Opening and closing assembly and electromagnetic valve

Abstract

The opening and closing assembly comprises a support and a membrane, the membrane comprises an annular outer ring part, an inner ring part located at the axial upper end of the outer ring part and a tubular transition part connecting the inner ring part and the outer ring part, a first through hole is formed in the center of the inner ring part, a through water passing hole is formed in the axis of the support, and the tubular transition part is communicated with the first through hole. The diaphragm is characterized in that the axial upper end of the inner ring part protrudes to form a hollow columnar water inlet part communicated with a first through hole, the support is detachably buckled in the diaphragm, the upper end face of the support is lower than the upper end face of the diaphragm, and a water passing hole of the support is communicated with the water inlet part in an aligned mode. According to the opening and closing assembly, the structure of the diaphragm and the structure of the support are optimized, so that impact on external parts during working of the opening and closing assembly is reduced, and the opening and closing assembly is simple in overall structure and reliable in assembly. The improved opening and closing assembly is convenient to assemble, and meanwhile noise of a product using the opening and closing assembly can be reduced.

Description

Technical Field

[0001] This utility model relates to an opening and closing component, and more particularly to a solenoid valve using the opening and closing component, which is classified as F16K 7 / 12 by IPC. Background Technology

[0002] The opening and closing components of existing solenoid valves typically include a bracket and a rubber diaphragm fitted onto the bracket. (See attached instruction manual.) Figure 1 As shown, the bracket has a columnar water pipe along its axis. During operation, this water pipe is prone to impacting the inner wall of the valve cover, generating noise. In addition, the assembly of opening and closing components in the prior art mostly relies on an integrated structure or elastic deformation fit, such as the fixed seat and guide rod fit described in CN216789301U, which has the problems of inconvenient assembly and low degree of automation.

[0003] This utility model aims to solve the above-mentioned technical defects by optimizing the structure to reduce noise and improve assembly reliability. Relevant terminology and common knowledge can be found in the *Mechanical Engineering Handbook*, *Electrical Engineering Handbook*, national standard GB14536.9 *Special Requirements (including mechanical requirements) for Electric Water Valves in Household and Similar Electric Automatic Controllers*, GB / T21465-2008 *Valve Terminology*, national light industry standard QB / T1291 *Solenoid Valves for Automatic Washing Machines*, and Chinese Patent Publication CN216789301U, etc. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] An opening and closing assembly includes a support and a diaphragm. The diaphragm includes an annular outer ring, an inner ring located at the axial upper end of the outer ring, and a tubular transition portion connecting the inner ring and the outer ring. The inner ring has a through first hole at its center, and the support has a through water passage at its axial center. The inner ring has a hollow cylindrical water inlet protruding from its axial upper end, connected to the first through hole. The support is detachably fastened to the diaphragm, and the upper end face of the support is lower than the upper end face of the diaphragm. Its water passage is directly opposite and connected to the water inlet.

[0006] The opening and closing assembly of this invention, through optimized diaphragm and support structure, helps reduce impact on external parts during operation, and its overall structure is simple and reliable to assemble. The improved opening and closing assembly of this invention facilitates assembly while also reducing noise in products using this assembly.

[0007] Furthermore, the bracket is detachably fastened to the diaphragm, the inner wall of the first through hole is recessed to form an inverted buckle, and the end of the bracket facing the inner ring has an axially protruding annular first boss that matches the inverted buckle. The bracket is fastened to the first through hole of the diaphragm through the first boss.

[0008] Furthermore, the upper axial end face of the inner ring protrudes radially outward from the water inlet with a boss, and the axial end face of the boss has several ribs that are connected to the outer wall of the water inlet.

[0009] Furthermore, the inner ring portion has several axially recessed inner ring grooves on one side inside the transition portion, and the inner ring grooves have a through second through hole in the axial direction. The end face of the bracket facing the inner ring portion has an annular second boss with a diameter smaller than that of the inner ring portion in the axial direction. The bracket has several concave guide grooves on the radial outer surface of its bracket body. In the axial projection, the axial projection of the inner ring groove is at least partially located on the radial outer side of the projection of the second boss.

