New energy brake pedal assembly and new energy automobile

Abstract

The invention relates to the technical field of new energy automobile accessories, in particular to a new energy brake pedal assembly and a new energy automobile. A new energy brake pedal assembly comprises a pedal arm, the two ends, in the extending direction, of the pedal arm are the first end and the second end respectively, and a connecting part is arranged between the first end and the second end; the connecting part is rotatably connected with the fixed bracket; the second end is used for driving the movable column to move in the first direction; the limiting plate is connected with the movable column; an elastic contact of the elastic contact type slide rheostat abuts against one side of the limiting plate. And the circuit board is electrically connected with the elastic contact type slide rheostat. Compared with the prior art, the technical problem that in the process that the swing angle of the pedal arm is measured through an angle sensor, an angle signal output by the angle sensor is prone to being unreliable is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy automobile accessories, and in particular to a new energy brake pedal assembly and a new energy automobile. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source and have new technologies and structures. New energy brake pedal assemblies are an important part of new energy vehicles.

[0003] In the prior art, an angle sensor is usually installed on the fixed bracket of the new energy brake pedal assembly. The angle sensor contains a magnet and a circuit board. The magnet inside the angle sensor rotates with the swing of the pedal arm. The chip on the circuit board senses the change in the magnetic field of the magnet and outputs the corresponding voltage. At this time, the angle of the magnet can be set to be related to the voltage, and the angle travel-voltage correlation curve can be output. The voltage signal generated by the sensor is transmitted to the VCU (central control unit) to monitor the pedal travel.

[0004] However, the angle sensor usually contains electromagnetic components, which leads to its weak anti-interference ability. The assembled parts of new energy vehicles contain multiple magnets. When the angle sensor is in a magnetic field, the angle sensor will be affected by electromagnetic interference, which will cause the angle signal output by the angle sensor to have large fluctuations and large errors, which will cause the voltage signal output by the circuit board to have large fluctuations and large errors, which will cause the VCU (central control unit) to misjudge whether the pedal is pressed at this time.

[0005] Therefore, the technical problem existing in the prior art is that, in the process of measuring the swing angle of the pedal arm by using the angle sensor, it is easy for the angle signal output by the angle sensor to be unreliable. Summary of the invention

[0006] In view of the technical problem existing in the prior art, in the process of measuring the swing angle of the pedal arm by using the angle sensor, it is easy for the angle signal output by the angle sensor to be unreliable. The present invention provides a new energy brake pedal assembly.

[0007] The present invention is achieved through the following technical solutions:

[0008] A new energy brake pedal assembly comprises a pedal arm, wherein two ends of the pedal arm along an extension direction are respectively a first end and a second end, and a connecting portion is provided between the first end and the second end;

[0009] It also includes a fixed bracket, and the connecting portion is rotatably connected to the fixed bracket;

[0010] Also included is a movable column, the second end of which is used to drive the movable column to move along a first direction, wherein the first direction forms an acute angle with the extension direction of the pedal arm;

[0011] It also includes a limit plate, which is connected to the movable column;

[0012] It also includes an elastic contact type sliding rheostat, which is located between the second end and the limit plate along the first direction; the shell of the elastic contact type sliding rheostat is connected to the fixed bracket, and the elastic contact of the elastic contact type sliding rheostat abuts against one side of the limit plate;

[0013] It also includes a circuit board, and the elastic contact type sliding rheostat is electrically connected to the circuit board.

[0014] Furthermore, the fixed bracket is provided with a first limit surface, and the first limit surface is parallel to the plate surface of the limit plate; the limit plate is located between the contact of the elastic contact type sliding rheostat and the first limit surface;

[0015] It also includes a first spring, the axis of which is arranged along a first straight line; and along the first direction, the first spring is located between the limiting plate and the first limiting surface.

[0016] Furthermore, it also includes a guide portion, the guide portion is connected to the fixed bracket, the guide portion is provided with a guide channel, and the guide channel extends along the first direction;

[0017] The movable column is arranged in the guide channel, and the outer surface of the movable column is in sliding contact with the inner wall of the guide channel.

[0018] Furthermore, a first receiving groove is provided on one side of the movable column facing the second end, and the first receiving groove is recessed along the first direction;

[0019] The second end is rotatably connected with a first abutting portion, and one end of the first abutting portion is inserted into the first containing groove along the first direction and abuts against the groove bottom wall of the first containing groove.

[0020] Furthermore, along the radial direction of the movable column, there is a gap between the outer surface of the first abutting portion and the groove side wall of the first accommodating groove, and the gap gradually decreases along the first direction;

[0021] Furthermore, one end of the first abutting portion inserted into the first receiving groove has an arc-shaped outer surface, and the bottom wall of the first receiving groove is also an arc-shaped bottom wall.

