Electronic mechanical brake pedal

Abstract

The invention discloses an electronic mechanical brake pedal, and belongs to the field of automobile manufacturing. The electronic mechanical brake pedal comprises a pedal mounting support box, a pedal and a foot feeling simulator are mounted in the pedal mounting support box, a pedal moving opening is formed in one end of the pedal mounting support box, the pedal comprises a pedal pin, a rotatable pedal arm is mounted on the pedal pin and extends out of the pedal moving opening, and a pedal pad is mounted at the tail end of the pedal arm. A push rod is arranged between the telescopic end of the foot feeling simulator and the pedal arm. Compared with a traditional iron pedal, the pedal is lighter in weight, the dynamic state of the pedal can be monitored in real time, and foot feeling feedback can be provided for a driver.

Description

Technical Field

[0001] The invention relates to the field of automobile manufacturing, and in particular to an electronic mechanical brake pedal. Background Art

[0002] Most of the existing automobile brake pedals are made of iron and are purely mechanical pedals without electrical components. Such brake pedals have the following two problems:

[0003] 1. With the increasing demand for lightweight vehicle bodies, it is difficult for pedals made of iron to meet the demand for lightweight.

[0004] 2. This type of brake pedal needs to be installed with a brake master cylinder or a separate foot feel simulator to provide the driver with foot feel feedback, and it cannot monitor pedal dynamics, such as pedal displacement and the driver's pedal speed. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an electronic mechanical brake pedal that is lighter in weight than a traditional iron pedal, can monitor pedal dynamics in real time and can provide foot feel feedback to the driver.

[0006] To achieve the above-mentioned purpose, the present invention designs an electronic mechanical brake pedal, including a pedal mounting bracket box, in which a foot pedal and a foot feel simulator are installed, one end of the pedal mounting bracket box is provided with a pedal movable opening, the foot pedal includes a pedal pin, a rotatable pedal arm is installed on the pedal pin, the pedal arm extends out of the pedal movable opening, a pedal pad is installed at the rear end of the pedal arm, and a push rod is provided between the telescopic end of the foot feel simulator and the pedal arm.

[0007] Preferably, a rotation angle sensor is installed on the outer wall of the pedal mounting bracket box, and the rotation angle sensor is located at the end of the pedal pin and is used to sense the rotation angle of the pedal.

[0008] Preferably, a displacement sensor is installed on the outer wall of the pedal mounting bracket box, and the displacement sensor is located at the push rod and is used to sense the displacement of the push rod.

[0009] Preferably, the pedal arm and the pedal pad are both made of plastic.

[0010] Preferably, the pedal mounting bracket box comprises a left half box and a right half box connected by bolts, and a pedal movable cover is provided at the pedal movable opening.

[0011] Preferably, the pedal movable cover is made of plastic.

[0012] Preferably, the foot feel simulator includes a main cylinder sleeve, in which a first pressure plate, a second pressure plate and a third pressure plate are sequentially arranged from top to bottom, a first compression spring is arranged between the first pressure plate and the second pressure plate, a second compression spring is arranged between the second pressure plate and the third pressure plate, a third compression spring is arranged between the third pressure plate and the bottom plate of the main cylinder sleeve, the stiffness coefficient of the first compression spring is smaller than that of the second compression spring, the stiffness coefficient of the second compression spring is smaller than that of the third compression spring, the first pressure plate includes a first plate body, a first sleeve is arranged at the bottom of the first plate body, and the first pressure plate is slidably arranged on the inner wall of the main cylinder sleeve.

[0013] Preferably, the second pressure plate includes a second plate body, a hole is opened in the middle of the second plate body, and a second sleeve is arranged on one side of the hole, an end of the second sleeve away from the second plate body is provided with an end plate seal, and a boss is arranged on the bottom surface of the second sleeve; the second plate body is slidably arranged on the inner wall of the first sleeve; a first protrusion is arranged in the middle of the bottom surface of the first plate body, one end of the first compression spring is sleeved on the first protrusion, and the other end is sleeved on the boss.

