Electronic throttle body assembly

Abstract

The utility model relates to the related technical field of throttle valves, in particular to an electronic throttle valve body assembly which comprises a bottom shell, and a transmission limiting mechanism is arranged in the bottom shell. According to the electronic throttle valve body assembly, through the arrangement of the transmission limiting mechanism, the electronic throttle valve body assembly accurately, reliably and safely adjusts the opening degree of a throttle valve, the air inlet control quality and efficiency of an engine are improved, a transmission device is started from a motor, a driving gear drives a driven gear, a driving gear is driven through a rotating shaft, and a half gear and a limiting block are driven; power is transmitted to the valve plate to adjust the opening degree, stable power transmission under various working conditions is ensured, the air inlet requirement is met, a limiting device is crucial, a limiting groove limits the track of a limiting rod, excessive rotation of a limiting block is avoided, the opening degree of the valve plate is prevented from being abnormal, safety is guaranteed, and during adjustment, a reset spring is matched with a bearing, so that the limiting device quickly and accurately responds to an instruction; on the contrary, the reset spring rapidly resets the valve plate, and it is ensured that adjustment is timely and accurate.

Description

Technical Field

[0001] This utility model relates to the field of throttle body technology, and in particular to an electronic throttle body assembly. Background Technology

[0002] The throttle valve is a device that controls the amount of air entering the engine. It is typically located between the air filter and the engine intake manifold. It mainly consists of the throttle body, throttle plate, and drive mechanism. Its working principle is to control the amount of air entering the engine by changing the opening of the throttle plate. When the driver presses the accelerator pedal, a signal is transmitted to the throttle valve's drive mechanism. The drive mechanism rotates the throttle plate, increasing the opening and allowing more air to enter the engine. Conversely, decreasing the opening reduces the amount of air entering the engine. This allows the throttle valve to adjust the airflow according to different engine operating conditions, such as idling, acceleration, and deceleration. The throttle body precisely controls the intake air volume to coordinate with the fuel injection system, ensuring good engine performance and fuel economy. It also has a significant impact on emissions. The throttle body is a controllable valve that controls the air entering the engine. Traditional engine throttle control mechanisms operate via a cable or lever, with one end connected to the accelerator pedal and the other end connected to the throttle linkage plate. Electronic throttle bodies mainly use a throttle position sensor to control the opening angle of the throttle body based on the energy required by the engine, thereby adjusting the intake air volume. Therefore, an electronic throttle body assembly is particularly needed.

[0003] However, traditional throttle valves generate relatively high noise during use. Traditional throttle valves are controlled by mechanical linkages and cables, and the components are prone to wear due to long-term friction. This not only requires frequent maintenance, but also often leads to a decrease in the precision of the fit due to wear, resulting in inaccurate control of the throttle opening. This, in turn, affects the engine's intake air volume and air-fuel ratio, causing unstable power output. At the same time, the existing throttle valve plate has poor reset performance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an electronic throttle body assembly, which includes a transmission component and a reset component made of polyoxymethylene plastic, thus solving the problems of high noise and poor valve plate reset performance in traditional throttle bodies.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An electronic throttle body assembly includes a base shell, a connector mounted on the surface of the base shell, a reinforcing strip mounted on the surface of the base shell, an outer shell mounted on the top of the base shell, a motor mounted on one end of the upper part of the outer shell, a valve pipe mounted on the top of the outer shell, a valve plate mounted on one end of the valve pipe, a rotating rod mounted inside the valve pipe, and a transmission limiting mechanism disposed inside the base shell. The transmission limiting mechanism includes a transmission device and a limiting device, and the limiting device limits the operating range of the transmission device.

[0009] Preferably, the transmission device includes a drive gear, a driven gear, a rotating shaft, a driving gear, a base, a limiting plate, a limiting block, and a half gear. The drive gear is installed at the bottom of the motor, and the driven gear meshes with the surface of the drive gear. The rotating shaft is fixedly connected to the surface of the driven gear, and the driving gear is fixedly connected to the surface of the rotating shaft. The base is installed at the bottom inside the bottom shell, and the limiting plate is installed above the base. The limiting block is rotatably connected above the limiting plate, and a half gear is installed on the side of the limiting block. The half gear meshes with the driving gear, and a limiting device is provided above the limiting plate.

