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Fittings with spools and coil springs used therefor

A coil spring and valve core technology, applied in the field of pipe joints, can solve problems such as plastic deformation of coil springs

Active Publication Date: 2022-08-09
NITTO KOHKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the load applied to the coil spring is too large, the coil spring will undergo plastic deformation, etc., so that when the connection of the pipe joint is released, it may no longer be possible to properly apply force to the valve core to the closed position.

Method used

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  • Fittings with spools and coil springs used therefor
  • Fittings with spools and coil springs used therefor
  • Fittings with spools and coil springs used therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The pipe joint 1 according to one embodiment of the present invention is composed of figure 1 Male fitting 10 (valved flow path member) shown and figure 2 The female connectors 30 shown are formed, these male connectors 10 and the female connectors 30 such as image 3 It is detachably connected as shown.

[0042] The male joint 10 includes: a cylindrical body 14 having a fluid passage 12 ; a valve body 16 arranged in the fluid passage 12 ; and a coil spring 18 arranged in the fluid passage 12 between the cylindrical body 14 and the valve body 16 between. A rubber seal ring 20 is attached to the valve body 16 . The spool 16 can be in the closed position ( figure 1 ) and the open position ( image 3 ), the closed position is the position where the seal ring 20 is sealingly engaged with the valve seat portion 22 of the cylindrical body 14 to close the fluid passage 12, and the open position is on the longitudinal axis L of the fluid passage 12 A position where the f...

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PUM

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Abstract

To provide a coil spring for urging a valve body that can more reliably prevent excessive deformation when a large load is applied. The coil spring is arranged between the cylindrical body and the valve body in the fluid passage, and urges the valve body toward the closed position. The coil spring includes a valve support portion that supports the valve body, a fixed portion fixed to the inner peripheral surface of the fluid passage, a telescopic portion extending from the fixed portion, and a connection portion between the telescopic portion and the valve support portion. The connecting portion includes a first portion that is bent so as to pass radially outward of the end wrap portion of the telescopic portion, a second portion that passes through the center of the valve support portion, and a third portion that is bent and extended so as to overlap the first portion. part, and a fourth part extending to the valve support. When the coil spring is compressed, the valve support portion is supported by the expansion and contraction portion via the connection portion.

Description

technical field [0001] The present invention relates to a pipe joint for opening and closing a fluid passage by a valve element, and a coil spring for urging the valve element toward a closed position in the pipe joint. Background technique [0002] Usually, such a pipe joint is composed of a male joint and a female joint that are detachably connected to each other, and when these are connected to each other, the valve body provided in the male joint is pressed and opened by the female joint, so that the Fluid can circulate within the fitting. Specifically, a valve body and a coil spring that urges the valve body to close the fluid passage by pressing the valve body against a valve seat provided on a peripheral wall of the fluid passage are provided in the fluid passage of the male joint. In addition, the female joint has a valve body pressing portion, and the valve body is pressed to the open position by the valve body pressing portion at the time of connection. In the pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F1/06F16F1/12F16L37/23F16L37/32
CPCF16L37/23F16F1/06F16K15/026F16K2200/3053F16L37/34F16F1/123F16F1/125F16F1/12F16L37/32F16L37/22F16L37/46F16F1/122
Inventor 和田章裕
Owner NITTO KOHKI CO LTD