[0014] Preferably, a second protrusion is provided in the middle of the top surface of the third pressure plate, one end of the second compression spring is sleeved on the second protrusion, and the other end is installed on the outer wall of the second sleeve; a third protrusion is provided at the bottom of the third pressure plate, and a fourth protrusion is provided on the bottom plate of the main cylinder sleeve, one end of the third compression spring is sleeved on the third protrusion, and the other end is sleeved on the fourth protrusion.

[0015] Preferably, the main cylinder sleeve includes an upper cylinder body and a lower cylinder body, the upper cylinder body includes a first cylinder barrel and a second cylinder barrel connected to each other in a stepped cylinder shape, a top plate is provided at one end of the first cylinder barrel, a through hole is opened in the center of the top plate, and the first pressure plate is slidably provided on the inner wall of the first cylinder barrel; the inner diameter of the second cylinder barrel is larger than the inner diameter of the first cylinder barrel, the lower cylinder body includes a third cylinder barrel and a fourth cylinder barrel connected to each other, the inner wall of the second cylinder barrel is threadedly connected to the outer wall of the third cylinder barrel, the inner diameter of the third cylinder barrel is larger than the inner diameter of the fourth cylinder barrel, the inner diameter of the fourth cylinder barrel is equal to the inner diameter of the first cylinder barrel, and the third pressure plate is slidably provided in the fourth cylinder barrel; a circular ring-shaped limiting slider is provided on the outer wall of the first sleeve, and the limiting slider is slidably provided in the third cylinder barrel.

[0016] Preferably, a piston protrusion extending out of the through hole of the top plate is provided at the top center of the first plate body, a push rod groove is provided at the top of the piston protrusion, and a push rod is provided in the push rod groove; a fixing block is provided on the side of the pedal arm close to the piston protrusion, a circular groove is provided on the fixing block, and a circular hemisphere matching the circular groove is fixed to the other end of the push rod.

[0017] Beneficial effects of the present invention:

[0018] 1. The pedal arm and pedal pad of the present invention are both made of plastic, which is lighter than the traditional iron pedal.

[0019] 2. The present invention integrates a steering angle sensor and a displacement sensor, which can directly send the driver's braking intention signal to the entire vehicle. At the same time, the steering angle sensor and the displacement sensor can form redundancy with each other; integrating the steering angle sensor and the displacement sensor on the brake pedal can solve the problem of difficulty in collecting the driver's braking intention of smart driving vehicles.

[0020] 3. A three-stage foot feel simulator is directly integrated into the pedal mounting bracket box of the present invention, which can provide the driver with a pedal feel similar to that of a traditional braking system. Meanwhile, the foot feel simulator is integrated into the pedal mounting bracket box, which can avoid the bulky structure of installing a foot feel simulator in the braking system of traditional vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is the internal structure diagram of the present invention;

[0023] Figure 3 is a three-dimensional diagram of a foot pedal of the present invention;

[0024] Figure 4 is a three-dimensional diagram of a push rod of the present invention;

[0025] Figure 5 is a three-dimensional diagram of the foot feeling simulator of the present invention;

[0026] Figure 6 FIG. 4 is an internal structure diagram of the foot feel simulator of the present invention.

[0027] Reference numerals:

[0028] 1 pedal mounting bracket box, 11 left half box, 12 right half box, 13 pedal movable cover, 14 rotation angle sensor, 15 displacement sensor,

[0029] 2 pedal, 21 pedal pin, 22 pedal arm, 221 fixing block, 222 round groove, 23 pedal pad,

[0030] 3 putters, 31 hemispheres,

[0031] 4 main cylinder sleeve, 41 first cylinder barrel, 42 second cylinder barrel, 43 third cylinder barrel, 44 fourth cylinder barrel, 45 fourth protrusion, 46 top plate,

[0032] 5 first pressing plate, 51 first plate body, 511 first convex block, 52 first sleeve, 521 limit slider, 53 piston convex block, 531 push rod groove,

[0033] 6 second pressing plate, 61 second plate body, 62 second sleeve, 63 boss,

[0034] 7 third pressing plate, 71 second protrusion, 72 third protrusion,

[0035] 8 first compression spring,

[0036] 9 second compression spring,

[0037] 10 Third compression spring. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Example

