Coil structure of solenoid valve and solenoid valve

Abstract

The utility model discloses a coil structure of solenoid valve and solenoid valve relates to control valve manufacturing technical field. Coil structure includes: structure main part, coil, and the coil is established on structure main part, and the electric terminal is connected with the coil electricity, and the elastic piece, and the elastic piece one end is connected on structure main part, and the other end of elastic piece is equipped with the connecting portion for hanging the installation carrier. This coil structure, through setting elastic piece realizes elastic buffer protection function and keeping function, and a dual -purpose. The coil structure like this does not need to increase the retainer structure additionally, and the mould is relatively simple. The installation carrier is hooked by the connecting portion on the elastic piece, and the installation is simple and reliable, and the vibration process will not cause the influence to the surrounding device.

Description

Technical Field

[0001] This utility model relates to the field of control valve manufacturing technology, specifically to a coil structure and a solenoid valve. Background Technology

[0002] One type of solenoid valve disclosed in the related technology has two retainers installed on the coil structure, and the two retainers are connected to the mounting carrier. When the coil is energized and vibrates up and down, it drives the retainers to vibrate up and down. The retainers repeatedly collide with the mounting carrier and other components, which poses a risk of damage and needs to be improved. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a coil structure for a solenoid valve, which reduces the risk of impact damage to the coil structure when the coil is energized and vibrates.

[0004] This application also aims to provide a solenoid valve having the above-described coil structure.

[0005] The coil structure of the solenoid valve according to an embodiment of the present utility model includes: a structural body; a coil disposed on the structural body; a power terminal electrically connected to the coil; and an elastic member, one end of which is connected to the structural body, and the other end of which is provided with a connecting portion for holding a mounting carrier.

[0006] According to the embodiment of this utility model, the coil structure of the solenoid valve achieves both elastic buffer protection and holding functions by incorporating an elastic element, providing dual functionality in one unit. This eliminates the need for an additional retainer structure in the coil, simplifying the mold design. The elastic element is hooked onto the mounting carrier by a connecting part, ensuring simple and reliable installation, and preventing vibration from affecting surrounding components.

[0007] In some embodiments, the elastic element includes a diaphragm spring.

[0008] Specifically, the diaphragm spring includes:

[0009] A first connecting segment, the first connecting segment being connected to the main structural body;

[0010] A second connecting segment is located on the side of the first connecting segment facing the power terminal, and the connecting part is connected to the second connecting segment;

[0011] A transition segment, which connects the first connection segment and the second connection segment, wherein the angle between the transition segment and the first connection segment is an obtuse angle.

[0012] Furthermore, the main body of the structure is provided with a through assembly hole, the transition segment is two and connected to the two ends of the same side of the first connecting segment, each transition segment is connected to a second connecting segment, and each second connecting segment is connected to the connecting part;

[0013] The first connecting segment, the two transition segments, and the two second connecting segments are arranged around the mounting hole.

[0014] Specifically, the connecting part is a hook.

[0015] Optionally, the elastic element is a diaphragm spring, and the connecting portion is integrally formed on the diaphragm spring.

[0016] In some embodiments, the main body of the structure is provided with a through mounting hole, and there are two connecting parts located on both sides of the mounting hole. The hooks of the two connecting parts are bent toward each other, or the hooks of the two connecting parts are bent away from each other.

[0017] In some embodiments, the elastic element is provided with a first riveting hole, the main body of the structure is provided with a second riveting hole, and the coil structure further includes rivets assembled in the first riveting hole and the second riveting hole.

[0018] Specifically, the rivet is interference-fitted into the first riveting hole.

[0019] In some embodiments, the main body of the structure includes: a housing having an opening; a frame disposed inside the housing, the coil wound on the frame, and one end of the power terminal fixed on the frame; and a top cover fitted at the opening, with the elastic element connected to the top cover.

