Suspended electronic throttle and tractor

Abstract

A suspension electronic accelerator comprises a shell, a rotating shaft assembly, a reset piece, a supporting sleeve, a sensor and a pedal, the rotating shaft assembly comprises a rocker, a shaft sleeve and a connecting pin, the rocker penetrates through a through hole in the middle of the shaft sleeve, and the rocker and the shaft sleeve are fixedly connected in a crossed mode through the connecting pin and installed in a curved surface installation groove of an installation base; one end, positioned above the curved surface mounting groove surface, of the shaft sleeve extends outwards to form a swing arm to limit and support the rotation of the rotating shaft assembly; one end of the reset piece mounted on the support sleeve is fixed on the rotating shaft assembly, and the other end is fixed on the mounting seat; one end of the rocker is connected with the sensor, and the other end of the rocker is connected with the pedal. A tight and stable structure is formed between the rotating shaft assemblies and between the rotating shaft assemblies and the reset piece, in the rotating process of the rotating shaft, the problems that in the prior art, looseness and breakage are prone to occurring between an electronic throttle connecting plate and a shaft are effectively solved, and sensitive and accurate control over the opening degree of a throttle valve is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a suspended electronic throttle and a tractor with special structural design. Background Art

[0002] The traditional throttle adopts a mechanical structure, connecting the accelerator pedal and the throttle valve by a cable. With the development of automobile technology, electronic throttles have gradually become popular, which rely on sensors and electronic control units (ECUs) to control the throttle opening. When the driver steps on the pedal, the sensor transmits a signal to the ECU, which calculates the optimal throttle opening based on parameters such as engine speed and vehicle speed, and drives the motor to adjust the throttle valve, or controls the speed and torque of the motor by adjusting the input current and voltage of the motor. In some vehicles with special requirements for installation space, a hanging throttle can be used. Unlike pedals with a fulcrum on the floor, a hanging throttle can be installed from above and hung downward, which can effectively save space.

[0003] In the prior art, some electronic accelerator pedals are disclosed. For example, the patent with publication number CN 220009464 U discloses an electronic accelerator pedal, which connects the pedal and the connecting plate through the two ends of the connecting rod. The connecting plate is rotatably mounted on the shaft. Reset springs are arranged on both sides of the connecting plate. By applying force to the pedal, the connecting plate and the shaft rotate at the same time, thereby rotating the magnetic steel. However, this connection method has safety hazards. The rotating shaft becomes the force fulcrum of the connecting plate. The connecting plate and the shaft are prone to loosening or even breaking after being subjected to force for a long time, which affects the accuracy of the sensor and cannot meet the requirements of long-term stable operation of the vehicle. Summary of the invention

[0004] The present invention aims to provide a suspended electronic throttle to solve the technical problems that the existing electronic throttle pedal connection structure is unreliable, prone to safety problems and cannot adapt to special installation space requirements.

[0005] Specifically, a suspended electronic throttle comprises: a housing, a rotating shaft assembly, a reset member, a support sleeve, a sensor, and a pedal, wherein the housing comprises a mounting seat and an upper cover, and a curved mounting groove is provided in the mounting seat; The shaft assembly includes a rocker, a sleeve, and a connecting pin. One end of the rocker is provided with a radial first fixing hole, the middle of the sleeve is provided with a through hole matching the diameter of the rocker, and the side of the sleeve is provided with a third fixing hole having the same inner diameter as the first fixing hole. The rocker passes through the through hole in the middle of the sleeve, and the connecting pin passes through the first and third fixing holes that are axially connected to cross and fix the rocker and the sleeve, and is installed in the curved surface installation groove; one end of the sleeve located above the curved surface installation groove surface extends outward to form a swing arm, providing limit and support for the rotation of the shaft assembly; The support sleeve is sleeved on the rocker and installed on the side of the shaft sleeve in the curved mounting groove; the reset member is installed on the support sleeve with one end fixed to the rotating shaft assembly and the other end fixed to the mounting seat; The rocker passes through the mounting hole on the side of the curved mounting groove, one end of which is connected to the sensor outside the mounting seat, and the other end is connected to the pedal; the upper cover is fixed to the mounting seat to seal the components inside the mounting seat.

[0006] In a first improvement, a rubber block is provided on the surface where the swing arm contacts the mounting seat to cushion the impact force during the resetting process.

[0007] In one improvement, the through hole in the middle of the sleeve extends along the length direction of the rocker to form a cylindrical shape and is inscribed in the support sleeve, so that the connection between the rotating shaft assembly and the support sleeve is tighter.

