Flexible connection structure for brake-by-wire pedal

Abstract

The application discloses a kind of line control brake pedal flexible connection structure, including pivot and rotor, further including shaft coupling, the pivot is equipped with connecting part one, the rotor is equipped with connecting part two, the shaft coupling is equipped with the connecting part three that can be connected with the connecting part one and the connecting part four that can be connected with the connecting part two, to realize pivot drive shaft coupling rotation and shaft coupling drive rotor rotation, the connecting part three can be axially slid and radially slid relative to connecting part one;And the connecting part four can be axially slid and radially slid relative to connecting part two.The above structure realizes mechanical decoupling between pedal pivot and rotor, while shaft coupling and pivot and rotor realize flexible connection, so when pedal is subjected to inclined lateral force, through the positional compensation adjustment of shaft coupling, it can be guaranteed that rotor is not deflected, so that magnet relative to hall sensor can be kept parallel, further will not affect the accuracy of sensor.

Description

Technical Field

[0001] This invention relates to a vehicle brake pedal, and more particularly to a flexible connection structure for a brake-by-wire pedal. Background Technology

[0002] Braking-by-wire systems, also known as electronic braking systems, are mainly divided into mechanical braking-by-wire systems and hydraulic braking-by-wire systems. Regarding the pedal structure, traditional braking systems use heavy metal pedals, generally lack angle sensors, and require connection to a brake booster, resulting in a complex structure and installation location limited by the brake booster. Therefore, they lack advantages and convenience in installation, braking, and user experience. Consequently, electronic brake pedal structures have emerged in the market.

[0003] However, in existing electronic brake pedals, the rotating shaft is rotatably connected to the pedal seat via a self-lubricating bearing. The Hall sensor is fixed on the pedal seat, while the magnet sensed by the Hall sensor is fixed on the rotating shaft. Since the self-lubricating bearing needs to rotate, there will inevitably be a small gap between the self-lubricating bearing and the pedal seat. When the pedal is subjected to a tilting lateral force, it will be transmitted to the rotating shaft, and then to the rotor, causing the rotor to deflect. This results in a deviation in the angle position of the magnet, thus affecting the sensing accuracy of the Hall sensor. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a flexible connection structure for brake-by-wire pedals.

[0005] The technical solution adopted by this invention to solve its technical problem is: The flexible connection structure of the brake-by-wire pedal includes a rotating shaft and a rotor, as well as a coupling. The rotating shaft has a first connecting part, the rotor has a second connecting part, and the coupling has a third connecting part that can connect to the first connecting part and a fourth connecting part that can connect to the second connecting part. This allows the rotating shaft to drive the coupling to rotate, and the coupling to drive the rotor to rotate. The third connecting part can slide axially and radially relative to the first connecting part, and the fourth connecting part can slide axially and radially relative to the second connecting part.

[0006] The first connecting part is a sliding hole, and the third connecting part is an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole and can slide axially and radially relative to the sliding hole.

[0007] The sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, and the width of the sliding hole is greater than the width of the insert.

[0008] The second connecting part is a sliding hole, and the fourth connecting part is an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole and can slide axially and radially relative to the sliding hole.

[0009] The sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, and the width of the sliding hole is greater than the width of the insert.

[0010] It also includes a pedal seat, which has a shaft hole and an annular groove on the wall of the shaft hole. The rotor is installed in the shaft hole and the edge of the rotor is embedded in the annular groove and slides in cooperation with the annular groove.

[0011] The pedal seat is provided with a shaft tube and a mounting seat. The mounting seat is provided with an annular edge and an annular notch. The end of the shaft tube is embedded in the annular notch. The annular groove is composed of the shaft tube, the annular edge and the mounting seat. The inner hole of the shaft tube forms the shaft hole.

[0012] The rotor is provided with a boss, and the second connecting part is provided on the boss.

[0013] The rotor is provided with magnet holes.

[0014] The connecting part three and the connecting part four are interlocked in a cross shape.

