rotating shaft 2 to the base 1, making installation simple.

[0062] In one embodiment, see Figure 6It also includes a bushing 5, which is sandwiched between the wall of the mounting hole 31 and the outer periphery of the shaft 22.

[0063] The bushing 5 is installed so that the pedal arm 3 rubs against the bushing 5 when it rotates, and does not directly contact the rigid shaft 2. This reduces the wear of the shaft 2 and also reduces the noise when the pedal arm 3 rotates.

[0064] In one embodiment, see Figure 6 The base 1 is provided with a mounting platform 11. The mounting platform 11 is provided with a mounting groove 111 on the side away from the mounting hole 31. The mounting platform 11 is provided with a through hole 112 that passes through the mounting platform 11 along the axial direction of the rotating shaft 2. The end of the through hole 112 away from the mounting hole 31 is exposed on the bottom wall of the mounting groove 111. The shaft 22 passes through the through hole 112. The limiting member 21 is installed in the mounting groove 111, and the displacement of the limiting member 21 along the axial and circumferential directions of the rotating shaft 2 is limited by the mounting platform 11.

[0065] Mounting platform 11 can accommodate the limiting member 21 of the rotating shaft 2, preventing the rotating shaft 2 from protruding from the mounting platform 11. At the same time, mounting platform 11 can limit the axial and circumferential displacement of the limiting member 21 along the rotating shaft 2, so that the rotating shaft 2 is fixed relative to the base 1.

[0066] In one embodiment, see Figure 6 and Figure 7 The limiting member 21 includes a limiting plate 211 and a snap-fit ​​member 212 connected to the limiting plate 211. The snap-fit ​​member 212 is snapped into the mounting platform 11. The drive mechanism 4 can pull the rotating shaft 2 and release the snap-fit ​​member 212 from the mounting platform 11 when the vehicle is involved in a frontal collision, so that the rotating shaft 2 is disengaged from the pedal arm 3.

[0067] The locking member 212 of the limiting member 21 is locked to the mounting platform 11. When the vehicle is involved in a frontal collision, the drive mechanism 4 can pull the rotating shaft 2 and release the locking member 212 from the mounting platform 11, causing the rotating shaft 2 to disengage from the pedal arm 3. Compared with bolted or riveted connections, the locking force between the locking member 212 and the mounting platform 11 is smaller, making it easier for the drive mechanism 4 to pull the rotating shaft 2 away from the pedal arm 3.

[0068] In one embodiment, see Figure 7 and Figure 8The snap-fit ​​component 212 includes a ball 2121, a stop block 2122, and a spring 2123. The limiting plate 211 is provided with a receiving hole 2111, the outer end opening of the receiving hole 2111 protruding from the outer surface of the limiting plate 2111. The spring 2123 and the ball 2121 are placed in the receiving hole 2111. The stop block 2122 is fixed at the outer end opening of the receiving hole 2111. The stop block 2122 is provided with a through hole, the diameter of which is smaller than the diameter of the ball 2121, so that a part of the ball 2121 can pass through the through hole. The groove wall of the mounting groove 111 is provided with a limiting hole 1111, the end of the limiting hole 1111 facing the limiting plate 211 is open and protruding from the groove wall of the mounting groove 111. The part of the ball 2121 that passes through the through hole is snapped into the limiting hole 1111. The drive mechanism 4 can pull the rotating shaft 2 and release the snap-fit ​​between the ball 2121 and the limiting hole 1111 when the vehicle is involved in a frontal collision.

[0069] Normally, the portion of ball 2121 passing through the through hole is engaged in the limiting hole 1111. This engagement between ball 2121 and the limiting hole 1111 effectively restricts the axial and circumferential displacement of the rotating shaft 2. In the event of a frontal collision, the drive mechanism 4 pulls the rotating shaft 2, overcoming the engagement force between ball 2121 and the limiting hole 1111. Ball 2121 retracts entirely into the receiving hole 2111 and compresses the spring 2123, releasing the engagement between ball 2121 and the limiting hole 1111, allowing the rotating shaft 2 to be pulled away from the pedal arm 3. This engagement method between ball 2121 and the limiting hole 1111 results in a smaller engagement force, facilitating the drive mechanism 4's removal of the rotating shaft 2 from the pedal arm 3.