[0008] Furthermore, in order to make the axial positioning between the rotating shaft assembly and the torsion spring more precise, a retaining spring can be added between the sleeve and the mounting seat to axially fix the torsion spring support sleeve in the curved mounting groove. This can reduce shaking and allow the torsion spring to deform evenly when subjected to force, thereby increasing the user experience.

[0009] Preferably, the support sleeve is made of engineering plastic material with a smooth surface, such as POM material, which has good lubricity and effectively reduces the friction between the torsion spring and the contact surface of the rocker when the torsion spring moves relative to each other, making the torsion spring move more smoothly and reducing vibration and impact.

[0010] According to a first improvement, the sensor is an angle sensor.

[0011] In a first improvement, the connecting pin is tightly fixed to the first and third fixing holes which are axially connected by interference fit, or the fixing holes are of internal thread structure and the connecting pin is a bolt.

[0012] Preferably, the reset member is a high-strength metal torsion spring, which has strong fatigue resistance and good toughness, can withstand large torque and is not easy to break. One end of the torsion spring can be fixed to the shaft sleeve or the connecting pin, and the other end is fixed to the mounting seat.

[0013] Preferably, the shaft assembly is made of metal or alloy, taking into account both durability and lightness.

[0014] Preferably, small shaft sleeves are further arranged in the mounting holes on both sides of the mounting seat. The small shaft sleeves are made of engineering plastics and have a smooth surface, which can reduce the friction coefficient between the rocker and the mounting seat.

[0015] Furthermore, the joystick is entirely in the same plane, or can be customized according to customer requirements, and the angle of the joystick meets ergonomic and mechanical requirements.

[0016] Furthermore, fixing columns are provided on the edge of the mounting seat for fixed connection with the vehicle, and the number of the fixing columns meets the stability requirements.

[0017] Furthermore, the pedal surface is provided with textures to increase the friction between the pedal and the sole, effectively preventing slipping in wet conditions and ensuring safety.

[0018] The present invention also provides a tractor, comprising the suspended electronic throttle described in any one of the above items.

[0019] The electronic throttle suspension of the present invention has at least the following beneficial effects: The structure is stable and reliable: the rocker of the shaft assembly is cross-fixed with the shaft sleeve, and the reset member is connected to the shaft assembly. The reset member is a metal torsion spring with high strength and good toughness. A tight and stable structure is formed between the shaft assemblies and the reset member. During the rotation of the shaft, the loosening and breakage problems that are prone to occur between the electronic throttle connecting plate and the shaft in the prior art are effectively avoided, ensuring sensitive and precise control of the throttle opening.

[0020] Uniform force and strong user experience: the shaft assembly and torsion spring support sleeve are axially fixed in the curved mounting groove. The support sleeve workpiece has a smooth surface and high strength. When the torsion spring is twisted, the torque can be evenly transferred to the shaft assembly. When returning, the vibration and impact are small, and the user has a strong experience when stepping on the pedal.

[0021] The structural design meets the requirements of ergonomics and mechanics: the middle part of the rocker is bent at a certain angle, which optimizes the force transmission path. The length of the rocker and the bending angle of the middle part can be customized according to customer needs, fully considering the requirements of ergonomics and mechanics. When the driver is pedaling, it can effectively reduce the fatigue of long-term driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 , is a schematic diagram of the overall structure of a throttle suspension surface; Figure 2 ,for Figure 1 Schematic diagram of partial enlarged structure; Figure 3 , is a cross-sectional view of the local structure of the throttle suspension; Figure 4 ,for Figure 1 Schematic diagram of the overall structure on the back; Figure numerals: 1-rocker, 103-small bushing, 2-mounting seat, 28-upper cover, 3-reset member, 39-support sleeve, 4-connecting pin, 5-sleeve, 501-swing arm, 6-sensor, 7-pedal, 201-fixing column. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In addition, in the description of the present invention, it should be understood that the directions or positional relationships indicated by "inside" and "outside" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In the present invention, "connected" and "fixed" should be understood in a broad sense.

[0025] Combination Figure 1-3 The shell includes a mounting seat 2 and an upper cover 28. A curved mounting groove is arranged in the mounting seat for fixing the shaft assembly, the reset member and the support sleeve. A mounting hole for fixing the rocker is arranged on the axial side of the curved mounting groove. The mounting seat is made of metal or alloy as a whole, for example, an aluminum alloy with corrosion resistance after the surface is passivated, which takes into account durability and lightness.

