Brake pedal and vehicle

Abstract

The invention provides a brake pedal and a vehicle, and belongs to the technical field of vehicle brake pedals. The trigger bracket is rotatably connected with the base; the trigger bracket at the working position and the base are circumferentially fixed through the circumferential locking piece; the circumferential locking piece is set to be fractured and allow the triggering support to rotate relative to the base when the shearing force borne by the circumferential locking piece is larger than a fracture threshold value; the pedal arm is hinged to the trigger support through a pedal shaft, and the rotation center of the pedal shaft and the rotation center of the trigger support are eccentrically arranged. The pedal has the advantages that the structure is simple, the manufacturing requirement is low, the weight is large, the cost is low, breakage of the circumferential locking piece can be triggered and the triggering support can rotate when a vehicle is impacted, the spatial position of the pedal shaft can be changed through rotation of the triggering support, then the pedal arm crumples, the invasion amount is reduced, the mechanism is very sensitive and reliable, and the service life of the pedal is prolonged. And the invasion amount of the pedal arm can be greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle brake pedals and relates to a brake pedal and a vehicle. Background Art

[0002] The brake pedal is a vehicle braking component. When the brake pedal is pressed, the pedal force is transmitted to the wheel brakes through the hydraulic system (boost pump). In the vehicle collision safety standard C-NCAP, it is stipulated that when a vehicle is in a frontal collision, the pedal cover including the brake pedal shall not have excessive displacement (intrusion) in the collision. For example, the backward and upward displacement (intrusion) of the pedal cover in a frontal collision shall not exceed a certain limit to reduce damage to the driver's legs.

[0003] At present, the models use collapsible brake pedals or "broken arm designs", in which the pedals break or move back through a preset breaking point during a collision, thereby reducing the damage to the legs. This type of design is complex in structure, has high manufacturing requirements, is heavy in weight and has high costs. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems in the prior art and to provide a brake pedal and a vehicle.

[0005] The object of the present invention can be achieved through the following technical solutions: A brake pedal, comprising:

[0006] Pedestal;

[0007] A trigger bracket, the trigger bracket is rotatably connected to the base, and the angular travel position of the trigger bracket relative to the base includes a working position;

[0008] a circumferential locking member, wherein the trigger bracket in the working position is circumferentially fixed to the base through the circumferential locking member; the circumferential locking member is configured to break and allow the trigger bracket to rotate relative to the base when the shear force applied thereto is greater than a breaking threshold;

[0009] A pedal arm, the pedal arm is rotatably mounted on the trigger bracket via a pedal shaft, and the pedal shaft is eccentrically disposed with respect to the rotation center of the trigger bracket;

[0010] When a vehicle collision causes the circumferential torque borne by the trigger bracket to exceed a threshold, the circumferential locking piece breaks, the trigger bracket rotates relative to the base, and forces the pedal shaft to rotate around the rotation center of the trigger bracket, causing the pedal arm to deflect in a direction to reduce the intrusion amount.

[0011] Preferably, the pedal arm has a fulcrum portion for connecting with the push rod of the booster pump, and the pedal shaft and the stepping portion of the pedal arm are respectively located at both ends of the fulcrum portion; when the circumferential locking member breaks and releases the circumferential locking of the trigger bracket and the base, the pedal arm forms a lever structure with the fulcrum portion as the fulcrum; when the trigger bracket drives the pedal shaft to rotate around the rotation center of the trigger bracket, the pedal arm swings in the direction of reducing the intrusion amount with the fulcrum portion as the fulcrum.

[0012] Preferably, rotation holes are provided on both sides of the base, and rotation portions are provided on both sides of the trigger bracket. The two rotation portions are respectively inserted into the two rotation holes, and the rotation portion is rotatably connected to the rotation hole.

