Force hysteresis assembly, brake pedal, brake system, and vehicle

Abstract

The application relates to a force hysteresis assembly, a brake pedal, a brake system and a vehicle, and relates to the technical field of automobiles. The force hysteresis assembly comprises a base, a moving piece and a friction piece; one end of the moving piece is rotationally connected with the base; the friction piece comprises a friction block and a first elastic piece, and the friction block is arranged between the base and the moving piece; one of the base and the moving piece is in contact with one end of the friction block, and the other is connected with the friction block through the first elastic piece. According to the application, the friction block and the first elastic piece are arranged between the base and the moving piece, so that the friction force between the base and the moving piece can be increased through the friction block to provide force hysteresis for the brake pedal, and the first elastic piece can apply force to the friction block to ensure stable contact between the friction block and corresponding components, so that the friction block can be stably attached to the corresponding components after the friction block is worn, sufficient force hysteresis can be provided for the brake pedal, and the service life of the brake pedal is prolonged.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a force lag component, brake pedal, braking system, and vehicle. Background Technology

[0002] The braking system is one of the core systems for safe vehicle operation. Its main function is to use an oil pump to transmit hydraulic fluid to the wheel cylinders mounted on the wheels, causing the wheel cylinders to generate a force opposite to the direction of vehicle travel. This creates a braking force that slows down or stops the vehicle while it is in motion, or keeps a stationary vehicle stationary. The primary source of this braking force is the vehicle's brake pedal.

[0003] In related technologies, the brake pedal is connected to the master cylinder of the braking system. Therefore, when the driver presses the brake pedal, the pedal experiences hydraulic resistance from the braking system; that is, under the action of hydraulic pressure, the brake pedal exhibits hysteresis (also known as damping). Hysteresis refers to the resistance encountered when the user presses the brake pedal and when the pedal returns to its original position. Because of this hysteresis, the pedal surface remains stable even on bumpy roads, facilitating smooth pedal pressing and return, thus ensuring the stability of the output signal when the brake pedal is actuated, and consequently ensuring vehicle braking stability. Furthermore, the presence of hysteresis, while stabilizing the pedal surface position, can also significantly reduce driver fatigue, thereby improving the user's comfort experience.

[0004] With the development and maturation of electronic control technology, brake-by-wire systems are gradually becoming a trend. Brake-by-wire systems are a technology that controls the electronic braking system by collecting electrical signals from the brake pedal. Because the brake pedal in a brake-by-wire system is decoupled from the braking system, the force from the brake pedal is not transmitted to the braking system, resulting in a lack of brake pedal lag, which is not conducive to the driver's precise control of the brake pedal. Utility Model Content

[0005] This application provides a force lag component that can increase the force lag of the brake pedal, thereby at least solving the above-mentioned technical problems.

[0006] To achieve the above objectives, according to a first aspect of this application, a force lag assembly is provided, the force lag assembly including a base, a moving member, and a friction member; one end of the moving member is rotatably connected to the base; the friction member includes a friction block and a first elastic member, the friction block being disposed between the base and the moving member; one of the base and the moving member is in contact with one end of the friction block, and the other is connected to the friction block through the first elastic member.

[0007] Optionally, the surface of the base and the moving member that is configured to contact the friction block is a first wedge surface, the first wedge surface forming an acute angle with a first direction, the first direction being perpendicular to the rotation axis of the moving member.

[0008] Optionally, the included acute angle is α, satisfying: 0 < α < 1°.

[0009] Optionally, the base includes two side baffles, and one end of the moving member is located between the two side baffles; a friction element is provided between the moving member and each side baffle, and in each friction element, a friction block contacts the moving member and one of the adjacent side baffles, and is connected to the other through a first elastic element; The base also includes a middle plate and a bottom plate. One end of each of the two side baffles is connected to the bottom plate. The middle plate is located between the two side baffles and is connected to the two side baffles. The bottom plate, the middle plate, and the two side baffles together define the mounting groove. One end of the moving part is located in the mounting groove and is rotatably connected to the two side baffles. And / or, the force lag assembly also includes a rotating shaft and a wear-resistant plate, the base is provided with a first through hole, the moving member is provided with a second through hole, the rotating shaft passes through the first through hole and the second through hole, the wear-resistant plate is sleeved on the end of the rotating shaft, and a portion of the wear-resistant plate is located between the rotating shaft and the hole wall of the first through hole, and another portion is located between the base and the moving member. Optionally, the force lag assembly further includes a second elastic element located on one side of the moving element, with both ends of the second elastic element connected to the moving element and the base respectively, and the second elastic element configured to drive the moving element back to its original position.

