Coil assembly and solenoid valve

Abstract

The present invention relates to a coil assembly and a solenoid valve. The coil assembly comprises a coil main body and a protective housing, wherein the protective housing covers the outside of the coil main body, and the protective housing comprises an enclosure and a support member, the enclosure being integrated on the outside of the coil main body, the strength of the support member being greater than that of the enclosure, and the support member being at least partially embedded in the enclosure and connected to the enclosure. By means of the coil assembly and the solenoid valve of the present invention, the protective housing is integrated with the coil main body by means of the enclosure, and before the solenoid valve is assembled, the coil main body and the protective housing can be manufactured to be one assembly. During an assembly process, a fixing member does not damage the coil main body, and does not affect the position of the coil main body, thereby preventing the fixing member and the protective housing from affecting the performance of a coil during the assembly process.

Description

Coil assembly and solenoid valve Technical Field

[0001] This invention relates to the technical field of solenoid valves. More specifically, this invention relates to a coil assembly and a solenoid valve. Background Technology

[0002] A solenoid valve consists of a hydraulic component and a coil component. The coil component is protected by a housing. During the assembly of the solenoid valve, the coil component is first installed onto the hydraulic component, then the protective housing is installed on the outside of the coil component, and finally, the protective housing and coil component are secured in place using fasteners. However, during the installation and securing of the protective housing and coil component, the fasteners and protective housing may damage the coil component or affect its position, thereby affecting the performance of the coil component. Summary of the Invention

[0003] The purpose of this invention is to provide a coil assembly and a solenoid valve that avoids the impact of fasteners and protective shells on the performance of the coil body during assembly.

[0004] This invention provides a coil assembly, the coil assembly comprising:

[0005] Coil body; and

[0006] A protective shell, which covers the outside of the coil body and includes:

[0007] A housing, which is integrated on the outside of the coil body;

[0008] A support member, the strength of which is greater than the strength of the housing, and the support member is at least partially embedded within and connected to the housing.

[0009] In this embodiment of the invention, the coil body is cylindrical in shape, and the support member includes a cylindrical part and a bottom. The cylindrical part is located on the radial outer periphery of the coil body and is coaxially arranged with the coil body.

[0010] In an embodiment of the invention, the bottom is perpendicular to the cylindrical portion, and the bottom has an opening at its center, and the bottom has a notch around the opening.

[0011] In this embodiment of the invention, the bottom is provided with a positioning step, the positioning step is located radially inside the notch, and the positioning step is in contact with the coil body.

[0012] In an embodiment of the present invention, the housing includes a first layer and a second layer, the first layer being located between the cylindrical portion and the coil body, and the second layer being located on the radial outer periphery of the cylindrical portion.

[0013] In this embodiment of the invention, the cover is integrally injection molded and is injection molded onto the coil body to be integrated outside the coil body, and the cover is injection molded onto at least a portion of the support member to be connected to the support member.

[0014] In this embodiment of the invention, the cover is a plastic part and the support is a metal part.

[0015] In an embodiment of the invention, the support member extends at least partially beyond the cover, and the portion extending beyond the cover forms a first connecting portion of the protective shell.

[0016] In this embodiment of the invention, one end of the cover is a closed structure, the other end of the cover is an open structure, and the sidewall of the open end forms the second connecting part of the protective shell.

[0017] The present invention also provides a solenoid valve, the solenoid valve including a hydraulic component and the above-described coil component, the support member extending at least partially beyond the housing, and the portion extending beyond the housing forming a first connecting portion of the protective shell, the first connecting portion being connected to the hydraulic component.

[0018] In the coil assembly and solenoid valve of the present invention, the coil assembly includes a coil body and a protective shell. The protective shell includes a cover and a support member, with the cover integrated outside the coil body. The support member has a greater strength than the cover and is at least partially embedded within and connected to the cover, thereby increasing the overall strength of the protective shell. The protective shell is integrated with the coil body via the cover; therefore, the coil body and the protective shell can be manufactured as a single assembly before the solenoid valve is assembled. During assembly, the fasteners do not damage the coil body or affect its position, thus preventing the fasteners and protective shell from affecting coil performance during assembly. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the coil assembly in an embodiment of the present invention.

[0020] Figure 2 is a schematic diagram of the structure of the solenoid valve in an embodiment of the present invention.

[0021] Figure 3 is a schematic diagram of the housing of the hydraulic component in an embodiment of the present invention. Detailed Implementation

[0022] The following description, in conjunction with the accompanying drawings, details specific embodiments of the present invention. The detailed description and drawings below are provided to exemplify the principles of the invention; however, the invention is not limited to the described preferred embodiments, and the scope of protection of the invention is defined by the claims.

[0023] As shown in Figure 1, the coil assembly 100 of this embodiment includes a coil body 110 and a protective shell 120. The coil body 110 includes windings, winding supports, etc. The specific structure of the coil body 110 can be found in related technologies, and will not be described in detail here. The protective shell 120 covers the outside of the coil body 110, providing protection for the coil body 110. The protective shell 120 also assists in the installation of the coil body 110.

[0024] The protective housing 120 includes a cover 121 and a support member 122. The cover 121 is integrated outside the coil body 110. The support member 122 is stronger than the cover 121, and the support member 122 is at least partially embedded within and connected to the cover 121.

[0025] The housing 121 is integrated outside the coil body 110, providing protection for the coil body 110. Furthermore, the housing 121 is integrated with the coil body 110 as a single unit, allowing the coil body 110 and the protective housing 120 to be manufactured as a single component before the solenoid valve is assembled. During assembly, the fasteners will not damage the coil body 110 or affect its position, thus preventing the fasteners and protective housing 120 from affecting coil performance during assembly.

[0026] The strength of the support member 122 is greater than that of the housing 121. Therefore, the support member 122 can provide better support and improve the overall strength of the protective housing 120. The support member 122 is at least partially embedded within and connected to the housing 121. The support member 122 can also be fully embedded within the housing 121 to maximize the strength of the entire protective housing 120.

[0027] Of course, the support member 122 can also be partially embedded within the housing 121 and partially protruding outside the housing 121. The portion embedded within the housing 121 provides support, increasing the overall strength of the protective housing 120. The portion protruding outside the housing 121 can be connected to the hydraulic assembly 200 of the solenoid valve, that is, the protective housing 120 and the coil body 110 are fixed through the support member 122 protruding outside the housing 121. No additional fasteners are needed to install and fix the protective housing 120 and the coil body 110.

[0028] In this embodiment of the invention, the coil body 110 is generally cylindrical. The cylindrical shape of the coil body 110 does not imply that it must be a perfectly regular cylinder. Rather, the coil body 110 is generally cylindrical, although it may also have contacts, protrusions, and other structures. The support member 122 includes a cylindrical portion 1221 and a bottom portion 1222. The cylindrical portion 1221 is located on the radial outer periphery of the coil body 110 and is coaxially arranged with the coil body 110. The cylindrical portion 1221 can surround the entire outer periphery of the coil body 110, thereby more firmly connecting it to the coil body 110 as a single unit.

[0029] The bottom 1222 is perpendicular to the cylindrical portion 1221, and has an opening at its center. This opening provides a passage for structures such as the solenoid valve's push rod. A notch 1223 is also provided around the opening in the bottom 1222, providing space for contacts, protrusions, and other structures on the coil body 110. If there are no corresponding contacts, protrusions, or other structures on the coil body 110 at the notch 1223, the filling portion of the cover 121 at the notch 1223 can better connect the support member 122 and the cover 121 as a single unit.

[0030] In this embodiment of the invention, a positioning step 1224 is provided at the bottom 1222. The positioning step 1224 is located radially inside the notch 1223 and engages with the coil body 110. This positioning step 1224 can position the coil body 110. Furthermore, providing the positioning step 1224 can increase electromagnetic flux and reduce magnetic resistance.

[0031] In this embodiment of the invention, the cover 121 includes a first layer 1211 and a second layer 1212. The first layer 1211 is located between the cylindrical portion 1221 and the coil body 110, and the second layer 1212 is located on the radial outer periphery of the cylindrical portion 1221.

[0032] The first layer 1211 is located between the cylindrical portion 1221 and the coil body 110, integrating the housing 121 and the coil body 110 into one unit. The second layer 1212 is located on the radial outer periphery of the cylindrical portion 1221, providing protection for the support member 122. In addition to the first layer 1211 and the second layer 1212, the housing 121 also includes portions connecting the first layer 1211 and the second layer 1212, as well as other functional portions at the ends.

[0033] In this embodiment of the invention, the housing 121 and the coil body 110 are integrated as one unit. Before the solenoid valve is assembled, the coil body 110 and the protective housing 120 can be manufactured as a single component. During the assembly process, the fasteners will not damage the coil body 110, nor will they affect the position of the coil body 110, thereby avoiding the fasteners and protective housing 120 affecting the coil performance during the assembly process.

[0034] In this embodiment of the invention, the cover 121 is integrally injection molded and is injection molded onto the coil body 110 to be integrated on the outside of the coil body 110. The cover 121 is injection molded onto at least a portion of the support member 122 to be connected to the support member 122.

[0035] The housing 121 is integrally injection molded, integrating the housing 121 with the coil body 110 into one unit, and simultaneously enclosing at least a portion of the support member 122 within it, thus integrating the housing 121 and the support member 122 into one unit. This achieves the coil assembly 100 as a single integral structure.

[0036] When manufacturing the coil assembly 100, the coil body 110 and the support member 122 can be positioned first, and then the cover 121 material can be injection molded, thereby integrating the coil body 110, the support member 122 and the cover 121 into a coil assembly 100 with an integral structure.

[0037] The housing 121 is integrally injection molded and is made of a thermoplastic material. The material is heated to a molten state, then injected into the mold cavity under high pressure. After cooling and solidification, a molded product is obtained, forming, for example, the first layer 1211, the second layer 1212, and other structures of the housing 121 described above. The housing 121 can be a plastic part. Specifically, the housing 121 can be made of PA66 polyamide resin and glass fiber.

[0038] The strength of the support member 122 is greater than the strength of the housing 121. The support member 122 can be a metal part. For example, the support member 122 can be made of DC04 cold-rolled low-carbon steel.

[0039] In this embodiment of the invention, using a metal component as the support 122 can improve strength. Using a plastic component as the cover 121 allows for easy one-piece injection molding. Simultaneously, using a plastic component as the cover 121 can protect the support 122, preventing the protective shell 120 from rusting or corroding.

[0040] In this embodiment of the invention, the support member 122 extends at least partially beyond the cover 121, and this portion extending beyond the cover 121 forms a first connecting portion 123 of the protective shell 120. During the installation of the coil assembly 100, the first connecting portion 123 is used to connect to the hydraulic assembly 200 of the solenoid valve.

[0041] Optionally, the housing 210 of the hydraulic assembly 200 is provided with a barbed structure 211 or a knurled structure. After the coil body 110 is aligned at an angle, the first connecting part 123 is engaged with the barbed structure 211 or the knurled structure on the housing 210 of the hydraulic assembly 200 (see Figure 3). Optionally, threads may be machined on the first connecting part 123 to achieve a threaded connection with the housing 210 of the hydraulic assembly 200.

[0042] In this embodiment of the invention, one end of the cover 121 is a closed structure. This closed structure can connect the first layer 1211 and the second layer 1212, and can also provide installation space for other functional components. The other end of the cover 121 is an open structure. And the sidewall of this open end forms the second connecting portion 124 of the protective shell 120.

[0043] When the coil assembly 100 is installed, the second connecting portion 124 is used to connect to the shock absorber housing 300. This provides protection for the coil body 110 from the housing 121. A sealing ring 400 can also be provided between the second connecting portion 124 and the shock absorber housing 300 to provide a better seal. For example, the end of the second layer 1212 described above can form the second connecting portion 124 of the protective shell 120.

[0044] As shown in Figure 2, this embodiment of the invention also provides a solenoid valve, which includes a hydraulic assembly 200 and the aforementioned coil assembly 100. The coil assembly 100 includes a coil body 110 and a protective shell 120. The protective shell covers the outside of the coil body 110. The protective shell 120 includes a cover 121 and a support member 122. The cover 121 is integrated outside the coil body 110. The strength of the support member 122 is greater than the strength of the cover 121, and the support member 122 is at least partially embedded within and connected to the cover 121. The support member 122 extends at least partially beyond the cover 121, and this portion extending beyond the cover 121 forms a first connecting portion 123 of the protective shell 120, which is connected to the hydraulic assembly 200.

[0045] The housing 121 is integrated outside the coil body 110, providing protection for the coil body 110. Furthermore, the housing 121 is integrated with the coil body 110 as a single unit, allowing the coil body 110 and the protective housing 120 to be manufactured as a single component before the solenoid valve is assembled. During assembly, the fasteners will not damage the coil body 110 or affect its position, thus preventing the fasteners and protective housing 120 from affecting coil performance during assembly.

[0046] The hydraulic assembly 200 can be installed onto the shock absorber housing 300 via a threaded connection. The coil assembly 100 can be installed onto the hydraulic assembly 200 via the first connecting part 123. At the same time, the second connecting part 124 formed on the protective housing 120 is connected to the shock absorber housing 300.

[0047] As mentioned above, although exemplary embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the specific embodiments described above, and the scope of protection of the present invention should be defined by the claims and their equivalents.

[0048] List of reference numerals: Coil assembly 100, Coil body 110, Protective shell 120, Cover 121, First layer 1211, Second layer 1212, Support member 122, Cylindrical part 1221, Bottom 1222, Notch 1223, Positioning step 1224, First connecting part 123, Second connecting part 124, Hydraulic assembly 200, Housing 210, Barbed structure 211, Shock absorber housing 300, Sealing ring 400.

Claims

1. A coil assembly (100), characterized in that, The coil assembly (100) includes: Coil body (110); and A protective shell (120) is provided over the outside of the coil body (110) and includes: A housing (121) is integrated on the outside of the coil body (110); A support member (122) having a strength greater than that of the housing (121), and the support member (122) being at least partially embedded within and connected to the housing (121).

2. The coil assembly (100) according to claim 1, characterized in that, The coil body (110) is cylindrical in shape. The support member (122) includes a cylindrical part (1221) and a bottom (1222). The cylindrical part (1221) is located on the radial outer periphery of the coil body (110) and is coaxially arranged with the coil body (110).

3. The coil assembly (100) according to claim 2, characterized in that, The bottom (1222) is perpendicular to the cylindrical portion (1221), and the bottom (1222) has an opening at its center, and the bottom (1222) has a notch (1223) around the opening.

4. The coil assembly (100) according to claim 3, characterized in that, The bottom (1222) is provided with a positioning step (1224), which is located radially inside the notch (1223) and is in contact with the coil body (110).

5. The coil assembly (100) according to claim 2, characterized in that, The housing (121) includes a first layer (1211) and a second layer (1212), the first layer (1211) being located between the cylindrical portion (1221) and the coil body (110), and the second layer (1212) being located on the radial outer periphery of the cylindrical portion (1221).

6. The coil assembly (100) according to claim 1, characterized in that, The cover (121) is integrally injection molded and is injection molded onto the coil body (110) to be integrated onto the outside of the coil body (110). The cover (121) is injection molded onto at least a portion of the support member (122) to be connected to the support member (122).

7. The coil assembly (100) according to claim 6, characterized in that, The cover (121) is made of plastic, and the support (122) is made of metal.

8. The coil assembly (100) according to claim 1, characterized in that, The support member (122) extends at least partially beyond the cover (121), and the portion extending beyond the cover (121) forms the first connection portion (123) of the protective shell (120).

9. The coil assembly (100) according to claim 1, characterized in that, One end of the cover (121) is a closed structure, and the other end of the cover (121) is an open structure, and the sidewall of the open end forms the second connecting part (124) of the protective shell (120).

10. A solenoid valve, characterized in that, The solenoid valve includes a hydraulic assembly (200) and a coil assembly (100) according to any one of claims 1-9, wherein the support member (122) extends at least partially beyond the housing (121), and the portion extending beyond the housing (121) forms a first connection portion (123) of the protective shell (120), the first connection portion (123) being connected to the hydraulic assembly (200).

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