[0013] Preferably, first pin holes are provided on both sides of the base, and the two first pin holes communicate with the two rotation holes respectively. Second pin holes are provided on the two rotation portions of the trigger bracket; when the trigger bracket is in the working position, the first pin hole and the second pin hole are coaxially arranged and communicate to form a locking hole, and a circumferential locking member is arranged in the locking hole, and the circumferential locking member restricts the rotation of the rotation portion relative to the base by its own rigidity.

[0014] Preferably, the trigger bracket has a collision force-receiving portion.

[0015] Preferably, the trigger bracket is arranged in a U-shaped structure. The trigger bracket includes two L-shaped bracket members. One ends of the two bracket members are spliced to form the collision force-receiving portion, and the two rotation portions are respectively located at the other ends of the two bracket members.

[0016] Preferably, eccentric shaft holes are provided on both rotation portions, and the two eccentric shaft holes are coaxially arranged. Both ends of the pedal shaft are respectively connected to the two eccentric shaft holes.

[0017] Preferably, the pedal shaft is fixedly connected to the pedal arm, and the end of the pedal shaft is rotatably connected to the eccentric shaft hole.

[0018] Preferably, the base is arranged in a suspended structure, and the base has a mounting surface; when the trigger bracket is in the working position, the pedal shaft is in the position with the shortest distance from the mounting surface; when a vehicle collision causes the trigger bracket to rotate, the pedal shaft rotates away from the mounting surface, causing the stepping portion of the pedal arm to move towards the mounting surface to reduce the intrusion amount.

[0019] A vehicle comprises a brake pedal and a vehicle body, wherein the brake pedal is suspendedly mounted in the vehicle body, and a trigger member is provided in the vehicle body; when a vehicle collision causes the intrusion amount of the brake pedal to reach a threshold value, a collision force-bearing portion of a trigger bracket collides with the trigger member, causing the pedal arm to deflect.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This design has a simple structure, low manufacturing requirements, high weight and low cost. When a vehicle collides, it can trigger the breakage of the circumferential locking member and cause the trigger bracket to rotate. Since the pedal shaft is an eccentric structure, the rotation of the trigger bracket can change the spatial position of the pedal shaft, thereby causing the pedal arm to collapse and reduce the intrusion amount. This mechanism is very sensitive and reliable, and can significantly reduce the intrusion amount of the pedal arm.

[0022] 2. The circumferential locking piece is designed to break when the shear force it bears exceeds a certain threshold. Once the trigger bracket is subjected to sufficient force to cause the circumferential locking piece to break, the break generally occurs at the position of the circumferential locking piece between the first pin hole and the second pin hole, so the trigger bracket can rotate freely relative to the base.

[0023] 3. The main purpose of the collision force-bearing part is to respond quickly and effectively when the vehicle encounters a collision, and to initiate the rotation of the trigger bracket by colliding with the trigger member, thereby releasing the locked state of the brake pedal system and reducing the risk of injury to the driver's legs.

[0024] 4. The trigger bracket is designed to consist of two independent L-shaped bracket pieces. This split design allows the rotating block on each L-shaped bracket piece to be connected to the rotating holes on both sides of the base first. After ensuring that each rotating block is correctly inserted into the corresponding rotating hole, the two L-shaped bracket pieces can be firmly spliced ​​together by screws or other fixing devices to complete the assembly of the entire trigger bracket.

[0025] 5. The eccentric principle is used to convert the rotational motion of the trigger bracket into the displacement of the pedal shaft relative to the base, and then the lever mechanism is used to convert the displacement of the pedal shaft into the displacement of the pedal arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural exploded view of the base and the trigger bracket of the present invention.

[0027] Figure 2 It is a structural exploded view of the brake pedal of the present invention.

[0028] Figure 3 The figure is a schematic diagram of the positions of the rotating block and the rotating hole when the brake pedal of the present invention is in a working state.

[0029] Figure 4 Schematic diagram of the connection relationship between the trigger bracket and the base of the present invention.

[0030] Figure 5 Schematic diagram of the brake pedal of the present invention in the normal state.

