Movable iron core assembly of isolating valve
By disassembling the dynamic core components and using riveting and punching pressing processes, the problems of low production efficiency and material waste caused by the complex structure of the dynamic core components in the prior art are solved, and more efficient production and more stable products are achieved.
Patent Information
- Application Number
- CN202420553287.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The dynamic core components of existing oil tank isolation valves have problems such as waste of materials, low production efficiency and poor adhesion effect caused by complex structures in processing and production.
The moving iron core assembly is split into two parts, and the sealing seat is connected by rivet pressing, and the sealing seat is made by punch stamping, and the rubber is connected by plastic wrap, simplifying the structure to improve production efficiency and reduce costs.
It effectively reduces production costs, improves production efficiency, improves product stability and pass rate, reduces glue leakage and glue spills, and ensures high-strength anti-detachment capability.
Smart Images
Figure CN222185963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an accessory on an automobile oil tank, in particular to a moving iron core component of an oil tank isolation valve. Background Art
[0002] The fuel tank isolation valve is mainly used in hybrid vehicles and models with active pressure control functions for fuel tanks. Take hybrid vehicles as an example. When hybrid vehicles are in electric mode for a long time, the carbon canister can only absorb oil and gas without desorption function. The adsorption function of the carbon canister is very easy to reach saturation, and the carbon canister fails, so that the oil and gas are directly discharged into the atmosphere without filtration. The fuel tank isolation valve is a normally closed solenoid valve. When the hybrid vehicle is in electric mode, the electromagnetic part of the isolation valve is closed. If there is high or low pressure in the fuel tank at this time, the auxiliary valve part is opened to release pressure or replenish gas.
[0003] The movable iron core assembly of the prior art oil tank isolation valve has the following defects in actual use:
[0004] (I) The oil tank isolation valve has a moving iron core component (such as Figure 1 As shown). The component consists of a moving iron core 1 and rubber 2 that wraps the moving iron core. The original moving iron core has a complex structure, one end of which is flat, and can effectively seal the internal vent of the valve with the rubber. In order to ensure that the flow rate of the oil tank isolation valve meets the technical requirements when it is depressurized, the vent is usually relatively large, which results in a larger outer diameter at one end of the moving iron core that is adhered to the rubber. There is a hole in the middle of the moving iron core, so that the component can move freely in the shaft and the coil, which means that the outer diameter of the other end of the moving iron core must be smaller than the inner diameter of the coil. The structure with a large outer diameter at one end and a small outer diameter at the other end inevitably results in a large waste of raw materials during the turning process of the static iron core. At the same time, the turning procedure becomes complicated, the production efficiency is low, and the tool life is not long.
[0005] (2) The complex structure of the moving iron core is also a difficulty in the design and manufacture of the rubber-coated mold. In terms of design, the moving iron core is too large, which makes it impossible to have too many mold cavities, seriously reducing production efficiency. In actual mold trials, complex inserts will also increase the instability of the rubber coating, resulting in poor adhesion between rubber and metal parts, and rubber leakage.
[0006] Therefore, there is still room for improvement in the movable iron core assembly of the oil tank isolation valve in the prior art. Utility Model Content
[0007] The utility model aims to provide an isolation valve moving iron core assembly with a reasonable structure, which can reduce production costs and improve production efficiency, so as to solve the technical problems existing in the moving iron core assembly of the existing automobile fuel tank isolation valve.
[0008] In order to achieve the above-mentioned purpose, the utility model provides a moving iron core assembly of an isolation valve, the moving iron core assembly includes a moving iron core, a sealing seat and rubber, the rubber is arranged on the sealing seat, the moving iron core includes a core part and a clamping ring part, the clamping ring part is axially protruding and arranged at one end of the core part, the clamping ring part includes an extrusion part and a retaining ring part, the outer diameter of the extrusion part is smaller than the outer diameter of the retaining ring part, the extrusion part is used for riveting against the sealing seat, and the retaining ring part is used for riveting and clamping the sealing seat.
