CN212479418U - Low leakage rate electronic throttle body structure - Google Patents

Abstract

The utility model relates to a low leakage rate electronic throttle body structure; the butterfly valve comprises a valve body and a butterfly sheet, wherein an annular groove is formed in an inner cavity of the valve body, and a sealing ring is embedded in the annular groove; the sealing ring is in interference fit with the annular groove; the sealing ring is made of a non-metal material; the sealing ring is a rubber sealing ring, an asbestos rubber sealing ring, a flexible graphite sealing ring or a plastic sealing ring; the sealing ring is in the shape of two semi-circular arcs. The section of the annular groove is circular or U-shaped. The utility model can realize low leakage at the shut-down position, and has high application value and feasibility; the utility model solves the problem that the traditional electronic throttle body structure has large leakage when closed; the utility model has simple structure, low cost, convenient and flexible use.

Description

Low leakage rate electronic throttle body structure

Technical Field

The utility model relates to a low leakage volume electron throttle body structure that lets out.

Background

Due to structural limitation, the traditional electronic throttle body still has a certain opening degree (about 5 degrees) at the closing position, so that the electronic throttle body still has a certain leakage amount when being closed, and the leakage amount is increased along with the increase of the diameter of the throttle valve. With the development of the automobile industry, it is required that the leakage amount is as small as possible, which is advantageous for brake control and noise control.

The utility model discloses an authorization notice number is CN102392742B, discloses an electronic festival institute door body, its structure is complicated, contain the throttle valve body, the throttle valve axle, the throttle valve piece, position sensor and direct current motor, install motor gear on direct current motor and install the intermediate gear meshing mutually on the throttle valve body, intermediate gear meshes mutually with installing the epaxial sector gear of throttle valve, the torsional spring is connected with the sector gear of throttle valve body, this utility model discloses when a torsional spring became invalid, another torsional spring still can control the throttle valve and reset to high idle position, the security improves. Different from the structure of the utility model and the technical problem solved.

The authorized bulletin number is CN204827683U, and discloses an electronic joint institute door body, which comprises a valve body, a shaft body, a butterfly sheet and an electric control driving assembly, wherein the shaft body passes through the valve body and is fixed with the butterfly sheet in the inner cavity of the valve body, the shaft body is connected with a motor of the electric control driving assembly through a transmission device, and the shaft body is intersected with the axial lead of the inner cavity and forms an included angle of 45-65 degrees; the shaft body penetrates through the center of the butterfly sheet and is fixed with the butterfly sheet; the electronic throttle valve body also comprises an elastic element, the elastic element is fixed with the shaft body outside the inner cavity, and the inserted butterfly sheet with the inclined shaft body drives the butterfly sheet to rotate spirally so as to close and open the inner cavity of the valve body; the elastic element is arranged to reset the shaft body, so that the sealing performance of the electronic throttle body is better. Compared with the utility model, the structure is complex.

The license notice number is CN205532891U, and discloses an electronic throttle valve, which comprises a throttle valve body, a throttle valve shaft, a throttle valve sheet, a motor and a gear transmission assembly, wherein the throttle valve body is provided with a shaft hole, a bearing is arranged at the end part of the throttle valve shaft, an end cover is arranged at one side of the shaft hole, a central through groove is arranged in the middle part of the throttle valve shaft, the throttle valve sheet is inserted in the central through groove and is fixedly connected through a locking screw, the throttle valve shaft is provided with screw holes which are radially distributed, the screw holes are communicated with the central through groove and mutually form a vertical relation, one end of the throttle valve shaft, which is provided with the bearing, extends to a shaft end with a reduced diameter, a step surface is formed between the shaft end and the outer wall of the throttle valve shaft, the shaft end is sequentially sleeved with a gasket and a retainer ring, the outer wall of the matching part, the outer wall of the arc-shaped extension body is abutted with the gasket.

Disclosure of Invention

The utility model aims to solve the technical problem that the electronic throttle body that has overcome prior art existence lets out the big problem of leakage quantity when closing, provides a low leakage quantity electronic throttle body structure.

In order to solve the above technical problem, the present invention adopts the following technical solution, which is described below with reference to the accompanying drawings:

a low leakage electronic throttle body structure comprises a valve body and a butterfly sheet; the method is characterized in that: an annular groove 1 is arranged in the inner cavity of the valve body, and a sealing ring 2 is embedded in the annular groove 1.