[0031] Figure 6 Schematic diagram of the brake pedal of the present invention after a collision.

[0032] Figure 7 Schematic diagram of the positions of the rotating block and the rotating hole of the brake pedal of the present invention after a collision.

[0033] Figure 8 Schematic diagram of the position of the pedal shaft of the brake pedal of the present invention after a collision.

[0034] Figure 9 Schematic diagram of the position of the brake pedal and the trigger member of the present invention.

[0035] In the figure, 100, base; 110, rotating hole; 120, first pin hole; 130, mounting surface; 200, trigger bracket; 210, rotating part; 211, eccentric shaft hole; 220, second pin hole; 230, collision force-receiving part; 240, bracket member; 300, circumferential locking member; 400, pedal arm; 410, fulcrum part; 420, pedal shaft; 500, trigger member. Detailed implementation manners

[0036] The following are specific embodiments of the present invention and, in combination with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0037] As Figures 1 to 9 shown, a brake pedal includes: a base 100; a trigger bracket 200, the trigger bracket 200 is rotatably connected to the base 100, and the angular stroke position of the trigger bracket 200 relative to the base 100 includes a working position; a circumferential locking member 300, the trigger bracket 200 in the working position is circumferentially fixed to the base 100 through the circumferential locking member 300; the circumferential locking member 300 is configured to break when the shear force it receives is greater than the fracture threshold and allow the trigger bracket 200 to rotate relative to the base 100; a pedal arm 400, the pedal arm 400 is rotatably mounted on the trigger bracket 200 through a pedal shaft 420, and the pedal shaft 420 is eccentrically arranged with respect to the rotation center of the trigger bracket 200; when a vehicle collision causes the circumferential torque borne by the trigger bracket 200 to exceed the threshold, the circumferential locking member 300 breaks, the trigger bracket 200 rotates relative to the base 100, and forces the pedal shaft 420 to rotate around the rotation center of the trigger bracket 200, causing the pedal arm 400 to deflect in the direction of reducing the intrusion amount.

[0038] The base 100 is the fixed part of the entire brake pedal; the trigger bracket 200 is a key component that can rotate relative to the base 100. The angular stroke of the trigger bracket 200 includes a specific working position and a movement range of the non-working position. In this working position, the trigger bracket 200 and the base 100 are kept relatively fixed by the circumferential locking member 300. The circumferential locking member 300 is an important component to ensure the circumferential locking between the trigger bracket 200 and the base 100. It is designed to break when the shear force it bears exceeds a certain threshold (fracture threshold), thereby releasing the circumferential fixing relationship between the trigger bracket 200 and the base 100, which allows the trigger bracket 200 to rotate freely under specific circumstances (such as vehicle collision).

[0039] The pedal arm 400 is the part directly acted on by the driver. The pedal arm 400 is hinged to the trigger bracket 200 through the pedal shaft 420. When the circumferential locking member 300 remains intact (i.e., the trigger bracket 200 and the base 100 maintain circumferential locking), the pedal shaft 420 can only rotate relative to the trigger bracket 200 and cannot displace relative to the base 100. The special feature of this design is that the rotation center of the pedal shaft 420 and the trigger bracket 200 is eccentrically arranged, which means that when the trigger bracket 200 rotates due to collision, it will force the pedal shaft 420 to rotate around the rotation center of the trigger bracket 200. At this time, the pedal shaft 420 generates a displacement relative to the base 100, and then the pedal arm 400 deflects.

[0040] Under normal driving conditions, the trigger bracket 200 and the base 100 are tightly connected by the circumferential locking member 300 to ensure that there is no relative rotation between the two. This means that the pedal shaft 420 cannot generate any displacement relative to the base 100 in such a state, ensuring the stability and responsiveness of the braking system. When the driver steps on the stepping part of the pedal arm 400, the entire pedal arm 400 rotates around the fixed pedal shaft 420 to complete the normal braking operation.