[0010] This utility model also discloses an electromagnetic valve:

[0011] An electromagnetic valve includes a valve body, a coil assembly fixed on the valve body, a valve cover covering the valve body, and a spring and a movable iron core disposed in the hollow cavity of the valve body, characterized in that: it further includes an opening and closing assembly as claimed in any one of the claims, the opening and closing assembly being axially disposed between the valve body and the valve cover.

[0012] The electromagnetic valve of this invention has the following beneficial effects:

[0013] The embedded design of the water inlet of the opening and closing component and the water passage hole of the bracket reduces water flow impact, and the flow guide channel optimizes the fluid path, significantly reducing noise.

[0014] The detachable snap-on structure improves assembly convenience, while the ribs and second boss enhance structural stability.

[0015] The design of the bracket embedded inside the diaphragm avoids impact noise between rigid components. Attached Figure Description

[0016] Figure 1 This is an axial sectional view of the existing opening and closing assembly;

[0017] Figure 2 This is an axial sectional view of the opening and closing component of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the diaphragm of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the diaphragm of this utility model from another angle;

[0020] Figure 5 This is an axial sectional view of the diaphragm of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the bracket of this utility model;

[0022] Figure 7 This is an axial sectional view of the solenoid valve of this utility model;

[0023] Wherein: 100'-bracket, 200'-diaphragm, 10-opening / closing assembly, 20-valve body, 21-hollow cavity, 30-coil assembly, 40-valve cover, 50-spring, 60-movable iron core, 100-bracket, 110-water passage hole, 120-first boss, 130-second boss, 140-guide groove, 150-bracket body, 200-diaphragm, 210-outer ring, 220-inner ring, 221-first through hole, 222-water inlet, 223-inverted, 224-bore, 225-rib, 226-inner ring groove, 227-second through hole, 230-transition section Detailed Implementation

[0024] This utility model discloses an opening and closing component, see [link / reference]. Figures 2 to 5 The opening and closing assembly 10 includes a bracket 100 and a diaphragm 200. The diaphragm 200 is made of rubber material and includes an annular outer ring portion 210, an inner ring portion 220 located at the axial upper end of the outer ring portion 210, and a tubular transition portion 230 connecting the inner ring portion 220 and the outer ring portion 210. Further, the inner ring portion 220 has a through first hole 221 at its center, and a hollow cylindrical water inlet portion 222 protruding from its axial upper end face and communicating with the first through hole 221. The bracket 100 includes a bracket body 150 adapted to the inner contour of the diaphragm 200, and the bracket body 150 has an axially penetrating water passage hole 110. The bracket 100 of this invention is detachably fastened to the diaphragm 200. After assembly, the upper end face of the bracket 100 is lower than the upper end face of the diaphragm 200, and the water passage hole 110 communicates directly with the water inlet portion 222.

[0025] The opening and closing assembly of this invention, through optimized diaphragm and support structure, helps reduce impact on external parts during operation, and its overall structure is simple and reliable to assemble. The improved opening and closing assembly of this invention facilitates assembly while also reducing noise in products using this assembly.

[0026] Preferably, see Figure 2 , Figure 5 and Figure 6The bracket 100 is detachably fastened to the diaphragm 200. Specifically, the first through hole 221 of the diaphragm 200 has an inverted buckle 223 (specifically an arc-shaped inverted buckle) recessed in its inner wall. The bracket 100 has an annular first boss 120 axially protruding at one end facing the inner ring portion 220, which matches the inverted buckle 223. The bracket 100 is inserted into and fastened to the inverted buckle 223 of the diaphragm 200 through the first boss 120. This design securely fixes the diaphragm to the bracket, facilitating installation while ensuring the connection strength between the two. Of course, as other embodiments, the bracket can also be connected by screws or detachable structures disclosed in mechanical engineering manuals.

[0027] See Figure 3 In this invention, the inner ring portion 220 of the diaphragm 200 has an axial upper end face with a boss 224 protruding radially outward from the water inlet portion 222. The axial end face of this boss 224 also has several ribs 225 that connect to the outer wall of the water inlet portion 222. This diaphragm design enhances the strength of the water inlet portion 222, reduces the swaying amplitude of the water inlet portion 222 during operation, and further reduces impact on equipment using this opening and closing component.