[0020] The solenoid valve according to an embodiment of the present invention includes: the coil structure described in the above embodiment.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a cross-sectional view of the coil structure in one embodiment;

[0024] Figure 2 This is an exploded view of the coil structure in one embodiment;

[0025] Figure 3 This is a perspective view of the elastic element in one embodiment;

[0026] Figure 4 This is a side view of the elastic element in one embodiment;

[0027] Figure 5 This is a front view of the elastic element in another embodiment;

[0028] Figure 6 This is a perspective view of the installation scenario of the coil structure in one embodiment;

[0029] Figure 7 for Figure 6 Another perspective view of the installation scenario of the coil structure in the illustrated embodiment.

[0030] Figure label:

[0031] Coil structure 10

[0032] Main structure 1, second riveting hole 102,

[0033] Outer shell 11, opening 111, first sub-hole 114

[0034] Frame 12, Post 122, Positioning Block 123, Second Sub-hole 124

[0035] Top cover 13, notch 131, first positioning groove 133, third sub-hole 134

[0036] Assembly hole 14

[0037] Coil 2, Terminal 3

[0038] Elastic element 4, diaphragm spring 40, first connecting segment 41, first riveting hole 411, second positioning groove 413, second connecting segment 42, transition segment 43, connecting part 44, hook 441.

[0039] 5. Rivets; 6. Valve core

[0040] Mounting carrier 60, reserved hole 61, hanging hole 62, circuit board 70. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The following is for reference. Figures 1-7 The coil structure 10 of the solenoid valve according to an embodiment of the present invention is described.

[0045] According to the coil structure 10 of the solenoid valve in this embodiment of the present invention, refer to... Figure 1 It includes: structural body 1, coil 2, electrical terminal 3 and elastic element 4.

[0046] Coil 2 is mounted on the main body 1, and terminal 3 is electrically connected to coil 2. One end of elastic element 4 is connected to the main body 1, and the other end of elastic element 4 is provided with a connecting part 44 for holding the mounting carrier 60. After being held, elastic element 4 can provide buffer protection for the main body 1. In some designs, elastic element 4 can apply a preload to the main body 1.

[0047] It should be noted that, in addition to the coil structure 10, a solenoid valve typically includes a valve body, which is usually also the pneumatic or hydraulic circuit of the solenoid valve. A movable valve core 6 is mounted on the valve body. The coil structure 10 and the valve core 6 are electromagnetically coupled. When the coil structure 10 is energized, it generates a magnetic field, and the valve core 6 moves under the drive of electromagnetic induction, thereby controlling the on / off state of the pneumatic or hydraulic circuit of the solenoid valve.

[0048] In the coil structure 10 of the solenoid valve, coil 2 is used to generate a magnetic field, and the main body 1 is the supporting structure for coil 2, used to protect and support coil 2. The connection terminal 3 is set so that one end is connected to coil 2 and the other end is connected to the control circuit of the solenoid valve. The control circuit transmits current to coil 2 through connection terminal 3 according to the control signal.

[0049] In applications where solenoid valves are used, the coil structure 10 needs to be mounted on the mounting carrier 60. For example... Figure 6 and Figure 7 As shown, the mounting carrier 60 is a device that supports the circuit board 70 and fixes the coil structure 10 of the solenoid valve to achieve its function.

[0050] In conventional designs, a retainer is incorporated into the coil structure and connected to the mounting carrier. However, when the coil structure is energized and drives the valve core to move, the valve core's movement causes the coil structure to vibrate. This results in the retainer repeatedly vibrating and colliding with components such as the mounting carrier, posing a risk of damage.

[0051] In this application, an elastic element 4 is provided. One end of the elastic element 4 is connected to the main body 1, and the other end is provided with a connecting part 44. The connecting part 44 can be hung on the mounting carrier 60, so the elastic element 4 acts as a retainer, holding the main body 1 in a set position on the mounting carrier 60. At the same time, the elastic element 4 also acts as a buffer. When the coil 2 vibrates due to the movement of the valve core 6, the elastic element 4 absorbs the vibration energy, reduces the vibration amplitude of the coil structure 10, and reduces vibration impact loss.