[0022] Furthermore, the first spring is a conical spring.

[0023] Furthermore, it also includes a second abutting portion and a push rod, one end of the second abutting portion abuts against a side of the movable column away from the second end; the other end of the second abutting portion is used to drive the push rod to move along the first direction;

[0024] It also includes a double-chamber brake master valve, the shell of which is connected to the fixed bracket along the second direction, and the piston rod of which also extends along the second direction; wherein the second direction is perpendicular to the first direction;

[0025] It also includes a right-angle swing arm, which is located between the top rod and the piston rod of the double-chamber brake master valve; the right-angle swing arm includes a first swing arm and a second swing arm that are connected and at a right angle;

[0026] The second swing arm is provided with a support hole, and also includes a support rod, the middle part of the support rod passes through the support hole, the two ends of the support rod are fixed to the fixing bracket, and the hole wall of the support hole can rotate relative to the outer surface of the support rod;

[0027] One end of the push rod is in contact with the first swing arm, and the piston rod of the double-chamber brake master valve is hinged to the connection between the first swing arm and the second swing arm.

[0028] Furthermore, it also includes a positioning block, which is connected to the first swing arm;

[0029] It also includes a torsion spring, the axis of which is perpendicular to the extension directions of the first swing arm and the second swing arm respectively, one end of the torsion spring abuts against the positioning block, and the other end abuts against the fixing bracket.

[0030] Furthermore, it also includes an angle sensor, wherein the housing of the angle sensor is connected to the fixing bracket;

[0031] Also includes a pin body, the pin body is connected to the pedal arm, and the position where the pin body is connected to the pedal arm is located between the first end and the second end of the pedal arm;

[0032] It also includes a shift fork, the shaft of which is connected to the input end of the angle sensor, the fork body of which can be movably clamped on the outer surface of the pin body, and the fork body of the shift fork is clearance-matched with the outer surface of the pin body.

[0033] A new energy vehicle is also proposed, which includes the new energy brake pedal assembly mentioned above.

[0034] Compared with the prior art, the advantages of the present invention are:

[0035] 1. In the present invention, an elastic contact type sliding rheostat is used to replace the angle sensor in the prior art. The elastic contact type sliding rheostat does not use electromagnetic components inside and has the characteristic of high anti-electromagnetic interference performance. When the elastic contact type sliding rheostat is in a magnetic field, it can still maintain a relatively accurate output, is not affected by electromagnetic interference or is less affected by electromagnetic interference. The output signal of the elastic contact type sliding rheostat has smaller fluctuation and error, which also leads to smaller fluctuation and error of the output signal of the circuit board. Therefore, compared with the prior art, the present invention solves the technical problem that in the process of measuring the swing angle of the pedal arm by the angle sensor, the angle signal output by the angle sensor is easily unreliable.

[0036] 2. In the present invention, the moving directions of the movable column, the second abutting portion and the push rod are all along the first direction, the shell of the double-chamber brake master valve and the piston rod of the double-chamber brake master valve all extend along the second direction, and the first direction and the second direction are perpendicular to each other. In this way, in the present invention, the movement of the movable column, the second abutting portion and the push rod along the first direction is converted into the movement of the piston rod along the second direction through the right-angle swing arm, which can save the space occupied by the new energy brake pedal assembly along the first direction; further, in actual application, it can avoid the problem of interference between the double-chamber brake master valve and the steering column of the cab when braking in the first direction, more effectively utilize the internal space of the cab, meet the use needs of more mature cabs, and further solve the problem that the driving reversing structure designed for the existing technology product, i.e. the larger double-chamber brake master valve, cannot be accommodated due to the narrow space in the cab.

[0037] 3. In the present invention, the input end of the angle sensor is not directly connected to the shaft of the pedal arm, that is, the connecting part in the present invention, but through the provided shift fork, the input end of the angle sensor is indirectly connected to the shaft of the pedal arm, and the fork body of the shift fork and the pin body are fitted with a movable gap. During the axial vibration of the pedal arm, even if the pedal arm drives the pin body to vibrate axially, due to the gap between the fork body of the shift fork and the pin body, that is, the pin body and the shift fork are only partially in contact or not in contact, the energy of the axial vibration of the pin body can only be partially transmitted to the shift fork, or cannot be transmitted to the shift fork. Compared with the prior art, the axial vibration energy directly transmitted by the pedal arm to the input end of the angle sensor is greatly reduced, resulting in a small axial shaking amount of the angle sensor, and further avoiding the dislocation or displacement of the magnet inside the angle sensor due to vibration. The output signal of the angle sensor of the present invention is more relatively accurate and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the new energy brake pedal assembly of the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the middle circle area;

[0040] Figure 3 It is a structural schematic diagram of the elastic contact type sliding rheostat of the present invention;

[0041] Figure 4 It is a schematic diagram of the connection between the elastic contact type sliding rheostat and the circuit;

[0042] Figure 5 It is a schematic structural diagram of the second abutting portion and the ejector rod of the present invention;

[0043] Figure 6 It is a schematic diagram of the right-angle swing arm and its surrounding structure of the present invention;

[0044] Figure 7 It is a structural schematic diagram of the right-angle swing arm of the present invention;

[0045] Figure 8 For the present invention Figure 1 A schematic diagram of the structure from another perspective;

[0046] Fig. 9 Schematic diagram of the structure of the angle sensor and pedal arm after partially hiding the fixing bracket.