[0045] like Figures 1 to 6 The electronic mechanical brake pedal shown in the figure comprises a pedal mounting bracket box 1, a foot pedal 2 and a foot feeling simulator are mounted in the pedal mounting bracket box 1, a pedal movable opening is provided at one end of the pedal mounting bracket box 1, the foot pedal 2 comprises a pedal pin 21, a rotatable pedal arm 22 is mounted on the pedal pin 21, the pedal arm 22 extends out of the pedal movable opening, a pedal pad 23 is mounted at the tail end of the pedal arm 22, and a push rod 3 is provided between the telescopic end of the foot feeling simulator and the pedal arm 22. A rotation angle sensor 14 is mounted on the outer wall of the pedal mounting bracket box 1, and the rotation angle sensor 14 is located at the end of the pedal pin 21 and is used to sense the rotation angle of the foot pedal 2. A displacement sensor 15 is mounted on the outer wall of the pedal mounting bracket box 1, and the displacement sensor 15 is located at the push rod 3 and is used to sense the displacement of the push rod 3. The pedal arm 22 and the pedal pad 23 are both made of plastic. The pedal mounting bracket box 1 comprises a left half box 11 and a right half box 12 connected by bolts, and a pedal movable cover 13 made of plastic is provided at the pedal movable opening.

[0046] The foot feel simulator includes a main cylinder sleeve 4, in which a first pressure plate 5, a second pressure plate 6 and a third pressure plate 7 are arranged in sequence from top to bottom. A first compression spring 8 is arranged between the first pressure plate 5 and the second pressure plate 6, a second compression spring 9 is arranged between the second pressure plate 6 and the third pressure plate 7, and a third compression spring 10 is arranged between the third pressure plate 7 and the bottom plate of the main cylinder sleeve 4. The stiffness coefficient of the first compression spring 8 is smaller than that of the second compression spring 9, and the stiffness coefficient of the second compression spring 9 is smaller than that of the third compression spring 10. The first pressure plate 5 includes a first plate body 51, and a first sleeve 52 is arranged at the bottom of the first plate body 51. The first pressure plate 5 is slidably arranged on the inner wall of the main cylinder sleeve 4.

[0047] The main cylinder sleeve 4 includes an upper cylinder body and a lower cylinder body. The upper cylinder body includes a first cylinder barrel 41 and a second cylinder barrel 42 which are connected to each other in a stepped cylinder shape. A top plate 46 is provided at one end of the first cylinder barrel 41, and a through hole is opened in the center of the top plate 46. A first pressure plate 5 is slidably provided on the inner wall of the first cylinder barrel 41; the inner diameter of the second cylinder barrel 42 is larger than the inner diameter of the first cylinder barrel 41; the lower cylinder body includes a third cylinder barrel 43 and a fourth cylinder barrel 44 which are connected to each other. The inner wall of the second cylinder barrel 42 is threadedly connected to the outer wall of the third cylinder barrel 43. The inner diameter of the third cylinder barrel 43 is larger than the inner diameter of the fourth cylinder barrel 44. The inner diameter of the fourth cylinder barrel 44 is equal to the inner diameter of the first cylinder barrel 41. The third pressure plate 7 is slidably provided in the fourth cylinder barrel 44; a circular ring-shaped limiting slider 521 is provided on the outer wall of the first sleeve 52, and the limiting slider 521 is slidably provided in the third cylinder barrel 43.

[0048] A piston protrusion 53 extending to the outside of the through hole of the top plate 46 is provided at the top center of the first plate body 51, and a push rod groove 531 is provided at the top of the piston protrusion 53, and a push rod 3 is provided in the push rod groove 531; a fixing block 221 is provided on the side of the pedal arm 22 close to the piston protrusion 53, and a circular groove 222 is provided on the fixing block 221, and a circular hemisphere 31 matching the circular groove 222 is fixed to the other end of the push rod 3.

