An electronic brake caliper and vehicle

Abstract

The embodiment of the present application provides an electronic brake caliper, comprising: a motor assembly, a sliding mechanism, a screw rotating shaft, a piston, a friction plate and a pressing mechanism; the pressing mechanism makes the sliding mechanism abut against the screw rotating shaft, promotes the sliding mechanism to transmit the torque output by an output rotating shaft to the screw rotating shaft, makes the screw rotating shaft drive the piston to move and abut against the friction plate to generate pressure, makes the friction plate move and abut against a brake disc to generate friction and brake output; when the friction force between the sliding mechanism and a friction surface is greater than a preset friction force, the sliding mechanism and the friction surface slide. The present application transmits the torque output by the output rotating shaft to the screw rotating shaft through the sliding mechanism to drive the piston to move and abut against the friction plate, so that the friction plate abuts against the brake disc to generate friction and brake output, instead of directly connecting the output rotating shaft and the transmission mechanism, which guarantees the continuous and stable brake torque output and prevents the motor assembly from being blocked.

Description

Technical Field

[0001] This invention relates to the field of vehicle braking system technology, and in particular to an electronic brake caliper and a vehicle. Background Technology

[0002] With the development of intelligent driving technology, various vehicle systems have begun to reserve and apply drive-by-wire technology. As an important part of vehicle safety, many manufacturers have begun to develop dry braking systems, which use purely electronically controlled electromechanical calipers. However, in situations such as long-distance downhill driving, a continuous and stable braking torque output is required. At this time, the electronic brake caliper needs to continuously tighten, which causes the motor to be in a stalled state. In this state, the motor will heat up rapidly, resulting in lower motor performance and even permanent damage to the motor and the vehicle, posing a great risk to the safety of the occupants.

[0003] Therefore, how to prevent the electronic brake caliper from stalling and causing damage to the motor assembly is a problem that those skilled in this field need to solve. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide an electronic brake caliper and vehicle that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of the present invention disclose an electronic brake caliper, comprising: a motor assembly, a sliding mechanism, a lead screw rotating shaft, a piston, a friction plate, and a pressing mechanism;

[0006] The motor assembly includes an output shaft, a sliding mechanism slidably connected to the output shaft, the output shaft and the sliding mechanism being housed within a lead screw shaft, and the sliding mechanism being disposed between the friction surfaces of the output shaft and the lead screw shaft; the friction surface is the surface where friction is generated and torque is transmitted when the sliding mechanism abuts against the lead screw shaft and undergoes relative motion; a pressing mechanism abuts against the sliding mechanism, causing the sliding mechanism to slide and abut against the friction surface; a piston is connected to the friction plate, the lead screw shaft is housed within the piston and connected to the inner wall of the piston;

[0007] The sliding mechanism is used to transmit the torque output by the output shaft to the lead screw shaft, so that the lead screw shaft drives the piston to move and abut against the friction plate, so that the friction plate moves and abuts against the brake disc to generate friction for braking output; when the friction force between the sliding mechanism and the friction surface is greater than the preset friction force between the sliding mechanism and the friction surface, the sliding mechanism slides against the friction surface; the preset friction force is the friction force between the sliding mechanism and the friction surface that makes the electronic brake caliper meet the braking requirements.

[0008] Optionally, the sliding mechanism includes: a sliding sleeve and a pressure head;

[0009] The sliding sleeve is fixedly connected to the shaft end of the output shaft. When the output shaft rotates, the sliding sleeve rotates synchronously.

[0010] The pressure head includes a disc body and a connecting shaft protruding from the disc body; the connecting shaft is located inside the sliding sleeve and is slidably connected to the sliding sleeve.

[0011] Optionally, the pressing mechanism includes: a pressure ring and a spring sheet;

[0012] The pressure ring is screwed to the inner wall of the lead screw rotation shaft;

[0013] The spring is located between the pressure head and the pressure ring. When the pressure ring moves axially relative to the connecting shaft of the pressure head, one end of the spring abuts against the pressure head, and the other end of the spring abuts against the pressure ring. The spring and the pressure ring generate pressure, which drives the pressure head to move axially relative to the connecting shaft and generates pressure with the lead screw rotating shaft.

[0014] Optionally, the surface of the pressure head that contacts the friction surface of the lead screw rotation shaft is a rough surface; the rough surface is provided with grooves or protrusions.

