Gear torque device of electronic throttle valve

Abstract

The invention discloses a gear torque device of an electronic throttle valve, which comprises a driving motor and a gear transmission assembly, the gear transmission assembly is connected with the output end of the driving motor, a valve plate of the electronic throttle valve is in transmission connection with the gear transmission assembly, and the driving motor is a motor with a small output torque specification. And the gear transmission assembly amplifies the output torque of the driving motor according to a preset large gear ratio so as to meet the target torque required for driving the valve plate. According to the gear torque device of the electronic throttle valve, the motor with the small output torque specification is selected to be matched with the gear transmission assembly, and due to the fact that the manufacturing process of the small-torque motor is relatively simple, and the cost of needed materials is low, compared with a traditionally-used motor with the large output torque specification, the gear torque device of the electronic throttle valve is more convenient to use. The production cost can be greatly reduced; in addition, the small-torque motor is small in size and light in weight, and the size and the weight of the whole electronic throttle valve can be reduced.

Description

Technical Field

[0001] This invention relates to the field of electronic throttle technology, and more particularly to a gear torque device for electronic throttle. Background Technology

[0002] In electronic throttle systems, the precise actuation of the valve plates plays a crucial role in engine performance and fuel economy. Traditional electronic throttles typically rely on a high-torque electric motor to directly drive the valve plates. However, this approach has several drawbacks: Firstly, high-torque motors are expensive. Their manufacturing process often requires more complex processes and higher-quality materials to meet the demands of higher torque output, which undoubtedly increases the overall manufacturing cost of the electronic throttle. Secondly, high-torque motors are large and heavy. In the limited space of the engine compartment, an excessively large motor occupies more space, making the layout of other components difficult. Summary of the Invention

[0003] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a gear torque device for an electronic throttle valve, comprising: a drive motor and a gear transmission assembly, wherein the gear transmission assembly is connected to the output end of the drive motor, the valve plate of the electronic throttle valve is connected to the gear transmission assembly for transmission, the drive motor is a motor with a small output torque specification, and the gear transmission assembly amplifies the output torque of the drive motor through a preset large gear ratio to meet the target torque required for driving the valve plate.

[0004] In another preferred embodiment, the gear transmission assembly includes at least three sequentially meshing spur gears, the first spur gear being sleeved around the output shaft of the drive motor, and the last spur gear being connected to the valve plate in a transmission connection.

[0005] In another preferred embodiment, the gear transmission assembly includes a worm, a worm wheel, an intermediate tooth, and an output tooth. The output shaft of the drive motor is connected to the worm, the worm meshes with the worm wheel, the worm wheel meshes with the output tooth through the intermediate tooth, and the output tooth is connected to the valve plate in a transmission connection.

[0006] In another preferred embodiment, the large gear ratio is achieved by the gear ratio of the plurality of spur gears.

[0007] In another preferred embodiment, the large gear ratio is achieved by matching the gear ratio of the worm and the worm wheel with the gear ratio of the intermediate teeth and the output teeth.

[0008] In another preferred embodiment, an encoder is provided inside the drive motor.

[0009] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: By applying the present invention, a gear torque device for an electronic throttle valve is proposed, which uses a motor with a small output torque specification paired with a gear transmission assembly. Since the manufacturing process of the small torque motor itself is relatively simple and the required material cost is also low, it is beneficial to significantly reduce production costs compared with the traditional large output torque specification motor. In addition, the small torque motor is small in size and light in weight, which is also beneficial to reduce the overall size and weight of the electronic throttle valve. In the case of limited engine compartment space, the more compact and lightweight electronic throttle valve device is easier to install and arrange, does not occupy too much space, and provides more possibilities for the rational arrangement of other components. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the gear torque device for an electronic throttle valve according to the present invention. Figure 2 This is a schematic diagram of another embodiment of the gear torque device for an electronic throttle valve according to the present invention.

[0011] In the attached image: 1. Drive motor; 2. Spur gear; 3. Worm gear; 4. Worm wheel; 5. Intermediate gear; 6. Output gear. Detailed Implementation

[0012] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0014] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0015] like Figure 1-2As shown, a preferred embodiment of an electronic throttle gear torque device is illustrated, comprising: a drive motor 1 and a gear transmission assembly. The gear transmission assembly is connected to the output end of the drive motor 1. The valve plate of the electronic throttle is connected to the gear transmission assembly. The drive motor 1 is a motor with a small output torque specification. The gear transmission assembly amplifies the output torque of the drive motor 1 through a preset large gear ratio to meet the target torque required for valve plate actuation.