[0047] Fig.10 It is a schematic structural diagram of the shift fork of the present invention.

[0048] Markings in the figure: pedal arm (1), connecting portion (2), fixing bracket (3), movable column (4), limiting plate (5), elastic contact type sliding rheostat (6), circuit board (7), first limiting surface (8), first spring (9), guide portion (10), guide channel (11), first accommodating groove (12), first abutting portion (13), second abutting portion (14), push rod (15), double-chamber brake master valve (16), right-angle swing arm (17), first swing arm (18), second swing arm (19), positioning block (20), torsion spring (21), angle sensor (22), pin body (23), shift fork (24), support rod (25), support hole (26), plastic bushing (27). DETAILED DESCRIPTION

[0049] The following is a further non-restrictive detailed description of the technical solution of the invention in conjunction with the preferred embodiments and the accompanying drawings. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and cannot be understood as limitations on the present invention.

[0050] Example 1

[0051] like Figure 1-2 As shown, a new energy brake pedal assembly includes a pedal arm 1, wherein the two ends of the pedal arm 1 along the extension direction are respectively a first end and a second end, and a connecting portion 2 is arranged between the first end and the second end; it also includes a fixed bracket 3, and the connecting portion 2 is rotatably connected to the fixed bracket 3; it also includes a movable column 4, and the second end is used to drive the movable column 4 to move along the first direction, wherein the first direction forms an acute angle with the extension direction of the pedal arm 1; it also includes a limit plate 5, and the limit plate 5 is connected to the movable column 4; it also includes an elastic contact type sliding rheostat 6, and along the first direction, the elastic contact type sliding rheostat 6 is located between the second end and the limit plate 5; the shell of the elastic contact type sliding rheostat 6 is connected to the fixed bracket 3, and the elastic contact of the elastic contact type sliding rheostat 6 abuts against one side of the limit plate 5; it also includes a circuit board 7, and the elastic contact type sliding rheostat 6 is electrically connected to the circuit board 7.

[0052] The pedal arm 1 can be made of metal and is used to transmit the pedaling force of the driver's foot. The two ends of the pedal arm 1 along the extension direction are respectively a first end and a second end. In this embodiment, the first end is used to install the pedal, and the second end is used to drive the movable column 4 to move along the first direction. The pedal arm 1 has a connecting portion 2, and the connecting portion 2 is rotatably connected to the fixed bracket 3. In this embodiment, the connecting portion 2 and the fixed bracket 3 are connected in a pivot connection manner.

[0053] The first direction forms an acute angle with the extension direction of the pedal arm 1. Specifically, when the pedal is in a relaxed state, that is, when the driver is not stepping on the pedal, the first direction forms an acute angle with the extension direction of the pedal arm 1, and the size of the acute angle is configured according to the specific situation. In the present embodiment, the first direction is parallel to the horizontal direction.

[0054] In this embodiment, a first receiving groove 12 is provided on one side of the movable column 4 facing the second end, and the first receiving groove 12 is recessed along the first direction; the second end is rotatably connected with a first abutting portion 13, one end of the first abutting portion 13 is inserted into the first receiving groove 12 along the first direction, and abuts against the bottom wall of the first receiving groove 12; the second end drives the movable column 4 to move along the first direction through the first abutting portion 13, and along the radial direction of the movable column 4, the first abutting portion 13 and the first receiving groove 12 are difficult to separate through the first receiving groove 12. Preferably, the second end and the first abutting portion 13 can be connected in a hinged manner.

[0055] Further preferably, along the radial direction of the movable column 4, there is a gap between the outer surface of the first abutment portion 13 and the side wall of the first accommodating groove 12, and the gap gradually decreases along the first direction; in this embodiment, along the radial direction of the movable column 4, the first abutment portion 13 can be relatively movable in the first accommodating groove 12, so that during the assembly process or when the driver steps on the pedal and the pedal arm swings, the radial gap between the first abutment portion 13 and the first accommodating groove 12 is compensated, thereby avoiding the first abutment portion 13 and the first accommodating groove 12 from having a hard contact along the radial direction of the movable column 4 when the pedal arm swings, causing the side wall of the first accommodating groove 12 to give a reaction force to the pedal through the first abutment portion 13, further causing the side wall of the first accommodating groove 12 to limit the swing displacement of the pedal through the first abutment portion 13, causing the driver to be unable to step on the pedal or the pedal to be out of position.