[0010] Optionally, the force lag assembly further includes a first buffer member located on the side of the moving member opposite to the second elastic member and connected to one of the moving member and the base; And / or, the second elastic element includes a first sub-spring, a second sub-spring, and a sleeve. One end of the first sub-spring is connected to the moving element, and the other end extends into the sleeve and is connected to the inner wall of the sleeve. One end of the second sub-spring is connected to the base, and the other end extends into the sleeve and is connected to the inner wall of the sleeve. A spring support pad is provided on the surface of the base facing the second sub-spring, and a positioning groove is provided at one end of the spring support pad facing the second sub-spring. The end of the second sub-spring away from the first sub-spring is inserted into the positioning groove. A second annular groove is provided at one end of the spring support pad facing the second sub-spring, and a second buffer is installed in the second annular groove. The second buffer is positioned opposite the sleeve along the extension and retraction direction of the second sub-spring. A damping rubber post is fitted onto the end of the second sub-spring furthest from the first sub-spring, and one end of the damping rubber post is connected to the bottom wall of the positioning groove.

[0011] Optionally, a first mounting hole is provided at one end of the friction block near the first elastic member, and one end of the first elastic member extends into the first mounting hole; And / or, one of the base and the moving member configured to connect with the first elastic member is provided with a second mounting hole, the first elastic member is disposed in the second mounting hole, and the end of the friction block near the first elastic member extends into the second mounting hole. According to a second aspect of this application, a brake pedal is provided, the brake pedal including a pedal, a sensor and the aforementioned force lag assembly; one end of a moving member away from the base is connected to the pedal; the sensor is disposed on the base and configured to collect position information of the pedal.

[0012] According to a third aspect of this application, a braking system is provided, the braking system including the aforementioned brake pedal.

[0013] According to a fourth aspect of this application, a vehicle is provided that includes the aforementioned braking system.

[0014] In the force lag assembly of this application embodiment, by setting a friction block and a first elastic member between the base and the moving member, the friction block can increase the friction between the base and the moving member to provide force lag for the brake pedal, and the first elastic member can apply force to the friction block to ensure stable contact between the friction block and the corresponding component. This ensures that even after the friction block wears, it can still stably fit with the corresponding component, providing sufficient force lag for the brake pedal and improving the service life of the brake pedal.

[0015] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0017] Figure 1 This is a schematic diagram of the force lag component provided in an exemplary embodiment of this application; Figure 2 This is an exploded view of the force lag component provided in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of the internal structure of the first force lag component provided in an exemplary embodiment of this application; Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle; Figure 5 This is a schematic diagram of the internal structure of the second type of force lag component provided in an exemplary embodiment of this application; Figure 6 yes Figure 5 Enlarged schematic diagram of part B; Figure 7 This is a schematic diagram of the structure of the base provided in an exemplary embodiment of this application; Figure 8 This is a schematic diagram of the structure of the moving part provided in an exemplary embodiment of this application; Figure 9 yes Figure 1 Sectional view of CC; Figure 10 yes Figure 1 Sectional view of DD; Figure 11 This is a schematic diagram of the structure of the brake pedal provided in an exemplary embodiment of this application; Figure 12 This is a structural block diagram of the braking system provided in an exemplary embodiment of this application; Figure 13 This is a structural block diagram of a vehicle provided in an exemplary embodiment of this application.

[0018] Explanation of reference numerals in the attached figures: 1000 - Vehicles; 100a - Braking system; 100 - Brake pedal; 10-Force lag component; 11-Base; 111-Side baffle; 112-Intermediate plate; 113-Bottom plate; 114-Mounting groove; 115-First through hole; 116-Matching part; 117-Third mounting hole; 12-Moving component; 121-Second perforation; 122-First annular groove; 13-Friction component; 131-First elastic component; 132-Friction block; 133-First mounting hole; 141 - First wedge surface; 142 - Second mounting hole; 151 - Shaft; 152 - Wear-resistant plate; 16-Second elastic element; 161-First sub-spring; 162-Second sub-spring; 163-Sleeve; 164-Spring support pad; 165-Positioning groove; 166-Second annular groove; 167-Damping rubber column; 168-Second buffer element; 17 - First buffer component; 21-Pedal; 211-Tread surface; 22-Sensor. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0020] The following combination Figures 1 to 13 The present application provides a detailed description of a force lag component 10, a brake pedal 100, a braking system 100a, and a vehicle 1000, as provided in the embodiments of this application.