[0028] See Figure 2 , Figure 4 and Figure 6 To allow the liquid to flow more smoothly through the opening and closing assembly during operation and to increase the flow rate of the equipment using the assembly, the inner ring portion 220 of the diaphragm 200 in this invention has several axially recessed inner ring grooves 226 on one side inside the transition portion 230. These inner ring grooves 226 also have a through-hole 227 in the axial direction. The support body 150 of the support 100 has an annular second boss 130 with a diameter smaller than the outer diameter of the inner ring portion 220 protruding from its axial end face facing the inner ring portion 220. Its radially outer surface also has an inwardly recessed guide groove 140. In the axial projection of the opening and closing assembly, the axial projection of the inner ring grooves 226 of the diaphragm 200 is at least partially located radially outside the projection of the second boss 130 of the support 100. Furthermore, to allow the liquid to flow more smoothly through the opening and closing assembly during operation, in the axial projection of the opening and closing assembly, the second through-hole 227 is located radially outside the projection of the second boss 130.

[0029] This utility model also discloses an electromagnetic valve, see Figure 7 The solenoid valve includes an opening / closing assembly 10, a valve body 20, a coil assembly 30 fixed on the valve body 20, a valve cover 40 covering the valve body, and a spring 50 and a movable iron core 60 disposed in the hollow cavity 21 of the valve body. The opening / closing assembly 10 is axially positioned between the valve body 20 and the valve cover 40. This invention, through optimized design of the opening / closing assembly, effectively mitigates the impact between the assembly and the pump cover, achieving noise reduction.

[0030] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. An open-close assembly comprising a support (100) and a diaphragm (200), the diaphragm (200) comprising an annular outer ring portion (210), an inner ring portion (220) located at an axial upper end of the outer ring portion (210), and a tubular transition portion (230) connecting the inner ring portion (220) and the outer ring portion (210), a first through hole (221) being provided in the center of the inner ring portion (220), and a water passage hole (110) being provided in the center of the support (100), characterized in that: The inner ring part (220) has a hollow cylindrical water inlet part (222) with a first through hole (221) at the upper end, the support (100) is detachably buckled in the diaphragm (200), the upper end surface of the support (100) is lower than the upper end surface of the diaphragm (200), and the water passing hole (110) is opposite to the water inlet part (222) and communicates with each other.

2. The opening and closing assembly according to claim 1, characterized in that: The support (100) is detachably buckled in the diaphragm (200), the inner wall of the first through hole (221) is concave to form a reverse buckle (223), one end of the support (100) towards the inner ring part (220) has an annular first boss (120) axially protruding and matched with the reverse buckle (223), and the support (100) is buckled in the first through hole (221) of the diaphragm (200) through the first boss (120).

3. The opening and closing assembly according to claim 1 or 2, characterized in that: The upper end surface of the inner ring part (220) has a boss (224) protruding radially outside the water inlet part (222), and the axial end surface of the boss (224) protrudes several rib strips (225) connected with the outer wall surface of the water inlet part (222).

4. The opening and closing assembly according to claim 1 or 2, characterized in that: The inner ring part (220) has several inner ring part grooves (226) axially concave on one side inside the transition part (230), the axial direction of the inner ring part groove (226) has a second through hole (227) penetrating through, the end surface of the support (100) towards the inner ring part (220) has an annular second boss (130) with a smaller diameter than the inner ring part (220) axially protruding, and the radial outer surface of the support body (150) of the support (100) has several concave flow guide grooves (140) circumferentially arranged; in the axial projection, the axial projection of the inner ring part groove (226) is at least partially located on the radial outer side of the projection of the second boss (130).

5. An electromagnetic valve comprising a valve body (20), a coil assembly (30) fixed to the valve body (20), a valve cover (40) provided on the valve body, and a spring (50) and a movable iron core (60) provided in a hollow cavity (21) of the valve body, characterized in that: The opening and closing assembly of any one of claims 1 to 4 is axially arranged between the valve body (20) and the valve cover (40).

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