Electronic pedal for brake-by-wire

Abstract

The utility model discloses an electronic pedal for drive-by-wire brake, which comprises a pedal seat, a pedal shaft, a pedal arm and a detection device, the pedal shaft is fixedly connected with the pedal arm and rotatably connected with the pedal seat, and the detection device comprises an induction assembly and a sensor assembly matched with the induction assembly in an induction mode. The induction assembly is fixedly or detachably arranged on the pedal shaft, the sensor assembly is detachably arranged on the pedal seat, a mounting hole is formed in the sensor assembly, the induction assembly partially penetrates through the mounting hole, the central axis of the pedal shaft, the central axis of the induction assembly, the central axis of the sensor assembly and the central axis of the mounting hole are collinear, and the sensor assembly is provided with a terminal interface. When the same sensor assembly is respectively arranged at the left side part and the right side part of the pedal seat, the terminal interfaces face the same direction. According to the electronic pedal, the sensor assemblies are installed on the left side portion and the right side portion of the pedal base in a replaceable mode, the structural size of the pedal base does not need to be increased, the orientation of the terminal interface does not need to be changed, and the detection device can be flexibly arranged left and right.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle brake equipment technical field, concretely relates to an electronic pedal for line control brake. BACKGROUND

[0002] The electronic pedal recognizes the intention of the driver through the pedal movement, and the pedal sensor sends the pedal signal processing to the domain control or the vehicle processor, and the vehicle brakes the brake execution unit according to the signal, thereby meeting the deceleration expectation of the driver.

[0003] In the prior art, the same pedal sensor can only be installed on the left side or the right side of the pedal seat, and cannot be installed on the left side and the right side alternately. If the pedal sensor installed on the left side of the pedal seat is installed on the right side of the pedal seat, the terminal interface will be opposite in direction, making it inconvenient to wire. Or if the terminal interface direction is not changed, the structure size of the pedal seat needs to be increased, so that the electronic pedal has higher space requirements and higher cost in the installation scene. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiency in the prior art, and provides an electronic pedal structure in which the sensor assembly can be installed on the left side and the right side of the pedal seat alternately without changing the structure size of the pedal seat and the direction of the terminal interface.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] An electronic pedal for line control brake, comprising a pedal seat, a pedal shaft, a pedal arm and a detection device for detecting the rotation angle of the pedal arm, the pedal shaft is fixedly connected with the pedal arm, the pedal shaft is rotatably arranged on the pedal seat, the detection device comprises a sensing assembly and a sensor assembly in sensing cooperation with the sensing assembly, the sensing assembly is fixedly or detachably arranged on the left end or / and right end of the pedal shaft, the sensor assembly is detachably arranged on the left side or / and right side of the pedal seat, and the sensor assembly and the sensing assembly are one-to-one corresponding arrangement, the sensor assembly is provided with a mounting hole for mounting the sensing assembly, the sensing assembly is partially arranged in the mounting hole, the center axis of the pedal shaft, the center axis of the sensing assembly, the center axis of the sensor assembly and the center axis of the mounting hole are arranged in line, the sensor assembly has a terminal interface, when the same sensor assembly is arranged on the left side and the right side of the pedal seat respectively, the terminal interface faces the same direction.

[0007] In some embodiments, the left and right sides of the pedal base are respectively provided with side plates for mounting the sensor assembly, and the spacing between the left and right side plates forms a receiving groove for accommodating the pedal arm, and the left and right side plates are symmetrically arranged.

[0008] In some embodiments, the sensor assembly comprises a housing, a first circuit board and a second circuit board, the housing is detachably connected with the pedal base, the first circuit board and the second circuit board are electrically connected, the first circuit board and the second circuit board are sequentially arranged along the left-right direction, and both are arranged on the side of the housing facing the sensing assembly, the first circuit board is arranged close to the sensing assembly, the mounting hole is arranged on the first circuit board, the terminal interface is arranged on the side of the housing away from the sensing assembly, and the center axis of the housing, the center axis of the first circuit board, the center axis of the second circuit board and the center axis of the mounting hole are arranged in line.

[0009] In some embodiments, the part of the pedal base where the sensor assembly is mounted is provided with a slotted opening with an open end face, the housing is arranged at the position where the slotted opening is open, so that a receiving cavity is formed between the housing and the pedal base, and the first circuit board, the second circuit board and the sensing assembly are all arranged in the receiving cavity.