[0015] Optionally, the position of the pressure ring is adjusted based on the correspondence between the preset friction force and the position of the pressure ring.

[0016] Optionally, the spring is disc-shaped, including a first bottom surface, a guide structure, and a second bottom surface; wherein one end of the guide structure is fixedly connected to the first bottom surface, and the other end of the guide structure is fixedly connected to the second bottom surface; the diameter of the second bottom surface is larger than the diameter of the first bottom surface, and the first bottom surface, the guide structure, and the second bottom surface are integrally formed; the connection between the first bottom surface, the guide structure, and the second bottom surface is arc-shaped.

[0017] Optionally, the spring sheet is a spring structure, and the connecting shaft of the pressure head passes through the spring sheet.

[0018] Optionally, the lead screw rotation shaft is connected to the piston via a ball screw structure, a sliding lead screw structure, or a threaded connection.

[0019] Optionally, the connecting shaft of the pressure head is connected to the sliding sleeve via a spline structure.

[0020] Secondly, embodiments of the present invention disclose a vehicle including the electronic brake caliper described in the above embodiments.

[0021] The technical solutions of the embodiments of the present invention can achieve at least one of the following advantages:

[0022] This invention provides an electronic brake caliper comprising: a motor assembly, a sliding mechanism, a lead screw rotating shaft, a piston, friction pads, and a pressing mechanism; the motor assembly includes an output shaft; the pressing mechanism abuts the sliding mechanism against the lead screw rotating shaft, causing the sliding mechanism to transmit the torque output from the output shaft to the lead screw rotating shaft, which in turn drives the piston to move and abut against the friction pads, generating pressure, which in turn causes the friction pads to move and rub against the brake disc for braking output; when the frictional force between the sliding mechanism and the friction surface is greater than a preset frictional force, the sliding mechanism slides against the friction surface, wherein the preset frictional force is the frictional force required for the electronic brake caliper to meet braking requirements. This invention uses a sliding mechanism to transmit the torque output from the output shaft to the lead screw rotating shaft, causing the piston to move and abut against the friction pads, thereby generating friction between the friction pads and the brake disc for braking output. Instead of directly connecting the output shaft to the transmission mechanism, this ensures continuous and stable braking torque output while preventing motor assembly stall, thus protecting motor performance and the safety of vehicle occupants. Attached Figure Description

[0023] Figure 1 This is a structural diagram of an electronic brake caliper provided in an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of a sliding mechanism provided in an embodiment of the present invention;

[0025] Figure 3 This is a structural diagram of a spring sheet provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 01-Motor assembly, 02-Sliding mechanism, 03-Lead screw rotating shaft, 04-Piston, 05-Friction plate, 06-Pressure mechanism, 07-Output shaft,

[0028] 21-Sliding sleeve, 22-Pressure head, 23-Disc body, 24-Connecting shaft, 25-Pressure ring, 26-Spring piece,

[0029] 31-First bottom surface, 32-Second bottom surface, 33-Guide structure. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In existing technologies, the motor assembly is usually directly connected to the piston via a transmission mechanism for braking output. However, this technology is prone to causing the motor assembly to stall. To address the stalling problem of existing electronic brake calipers, one of the core concepts of this invention is to propose an electronic brake caliper. This electronic brake caliper includes: a motor assembly 01, a sliding mechanism 02, a lead screw rotating shaft 03, a piston 04, a friction plate 05, and a pressing mechanism 06. The motor assembly 01 includes an output shaft 07. The pressing mechanism 06 causes the sliding mechanism 02 to abut against the lead screw rotating shaft 03, causing the sliding mechanism 02 to transmit the torque output from the output shaft 07 to the lead screw rotating shaft 03. This causes the lead screw rotating shaft 03 to drive the piston 04 to move and abut against the friction plate 05, so that the friction plate 05 moves and abuts against the brake disc to generate friction and provide braking output. This prevents the motor assembly 01 from stalling, thereby protecting the performance of the motor assembly and the safety of the occupants of the vehicle.