[0015] The beneficial effects of this invention are as follows: This invention adds a rotor and a coupling between the pedal shaft and the rotor. The coupling enables mechanical decoupling between the pedal shaft and the rotor, while the coupling and the shaft and rotor are flexibly connected. Therefore, when the pedal is subjected to a tilting lateral force, the position compensation adjustment of the coupling can ensure that the rotor does not deviate, thereby ensuring that the magnet remains parallel to the Hall sensor and thus does not affect the accuracy of the sensor. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an overall structural view of the pedal; Figure 2 This is a cross-sectional view of the pedal structure; Figure 3 This is an exploded structural view of the pedal; Figure 4 This is a structural view of the rotor; Figure 5 This is a structural view of the rotor from another angle; Figure 6 This is a structural view of the pedal seat; Figure 7 This is a structural view of the coupling; Figure 8 This is a structural view of the mounting base. Detailed Implementation

[0018] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0019] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0020] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0021] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0022] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0023] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0024] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0025] Reference Figures 1 to 8 This invention discloses a flexible connection structure for a brake pedal. The product includes a pedal seat 1 and a pedal 2. The pedal 2 has a rotating shaft 3, which is rotatably connected to the pedal seat 1 through a self-lubricating bearing 20. The pedal seat 1 is equipped with a Hall sensor. When the operator presses the pedal 2, the rotating shaft 3 will rotate. The above structure is all prior art, so it will not be described in detail.

[0026] This application also includes a coupling 6, and a rotor 4 is provided on the pedal seat 1. The magnet 5 is fixed in the rotor 4. The rotating shaft 3 is provided with a connecting part 7, the rotor 4 is provided with a connecting part 8, and the coupling 6 is provided with a connecting part 3 9 that can be connected to the connecting part 1 7 and a connecting part 4 10 that can be connected to the connecting part 2 8. Therefore, when the rotating shaft 3 rotates, the rotating shaft 3 drives the coupling 6 to rotate, and the coupling 6 drives the rotor 4 to rotate. The connecting part 3 9 can slide axially and radially relative to the connecting part 1 7; and the connecting part 4 10 can slide axially and radially relative to the connecting part 2 8. Through the above sliding, when the pedal 2 is subjected to a tilting lateral force, the position compensation adjustment of the coupling 6 can ensure that the rotor 4 does not deviate, thereby ensuring that the magnet 5 remains parallel to the Hall sensor, and thus not affecting the accuracy of the sensor.

[0027] The axial direction mentioned above refers to the direction along the axis of rotation of shaft 3, while the radial direction refers to the direction perpendicular to the axis of rotation of shaft 3.

[0028] As a specific structure, the connecting part 7 is preferably a sliding hole, and the connecting part 9 is preferably an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole. Because the insert block is a non-circular rod and the sliding hole is a non-circular hole, the insert block can drive the rotor 4 to rotate when it is engaged with the sliding hole. Moreover, the insert block can slide axially and radially relative to the sliding hole, so that position compensation adjustment can be achieved to avoid the rotor 4 from deflecting, thereby ensuring that the magnet 5 can remain parallel to the Hall sensor.

[0029] As a further structure, the sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, so the insert can slide along the axial direction of the sliding hole, and the width of the sliding hole is greater than the width of the insert, so the insert can slide along the radial direction of the sliding hole.

[0030] Similarly, as a specific structure, the second connecting part 8 is preferably a sliding hole, and the fourth connecting part 10 is preferably an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole and can slide axially and radially relative to the sliding hole.

[0031] The sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, and the width of the sliding hole is greater than the width of the insert.

[0032] The coupling 6 mentioned above is preferably made of a self-lubricating material. The self-lubricating material can be a composite material such as polytetrafluoroethylene, nylon, or POM. POM is preferred for coupling 6. Therefore, the friction generated by the sliding of the insert in the sliding hole is very small. In particular, the rotor 4 is made of nylon, so the sliding friction of the corresponding insert in the sliding hole of the rotor 4 is almost negligible. Therefore, the sliding of the insert will not affect the skewness of the rotor 4.

[0033] like Figure 7 As shown, as a further structure, the end of the connecting part 3 9 and the end of the connecting part 4 10 are interlocked to form a cross structure. In this way, the end of the connecting part 3 9 and the end of the connecting part 4 10 can both become positioning ends of each other, thereby restricting the axial movement position of the coupling 6. The structure is also simple.

[0034] Specifically, the pedal seat 1 is provided with a shaft hole 11, and the wall of the shaft hole 11 is provided with an annular groove 12. The rotor 4 is installed in the shaft hole 11 and the edge of the rotor 4 is embedded in the annular groove 12 and slides in cooperation with the annular groove 12. Through the above structure, the rotor 4 can rotate in the shaft hole 11 and the annular groove 12 without the rotor 4 coming out of the shaft hole 11 and the annular groove 12. Of course, there will inevitably be a small gap between the edge of the rotor 4 and the annular groove 12, so as to facilitate the smooth rotation of the rotor 4.