[0009] According to the movable iron core assembly of the isolation valve described in the preferred embodiment of the utility model, the clamping ring part also includes a spacer ring part, which is arranged between the iron core part and the extrusion part, and the outer diameter of the spacer ring part is smaller than the outer diameter of the extrusion part.
[0010] According to the movable iron core assembly of the isolation valve described in the preferred embodiment of the utility model, the rubber is plastic-coated and connected to the sealing seat.
[0011] According to the movable iron core assembly of the isolation valve described in the preferred embodiment of the utility model, the clamping ring portion is flanged and riveted to be connected to the sealing seat.
[0012] The design concept of this application is to improve the existing oil tank isolation valve, fully review the moving iron core structure, and optimize the structure, which can effectively reduce production costs and improve production efficiency. In addition, optimizing complex processes into a combination of multiple simple processes can effectively solve the defects of the above-mentioned prior art.
[0013] The specific purposes of this application are as follows:
[0014] 1. The new split moving iron core assembly splits the original complex moving iron core into two parts, and then connects the new moving iron core and the sealing seat assembly by riveting;
[0015] 2. The sealing seat manufactured by punching machine has simple and reliable structure, low production cost and high production efficiency;
[0016] 3. The simple and reliable sealing seat rubber coating structure improves the complex insert structure compared with the original rubber coating process, and optimizes the rubber coating of the entire moving iron core to a gasket-shaped sealing seat rubber coating. The new structure not only reduces the difficulty of designing and manufacturing the rubber coating mold, but also improves the product qualification rate and effectively reduces the occurrence of rubber leakage, overflow, and material shortage.
[0017] Therefore, compared with the prior art, the utility model has the following advantages:
[0018] 1. The moving iron core assembly of the present application is improved in product stability and the production quality is easier to control;
[0019] Second, this application is more extensive and adaptable, greatly reducing production costs, and the simplification of component structures can also greatly improve production efficiency;
[0020] 3. This application ensures that the original integrated structure is no longer required while still having high-strength anti-fall-off capabilities.
[0021] Of course, any specific embodiment of the present invention does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a cross-sectional schematic diagram of a moving iron core assembly in the prior art;
[0023] Figure 2 This is a schematic diagram of the explosion of the moving iron core assembly of this application;
[0024] Figure 3 This is an enlarged schematic diagram of the clamping ring portion of this application;
[0025] Figure 4 This is a cross-sectional schematic diagram of the moving iron core assembly of the present application. DETAILED DESCRIPTION
[0026] The present invention is described in detail below with reference to the accompanying drawings.
[0027] Please also refer to Figure 2 and Figure 4 , the exploded schematic diagram of the moving iron core assembly of the present application and the cross-sectional schematic diagram of the moving iron core assembly of the present application, the present application is a moving iron core assembly of an isolation valve, the structure of the moving iron core is optimized, the production cost is effectively reduced and the production efficiency is improved, and the complex process is optimized into a combination of multiple simple processes, which can effectively solve the defects of the above-mentioned prior art; Figure 2 As shown, the moving iron core assembly includes a moving iron core 10, a sealing seat 20 and a rubber 30. The rubber 30 is arranged on the sealing seat 20. In the embodiment of the present application, the rubber 30 is connected to the sealing seat 20 by a plastic coating method. In addition, the sealing seat 20 is arranged on the moving iron core 10.
