An electromagnetic coil assembly for a valve device and a valve device.
By integrating an anti-rotation pin into the electromagnetic coil assembly, the problem of electromagnetic coil rotation with the valve body is solved, achieving stable installation and vibration resistance, reducing production costs and improving product quality.
Patent Information
- Application Number
- CN202521766370.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-08-19
AI Technical Summary
In existing valve devices, the electromagnetic coil is prone to rotation with respect to the valve body, which affects the mechanical strength and vibration resistance of the product, leading to unstable product quality.
The electromagnetic coil assembly is made of non-metallic plug and anti-rotation pin. The outer surface of the anti-rotation pin has raised texture and wear-resistant coating. It is made of engineering plastic and reinforced with glass fiber. The cross-section of the anti-rotation pin is elliptical and designed to be tapered to enhance stability.
It effectively prevents the electromagnetic coil from rotating relative to the valve body, simplifies the production process, reduces costs, and improves product quality and reliability.
Smart Images
Figure CN224944370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a valve device, and more particularly to an electromagnetic coil assembly for a valve device. Background Technology
[0002] In fluid control systems, valve devices, such as hydraulic valves, are common control components. They generate electromagnetic force through the solenoid coil of the actuator to drive the valve core to move relative to the valve body, thereby realizing functions such as valve opening and closing and fluid flow direction control.
[0003] To ensure stable installation and engagement between the valve body and the solenoid coil, it is necessary to prevent the solenoid coil from rotating relative to the valve body. Therefore, the mechanical strength and anti-rotation capability of the valve body and the solenoid coil are key factors determining whether the valve assembly can pass vibration testing.
[0004] Therefore, it is desirable to provide a structure that can effectively prevent relative rotation between the electromagnetic coil and the valve body. Utility Model Content
[0005] One of the objectives of this invention is to provide an electromagnetic coil assembly for a valve device that can effectively prevent the electromagnetic coil from rotating relative to the valve body with a simple structure and low cost, thereby ensuring the product quality of the valve device.
[0006] To achieve the above objectives, this utility model proposes an electromagnetic coil assembly for a valve device, which is used to connect to the valve body of the valve device. The electromagnetic coil assembly includes a coil housing and an electromagnetic coil disposed within the coil housing. The coil housing is provided with a plug, which includes a non-metallic plug socket. The axial end face of the coil housing near the valve body has an axially outwardly extending anti-rotation pin, which is integrally formed with the non-metallic plug socket.
[0007] Furthermore, in the electromagnetic coil assembly described in this utility model, the outer surface of the anti-rotation pin has raised texture features.
[0008] Furthermore, in the electromagnetic coil assembly described in this utility model, the texture feature includes a plurality of raised ribs.
[0009] Furthermore, in the electromagnetic coil assembly described in this utility model, the outer surface of the anti-rotation pin has a wear-resistant coating.
[0010] Furthermore, in the electromagnetic coil assembly described in this utility model, the anti-rotation pin is made of engineering plastic.
[0011] Furthermore, in the electromagnetic coil assembly described in this utility model, the engineering plastic is selected from at least one of polybutylene terephthalate, polyamide, and polyphenylene sulfide.
[0012] Furthermore, in the electromagnetic coil assembly described in this utility model, the engineering plastic contains glass fiber reinforcement material.
[0013] Furthermore, in the electromagnetic coil assembly described in this utility model, the engineering plastic contains 30-40 wt% glass fiber reinforcement material.
[0014] Furthermore, in the electromagnetic coil assembly described in this utility model, the cross-section of the anti-rotation pin is elliptical.
[0015] Furthermore, in the electromagnetic coil assembly described in this utility model, the area of the bottom surface of the anti-rotation pin at the connecting end is greater than the area of the top surface at the free end.
[0016] Furthermore, in the electromagnetic coil assembly described in this utility model, the top surface of the anti-rotation pin has a first transition fillet between it and the side wall, and / or the bottom surface of the anti-rotation pin has a second transition fillet between it and the side wall.
[0017] Furthermore, in the electromagnetic coil assembly described in this utility model, the non-metallic plug socket includes an arc-shaped portion, which is nested inside the coil housing to form part of the coil housing.
[0018] Furthermore, in the electromagnetic coil assembly described in this utility model, the thickness of the arc-shaped portion is ≥2.5mm.