[0052] According to the coil structure 10 of this utility model embodiment, the elastic element 4 is provided to achieve both elastic buffer protection and retention functions, serving a dual purpose in one piece. This eliminates the need for an additional retainer structure on the coil structure 10, simplifying the mold and reducing processing costs. The elastic element 4 is hooked onto the mounting carrier 60 by the connecting part 44, making installation simple and reliable, and preventing vibration from affecting surrounding components. Furthermore, the hooking of the connecting part 44 onto the mounting carrier 60 effectively limits the coil structure 10 on the mounting carrier 60, facilitating the connection of the electrical terminal 3 to the circuit board 70. Thus, the positioning effect of the connecting part 44 improves the positioning accuracy of the electrical terminal 3. In some designs, the elasticity of the elastic element 4 can also provide pre-tightening force to the coil structure 10, ensuring that the connecting part 44 does not shift when the elastic element 4 extends or retracts.

[0053] Specifically, such as Figure 3 As shown, the connecting part 44 can be a hook, which makes the structure simple and easy to assemble. Of course, the solution of this application is not limited to this; the connecting part 44 can also be connected to the mounting carrier 60 by fasteners.

[0054] In some embodiments, such as Figure 1 and Figure 2 As shown, the main structure 1 includes an outer shell 11 and a frame 12. The frame 12 is located inside the outer shell 11, and the coil 2 is wound on the frame 12. The outer shell 11 provides external protection for the coil 2, and the frame 12 provides internal support for the coil 2.

[0055] Specifically, the outer casing 11 has an opening 111, and the main body 1 also includes an upper cover 13, which fits into the opening 111. The opening 111 is designed to facilitate the insertion of the frame 12 into the outer casing 11, and the upper cover 13 provides encapsulation and protection. Furthermore, the elastic element 4 can be connected to the upper cover 13 to reduce damage to the coil 2 during connection.

[0056] Specifically, such as Figure 2 As shown, one end of the power terminal 3 is fixed to the frame 12, and the power terminal 3 is fixed and supported by the frame 12. The end of the power terminal 3 connected to the frame 12 is connected to the coil 2, and the coil 2 does not need to be led out.

[0057] Specifically, such as Figure 2 and Figure 1 As shown, the upper cover 13 has a notch 131, and the frame 12 has a column 122 on the side facing the opening 111, which fits into the notch 131. A portion of the power terminal 3 is fixed inside the column 122, and its end extends into the frame 12 to connect with the coil 2. The column 122 fitting into the notch 131 also serves to provide angular positioning.

[0058] Specifically, the frame 12 is an insulating component, the electrical terminal 3 is a conductor, and the column 122 is integrally formed on the frame 12 and is also an insulating component. Optionally, the electrical terminal 3 is integrally formed on the column 122 by injection molding.

[0059] To further improve the positioning function, the frame 12 is provided with a positioning block 123 on the side facing the opening 111, and the upper cover 13 is provided with a first positioning groove 133 that cooperates with it.

[0060] Specifically, the elastic element 4 is connected to the upper cover 13. Optionally, such as Figure 2 As shown, the elastic element 4 is provided with a second positioning groove 413, and the positioning block 123 is inserted into the first positioning groove 133 and the second positioning groove 413.

[0061] In some embodiments, in order to assemble the valve core 6, the main body 1 is provided with an assembly hole 14. Specifically, the assembly hole 14 is provided through the main body 1 along the axial direction of the coil 2.

[0062] Specifically, the main structure 1 includes: an outer shell 11, a frame 12, and a top cover 13, with assembly holes 14 formed on these three parts respectively. Figure 1 and Figure 2As shown, the mounting hole 14 includes a first sub-hole 114 formed on the outer shell 11, a second sub-hole 124 formed on the frame 12, and a third sub-hole 134 formed on the upper cover 13. The three holes are coaxially arranged.