[0028] Figure 2 In the embodiment, the moving iron core 10 includes an iron core portion 11 and a clamping ring portion 12. The clamping ring portion 12 is produced by punching. Compared with the turning process in the prior art, the punching process of the present application greatly improves the production efficiency. The clamping ring portion 12 axially protrudes from one end of the iron core portion 11. Please refer to Figure 3 The clamping ring portion 12 includes an extrusion portion 122 and a retaining ring portion 123. The extrusion portion 122 and the retaining ring portion 123 are both hollow annular bodies. The outer diameter of the extrusion portion 122 is smaller than the outer diameter of the retaining ring portion 123. Figure 4As shown, the extrusion portion 122 is used for riveting against the sealing seat 20. Specifically, the outer edge surface of the extrusion portion 122 is riveted against the inner edge of the center hole connected to the sealing seat 20. In addition, the retaining ring portion 123 is used for riveting to clamp the sealing seat 20. Specifically, the outer edge surface of the retaining ring portion 123 is bent and clamped to the sealing seat 20 after riveting. After the riveting process, the extrusion portion 122 and the retaining ring portion 123 clamp the sealing seat 20 and prevent it from falling off.
[0029] like Figure 3 As shown, the clamping ring portion 12 also includes a spacer ring portion 121, which is a hollow annular body. The spacer ring portion 121 is arranged between the core portion 11 and the extrusion portion 122. The outer diameter of the spacer ring portion 121 is smaller than the outer diameter of the extrusion portion 122. The purpose of the spacer ring portion 121 is to facilitate the extrusion portion 122 and the retaining ring portion 123 to bend and then abut against and engage with the sealing seat 20 during riveting, thereby tightly fixing the sealing seat 20, thereby ensuring that the sealing seat 20 still has a high-strength anti-slip capability under the premise of being separated from the original integrated structure.
[0030] Preferably, the clamping ring portion 12 of the present application is connected to the sealing seat 20 by flanging and riveting, which greatly reduces the production cost, and the simplification of the component structure can also greatly improve the production efficiency.
[0031] In summary, the moving iron core 10 and the sealing seat 20 of the present application are connected in the form of flanging riveting to ensure the reliability of the assembly; in this structure, the end with a larger outer diameter of the original moving iron core becomes the sealing seat 20 mounted on the new moving iron core, and the gasket-like structure of the sealing seat 20 can be produced by punching a punch press, which greatly improves production efficiency. At the same time, since the moving iron core 10 of the present application does not have an end with a larger outer diameter, the amount of turning in the parts processing process is greatly reduced, which not only saves raw materials, reduces the cost of parts, but also improves machining efficiency, and at the same time reduces the wear of the tool during cutting, which in turn increases the life of the tool; the simple sealing seat 20 structure also greatly reduces the difficulty of the subsequent rubber encapsulation process and improves product reliability.
[0032] It should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0033] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0034] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.
[0035] Therefore, compared with the prior art, the utility model has the following advantages:
[0036] 1. The moving iron core assembly of the present application is improved in product stability and the production quality is easier to control;
[0037] Second, this application is more extensive and adaptable, greatly reducing production costs, and the simplification of component structures can also greatly improve production efficiency;
[0038] 3. This application ensures that the original integrated structure is no longer required while still having high-strength anti-fall-off capabilities.
[0039] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A moving iron core assembly of an isolation valve, characterized in that: The moving iron core assembly includes a moving iron core, a sealing seat and rubber, the rubber is arranged on the sealing seat, the moving iron core includes a core part and a clamping ring part, the clamping ring part is axially protruding and arranged at one end of the core part, the clamping ring part includes an extrusion part and a retaining ring part, the outer diameter of the extrusion part is smaller than the outer diameter of the retaining ring part, the extrusion part is used for riveting against the sealing seat, and the retaining ring part is used for riveting and clamping the sealing seat.
2. The moving iron core assembly of the isolation valve according to claim 1, characterized in that: The clamping ring portion further includes a spacer ring portion, which is disposed between the core portion and the extrusion portion. The outer diameter of the spacer ring portion is smaller than the outer diameter of the extrusion portion.
3. The moving iron core assembly of the isolation valve according to claim 2, characterized in that: The rubber is plastic-coated and connected to the sealing seat.
4. The moving iron core assembly of the isolation valve according to claim 3, characterized in that: The clamping ring portion is flanged and riveted to connect with the sealing seat.