[0041] However, in the case of a vehicle collision, the entire brake pedal system may be subjected to a backward impact force, causing it to intrude into the cab as a whole. At this time, the trigger bracket 200 collides with the trigger member 500 during the intrusion process and has a tendency to rotate around its own rotation center. This rotational tendency exerts a shear force on the circumferential locking member 300. If this shear force exceeds the preset fracture threshold of the circumferential locking member 300, then the circumferential locking member 300 will break. Once the circumferential locking member 300 breaks, the trigger bracket 200 is no longer fixed to the base 100 and can thus rotate freely relative to the base 100.

[0042] As the trigger bracket 200 rotates, it drives the pedal shaft 420 hinged to it to move together. Since the rotation centers of the pedal shaft 420 and the trigger bracket 200 adopt an eccentric design, the pedal shaft 420 generates a displacement relative to the base 100 during the process of following the rotation of the trigger bracket 200. This displacement further causes a change in the position of the pedal arm 400, making it shift in the direction away from the driver (i.e., forward). This shift helps to reduce the potential risk of harm to the driver's legs caused by brake pedal intrusion, effectively reducing the intrusion amount and enhancing the vehicle collision safety. Therefore, this design cleverly utilizes the change of the mechanical structure to provide additional safety protection for the driver at a critical moment.

[0043] By adopting the design of the pedal shaft 420 with an eccentric setting, when the trigger bracket 200 starts to rotate, it can effectively push the pedal arm 400 in the direction away from the driver (i.e., forward shift), and can reduce the intrusion amount of the pedal arm 400 to a greater extent. The design of the circumferential locking member 300 takes into account that it will not break easily under normal driving conditions and will only play a role in extreme situations (such as vehicle collision). This ensures the stability and reliability during daily use and has a high sensitivity. The rotation of the trigger bracket 200 and the offset of the pedal arm 400 form a linkage, without relying on electronic sensors or active control, and the pure mechanical structure responds more quickly and reliably. Therefore, this design has a simple structure, low manufacturing requirements, heavy weight and low cost.

[0044] On the basis of the above embodiments, the pedal arm 400 has a fulcrum portion 410 for connecting with the push rod of the booster pump, and the pedal shaft 420 and the stepping portion of the pedal arm 400 are respectively located at both ends of the fulcrum portion 410; when the circumferential locking member 300 breaks and releases the circumferential locking of the trigger bracket 200 and the base 100, the pedal arm 400 forms a lever structure with the fulcrum portion 410 as the fulcrum; when the trigger bracket 200 drives the pedal shaft 420 to rotate around the rotation center of the trigger bracket 200, the pedal arm 400 swings in the direction of reducing the intrusion amount with the fulcrum portion 410 as the fulcrum.

[0045] Under normal operation, when the driver steps on the stepping portion of the pedal arm 400, the fulcrum portion 410 will exert pressure on the booster pump, thereby activating the braking system. When the circumferential locking member 300 breaks, the fixed relationship between the trigger bracket 200 and the base 100 is released, allowing the trigger bracket 200 to rotate relative to the base 100. At this time, the pedal arm 400 forms a lever structure with the fulcrum portion 410 as the fulcrum. Therefore, when the pedal shaft 420 (one end of the pedal arm 400) is displaced, the entire pedal arm 400 swings around the fulcrum portion 410, thereby driving the stepping portion (the other end of the pedal arm 400) of the pedal arm 400 to shift.

[0046] As Figures 1 to 9As shown, on the basis of the above-described embodiment, rotation holes 110 are provided on both sides of the base 100, and rotation portions 210 are provided on both sides of the trigger bracket 200. The two rotation portions 210 are respectively inserted into the two rotation holes 110, and the rotation portion 210 is rotatably connected to the rotation hole 110.

[0047] The rotation hole 110 is a circular hole, and the rotation portion 210 is a circular protrusion structure. The rotation portion 210 is inserted into the rotation hole 110, and the rotation portion 210 can rotate within the rotation hole 110, so that the trigger bracket 200 is hinged to the base 100.