[0021] Please see Figures 1 to 5 In a first aspect, embodiments of this application provide a force-locking assembly 10. The force-locking assembly 10 includes a base 11, a moving member 12, and a friction member 13. One end of the moving member 12 is rotatably connected to the base 11. The friction member 13 includes a friction block 132 and a first elastic member 131. The friction block 132 is disposed between the base 11 and the moving member 12. One of the base 11 and the moving member 12 contacts one end of the friction block 132, and the other is connected to the friction block 132 via the first elastic member 131.

[0022] For example, the base 11 contacts one end of the friction block 132, and the moving member 12 is connected to the friction block 132 through the first elastic member 131, such as Figure 3 and Figure 4 As shown.

[0023] For example, the moving member 12 contacts one end of the friction block 132, and the base 11 is connected to the friction block 132 through the first elastic member 131, such as Figure 5 and Figure 6 As shown.

[0024] For example, the materials of the friction block 132 include, but are not limited to, resin-based composite materials, gold-based composite materials, rubber, etc.

[0025] For example, the first elastic element 131 is a spring, specifically a helical cylindrical compression spring.

[0026] The connection between the first elastic member 131 and the corresponding component can be a snap-fit, a glued connection, or an abutment. Specifically, one end of the first elastic member 131 abuts against the friction block 132, and the other end abuts against one of the base 11 and the moving member 12 connected to it.

[0027] It is understood that when the force lag assembly 10 is applied to the vehicle 1000, the base 11 is fixed to the vehicle body, and the end of the moving member 12 away from the base 11 is connected to the pedal 21. During the process of the pedal 21 being pressed and the pedal 21 returning to its original position, the friction block 132 moves relative to the one in contact with it, either the base 11 or the moving member 12, thereby generating a frictional force that hinders the movement of the pedal 21, thus increasing the force lag of the brake pedal 100. It is understood that this force lag is mainly composed of the moving member 12, the friction block 132, the first elastic member 131, and the surfaces of the base 11 and the moving member 12 that are in contact with the friction block 132, resulting in a simple overall structure. Furthermore, to meet the different force lag requirements of different vehicle models, friction blocks 132 with different hardness, friction blocks 132 with different surface structures, and elastic members with different stiffness can be used, thereby satisfying the force lag requirements of different vehicle models.

[0028] It is understood that the force lag assembly 10 also includes an elastic return element, which causes the elastic return element to deform elastically when the driver presses the pedal 21, so that after the pressing force is unloaded, the deformation restoring force of the elastic return element drives the pedal 21 to return to its original position. The elastic return element can be a torsion spring, a helical cylindrical compression spring, or a hook spring.

[0029] It is understood that the rotational connection between the base 11 and the moving member 12 is mainly achieved through the rotating shaft 151. The rotating shaft 151 is connected to both the base 11 and the moving member 12, allowing the moving member 12 to rotate around the axis of the rotating shaft 151. Alternatively, the rotating shaft 151 can be fixedly connected to the base 11 and rotatably engaged with the moving member 12, or it can be fixedly connected to the moving member 12 and rotatably engaged with the base 11.

[0030] In this embodiment, by providing a friction block 132 and a first elastic element 131 between the base 11 and the moving member 12, the friction block 132 can increase the friction between the base 11 and the moving member 12 to provide force lag for the brake pedal 100. At the same time, the first elastic element 131 can apply force to the friction block 132 to ensure stable contact between the friction block 132 and the corresponding component. This ensures that even after the friction block 132 wears, it can still stably fit with the corresponding component, providing sufficient force lag for the brake pedal 100 and improving the service life of the brake pedal 100.

[0031] Please see Figure 4 or Figure 6In some embodiments, the surface of the base 11 and the moving member 12 that is configured to contact the friction block 132 is a first wedge surface 141. The first wedge surface 141 forms an acute angle with a first direction. The first direction is perpendicular to the rotation axis of the moving member 12. Thus, the friction member 13 not only increases axial frictional force on the rotation axis of the moving member 12 to provide hysteresis, but also increases radial frictional force in a direction perpendicular to the rotation axis to provide hysteresis acting radially on the moving member 12, thereby increasing hysteresis and providing sufficient hysteresis for the brake pedal 100, which facilitates precise control of the brake pedal 100 by the driver.

[0032] For example, the end face of the friction block 132 facing the first wedge surface 141 is parallel to the first wedge surface 141, so that the contact between the friction block 132 and the first wedge surface 141 is a surface-to-surface contact.

[0033] It is understandable that the force lag is mainly composed of the moving part 12, the friction block 132, the first elastic part 131, and the first wedge surface 141.