[0035] like Figure 6 As shown, in a further structure, the pedal seat 1 is provided with a shaft tube 13 and a mounting seat 14. The mounting seat 14 is provided with an annular edge 15 and an annular notch 16. The end of the shaft tube 13 is embedded in the annular notch 16. The annular groove 12 is composed of the shaft tube 13, the annular edge 15 and the mounting seat 14. The inner hole of the shaft tube 13 forms the shaft hole 11. The above structure facilitates assembly. After the rotor 4 is installed into the shaft tube 13, the mounting seat 14 is then fixed to the pedal seat 1 with screws, thereby confining the rotor 4 in the shaft hole 11 and the annular groove 12.

[0036] like Figure 4 and 5 As shown, the rotor 4 is provided with a boss 17, and the connecting part 2 8 is provided on the boss 17, that is, the sliding hole is provided on the boss 17, and the boss 17 increases the length of the sliding hole.

[0037] The rotor 4 is provided with a magnet hole 18, which is located on the opposite side of the rotor 4 and the boss 17. The magnet hole 18 extends into the boss 17, and the sliding hole is connected to the magnet hole 18. The magnet 5 and the rotor 4 are integrally injection molded, so they are firmly connected and there will be no relative rotation.

[0038] like Figure 8 As shown, there is also a cover plate 19 outside the mounting base 14. The circuit board is installed between the mounting base 14 and the cover plate 19. The cover plate 19 has a socket, and the Hall sensor is fixed on the circuit board.

[0039] The above provides a detailed description of a flexible connection structure for a brake-by-wire pedal provided by an embodiment of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A flexible connection structure for a brake-by-wire pedal, including a rotating shaft, characterized in that: It also includes a rotor and a coupling. The rotating shaft is provided with a connecting part one, the rotor is provided with a connecting part two, and the coupling is provided with a connecting part three that can be connected to the connecting part one and a connecting part four that can be connected to the connecting part two, so that the rotating shaft drives the coupling to rotate and the coupling drives the rotor to rotate. The connecting part three can slide axially and radially relative to the connecting part one; and the connecting part four can slide axially and radially relative to the connecting part two.

2. The flexible connection structure for the brake-by-wire pedal according to claim 1, characterized in that: The first connecting part is a sliding hole, and the third connecting part is an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole and can slide axially and radially relative to the sliding hole.

3. The flexible connection structure for the brake-by-wire pedal according to claim 2, characterized in that: The sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, and the width of the sliding hole is greater than the width of the insert.

4. The flexible connection structure for the brake-by-wire pedal according to claim 1, characterized in that: The second connecting part is a sliding hole, and the fourth connecting part is an insert block. The sliding hole is a non-circular hole, and the insert block is a non-circular rod. The insert block is located in the sliding hole and can slide axially and radially relative to the sliding hole.

5. The flexible connection structure for the brake-by-wire pedal according to claim 4, characterized in that: The sliding hole is a square hole, the insert is a square block, the depth of the sliding hole is greater than the length of the insert, and the width of the sliding hole is greater than the width of the insert.

6. The flexible connection structure for the brake-by-wire pedal according to claim 1, characterized in that: It also includes a pedal seat, which has a shaft hole and an annular groove on the wall of the shaft hole. The rotor is installed in the shaft hole and the edge of the rotor is embedded in the annular groove and slides in cooperation with the annular groove.

7. The flexible connection structure for the brake-by-wire pedal according to claim 6, characterized in that: The pedal seat is provided with a shaft tube and a mounting seat. The mounting seat is provided with an annular edge and an annular notch. The end of the shaft tube is embedded in the annular notch. The annular groove is composed of the shaft tube, the annular edge and the mounting seat. The inner hole of the shaft tube forms the shaft hole.

8. The flexible connection structure for the brake-by-wire pedal according to claim 1, characterized in that: The rotor is provided with a boss, and the second connecting part is provided on the boss.

9. The flexible connection structure for the brake-by-wire pedal according to claim 8, characterized in that: The rotor is provided with magnet holes.

10. The flexible connection structure for the brake-by-wire pedal according to claim 1, characterized in that: The connecting part three and the connecting part four are interlocked in a cross shape.

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