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Electromagnetic valve

A solenoid valve and valve cavity technology, applied in the field of solenoid valves, can solve problems such as larger overall size, increased necessary force, and deterioration of flow characteristics of solenoid valves

Active Publication Date: 2017-05-10
HAMANAKODENSO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the force necessary to drive the shaft and cause the fluid to flow from the inflow channel to the discharge channel via the communication channel may increase
To increase the force used to drive the shaft, the way to increase the magnetic force is to increase the size of the solenoid part, but in this case the overall size of the solenoid valve may become larger
In addition, if the cross-sectional area of ​​the communication passage is reduced, the flow characteristics of the solenoid valve may deteriorate

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0015] will refer to Figure 1 to Figure 3 The solenoid valve 1 according to the first embodiment is explained. figure 1 Shown is an overall conventional structure of a solenoid valve 1 installed, for example, in an automatic transmission system of an automobile. Solenoid valve 1 can switch the oil passage to control the shift gearbox. The solenoid valve 1 includes a flow passage control portion housed in a housing 2 and an electromagnetic solenoid portion 3 integrally connected to the flow passage control portion.

[0016] The flow passage control part includes a tubular housing 2 and extends in the axial direction of an attachment hole 52 . The end tubular portion 2a at one end of the housing 2 is fitted and fixed to a mounting hole 52 forming a cylindrical passage in the passage forming member 5 within the automatic transmission or adjacent to the automatic transmission. The passage forming member 5 forms an upstream passage 51 which is an oil inflow passage through whic...

no. 2 example

[0044] will refer to Figure 4A second embodiment of the present invention will be described. In the second embodiment, components assigned with the same reference numerals in the drawings related to the first embodiment and components not described in detail are similar to those in the first embodiment and function in the same manner as the first embodiment. functions and effects. In the second embodiment, only components different from those of the first embodiment are described.

[0045] Such as Figure 4 As shown, the valve element 107 of the second embodiment includes a downstream end portion 173 comprising a pressure receiving portion in the downstream end of the valve element 107 in contact with the valve seat 24 . The pressure receiving portion has a shape with a diameter size gradually decreasing in a downstream direction of the flow of the working fluid. The diameter dimension R4 of the pressure receiving portion portion in contact with the valve seat 24 is small...

no. 3 example

[0047] will refer to Figure 5 A third embodiment of the contents of the present invention will be described. In the third embodiment, components assigned with the same reference numerals in the drawings related to the first embodiment and components not described in detail are similar to the components in the first embodiment and perform the same function as the first embodiment. functions and effects. In the third embodiment, only components different from those of the first embodiment are described.

[0048] Such as Figure 5 As shown, the valve element 207 of the third embodiment includes a downstream end portion 273 projecting radially outwardly from the outer surface of the tubular wall portion 72 . The diameter 273 of the downstream end portion 273 is larger than the diameter of the portion of the tubular wall portion 72 located on the upstream side of the downstream end portion 273 . In other words, the diameter dimension R6 of the downstream end portion 273 is lar...

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PUM

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Abstract

An electromagnetic valve includes a valve compartment inside an end tubular portion (2a) of a housing (2), a valve element (1, 107, 207) provided in the valve compartment and movable to open or close a valve port (25), a guide member slidably supporting the valve element, a shaft (4) contacting an end of the valve element to move the valve element, and a pressure release passage (13) extending through a part of the end of the valve element which does not contact the shaft. An inner compartment (23) of the valve element communicates with the valve port through the pressure release passage in a closed state of the valve element.

Description

technical field [0001] The content of this specification relates to a solenoid valve used as a device for switching a flow path in a working fluid passage. Background technique [0002] A solenoid valve disclosed in a patent document (JP H4-331881 A) is a device capable of switching a flow path through which a working fluid flows. According to the solenoid valve of this patent document, when the solenoid valve is not energized, due to the pressure exerted by the working fluid flowing out from the inflow channel, the ball valve presses the valve seat and closes the solenoid valve, and at the same time, the discharge valve portion of the shaft keeps the drain port plate at valve open state. When the solenoid valve is energized, the electromagnetic force of the solenoid part moves the shaft towards the ball valve and presses the ball valve. Therefore, the ball valve leaves the valve plate, and the solenoid valve is opened. The drain valve portion of the shaft closes the drai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06F16K27/02F16K1/36
CPCF16K1/36F16K27/029F16K31/0655F16H2061/026F16K3/246F16H61/0251F16K31/0675F16K31/0686
Inventor 藁科智昭石田高生菅野正
Owner HAMANAKODENSO
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