[0026] In order to increase the contact area between the rocker and the mounting seat and enhance stability, the hole position on the mounting seat can be set to a cylindrical shape. Small shaft sleeves 103 are also set in the mounting holes on both sides of the mounting seat, and the small shaft sleeves are fixed in the mounting holes. The small shaft sleeves are made of engineering plastics and have a smooth contact surface, which can reduce the friction coefficient between the rocker and the mounting seat.

[0027] The shaft assembly includes a rocker 1, a sleeve 5, and a connecting pin 4. The shaft assembly is made of metal or alloy, and the surface is treated to be resistant to acid and alkali corrosion, and is durable and lightweight. A radial first fixing hole 107 is provided at one end of the rocker close to the sensor 6, and the size of the through hole matches the connecting pin. A third fixing hole with the same inner diameter as the first fixing hole is provided on the side of the sleeve. The connecting pin passes through the first and third fixing holes that are axially connected to cross-fix the rocker and the sleeve, and is installed in the curved surface mounting groove of the mounting seat.

[0028] The connecting pin is tightly connected and fixed with the first and third fixing holes which are axially connected by interference fit. The first and third fixing holes can also be set as internal thread structures, and the connecting pin is a bolt.

[0029] A through hole is provided in the middle of the shaft sleeve for the rocker to pass through, the hole diameter matches the diameter of the rocker, the rocker passes through the through hole in the middle of the shaft sleeve, and the shaft sleeve and the rocker are fixedly connected by a connecting pin.

[0030] The part of the sleeve 5 located in the curved mounting groove is an arc-shaped structure, which ensures that the sleeve rotates smoothly with the rocker and does not interfere with the curved mounting groove. The end of the sleeve located above the curved mounting groove surface extends outward to form a swing arm 501. Figure 2 The swing arm moves with the shaft assembly from the starting position A to the limit position B, and the two ends of the swing arm provide limit for the movement of the shaft assembly and provide support for the shaft assembly to return to the initial position. The end surface 501 of the sleeve that abuts against the mounting seat during the reset process of the shaft sleeve rotating with the rocker is provided with a rubber block to buffer the impact force during the reset process.

[0031] like Figure 3 The reset member 3 is a torsion spring, which is installed on the support sleeve 39, one end of which is fixed on the shaft sleeve of the rotating shaft assembly, and the other end is fixed on the mounting seat. The support sleeve 39 is arranged on the side of the shaft sleeve in the curved mounting groove, and the support sleeve is cylindrically sleeved on the rocker to provide support for the installation of the reset member 3, so that the torsion spring can evenly transfer the torque to the rotating shaft assembly when twisting, reducing vibration and impact.

[0032] The support sleeve is made of engineering plastic material with a smooth surface, such as POM material, which has good lubricity and can effectively reduce the friction between the torsion spring and the rocker contact surface during relative movement, making the torsion spring move more smoothly and reducing vibration and impact.

[0033] The reset part is a high-strength metal torsion spring with strong fatigue resistance and good toughness. It can withstand large torque and is not easy to break. One end of the torsion spring can be fixed on the shaft sleeve, and the other end is fixed on the mounting seat. When the pedal is subjected to force, the shaft assembly rotates in the curved mounting groove, and one end of the torsion spring rotates with the shaft sleeve to store force. The torsion spring has a certain strength and toughness, and is not easy to shake or break.

[0034] In one embodiment, the through hole in the middle of the sleeve extends along the length direction of the rocker to form a cylindrical shape and is inscribed in the support sleeve, so that the connection between the shaft assembly and the support sleeve is tighter and the positioning of the sleeve and the support sleeve in the curved groove is more precise.

[0035] In one embodiment, a retaining spring is provided between the shaft sleeve and the mounting seat to axially fix the shaft assembly and the support sleeve to the curved mounting groove, thereby reducing shaking and allowing the torsion spring to deform evenly when subjected to force, thereby increasing user experience.

[0036] In the actual assembly process, the rocker passes through the mounting hole on the side of the curved mounting groove, one end is connected to the sensor outside the mounting seat, and the other end is connected to the pedal. In order to make the axial positioning between the shaft assembly and the torsion spring more accurate, a retaining ring can be added between the sleeve and the mounting seat to axially fix the torsion spring support sleeve in the curved mounting groove. The upper cover is fixed to the mounting seat to seal the components in the curved mounting groove.

[0037] like Figure 4The two ends of the rocker are straight, forming the core transmission component of the throttle and the pedal component respectively, and the middle part is bent at a certain angle, which optimizes the force transmission path. The length of the rocker and the bending angle of the middle part can be customized according to customer needs, fully considering ergonomics and mechanical requirements, which can effectively reduce the driver's fatigue during long-term driving and pedaling.