[0063] In some embodiments, the elastic element 4 includes a diaphragm spring 40. Of course, this application does not exclude the possibility that in some solutions, the elastic element 4 may be a cylindrical spring, a torsion spring, etc. However, using a diaphragm spring 40 is convenient for installation, occupies little space, has a simple structure, is easy to process, is compact, inexpensive, and has strong applicability.

[0064] Specifically, such as Figures 3-5 As shown, the diaphragm spring 40 includes a first connecting segment 41, a second connecting segment 42, and a transition segment 43. The first connecting segment 41 is connected to the main body 1, and the second connecting segment 42 is located on the side of the first connecting segment 41 facing the electrical terminal 3. A connecting portion 44 is connected to the second connecting segment 42. The transition segment 43 connects the first connecting segment 41 and the second connecting segment 42, and the angle between the transition segment 43 and the first connecting segment 41 is an obtuse angle.

[0065] This allows for greater elastic force on the diaphragm spring 40 within a smaller space. Furthermore, the connection points between the three components exhibit minimal bending, making them less prone to breakage under repeated compression, resulting in a long service life and high reliability.

[0066] Furthermore, such as Figure 2 As shown, the main body 1 has a through mounting hole 14. There are two transition segments 43 connected to the two ends of the first connecting segment 41 on the same side. Each transition segment 43 is connected to a second connecting segment 42, and each second connecting segment 42 is connected to a connecting part 44. The first connecting segment 41, the two transition segments 43, and the two second connecting segments 42 are arranged around the mounting hole 14. That is to say, the elastic element 4 is set around the mounting hole 4. This does not affect the assembly with the valve core 6, and leaves space above the mounting hole 4 to avoid the valve core 6 protruding and causing obstruction. Moreover, the contact line between the elastic element 4 and the main body 1 is long, so the elastic element 4 can apply the elastic force to a larger area of ​​the main body 1, achieving elastic force dispersion and providing more stable buffer protection and support for the main body 1.

[0067] Alternatively, the connecting part 44 is integrally formed on the diaphragm spring 40, so that the connecting part 44 does not need to be processed separately and is not easy to fall off.

[0068] Specifically, the diaphragm spring 40 is a sheet body, and the connecting part 44 can be formed by bending the sheet body material upward. The stress concentration at the connection point is small and it is not easy to break.

[0069] In some embodiments, such as Figure 2As shown, the main body 1 has a through mounting hole 14, and there are two connecting parts 44 located on both sides of the mounting hole 14. In this way, the elastic force generated by the elastic element 4 after it is hooked can act on both sides of the mounting hole 14 of the main body 1, and the force is balanced, which makes it less likely to be skewed and cause excessive wear between it and the valve core 6.

[0070] In some specific embodiments, such as Figure 3 As shown, the hooks 441 of the two connecting parts 44 are bent toward each other. When hanging the diaphragm spring 40, the two connecting parts 44 can be opened and inserted into the two hanging holes 62 of the mounting carrier 60. After insertion, the diaphragm spring 40 is released, and the diaphragm spring 40 returns to its original position. The two connecting parts 44 are brought close together and can be locked in the hanging hole 62.

[0071] In other specific embodiments, such as Figure 5 As shown, the hooks 441 of the two connecting parts 44 are bent in a direction away from each other. This also ensures a stable hanging position.

[0072] In some embodiments, such as Figure 2 As shown, the elastic element 4 has a first riveting hole 411, and the main body 1 has a second riveting hole 102. The coil structure 10 also includes rivets 5 assembled in the first riveting hole 411 and the second riveting hole 102. This allows the elastic element 4 to be connected and fixed to the main body 1, preventing it from easily loosening. It is especially resistant to detachment during vibration, resulting in high connection reliability.

[0073] Specifically, the rivet 5 is interference-fitted into the first riveting hole 411, so that before riveting, the rivet 5 can be pre-fixed to the elastic member 4 by interference fit. Subsequently, pressure can be applied, for example by riveting the rivet 5 to deform it, thereby locking the elastic member 4 and the main structural body 1.

[0074] Specifically, the second rivet hole 102 is formed on the upper cover 13.

