Diaphragm assembly of swing arm valve

Abstract

The utility model discloses a diaphragm assembly of a swing arm valve. The diaphragm assembly aims to overcome the defect that a rubber part on an existing diaphragm assembly is prone to falling off. The diaphragm comprises a diaphragm framework and diaphragm rubber, the diaphragm framework comprises a framework main body and framework extending blocks located on the two sides of the framework main body in the width direction, and the framework main body is provided with a glue injection hole penetrating through the framework main body in the height direction and communicating holes penetrating through the glue injection hole to be communicated with the front ends and the rear ends of the framework extending blocks. The diaphragm rubber is formed outside the rubber injection hole, the communicating hole and the framework extending block; the diaphragm rubber extends upwards to the top face of the framework extending block, and the diaphragm rubber extends downwards to the bottom of the framework extending block and extends outwards to form a skirt edge. The diaphragm rubber and the diaphragm framework are fully combined by adjusting the shape of the diaphragm framework, and the diaphragm rubber is not easy to separate.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valves, and more specifically, to a diaphragm assembly for a rocker arm valve. Background Technology

[0002] A rocker arm solenoid valve is a type of valve that controls the hydraulic circuit electromagnetically. The key component of a rocker arm solenoid valve is its diaphragm assembly, which is rotatably connected to the solenoid valve via a connecting pin. The solenoid valve generates a magnetic field through helically arranged wires, driving an armature. The armature then pushes the diaphragm assembly to rotate around the connecting pin. The diaphragm assembly moves in a seesaw-like manner, opening or closing the outlets at both ends of the "seesaw." Due to the characteristics of the diaphragm assembly, when one outlet is open, the other is closed, thus achieving the switching of the hydraulic circuit.

[0003] The quality of the diaphragm assembly is a key factor in the solenoid valve. The diaphragm assembly is made by rubber-coating the frame, and the rubber material is plastically flowed to fill the cavity under heat and pressure. After a certain period of time, vulcanization is completed, followed by demolding and cleaning of burrs to obtain the desired product.

[0004] The rubber part of the finished diaphragm assembly is easy to detach. To prevent the rubber diaphragm from detaching, glue is usually added between the skeleton and the diaphragm during the molding process. This will cause the glue attached to the rubber diaphragm to come into contact with the medium. In some industries (such as the medical industry), the glue may also dissolve in the circulating medium, affecting its use and causing reagent deterioration, inaccurate measurement results, etc. Summary of the Invention

[0005] This invention overcomes the shortcomings of existing diaphragm assemblies where the rubber parts are prone to detachment, and provides a diaphragm assembly for a rocker arm valve that enables a reliable connection between the frame and the rubber parts.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A diaphragm assembly for a rocker arm valve includes a diaphragm skeleton and a diaphragm rubber. The diaphragm skeleton includes a skeleton body and skeleton extension blocks located on both sides of the skeleton body in the width direction. The skeleton body has an injection hole that extends through the skeleton body in the height direction and a connecting hole that passes through the injection hole and connects to the front and rear ends of the skeleton extension blocks. The diaphragm rubber is formed outside the injection hole, the connecting hole, and the skeleton extension blocks. The diaphragm rubber extends upward to the top surface of the skeleton extension blocks and downward to the bottom of the skeleton extension blocks, and extends outward to form a skirt.

[0008] The connection between the diaphragm rubber and the diaphragm skeleton includes a columnar portion formed in the injection hole and the connecting hole, and a wrapping portion that wraps around the skeleton protruding block portion, wherein the wrapping portion extends upward to the top of the skeleton protruding block. This method makes the rubber portion on the diaphragm assembly less prone to detachment.

[0009] Two symmetrical, through-hole injection ports are designed for injecting rubber material, ensuring that the adhesive evenly fills the gaps between the skeleton and the diaphragm. Through connecting holes, the liquid rubber wraps around the outside of the skeleton protruding from the block, connecting the inside and outside of the skeleton and enhancing the physical bonding strength between the rubber and the skeleton.

[0010] Preferably, the top portion of the skeleton protrusion block protrudes upward to form a mating boss, and the height of the diaphragm rubber is flush with the mating boss. The top is designed with a flat mating surface, which facilitates precise assembly with other mechanical components.

[0011] Preferably, the sidewall of the skeleton protrusion block has several protrusions, the distance from the protrusions to the sidewall of the skeleton protrusion block being the same as the thickness of the diaphragm rubber. The protrusions further improve the connection reliability between the diaphragm skeleton and the diaphragm rubber. The protrusions also act as grippers to improve the gripping force on the diaphragm rubber.