[0010] Preferably, the limiting device includes a limiting groove, a connecting rod, a limiting rod, a reset rod, a reset spring, and a bearing. The limiting plate has a limiting groove on its upper surface. A connecting rod is fixedly connected to one side of the limiting block. A limiting rod is fixedly connected to the surface of the connecting rod. A reset rod is installed on the upper surface of the limiting plate. A reset spring is sleeved on the outer side of the reset rod. A bearing is installed on the upper surface of the reset rod. The upper surface of the limiting rod is fixedly connected to the bottom of the bearing.

[0011] Preferably, the reinforcing strips are provided in multiple identical sets on the surface of the bottom shell and are evenly distributed on each side of the bottom shell.

[0012] Preferably, the connector and the bottom shell are connected in a sealed manner, and a sealing gasket is provided on the outside of the connector.

[0013] Preferably, the driving gear is driven by a motor, and the shaft is connected to the driven gear and the driving gear by a key.

[0014] Preferably, the limiting rod drives the limiting block and the half gear to slide in the limiting groove via the connecting rod, and the outer wall dimension of the limiting rod matches the inner wall dimension of the limiting groove.

[0015] Compared with the prior art, this utility model provides an electronic throttle body assembly with the following beneficial effects: Through the setting of the transmission limit mechanism, the electronic throttle body assembly can accurately, reliably and safely adjust the throttle opening, improve the quality and efficiency of engine intake control. The transmission device is started by the motor, the drive gear drives the driven gear, the shaft drives the drive gear, drives the half gear and the limit block, and transmits power to the valve plate to adjust the opening. The polyoxymethylene plastic gear reduces noise, and with its good performance and self-lubrication, it reduces energy consumption and wear, extends the life of the device, ensures stable power transmission under various operating conditions, and meets the intake demand. The limit device is crucial. The limit groove limits the trajectory of the limit rod, avoids excessive rotation of the limit block, prevents abnormal valve plate opening, and ensures safety. During adjustment, the return spring cooperates with the bearing to allow the limit device to respond quickly and accurately to the command. When the intake volume needs to be increased, the limit block rotates; otherwise, the return spring quickly resets the valve plate, ensuring timely and accurate adjustment. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the left side view of the appearance of this utility model;

[0018] Figure 3 This is a schematic diagram of the transmission limiting mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the limiting rod and the limiting groove of this utility model.

[0020] In the diagram: 1. Bottom shell; 2. Connector; 3. Reinforcing strip; 4. Outer shell; 5. Motor; 6. Valve pipe; 7. Valve plate; 8. Rotating rod; 9. Transmission limiting mechanism; 901. Driving gear; 902. Driven gear; 903. Rotating shaft; 904. Drive gear; 905. Base; 906. Limiting plate; 907. Limiting block; 908. Half gear; 909. Limiting groove; 910. Connecting rod; 911. Limiting rod; 912. Reset rod; 913. Reset spring; 914. Bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4An electronic throttle body assembly includes a base shell 1, a connector 2 mounted on the surface of the base shell 1, a reinforcing strip 3 mounted on the surface of the base shell 1, an outer shell 4 mounted on the top of the base shell 1, a motor 5 mounted on one end of the upper part of the outer shell 4, a valve pipe 6 mounted on the top of the outer shell 4, a valve plate 7 mounted on one end of the valve pipe 6, a rotating rod 8 mounted inside the valve pipe 6, and a transmission limiting mechanism 9 provided inside the base shell 1, the transmission limiting mechanism 9 including a transmission device and a limiting device.