[0056] Further preferably, the end of the first abutting portion 13 inserted into the first receiving groove 12 is an arc-shaped outer surface, and the bottom wall of the first receiving groove 12 is also an arc-shaped bottom wall. In this embodiment, the first abutting portion 13 and the first receiving groove 12 are in an arc-shaped surface-to-arc surface contact relationship, so that the end of the first abutting portion 13 inserted into the first receiving groove 12 is in rolling contact with the bottom wall of the first receiving groove 12 to reduce the friction between the two.

[0057] The limiting plate 5 is a plate-like structure, and the limiting plate 5 is connected to the movable column 4 in a connection manner that can be one of those in the prior art, for example, the limiting plate 5 and the movable column 4 are detachably connected via a connecting component, which is not limited here.

[0058] The elastic contact type sliding rheostat 6 is a known structure in the prior art and is easily available. In this embodiment, the elastic contact type sliding rheostat 6 adopts the American BI404R1KL1.0 sliding elastic contact type sliding rheostat. Since it is a prior art, only a brief introduction is given here. Figure 3 As shown, it includes: a housing, an elastic contact, a brush head, a return spring, a fixed housing, screws, a terminal block, and a ceramic plate. When in use, when the elastic contact is pushed out by the return spring, the elastic contact drives the brush head to move, and the distance between the brush head and the resistance layer on the ceramic plate changes, thereby changing the output voltage.

[0059] The elastic contact type sliding resistor 6 is electrically connected to the circuit board 7. In this embodiment, the circuit of the elastic contact type sliding resistor 6 and the circuit board 7 is as follows: Figure 4 As shown, the two ends of the input voltage are respectively connected to the two ends of the resistance layer of the ceramic plate, and one end of the output voltage is connected to the brush head, and then the circuit board 7 outputs different voltages by changing the position of the brush head on the resistance layer. Figure 1-2 When in use, when the driver steps on the pedal, the pedal swings clockwise with the connecting part 2 as the axis, causing the second end to move toward the first direction, the second end drives the movable column 4 to move along the first direction, the movable column 4 drives the limit plate 5 to move along the first direction, the elastic contact of the elastic contact type sliding rheostat 6 extends along the first direction, the resistance of the elastic contact type sliding rheostat 6 changes, and the circuit board converts the changed resistance value into a changed voltage signal output.

[0060] As can be seen from the background art, in the prior art, there is a technical problem that, in the process of measuring the swing angle of the pedal arm by using the angle sensor, it is easy for the angle signal output by the angle sensor to be unreliable.

[0061] In the present embodiment, an elastic contact type sliding rheostat 6 is used to replace the angle sensor in the prior art. The elastic contact type sliding rheostat 6 does not use electromagnetic components inside and has the characteristic of high anti-electromagnetic interference performance. When the elastic contact type sliding rheostat 6 is in a magnetic field, it can still maintain a relatively accurate output, is not affected by electromagnetic interference or is less affected by electromagnetic interference. The output signal of the elastic contact type sliding rheostat 6 has smaller fluctuation and smaller error, which also leads to smaller fluctuation and smaller error of the output signal of the circuit board. Therefore, compared with the prior art, the present embodiment solves the technical problem that in the process of measuring the swing angle of the pedal arm by using the angle sensor, the angle signal output by the angle sensor is easily unreliable.

[0062] Furthermore, it is mentioned in the aforementioned content that "when the driver steps on the pedal, the pedal swings clockwise with the connecting part 2 as the axis, ... the elastic contact of the elastic contact type sliding rheostat 6 extends along the first direction." Therefore, after the driver releases the pedal, how the elastic contact of the elastic contact type sliding rheostat 6 automatically returns to its position is a technical problem that needs to be solved. This technical problem is solved by the following technical solution.

[0063] The fixed bracket 3 is provided with a first limit surface 8, and the first limit surface 8 is parallel to the plate surface of the limit plate 5; the limit plate 5 is located between the elastic contact of the elastic contact type sliding rheostat 6 and the first limit surface 8; it also includes a first spring 9, the axis of the first spring 9 is arranged along the first straight line; and, along the first direction, the first spring 9 is located between the limit plate 5 and the first limit surface 8.

