Electronic clutch pedal of vehicle

Abstract

A vehicle electronic clutch pedal comprises a shell, a pedal assembly, a rotating shaft unit and an angle sensor, the shell comprises an upper cover and a bottom plate, and a containing groove and an inner hole are formed in the side face of the upper cover; the rotating shaft unit comprises a rotating shaft, a bearing and a torsional spring, the bearing is arranged in the upper cover, and a linear flat position is arranged in the middle of the rotating shaft and is in interference fit and tight connection with a linear through hole of the bearing; the torsional spring is mounted in a containing groove in the side face of the upper cover, one end of the torsional spring penetrates through an inner hole of the upper cover to be fixed to the bearing, and the torsional spring twists under the action of the rotating shaft to store force so that the pedal can return to the original position; one end of the rotating shaft is connected with the pedal assembly and can rotate under the driving action of the pedal assembly, and the other end of the rotating shaft is connected with a magnetic steel seat on the angle sensor and can drive magnetic steel in the angle sensor to rotate; and the angle sensor converts a rotation angle signal of the magnetic steel into an electric signal and outputs the electric signal.

Description

Technical Field

[0001] The invention relates to the field of vehicle parts, and in particular to a vehicle electronic clutch pedal. Background Art

[0002] Mechanical vehicle clutch pedals have problems such as inaccurate signal conversion and uneven return. The new electronic clutch pedal can solve these problems well. The electronic clutch pedal can convert the mechanical signal acting on the pedal into an angle signal through the shaft unit. The angle sensor converts the angle signal generated by the rotation of the magnetic steel into an electrical signal through Hall element detection. There is a good linear relationship between the electrical signal and the angle signal, thereby accurately realizing the control of the vehicle clutch system.

[0003] In the prior art, most rotating shafts are of segmented connection structure, which are at risk of breaking when subjected to large torque. Most of the force-bearing parts connected to the rotating shaft are circular hole-shaped. After being used for a long time, the circular hole-shaped connecting parts are prone to relative sliding when subjected to large loads or torques, affecting the operating accuracy and reliability of the clutch pedal, resulting in the clutch not being able to fully engage or separate completely, affecting the vehicle's driving performance and safety.

[0004] In addition, the application number is 201310707450X, which discloses an electronic clutch pedal. The tension spring of the pedal arm of this structure is external, which poses a safety hazard when in use and affects the appearance. There is also a risk of corrosion after long-term use, and the reliability is not high. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention proposes a vehicle electronic clutch pedal, which can accurately convert the mechanical signal of the pedal into an electrical signal, thereby improving the accuracy and comfort of vehicle clutch control, and has high reliability and good appearance.

[0006] Specifically, a vehicle electronic clutch pedal includes a housing, a pedal assembly, a rotating shaft unit, and an angle sensor, wherein the housing includes an upper cover and a bottom plate, and a side surface of the upper cover is provided with a receiving groove and an inner hole;

[0007] The rotating shaft unit includes a rotating shaft, a bearing, and a torsion spring. The bearing is placed in the upper cover. The middle of the rotating shaft has a straight-line flat portion, which is tightly connected with the straight-line through hole of the bearing by interference fit.

[0008] The torsion spring is installed in the accommodating groove on the side of the upper cover, and one end passes through the inner hole of the upper cover and is fixed to the bearing. The torsion spring is twisted and stored under the action of the rotating shaft to make the pedal return to its original position;

[0009] One end of the rotating shaft is connected to the pedal assembly and can rotate under the driving action of the pedal assembly. The bearing tightly connected to the straight-line flat position in the middle of the rotating shaft rotates, and the torsion spring twists to store force; the other end of the rotating shaft is connected to the magnetic steel seat on the angle sensor and can drive the magnetic steel in the angle sensor to rotate; the Hall element of the angle sensor converts the angle signal of the magnetic steel rotation into an electrical signal output.

[0010] Furthermore, the rotating shaft is an integrated step structure to ensure the high precision and high strength requirements of the product, and has a double-sided flat position in the middle to increase the force-bearing area and ensure product reliability.

[0011] Furthermore, the pedal assembly comprises a pedal, a pedal arm connected to the pedal, and a pedal arm shaft sleeve connected to the pedal arm. One end of the rotating shaft is cylindrical and rotatably mounted in the pedal arm shaft sleeve.

[0012] Furthermore, a slot matching the magnetic steel seat of the angle sensor is provided at the other end of the rotating shaft.

[0013] Furthermore, the upper cover has a through hole matching the shaft, and the outer edge of the through hole is provided with a receiving groove. The shaft passes through the through hole of the upper cover in turn and is connected to the bearing, and the end of the shaft is connected to the magnetic steel seat of the angle sensor.

[0014] Preferably, a shaft sleeve is provided at the connection between the rotating shaft and the through hole of the upper cover, and lubricating oil is applied on the shaft sleeve to make the rotating shaft rotate more smoothly.