[0070] In another embodiment (not shown), the snap-fit ​​212 is a snap-fit, the mounting platform 11 is provided with a snap-fit ​​hole, the snap-fit ​​is snapped into the snap-fit ​​hole, and the drive mechanism 4 can pull the rotating shaft 2 and release the snap-fit ​​from the snap-fit ​​hole when the vehicle is involved in a frontal collision.

[0071] In another embodiment (not shown), the snap-fit ​​212 is a snap-fit ​​hole, and the mounting platform 11 is provided with a buckle. The buckle snaps into the snap-fit ​​hole, and the drive mechanism 4 can pull the rotating shaft 2 and release the snap-fit ​​hole when the vehicle is involved in a frontal collision.

[0072] The axial and circumferential displacement of the rotating shaft 2 is restricted by the engagement of the latch and the locking hole. In the event of a frontal collision, the drive mechanism 4 pulls the rotating shaft 2, overcoming the engagement force between the latch and the locking hole, causing the latch to disengage from the locking hole. Once the engagement is released, the rotating shaft 2 can be pulled away from the pedal arm 3. This latch-and-lock engagement method requires less engagement force, making it easier for the drive mechanism 4 to pull the rotating shaft 2 away from the pedal arm 3.

[0073] In another embodiment (not shown), the snap-fit ​​212 is a spring pin, and the groove wall of the mounting groove 111 is provided with a limiting hole 1111. The pin head of the spring pin is snapped into the limiting hole 1111. When the vehicle is involved in a frontal collision, the drive mechanism 4 can pull the rotating shaft 2 and release the snap-fit ​​between the pin head of the spring 2123 and the limiting hole 1111.

[0074] In another embodiment (not shown), the snap-fit ​​212 is a limiting hole 1111, and the groove wall of the mounting groove 111 is provided with a spring pin. The pin head of the spring pin is snapped into the limiting hole 1111. The drive mechanism 4 can pull the rotating shaft 2 and release the pin head of the spring pin from the limiting hole 1111 when the vehicle is involved in a frontal collision.

[0075] The axial and circumferential displacement of the rotating shaft 2 is restricted by the engagement of the spring pin head with the limiting hole 1111. In the event of a frontal collision, the drive mechanism 4 pulls the rotating shaft 2, overcoming the engagement force between the spring pin head and the limiting hole 1111, causing the spring pin head to disengage from the limiting hole 1111. The engagement between the spring pin head and the limiting hole 1111 is released, allowing the rotating shaft 2 to be pulled away from the pedal arm 3. The engagement method using the spring pin and the limiting hole 1111 results in a smaller engagement force, facilitating the drive mechanism 4 to pull the rotating shaft 2 away from the pedal arm 3.

[0076] In one embodiment, see Figure 2 and Figure 6 There are two rotating shafts 2, which are coaxial. One rotating shaft 2 is inserted through one end of the mounting hole 31, and the other rotating shaft 2 is inserted through the other end of the mounting hole 31.

[0077] There are two drive mechanisms 4. One drive mechanism 4 can pull the corresponding pivot 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision. The other drive mechanism 4 can pull the corresponding pivot 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision.

[0078] The use of two pivots 2 provides better support for the pedal arm 3 compared to a single pivot 2, and is also easier to assemble. Correspondingly, two drive mechanisms 4 are provided to pull the two pivots 2 away from the pedal arm 3 in the event of a frontal collision.

[0079] In one embodiment, there are two rotating shafts 2, which are coaxial, and there are two mounting platforms 11;

[0080] One of the shafts 2 has its shaft body 22 passing through the through hole 112 of the corresponding mounting platform 11 and being inserted through one end of the mounting hole 31; the other shaft 2 has its shaft body 22 passing through the through hole 112 of the corresponding mounting platform 11 and being inserted through the other end of the mounting hole 31.

[0081] One of the limiting members 21 of the rotating shaft 2 is installed in the mounting groove 111 of the corresponding mounting platform 11, and the other limiting member 21 of the rotating shaft 2 is installed in the mounting groove 111 of the corresponding mounting platform 11.