[0048] On the basis of the above-described embodiment, first pin holes 120 are provided on both sides of the base 100. The two first pin holes 120 communicate with the two rotation holes 110 respectively, and second pin holes 220 are provided on the two rotation portions 210 of the trigger bracket 200; when the trigger bracket 200 is in the working position, the first pin hole 120 and the second pin hole 220 are coaxially arranged and communicate to form a locking hole, and a circumferential locking member 300 is arranged in the locking hole. The circumferential locking member 300 restricts the rotation of the rotation portion 210 relative to the base 100 by its own rigidity.

[0049] The first pin hole 120 extends along the radial direction of the rotation hole 110, the second pin hole 220 extends along the radial direction of the rotation portion 210, and the circumferential locking member 300 is inserted into the locking hole formed by the first pin hole 120 and the second pin hole 220. It restricts the rotation of the rotation portion 210 relative to the base 100 by its own rigidity, so as to ensure that the trigger bracket 200 remains stationary under normal operating conditions.

[0050] The circumferential locking member 300 is designed to break when the shear force it bears exceeds a certain threshold. Once the trigger bracket 200 is subjected to sufficient force to cause the circumferential locking member 300 to break, the break generally occurs at the portion of the circumferential locking member 300 between the first pin hole 120 and the second pin hole 220, so that the trigger bracket 200 can rotate freely relative to the base 100.

[0051] On the basis of the above-described embodiment, the trigger bracket 200 has a collision force-receiving portion 230.

[0052] The main purpose of the collision force-receiving portion 230 is to act as a force-receiving portion when the vehicle encounters a collision. The collision force-receiving portion 230 starts the rotation of the trigger bracket 200 by colliding with the trigger member 500, thereby releasing the locked state of the brake pedal system and reducing the risk of injury to the driver's leg.

[0053] On the basis of the above - mentioned embodiments, the trigger bracket 200 is arranged in a U - shaped structure. The trigger bracket 200 includes two L - shaped bracket members 240. One end of the two bracket members 240 is spliced to form a collision - force - receiving part 230, and the two rotating parts 210 are respectively located at the other ends of the two bracket members 240.

[0054] The trigger bracket 200 adopts a split - type design (formed by splicing two L - shaped bracket members 240) instead of an integral structure, which is for the convenience of installation. Since the two rotating blocks of the trigger bracket 200 need to be precisely inserted into the rotating holes 110 on both sides of the base 100, if the trigger bracket 200 adopts an integral structure, it is difficult to achieve such precise assembly. Therefore, the trigger bracket 200 is designed to be composed of two independent L - shaped bracket members 240. This split - type design allows the rotating blocks on each L - shaped bracket member 240 to be first connected to the rotating holes 110 on both sides of the base 100 respectively. After ensuring that each rotating block is correctly inserted into the corresponding rotating hole 110, the two L - shaped bracket members 240 can be firmly spliced together by screws or other fixing devices, thus completing the assembly of the entire trigger bracket 200.

[0055] On the basis of the above - mentioned embodiments, both of the two rotating parts 210 are provided with eccentric shaft holes 211, and the two eccentric shaft holes 211 are coaxially arranged. The two ends of the pedal shaft 420 are respectively connected to the two eccentric shaft holes 211.

[0056] To ensure that the pedal shaft 420 can be smoothly inserted and work properly, the eccentric shaft holes 211 on the two rotating parts 210 must be precisely coaxially arranged. This can ensure that the pedal shaft 420 remains linearly aligned between the two rotating parts 210.

[0057] The eccentric shaft hole 211 on each rotating part 210 is not located at the rotation center of the rotating part 210, but at a position deviating from the rotation center. This means that when the pedal shaft 420 is installed in these two eccentric shaft holes 211, it has a certain offset relative to the rotation center of the rotating part 210. When the rotating part 210 rotates around its own rotation center, the pedal shaft 420 will also rotate around the rotation center of the rotating part 210, and thus generate a displacement relative to the base 100.