[0023] In this embodiment, the transmission device includes a drive gear 901, a driven gear 902, a rotating shaft 903, a driving gear 904, a base 905, a limiting plate 906, a limiting block 907, and a half gear 908. The drive gear 901 is mounted on the bottom of the motor 5. The driven gear 902 meshes with the surface of the drive gear 901. The rotating shaft 903 is fixedly connected to the surface of the driven gear 902. The driving gear 904 is fixedly connected to the surface of the rotating shaft 903. The base 905 is mounted inside the bottom of the bottom shell 1. The limiting plate 906 is mounted above the base 905. The limiting block 907 is rotatably connected above the limiting plate 906. A half-gear 908 is mounted on the side of 07, and the half-gear 908 meshes with the drive gear 904. A limit device is provided above the limit plate 906. Through the transmission device, when the electronic throttle body assembly needs to adjust the throttle opening, the control system will send a command to the motor 5, and the motor 5 will start running. After the motor 5 starts running, it drives the drive gear 901 mounted at its bottom to rotate synchronously. When the drive gear 901 rotates, because it meshes with the driven gear 902, it will transmit power to the driven gear 902, causing the driven gear 902 to start rotating. The driven gear 902 is fixedly connected to the rotating shaft 903, so the driven gear... When gear 902 rotates, it drives shaft 903 to rotate as well. Simultaneously, drive gear 904, mounted on its surface, also rotates. Drive gear 904 meshes with half gear 908. The rotation of drive gear 904 drives half gear 908 to rotate. Half gear 908 is mounted on the side of limit block 907, so its rotation causes limit block 907 to rotate above limit plate 906. The rotation of limit block 907 is connected to rotating rod 8 inside valve pipe 6, transmitting motion to valve plate 7, causing valve plate 7 to rotate around rotating rod 8. This adjusts the opening of valve plate 7, controlling the intake of fuel into the engine. During the entire transmission process, the base 905 provides stable support for the limiting plate 906, ensuring the relative position stability between the various components of the transmission device. This allows power to be accurately and reliably transmitted from the motor 5 to the valve plate 7, meeting the engine's intake air requirements under different operating conditions. Furthermore, the meshing transmission between the gears in the transmission device has high precision and stability, enabling precise control of the valve plate 7's opening change and achieving accurate adjustment of the engine's intake air. Meanwhile, the drive gear 901, driven gear 902, drive gear 904, and half gear 908 are all made of polyoxymethylene plastic, which helps reduce transmission noise.

[0024] Furthermore, the limiting device includes a limiting groove 909, a connecting rod 910, a limiting rod 911, a reset rod 912, a reset spring 913, and a bearing 914. A limiting groove 909 is formed on the upper surface of the limiting plate 906. A connecting rod 910 is fixedly connected to one side of the limiting block 907. A limiting rod 911 is fixedly connected to the surface of the connecting rod 910. A reset rod 912 is installed above the limiting plate 906. A reset spring 913 is sleeved on the outer side of the reset rod 912. A bearing 914 is installed above the reset rod 912. The upper part of the limiting rod 911 is fixedly connected to the bearing. At the bottom of 914, through the setting of the limiting device, when the motor 5 drives the transmission device to make the limiting block 907 start to rotate, the connecting rod 910, which is fixedly connected to one side of the limiting block 907, will move together with the limiting block 907. Since the limiting rod 911 is fixedly connected to the surface of the connecting rod 910, the limiting rod 911 will also move accordingly. The limiting rod 911 is restricted to sliding within the limiting groove 909 opened on the upper surface of the limiting plate 906. The shape and size of the limiting groove 909 are pre-designed, which defines the movement trajectory of the limiting rod 911, thereby indirectly restricting the limiting block 907. The rotation range is limited to prevent excessive rotation of the limit block 907 and ensure that the opening of the valve plate 7 is within a safe and reasonable range. When it is necessary to adjust the opening of the valve plate 7, the limit block 907 rotates, the limit rod 911 slides in the limit groove 909 and pushes the bearing 914 above the reset rod 912 to move. At the same time, it compresses the reset spring 913 sleeved on the outside of the reset rod 912. The reset spring 913 will generate an elastic force in the opposite direction to the rotation of the limit block 907. When the control system issues a command to stop the motor 5, the elastic potential energy stored in the reset spring 913 is released, and the generated elastic potential energy is released. The elastic force is transmitted to the limit rod 911 through the bearing 914, pushing the limit rod 911 to slide in the opposite direction within the limit groove 909, thereby driving the connecting rod 910 and the limit block 907 to rotate in the opposite direction, causing the valve plate 7 to move in the closing direction until it reaches the appropriate opening position or returns to the initial state. The presence of the bearing 914 reduces the friction between the limit rod 911 and the reset rod 912, making the movement of the limit rod 911 smoother, ensuring that the limit device can accurately and timely limit and reset the transmission device, and ensuring the stable operation and precise control of the electronic throttle body assembly.