[0015] Preferably, a pressure plate is provided on the outer side of the upper cover to fix the torsion spring inside the side of the upper cover. The angle sensor is fixed on the outer side of the pressure plate.

[0016] The utility model has at least the following beneficial effects:

[0017] The vehicle electronic clutch pedal shaft of the present invention is made of an integrated rigid material and has a step structure. The middle part of the shaft has a double-sided straight-line flat portion, which is tightly installed with an interference fit with the straight-line through hole of the bearing. It can withstand a large load and torque, and the shaft and the bearing will not slide relative to each other, thereby ensuring the reliability of the shaft during rotation, with high transmission accuracy and improved driving safety.

[0018] Through the cooperation of the rotating shaft unit and the angle sensor, the mechanical signal of the pedal can be accurately converted into an electrical signal. There is a good linear relationship between the angle signal and the electrical signal, which makes the separation and combination of the clutch and the engine flywheel smoother, ensuring smooth starting and gear shifting of the car.

[0019] The torsion spring is arranged in the side of the shell, so that the pedal returns to its original position quickly after being released. The overall structure is simple and compact, easy to install, durable and has industrial design aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , is a schematic diagram of the overall structure of the electronic clutch pedal;

[0021] Figure 2 , is an exploded schematic diagram of the overall structure of an electronic clutch pedal according to an embodiment;

[0022] Figure 3 , is a schematic diagram of the upper cover and torsion spring structure of an electronic clutch pedal in one embodiment;

[0023] Figure 4 , is a schematic diagram of the structure of the electronic clutch pedal shaft according to an embodiment.

[0024] Figure numerals: 11 upper cover, 12 bottom plate, 22 pedal, 23 pedal arm, 24 pedal arm bushing, 36 rotating shaft, 361 double-sided straight flat position, 362 slot, 37 bearing, 39 bushing, 4 torsion spring, 5 angle sensor, 8 nut. DETAILED DESCRIPTION

[0025] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The following embodiments are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application. In the following description, the same symbols are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0026] In the description of the present application, it should be understood that the terms "left", "right", "inside" and "outside" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships conventionally placed when the products of the present application are used, or are the orientations or positional relationships conventionally understood by those skilled in the art. These 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.

[0027] The vehicle electronic clutch pedal includes a housing, a pedal assembly, a shaft unit, and an angle sensor, wherein the housing serves to fix and support; the shaft unit is connected to the pedal assembly and can rotate when the pedal assembly is subjected to force, so as to convert the mechanical signal of the pedal into an angle signal; the shaft unit is also connected to the angle sensor and can drive the magnet in the angle sensor to rotate, and the angle sensor converts the angle signal into an electrical signal for output; the torsion spring twists and accumulates force when the pedal assembly is subjected to force, so that when the force on the pedal disappears, the pedal returns to its original position.

[0028] Combination Figure 1-3The shell includes an upper cover 11 and a bottom plate 12. The upper cover is fixed to the bottom plate. The bottom plate is used to fix the electronic clutch pedal on the vehicle. An annular through hole is provided on the side of the upper cover 11. A receiving groove is provided on the outer edge of the through hole. An inner hole is provided in the receiving groove. The receiving groove is annular and matches the size of the torsion spring. The torsion spring 4 is installed in the receiving groove. One end of the torsion spring passes through the inner hole of the upper cover and is fixed to the bearing 37, and the other end is inserted into the slot on the side of the upper cover.

[0029] Combination Figure 2 and 4 , the shaft unit includes a shaft 36, a bearing 37, and a torsion spring 4. The shaft is an integrated step structure to ensure high precision and high strength requirements, and has a double-sided flat position 361 in the middle, as shown in the attached Figure 4 As shown, the force-bearing area is increased to ensure product reliability; the bearing 37 is placed in the housing, the bottom is arc-shaped, and the side has a straight through hole, and the bearing rotates with the shaft in the housing; the straight flat position in the middle of the shaft is tightly connected with the straight through hole of the bearing by interference fit, and the step structure further prevents the bearing from moving left and right, thereby achieving a firm connection between the parts, being able to withstand large loads and torques, and the shaft and the bearing are not prone to relative sliding.

[0030] One end of the rotating shaft is connected to the pedal assembly and can rotate under the driving action of the pedal assembly. The other end of the rotating shaft passes through the through holes of the upper cover in turn and is tightly connected with the straight-line through hole of the bearing 37 by interference fit. When the rotating shaft rotates, the bearing connected to it rotates, the torsion spring twists and stores force, and the end of the rotating shaft is connected to the magnetic steel seat on the angle sensor, driving the magnetic steel in the angle sensor to rotate.

[0031] In one embodiment, the pedal assembly includes a pedal 22, a pedal arm 23 connected to the pedal, and a pedal arm bushing 24 connected to the pedal arm.