[0019] Another objective of this invention is to provide a valve device that can effectively prevent the electromagnetic coil from rotating relative to the valve body with a simple structure and low cost, thereby ensuring product quality.
[0020] Based on the above-mentioned utility model objectives, this utility model also provides a valve device, which includes a valve body and a valve core that can move relative to the valve body, and further includes an electromagnetic coil assembly as described above. The axial end face of the valve body is provided with a groove, and the anti-rotation pin is correspondingly disposed in the groove to prevent the electromagnetic coil from rotating relative to the valve body.
[0021] The electromagnetic coil assembly for valve devices described in this utility model can simplify the product manufacturing process and reduce product costs while achieving anti-rotation function. Attached Figure Description
[0022] Figure 1 This diagram shows a structural schematic of the electromagnetic coil assembly described in one embodiment of the present invention.
[0023] Figure 2 An enlarged schematic diagram of the anti-rotation pin structure of the electromagnetic coil assembly described in this utility model in one embodiment is shown.
[0024] Figure 3 A schematic diagram of the electromagnetic coil assembly described in this invention is shown from the perspective of the axial end face in one embodiment.
[0025] Figure 4 from Figure 3 The diagram shows a magnified view of the anti-rotation pin structure of the electromagnetic coil assembly described in this invention in one embodiment.
[0026] Figure 5 A schematic diagram of the electromagnetic coil assembly described in this utility model is shown from a frontal view in one embodiment.
[0027] Figure 6 from Figure 5 The diagram shows a magnified view of the anti-rotation pin structure of the electromagnetic coil assembly described in this invention in one embodiment.
[0028] Figure 7 A top-down view shows a schematic diagram of the electromagnetic coil assembly of this invention in one embodiment.
[0029] Figure 8 from Figure 7 The diagram shows a magnified view of the anti-rotation pin structure of the electromagnetic coil assembly described in this invention in one embodiment. Detailed Implementation
[0030] The electromagnetic coil assembly and valve device for valve devices described in this utility model will be further explained and described below with reference to the accompanying drawings and specific embodiments. However, this explanation and description do not constitute an undue limitation on the technical solution of this utility model.
[0031] Valve devices, such as hydraulic valves, are common control components. They use electromagnetic coils to generate electromagnetic force to drive the valve core to move relative to the valve body, thereby realizing functions such as opening and closing the valve and controlling the flow direction of fluid.
[0032] To ensure stable installation and engagement between the valve body and the solenoid coil, it is necessary to prevent the solenoid coil from rotating relative to the valve body. Furthermore, the mechanical strength and anti-rotation capabilities of both the valve body and the solenoid coil are key factors determining whether the valve assembly can pass vibration testing.
[0033] To address the aforementioned technical problems, this utility model provides an electromagnetic coil assembly for a valve device in one embodiment, which effectively prevents the electromagnetic coil from rotating relative to the valve body with a simple structure and low cost, thereby ensuring the product quality of the valve device.
[0034] Figure 1This diagram shows a structural schematic of the electromagnetic coil assembly described in one embodiment of the present invention.
[0035] like Figure 1 As shown, in some embodiments, the electromagnetic coil assembly 100 for the valve device has two axial end faces, wherein the axial end face 10 near the valve body is used for connection to the valve body (not shown) of the valve device. The electromagnetic coil assembly 100 includes a coil housing 101 and an electromagnetic coil 102 disposed within the coil housing, and a plug 103 is provided on the coil housing. The axial end face of the electromagnetic coil 102 is provided with a shielding washer 1021. The plug 103 includes a non-metallic plug socket 1031 and metal leads 1032.
[0036] The plug 103 serves as the interface for connecting the electromagnetic coil to an external circuit. The plug connects to an external power source (e.g., DC or AC power, such as DC24V or AC220V) via metal pins 1032, providing a stable current to the electromagnetic coil 102, which is the energy source for the coil's magnetic force. Based on the driving force generated by the electromagnetic coil, the actuating component (not shown in the figure), such as the moving iron core connected to the valve core, can move axially, thereby causing the valve core to move relative to the valve body to achieve the basic function of the valve body.
[0037] In some implementations, the plug may also have a control signal transmission function. For example, the control signal can be transmitted to the electromagnetic coil via the plug to precisely control the coil's on / off state or the magnitude of the current, thereby enabling the valve device to operate at specific times and quantities.