[0038] In one embodiment, the sensor 7 is an angle sensor. The end of the rocker arm is coupled to the angle sensor through a spline structure. A force is applied to the pedal to rotate the shaft assembly, which drives the magnetic steel seat to rotate, and converts the displacement signal of the pedal into an electrical signal and outputs it to the ECU. The ECU calculates the optimal throttle opening based on parameters such as engine speed and vehicle speed, and drives the motor to adjust the throttle.

[0039] The mounting base is provided with fixing columns on the edge for fixing connection with the vehicle. There are at least three fixing columns, two of which are located at the top of the mounting base and one is located at the bottom of the mounting base. The mounting base is fastened to the vehicle by nuts. On some vehicles with special requirements for installation space, the mounting base can be installed in a hanging manner, which can effectively save space.

[0040] The pedal surface is provided with textures, which can increase the friction between the pedal and the sole, effectively preventing slipping in wet conditions and ensuring safety.

[0041] The electronic accelerator pedal of the present invention is easy to operate, simple and beautiful, occupies little space, and the mounting base can be suspended and installed, thereby solving the problems of limited installation space of tractor pedals, pedal safety and reliability, etc. In addition, the present invention also provides a tractor, comprising any of the electronic accelerator pedals described above.

[0042] In the above technical solution, a tight and stable structure is formed between the rotating shaft components and between the rotating shaft components and the torsion spring of the reset component. When the pedal is subjected to force, the rotating shaft components are linked as a whole, and the torsion spring deforms and stores force. The torsion spring has certain strength and toughness, which effectively avoids the loosening and breakage problems that are prone to occur between the electronic throttle connecting plate and the shaft in the prior art. During long-term operation of the vehicle and frequent throttle operations, the accurate output of the sensor signal can always be ensured.

Claims

1. A suspension electronic throttle comprising: The housing, the shaft assembly, the reset member, the support sleeve, the sensor, and the pedal are characterized in that the housing comprises a mounting seat and an upper cover, and the mounting seat is provided with a curved mounting groove; The shaft assembly includes a rocker, a sleeve, and a connecting pin. One end of the rocker is provided with a radial first fixing hole, the middle of the sleeve is provided with a through hole matching the diameter of the rocker, and the side of the sleeve is provided with a third fixing hole having the same inner diameter as the first fixing hole. The rocker passes through the through hole in the middle of the sleeve, and the connecting pin passes through the first and third fixing holes that are axially connected to cross and fix the rocker and the sleeve, and is installed in the curved surface installation groove; one end of the sleeve extends outward to form a swing arm, which provides limit and support for the rotation of the shaft assembly; The support sleeve is sleeved on the rocker and installed on the side of the shaft sleeve in the curved mounting groove; the reset member is installed on the support sleeve with one end fixed to the rotating shaft assembly and the other end fixed to the mounting seat; The rocker is fixed on both sides of the curved mounting groove of the mounting seat, one end of which is connected to the sensor outside the mounting seat, and the other end is connected to the pedal; the upper cover is fixed to the mounting seat to seal the components inside the mounting seat.

2. The electronic throttle suspension according to claim 1, characterized in that: The surface where the swing arm contacts the mounting seat is provided with a rubber block to buffer the impact force during the resetting process.

3. The electronic throttle suspension according to claim 1, characterized in that: The through hole in the middle of the shaft sleeve extends along the length direction of the rocker to form a cylindrical shape and is internally connected to the support sleeve.

4. The electronic throttle suspension according to claim 1, characterized in that: The support sleeve is made of engineering plastic material with a smooth surface, such as POM material, which makes the torsion spring move more smoothly and reduces vibration and impact.

5. The electronic throttle suspension according to claim 1, characterized in that: The sensor is an angle sensor.

6. The electronic throttle suspension according to claim 1, characterized in that: The reset element is a high-strength metal torsion spring.

7. The electronic throttle suspension according to claim 1, characterized in that: The shaft assembly is made of metal or alloy, taking into account both durability and lightness.

8. The electronic throttle suspension according to claim 1, characterized in that: It also includes a small shaft sleeve, which is located in the mounting holes on both sides of the mounting groove on the curved surface of the mounting seat to reduce the friction between the rocker and the mounting seat.

9. The electronic throttle suspension according to claim 1, characterized in that: The pedal surface is provided with textures to increase the friction between the pedal and the sole to ensure safety.

10. A tractor, characterized in that: Including any one of the above described suspension electronic throttles.

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