throttle body

Abstract

A throttle body comprises a body, a throttle shaft and a throttle sheet. The throttle shaft is connected with the body through bearings, the throttle sheet is mounted on the throttle shaft, the body comprises an upper body and a lower body which are connected into a whole, a first step and a second step used for forming sealing with the throttle sheet are respectively arranged on two sides, corresponding to the throttle shaft, of the body, a first curved surface is arranged on the body on one side of the first step along the rotating direction of the throttle sheet, and a second curved surface is arranged on the body on one side of the second step along the rotating direction of the throttle sheet. The throttle body is simple in structure, the throttle sheet and an inner cavity of the throttle body are not easy to be blocked, the body is of a split type, the curved surfaces are arranged on the surface of the inner cavity, the body can be formed in one step, and production cost is low.

Description

technical field [0001] The invention relates to an automobile part, in particular to a throttle body. Background technique [0002] When the throttle plate in the throttle body is in the closed state, the throttle plate and the throttle body body are currently radially sealed. In order to achieve as little leakage as possible, the matching precision is required to be high, but it is easy to get stuck. [0003] The body of the existing throttle body is usually integral, and the processing method is integral die-casting or injection molding, and the inner cavity matching surface is finished. This integral structure makes the inner cavity surface only a simple cylindrical surface before finishing. , If the inner cavity is a complex surface, it is difficult to draw the mold, and the finishing of the matching surface of the inner cavity, such as a cylindrical surface or a spherical surface, is usually processed on an expensive multi-axis machine tool, and the investment and proce...

AI Technical Summary

Problems solved by technology

[0002] When the throttle plate in the throttle body is in the closed state, the throttle plate and the throttle body body are currently radially sealed. In order to achieve as little leakage as possible, high matching precision is required, but it is easy to get stuck

[0003] The body of the existing throttle body is usually integral, and the processing method is integral die-casting or injection molding, and the inner cavity matching surface is finished. This integral structure makes the inner cavity surface only a simple cylindrical surface before finishing. , if the inner cavity is a complex surface, it is difficult to draw the mold, and the finishing of the matching surface of the inner cavity, such as a cylindrical surface or a spherical surface, is usually processed on an expensive multi-axis machine tool, and the investment and processing costs are large.

[0004] At present, the mainstream overall die-casting aluminum alloy is relatively heavy, which is not suitable for the development trend of lightweight vehicles, and is not conducive to the safety of vehicles after collisions.

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