[0049] The second pressure plate 6 includes a second plate body 61, a hole is opened in the middle of the second plate body 61, and a second sleeve 62 is arranged on one side of the hole, an end of the second sleeve 62 away from the second plate body 61 is provided with an end plate seal, and a boss 63 is arranged on the bottom surface of the second sleeve 62; the second plate body 61 is slidably arranged on the inner wall of the first sleeve 52; a first protrusion 511 is arranged in the middle of the bottom surface of the first plate body 51, one end of the first compression spring 8 is sleeved on the first protrusion 511, and the other end is sleeved on the boss 63.

[0050] A second protrusion 71 is provided in the middle of the top surface of the third pressure plate 7, one end of the second compression spring 9 is sleeved on the second protrusion 71, and the other end is installed on the outer wall of the second sleeve 62; a third protrusion 72 is provided at the bottom of the third pressure plate 7, and a fourth protrusion 45 is provided on the bottom plate of the main cylinder sleeve 4, one end of the third compression spring 10 is sleeved on the third protrusion 72, and the other end is sleeved on the fourth protrusion 45.

[0051] The process flow of the present invention is described below:

[0052] The electronic mechanical brake pedal in the embodiment is installed. When the driver steps on the pedal pad 23, the rotation angle sensor 14 records the rotation angle of the pedal arm 22 in real time, and the displacement sensor 15 records the displacement of the push rod 3.

[0053] The force of the pedal arm 22 is transmitted to the first pressure plate 5 through the push rod 3, and the first pressure plate 5 compresses the first compression spring 8. Since the stiffness coefficients of the second compression spring 9 and the third compression spring 10 are larger than those of the first compression spring 8, the deformation is smaller, and the first pressure plate 5 first compresses the first compression spring 8. When the first compression spring 8 is compressed to the limit, that is, the first protrusion 511 contacts the top of the boss 63, a rigid whole is formed. This process provides an idle travel area for the brake pedal to prevent the brake pedal from being accidentally stepped on.

[0054] When the driver continues to step on the brake pedal, the rigid whole formed by the first protrusion 511 and the top of the boss 63 continues to compress the second compression spring 9, and the second compression spring 9 will give the driver a linear foot feel feedback. In this process, since the stiffness coefficient of the second compression spring 9 is smaller than the stiffness coefficient of the third compression spring 10, the deformation of the third compression spring 10 is smaller.

[0055] When the driver continues to increase the force on the brake pedal, the second compression spring 9 is compressed to the limit, the bottom of the first sleeve 52 forms a rigid whole with the third pressure plate 7 and compresses the third compression spring 10, and the third compression spring 10 will give the driver a greater foot feedback force until the third compression spring 10 is compacted. Compared with the traditional iron pedal, the present invention is lighter in weight, can monitor the pedal dynamics in real time, and can provide the driver with foot feedback.

[0056] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An electronic mechanical brake pedal, characterized in that: The invention comprises a pedal mounting bracket box (1), wherein a foot pedal (2) and a foot feel simulator are mounted in the pedal mounting bracket box (1), a pedal movable opening is provided at one end of the pedal mounting bracket box (1), the foot pedal (2) comprises a pedal pin (21), a rotatable pedal arm (22) is mounted on the pedal pin (21), the pedal arm (22) extends out of the pedal movable opening, a pedal pad (23) is mounted at the rear end of the pedal arm (22), and a push rod (3) is provided between the telescopic end of the foot feel simulator and the pedal arm (22).

2. The electronic mechanical brake pedal according to claim 1, characterized in that: A rotation angle sensor (14) is installed on the outer wall of the pedal mounting bracket box (1). The rotation angle sensor (14) is located at the end of the pedal pin (21) and is used to sense the rotation angle of the foot pedal (2).

3. The electronic mechanical brake pedal according to claim 1, characterized in that: A displacement sensor (15) is installed on the outer wall of the pedal mounting bracket box (1); the displacement sensor (15) is located at the push rod (3) and is used to sense the displacement of the push rod (3).

4. The electronic mechanical brake pedal according to claim 1, characterized in that: The pedal arm (22) and the pedal pad (23) are both made of plastic.