[0010] In some embodiments, the terminal interface comprises a first terminal interface and a second terminal interface arranged side by side in the up-down direction, when the sensor assembly is arranged on the left side of the pedal base, the first terminal interface is located above the second terminal interface; when the sensor assembly is arranged on the right side of the pedal base, the first terminal interface is located below the second terminal interface.

[0011] In some embodiments, the pedal arm is integrally injection molded.

[0012] In some embodiments, the electronic pedal further comprises a pedal return damping arranged on the pedal base and located on the movement path of the pedal arm when released.

[0013] In some embodiments, the electronic pedal further comprises a limiting support detachably arranged on the pedal base, and the pedal return damping is fixedly arranged on the limiting support.

[0014] In some embodiments, the position of the limiting support on the pedal base is adjustable, and the position of the pedal return damping on the limiting support is adjustable.

[0015] In some embodiments, the electronic pedal further comprises a pedal stop damping arranged on the pedal base and located on the movement path of the pedal arm when braking.

[0016] Due to the use of the above technical scheme, the electronic pedal of the utility model has the following advantages compared with the prior art: in the electronic pedal, the central axis of the pedal shaft, the central axis of the induction assembly, the central axis of the sensor assembly and the central axis of the mounting hole are arranged in line, so that the sensor assembly can be installed on the left side and the right side of the pedal seat in a replaceable manner, without the need to increase the structural size of the pedal seat and without the need to change the orientation of the terminal interface, so as to not affect the wiring of the sensor assembly, so that the detection device can be matched with different vehicle models, and in the case that the space of the whole vehicle is relatively small, the detection device can be arranged flexibly on the left and right sides. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a perspective view of an electronic pedal for brake-by-wire of the embodiment; Figure 1 FIG. 2 is a perspective view of the electronic pedal for brake-by-wire of the embodiment (the sensor assembly is installed on the left side of the pedal seat);

[0018] FIG. 3 is a projection view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 2; Figure 2 FIG. 4 is a projection view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 1; Figure 1 FIG. 5 is a sectional view along the line A-A of the electronic pedal for brake-by-wire of the embodiment (enlarged view);

[0019] FIG. 6 is a sectional view along the line B-B of the electronic pedal for brake-by-wire of the embodiment (enlarged view); Figure 3 FIG. 7 is a sectional view along the line C-C of the electronic pedal for brake-by-wire of the embodiment (enlarged view); Figure 2 FIG. 8 is an exploded view of the electronic pedal for brake-by-wire of the embodiment.

[0020] FIG. 9 is a sectional view along the line A-A of the electronic pedal for brake-by-wire of the embodiment (enlarged view); Figure 4 FIG. 10 is a sectional view along the line B-B of the electronic pedal for brake-by-wire of the embodiment (enlarged view); Figure 2 FIG. 11 is a sectional view along the line C-C of the electronic pedal for brake-by-wire of the embodiment (enlarged view).

[0021] FIG. 12 is an exploded view of the electronic pedal for brake-by-wire of the embodiment. Figure 5 FIG. 13 is a schematic view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 1. Figure 2 FIG. 14 is a schematic view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 2.

[0022] FIG. 15 is a schematic view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 3. Figure 6 FIG. 16 is a schematic view of the electronic pedal for brake-by-wire of the embodiment in the state of FIG. 4.

[0023] 1, pedal seat; 11, side plate; 2, pedal arm; 3, pedal shaft; 31, first bushing; 32, pedal clamp spring; 33, second bushing; 4, induction assembly; 41, mounting portion; 42, magnet; 43, induction rotor; 5, sensor assembly; 51, housing; 52, first circuit board; 521, mounting hole; 53, second circuit board; 541, first terminal interface; 542, second terminal interface; 6, pedal return damping; 7, pedal stop damping; 8, limit support; 9, pedal simulator. DETAILED DESCRIPTION

[0024] In order to make the above objects, features and advantages of the present application more apparent, the present application will be described in detail below with reference to the drawings and specific embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners, which are different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0029] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a part is referred to as being "fixed to" or "disposed on" another part, it can be directly on the other part or an intervening part can be present. When a part is referred to as being "connected to" another part, it can be directly connected to the other part or an intervening part can be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms as used herein are for the purpose of description only and are not intended to be limiting.