[0038] One of the improvements of this utility model is that an anti-rotation pin 104 extending outward is provided on the axial end face of the coil housing 101 near the valve body, and the anti-rotation pin 104 is integrally formed with the non-metallic plug socket 1031.
[0039] In this embodiment, the present invention integrates the anti-rotation pin directly into the injection-molded structure of the non-metallic plug socket 1031, for example, by using an insert injection molding process to integrally form it with the non-metallic plug socket 1031. This eliminates the need for metal stamping, allowing the anti-rotation pin to be machined on the axial end face of the electromagnetic coil assembly. This significantly simplifies the manufacturing process of the electromagnetic coil assembly with the anti-rotation pin and reduces product costs. If the anti-rotation pin were placed on a metal electromagnetic coil, it would require stamping a metal washer, and this would involve a two-step stamping process: first, stamping a metal washer, such as a shielding washer, from the back to create a large protrusion on the front; then, a second stamping operation from the front to finish the protrusion into its final shape. Since this process requires two sets of dedicated molds, the manufacturing process is quite complex.
[0040] In some specific embodiments, the anti-rotation pin in this invention can be obtained by setting an anti-rotation pin cavity in the injection mold of the non-metallic plug socket.
[0041] In some specific implementation methods, such as Figure 1 As shown, the non-metallic plug socket 1031 may include a metal pin socket 1034 and an arc-shaped portion 1033. The arc-shaped portion 1033 is nested inside the coil housing 101 to form part of the coil housing. An anti-rotation pin 104 is disposed on the arc-shaped portion 1033 and integrally formed with the arc-shaped portion.
[0042] In some more specific embodiments, the thickness of the arcuate portion is ≥2.5mm. It is understood that in some embodiments, the arcuate portion forms part of the coil housing, therefore the thickness of the arcuate portion is also the thickness of the coil housing.
[0043] In some embodiments, to further enhance the friction between the anti-rotation pin and the mating mounting portion, such as the groove of the valve body, the outer surface of the anti-rotation pin 104 may have raised textured features.
[0044] like Figure 2 As shown, in some more specific embodiments, the textured feature may include a plurality of raised ribs 1041. This textured feature including ribs can not only increase the friction between the anti-rotation pin and the mating mounting part, but also further enhance the mechanical strength of the anti-rotation pin, effectively preventing the anti-rotation pin from breaking.
[0045] Of course, in some other, more specific implementations, the texture features can also be other shapes, such as diamond grids or wavy textures.
[0046] In some specific embodiments, the outer surface of the anti-rotation pin may also have a wear-resistant coating to reduce long-term wear and improve durability. In some more specific embodiments, the wear-resistant coating may be a polytetrafluoroethylene (PTFE) coating.
[0047] In some specific implementations, the anti-rotation pin 104 is made of engineering plastic.
[0048] In some more specific embodiments, the engineering plastic is selected from at least one of polybutylene terephthalate (PBT), polyamide (PA) (e.g., PA66), and polyphenylene sulfide (PPS) to further improve anti-pinning performance.
[0049] In some embodiments, the engineering plastic may also contain glass fiber reinforcement to further enhance the mechanical strength of the anti-rotation pin.
[0050] In some more specific embodiments, the engineering plastic may contain 30 to 40 wt% glass fiber reinforcement.
[0051] Considering the tangential force mainly experienced by the anti-rotation pin during the relative rotation between the solenoid coil and the valve body, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the cross-section of the anti-rotation pin is set to be elliptical, and the extension direction of the major axis is substantially along the horizontal direction in the figure, while the extension direction of the minor axis is substantially along the vertical direction in the figure.
[0052] Of course, in some other specific implementations, the cross-section of the anti-rotation pin can also be set to be circular, rectangular, square, or other shapes.
[0053] In some implementations, such as Figure 4 , Figure 6 and Figure 8 As shown, the area of the bottom surface 1042 of the anti-rotation pin 104 at the connecting end (i.e., the end integrally connected with the non-metallic plug socket) is larger than the area of the top surface 1043 at the free end, meaning the anti-rotation pin is conical in shape. With this configuration, when the anti-rotation pin is inserted into the groove of the matching valve body, it acts as a guide, and the fit between the anti-rotation pin and the valve body is more secure.
[0054] In some specific embodiments, the top surface 1043 of the anti-rotation pin has a first transition fillet R1 with the side wall, or the bottom surface 1042 of the anti-rotation pin has a second transition fillet R2 with the side wall.