[0012] Preferably, the bump is positioned around the connecting hole. Positioning the bump near the connecting hole allows for sufficient fluidity in the vicinity, preventing porosity defects caused by the bump.

[0013] Preferably, the edges where the protrusion contacts the diaphragm rubber are rounded. This structure prevents scratches on the diaphragm rubber when the diaphragm assembly is subjected to tensile forces.

[0014] Preferably, the skirt edge has closed, pre-set pleats around the diaphragm frame. These pre-set pleats improve the fatigue resistance of the diaphragm rubber.

[0015] Preferably, the diaphragm rubber has protruding sealing plugs at symmetrical positions at the bottom of the skeleton body, and the skeleton body has corresponding grooves. The diaphragm rubber forms a plug with an integral structure with the sealing plugs according to the grooves. The plugs maintain a stable connection between the diaphragm rubber and the skeleton body, and the sealing plugs are used for sealing.

[0016] Preferably, the main body of the skeleton is in the shape of an inverted T, and the two skeleton protrusions are respectively connected to the corners of the main body of the skeleton. The thickness of the diaphragm skeleton in the depth direction is greater than the thickness of the skeleton protrusions, and the diaphragm rubber is flush with the side wall of the main body of the skeleton.

[0017] Preferably, the axial direction of the connecting hole is along the depth direction. The rubber at the connecting hole and the injection hole is cross-shaped, which can improve the bonding force between the diaphragm skeleton and the diaphragm rubber.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By adjusting the shape of the diaphragm skeleton, the diaphragm rubber is fully bonded to the diaphragm skeleton, making it less likely for the diaphragm rubber to detach. Attached Figure Description

[0020] Figure 1 This is an isometric drawing of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a front view of the skeleton of this utility model;

[0023] Figure 4 This is an axonometric view of the skeleton of this utility model;

[0024] Figure 5 This is a cross-sectional view of the skeleton of this utility model;

[0025] Figure 6 and Figure 7 These are isometric views of the diaphragm rubber of this utility model at different angles;

[0026] In the picture:

[0027] 1. Diaphragm skeleton, 2. Diaphragm rubber, 3. Skeleton body, 4. Glue injection hole, 5. Connecting hole, 6. Skirt, 7. Matching boss, 8. Protrusion, 9. Preset pleat, 10. Sealing plug, 11. Column groove, 12. Plug, 13. Detailed Implementation

[0028] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] In the present disclosure, terms such as "fixed connection", "connected", "joined" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in this field, the specific meanings of the above terms in the present disclosure can be determined according to specific circumstances, and should not be construed as a limitation to the present disclosure.

[0032] Embodiment:

[0033] A diaphragm assembly of a swing arm valve, referring to Figure 1 and Figure 2 as shown, includes a diaphragm skeleton 1 and a diaphragm rubber 2. Among them, the diaphragm skeleton 1 includes a skeleton main body 3 and skeleton extension blocks 4 located on both sides in the width direction of the skeleton main body 3.

[0034] Referring to Figure 3 、 Figure 4 and Figure 5 as shown, the skeleton main body 3 is in an inverted T shape, and the two skeleton extension blocks 4 are respectively connected to the corners of the skeleton main body 3. The thickness of the diaphragm skeleton 1 in the depth direction is greater than the thickness of the skeleton extension blocks 4. The top part of the skeleton extension blocks 4 protrudes upward to form a mating boss 8. A plurality of protrusions 9 protrude from the side walls of the skeleton extension blocks 4, and the protrusions 9 are arranged around the communication holes 6. Among them, the edges of the protrusions 9 that are in contact with the diaphragm rubber 2 are provided with rounded corners. This structure can avoid scratching the diaphragm rubber 2 when the diaphragm assembly bears a pulling force.

[0035] The function of the protrusions 9 is to arrange the protrusions 9 near the communication holes 6, and utilize the sufficient fluidity near the communication holes 6 to avoid air hole defects caused by the protrusions 9.

[0036] The skeleton main body 3 is provided with a glue injection hole 5 penetrating in the height direction and a communication hole 6 extending through the glue injection hole 5 to the front and rear ends of the skeleton extension blocks 4. The axial direction of the communication hole 6 is arranged in the depth direction. The glue injection hole 5 and the communication hole 6 are arranged in a cross shape.