[0034] When the friction block 132 contacts the base 11, the acute angle can be located on the side of the first wedge surface 141 away from the friction block 132, or on the side of the first wedge surface 141 close to the friction block 132; when the friction block 132 contacts the moving member 12, the acute angle can be located on the side of the first wedge surface 141 close to the friction block 132, or on the side of the first wedge surface 141 away from the friction block 132.

[0035] Specifically, when the friction block 132 contacts the base 11, the acute angle is located on the side of the first wedge surface 141 away from the friction block 132, such as... Figure 3 and Figure 4 As shown. It can be understood that the first wedge surface 141 is a wedge-shaped inclined surface, as... Figure 3 and Figure 4 As shown, the first wedge surface 141 is offset relative to the rotation axis perpendicular to the moving member 12, such that the size of the gap between the first wedge surface 141 and the moving member 12 gradually decreases as it moves away from the rotation axis. An acute angle is formed between the first wedge surface 141 and the plane passing through the rotation axis; this angle can be called the wedge angle. Figure 7As shown, points A and B on the base 11 are sequentially arranged along a direction parallel to the circumferential rotation of the moving member 12, with the gap size at point A being smaller than that at point B. Correspondingly, in a direction parallel to the axis of rotation, the distance between point A and the moving member 12 is smaller than the distance between point B and the moving member 12, meaning point A is closer to the moving member 12 than point B. Thus, when the pedal 21 is pressed, as the friction block 132 moves from point B to point A with the rotation of the moving member 12, the gap between the first wedge surface 141 and the moving member 12 gradually decreases, and the squeezing force on the friction block 132 from the base 11 and the moving member 12 gradually increases. This causes the force lag provided by the friction block 132 to gradually increase as the pedal 21 is pressed, which is beneficial for the driver to accurately control the brake pedal 100.

[0036] It is understood that when the friction block 132 contacts the moving member 12, and the acute angle is located on the side of the first wedge surface 141 away from the friction block 132, its action process can be referred to the action process when the friction block 132 contacts the base 11, and the acute angle is located on the side of the first wedge surface 141 away from the friction block 132.

[0037] Specifically, when the friction block 132 contacts the moving member 12, the acute angle is located on the side of the first wedge surface 141 closest to the friction block 132, such as... Figure 5 and Figure 6 As shown. It can be understood that the first wedge surface 141 is a wedge-shaped inclined surface, as... Figure 5 and Figure 6 As shown, the first wedge surface 141 is offset relative to the rotation axis perpendicular to the moving member 12, such that the size of the gap between the first wedge surface 141 and the moving member 12 gradually decreases as it approaches the rotation axis. An acute angle is formed between the first wedge surface 141 and the plane passing through the rotation axis; this angle can be called the wedge angle. Figure 8 As shown, points C on the moving member 12 and D on the base 11 are sequentially arranged along a direction parallel to the circumferential rotation of the moving member 12, and the gap size corresponding to point C is smaller than the gap size corresponding to point D. Correspondingly, in a direction parallel to the axis of rotation, the distance between point A and the moving member 12 is smaller than the distance between point B and the moving member 12, that is, point C is closer to the moving member 12 than point D. Thus, when the pedal 21 is pressed, as the friction block 132 moves from point C to point D with the rotation of the moving member 12, the gap between the first wedge surface 141 and the moving member 12 gradually decreases, and the squeezing force on the friction block 132 from the base 11 and the moving member 12 gradually increases. This causes the force lag provided by the friction block 132 to gradually increase as the pedal 21 is pressed, which is beneficial for the driver to accurately control the brake pedal 100.

[0038] It is understood that when the friction block 132 contacts the moving member 12, and the acute angle is located on the side of the first wedge surface 141 close to the friction block 132, its action process can be referred to the above action process when the friction block 132 contacts the moving member 12 and the acute angle is located on the side of the first wedge surface 141 close to the friction block 132.

[0039] Please see Figure 4 and Figure 5 In some embodiments, the acute angle is α, which satisfies: 0 < α < 1°.

[0040] It can be understood that the values ​​of α include, but are not limited to, 0.05°, 0.10°, 0.15°, 0.2°, 0.25°, 0.3°, 0.35°, 0.4°, 0.45°, 0.5°, 0.55°, 0.6°, 0.65°, 0.7°, 0.75°, 0.8°, 0.85°, 0.9°, 0.95°, and 1°.

[0041] For example, the value of α is 0.2° to 0.5°.