[0082] There are two drive mechanisms 4. One drive mechanism 4 can pull the corresponding pivot 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision. The other drive mechanism 4 can pull the corresponding pivot 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision.

[0083] The use of two pivots 2 provides better support for the pedal arm 3 compared to a single pivot 2, and is also easier to assemble. Correspondingly, two drive mechanisms 4 are provided to pull the two pivots 2 away from the pedal arm 3 in the event of a frontal collision.

[0084] In one embodiment, the drive mechanism 4 is an electromagnet, and the rotating shaft 2 is a magnetic conductor. The magnetic force generated by the electromagnet when it is energized can pull the rotating shaft 2 away from the pedal arm 3 when the vehicle is involved in a frontal collision.

[0085] When the electromagnet is energized (the coil is energized), the magnetic force generated (the iron core is magnetized) attracts the rotating shaft 2, and the magnetic force can pull the rotating shaft 2 away from the pedal arm 3. As a driving structure, the electromagnet is simple in structure, easy to implement, and the magnitude of the magnetic force can be easily and precisely controlled.

[0086] In another embodiment, the drive mechanism 4 is a pneumatic cylinder. The piston rod of the pneumatic cylinder is connected to the rotating shaft 2, and the piston of the pneumatic cylinder is pushed by air pressure to move away from the rotating shaft 2, thereby causing the piston rod to pull the rotating shaft 2.

[0087] In another embodiment, the drive mechanism 4 is a hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to the rotating shaft 2, and hydraulic pressure pushes the piston of the hydraulic cylinder to move away from the rotating shaft 2, thereby causing the piston rod to pull the rotating shaft 2.

[0088] In another embodiment, the drive mechanism 4 is an electric cylinder. The output end of the electric cylinder is a lead screw nut, which is connected to the rotating shaft 2. When the motor of the electric cylinder rotates, it drives the lead screw to rotate, causing the lead screw nut to move along the lead screw, thereby pulling the rotating shaft 2.

[0089] In one embodiment, a collision sensor and a control unit are also included. The control unit is connected to the drive mechanism 4 and the collision sensor, respectively. The collision sensor is located at the front of the vehicle.

[0090] When the collision sensor detects that the collision force at the front of the vehicle is greater than a preset value, the control unit can control the drive mechanism 4 to work so that the drive mechanism 4 pulls the pivot 2 away from the pedal arm 3.

[0091] The drive mechanism 4 is controlled based on the collision force detected by the collision sensor at the front of the vehicle, which avoids malfunction of the drive mechanism 4 and makes it safer and more reliable. The preset value of the collision force needs to be calibrated, for example, the preset value of the collision force is greater than or equal to 8000N.

[0092] Furthermore, this application also provides a vehicle including the brake pedal device described in the above embodiments.

[0093] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A brake pedal device, characterized in that, The device includes a base, a pivot, a pedal arm, and a drive mechanism. The base is adapted to be fixed to the vehicle body, the pedal arm is rotatably connected to the base via the pivot, and the drive mechanism is capable of pulling the pivot away from the pedal arm in the event of a frontal collision.

2. The brake pedal device according to claim 1, characterized in that, The rotating shaft is fixed relative to the base, and the pedal arm is provided with a mounting hole. The rotating shaft passes through the mounting hole so that the pedal arm can rotate around the rotating shaft.

3. The brake pedal device according to claim 2, characterized in that, The rotating shaft includes a limiting member and a shaft body. The shaft body is connected to one side of the limiting member, the limiting member is fixed to the base, and the shaft body passes through the mounting hole.

4. The brake pedal device according to claim 3, characterized in that, It also includes a bushing, which is sandwiched between the wall of the mounting hole and the outer periphery of the shaft.

5. The brake pedal device according to claim 3, characterized in that, The base is provided with a mounting platform, and a mounting groove is provided on the side of the mounting platform away from the mounting hole. The mounting platform is provided with a through hole that passes through the mounting platform along the axial direction of the rotating shaft, and the end of the through hole away from the mounting hole protrudes from the bottom wall of the mounting groove. The shaft passes through the through hole, the limiting member is installed in the mounting groove, and the axial and circumferential displacement of the limiting member along the rotating shaft is restricted by the mounting platform.