[0037] The diaphragm rubber 2 is formed outside the glue injection hole 5, the communication hole 6 and the skeleton extension blocks 4; the diaphragm rubber 2 extends upward to the top surface of the skeleton extension blocks 4, and the diaphragm rubber 2 extends downward to the bottom of the skeleton extension blocks 4 and extends outward to form a skirt 7.

[0038] The skirt 7 is provided with a closed preset fold 10 around the diaphragm skeleton 1. The anti-fatigue property of the diaphragm rubber 2 is improved through the preset fold 10. The rubber at the communication hole 6 and the glue injection hole 5 is in a cross shape, which can improve the bonding force between the diaphragm skeleton 1 and the diaphragm rubber 2.

[0039] Referring to Figure 6 and Figure 7As shown, the connection between the diaphragm rubber 2 and the diaphragm skeleton 1 includes a columnar portion formed in the injection hole 5 and the connecting hole 6, and a wrapping portion that wraps around the skeleton protrusion block 4. The wrapping portion extends upwards to the top of the skeleton protrusion block 4. This design prevents the rubber portion on the diaphragm assembly from easily detaching. The height of the diaphragm rubber 2 is flush with the mating boss 8. The flat mating surface at the top facilitates precise assembly with other mechanical components.

[0040] Two vertically penetrating injection ports are symmetrically arranged on the skeleton body 3. These ports are used to inject rubber material, ensuring that the adhesive evenly fills the gap between the skeleton and the diaphragm. Through the connecting hole 6, the liquid rubber surrounds the outer side of the skeleton protruding from the block 4, connecting the inside and outside of the skeleton and enhancing the physical bonding strength between the rubber and the skeleton.

[0041] The height of the diaphragm rubber 2 is flush with the mating boss 8. The top is designed with a flat mating surface for precise assembly with other mechanical components. The distance from the protrusion 9 to the side wall of the skeleton protrusion block 4 is the same as the thickness of the diaphragm rubber 2. The protrusion 9 further improves the connection reliability between the diaphragm skeleton 1 and the diaphragm rubber 2. The protrusion 9 acts as a gripper to increase the gripping force on the diaphragm rubber 2. The diaphragm rubber 2 is flush with the side wall of the skeleton body 3.

[0042] The diaphragm rubber 2 has a protruding sealing plug 11 at a symmetrical position at the bottom of the skeleton body 3, and the skeleton body 3 has a groove 12 at a corresponding position. The diaphragm rubber 2 forms a plug 13 integrally with the sealing plug 11 according to the groove 12. The plug 13 keeps the connection between the diaphragm rubber 2 and the skeleton body 3 stable, and the sealing plug 11 is used for sealing.

[0043] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A diaphragm assembly for a rocker arm valve, characterized in that, The device includes a diaphragm skeleton and a diaphragm rubber. The diaphragm skeleton includes a skeleton body and skeleton extension blocks located on both sides of the skeleton body in the width direction. The skeleton body has an injection hole that runs through it in the height direction and a connecting hole that passes through the injection hole and connects to the front and rear ends of the skeleton extension blocks. The diaphragm rubber is formed outside the injection hole, the connecting hole, and the skeleton extension blocks. The diaphragm rubber extends upward to the top surface of the skeleton extension blocks and downward to the bottom of the skeleton extension blocks, and extends outward to form a skirt.

2. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The top portion of the skeleton protruding block protrudes upward to form a mating boss, and the height of the diaphragm rubber is flush with the mating boss.

3. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The sidewall of the skeleton protruding block has several protrusions, and the distance from the protrusions to the sidewall of the skeleton protruding block is the same as the thickness of the diaphragm rubber.

4. The diaphragm assembly of a rocker arm valve according to claim 3, characterized in that, The protrusion is located around the connecting hole.

5. A diaphragm assembly for a rocker arm valve according to claim 3 or 4, characterized in that, The edges where the protrusions meet the diaphragm rubber are rounded.

6. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The skirt edge has pre-set closed pleats around the membrane skeleton.

7. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The diaphragm rubber has protruding sealing plugs at symmetrical positions at the bottom of the skeleton body, and the skeleton body has grooves at corresponding positions. The diaphragm rubber forms a plug with an integral structure with the sealing plugs according to the grooves.

8. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The main body of the skeleton is inverted T-shaped, with two skeleton protrusions connected to the corners of the main body of the skeleton. The thickness of the diaphragm skeleton in the depth direction is greater than the thickness of the skeleton protrusions, and the diaphragm rubber is flush with the sidewall of the main body of the skeleton.

9. The diaphragm assembly of a rocker arm valve according to claim 1, characterized in that, The axial direction of the connecting hole is set along the depth direction.

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