[0025] Furthermore, multiple sets of reinforcing strips 3 are uniformly distributed on each side of the bottom shell 1, significantly enhancing the overall structural strength of the bottom shell 1. During the operation of the electronic throttle body assembly, it is subjected to various vibrations and external impacts. The multiple sets of uniformly distributed reinforcing strips 3 act like a sturdy skeleton, effectively dispersing these external forces and preventing the bottom shell 1 from deforming due to uneven stress. This not only ensures the installation stability of components such as the internal transmission limit mechanism 9 of the bottom shell 1, but also avoids component misalignment or damage caused by deformation of the bottom shell 1, thereby extending the service life of the electronic throttle body assembly and improving its operational reliability and stability.

[0026] Furthermore, the connector 2 and the bottom shell 1 are connected in a sealed manner. A sealing gasket is provided on the outside of the connector 2. The connector 2 provides a reliable interface for the connection between the electronic throttle body assembly and external components. The sealing gasket plays a good sealing role and can effectively prevent external dust, moisture and oil and other impurities from entering the bottom shell 1. If these impurities enter the bottom shell 1, they may cause corrosion, wear or short circuits to precision components such as the transmission limit mechanism 9, affecting the normal operation of the electronic throttle body assembly. The sealed connector 2 ensures that the internal components are in a relatively clean and stable working environment, ensuring the accuracy of signal transmission and the performance stability of the electronic throttle body assembly.

[0027] In addition, the drive gear 901 drives the driven gear 902 via the motor 5. The shaft 903 is connected to the driven gear 902 and the drive gear 904 by a key. Through the arrangement of the drive gear 901, driven gear 902, shaft 903 and drive gear 904, efficient and stable power transmission is achieved. The power output by the motor 5 is transmitted to the driven gear 902 through the drive gear 901. This gear transmission method has the characteristics of high transmission efficiency and accurate transmission ratio, which can accurately transmit the power of the motor 5 to the subsequent components. The key connection between the shaft 903 and the driven gear 902 and drive gear 904 can reliably transmit torque, ensuring that the driven gear 902 and drive gear 904 rotate synchronously with the shaft 903, avoiding relative slippage and power loss. In this way, the entire transmission system can accurately transmit the power of the motor 5 to the half gear 908, thereby controlling the opening of the valve plate 7 and achieving precise adjustment of the engine intake air volume.

[0028] It is worth noting that the limiting rod 911 drives the limiting block 907 and the half gear 908 to slide in the limiting groove 909 via the connecting rod 910. The outer wall dimension of the limiting rod 911 matches the inner wall dimension of the limiting groove 909. Through the setting of the limiting groove 909 and the limiting rod 911, the rotation range of the limiting block 907 and the half gear 908 is precisely limited. The limiting groove 909 provides a precise motion trajectory for the limiting rod 911, allowing the rotation angle of the limiting block 907 and the half gear 908 to be controlled. The control is strictly controlled. When the transmission device drives the limit block 907 to rotate, the limit rod 911 slides in the limit groove 909. Once it reaches the boundary of the limit groove 909, it will prevent the limit block 907 from continuing to rotate, thereby avoiding the valve plate 7 from being over-opened or over-closed. This precise limiting function ensures that the electronic throttle body assembly can work within a safe and reasonable range, improves the accuracy and stability of engine intake control, and prevents engine performance degradation or malfunction caused by abnormal valve plate 7 opening.