6. The brake pedal device according to claim 5, characterized in that, The limiting component includes a limiting plate and a snap-fit ​​component connected to the limiting plate, wherein the snap-fit ​​component snaps into the mounting platform; The drive mechanism can pull the pivot shaft and release the latch between the locking member and the mounting platform when the vehicle is involved in a frontal collision, so that the pivot shaft is disengaged from the pedal arm.

7. The brake pedal device according to claim 6, characterized in that, The snap-fit ​​component includes a ball, a stop block, and a spring. The limiting plate is provided with a receiving hole, the outer end of which is open and protrudes from the outer surface of the limiting plate. The spring and the ball are placed in the receiving hole. The stop block is fixed at the outer end of the receiving hole. The stop block is provided with a through hole, the diameter of which is smaller than the diameter of the ball, so that a part of the ball can pass through the through hole. The mounting groove has a limiting hole in its wall. One end of the limiting hole faces the limiting plate and protrudes from the wall of the mounting groove. The part of the ball that passes through the through hole is engaged in the limiting hole. The drive mechanism can pull the rotating shaft and release the ball from the limiting hole when the vehicle is involved in a frontal collision.

8. The brake pedal device according to claim 6, characterized in that, The latching component is a snap-fit, and the mounting platform is provided with a snap-fit ​​hole. The snap-fit ​​is engaged with the snap-fit ​​hole, and the drive mechanism can pull the rotating shaft and release the snap-fit ​​hole when a frontal collision occurs; or... The latching element is a latching hole, and the mounting platform is provided with a latch. The latch engages with the latching hole, and the drive mechanism can pull the rotating shaft and release the latch from the latching hole when a frontal collision occurs; or... The locking component is a spring pin, and the groove wall of the mounting slot is provided with a limiting hole. The pin head of the spring pin is engaged in the limiting hole. The drive mechanism can pull the rotating shaft and release the pin head of the spring pin from the limiting hole when a frontal collision occurs; or, The snap-fit ​​component is a limiting hole, and the groove wall of the mounting groove is provided with a spring pin. The pin head of the spring pin is snapped into the limiting hole. The drive mechanism can pull the rotating shaft and release the pin head of the spring pin from the limiting hole when the vehicle is involved in a frontal collision.

9. The brake pedal device according to claim 2, characterized in that, The rotating shaft is provided in two coaxially, with one rotating shaft passing through one end of the mounting hole and the other rotating shaft passing through the other end of the mounting hole; The drive mechanism is provided in two parts. One drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision, and the other drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision.

10. The brake pedal device according to claim 5, characterized in that, There are two rotating shafts, and the two rotating shafts are coaxial; there are also two mounting platforms. One of the rotating shafts passes through the through hole of the corresponding mounting platform and is inserted through one end of the mounting hole; the other rotating shaft passes through the through hole of the corresponding mounting platform and is inserted through the other end of the mounting hole. The limiting member of one of the rotating shafts is installed in the mounting groove of the corresponding mounting platform, and the limiting member of the other rotating shaft is installed in the mounting groove of the corresponding mounting platform; The drive mechanism is provided in two parts. One drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision, and the other drive mechanism can pull the corresponding pivot shaft away from the pedal arm when the vehicle is involved in a frontal collision.

11. The brake pedal device according to claim 1, characterized in that, The driving mechanism is an electromagnet, and the rotating shaft is a magnetic conductor. The magnetic force generated by the electromagnet when it is energized can pull the rotating shaft away from the pedal arm when the vehicle is involved in a frontal collision.

12. The brake pedal device according to claim 1, characterized in that, It also includes a collision sensor and a control unit, wherein the control unit is signal-connected to the drive mechanism and the collision sensor respectively, and the collision sensor is arranged at the front of the vehicle; When the collision sensor detects that the collision force at the front of the vehicle is greater than a preset value, the control unit can control the drive mechanism to operate so that the drive mechanism pulls the pivot shaft away from the pedal arm.

13. A vehicle, characterized in that, Includes the brake pedal device according to any one of claims 1-12.

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