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Elastic reset membrane part and water flow induction switch

A technology of elastic reset and water flow sensing, which is applied in the direction of electric switches, electronic switches, electrical components, etc., can solve problems such as stuck, water flow sensing switches cannot send opening and closing commands correctly, and achieve stable and reliable control

Inactive Publication Date: 2017-10-27
NINGBO ZHAOHUA ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the guide assembly composed of the push column and the hard matching sleeve is matched with the installation cavity, the fit gap is small, and when the diaphragm shrinks due to changes in water pressure, the deformation and internal stress caused by extrusion will be uneven, which will cause push The hard matching sleeve on the pressure column is eccentric (slightly twisted) during the expansion and contraction process, causing the hard matching sleeve to press against and contact the inner wall of the installation cavity, forming friction, causing the push column (hard matching sleeve) to be stuck in the installation cavity , causing the water flow sensor switch to fail to send the opening and closing commands correctly

Method used

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  • Elastic reset membrane part and water flow induction switch
  • Elastic reset membrane part and water flow induction switch
  • Elastic reset membrane part and water flow induction switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figures 1 to 6 A water flow sensor switch shown includes: a housing 1, a water inlet 2, and a water outlet 3. The housing includes an upper cover and a main housing, and the mouths of the water inlet 2 and the water outlet 3 are respectively provided with first fast The joint and the second quick joint, the first quick joint and the second quick joint are all composed of a mounting head and a sleeve section; the inner cavity of the main housing is provided with: an installation cavity 7, an elastic reset film 5, and a magnetic block 4; A mounting groove is provided in the cover body for installing the magnetic induction circuit board 6 , and a cover plate for pressing the cover is provided above.

[0030] The magnetic induction circuit board 6 is placed in the installation groove of the upper cover body for the opening and closing of the water flow induction switch. The cover plate is arranged above the upper cover body, and the upper cover body and the main ca...

Embodiment 2

[0040] The fixed edge 51, the deformable membrane 54 and the connecting ring 55 are integrally formed, and are integrally cast and molded by an injection molding machine from silica gel. When 54 is deformed under force, due to the one-piece structure, the other two deformable membranes 54 will be stressed at the same time to achieve the effect of force balance. The fixed edge 51 is fixedly installed in the groove of the housing 1 to play a role of stability , to prevent the deformation film 54 from shifting or swinging during the deformation process, and the connecting ring 55 plays the role of matching the pushing column 53 penetrated into it to connect the hard matching sleeve 5 below.

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Abstract

The invention discloses a water flow induction switch and an elastic reset membrane part. The water flow induction switch comprises a shell, a water inlet, a water outlet, a magnetic block, the elastic reset membrane part and a magnetic induction circuit board; the elastic reset membrane part comprises a plurality of deformation membranes, a pushing and pressing column and a fixed edge; each of the deformation membranes is of a strip-shaped sheet structure; one end of each of the deformation membranes is fixed to the fixed edge, and the other end of the deformation membrane is fixed to the pushing and pressing column; a gap used for disconnecting the continuity between the deformation membranes is formed between the adjacent deformation membranes and can also be used for water flow passing. As the gap used for disconnecting the continuity between the deformation membranes is formed between the adjacent deformation membranes, the deformation of the single deformation membrane is changed into an independent deformation process, namely the deformation of the single deformation membrane cannot affect the deformation of the other deformation membranes, so that the twisting of the pushing and pressing column in the telescopic movement process is prevented, and the situation that the pushing and pressing column is in contact with the inner wall of a mounting cavity to be jammed is avoided, therefore, the sensitivity and the accuracy of the water flow induction switch are improved.

Description

technical field [0001] The invention relates to a water flow induction switch, in particular to an induction switch and an elastic reset membrane used in a water flow pipeline to sense water flow pressure. Background technique [0002] The water flow sensor switch is also a sensor switch that senses the pressure signal of the water flow. When the pressure is bounded by a certain threshold, exceeds a certain threshold or is less than a certain threshold, the sensor circuit board will obtain the corresponding sensor signal, convert and output the electrical signal. [0003] Currently, the patent No. 201320823720.9 discloses a water flow sensor switch, and the invention relates to a sensor switch for a pressure signal in a water pipeline. The water flow sensor switch includes a housing with a water inlet and a water outlet, an elastic reset membrane, a magnetic block and a magnetic induction circuit board; an installation cavity is provided inside the housing, and the water inl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H35/34H03K17/95
CPCH01H35/34H03K17/9505
Inventor 王星照佟勇华
Owner NINGBO ZHAOHUA ENVIRONMENTAL PROTECTION TECH CO LTD