[0064] When in use, when the driver steps on the pedal, the pedal swings clockwise with the connecting part 2 as the axis, and the second end, the movable column 4, and the limit plate 5 all move along the first direction, and the limit plate 5 squeezes the first spring 9 along the first direction, and the first spring 9 is compressed; when the driver releases the pedal, the first spring 9 stretches and bounces open under the action of its own elastic force, and the first spring 9 drives the limit plate 5 and the movable column 4 to move in the opposite direction of the first direction, and the limit plate 5 squeezes the elastic contact of the elastic contact type sliding rheostat 6, so that the elastic contact returns to its original position. Therefore, this embodiment solves the technical problem of how the elastic contact of the elastic contact type sliding rheostat 6 automatically returns to its original position after the driver releases the pedal.

[0065] Preferably, the first spring 9 is a conical spring, which has the characteristics of reducing radial space utilization and preventing coil merging.

[0066] Furthermore, the present embodiment also includes the following technical solutions: the new energy brake pedal assembly also includes a guide portion 10, the guide portion 10 is connected to the fixed bracket 3, the guide portion 10 is provided with a guide channel 11, and the guide channel 11 extends along the first direction; the movable column 4 is passed through the guide channel 11, and the outer surface of the movable column 4 is in sliding contact with the inner wall of the guide channel 11.

[0067] The connection method between the guide part 10 and the fixed bracket 3 can adopt one of the existing technologies, which is not limited here; in this embodiment, the guide part 10 is a cylindrical structure. In this embodiment, the guide channel 11 is arranged in the guide part 10, which guides the moving direction of the movable column 4, thereby allowing the movable column 4 to move smoothly along the first direction.

[0068] like Figure 5 to Figure 7As shown, further, the present embodiment also includes the following technical solutions: a new energy brake pedal assembly, which also includes a second abutment portion 14 and a push rod 15, one end of the second abutment portion 14 abuts against the side of the movable column 4 away from the second end; the other end of the second abutment portion 14 is used to drive the push rod 15 to move along the first direction; it also includes a double-chamber brake master valve 16, the shell of the double-chamber brake master valve 16 is connected to the fixed bracket 3 along the second direction, and the piston rod of the double-chamber brake master valve 16 also extends along the second direction; it also includes a right-angle swing arm 17, the right-angle swing arm 17 is located at the top The right-angle swing arm 17 includes a first swing arm 18 and a second swing arm 19 which are connected and at right angles to each other; a support hole 26 is provided on the second swing arm 19, and also includes a support rod 25, the middle part of the support rod 25 passes through the support hole 26, the two ends of the support rod 25 are fixed to the fixed bracket 3, and the hole wall of the support hole 26 can rotate relative to the outer surface of the support rod 25; one end of the top rod 15 is in contact with the first swing arm 18, and the piston rod of the double-chamber brake master valve 16 is hinged at the connection between the first swing arm 18 and the second swing arm 19.

[0069] The connection relationship between the second abutment portion 14 and the push rod 15 can adopt one of the existing technologies, which is not limited here; the positional relationship and structural configuration between the second abutment portion 14 and the movable column 4 are similar to the positional relationship and structural configuration between the first abutment portion 13 and the movable column 4, and will not be repeated here. The structure of the double-chamber brake master valve 16 is a prior art, and will not be described in detail. The double-chamber brake master valve 16, also referred to as the master valve, can be used in the following functions in new energy vehicles according to the design requirements of the vehicle model: 1. The vehicle brake adopts a hybrid mode, and both electric brakes and air brakes can be used. The master valve acts as a valve, and the upper chamber controls the opening or closing of the brake air circuit of the rear axle module, and the lower chamber controls the opening or closing of the brake air circuit of the front axle module. When the driver steps on the brake, the first half is the electric brake, and after the electric brake, it is the air brake, which is beneficial to fuel saving and does not affect the endurance. The double-chamber brake master valve is beneficial to alleviate the problems of "car nodding" and "tire drag brake" caused by the driving inertia of the front and rear axle modules during the braking process; 2. The vehicle brake adopts a pure electric mode. At this time, the double-chamber brake master valve plays a role of insurance and does not work during normal driving. When the circuit part loses the braking effect due to a fault, the air brake takes effect at this time, thereby reducing personal safety accidents caused by vehicle failures. The above-mentioned master valve function is also a prior art, which can be understood as a reference.

[0070] In this embodiment, when in use, the driver steps on the pedal, the pedal arm swings clockwise, the movable column 4 moves along the first direction, driving the push rod 15 to move along the first direction, the push rod 15 pushes the first swing arm 18 along the first direction, and then the first swing arm 18 rotates with the support rod 25 as the rotation axis, and then drives the second swing arm 19 to rotate with the support rod 25 as the rotation axis, and the connection between the first swing arm 18 and the second swing arm 19 also rotates. The rotation of the connection between the first swing arm 18 and the second swing arm 19 will simultaneously drive the piston rod of the double-chamber brake master valve 16 hinged to the connection to swing, and this swing will cause the end of the piston rod hinged to the connection to move along the second direction and rotate around the support rod 25 at the same time; and then the piston rod pushes the piston of the double-chamber brake master valve 16 to work along the second direction. Among them, the second direction is perpendicular to the first direction. In this embodiment, the first direction and the second direction are parallel to the horizontal plane.