[0042] In this embodiment, by limiting the size of the acute angle, the squeezing force of the moving part 12 and the base 11 on the friction block 132 can be increased as the pedal 21 is pressed, thus providing sufficient force lag for the brake pedal 100, while avoiding excessive squeezing of the friction block 132 that would result in excessive force lag. This ensures that the force lag provided by the force lag assembly 10 is within a suitable range, facilitating precise control of the brake pedal 100 by the driver and improving the ease of use of the brake pedal 100.

[0043] Please see Figure 7 In some embodiments, the base 11 includes two side baffles 111. One end of the moving member 12 is located between the two side baffles 111. A friction element 13 is provided between the moving member 12 and each side baffle 111. In each friction element 13, a friction block 132 contacts one of the moving member 12 and the adjacent side baffle 111, and is connected to the other through a first elastic element 131. In this way, the structural symmetry of the force retardation assembly 10 can be improved, which is beneficial to improving the stress state of the force retardation assembly 10 and enhancing the reliability of the force retardation assembly 10.

[0044] Please see Figures 1 to 7In some embodiments, the base 11 further includes an intermediate plate 112 and a bottom plate 113. One end of each of the two side baffles 111 is connected to the bottom plate 113. The intermediate plate 112 is located between and connected to the two side baffles 111. The bottom plate 113, the intermediate plate 112, and the two side baffles 111 together define a mounting groove 114. One end of the moving member 12 is located within the mounting groove 114 and is rotatably connected to the two side baffles 111. In this way, one end of the moving member 12 can be covered to prevent dust and impurities from entering the rotating mating part between the moving member 12 and the base 11, thereby improving the smoothness of the rotation of the moving member 12.

[0045] For example, two side baffles 111 are symmetrically arranged on both sides of the moving member 12.

[0046] Specifically, the two friction blocks 132 are in contact with a first wedge surface 141. That is, when the friction block 132 is in contact with the side baffle 111, the surface of each side baffle 111 facing the moving member 12 is the first wedge surface 141; when the friction block 132 is in contact with the moving member 12, the moving member 12 has first wedge surfaces 141 on both sides. In this way, when the moving member 12 rotates, the first wedge surfaces 141 on both sides of it contact the friction block 132 to increase the friction force. As a result, when the pedal 21 is pressed, the wedge surfaces on both sides of the moving member 12 gradually increase the damping force generated by squeezing the friction block 132, so that the driver can keep the position of the pedal 21 stable when pressing the electronic brake pedal 100, and improve the stability of the output signal of the pedal 21.

[0047] Please see Figure 2 and Figure 9 In some embodiments, the force-locking assembly 10 further includes a rotating shaft 151 and a wear-resistant plate 152. The base 11 has a first through hole 115. The moving member 12 has a second through hole 121. The rotating shaft 151 passes through the first through hole 115 and the second through hole 121. The wear-resistant plate 152 is sleeved on the end of the rotating shaft 151. A portion of the wear-resistant plate 152 is located between the rotating shaft 151 and the wall of the first through hole 115, and another portion is located between the base 11 and the moving member 12. This achieves a rotational connection between the base 11 and the moving member 12 while maintaining a simple connection structure and ensuring smooth and reliable relative movement.

[0048] Specifically, there are two wear-resistant plates 152, which are respectively fitted onto both ends of the rotating shaft 151. A first through hole 115 is provided on each side baffle 111. The two ends of the rotating shaft 151 are respectively passed through the first through hole 115 on one side baffle 111, and the middle part of the rotating shaft 151 is passed through the second through hole 121.

[0049] Please see Figure 2 and Figure 8In some embodiments, the force-locking assembly 10 further includes a second elastic element 16. The second elastic element 16 is located on one side of the moving element 12. Both ends of the second elastic element 16 are connected to the moving element 12 and the base 11, respectively. The second elastic element 16 is configured to drive the moving element 12 back to its original position. Thus, when the driver depresses the pedal 21, the second elastic element 16 elastically deforms so that after the pedal force is unloaded, the deformation-restoring force of the second elastic element 16 drives the pedal 21 back to its original position.

[0050] It can be understood that, along the rotation direction of the moving member 12, the second elastic member 16 is located on one side of the moving member 12. Specifically, when the force lag assembly is applied to the brake pedal 100, the second elastic member 16 is located on the side of the moving member 12 opposite to the pedal surface 211 of the pedal 21.

[0051] For example, the second elastic element 16 is a spring, such as a helical cylindrical spring.