[0030] As shown in the drawings, the electronic pedal for brake-by-wire includes a pedal base 1, a pedal arm 2, a pedal shaft 3, a detection device and a pedal simulator 9. Figures 1 to 6 The pedal arm 2 is rotatably connected to the pedal base 1 through the pedal shaft 3. In this embodiment, the pedal shaft 3 is fixedly arranged at one end of the pedal arm 2, and the pedal shaft 3 is rotatably connected to the pedal base 1. Specifically, the pedal arm 2 is provided with a first shaft hole, the first shaft hole is sleeved on the pedal shaft 3 and connected to the pedal shaft 3 through interference fit, so that the pedal arm 2 and the pedal shaft 3 are fixedly connected together. The pedal base 1 is provided with a second shaft hole, the second shaft hole is sleeved on the pedal shaft 3 and connected to the pedal shaft 3 through clearance fit, so that the pedal shaft 3 can rotate relative to the pedal base 1.

[0031] The detection device includes an inductive component 4 and a sensor component 5, the inductive component 4 and the sensor component 5 are inductively matched, so as to detect the rotation angle of the pedal arm 2. The inductive component 4 is fixedly arranged at the end of the pedal shaft 3, and the sensor component 5 is fixedly arranged on the pedal base 1, and the installation position of the sensor component 5 on the pedal base 1 corresponds to the position of the inductive component 4. When the driver applies force to the pedal arm 2 and rotates it, the pedal shaft 3 and the inductive component 4 rotate synchronously, causing the magnetic field to change, and the sensor component 5 generates a corresponding electrical signal according to the change of the magnetic field, that is, the rotation angle signal of the pedal arm 2, the electrical signal is output to the controller of the electronic mechanical brake system for calculating and identifying the deceleration intention of the driver, so as to realize accurate brake control.

[0032] In the electronic pedal, the sensor component 5 is provided with a mounting hole 521 for mounting the inductive component 4, the inductive component 4 is partially sleeved in the mounting hole 521, and the center axis of the pedal shaft 3, the center axis of the inductive component 4, the center axis of the sensor component 5 and the center axis of the mounting hole 521 are arranged in line, so that the same detection device can be installed on the left side or the right side, and considering the redundancy design, the same detection device can also be arranged on the left side and the right side at the same time.

[0033]

[0034] ​In the embodiment, the induction assembly 4 is fixedly or detachably arranged at the left end or the right end of the pedal shaft 3, the sensor assembly 5 is detachably arranged at the left side or the right side of the pedal base 1, and the sensor assembly 5 and the induction assembly 4 are arranged one by one, i.e. both are arranged at the left side, or both are arranged at the right side, or both are arranged at the left and right sides. When the induction assembly 4 can only be connected at one end of the pedal shaft 3, if the detection device needs to be installed at the left side or the right side, the pedal shaft 3 can be exchanged in the left-right direction.

[0035] In the embodiment, as shown in Figure 6 , one end of the pedal shaft 3 is provided with a first bushing 31 and a pedal clamp spring 32, the other end of the pedal shaft 3 is provided with a second bushing 33, and the induction assembly 4 is connected to the other end of the pedal shaft 3. The pedal clamp spring 32 is clamped at the end of the first bushing 31 to prevent the pedal shaft 3 from falling off. The first bushing 31 and the second bushing 33 are used to reduce the wear of the pedal shaft 3 and the pedal base 1.

[0036] Specifically, as shown in Figure 3 , the induction assembly 4 includes a mounting portion 41, a magnet 42 and an induction rotor 43 arranged coaxially, the mounting portion 41 is fixedly or detachably connected with the pedal shaft 3, and the two are coaxially arranged. The magnet 42 and the induction rotor 43 are both arranged on the mounting portion 41.

[0037] As shown in Figure 3 , the sensor assembly 5 includes a housing 51, a first circuit board 52 and a second circuit board 53. The housing 51 is detachably connected with the pedal base 1. The first circuit board 52 and the second circuit board 53 are electrically connected, and the first circuit board 52 and the second circuit board 53 are sequentially and spacedly arranged along the left-right direction, and both are arranged on the side of the housing 51 facing the induction assembly 4, and the first circuit board 52 is arranged close to the induction assembly 4. The first circuit board 52 is provided with an inductor coil, and the second circuit board 53 is provided with a Hall sensor chip. A mounting hole 521 is arranged on the first circuit board 52, and the mounting portion 41 is arranged in the mounting hole 521, so that a gap between the magnet 42 and the Hall sensor chip meets the requirement of electromagnetic induction, and a gap between the induction rotor 43 and the inductor coil meets the requirement of inductive induction.