[0032] In one embodiment, one end of the rotating shaft 36 is cylindrical and rotatably mounted in the pedal arm sleeve, and the rotating shaft and the rotating shaft sleeve are fixed by a nut 8. The other end of the rotating shaft is provided with a slot 362 matching the magnetic steel seat of the angle sensor 5, and the magnetic steel of the angle sensor 5 is driven to rotate by engaging with the magnetic steel seat of the angle sensor through the slot, and the Hall element of the angle sensor outputs the vertical magnetic field strength generated by the rotation of the magnetic steel as an electrical signal, thereby converting the mechanical signal of the pedal into an electrical signal output.

[0033] In one embodiment, at the connection between the rotating shaft and the through hole of the upper cover, large and small shaft sleeves 39 are provided on the left and right sides of the upper cover, and lubricating oil is applied on the shaft sleeves to make the rotating shaft rotate more smoothly.

[0034] In one embodiment, a pressure plate is provided on the outer side of the upper cover, and the torsion spring is fixed inside the side of the upper cover, so that the pedal structure design is simpler and more compact, the torsion spring is less affected by external environmental factors, has high reliability, and is easy to install. An angle sensor can be fixed outside the pressure plate on one side of the upper cover.

[0035] The angle sensor includes a magnetic steel seat and a Hall element. One end of the magnetic steel seat is connected to the rotating shaft. Preferably, the magnetic steel seat is in a flat shape and embedded in a slot at the end of the rotating shaft. The other end of the magnetic steel seat is connected to the magnet. A certain gap is maintained between the magnet and the Hall element. The Hall element is fixed together with the circuit board inside the angle sensor close to the magnet. The Hall element is used to sense the change in magnetic field strength caused by the rotation of the magnet and generate an electrical signal output. The angle sensor in the present application adopts a non-contact design to increase the service life of the sensor.

[0036] In actual application, when the driver steps on the pedal, the pedal assembly drives the shaft unit to rotate. Through the cooperation of the shaft unit and the angle sensor, the mechanical signal of the pedal is accurately converted into an electrical signal. There is a good linear relationship between the angle signal and the electrical signal. The controller controls the opening of the solenoid valve through the size of the voltage signal, thereby accurately controlling the clutch, making the separation and combination of the clutch and the engine flywheel smoother, ensuring the smooth start of the car and smooth gear shifting. When the driver releases the pedal, the accumulated force of the torsion spring returns the pedal to its original position.

Claims

1. A vehicle electronic clutch pedal, comprising a housing, a pedal assembly, a shaft unit, and an angle sensor, characterized in that: The housing comprises an upper cover and a bottom plate, and a accommodating groove and an inner hole are provided on the side of the upper cover; The rotating shaft unit includes a rotating shaft, a bearing, and a torsion spring. The bearing is placed in the upper cover. The middle of the rotating shaft has a straight-line flat portion, which is tightly connected with the straight-line through hole of the bearing by interference fit. The torsion spring is installed in the accommodating groove on the side of the upper cover, and one end passes through the inner hole of the upper cover and is fixed to the bearing. The torsion spring is twisted and stored under the action of the rotating shaft to make the pedal return to its original position; One end of the rotating shaft is connected to the pedal assembly and can rotate under the driving action of the pedal assembly. The other end of the rotating shaft is connected to the magnetic steel seat on the angle sensor and can drive the magnetic steel in the angle sensor to rotate; the angle sensor converts the angle signal of the magnetic steel rotation into an electrical signal output.

2. The vehicle electronic clutch pedal according to claim 1, characterized in that: The rotating shaft is an integrated step structure, and has a double-sided straight-line flat position in the middle.

3. The vehicle electronic clutch pedal according to claim 1, characterized in that: The pedal assembly comprises a pedal, a pedal arm connected to the pedal, and a pedal arm shaft sleeve connected to the pedal arm.

4. The vehicle electronic clutch pedal according to claim 1 or 3, characterized in that: One end of the rotating shaft is cylindrical and rotatably mounted in the pedal arm shaft sleeve.

5. The vehicle electronic clutch pedal according to claim 1, characterized in that: The other end of the rotating shaft is provided with a slot matching the magnetic steel seat of the angle sensor.

6. The vehicle electronic clutch pedal according to claim 1, characterized in that: The side surface of the upper cover is provided with a through hole matching the rotating shaft.

7. The vehicle electronic clutch pedal according to claim 6, characterized in that: A shaft sleeve is provided at the connection between the rotating shaft and the through hole of the upper cover, so that the rotating shaft rotates more smoothly.

8. The vehicle electronic clutch pedal according to claim 1, characterized in that: A pressing plate is arranged on the outer side of the upper cover to fix the torsion spring inside the side surface of the upper cover.

9. The vehicle electronic clutch pedal according to claim 8, characterized in that: The angle sensor is fixed on the outer side of the pressing plate.

10. The vehicle electronic clutch pedal according to claim 1, characterized in that: The upper cover is fixed on a bottom plate, and the bottom plate is fixed on a vehicle.

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