[0058] It should be emphasized that this design utilizes the eccentric principle to convert the rotational motion of the trigger bracket 200 into the displacement of the pedal shaft 420 relative to the base 100, and then uses the lever mechanism to convert the displacement of the pedal shaft 420 into the displacement of the pedal arm 400. Specifically, when the trigger bracket 200 rotates due to a collision, the eccentrically - arranged pedal shaft 420 will force the pedal arm 400 to swing with the fulcrum part 410 as the fulcrum, causing it to deflect in the direction of reducing the intrusion amount.

[0059] Based on the above-described embodiments, the pedal shaft 420 is fixedly connected to the pedal arm 400, and the end of the pedal shaft 420 is rotatably connected to the eccentric shaft hole 211.

[0060] Based on the above-described embodiments, the base 100 is provided as a suspended structure, and the base 100 has a mounting surface 130; when the trigger bracket 200 is in the working position, the pedal shaft 420 is in the position closest to the mounting surface 130; when a vehicle collision causes the trigger bracket 200 to rotate, the pedal shaft 420 rotates away from the mounting surface 130, causing the stepping portion of the pedal arm 400 to move toward the mounting surface 130, thereby reducing the intrusion amount.

[0061] The base 100 is designed as a suspended structure, that is, the mounting surface 130 of the base 100 is mounted on a vertical surface. When the trigger bracket 200 is in the working position, the pedal shaft 420 is located at the position closest to the mounting surface 130, which means that under normal conditions, the stepping portion of the pedal arm 400 is in a position away from the mounting surface 130, which provides room for reducing the intrusion amount. In the event of a vehicle collision, the trigger bracket 200 starts to rotate, the pedal shaft 420 moves away from the mounting surface 130, and the stepping portion of the pedal arm 400 approaches the mounting surface 130. This action effectively reduces the intrusion amount of the pedal arm 400 into the cab and reduces the risk of driver injury.

[0062] As Figures 1 to 9 shown, based on the above-described embodiments, a vehicle includes a brake pedal and also includes a vehicle body. The brake pedal is suspended and installed in the vehicle body, and a trigger member 500 is provided in the vehicle body; when a vehicle collision causes the intrusion amount of the brake pedal to reach a threshold value, the collision force receiving portion 230 of the trigger bracket 200 collides with the trigger member 500, causing the pedal arm 400 to deflect.

[0063] A trigger member 500 is provided inside the vehicle body. The trigger member 500 is close to the collision force receiving portion 230 of the trigger bracket 200, ensuring that when a vehicle collision causes the intrusion amount of the brake pedal to reach a preset threshold value, the collision force receiving portion 230 on the brake pedal can contact and act on the trigger member 500. This collision will exert a force on the trigger bracket 200, causing the trigger bracket 200 to start rotating around its rotation center, making the stepping portion of the pedal arm 400 move toward the mounting surface 130, thereby reducing the intrusion amount. Through this design, when a vehicle collision occurs, the brake pedal can automatically respond and reduce the potential risk of injury to the driver's leg.

[0064] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0065] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0066] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined.

[0067] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A brake pedal, characterized in that: include: Base (100); a trigger bracket (200), the trigger bracket (200) being rotatably connected to the base (100), and an angular travel position of the trigger bracket (200) relative to the base (100) including a working position; a circumferential locking piece (300), wherein the trigger bracket (200) in the working position is circumferentially fixed to the base (100) through the circumferential locking piece (300); the circumferential locking piece (300) is configured such that when the shear force applied to the circumferential locking piece (300) is greater than a fracture threshold, the circumferential locking piece (300) breaks and allows the trigger bracket (200) to rotate relative to the base (100); A pedal arm (400), the pedal arm (400) being rotatably mounted on the trigger bracket (200) via a pedal shaft (420), and the pedal shaft (420) and the rotation center of the trigger bracket (200) being eccentrically arranged; When a vehicle collision causes the circumferential torque borne by the trigger bracket (200) to exceed a threshold value, the circumferential locking member (300) breaks, the trigger bracket (200) rotates relative to the base (100), and forces the pedal shaft (420) to rotate around the rotation center of the trigger bracket (200), causing the pedal arm (400) to deflect in a direction to reduce the intrusion amount.