[0075] Furthermore, the top cover 13 is fixedly connected to the outer casing 11 by interference fit or other means.

[0076] Optionally, the power terminal 3 is a PIN pin, which is the power connector for the coil 2. The PIN pin is supported and fixed by the frame 12.

[0077] Optionally, the top cover 13 is a metal cover, which has high structural strength and high support reliability.

[0078] The solenoid valve 100 according to an embodiment of the present invention includes: the coil structure 10 described in the above embodiment. This can improve assembly accuracy, reduce damage caused by vibration, and extend service life.

[0079] In some specific embodiments, such as Figure 6 and Figure 7As shown, when the solenoid valve 100 is assembled, its circuit board 70 and coil structure 10 are both mounted on the mounting carrier 60.

[0080] Specifically, the mounting carrier 60 is located on one side of the circuit board 70, and the mounting carrier 60 is provided with a reserved hole 61 and a hanging hole 62. The coil structure 10 is hung at the hanging hole 62 through the connecting part 44, and the power terminal 3 on the coil structure 10 is connected to the circuit board 70 through the reserved hole 61.

[0081] The elastic element 4 is a diaphragm spring 40, which is fixed on the mounting carrier 60. When the solenoid valve is installed, the diaphragm spring 40 is in a pre-compressed state. During vehicle operation, the coil structure 10 vibrates up and down, and the diaphragm spring 40 provides a rebound force to keep the diaphragm spring 40 close to the valve body of the solenoid valve. In addition, it avoids the diaphragm spring 40 from vibrating up and down and causing collision noise.

[0082] Other components of the solenoid valve according to the embodiments of the present invention, such as coils, valve body channels, etc., and its operation are known to those skilled in the art and will not be described in detail here.

[0083] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coil structure for a solenoid valve, characterized in that, include: Main structural element; A coil, wherein the coil is disposed on the main body of the structure; A power terminal is provided, which is electrically connected to the coil. An elastic element, one end of which is connected to the main body of the structure, and the other end of which is provided with a connecting part for hanging the mounting carrier.

2. The coil structure according to claim 1, characterized in that, The elastic element includes a diaphragm spring.

3. The coil structure according to claim 2, characterized in that, The diaphragm spring includes: A first connecting segment, the first connecting segment being connected to the main structural body; A second connecting segment is located on the side of the first connecting segment facing the power terminal, and the connecting part is connected to the second connecting segment; A transition segment, which connects the first connection segment and the second connection segment, wherein the angle between the transition segment and the first connection segment is an obtuse angle.

4. The coil structure according to claim 3, characterized in that, The main body of the structure is provided with a through assembly hole. There are two transition segments connected to the two ends of the same side of the first connecting segment. Each transition segment is connected to a second connecting segment, and each second connecting segment is connected to the connecting part. The first connecting segment, the two transition segments, and the two second connecting segments are arranged around the mounting hole.

5. The coil structure according to claim 1, characterized in that, The connecting part is a hook.

6. The coil structure according to claim 5, characterized in that, The elastic element includes a diaphragm spring, and the hook is integrally formed on the diaphragm spring.

7. The coil structure according to claim 1, characterized in that, The main body of the structure is provided with a through assembly hole, and there are two connecting parts located on both sides of the assembly hole. The hooks of the two connecting parts are bent toward each other, or the hooks of the two connecting parts are bent away from each other.

8. The coil structure according to claim 1, characterized in that, The elastic element is provided with a first riveting hole, the main body of the structure is provided with a second riveting hole, and the coil structure also includes rivets assembled in the first riveting hole and the second riveting hole.

9. The coil structure according to any one of claims 1-8, characterized in that, The main structure includes: The housing has an opening; A frame is disposed inside the outer casing, a coil is wound on the frame, and one end of the power terminal is fixed to the frame. A top cover, which fits into the opening, and an elastic element connected to the top cover.

10. A solenoid valve, characterized in that, include: The coil structure according to any one of claims 1-9.

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