[0032] Reference Figure 1 The diagram shows a structural diagram of an electronic brake caliper according to an embodiment of the present invention, which specifically includes: a motor assembly 01, a sliding mechanism 02, a lead screw rotating shaft 03, a piston 04, a friction plate 05, and a pressing mechanism 06;

[0033] The motor assembly 01 includes an output shaft 07, a sliding mechanism 02 slidably connected to the output shaft 07, the output shaft 07 and the sliding mechanism 02 being housed within a lead screw rotating shaft 03, and the sliding mechanism 02 being disposed between the friction surfaces of the output shaft 07 and the lead screw rotating shaft 03; the friction surface is the surface that generates friction and transmits torque when the sliding mechanism 02 abuts against the lead screw rotating shaft 03 and undergoes relative motion; a pressing mechanism 06 abuts against the sliding mechanism 02, causing the sliding mechanism 02 to slide and abut against the friction surface; the lead screw rotating shaft 03 is housed within a piston 04 and connected to the inner wall of the piston 04;

[0034] The sliding mechanism 02 is used to transmit the torque output by the output shaft 07 to the lead screw shaft 03, so that the lead screw shaft 03 drives the piston 04 to move and abut against the friction plate 05, so that the friction plate (05) moves and abuts against the brake disc to generate friction for braking output; when the friction force between the sliding mechanism 02 and the friction surface is greater than the preset friction force between the sliding mechanism 02 and the friction surface, the sliding mechanism 02 slides against the friction surface; the preset friction force is the friction force between the sliding mechanism 02 and the friction surface that makes the electronic brake caliper meet the braking requirements.

[0035] In practical applications, the sliding mechanism 02 is slidably connected to the output shaft 07 in the motor assembly 01. The sliding mechanism 02 can slide in the axial direction relative to the output shaft 07 and remain fixedly connected in the radial direction relative to the output shaft 07, without being able to move relative to it. The pressing mechanism 06 is screwed to the inner wall of the lead screw shaft 03. Adjusting the position of the pressing mechanism 06 generates pressure between the pressing mechanism 06 and the sliding mechanism 02, causing the sliding mechanism 02 to slide and abut against the friction surface of the lead screw shaft 03 to generate pressure. The pressing mechanism 06 is used to make the sliding mechanism 02 slide in the axial direction relative to the output shaft 07 and to make the sliding mechanism 02 abut against the lead screw shaft 03 to generate pressure. When the motor assembly 01 is in operation, the output shaft 07 starts to rotate. At this time, it drives the sliding mechanism 02 to rotate synchronously. Friction is generated between the friction surfaces of the sliding mechanism 02 and the lead screw shaft 03, which transmits the torque output by the output shaft 07 to the lead screw shaft 03, causing the lead screw shaft 03 to rotate synchronously. This causes the piston 04 to move and come into contact with the friction plate 05 to generate pressure. This causes the friction plate 05 to move in the axial direction relative to the output shaft 07 and come into contact with the brake disc (not shown in the figure) to generate friction for braking output. The friction plate 05 is fixed on the caliper bracket (not shown in the figure).

[0036] The lead screw rotation shaft 03 and the piston 04 can be connected by a ball screw structure, a sliding lead screw structure, or a threaded connection, etc. The specific connection method can be set according to actual needs, and no specific restrictions are made here.

[0037] When the lead screw shaft 03 drives the piston 04 to move, the piston 04 abuts against the friction plate 05, generating pressure and pushing the friction plate 05 to abut against the brake disc, thus generating friction. When the frictional force between the sliding mechanism 02 and the friction surface of the lead screw shaft 03 is greater than the preset frictional force between the sliding mechanism 02 and the friction surface of the lead screw shaft 03, the friction surfaces of the sliding mechanism 02 and the lead screw shaft 03 slide. The preset frictional force between the friction surfaces of the sliding mechanism 02 and the lead screw shaft 03 is the frictional force required for the electronic brake caliper to meet braking requirements. For example, when the friction force required by the electronic brake caliper to meet the braking demand is 50N, and the friction force between the sliding mechanism 02 and the friction surface of the lead screw rotation shaft 03 is 20N, a friction force of 50N can be generated between the friction pad 05 and the brake disc, which is the friction force required by the electronic brake caliper to meet the braking demand. The preset friction force between the sliding mechanism 02 and the friction surface of the lead screw rotation shaft 03 is 20N. If the friction force between the sliding mechanism 02 and the friction surface of the lead screw rotation shaft 03 is greater than 20N at this time, the friction surface between the sliding mechanism 02 and the lead screw rotation shaft 03 will slide, and the sliding mechanism 02 and the output shaft 07 will rotate synchronously. This ensures the continuous and stable braking output of the entire electronic brake caliper, while also preventing the motor assembly 01 from stalling.