[0071] In the present embodiment, the moving directions of the movable column 4, the second abutment portion 14, and the push rod 15 are all along the first direction, and the shell of the dual-chamber brake master valve 16 and the piston rod of the dual-chamber brake master valve 16 extend along the second direction, and the first direction and the second direction are perpendicular to each other. In this way, in the present embodiment, the movement of the movable column 4, the second abutment portion 14, and the push rod 15 along the first direction is converted into the movement of the piston rod along the second direction through the right-angle swing arm 17, which can save the space occupied by the new energy brake pedal assembly along the first direction; further, in actual application, it can avoid the problem of interference between the dual-chamber brake master valve 16 and the steering column of the cab when braking in the first direction, more effectively utilize the internal space of the cab, meet the use needs of more mature cabs, and further solve the problem that the driving reversing structure designed for the existing technology product, i.e., the larger dual-chamber brake master valve, cannot be accommodated due to the narrow space in the cab.

[0072] Furthermore, the present embodiment also includes the following technical solutions: the new energy brake pedal assembly also includes a positioning block 20, which is connected to the first swing arm 18; it also includes a torsion spring 21, and the axis of the torsion spring 21 is perpendicular to the extension direction of the first swing arm 18 and the second swing arm 19 respectively, one end of the torsion spring 21 abuts against the positioning block 20, and the other end abuts against the fixed bracket 3.

[0073] In this embodiment, when the driver steps on the pedal, the pedal arm swings clockwise, the right-angle swing arm 17 swings, and the torsion spring 21 is compressed. After the driver releases the pedal, the torsion spring 21 is resiliently opened, driving the right-angle swing arm 17 and the piston rod to return to their original positions. That is, this solution is used to return the piston rod to its original position after the driver releases the pedal.

[0074] like Figure 8-Figure 9As shown, further, the present embodiment also includes the following technical solutions: the new energy brake pedal assembly also includes an angle sensor 22, the shell of the angle sensor 22 is connected to the fixed bracket 3; it also includes a pin body 23, the pin body 23 is connected to the pedal arm 1, and the position where the pin body 23 is connected to the pedal arm 1 is located between the first end and the second end of the pedal arm 1; it also includes a fork 24, the shaft of the fork 24 is connected to the input end of the angle sensor 22, the fork body of the fork 24 can be movably stuck on the outer surface of the pin body 23, and the fork body of the fork 24 is gap-matched with the outer surface of the pin body 23.

[0075] The angle sensor 22 is a sensor for measuring the swing angle, and its structure is the prior art. The structure of the fork 24 is also the prior art, and the two ends of the fork 24 are respectively a shaft body and a fork body; the shaft body of the fork 24 is connected to the input end of the angle sensor 22, and its connection method can adopt one of the prior art, for example, Fig.10 As shown, a rectangular hole is processed on the shaft of the shift fork 24, and the cross-section of the input end of the angle sensor 22 is configured to be rectangular. The rectangular hole of the shaft of the shift fork 24 is interference-fitted on the input end of the angle sensor 22 to achieve connection and fixation; when the fork body of the shift fork 24 is movably clamped on the outer surface of the pin body 23, the extension direction of the fork body is perpendicular to the axis of the pin body 23; specifically, the fork body of the shift fork 24 is movably clamped on the outer surface of the pin body 23, and the fork body of the shift fork 24 can rotate relative to the pin body 23, and can also move along the axial direction of the pin body 23, that is, there is a clearance fit and a gap between the fork body of the shift fork 24 and the pin body 23.

[0076] In the prior art, the housing of the angle sensor is usually set on a fixed bracket, and the input end of the angle sensor is directly connected to the shaft of the pedal arm, that is, the connecting part in this embodiment, for real-time measurement of the swing angle of the pedal arm. However, since new energy vehicles will generate large axial vibrations during use, this axial vibration will be transmitted to the input end of the angle sensor through the pedal arm, causing the input end of the angle sensor and even the angle sensor as a whole to be affected by the axial vibration for a long time. The angle sensor has a large axial shake, which in turn causes the magnet inside the angle sensor to be dislocated or shifted, thereby causing the angle sensor to transmit inaccurate signals and signal disorder.

[0077] In this embodiment, only the outer shell of the angle sensor 22 is connected to the fixing bracket 3 , and the input end of the angle sensor 22 is movably connected to the pedal arm 1 via the shift fork 24 and the pin body 23 .

