A wave-creased structure pressure-stabilizing diaphragm

Abstract

The utility model provides a kind of wave wrinkle structure's pressure-stabilizing diaphragm, including circular diaphragm body, the outer edge of diaphragm body is equipped with the arc sealing strip of upward bulge, the center of diaphragm body is equipped with the sealing cap of upward bulge, the area between the arc sealing strip and the sealing cap on diaphragm body is equipped with easy-to-deform guiding structure, and the easy-to-deform guiding structure is the wave-shaped wrinkle of upward integral bulge or downward integral recess.This utility model sets wave-shaped wrinkle as easy-to-deform guiding structure in the deformation area of diaphragm body, effectively guides diaphragm to deform evenly and smoothly along preset path, significantly disperses local stress, thereby greatly improves the fatigue resistance and service life of diaphragm, while enhancing the sensitivity and reliability of pressure-stabilizing valve action.

Description

Technical Field

[0001] This utility model relates to a voltage-stabilizing diaphragm with a wave-like pleated structure. Background Technology

[0002] The inlet or outlet valve of a toilet is a key component, its core function being to reliably control the flow of water. The diaphragm is the core element for achieving this function. The diaphragm deforms due to the pressure difference between the upper and lower chambers, thereby opening or closing the water passage. Most existing toilet diaphragms are simple rubber sheet structures, or have basic sealing structures in the center or edges. These diaphragms have the following significant drawbacks in actual use: First, under frequent water pressure, the deformation area of ​​the diaphragm is not fixed, easily leading to repeated bending in a certain localized area, causing stress concentration, fatigue cracks, or even tearing, resulting in a shorter service life. Second, impurities such as sand and rust in the water can easily enter the sealing surface between the diaphragm and the valve seat, causing poor sealing and continuous leakage. Furthermore, when the toilet is not used for a long time, the rubber sealing surface of the diaphragm can easily stick to the valve seat (usually made of plastic or metal), resulting in excessive opening force or slow operation when used again, affecting the user experience and reliability. While some solutions attempt to add separate filters or change material hardness, these often result in complex structures, increased assembly processes and costs, and fail to fundamentally improve the diaphragm's fatigue resistance and anti-adhesion properties. Therefore, there is an urgent need for a rationally designed voltage-stabilizing diaphragm that can simultaneously improve durability, sealing reliability, and interference resistance. Utility Model Content

[0003] This invention provides a voltage-stabilizing diaphragm with a wave-like pleated structure, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows: A voltage stabilizing diaphragm with a wave-like pleated structure includes a circular diaphragm body, an upwardly protruding arc-shaped sealing strip on the outer edge of the diaphragm body, an upwardly protruding sealing cap at the center of the diaphragm body, and a deformable guide structure in the area between the arc-shaped sealing strip and the sealing cap on the diaphragm body. The deformable guide structure is a wave-like pleat that is integrally protruding upward or integrally recessed downward.

[0005] The beneficial effects of this utility model are: (1) By setting wavy folds in the deformation area of ​​the diaphragm body as an easily deformable guide structure, this utility model effectively guides the diaphragm to deform evenly and smoothly along a preset path, significantly dispersing local stress, thereby greatly improving the fatigue resistance and service life of the diaphragm, while enhancing the sensitivity and reliability of the pressure regulating valve. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0007] Figure 1 This is the front view of this utility model.

[0008] Figure 2 This is a cross-sectional view of the present invention.

[0009] Explanation of icon numbers: 10. Diaphragm body; 20. Sealing strip; 30. Micro-protrusions; 40. Sealing cap; 50. Wavy pleats; 60. Circular groove; 70. Circular hole. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0011] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0012] Reference Figure 1-2 As shown, a wave-shaped, pleated voltage-stabilizing diaphragm includes a circular diaphragm body 10. The diaphragm body 10 is preferably made of a water-resistant, aging-resistant, and highly elastic rubber material (such as EPDM).

[0013] The outer edge of the diaphragm body 10 is provided with an upwardly protruding arc-shaped sealing strip 20, and the center of the diaphragm body 10 is provided with an upwardly protruding sealing cap 40. The area between the arc-shaped sealing strip 20 and the sealing cap 40 on the diaphragm body 10 is provided with a deformable guide structure. The deformable guide structure is an integrally upwardly protruding or downwardly recessed wavy pleat 50. The wavy pleat 50 is a concentric ring of multiple corrugations. The wavy pleat 50 is a series of radial corrugations radiating from the edge of the sealing cap 40 to the inner side of the arc-shaped sealing strip 20. The wall thickness of the wavy pleat 50 is thinner than the wall thickness of other areas of the diaphragm body 10 except for the pleats.

[0014] Specifically, by setting the corrugated pleats 50, it is equivalent to pre-setting an "elastic hinge" in this area. When the water pressure changes, the deformation of the diaphragm will preferentially and concentrate at the corrugated areas with good elasticity, thereby guiding the diaphragm to move smoothly and steadily along the preset path, avoiding disorderly bending. At the same time, the corrugated pleats 50 effectively disperse the stress that was originally concentrated on a single bending line to the entire corrugated ring, greatly reducing the local maximum stress value, thereby significantly improving the fatigue resistance of the diaphragm and extending its service life. Furthermore, the wall thickness of the corrugated pleats 50 is designed to be thinner than the wall thickness of other areas of the diaphragm body 10. This design further reduces the bending stiffness of the corrugated area, making the opening and closing action of the diaphragm more sensitive and responding faster to changes in water pressure, which helps to improve the pressure stabilization and switching performance of the valve.