[0016] Furthermore, in a preferred embodiment, the gear transmission assembly includes at least three sequentially meshing spur gears 2. The first spur gear 2 is sleeved around the output shaft of the drive motor 1, and the last spur gear 2 is connected to the valve plate via a transmission. Further, when the engine needs to increase the intake air volume, the control system can send a command to the drive motor 1. Upon receiving the command, the drive motor 1 starts operating, driving the first spur gear 2 to rotate. The first spur gear 2 transmits power sequentially to the subsequent spur gears 2. After the torque is amplified by the gear ratio, the last spur gear 2 drives the valve plate to rotate, thereby increasing the electronic throttle opening and allowing more air to enter the engine. When the engine needs to reduce the intake air volume, the drive motor 1 reverses, driving the spur gears 2 to rotate in the opposite direction, which in turn drives the valve plate to rotate in the opposite direction, reducing the electronic throttle opening.

[0017] In another embodiment of the present invention, the gear transmission assembly includes: a worm 3, a worm wheel 4, an intermediate tooth 5, and an output tooth 6. The output shaft of the drive motor 1 is connected to the worm 3. The worm 3 meshes with the worm wheel 4. The worm wheel 4 meshes with the output tooth 6 through the intermediate tooth 5. The output tooth 6 is connected to the valve plate in a transmission connection. Furthermore, since the worm gear transmission has the characteristics of speed reduction and torque amplification as well as changing the direction of motion, the rotation of the worm 3 can drive the worm wheel 4 to rotate, achieving the first torque amplification. The worm wheel 4 meshes with the output tooth 6 through the intermediate tooth 5 to further adjust the torque magnitude. Finally, the output tooth 6 is connected to the valve plate in a transmission connection, transmitting the amplified torque to the valve plate.

[0018] Furthermore, as a preferred embodiment, a large gear ratio is achieved through the gear ratio of a plurality of spur gears 2.

[0019] In another embodiment of the present invention, a large gear ratio is achieved by matching the gear ratio of the worm 3 and the worm wheel 4 with the gear ratio of the intermediate tooth 5 and the output tooth 6.

[0020] Furthermore, in a preferred embodiment, an encoder is installed inside the drive motor 1, and the encoder is connected to the external engine control system. The encoder inside the drive motor 1 monitors the operating status of the drive motor in real time. When the drive motor 1 drives the spur gear 2 or worm gear 3 to rotate, the encoder can accurately record information such as the speed and rotation angle of the drive motor 1. The encoder can then feed this data back to the engine control system. Based on this feedback data, the control system can accurately determine the operating status of the drive motor 1. If the valve plate needs to maintain a stable opening under a specific operating condition, the control system can determine whether the valve plate has reached the target opening based on the rotation angle information of the drive motor 1 fed back by the encoder. If it has not reached the target opening, the control system will adjust the output current or voltage of the drive motor 1, thereby fine-tuning the output torque of the drive motor 1, so that the valve plate can accurately reach and maintain the target opening position, ensuring precise control of the electronic throttle.

[0021] The working principle of this invention is as follows: During operation, the engine control system can send an opening control signal to the drive motor 1. After receiving the signal, the drive motor 1 starts, and its output torque is amplified by the gear transmission assembly and transmitted to the valve plate, driving the valve plate to rotate to adjust the opening.

[0022] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A gear torque device for an electronic throttle valve, characterized in that, include: The system includes a drive motor and a gear transmission assembly. The gear transmission assembly is connected to the output end of the drive motor. The valve plate of the electronic throttle is connected to the gear transmission assembly. The drive motor is a motor with a small output torque specification. The gear transmission assembly amplifies the output torque of the drive motor through a preset large gear ratio to meet the target torque required for driving the valve plate.

2. The gear torque device for an electronic throttle valve according to claim 1, characterized in that, The gear transmission assembly includes at least three sequentially meshing spur gears. The first spur gear is sleeved around the output shaft of the drive motor, and the last spur gear is connected to the valve plate in a transmission connection.

3. The gear torque device for an electronic throttle valve according to claim 1, characterized in that, The gear transmission assembly includes a worm, a worm wheel, an intermediate tooth, and an output tooth. The output shaft of the drive motor is connected to the worm, the worm meshes with the worm wheel, the worm wheel meshes with the output tooth through the intermediate tooth, and the output tooth is connected to the valve plate in a transmission connection.

4. The gear torque device for an electronic throttle valve according to claim 2, characterized in that, The large gear ratio is achieved through the gear ratio of several spur gears.

5. The gear torque device for an electronic throttle valve according to claim 3, characterized in that, The large gear ratio is achieved by matching the gear ratio of the worm and the worm wheel with the gear ratio of the intermediate teeth and the output teeth.

6. The gear torque device for an electronic throttle valve according to claim 1, characterized in that, An encoder is installed inside the drive motor.

Images