[0078] When the driver steps on the pedal and the pedal arm 1 swings, the pedal arm 1 drives the pin body 23 to swing, and the pin body 23 drives the fork body of the shift fork 24 to swing, so that the shaft body of the shift fork 24 drives the input end of the angle sensor 22 to rotate, and then the angle sensor 22 receives the rotation angle, and the angle sensor 22 converts the rotation angle into a signal output.

[0079] In the present embodiment, the input end of the angle sensor 22 is not directly connected to the shaft of the pedal arm, that is, the connecting portion in the present embodiment, but is indirectly connected to the shaft of the pedal arm through the provided shift fork 24, and the fork body of the shift fork and the pin body 23 are fitted with a movable gap. During the axial vibration of the pedal arm, even if the pedal arm drives the pin body 23 to vibrate axially, due to the gap between the fork body of the shift fork and the pin body 23, that is, the pin body 23 and the shift fork are only partially in contact or not in contact, the energy of the axial vibration of the pin body 23 can only be partially transmitted to the shift fork, or cannot be transmitted to the shift fork. Compared with the prior art, the axial vibration energy directly transmitted by the pedal arm to the input end of the angle sensor is greatly reduced, resulting in a small axial shaking amount of the angle sensor, and further avoiding the dislocation or displacement of the magnet inside the angle sensor due to vibration. The output signal of the angle sensor in the present embodiment is more relatively accurate and stable.

[0080] Further preferably, a plastic bushing 27 is provided on the fork body of the shift fork 24. The material of the plastic bushing can be plastic commonly used in the automotive field; there is no limitation here. The fork body of the shift fork 24 is rotatably in contact with the surface of the pin body 23 through the plastic bushing 27. On the one hand, the setting of the plastic bushing 27 can effectively reduce the wear caused by the relative rotation of the fork body and the pin body 23. On the other hand, the plastic bushing can absorb a part of the vibration energy transmitted from the pedal arm 1 and the pin body 23 to the shift fork 24.

[0081] The angle sensor is also connected to the controller for communication. The angle sensor converts the angle signal into a voltage signal and outputs it to the controller. In this embodiment, since the angle sensor is not coaxial with the connecting part 2 of the pedal arm, it is necessary to program the received output signal of the angle sensor in the controller to obtain the numerical value corresponding to the actual swing angle of the pedal arm.

[0082] Furthermore, in summary, the new energy brake pedal assembly of this embodiment includes two sets of voltage signals output due to the swing of the pedal arm, the voltage signal converted by the elastic contact type sliding rheostat 6, and the voltage signal converted by the angle sensor. These two sets of voltage signals will eventually be transmitted to the VCU (central control unit).

[0083] In the new energy vehicles of the prior art, there is only one device for measuring the swing of the pedal arm, that is, the angle sensor measures the swing of the pedal arm; and as can be seen from the above content, the angle sensor is susceptible to interference. Once the angle sensor is interfered with, the output signal of the angle sensor will be disordered. The disordered output signal has high and low values. Some output signals with high values ​​are transmitted to the VCU, which will cause the VCU to misjudge and think that the driver has stepped on the brakes at this time. If the driver steps on the accelerator at this time, the vehicle will alarm, which becomes a false alarm of the vehicle in the prior art. If there are no other treatment measures, the vehicle can only break down and look for a rescue trailer, affecting travel and personal safety.

[0084] In the present embodiment, when the driver steps on the pedal, two sets of voltage output signals are generated, namely, the voltage signal converted by the elastic contact type sliding rheostat 6 and the voltage signal converted by the angle sensor. When the VCU makes a judgment, the voltage signal converted by the elastic contact type sliding rheostat 6 is used as the main judgment standard, and the voltage signal converted by the angle sensor is used as the auxiliary judgment standard. The two sets of signals are checked against each other. If the voltage signal converted by the angle sensor is abnormally disordered, and the voltage signal converted by the elastic contact type sliding rheostat 6 is normal, the voltage signal converted by the angle sensor is manually turned off, and the voltage signal converted by the elastic contact type sliding rheostat 6 is used as the standard to perform subsequent energy recovery and electric braking actions, and vice versa. Through the above operations, the common problem of vehicle breakdown caused by sensor failure on the pedal can be solved without reducing the cruising range.

[0085] Example 2

[0086] This embodiment proposes a new energy vehicle, which includes the new energy brake pedal assembly mentioned in Embodiment 1.