[0052] Please see Figure 1 and Figure 2 In some embodiments, the force lag assembly 10 further includes a first buffer 17. The first buffer 17 is located on the side of the moving member 12 away from the second elastic member 16 and is connected to one of the moving member 12 and the base 11. Thus, when the second elastic member 16 drives the moving member 12 back to its original position, the first buffer 17 can buffer the over-rotation of the moving member 12 to prevent the moving member 12 from directly impacting the base 11, thereby improving the reliability of the movement of the moving member 12 and thus improving the reliability of the force lag assembly 10.

[0053] For example, there are two first buffer members 17, and the two first buffer members 17 are arranged sequentially along the rotation axis of the moving member 12.

[0054] For example, the first buffer 17 is connected to the base 11. Specifically, the first buffer 17 is connected to the surface of the intermediate plate 112 facing the moving member 12.

[0055] Please see Figure 2 , Figure 3 , Figure 5 and Figure 10In some embodiments, the second elastic element 16 includes a first sub-spring 161, a second sub-spring 162, and a sleeve 163. One end of the first sub-spring 161 is connected to the moving member 12, and the other end extends into the sleeve 163 and is connected to the inner wall of the sleeve 163. One end of the second sub-spring 162 is connected to the base 11, and the other end extends into the sleeve 163 and is connected to the inner wall of the sleeve 163. Thus, the second elastic element 16 can be provided between the moving member 12 and the base 11 to provide power for the return of the moving member 12 through the elastic deformation of the second elastic element 16. Alternatively, the second elastic element 16 can be configured as a multi-segment to match the rotational movement of the moving member 12, ensuring the stability of the elastic deformation of the second elastic element 16 and the reliability of the connection between the second elastic element 16, the moving member 12, and the base 11.

[0056] Specifically, a first annular groove 122 is provided on the surface of the moving member 12 facing the first sub-spring 161, and one end of the first sub-spring 161 is inserted into the first ring.

[0057] Please see Figure 2 , Figure 3 , Figure 5 and Figure 10 In some embodiments, a spring support pad 164 is provided on the surface of the base 11 facing the second sub-spring 162, and a positioning groove 165 is provided at one end of the spring support pad 164 facing the second sub-spring 162. The end of the second sub-spring 162 away from the first sub-spring 161 is inserted into the positioning groove 165. In this way, the second sub-spring 162 is inserted into the spring support pad 164, thereby increasing the mating connection between the second sub-spring 162 and the base 11, which helps to improve the installation stability of the second sub-spring 162.

[0058] Please see Figure 2 , Figure 3 , Figure 5 and Figure 10 In some embodiments, a second annular groove 166 is provided at one end of the spring support pad 164 facing the second sub-spring 162. The second annular groove 166 surrounds the positioning groove 165. A second buffer member 168 is installed in the second annular groove 166. The second buffer member 168 is positioned opposite the sleeve 163 along the extension and retraction direction of the second sub-spring 162. It can be understood that when the pedal 21 is pressed, the moving member 12 rotates toward the spring support pad 164. The maximum rotatable position of the moving member 12 is when both ends of the sleeve 163 contact the moving member 12 and the spring support pad 164, so as to achieve hard limiting through the sleeve 163.

[0059] Please see Figure 2 , Figure 3 , Figure 5 and Figure 10In some embodiments, a damping rubber post 167 is fitted onto the end of the second sub-spring 162 furthest from the first sub-spring 161, and one end of the damping rubber post 167 is connected to the bottom wall of the positioning groove 165. Specifically, one end of the damping rubber post 167 is inserted into the bottom wall of the positioning groove 165. In this way, the elastic deformation of the second sub-spring 162 can be guided by the damping rubber post 167, thereby improving the smoothness of the deformation of the second sub-spring 162.

[0060] Please see Figure 4 and Figure 6 In some embodiments, a first mounting hole 133 is provided at one end of the friction block 132 near the first elastic member 131. One end of the first elastic member 131 extends into the first mounting hole 133. This allows the first elastic member 131 to be inserted into the friction block 132, thereby enabling quick assembly of the first elastic member 131 and the friction block 132 and improving assembly efficiency.

[0061] Please see Figure 4 and Figure 6 In some embodiments, one of the base 11 and the moving member 12 configured to connect with the first elastic member 131 is provided with a second mounting hole 142. The first elastic member 131 is disposed in the second mounting hole 142. One end of the friction block 132 near the first elastic member 131 extends into the second mounting hole 142. In this way, the friction block 132 is assembled by plugging, thereby allowing the friction block 132 to be quickly mated with the corresponding component, which helps to improve assembly efficiency.