[0038] Reference Figure 2 The diagram shows a structural diagram of a sliding mechanism according to an embodiment of the present invention, wherein the sliding mechanism 02 includes: a sliding sleeve 21 and a pressure head 22;

[0039] The sliding sleeve 21 is fixedly connected to the shaft end of the output shaft 07. When the output shaft 07 rotates, the sliding sleeve 21 rotates synchronously.

[0040] The pressure head 22 includes a disc body 23 and a connecting shaft 24 protruding from the disc body 23; the connecting shaft 24 is disposed inside the sliding sleeve 21 and is slidably connected to the sliding sleeve 21. When the pressure head 22 moves axially relative to the connecting shaft 24 and comes into contact with the friction surface, the pressure head 22 starts to rotate, so that friction is generated between the disc body 23 and the lead screw rotating shaft 03, driving the lead screw rotating shaft 03 to rotate synchronously.

[0041] In practical applications, the sliding sleeve 21 can be fixedly connected to the output shaft 07 in the motor assembly 01, and its other end can be slidably connected to the connecting shaft 24 of the pressure head 22. Alternatively, the sliding sleeve 21 can be connected to the output shaft 07 at one end via a spline structure, and to the connecting shaft 24 of the pressure head 22 at the other end. The specific connection method between the sliding sleeve 21 and the output shaft 07 in the motor assembly 01 can be set according to actual needs, and no specific restrictions are imposed here. The connecting shaft 24 of the pressure head 22 is slidably connected to the sliding sleeve 21. The connecting shaft 24 of the pressure head 22 and the sliding sleeve 21 can be connected via a spline structure. The pressure head 22 can slide in the axial direction relative to the connecting shaft 24, and remains fixedly connected in the radial direction relative to the connecting shaft 24, without relative movement. Adjusting the position of the pressing mechanism 06 causes the pressure head 22 to slide to a preset position in the radial direction relative to the connecting shaft 24, causing the disc body 23 of the pressure head 22 to abut against the friction surface of the lead screw rotating shaft 03 to generate pressure. The pressing mechanism 06 is used for adjusting... The pressure head 22 slides in the axial direction relative to the output shaft 07, and can make the pressure head 22 abut against the lead screw shaft 03 to generate pressure. When the pressure head 22 rotates, the friction surface between the pressure head 22 and the lead screw shaft 03 generates friction, causing the lead screw shaft 03 to rotate with the pressure head 22. Under the condition that the pressure head 22 and the lead screw shaft 03 generate the same pressure, in order to generate greater friction between the friction surface between the pressure head 22 and the lead screw shaft 03, the surface in contact with the friction surface between the pressure head 22 and the lead screw shaft 03 can be processed into a rough surface. The rough surface can be provided with scratches or protrusions. When the motor assembly 01 operates, the output shaft 07 begins to rotate. At this time, the output shaft 07 drives the sliding sleeve 21 to rotate synchronously, thereby causing the pressure head 22 to rotate synchronously. The torque output by the output shaft 07 is transmitted to the lead screw shaft 03, causing the lead screw shaft 03 to rotate synchronously. This causes the piston 04 to move and come into contact with the friction plate 05, generating pressure. The friction plate 05 moves in the axial direction relative to the output shaft 07 and comes into contact with the brake disc (not shown in the figure) to generate friction and perform braking output. When the friction force between the pressure head 22 and the friction surface of the lead screw shaft 03 is greater than the preset friction force between the pressure head 22 and the friction surface of the lead screw shaft 03, the friction surface between the pressure head 22 and the friction surface of the lead screw shaft 03 slides. The preset friction force between the pressure head 22 and the friction surface of the lead screw shaft 03 is the friction force required for the electronic brake caliper to meet the braking requirements. This ensures a continuous and stable braking output from the entire electronic brake caliper while also preventing the motor assembly 01 from stalling.