[0087] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A new energy brake pedal assembly, characterized in that: It comprises a pedal arm (1), wherein two ends of the pedal arm (1) along the extension direction are respectively a first end and a second end, and a connecting portion (2) is provided between the first end and the second end; It also includes a fixed bracket (3), and the connecting part (2) is rotatably connected to the fixed bracket (3); It also includes a movable column (4), the second end of which is used to drive the movable column (4) to move along a first direction, wherein the first direction forms an acute angle with the extension direction of the pedal arm (1); It also includes a limit plate (5), which is connected to the movable column (4); It also comprises an elastic contact type sliding rheostat (6), which is located between the second end and the limit plate (5) along the first direction; the shell of the elastic contact type sliding rheostat (6) is connected to the fixed bracket (3), and the elastic contact of the elastic contact type sliding rheostat (6) abuts against one side of the limit plate (5); It also includes a circuit board (7), and the elastic contact type sliding resistor (6) is electrically connected to the circuit board (7).

2. The new energy brake pedal assembly according to claim 1 is characterized in that: The fixed bracket (3) is provided with a first limiting surface (8), and the first limiting surface (8) is parallel to the plate surface of the limiting plate (5); the limiting plate (5) is located between the contact of the elastic contact type sliding rheostat (6) and the first limiting surface (8); It also includes a first spring (9), the axis of which is arranged along a first straight line; and along the first direction, the first spring (9) is located between the limiting plate (5) and the first limiting surface (8).

3. The new energy brake pedal assembly according to claim 2 is characterized in that: It also includes a guide portion (10), the guide portion (10) is connected to the fixed bracket (3), the guide portion (10) is provided with a guide channel (11), and the guide channel (11) extends along a first direction; The movable column (4) is inserted into the guide channel (11), and the outer surface of the movable column (4) is in sliding contact with the inner wall of the guide channel (11).

4. The new energy brake pedal assembly according to claim 3 is characterized in that: A first receiving groove (12) is provided on one side of the movable column (4) facing the second end, and the first receiving groove (12) is formed by being recessed along a first direction; The second end is rotatably connected to a first abutting portion (13), one end of the first abutting portion (13) is inserted into the first containing groove (12) along a first direction and abuts against a groove bottom wall of the first containing groove (12).

5. The new energy brake pedal assembly according to claim 4 is characterized in that: Along the radial direction of the movable column (4), there is a gap between the outer surface of the first abutting portion (13) and the groove side wall of the first accommodating groove (12), and the gap gradually decreases along the first direction; Furthermore, one end of the first abutting portion (13) inserted into the first receiving groove (12) has an arc-shaped outer surface, and the bottom wall of the first receiving groove (12) is also an arc-shaped bottom wall.

6. The new energy brake pedal assembly according to claim 2, characterized in that: The first spring (9) is a conical spring.

7. The new energy brake pedal assembly according to any one of claims 1 to 6, characterized in that: It also includes a second abutting portion (14) and a push rod (15), one end of the second abutting portion (14) abuts against a side of the movable column (4) away from the second end; the other end of the second abutting portion (14) is used to drive the push rod (15) to move along the first direction; It also includes a double-chamber brake master valve (16), the shell of the double-chamber brake master valve (16) is connected to the fixed bracket (3) along the second direction, and the piston rod of the double-chamber brake master valve (16) also extends along the second direction; wherein the second direction is perpendicular to the first direction; It also includes a right-angle swing arm (17), which is located between the top rod (15) and the piston rod of the double-chamber brake master valve (16); the right-angle swing arm (17) includes a first swing arm (18) and a second swing arm (19) which are connected and form a right angle; The second swing arm (19) is provided with a support hole (26), and further comprises a support rod (25), the middle portion of the support rod (25) passes through the support hole (26), both ends of the support rod (25) are fixed to the fixed bracket (3), and the hole wall of the support hole (26) can rotate relative to the outer surface of the support rod (25); One end of the push rod (15) is in contact with the first swing arm (18), and the piston rod of the double-chamber brake master valve (16) is hinged to the connection between the first swing arm (18) and the second swing arm (19).

8. The new energy brake pedal assembly according to claim 7, characterized in that: It also includes a positioning block (20), which is connected to the first swing arm (18); It also includes a torsion spring (21), the axis of which is perpendicular to the extension direction of the first swing arm (18) and the second swing arm (19), one end of the torsion spring (21) abuts against the positioning block (20), and the other end abuts against the fixed bracket (3).

9. The new energy brake pedal assembly according to claim 8, characterized in that: It also includes an angle sensor (22), wherein the housing of the angle sensor (22) is connected to the fixing bracket (3); It also includes a pin body (23), the pin body (23) is connected to the pedal arm (1), and the position where the pin body (23) is connected to the pedal arm (1) is located between the first end and the second end of the pedal arm (1); It also includes a shift fork (24), the shaft of which is connected to the input end of the angle sensor (22), the fork body of the shift fork (24) can be movably clamped on the outer surface of the pin body (23), and the fork body of the shift fork (24) and the outer surface of the pin body (23) are clearance-matched.

10. A new energy vehicle, characterized in that: Comprising the new energy brake pedal assembly as described in any one of claims 1-9.

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