[0062] Specifically, when the base 11 is provided with the second mounting hole 142, the side baffle 111 is relatively thin. In order to increase the mating length between the base 11 and the friction block 132 and improve the installation stability of the friction block 132, a mating part 116 is provided on the side of the side baffle 111 away from the moving member 12. The mating part 116 is connected to the side baffle 111 of the base 11 by screws, and a third mounting hole 117 is provided on the mating part 116 at the part opposite to the second mounting hole 142. Thus, the end of the friction block 132 near the spring is located in the third mounting hole 117, the middle part of the friction block 132 is located in the second mounting hole 142, and the end of the friction block 132 away from the elastic element is located in the gap between the moving member 12 and the base 11.

[0063] Please see Figure 11 Secondly, embodiments of this application provide a brake pedal 100. The brake pedal 100 includes a pedal 21, a sensor 22, and the aforementioned force-locking assembly 10. One end of a moving member 12, away from the base 11, is connected to the pedal 21. The sensor 22 is disposed on the base 11. The sensor 22 is configured to acquire position information of the pedal 21.

[0064] It is understood that the pedal 21 has a tread surface 211, which is parallel to the axis of the rotating shaft 151 of the moving member 12.

[0065] The sensor 22 is configured to be connected to the control center of the braking system 100a of the vehicle 1000, so that the braking system 100a controls the wheel state according to the position information of the pedal 21 collected by the sensor 22, so as to realize the braking of the vehicle 1000 or release the braking of the vehicle 1000.

[0066] Specifically, when the driver applies force to the pedal 21, the pedal 21 rotates along the axis of the pivot 151 under downward pressure. At this time, the friction blocks 132 on both sides of the moving member 12 contact the first wedge surface 141. As the pedal 21 rotates downward, the gap between the moving member 12 (where the friction blocks 132 are located) and the base 11 gradually decreases, and the first wedge surface 141 gradually squeezes the friction blocks 132. When the pedal 21 is released, the second elastic member 16 provides a restoring force for the pedal 21 to return to its original position. As the pedal 21 returns to its original position, the friction blocks 132 on both sides of the moving member 12 rotate upward with the pedal 21. The damping force generated by the contact and relative movement of the friction blocks 132 with the first wedge surface 141 makes the restoring force of the pedal 21 less than the pedaling force, thereby maintaining the stable position of the pedal 21 surface and improving the stability of the output signal of the pedal 21.

[0067] The pedaling force is the sum of the frictional force that needs to be overcome when the pivot 151 rotates, the pressure compressing the second elastic element 16, and the frictional force between the friction block 132 and the first wedge surface 141. The restoring force of the pedal 21 is the deformation-restoring force of the second elastic element 16 minus the frictional force that needs to be overcome at the pivot 151 and the frictional force between the friction block 132 and the first wedge surface 141. Since the deformation-restoring force of the second elastic element 16 is equal to the pressure compressing it, the restoring force of the pedal 21 is less than the pedaling force.

[0068] It is understandable that when the pedal 21 is pressed, the friction at the pivot 151, the friction between the friction block 132 and the first wedge surface 141, and the deformation recovery force of the second elastic element 16 together hinder the rotation of the pedal 21. Therefore, when the pedal 21 is pressed, it is necessary to overcome the friction at the pivot 151, the friction between the friction block 132 and the first wedge surface 141, and the deformation recovery force of the second elastic element 16.

[0069] It is understandable that when pedal 21 returns to its original position, the deformation restoring force of the second elastic element 16 is the restoring force of pedal 21. When pedal 21 returns to its original position, it is necessary to overcome the frictional force at the pivot 151 and the frictional force between the friction block 132 and the first wedge surface 141.

[0070] It is understood that the brake pedal 100 includes the aforementioned force lag assembly 10, and the brake pedal 100 has all the beneficial effects of the aforementioned force lag assembly 10, which will not be repeated here.

[0071] Please see Figure 12 Thirdly, embodiments of this application provide a braking system 100a, which includes the aforementioned brake pedal 100.

[0072] It is understood that the largest braking system 100a includes the aforementioned brake pedal 100, and the braking system 100a has all the beneficial effects of the aforementioned brake pedal 100, which will not be repeated here.

[0073] Please see Figure 13 Fourthly, embodiments of this application provide a vehicle 1000, which includes the aforementioned braking system 100a. The vehicle 1000 can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on it.

[0074] It is understood that the vehicle 1000 includes the aforementioned braking system 100a, and the vehicle 1000 has all the beneficial effects of the aforementioned braking system 100a, which will not be repeated here.