[0038] The center axis of the housing 51, the center axis of the first circuit board 52, the center axis of the second circuit board 53 and the center axis of the mounting hole 521 are arranged in line, and the center axis of the housing 51, the center axis of the first circuit board 52 and the center axis of the second circuit board 53 are the center axis of the sensor assembly 5.

[0039] The sensor assembly 5 also has a terminal interface, which is arranged on the side of the housing 51 away from the induction assembly 4. When the same sensor assembly 5 is arranged at the left side and the right side of the pedal base 1, the terminal interface faces the same direction, as shown inFigure 1 、 Figure 3 and Figure 4 Thus, the sensor assembly 5 does not affect the wiring of the sensor assembly 5 after being installed on the left side and the right side.

[0040] In this embodiment, the terminal interface includes a first terminal interface 541 and a second terminal interface 542 arranged side by side in the up-down direction. When the sensor assembly 5 is arranged on the left side of the pedal seat 1, the first terminal interface 541 is located above the second terminal interface 542. When the sensor assembly 5 is arranged on the right side of the pedal seat 1, the first terminal interface 541 is located below the second terminal interface 542, as shown in Figure 1 、 Figure 3 and Figure 4

[0041] The pedal seat 1 is provided with side plates 11 on the left and right sides, respectively. The interval between the side plates 11 on the left and right sides forms a receiving groove in which part of the pedal arm 2 is rotatably arranged. The side plates 11 on the left and right sides are used to mount the sensor assembly 5, and preferably, the side plates 11 on the left and right sides are symmetrically arranged.

[0042] Each side plate 11 is provided with a slotted opening with an open end. When the sensor assembly 5 is mounted on the side plate 11, the housing 51 is arranged at the position where the slotted opening is open. This forms a receiving cavity between the housing 51 and the side plate 11, and the first circuit board 52, the second circuit board 52, and the sensing assembly 4 are arranged in the receiving cavity. This makes the structure of the electronic pedal smaller in the axial direction of the pedal shaft 3, and reduces the space and cost requirements in the installation scene.

[0043] As shown in Figure 4 and Figure 5 , the electronic pedal further includes a pedal return damping 6 and a pedal stop damping 7. When the electronic pedal is released to return the pedal arm 2, the pedal return damping 6 buffers the pedal arm 2 and reduces the noise caused by the impact of the pedal arm 2 and the pedal seat 1. When braking is performed to rotate the pedal arm 2, the pedal stop damping 7 buffers the pedal arm 2 and reduces the noise caused by the impact of the pedal arm 2 and the pedal seat 1.

[0044] In this embodiment, the pedal arm 2 is integrally injection molded, and the pedal return damping 6 and the pedal stop damping 7 are arranged on the pedal seat 1. The pedal return damping 6 is located on the pedal seat 1 on the movement path of the pedal arm 2 when released, and the pedal stop damping 7 is located on the pedal seat 1 on the movement path of the pedal arm 2 when braked. This makes the pedal arm 2 simple in structure, facilitates the injection molding of the pedal arm 2, and reduces the production cost of the pedal arm 2.

[0045] ​The pedal return damping 6 and the pedal stop damping 7 are both made of rubber material. The pedal return damping 6 and the pedal stop damping 7 both include a connecting part and a bearing part, the connecting part is embedded in the pedal seat 1, and the bearing part is at least partially outside the pedal seat 1, the bearing part is conical, and the small end of the cone is arranged towards the pedal arm 2.

[0046] The electronic pedal further includes a limiting support 8 detachably arranged on the pedal seat 1, and the pedal return damping 6 is fixedly arranged on the limiting support 8. Therefore, the pedal return damping 6 can be replaced according to different requirements without changing the pedal seat 1 and the pedal arm 2, and the cost can be reduced.

[0047] The position of the limiting support 8 on the pedal seat 1 can be adjusted, and the position of the pedal return damping 6 on the limiting support 8 can be adjusted, so that the installation position of the pedal return damping 6 on the pedal seat 1 is more flexible.