[0042] In one example, the mortgage mechanism 06 further includes: a pressure ring 25 and a spring 26;

[0043] The pressure ring 25 is screwed to the inner wall of the lead screw rotating shaft 03;

[0044] The spring piece 26 is located between the pressure head 22 and the pressure ring 25. When the pressure ring 25 moves axially relative to the connecting shaft 24 of the pressure head 22, one end of the spring piece 26 abuts against the pressure head 22, and the other end of the spring piece 26 abuts against the pressure ring 25. The spring piece 26 and the pressure ring 25 generate pressure, which drives the pressure head 22 to move axially relative to the connecting shaft 24 and generates pressure with the lead screw rotating shaft 03.

[0045] In one example, the position of the pressure ring 25 is adjusted so that the pressure ring 25 moves axially relative to the connecting shaft 24 and generates pressure with the spring 26, so that the pressure head 22 moves axially relative to the connecting shaft 24 and generates pressure with the lead screw rotating shaft 03.

[0046] Reference Figure 3 The diagram shows a structural diagram of a spring sheet according to an embodiment of the present invention. The spring sheet 26 is disc-shaped and includes a first bottom surface 31, a guide structure 33, and a second bottom surface 32. One end of the guide structure 33 is fixedly connected to the first bottom surface 31, and the other end of the guide structure 33 is fixedly connected to the second bottom surface 32. The diameter of the second bottom surface 32 is larger than the diameter of the first bottom surface 31. The first bottom surface 31, the guide structure 33, and the second bottom surface 32 are integrally formed. The connecting portion between the first bottom surface 31, the guide structure 33, and the second bottom surface 32 is arc-shaped.

[0047] In practical applications, the position of the pressure ring 25 can be adjusted to move the pressure ring 25 axially relative to the connecting shaft 24, and thus the pressure ring 25 can move axially relative to the connecting shaft 24 of the pressure head 22. Adjusting it to the desired position allows the pressure ring 25 to abut against the spring 26, pushing the pressure head 22 to slide axially relative to the connecting shaft 24 to the desired position. This also causes the disc 23 of the pressure head 22 to abut against the friction surface of the lead screw shaft 03, generating pressure and causing the lead screw shaft 03 to rotate synchronously with the pressure head 22. The motor assembly 01 can be started after adjusting the pressure ring 25 to the desired position. Thus, when the motor assembly 01 is operating, torque is transmitted through the pressure head 22, causing the lead screw shaft 03 to rotate with the output shaft 07 of the follower assembly 01.

[0048] In one example, the position of the pressure ring 25 is adjusted based on a preset correspondence between the friction force and the position of the pressure ring 25, so as to satisfy the predetermined braking output generated by the friction plate 05 and the brake disc. Therefore, the braking output can be satisfied by moving the pressure ring 25 to the corresponding position according to the required braking output.

[0049] In one example, the spring 26 is a spring structure. The connecting shaft 24 of the pressure head 22 passes through the middle of the spring 26.

[0050] Specifically, in practical applications, the output braking force of the electronic brake caliper corresponds to the friction force between the friction pad 05 and the brake disc. The greater the friction force between the friction pad 05 and the brake disc, the greater the output braking force of the electronic brake caliper. Conversely, the friction force between the friction pad 05 and the brake disc corresponds to the pressure between them. The greater the pressure, the greater the friction force. Furthermore, the pressure between the friction pad 05 and the brake disc corresponds to the pressure between the piston 04 and the friction pad 05. The greater the pressure, the greater the friction force. The greater the pressure between the friction pad 05 and the brake disc, the greater the pressure between the piston 04 and the friction pad 05. There is a corresponding relationship between the pressure between the piston 04 and the friction pad 05 and the friction force between the disc body 23 of the pressure head 22 and the friction surface of the lead screw shaft 03. The greater the friction force between the disc body 23 of the pressure head 22 and the friction surface of the lead screw shaft 03, the greater the pressure between the piston 04 and the friction pad 05. Conversely, there is a corresponding relationship between the friction force between the disc body 23 of the pressure head 22 and the friction surface of the lead screw shaft 03. The greater the pressure between the disc body 23 of the pressure head 22 and the friction surface of the lead screw shaft 03, the greater the pressure between the piston 04 and the friction pad 05. The greater the friction between the disc body 23 of the pressure head 22 and the friction surface of the lead screw rotation shaft 03, the greater the pressure between the disc body 23 of the pressure head 22 and the friction surface of the lead screw rotation shaft 03. There is a corresponding relationship between the pressure between the spring piece 26 and the pressure head 22; the greater the pressure between the spring piece 26 and the pressure head 22, the greater the pressure between the disc body 23 of the pressure head 22 and the friction surface of the lead screw rotation shaft 03. There is also a corresponding relationship between the pressure between the spring piece 26 and the pressure head 22 and the pressure between the pressure ring 25 and the spring piece 26; the greater the pressure between the pressure ring 25 and the spring piece 26, the greater the pressure between the spring piece 26 and the pressure head 22. The position of the pressure ring 25 affects the pressure between the pressure ring 25 and the disc 23 of the spring 26 and the pressure head 22. The closer the pressure ring 25 is to the disc 23 of the spring 26 and the pressure head 22, the greater the pressure between the pressure ring 25 and the spring 26. The position of the pressure ring 25 can be set according to the required output braking force of the electronic brake caliper, that is, the friction force between the friction pad 05 and the brake disc, to form a preset correspondence between the friction force and the position of the pressure ring 25. In use, the position of the pressure ring 25 can be directly set according to the correspondence between the friction force between the piston 04 and the friction pad 05 and the position of the pressure ring 25 to obtain the required friction force between the friction pad 05 and the brake disc, and thus obtain the output braking force required by the electronic brake caliper.

