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an electromagnet

A technology of electromagnets and magnetic cores, applied in the field of electromagnets, can solve problems such as poor response speed and control stability, high requirements for parts processing precision, and rising production costs, and achieve small frictional resistance, improved response speed and stable control Sexuality, the effect of improving motion sensitivity and motion stability

Active Publication Date: 2018-01-02
MIANYANG FULIN PRECISION MACHINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the response speed and control stability of the electromagnet in the existing mid-mounted control valve are relatively poor, which leads to a decrease in the response speed and control stability of the variable cam timing system of the engine, and deteriorates the engine performance; In addition, the assembly process of the existing center-mounted control valve is also relatively complicated, and the processing accuracy of parts is required to be high, which leads to an increase in production costs

Method used

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Embodiment Construction

[0026] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following describes the present invention in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0027] Such as figure 1 The electromagnet shown mainly includes a housing 5, a skeleton 6, a front yoke sleeve 8, a back yoke sleeve 10, and a magnetic core 11, wherein the structure of the housing 5 is as image 3 In the cup-shaped structure shown, an installation through hole is opened at the bottom of the housing 5; the overall structure of the front yoke 8 is as Figure 4 In the T-shaped structure shown, three stepped holes are provided on the front yoke sleeve 8, which are a first-stage inner hole 81, a second-stage inner hole 82, and a third-stage inner hole 83. The front yoke sleeve 8 ...

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Abstract

The invention provides an electromagnet which comprises a shell (5), a framework (6), a front yoke sleeve (8), a back yoke sleeve (10) and a magnetic core (11), wherein the shell is fixedly connected with the front yoke sleeve (8); a coil (4) is wound in a die cavity of the framework (6); the back yoke sleeve (10) is installed in an inner hole in the framework (6); the magnetic core (11) is provided with a plurality of guide grooves (111) distributed around the magnetic core (11); ball bodies (12) are installed in the guide grooves (111); and the magnetic core moves relative to the back yoke sleeve (10) through the ball bodies (12). The ball bodies form the bearing points for the motion of the magnetic core, the magnetic core does not directly contact the back yoke sleeve or guide sleeves, and rolling friction is formed due to the contact of the ball bodies, thereby lowering the motion resistance of the magnetic core, enhancing the motion sensitivity and motion stability of the magnetic core, and effectively enhancing the response speed and control stability of the electromagnet.

Description

Technical field [0001] The invention relates to the technical field of electromagnets, in particular to an electromagnet applied to a central control valve of an engine variable cam timing system. Background technique [0002] There are mainly two types of control valves in the existing engine variable cam timing system: side-mounted control valves and center-mounted control valves. Among them, the side-mounted control valve is widely used, and the center-mounted control valve is a technical upgrade on the side-mounted control valve. [0003] Compared with the side-mounted control valve, the center-mounted control valve has the following advantages: (1) The valve body part of the center-mounted control valve can be closer to the phaser, so that the control oil circuit is shorter. Therefore, its It is better than the side-mounted control valve in terms of response speed and control stability. (2) Since the valve body of the central control valve directly replaces the installation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F7/121H01F7/126F16K31/06
CPCF16K31/06H01F7/121H01F7/126
Inventor 谭建伟向明朗赵敬刚张扬胡胜龙刘健王艳
Owner MIANYANG FULIN PRECISION MACHINING