[0048] The pedal simulator 9 is arranged below the pedal arm 2, the pedal simulator 9 is telescopic, and the two ends of the telescopic direction of the pedal simulator 9 are respectively flexibly connected with the pedal arm 2 and the pedal seat 1, so that the pedal simulator 9 can rotate with the pedal arm 2 when the pedal arm 2 rotates. Meanwhile, the pedal simulator 9 can be telescopic when the pedal arm 2 rotates, so that the pedal simulator 9 can provide a suitable pedal feeling while outputting the braking intention of the driver. The pedal simulator 9 can adopt the structure in the prior art.

[0049] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. An electronic pedal for brake-by-wire, comprising a pedal base, a pedal shaft, a pedal arm and a detection device for detecting the rotation angle of the pedal arm, the pedal shaft being fixedly connected with the pedal arm, the pedal shaft being rotatably arranged on the pedal base, characterized in that: The detection device comprises an inductive component and a sensor component in inductive cooperation with the inductive component, the inductive component is fixedly or detachably arranged at the left end or the right end of the pedal shaft, the sensor component is detachably arranged at the left side or the right side of the pedal base, and the sensor component is arranged in one-to-one correspondence with the inductive component, the sensor component is provided with a mounting hole for mounting the inductive component, the inductive component is partially arranged in the mounting hole, the center axis of the pedal shaft, the center axis of the inductive component, the center axis of the sensor component and the center axis of the mounting hole are arranged in line, the sensor component has a terminal interface, and when the same sensor component is arranged at the left side and the right side of the pedal base respectively, the terminal interface faces the same direction.

2. Electronic pedal for brake-by-wire according to claim 1, characterized in that: The left and right sides of the pedal base are respectively provided with side plates for mounting the sensor components, and the interval between the left and right side plates forms a containing groove for containing the pedal arm, and the left and right side plates are symmetrically arranged.

3. An electronic brake pedal for brake-by-wire according to claim 1, characterized in that: The sensor component comprises a housing, a first circuit board and a second circuit board, the housing is detachably connected with the pedal base, the first circuit board and the second circuit board are electrically connected, the first circuit board and the second circuit board are sequentially and spacedly arranged along the left-right direction, and both are arranged at the side of the housing facing the inductive component, the first circuit board is arranged close to the inductive component, the mounting hole is arranged on the first circuit board, the terminal interface is arranged at the side of the housing away from the inductive component, and the center axis of the housing, the center axis of the first circuit board, the center axis of the second circuit board and the center axis of the mounting hole are arranged in line.

4. Electronic pedal for brake-by-wire according to claim 3, characterized in that: The part of the pedal base mounting the sensor component is provided with a slotted opening with an open end face, the housing is arranged at the position where the slotted opening is open, so that a containing cavity is formed between the housing and the pedal base, and the first circuit board, the second circuit board and the inductive component are all arranged in the containing cavity.

5. The electronic brake pedal for brake-by-wire according to claim 1, characterized in that: The terminal interface comprises a first terminal interface and a second terminal interface arranged side by side in the up-down direction, when the sensor component is arranged at the left side of the pedal base, the first terminal interface is located above the second terminal interface, and when the sensor component is arranged at the right side of the pedal base, the first terminal interface is located below the second terminal interface.

6. An electronic brake pedal for brake-by-wire according to claim 1, characterized in that: The pedal arm is integrally injection molded.

7. Electronic pedal for brake-by-wire according to claim 6, characterized in that: The electronic pedal further comprises a pedal return damping, which is arranged on the pedal base and located on the movement path of the pedal arm when released.

8. Electronic brake pedal for brake-by-wire, according to claim 7, characterized in that: The electronic pedal further comprises a limiting support detachably arranged on the pedal base, and the pedal return damping is fixedly arranged on the limiting support.

9. Electronic brake pedal for brake-by-wire according to claim 8, characterized in that: The position of the limiting support on the pedal base is adjustable, and the position of the pedal return damping on the limiting support is adjustable.

10. An electronic brake pedal for brake-by-wire according to claim 6, characterized in that: The electronic pedal further comprises a pedal stop damping, which is arranged on the pedal base and located on the movement path of the pedal arm when braking.

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