In the technical scheme, the sealing ring 2 is in interference fit with the annular groove 1.

In the technical scheme, the sealing ring 2 is a non-metal sealing ring.

In the technical scheme, the sealing ring 2 is a rubber sealing ring, an asbestos rubber sealing ring, a flexible graphite sealing ring or a plastic sealing ring.

In the technical scheme, the sealing ring 2 is in the shape of two semi-circular arcs.

In the technical scheme, the section of the annular groove 1 is circular or U-shaped.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses can realize closing the position and let out leakage quantity by a short time, have high using value and feasibility.

2. The utility model provides a traditional electron throttle body structure have when closing to let out the big problem of leakage quantity.

3. The utility model has simple structure, low cost, convenient and flexible use.

Drawings

The invention will be further described with reference to the accompanying drawings:

fig. 1 is a schematic view of a low leakage electronic throttle body structure of the present invention;

fig. 2 is a cross-sectional view of the sealing ring embedded in the annular groove in the low leakage electronic throttle body structure of the present invention;

FIG. 3 is a schematic view of a seal ring structure;

in the figure: 1. an annular groove;

2. and (4) a sealing ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

referring to fig. 1, which is a schematic structural diagram of the electronic throttle body, the butterfly is disposed in an inner cavity of the valve body, and the butterfly rotates to close or communicate the inner cavity to close the electronic throttle body, but a gap exists between the butterfly and the inner cavity, and when the electronic throttle body is closed, a certain opening degree exists, which is generally about 5 degrees, so that the leakage amount is increased.

In order to reduce the leakage, the utility model provides a low leakage electronic throttle body structure, referring to fig. 1 and 2, the low leakage electronic throttle body structure comprises a valve body and a butterfly sheet;

the butterfly sheet is intersected with the axial lead of the inner cavity of the valve body and can rotate at an angle;

the butterfly sheet rotates in the inner cavity of the valve body to enable the inner cavity to be closed or communicated.

The butterfly sheet is in a shape of a circular sheet with the section of the inner cavity of the valve body hermetically matched with the inner cavity of the valve body.

An annular groove 1 is arranged in the inner cavity of the valve body, and the section of the annular groove 1 is circular or U-shaped;

the annular groove is embedded with a sealing ring 2, the sealing ring 2 is a nonmetal sealing ring, and the nonmetal sealing ring can be selected from a rubber sealing ring, an asbestos rubber sealing ring, a flexible graphite sealing ring and a plastic sealing ring. The sealing ring 2 is arranged between the butterfly sheet and the inner cavity of the valve body.

Referring to fig. 1, 2 and 3, the seal ring 2 is designed to have two semicircular arc shapes so as to avoid the shaft body.

Due to the existence of the sealing ring 2, the friction between the butterfly piece and the inner cavity is increased, the opening degree of the closed position of the electronic throttle body is reduced, the sealing effect between the butterfly piece and the inner cavity of the valve body is good, and meanwhile, the leakage amount of the electronic throttle body when the electronic throttle body is closed is reduced.

The utility model discloses simple structure, with low costs, it is convenient to change the sealing ring, and the maintenance is easy, can obtain extensive popularization and application.

And those not described in detail in this specification are well within the skill of those in the art.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims (6)

1. A low leakage electronic throttle body structure comprises a valve body and a butterfly sheet; the method is characterized in that: an annular groove (1) is arranged in the inner cavity of the valve body, and a sealing ring (2) is embedded in the annular groove (1).

2. The low leakage electronic throttle body structure of claim 1, wherein:

and the sealing ring (2) is in interference fit with the annular groove (1).

3. The low leakage electronic throttle body structure of claim 1, wherein:

the sealing ring (2) is made of non-metal materials.

4. The low leakage electronic throttle body structure of claim 3, wherein:

the sealing ring (2) is a rubber sealing ring, an asbestos rubber sealing ring, a flexible graphite sealing ring or a plastic sealing ring.

5. The low leakage electronic throttle body structure of any one of claims 1 to 4, wherein:

the sealing ring (2) is in the shape of two semi-circular arcs.

6. The low leakage electronic throttle body structure of claim 5, wherein:

the section of the annular groove (1) is circular or U-shaped.

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