[0029] During use, when the vehicle's control system determines that the intake air volume needs adjustment based on engine operating conditions such as speed, load, and temperature, it sends a corresponding control signal to the motor 5. The motor 5 starts operating according to the signal, driving the valve plate 7 to rotate through the transmission device, thereby achieving precise adjustment of the throttle opening. The reinforcing strip 3 enhances the structural strength of the bottom shell 1, enabling it to remain stable in complex working environments. Even under severe vibrations and bumps during vehicle operation, the bottom shell 1 provides stable support for the internal transmission limit mechanism 9, ensuring the normal operation of the transmission device and the limit device. At the same time, the sealed connector 2 ensures the cleanliness and stability of the bottom shell 1, laying the foundation for the long-term reliable operation of the electronic throttle body assembly. In the transmission device, the drive gear 901, driven gear 902, rotating shaft 903, and drive gear 904 efficiently transmit the power of the motor 5 to the half gear 908, thereby driving the valve plate 7 to rotate. The gears made of polyoxymethylene plastic not only reduce transmission noise but also have a certain degree of self-lubrication and wear resistance, reducing energy loss and extending the service life of the gears. The positioning device constantly monitors the opening range of the valve plate 7. When the valve plate 7 reaches the preset maximum or minimum opening, the limit rod 911 stops moving under the restriction of the limit groove 909, preventing the valve plate 7 from being over-opened or over-closed. At the same time, the return spring 913 can promptly return the valve plate 7 to the appropriate position when the motor 5 stops driving, ensuring the stability of engine intake. In addition, the electronic throttle body assembly also works closely with other engine control systems. For example, when the engine is idling, the control system will precisely control the operation of the motor 5 to keep the valve plate 7 at an appropriate opening, maintaining a stable engine idle speed. When the vehicle accelerates, the control system will quickly increase the opening of the valve plate 7 to increase the intake volume to meet the engine's power demand. Throughout the vehicle's operation, the electronic throttle body assembly continuously adjusts according to the engine's operating conditions to ensure that the engine is always in the best working state. Through precise intake control, the engine's power performance, fuel economy, and emission performance are improved, providing a strong guarantee for the safe and efficient operation of the vehicle. This completes the usage process of an electronic throttle body assembly.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electronic throttle body assembly comprising a base housing (1), characterized in that: The surface of the bottom shell (1) is provided with a connecting head (2), and the surface of the bottom shell (1) is also provided with a reinforcing strip (3); the upper portion of the bottom shell (1) is provided with a shell (4), one end of the upper portion of the shell (4) is provided with a motor (5), the upper portion of the shell (4) is provided with a valve pipe (6), one end of the valve pipe (6) is provided with a valve plate (7), and the inside of the valve pipe (6) is provided with a rotating rod (8); and the inside of the bottom shell (1) is provided with a transmission limiting mechanism (9). The transmission limiting mechanism (9) comprises a transmission device and a limiting device, and the limiting device limits the operation range of the transmission device. The transmission device comprises a driving gear (901), a driven gear (902), a rotating shaft (903), a driving gear (904), a base (905), a limiting plate (906), a limiting block (907) and a half gear (908); the bottom of the motor (5) is provided with the driving gear (901), the surface of the driving gear (901) is engaged with the driven gear (902), the surface of the driven gear (902) is fixedly connected with the rotating shaft (903), the surface of the rotating shaft (903) is fixedly connected with the driving gear (904), the inside bottom of the bottom shell (1) is provided with the base (905), the upper portion of the base (905) is provided with the limiting plate (906), the upper portion of the limiting plate (906) is rotatably connected with the limiting block (907), the side surface of the limiting block (907) is provided with the half gear (908), the half gear (908) is engaged with the driving gear (904), and the upper portion of the limiting plate (906) is provided with the limiting device. The limiting device comprises a limiting groove (909), a connecting rod (910), a limiting rod (911), a reset rod (912), a reset spring (913) and a bearing (914); the upper surface of the limiting plate (906) is provided with the limiting groove (909), one side of the limiting block (907) is fixedly connected with the connecting rod (910), the surface of the connecting rod (910) is fixedly connected with the limiting rod (911), the upper portion of the limiting plate (906) is provided with the reset rod (912), the outer side of the reset rod (912) is provided with the reset spring (913), the upper portion of the reset rod (912) is provided with the bearing (914), and the upper portion of the limiting rod (911) is fixedly connected to the bottom of the bearing (914).

2. An electronic throttle body assembly as in claim 1, wherein: The reinforcing strip (3) is provided with the same multiple groups on the surface of the bottom shell (1) and is uniformly distributed on each side surface of the bottom shell (1).

3. An electronic throttle body assembly as in claim 1, wherein: The connecting head (2) and the bottom shell (1) are in sealing connection, and the outer side of the connecting head (2) is provided with a sealing washer.

4. An electronic throttle body assembly as in claim 1, wherein: The driving gear (901) drives the driven gear (902) through the motor (5), and the rotating shaft (903), the driven gear (902) and the driving gear (904) are in key connection.

5. An electronic throttle body assembly as in claim 1, wherein: The limiting rod (911) drives the limiting block (907) and the half gear (908) to slide in the limiting groove (909) through the connecting rod (910), and the outer wall size of the limiting rod (911) is consistent with the inner wall size of the limiting groove (909).

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