[0075] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A force lag component (10), characterized in that, include: Base (11); The moving part (12) is rotatably connected at one end to the base (11); as well as The friction element (13) includes a friction block (132) and a first elastic element (131). The friction block (132) is disposed between the base (11) and the moving element (12). One of the base (11) and the moving element (12) is in contact with one end of the friction block (132), and the other is connected to the friction block (132) through the first elastic element (131).

2. The force lag component (10) according to claim 1, characterized in that, The surface of the base (11) and the moving member (12) that is configured to contact the friction block (132) is a first wedge surface (141), the first wedge surface (141) forming an acute angle with a first direction, the first direction being perpendicular to the rotation axis of the moving member (12).

3. The force lag component (10) according to claim 2, characterized in that, The acute angle is α, which satisfies: 0 < α < 1°.

4. The force lag component (10) according to claim 1, characterized in that, The base (11) includes two side baffles (111), and one end of the moving member (12) is located between the two side baffles (111). A friction member (13) is provided between the moving member (12) and each of the side baffles (111). In each friction member (13), the friction block (132) contacts one of the moving member (12) and the adjacent side baffle (111), and is connected to the other through a first elastic member (131). The base (11) further includes an intermediate plate (112) and a bottom plate (113). One end of each of the two side baffles (111) is connected to the bottom plate (113). The intermediate plate (112) is located between the two side baffles (111) and is connected to the two side baffles (111). The bottom plate (113), the intermediate plate (112), and the two side baffles (111) together define a mounting groove (114). One end of the moving member (12) is located in the mounting groove (114) and is rotatably connected to the two side baffles (111). And / or, the force lag assembly (10) further includes a rotating shaft (151) and a wear-resistant plate (152), the base (11) is provided with a first through hole (115), the moving member (12) is provided with a second through hole (121), the rotating shaft (151) passes through the first through hole (115) and the second through hole (121), the wear-resistant plate (152) is sleeved on the end of the rotating shaft (151), and a portion of the wear-resistant plate (152) is located between the rotating shaft (151) and the hole wall of the first through hole (115), and another portion is located between the base (11) and the moving member (12).

5. The force lag assembly (10) according to any one of claims 1-4, characterized in that, The force lag assembly (10) further includes a second elastic element (16), which is located on one side of the moving element (12). The two ends of the second elastic element (16) are respectively connected to the moving element (12) and the base (11). The second elastic element (16) is configured to drive the moving element (12) back to its original position.

6. The force lag component (10) according to claim 5, characterized in that, The force lag assembly (10) further includes a first buffer (17), which is located on the side of the moving member (12) away from the second elastic member (16) and is connected to one of the moving member (12) and the base (11). And / or, the second elastic element (16) includes a first sub-spring (161), a second sub-spring (162), and a sleeve (163). One end of the first sub-spring (161) is connected to the moving element (12), and the other end extends into the sleeve (163) and is connected to the inner wall of the sleeve (163). One end of the second sub-spring (162) is connected to the base (11), and the other end extends into the sleeve (163) and is connected to the inner wall of the sleeve (163). A spring support pad (164) is provided on the surface of the base (11) facing the second sub-spring (162). A positioning groove (165) is provided at one end of the spring support pad (164) facing the second sub-spring (162). The end of the second sub-spring (162) away from the first sub-spring (161) is inserted into the positioning groove (165). A second annular groove (166) is provided at one end of the spring support pad (164) facing the second sub-spring (162), and a second buffer member (168) is installed in the second annular groove (166). The second buffer member (168) is arranged opposite to the sleeve (163) along the extension and retraction direction of the second sub-spring (162). The second sub-spring (162) is fitted with a damping rubber post (167) at one end away from the first sub-spring (161), and one end of the damping rubber post (167) is connected to the bottom wall of the positioning groove (165).

7. The force lag component (10) according to claim 1, characterized in that, A first mounting hole (133) is provided at one end of the friction block (132) near the first elastic member (131), and one end of the first elastic member (131) extends into the first mounting hole (133); And / or, one of the base (11) and the moving member (12) configured to connect with the first elastic member (131) is provided with a second mounting hole (142), the first elastic member (131) is disposed in the second mounting hole (142), and the friction block (132) extends into the second mounting hole (142) at one end near the first elastic member (131).

8. A brake pedal (100), characterized in that, include: Pedal (21); In any one of claims 1-7, the force-locking assembly (10) has the moving member (12) connected to the pedal (21) at one end away from the base (11); as well as A sensor (22) is disposed on the base (11) and the sensor (22) is configured to collect position information of the pedal (21).

9. A braking system (100a), characterized in that, Includes the brake pedal (100) as described in claim 8.

10. A vehicle (1000), characterized in that, Includes the braking system (100a) as described in claim 9.

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