[0051] Based on the above description, during use, according to the braking force required by the electronic brake caliper, and based on the preset correspondence between the friction force and the position of the pressure ring 25, the position of the pressure ring 25 is adjusted so that the pressure ring 25 moves axially relative to the connecting shaft 24 of the pressure head 22 to a position corresponding to the preset friction force. The pressure ring 25 abuts against the spring 26 to generate pressure, which drives the pressure head 22 to move axially relative to the connecting shaft 24. This causes the disc 23 of the pressure head 22 to abut against the friction surface of the lead screw rotating shaft 03, generating pressure. The motor assembly 01 starts to operate, and the output shaft 07 of the motor assembly 01 starts to rotate, causing the sliding sleeve 21, which is fixedly connected to the shaft end of the output shaft 07, to rotate synchronously. This drives the pressure head 22, which is slidably connected to the sliding sleeve 21, to rotate synchronously with the output shaft 07. The connecting shaft 24 of the pressure head 22 and the sliding sleeve 21 are connected by a spline. The structure is connected, and the pressure head 22 drives the lead screw rotating shaft 03 to rotate synchronously with the pressure head 22. The lead screw rotating shaft 03 drives the piston 04 to move axially relative to the connecting shaft 24 of the pressure head 22 through the ball screw structure and abut against the friction plate 05 to generate pressure. The piston 04 causes the friction plate to move and abut against the brake disc to start friction, thereby performing braking output. When the friction force between the pressure head 22 and the friction surface is greater than the preset friction force, where the preset friction force is the friction force between the pressure head 22 and the lead screw rotating shaft that makes the electronic brake caliper reach the friction force that meets the braking requirements, the friction surface between the pressure head 22 and the lead screw rotating shaft 03 begins to slide and continues to rotate synchronously with the output shaft 07 of the motor assembly 01. This ensures a continuous and stable braking torque output while preventing the motor assembly 01 from stalling, thereby protecting the performance of the motor and the safety of the people in the vehicle.

[0052] This invention also discloses a vehicle including the aforementioned electronic brake caliper. The specific structural configuration of the electronic brake caliper can be found in the detailed description above, and will not be repeated here.

[0053] The vehicle provided in this embodiment of the invention uses a sliding mechanism to transmit the torque output from the output shaft to the lead screw shaft, thereby driving the piston to move and abut against the friction plate to generate friction for braking output. Instead of directly connecting the output shaft to the transmission mechanism, this ensures a continuous and stable braking torque output while preventing the motor from stalling, thus protecting the performance of the motor and the safety of the people inside the vehicle.