2. A brake pedal according to claim 1, characterized in that: The pedal arm (400) has a fulcrum portion (410) for connecting to a booster pump push rod, and the pedal shaft (420) and the pedaling portion of the pedal arm (400) are respectively located at two ends of the fulcrum portion (410); when the circumferential locking member (300) breaks and releases the circumferential locking of the trigger bracket (200) and the base (100), the pedal arm (400) forms a lever structure with the fulcrum portion (410) as the fulcrum; when the trigger bracket (200) drives the pedal shaft (420) to rotate around the rotation center of the trigger bracket (200), the pedal arm (400) swings in a direction of reducing the intrusion amount with the fulcrum portion (410) as the fulcrum.

3. A brake pedal according to claim 1, characterized in that: Rotating holes (110) are provided on both sides of the base (100), rotating parts (210) are provided on both sides of the trigger bracket (200), two rotating parts (210) are respectively inserted into the two rotating holes (110), and the rotating parts (210) are rotatably connected to the rotating holes (110).

4. A brake pedal as claimed in claim 3, characterized in that: The base (100) is provided with a first pin hole (120) on both sides, and the two first pin holes (120) are respectively connected to the two rotating holes (110), and the two rotating parts (210) of the trigger bracket (200) are both provided with a second pin hole (220); when the trigger bracket (200) is located at the working position, the first pin hole (120) and the second pin hole (220) are coaxially arranged and connected to form a locking hole, and the circumferential locking member (300) is arranged in the locking hole, and the circumferential locking member (300) limits the rotation of the rotating part (210) relative to the base (100) through its own rigidity.

5. A brake pedal as claimed in claim 3, characterized in that: The trigger bracket (200) has a collision force receiving portion (230).

6. A brake pedal according to claim 5, characterized in that: The trigger bracket (200) is configured as a U-shaped structure, and the trigger bracket (200) comprises two L-shaped bracket members (240), one end of the two bracket members (240) are spliced ​​to form the collision force-bearing portion (230), and the two rotating portions (210) are respectively located at the other ends of the two bracket members (240).

7. A brake pedal as claimed in claim 3, characterized in that: The two rotating parts (210) are both provided with an eccentric shaft hole (211), the two eccentric shaft holes (211) are coaxially arranged, and the two ends of the pedal shaft (420) are respectively connected to the two eccentric shaft holes (211).

8. A brake pedal according to claim 7, characterized in that: The pedal shaft (420) is fixedly connected to the pedal arm (400), and the end of the pedal shaft (420) is rotatably connected to the eccentric shaft hole (211).

9. A brake pedal according to claim 1, characterized in that: The base (100) is configured as a suspension structure, and the base (100) has a mounting surface (130); when the trigger bracket (200) is in the working position, the pedal shaft (420) is in a position with the shortest distance from the mounting surface (130); when a vehicle collision causes the trigger bracket (200) to rotate, the pedal shaft (420) rotates in a direction away from the mounting surface (130), causing the pedaling portion of the pedal arm (400) to move in a direction close to the mounting surface (130), thereby reducing the amount of intrusion.

10. A vehicle, characterized in that: It comprises a brake pedal as claimed in any one of claims 1 to 9, and also comprises a vehicle body, wherein the brake pedal is suspendedly mounted in the vehicle body, and a trigger member (500) is provided in the vehicle body; when a vehicle collision causes the intrusion amount of the brake pedal to reach a threshold value, the collision force-bearing portion (230) of the trigger bracket (200) collides with the trigger member (500), causing the pedal arm (400) to deflect.

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