[0055] In some other specific embodiments, the top surface 1043 of the anti-rotation pin has a first transition fillet R1 between it and the side wall, and the bottom surface 1042 of the anti-rotation pin has a second transition fillet R2 between it and the side wall.
[0056] In some more specific embodiments, the radius of the first transition fillet R1 may be greater than or equal to the radius of the second transition fillet R2.
[0057] In one embodiment, this utility model provides a valve device, which includes a valve body and a valve core that can move relative to the valve body. It also includes an electromagnetic coil assembly as described above, wherein the axial end face of the valve body is provided with a groove adapted to an anti-rotation pin, and the anti-rotation pin is correspondingly disposed in the groove to prevent the electromagnetic coil from rotating relative to the valve body.
[0058] In some specific implementations, the anti-rotation pin can be fitted with the groove clearance.
[0059] In some more specific embodiments, there may be a gap of 0.1 to 0.2 mm between the outer surface of the anti-rotation pin and the inner surface of the groove.
[0060] Since this invention does not improve other parts of the valve device, the further structure and working process of the valve device are described in detail here.
[0061] This invention, by employing the electromagnetic coil assembly described above, simplifies the product manufacturing process and significantly reduces product costs while achieving the function of preventing the electromagnetic coil from rotating relative to the valve body.
[0062] It should be noted that the prior art within the scope of protection of this utility model is not limited to the embodiments given in this utility model document. All prior art that does not contradict the solution of this utility model, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the scope of protection of this utility model.
[0063] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.
[0064] It should also be noted that the embodiments listed above are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments, and any similar changes or modifications made thereto that can be directly derived or easily conceived by those skilled in the art from the content disclosed in this utility model should fall within the protection scope of this utility model.
Claims
1. An electromagnetic coil assembly for a valve device, for connection to a valve body of the valve device, the electromagnetic coil assembly comprising a coil housing (101) and an electromagnetic coil (102) disposed within the coil housing, the coil housing having a plug (103) comprising a non-metallic plug socket (1031); characterized in that, The coil housing has an axially outwardly extending anti-rotation pin (104) on its axial end face near the valve body, and the anti-rotation pin is integrally formed with the non-metallic plug socket.
2. The electromagnetic coil assembly of claim 1, wherein, The outer surface of the anti-rotation pin has raised texture features.
3. The electromagnetic coil assembly as described in claim 2, characterized in that, The texture features include several raised ribs (1041).
4. The electromagnetic coil assembly as described in claim 1, characterized in that, The outer surface of the anti-rotation pin has a wear-resistant coating.
5. The electromagnetic coil assembly as claimed in claim 1, characterized in that, The anti-rotation pin is made of engineering plastic.
6. The electromagnetic coil assembly as described in claim 5, characterized in that, The engineering plastic is selected from polybutylene terephthalate, polyamide, or polyphenylene sulfide.
7. The electromagnetic coil assembly as described in claim 5, characterized in that, The engineering plastic contains glass fiber reinforcement.
8. The electromagnetic coil assembly as claimed in claim 7, characterized in that, The engineering plastic contains 30-40 wt% glass fiber reinforcement.
9. The electromagnetic coil assembly as claimed in claim 1, characterized in that, The cross-section of the anti-rotation pin is elliptical.
10. The electromagnetic coil assembly as claimed in claim 1, characterized in that, The area of the bottom surface (1042) of the anti-rotation pin at the connecting end is greater than the area of the top surface (1043) at the free end.
11. The electromagnetic coil assembly as claimed in claim 1, characterized in that, The top surface of the anti-rotation pin has a first transition fillet (R1) between it and the side wall, and / or the bottom surface of the anti-rotation pin has a second transition fillet (R2) between it and the side wall.
12. The electromagnetic coil assembly as claimed in claim 1, characterized in that, The non-metallic plug socket includes an arcuate portion (1033) that is nested within the coil housing to form part of the coil housing.
13. The electromagnetic coil assembly as claimed in claim 12, characterized in that, The thickness of the arc-shaped portion is ≥2.5mm.
14. A valve device comprising a valve body and a valve core movable relative to the valve body, characterized in that, It also includes the electromagnetic coil assembly as described in any one of claims 1-13, wherein a groove is provided on the axial end face of the valve body, and the anti-rotation pin is correspondingly disposed in the groove.