[0054] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. In this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not indicate any order, quantity, or importance, but are only used to distinguish different components. The word "a" or "an" does not exclude multiple entities. Words such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed after the word and its equivalents, without excluding other elements or objects. Words such as "connected" or "linked" are not limited to physical or mechanical connections, whether direct or indirect. Terms such as "upper," "lower," "left," "right," "top," or "bottom," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0056] The present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electronic brake caliper, characterized in that, include: The motor assembly (01), sliding mechanism (02), lead screw rotating shaft (03), piston (04), friction plate (05), and pressing mechanism (06) are included. The motor assembly (01) includes an output rotating shaft (07). The sliding mechanism (02) is slidably connected to the output rotating shaft (07). The output rotating shaft (07) and the sliding mechanism (02) are housed in the lead screw rotating shaft (03). The sliding mechanism (02) is disposed between the friction surfaces of the output rotating shaft (07) and the lead screw rotating shaft (03). The friction surface is the surface on which friction is generated and torque is transmitted when the sliding mechanism (02) and the lead screw rotating shaft (03) abut against each other and relative movement occurs. The pressing mechanism (06) abuts against the sliding mechanism (02). The pressing mechanism (06) causes the sliding mechanism (02) to slide and abut against the friction surface. The lead screw rotating shaft (03) is housed in the piston (04) and connected to the inner wall of the piston (04). The sliding mechanism (02) is used to transmit the torque output by the output shaft (07) to the lead screw shaft (03), so that the lead screw shaft (03) drives the piston (04) to move and abut against the friction plate (05) so that the friction plate (05) moves and abuts against the brake disc to generate friction for braking output; when the friction force between the sliding mechanism (02) and the friction surface is greater than the preset friction force between the sliding mechanism (02) and the friction surface, the sliding mechanism (02) slides against the friction surface; The preset friction force is the friction force between the sliding mechanism (02) and the friction surface that enables the electronic brake caliper to meet the braking requirements.

2. The electronic brake caliper according to claim 1, characterized in that, The sliding mechanism (02) includes: a sliding sleeve (21) and a pressure head (22); The sliding sleeve (21) is fixedly connected to the shaft end of the output shaft (07). When the output shaft (07) rotates, the sliding sleeve (21) rotates synchronously. The pressure head (22) includes a disc body (23) and a connecting shaft (24) protruding from the disc body (23); the connecting shaft (24) is located inside the sliding sleeve (21) and is slidably connected to the sliding sleeve (21).

3. The electronic brake caliper according to claim 2, characterized in that, The pressing mechanism (06) includes: a pressure ring (25) and a spring sheet (26); The pressure ring (25) is screwed to the inner wall of the lead screw rotating shaft (03); The spring piece (26) is located between the pressure head (22) and the pressure ring (25). When the pressure ring (25) moves axially relative to the connecting shaft (24) of the pressure head (22), one end of the spring piece (26) abuts against the pressure head (22), and the other end of the spring piece (26) abuts against the pressure ring (25). The spring piece (26) and the pressure ring (25) generate pressure, which drives the pressure head (22) to move axially relative to the connecting shaft (24) and generates pressure with the lead screw rotating shaft (03).

4. The electronic brake caliper according to claim 2, characterized in that, The surface of the pressure head (22) that contacts the friction surface of the lead screw rotating shaft (03) is a rough surface; the rough surface is provided with scratches or protrusions.

5. The electronic brake caliper according to claim 3, characterized in that, include: The position of the pressure ring (25) is adjusted based on the correspondence between the preset friction force and the position of the pressure ring (25).

6. The electronic brake caliper according to claim 3, characterized in that, The spring (26) is disc-shaped and includes a first bottom surface (31), a guide structure (33), and a second bottom surface (32). One end of the guide structure (33) is fixedly connected to the first bottom surface (31), and the other end of the guide structure (33) is fixedly connected to the second bottom surface (32). The diameter of the second bottom surface (32) is larger than the diameter of the first bottom surface (31). The first bottom surface (31), the guide structure (33), and the second bottom surface (32) are integrally formed. The connection between the first bottom surface (31), the guide structure (33), and the second bottom surface (32) is arc-shaped.

7. The electronic brake caliper according to claim 3, characterized in that, The spring sheet (26) is a spring structure, and the connecting shaft (24) of the pressure head (22) passes through the spring sheet (26).

8. The electronic brake caliper according to claim 1, characterized in that, The lead screw rotating shaft (03) and the piston (04) are connected by a ball screw structure, a sliding lead screw structure, or a threaded connection.

9. The electronic brake caliper according to claim 2, characterized in that, The connecting shaft (24) of the pressure head (22) is connected to the sliding sleeve (21) through a spline structure.

10. A vehicle comprising an electronic brake caliper as described in any one of claims 1-9.

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