[0015] The top sealing surface of the arc-shaped sealing strip 20 is provided with an anti-adhesion structure, which consists of uniformly distributed micro-protrusions 30; the height of the micro-protrusions 30 is 0.05mm to 0.2mm. Specifically, after setting the micro-protrusions 30, the actual contact area between the diaphragm and the valve seat is significantly reduced, changing from continuous surface contact to discrete point contact. This ensures that an effective seal can be formed under normal operating water pressure, while greatly reducing the strength and probability of adhesion. When opening is required, the water pressure can easily overcome the small adhesion force generated by the micro-contact points, ensuring the reliability of the operation.

[0016] Furthermore, the cross-sectional shape of the micro-protrusion 30 is hemispherical, frustum conical, or cylindrical. In one embodiment, a hemispherical shape is preferred, as the hemispherical protrusion provides uniform stress distribution under pressure, good elastic recovery, a soft yet effective line seal when in contact with the valve seat, and is not easily worn. It should be noted that other shapes are also applicable, but a hemispherical shape is preferred in this case. The actual choice can be set according to specific needs, and this case does not impose too many restrictions.

[0017] Furthermore, the height of the micro-protrusions 30 is preferably controlled between 0.05mm and 0.2mm. If the height is below 0.05mm, the anti-adhesion effect is not significant; if the height is above 0.2mm, it may affect the reliability of the main seal, requiring higher water pressure to achieve a seal. Therefore, within this range, an effective seal is ensured under normal operating water pressure.

[0018] An annular groove is provided on the inner circumference of the arc-shaped sealing strip 20, and an annular filter screen made of corrosion-resistant engineering plastic is detachably embedded in the annular groove. This annular filter screen is located at the inlet, the essential path for water flow into the working chamber above the membrane, forming the first line of defense. All water must pass through this filter screen before acting on the membrane, effectively intercepting impurities and protecting the critical sealing surfaces. Furthermore, the filter screen is designed to be detachable, facilitating regular cleaning and maintenance, ensuring long-term effective filtration.

[0019] The sealing cap 40 includes an upwardly protruding truncated cone, with an umbrella-shaped protective cover extending outwards from the top of the truncated cone. Inside the truncated cone of the sealing cap 40 is a circular groove 60. A circular hole 70 is formed at the center of the diaphragm body 10 corresponding to the circular groove 60, and the diameter of the circular groove 60 is larger than the diameter of the circular hole 70. During assembly, the protruding ring on the valve core can be inserted through the circular hole 70 and locked into the circular groove 60, achieving a simple, springless installation and reducing the number of parts.

[0020] Specifically, the umbrella-shaped protective cover, like an umbrella canopy, covers the top of the circular hole 70, which can prevent large particles of impurities that may enter from the direction of the valve core from directly impacting the sealing parts of the circular hole 70 and the circular groove 60. At the same time, it also guides the water flow, making the water flow more smoothly into the area of ​​the circular groove 60, reducing turbulence and vibration.

[0021] The arc-shaped sealing strip 20, the sealing cap 40, and the wavy pleats 50 are integrally formed with the diaphragm body 10. The arc-shaped sealing strip 20 is a key structure for forming the main seal between the diaphragm body 10 and the valve body cover, thereby eliminating potential leakage points and simplifying the manufacturing process. The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A voltage-stabilizing diaphragm with a corrugated structure, comprising a circular diaphragm body (10), wherein the outer edge of the diaphragm body (10) is provided with an upwardly protruding arc-shaped sealing strip (20), and the center of the diaphragm body (10) is provided with an upwardly protruding sealing cap (40), characterized in that: The diaphragm body (10) is provided with a deformable guide structure in the area between the arc-shaped sealing strip (20) and the sealing cap (40). The deformable guide structure is a wave-shaped pleat (50) that is integrally raised upward or integrally recessed downward.

2. The voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The wave-shaped folds (50) are multiple concentric ring-shaped wavy lines.

3. The voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The wavy folds (50) are multiple radial ripples radiating from the edge of the sealing cap (40) toward the inner side of the arc-shaped sealing strip (20).

4. The voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The wall thickness of the wavy folds (50) is thinner than the wall thickness of the membrane body (10) in other areas besides the folds.

5. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The top sealing surface of the arc-shaped sealing strip (20) is provided with an anti-adhesion structure, which consists of uniformly distributed tiny protrusions (30).

6. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 5, characterized in that, The height of the micro-bumps (30) is 0.05 mm to 0.2 mm.

7. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The sealing cap (40) includes an upwardly protruding truncated cone, the top of which is provided with an umbrella-shaped protective cover extending in all directions.

8. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that, The inner circumference of the arc-shaped sealing strip (20) is provided with an annular groove, and an annular filter screen made of corrosion-resistant engineering plastic is detachably embedded in the annular groove.

9. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that: The sealing cap (40) has a circular groove (60) inside its truncated cone. A circular hole (70) is opened at the center of the diaphragm body (10) corresponding to the circular groove (60). The diameter of the circular groove (60) is larger than the diameter of the circular hole (70).

10. A voltage-stabilizing diaphragm with a wave-like pleated structure according to claim 1, characterized in that: The arc-shaped sealing strip (20), the sealing cap (40), and the wavy pleats (50) are integrally formed with the diaphragm body (10).

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