CN-224200738-U - Electronic throttle valve body

CN224200738UCN 224200738 UCN224200738 UCN 224200738UCN-224200738-U

Abstract

The utility model provides an electronic throttle body, which comprises a throttle body and a throttle blade for driving a throttle shaft to rotate, wherein a rotating shaft driving mechanism for driving the throttle shaft to rotate is arranged in the body, the rotating shaft driving mechanism comprises a direct current motor, a motor gear, an intermediate gear, a sector gear component, a magnetic core component and a torsion spring, the direct current motor is arranged on one side of the throttle body, the motor gear is arranged on an output shaft of the direct current motor, the intermediate gear is rotatably arranged on the throttle body, the intermediate gear is meshed with the motor gear, the sector gear is connected to the end part of the throttle shaft through laser welding, the sector gear is meshed with the intermediate gear, the torsion spring is sleeved on the sector gear, and two ends of the torsion spring are fixed on limiting support legs of the sector gear. The utility model has the advantages of simple structure, low cost, good consistency of the flow of the bottom dead center of the assembly machinery and the flow of the default position, and great improvement of the reliability and stability of the electronic throttle body.

Inventors

LEI RONG
QIN FENG
WAN LIJUN
FENG CHAO
LEI CHONG
XIA ZHIQIANG
ZHANG XINGHUA

Assignees

四川红光汽车机电有限公司

Dates

Publication Date: 20260505
Application Date: 20250616

Claims (7)

1. An electronic throttle body is characterized by comprising a throttle body (1), a throttle shaft (2), a throttle blade (3) and a position sensor (4), wherein the throttle shaft (2) is rotatably arranged in the throttle body (1) through a needle bearing (6) and a sliding bearing (7), the needle bearing (6) is positioned on one side of the throttle shaft (2) close to a sector gear (9), the sliding bearing (7) is positioned on one side of the throttle shaft (2) far away from the sector gear (9), the throttle blade (3) is fixedly arranged on the throttle shaft (2), the position sensor (4) is fixed on the throttle body (1) through a clamp (14), the electronic throttle body further comprises a direct current motor (5), a motor gear (12), an intermediate gear (13), the sector gear (9) and a torsion spring (10), the direct current motor (5) is arranged on one side of the throttle body (1), the motor gear (12) is fixed on the output shaft of the direct current motor (5), the intermediate gear (13) is rotatably arranged on the throttle body (1) and is meshed with the motor gear (12) and is meshed with the sector gear (9) and is fixed on the end part of the throttle shaft (9) through the clamp (14), the two support legs are respectively fixed on the two sides of the limit support leg of the sector gear (9) and the limit support leg of the throttle valve shell (1).
2. An electronic throttle body according to claim 1, characterized in that the direct current motor (5) is fixedly mounted on the throttle body (1) by means of two tapping screws (8).
3. An electronic throttle body according to claim 1, characterized in that the throttle body (1) is integrated with a structure (19) for mounting a fixed harness, a cross-shaped reinforcing rib structure (20) and a lightening hole structure (21).
4. An electronic throttle body according to claim 1, characterized in that the throttle body (1) is provided with a sensor mounting and positioning groove (15) for accurate positioning of the position sensor (4).
5. An electronic throttle body according to claim 1, characterized in that the throttle body (1) is provided with three bosses at the air inlet end for stable support when connected to the engine intake manifold.
6. An electronic throttle body according to claim 1, characterized in that the throttle blade (3) is designed as a7 ° deflection angle structure.
7. An electronic throttle body as claimed in claim 1, characterized in that the sector gear default position structure (22) of the sector gear (9) is constituted by a combination of straight and rounded corners for limiting the initial angular range of the throttle shaft (2).

Description

Electronic throttle valve body Technical Field The utility model relates to the technical field of throttle valves, in particular to an electronic throttle valve body. Background The electronic throttle valve body is an important control part of the automobile gasoline engine, can provide continuously variable air flow for the engine, and adopts the electronic throttle valve control system to accurately control the opening of the throttle valve, so that a reasonable air-fuel ratio is realized, mixed gas is fully combusted, emission is reduced, and the dynamic property, economical efficiency and comfort of the engine are improved. In the current electronic throttle body, the limiting mode of the mechanical bottom dead center position and the default position generally adopts the mode of an idle speed adjusting screw or a mechanical limiting structure, and has high requirements on the manufacturing precision of parts and large equipment investment. In the current electronic throttle body, in order to realize the positive and negative rotation return moment requirement of the electronic throttle body, most of the electronic throttle bodies respectively use two independent torsion springs or left-right rotation double torsion springs, and the electronic throttle body has the advantages of multiple parts, complex structure and difficult assembly. In the current electronic throttle body, most direct current motors adopt large motors and are heavier, and an independent pressing plate, an independent motor stator and an independent base are used, so that the installation and fixation of the motors are realized through subsequent assembly, and the electronic throttle body has the advantages of more parts, complex structure, difficult assembly and high cost. Most of current screws for installing motors on electronic throttle bodies adopt common screws, and the shell machining needs tapping machining efficiency is low. Disclosure of utility model The utility model aims to overcome the defects of the prior art, provide a novel electronic throttle body with high assemblability and reliability, the device has the advantages of light weight, compact structure, convenient installation, reliable structure and low cost. The electronic throttle body is characterized by comprising a throttle shell, a throttle shaft, a throttle blade and a position sensor, wherein the throttle shaft is rotatably arranged in the throttle shell through a needle bearing and a sliding bearing, the needle bearing is positioned at one side of the throttle shaft, which is close to a sector gear, the sliding bearing is positioned at one side of the throttle shaft, which is far away from the sector gear, the throttle blade is fixedly arranged on the throttle shaft, the position sensor is fixedly arranged on the throttle shell through a clamp, the electronic throttle body further comprises a direct current motor, a motor gear, an intermediate gear, the sector gear and a torsion spring, the direct current motor is arranged at one side of the throttle shell, the motor gear is fixedly arranged on an output shaft of the direct current motor, the intermediate gear is rotatably arranged on the throttle shell and meshed with the motor gear, the sector gear is fixedly arranged at the end part of the throttle shaft and meshed with the intermediate gear, and the torsion spring is sleeved on the sector gear, and two support legs of the torsion spring are respectively fixed at two sides of a limit support leg of the sector gear and a limit support leg of the throttle shell. Further, the direct current motor is fixedly arranged on the throttle valve shell through two tapping screws. Further, a structure for installing and fixing the wire harness, a cross-shaped reinforcing rib structure and a lightening hole structure are integrated on the throttle valve shell. Further, a sensor mounting positioning groove is formed in the throttle valve shell and used for accurately positioning the position sensor. Furthermore, the air inlet end of the throttle valve shell is provided with three bosses which are used for stably supporting the throttle valve when the throttle valve shell is connected with an engine intake manifold. Further, the throttle blade is designed to be of a 7-degree deflection angle structure. Further, the default position structure of the sector gear is formed by a combination of straight and rounded corners for limiting the initial angular range of the throttle shaft. The electronic throttle body has the beneficial effects that: 1. The throttle valve shell is provided with a positioning groove for installing a sensor, the positioning groove is matched with a sensor positioning column to facilitate the installation of the sensor, the air inlet end of the throttle valve shell is provided with three limiting bosses for supporting and limiting an air inlet manifold of an engine, the throttle valve shell is provided with a cross-shaped reinforcing rib structure