5. The electromechanical brake pedal according to claim 1, characterized in that: The pedal mounting bracket box (1) comprises a left half box (11) and a right half box (12) connected by bolts, and a pedal movable cover (13) is provided at the pedal movable opening.

6. The electromechanical brake pedal according to claim 1, characterized in that: The foot feel simulator comprises a main cylinder sleeve (4), wherein a first pressure plate (5), a second pressure plate (6) and a third pressure plate (7) are arranged in sequence from top to bottom in the main cylinder sleeve (4), a first compression spring (8) is arranged between the first pressure plate (5) and the second pressure plate (6), a second compression spring (9) is arranged between the second pressure plate (6) and the third pressure plate (7), a third compression spring (10) is arranged between the third pressure plate (7) and the bottom plate of the main cylinder sleeve (4), the stiffness coefficient of the first compression spring (8) is smaller than that of the second compression spring (9), and the stiffness coefficient of the second compression spring (9) is smaller than that of the third compression spring (10), the first pressure plate (5) comprises a first plate body (51), a first sleeve (52) is arranged at the bottom of the first plate body (51), and the first pressure plate (5) is slidably arranged on the inner wall of the main cylinder sleeve (4).

7. The electromechanical brake pedal according to claim 6, characterized in that: The second pressure plate (6) comprises a second plate body (61), a hole is opened in the middle of the second plate body (61), and a second sleeve (62) is arranged on one side of the hole, an end of the second sleeve (62) away from the second plate body (61) is provided with an end plate seal, and a boss (63) is arranged on the bottom surface of the second sleeve (62); the second plate body (61) is slidably arranged on the inner wall of the first sleeve (52); a first protrusion (511) is arranged in the middle of the bottom surface of the first plate body (51), one end of the first compression spring (8) is sleeved on the first protrusion (511), and the other end is sleeved on the boss (63).

8. The electronic mechanical brake pedal according to claim 6, characterized in that: A second protrusion (71) is provided in the middle of the top surface of the third pressure plate (7); one end of the second compression spring (9) is sleeved on the second protrusion (71), and the other end is installed on the outer wall of the second sleeve (62); a third protrusion (72) is provided at the bottom of the third pressure plate (7); a fourth protrusion (45) is provided on the bottom plate of the main cylinder sleeve (4); one end of the third compression spring (10) is sleeved on the third protrusion (72), and the other end is sleeved on the fourth protrusion (45).

9. The electromechanical brake pedal according to claim 6, characterized in that: The main cylinder sleeve (4) comprises an upper cylinder body and a lower cylinder body, the upper cylinder body comprises a first cylinder barrel (41) and a second cylinder barrel (42) which are connected to each other in a stepped cylinder shape, a top plate (46) is arranged at one end of the first cylinder barrel (41), a through hole is opened at the center of the top plate (46), the first pressure plate (5) is slidably arranged on the inner wall of the first cylinder barrel (41); the inner diameter of the second cylinder barrel (42) is larger than the inner diameter of the first cylinder barrel (41), and the lower cylinder body comprises a third cylinder barrel (43) and a fourth cylinder barrel (42) which are connected to each other Cylinder (44), the inner wall of the second cylinder (42) is threadedly connected to the outer wall of the third cylinder (43), the inner diameter of the third cylinder (43) is greater than the inner diameter of the fourth cylinder (44), the inner diameter of the fourth cylinder (44) is equal to the inner diameter of the first cylinder (41), and the third pressure plate (7) is slidably arranged in the fourth cylinder (44); an annular limiting slider (521) is provided on the outer wall of the first sleeve (52), and the limiting slider (521) is slidably arranged in the third cylinder (43).

10. The electronic mechanical brake pedal according to claim 6, characterized in that: A piston protrusion (53) extending to the outside of the through hole of the top plate (46) is provided at the top center of the first plate body (51), a push rod groove (531) is provided at the top of the piston protrusion (53), and a push rod (3) is provided in the push rod groove (531); a fixing block (221) is provided on the side of the pedal arm (22) close to the piston protrusion (53), a circular groove (222) is provided on the fixing block (221), and a circular hemisphere (31) matching the circular groove (222) is fixed to the other end of the push rod (3).

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