CN211900841U - Novel needle valve rod component - Google Patents
Novel needle valve rod component Download PDFInfo
- Publication number
- CN211900841U CN211900841U CN202020426689.5U CN202020426689U CN211900841U CN 211900841 U CN211900841 U CN 211900841U CN 202020426689 U CN202020426689 U CN 202020426689U CN 211900841 U CN211900841 U CN 211900841U
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- needle valve
- valve rod
- steel ball
- conical surface
- positioning
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Abstract
The utility model discloses a novel needle valve rod component, which comprises a needle valve rod, wherein the bottom of the needle valve rod is provided with a positioning conical surface, and a steel ball is fixedly arranged in the positioning conical surface by welding; designing a positioning taper hole at the contact part of the needle valve rod and the steel ball; the structure is simple, the manufacturability is good, and the steel ball is convenient to position; the jump of the steel ball relative to the needle valve rod after welding is easy to guarantee.
Description
Technical Field
The utility model belongs to the technical field of the supporting apparatus of direct injection (GDI) sprayer in the gasoline engine cylinder, specific theory especially relates to a novel needle valve rod part.
Background
At present, gasoline engine oil supply systems with the emission of more than V use a great amount of in-cylinder direct injection (GDI) oil supply systems. The power performance is good, the emission index is excellent, but the structure manufacturability of the needle valve rod component is poor, when the needle valve rod is welded with the steel ball, the bounce of the steel ball relative to the needle valve rod is difficult to guarantee, how to design a needle valve component to realize flexible bounce in the oil injector, and accelerating the response speed of the needle valve rod component is an important direction needing to be developed in the field of the oil injector at present.
SUMMERY OF THE UTILITY MODEL
In order to achieve the purpose, the utility model adopts the technical scheme that does, the utility model provides a novel needle valve rod part, including the needle valve rod, its characterized in that, needle valve rod bottom is provided with the location conical surface, the location conical surface internal fixation is provided with the steel ball.
Preferably, the positioning conical surface is connected with the steel ball through welding.
Has the advantages that: compared with the prior art, the utility model has the advantages and positive effects that firstly, the end part of the needle valve rod is designed with a positioning conical surface structure; the positioning cone has good positioning effect on the steel ball, so that the requirement that the steel ball is small in bounce relative to the needle valve rod is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a needle valve rod member according to this embodiment.
In each of the above figures, 1-needle valve stem; 2-positioning the conical surface; and 3, steel balls.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Examples
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
The embodiment can be known from the attached figure 1 of the specification, and the scheme provides a novel needle valve rod component which comprises a needle valve rod, wherein a positioning conical surface is arranged at the bottom of the needle valve rod, and a steel ball is fixedly arranged in the positioning conical surface.
Furthermore, the positioning conical surface is connected with the steel ball in a welding mode.
The specific working principle is as follows:
as can be seen from the attached drawing, the needle valve rod part is attached to the sealing conical surface of the oil injector through the steel ball 3 in a normal state to play a sealing role; when the oil injector needs to supply oil to an engine, the needle valve rod part is lifted, so that the fuel oil is sprayed out through a spray hole of the oil injector; the needle valve rod 1 and the steel ball 3 are accurately positioned through the positioning conical surface 2, so that the needle valve component can flexibly jump in the oil injector; the response speed of the needle valve rod component is accelerated.
In the working principle, a positioning taper hole is designed at the contact part of the needle valve rod and the steel ball. The steel ball positioning device is simple in structure, good in manufacturability and convenient for positioning the steel balls. The jump of the steel ball relative to the needle valve rod after welding is easy to guarantee.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides a novel needle valve rod part, includes the needle valve rod, its characterized in that, needle valve rod (1) bottom is provided with location conical surface (2), location conical surface (2) internal fixation is provided with steel ball (3).
2. The novel needle valve rod component as claimed in claim 1, characterized in that the positioning conical surface (2) is connected with the steel ball (3) by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020426689.5U CN211900841U (en) | 2020-03-16 | 2020-03-16 | Novel needle valve rod component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020426689.5U CN211900841U (en) | 2020-03-16 | 2020-03-16 | Novel needle valve rod component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211900841U true CN211900841U (en) | 2020-11-10 |
Family
ID=73274381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020426689.5U Active CN211900841U (en) | 2020-03-16 | 2020-03-16 | Novel needle valve rod component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211900841U (en) |
-
2020
- 2020-03-16 CN CN202020426689.5U patent/CN211900841U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |