Coil assembly and electromagnetic valve

By designing a high-strength protective case integrated outside the coil body, the problem of the impact of the fixtures and protective case on the coil part during the solenoid valve assembly process is solved, ensuring the stability of the coil performance.

CN222910923UActive Publication Date: 2025-05-27SCHAEFFLER TECHNOLOGIES AG & CO KG
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Patent Information

Application Number
CN202421624595.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-10
Publication Date
2025-05-27
Estimated Expiration
2034-07-10

AI Technical Summary

Technical Problem

During the assembly of the solenoid valve, the fixing parts and protective shells may damage the coil portion or affect its position, thereby affecting the coil performance.

Method used

A coil assembly is designed, including a coil body and a protective case integrating the outside of the coil body. The protective shell consists of a cover and a support member whose strength is greater than that of the cover and is at least partially embedded within the cover to connect with it to form an integral structure to increase the strength of the protective shell.

Benefits of technology

Through this design, the damage and position influence of the fixing parts and protective shell on the coil body is avoided during the assembly process of the solenoid valve, thereby ensuring the stability of the coil performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The coil assembly comprises a coil body and a protective shell, the protective shell is arranged outside the coil body in a covering mode, the protective shell comprises a cover shell and a supporting piece, the cover shell is integrated outside the coil body, the strength of the supporting piece is larger than that of the cover shell, and at least part of the supporting piece is embedded into the cover shell to be connected with the cover shell. According to the coil assembly and the electromagnetic valve, the protective shell and the coil body are integrated into a whole through the housing, and the coil body and the protective shell can be manufactured into one assembly before the electromagnetic valve is assembled. In the assembling process, the fixing piece does not damage the coil body and does not affect the position of the coil body, and therefore the fixing piece and the protective shell are prevented from affecting the performance of the coil in the assembling process.
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Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, and more specifically, to a coil assembly and an electromagnetic valve. Background Art

[0002] The solenoid valve includes a hydraulic part and a coil part. A protective shell is provided outside the coil part. During the assembly of the solenoid valve, the coil part is first installed to the hydraulic part, and then the protective shell is installed outside the coil part. Finally, the protective shell and the coil part are fixed in place with a fixing. However, during the installation and fixing process of the protective shell and the coil part, the fixing and the protective shell may damage the coil part or affect the position of the coil part, thereby affecting the performance of the coil part. Utility Model Content

[0003] The utility model aims to provide a coil assembly and a solenoid valve, which can prevent the fixing parts and the protective shell from affecting the performance of the coil body during the assembly process.

[0004] The utility model provides a coil assembly, the coil assembly comprising:

[0005] a coil body; and

[0006] A protective shell is disposed outside the coil body and includes:

[0007] A cover shell, the cover shell is integrated outside the coil body;

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

[0009] In an embodiment of the utility model, the coil body is cylindrical as a whole, and the support member includes a cylindrical portion and a bottom, the cylindrical portion is located at the radial outer periphery of the coil body, and the cylindrical portion is coaxially arranged with the coil body.

[0010] In an embodiment of the utility model, the bottom is perpendicular to the cylindrical portion, and the center of the bottom has an opening, and the bottom is provided with a notch around the opening.

[0011] In an embodiment of the utility model, the bottom is provided with a positioning step, the positioning step is located radially inward of the notch, and the positioning step is in contact with and fits with the coil body.

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

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

[0014] In the embodiment of the utility model, the cover shell is a plastic part, and the support part is a metal part.

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

[0016] In an embodiment of the utility model, one end of the cover shell is a closed structure, and the other end of the cover shell is an open structure, and the side wall of the end of the open structure forms the second connecting portion of the protective shell.

[0017] The utility model also provides a solenoid valve, which includes a hydraulic component and the above-mentioned coil component, wherein the support member at least partially extends out of the cover shell, and the portion extending out of the cover shell forms a first connecting portion of the protective shell, and the first connecting portion is connected to the hydraulic component.

[0018] In the coil assembly and solenoid valve of the utility model, the coil assembly includes a coil body and a protective shell, the protective shell includes a cover shell and a support member, and the cover shell is integrated on the outside of the coil body. The strength of the support member is greater than the strength of the cover shell, and the support member is at least partially embedded in the cover shell and connected to the cover shell, and the support member can improve the strength of the entire protective shell. The protective shell is integrated with the coil body through the cover shell, so before the solenoid valve is assembled, the coil body and the protective shell can be manufactured as a component. During the assembly process, the fixing member will not damage the coil body, nor will it affect the position of the coil body, thereby avoiding the fixing member and the protective shell affecting the coil performance during the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the coil assembly in an embodiment of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the solenoid valve in the embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the housing of the hydraulic component in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The following will describe the specific implementation of the utility model in conjunction with the accompanying drawings. The following detailed description and drawings are used to exemplarily illustrate the principle of the utility model. The utility model is not limited to the preferred embodiments described, and the protection scope of the utility model is defined by the claims.

[0023] like Figure 1 As shown, the coil assembly 100 of the embodiment of the utility model includes a coil body 110 and a protective shell 120. The coil body 110 includes a winding, a winding bracket, etc. The specific structure of the coil body 110 can refer to the relevant technology, and the structure of the coil body 110 is not described in detail herein. The protective shell 120 is arranged on the outside of the coil body 110 to provide protection for the coil body 110, and the protective shell 120 also assists in the installation of the coil body 110.

[0024] The protective shell 120 includes a cover shell 121 and a support member 122. The cover shell 121 is integrated outside the coil body 110. The strength of the support member 122 is greater than the strength of the cover shell 121, and the support member 122 is at least partially embedded in the cover shell 121 and connected to the cover shell 121.

[0025] The cover 121 is integrated outside the coil body 110 to provide protection for the coil body 110. In addition, the cover 121 is integrated with the coil body 110. Before the solenoid valve is assembled, the coil body 110 and the protective shell 120 can be manufactured as one component. During the assembly process, the fixing part will not damage the coil body 110, nor will it affect the position of the coil body 110, thereby preventing the fixing part and the protective shell 120 from affecting the coil performance during the assembly process.

[0026] The strength of the support member 122 is greater than that of the cover 121, so the support member 122 can provide a better support effect and improve the strength of the entire protective shell 120. The support member 122 is at least partially embedded in the cover 121 and connected to the cover 121. The support member 122 can be fully embedded in the cover 121 to maximize the strength of the entire protective shell 120.

[0027] Of course, the support member 122 may also be partially embedded in the housing 121 and partially extended out of the housing 121. The portion embedded in the housing 121 can provide support to improve the strength of the entire protective housing 120. The portion extending out of 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 by the support member 122 extending out of the housing 121. No additional fixing parts are required to install and fix the protective housing 120 and the coil body 110.

[0028] In the embodiment of the utility model, the coil body 110 is cylindrical as a whole. Here, the coil body 110 is cylindrical as a whole, which does not limit the coil body 110 to be a regular cylinder. Instead, the coil body 110 is roughly cylindrical, and of course other structures such as contacts, contacts, and protrusions are also provided on the coil body 110. The support member 122 includes a cylindrical portion 1221 and a bottom 1222. The cylindrical portion 1221 is located at the radial periphery of the coil body 110, and the cylindrical portion 1221 is coaxially arranged with the coil body 110. The cylindrical portion 1221 can surround the entire periphery of the coil body 110, thereby being more firmly connected to the coil body 110 as a whole.

[0029] The bottom 1222 is perpendicular to the cylindrical portion 1221, and the center of the bottom 1222 has an opening. The opening can provide a passage for structures such as the push rod of the electromagnetic valve to pass through. A notch 1223 is also provided around the opening at the bottom 1222, and the notch 1223 can provide a placement space for other structures such as contacts, contacts, and protrusions on the coil body 110. If there are no corresponding contacts, contacts, protrusions, and other structures on the coil body 110 at the notch 1223, the filling part of the cover 121 at the notch 1223 can better realize the connection of the support member 122 and the cover 121 as one.

[0030] In the embodiment of the utility model, the bottom 1222 is provided with a positioning step 1224, which is located radially inward of the notch 1223, and the positioning step 1224 is in contact with the coil body 110. The positioning step 1224 can realize the positioning of the coil body 110. At the same time, the positioning step 1224 can also increase the electromagnetic field and reduce the magnetic resistance.

[0031] In the embodiment of the utility model, the cover shell 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 at 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, and the cover 121 and the coil body 110 can be integrated into one. The second layer 1212 is located at the radial periphery of the cylindrical portion 1221, and can protect the support member 122. Of course, in addition to the first layer 1211 and the second layer 1212, the cover 121 also includes a portion connecting the first layer 1211 and the second layer 1212, and other functional portions at the end.

[0033] In the embodiment of the utility model, the cover 121 is integrated with the coil body 110. Before the solenoid valve is assembled, the coil body 110 and the protective shell 120 can be manufactured as one component. During the assembly process, the fixing part will not damage the coil body 110, nor will it affect the position of the coil body 110, thereby preventing the fixing part and the protective shell 120 from affecting the coil performance during the assembly process.

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

[0035] The cover 121 is integrally injection molded, and the cover 121 and the coil body 110 are integrated into one body, and at least a portion of the support member 122 is wrapped therein, and the cover 121 and the support member 122 are integrated into one body, so that the coil assembly 100 is an integral structure.

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

[0037] The cover 121 is integrally injection molded and is made of a thermoplastic material. The material is heated to melt, then injected into the mold cavity under high pressure, and after cooling and solidification, a molded product is obtained, such as the first layer 1211, the second layer 1212 and other structures of the cover 121. The cover 121 can be a plastic part. Specifically, the cover 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 may be a metal member. For example, the support member 122 may be made of DC04 cold-rolled low-carbon steel.

[0039] In the embodiment of the utility model, the strength can be improved by using metal parts as the support member 122. The integral injection molding can be conveniently realized by using plastic parts as the cover 121. At the same time, the use of plastic parts as the cover 121 can protect the support member 122 and prevent the protective shell 120 from rusting, corrosion, etc.

[0040] In the embodiment of the utility model, the support member 122 at least partially extends out of the housing 121, and the portion extending out of the housing 121 forms the first connection portion 123 of the protective housing 120. When the coil assembly 100 is installed, the first connection portion 123 is used to connect with the hydraulic assembly 200 of the solenoid valve.

[0041] Optionally, a barb structure 211 or a knurled structure is provided on the housing 210 of the hydraulic assembly 200, and after the angle of the coil body 110 is aligned, the first connecting portion 123 is matched and connected with the barb structure 211 or the knurled structure on the housing 210 of the hydraulic assembly 200 (see Figure 3 ). Optionally, threads may be processed on the first connection portion 123 so as to be threadedly connected to the housing 210 of the hydraulic assembly 200 .

[0042] In the embodiment of the utility model, one end of the cover 121 is a closed structure. The 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 side wall of this end of the open structure forms the second connection part 124 of the protective shell 120.

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

[0044] like Figure 2 As shown, an embodiment of the utility model further provides a solenoid valve, which includes a hydraulic assembly 200 and the above-mentioned coil assembly 100, and the coil assembly 100 includes a coil body 110 and a protective shell 120. The protective shell cover is arranged on the outside of the coil body 110. The protective shell 120 includes a cover shell 121 and a support member 122. The cover shell 121 is integrated on the outside of the coil body 110. The strength of the support member 122 is greater than the strength of the cover shell 121, and the support member 122 is at least partially embedded in the cover shell 121 and connected to the cover shell 121. The support member 122 at least partially extends out of the cover shell 121, and the portion extending out of the cover shell 121 forms a first connecting portion 123 of the protective shell 120, and the first connecting portion 123 is connected to the hydraulic assembly 200.

[0045] The cover 121 is integrated outside the coil body 110 to provide protection for the coil body 110. In addition, the cover 121 is integrated with the coil body 110. Before the solenoid valve is assembled, the coil body 110 and the protective shell 120 can be manufactured as one component. During the assembly process, the fixing part will not damage the coil body 110, nor will it affect the position of the coil body 110, thereby preventing the fixing part and the protective shell 120 from affecting the coil performance during the assembly process.

[0046] The hydraulic assembly 200 can be installed on the shock absorber housing 300 through a threaded connection, and the coil assembly 100 can be installed on the hydraulic assembly 200 through the first connection portion 123 , while the second connection portion 124 formed on the protective shell 120 is connected to the shock absorber housing 300 .

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

[0048] Reference numerals list

[0049] Coil assembly 100

[0050] Coil body 110

[0051] Protective case 120

[0052] Housing 121

[0053] First floor 1211

[0054] Second floor 1212

[0055] Support member 122

[0056] Cylindrical part 1221

[0057] Bottom 1222

[0058] Gap 1223

[0059] Positioning step 1224

[0060] First connection portion 123

[0061] The second connection portion 124

[0062] Hydraulic components 200

[0063] Housing 210

[0064] Barbed structure 211

[0065] Shock absorber housing 300

[0066] Sealing ring 400.

Claims

1. A coil assembly (100), characterized in that: The coil assembly (100) comprises: a coil body (110); and A protective shell (120) is disposed outside the coil body (110) and comprises: A cover shell (121), the cover shell (121) being integrated outside the coil body (110); A support member (122), the strength of the support member (122) is greater than the strength of the cover shell (121), and the support member (122) is at least partially embedded in the cover shell (121) and connected to the cover shell (121).

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

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

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

5. The coil assembly (100) according to claim 2, characterized in that: The cover (121) includes a first layer (1211) and a second layer (1212), wherein 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).

6. The coil assembly (100) according to claim 1, characterized in that: The cover shell (121) is integrally injection molded, and the cover shell (121) is injection molded on the coil body (110) to be integrated outside the coil body (110), and the cover shell (121) is injection molded on 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 shell (121) is a plastic part, and the support part (122) is a metal part.

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

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

10. A solenoid valve, characterized in that: The solenoid valve comprises a hydraulic component (200) and a coil component (100) according to any one of claims 1 to 9, wherein the support member (122) at least partially extends out of the cover shell (121), and the portion extending out of the cover shell (121) forms a first connecting portion (123) of the protective shell (120), and the first connecting portion (123) is connected to the hydraulic component (200).