Yoke structure and electromagnetic valve

Abstract

The utility model belongs to solenoid valve technical field discloses a yoke structure and solenoid valve. This yoke structure includes magnetic conducting sleeve and magnetic conducting ring, and the magnetic conducting sleeve includes installation portion and limit surface, and the limit surface is provided with the outer peripheral surface of installation portion and shows the angle setting, and the magnetic conducting ring interference fit is set up in installation portion, and the magnetic conducting ring is butt joint in limit surface. Can choose the appropriate diameter and length's bar material according to the specific size of magnetic conducting sleeve and magnetic conducting ring, reduces unnecessary material waste, reduces production cost, when the quality problem of anyone in magnetic conducting sleeve and magnetic conducting ring appears, can be scrapped alone, makes the scrap loss smaller, when the magnetic conducting ring is butt joint with limit surface, installs in place, and limit surface provides the clear axial positioning datum for magnetic conducting ring, so that the magnetic conducting ring can be quickly installed to the correct position, and the interference assembly can make the connection between magnetic conducting ring and magnetic conducting sleeve close, strengthens the structural stability, so that the magnetic conducting ring and magnetic conducting sleeve do not easily come off, guarantees the reliability of yoke structure.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to a yoke structure and an electromagnetic valve. Background Technology

[0002] In electromagnet valves, the yoke structure, together with the housing and moving iron, forms a closed magnetic circuit, reducing magnetic resistance and ensuring efficient conduction of the magnetic flux generated by the coil. In existing technology, the yoke structure has a magnetic flange at one end for mating with the inner hole of the solenoid valve housing, and a cylindrical structure at the other end for assembly into the inner hole of the coil frame. There are two methods for machining this yoke structure. The first method involves producing a blank through cold heading and then machining it into shape. This method has a small machining allowance but requires the creation of cold heading dies, resulting in higher costs and is only suitable for continuous mass production. The second method involves directly machining a round bar stock. This method allows for one-step machining, but the machining volume is large, leading to significant material waste, low processing efficiency, and higher overall costs.

[0003] Therefore, there is a need to provide a yoke structure and a solenoid valve to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a yoke structure and solenoid valve that reduces machining workload, improves machining efficiency, reduces production costs, and has good reliability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A yoke structure, comprising:

[0007] A magnetic sleeve, the magnetic sleeve including a mounting part and a limiting surface, the limiting surface being set at an angle to the outer peripheral surface of the mounting part;

[0008] A magnetic guide ring is interference-fitted onto the mounting portion and abuts against the limiting surface.

[0009] Preferably, the magnetic sleeve includes a first section and a second section coaxially connected, the outer diameter of the first section being larger than the outer diameter of the second section to form the limiting surface, and the second section being the mounting part.

[0010] Preferably, the first segment and the second segment are integrally formed.

[0011] Preferably, the outer periphery of the magnetic sleeve is provided with a limiting portion, and the side wall of the limiting portion facing the mounting portion is the limiting surface.

[0012] Preferably, the outer periphery of the mounting portion is recessed with a relief groove, and the relief groove is located adjacent to the limiting surface.

[0013] Preferably, the magnetic sleeve has a machining groove recessed on its outer periphery, and the yoke structure further includes:

[0014] A magnetic shielding component is disposed within the processing groove, and the magnetic shielding component is made of a non-magnetic material.

[0015] Preferably, the magnetic shielding component is made of copper.

[0016] Preferably, both the magnetic sleeve and the magnetic ring are made of magnetically conductive materials.

[0017] Preferably, the magnetic sleeve has a through groove extending through it along the axial direction.

[0018] An electromagnetic valve comprising the yoke structure described above.

[0019] The beneficial effects of this utility model are:

[0020] This yoke structure includes a magnetic sleeve and a magnetic ring. The magnetic sleeve includes a mounting part and a limiting surface. The limiting surface is set at an angle to the outer peripheral surface of the mounting part. The magnetic ring is interference-fitted onto the mounting part and abuts against the limiting surface.

[0021] The yoke structure in this invention includes a magnetic sleeve and a magnetic ring, and the magnetic sleeve and magnetic ring are machined separately. This allows for the selection of appropriate diameter and length bars based on the specific dimensions of the magnetic sleeve and magnetic ring, making the bars more suitable for processing requirements, reducing unnecessary material waste, reducing machining operations, improving material utilization and processing efficiency, and lowering production costs.

[0022] The yoke structure in this invention separates the magnetic sleeve and the magnetic ring into separate parts, so that the two do not interfere with each other. If either one has a quality problem, it can be scrapped separately without affecting the other, thus minimizing scrap losses and reducing production costs.

[0023] The yoke structure of this invention allows the magnetic ring to be interference-fitted into the mounting part and axially limited by a limiting surface. When the magnetic ring abuts against the limiting surface, it is installed in place. The limiting surface provides a clear axial positioning reference for the magnetic ring, enabling it to be quickly installed in the correct position. The interference fit ensures a tight connection between the magnetic ring and the magnetic sleeve, enhancing structural stability and preventing the magnetic ring and sleeve from easily loosening, thus guaranteeing the reliability of the yoke structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the yoke structure provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the magnetic ring provided by this utility model;

[0026] Figure 3 This is a cross-sectional view of the yoke structure provided in one embodiment;

[0027] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0028] Figure 5 This is a cross-sectional view of the magnetic sleeve and magnetic shielding component provided in one embodiment;

[0029] Figure 6 This is a cross-sectional view of the yoke structure provided in another embodiment;

[0030] Figure 7 yes Figure 6 A magnified view of a section at point B in the middle;

[0031] Figure 8 This is a cross-sectional view of the magnetic sleeve and magnetic shielding component provided in another embodiment.

[0032] In the picture:

[0033] 1. Magnetic sleeve; 11. Limiting surface; 12. First section; 13. Second section; 14. Limiting part; 15. Clearance groove; 16. Machining groove; 17. Receiving through groove;

[0034] 2. Magnetic ring;

[0035] 3. Magnetic shielding components. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] The existing yoke structure has a magnetic flange at one end for mating with the inner hole of the solenoid valve housing, and a cylindrical structure at the other end for assembly into the inner hole of the coil bobbin. There are two methods for machining this yoke structure. The first method involves producing a blank through cold heading and then machining it into shape. This method has a small machining allowance but requires the creation of cold heading dies, resulting in higher costs and making it suitable only for continuous mass production. The second method involves directly machining a round bar stock. This method allows for one-step machining, but the machining volume is large, leading to significant material waste, low machining efficiency, and higher overall costs.

[0041] Therefore, such as Figures 1-8 As shown, this embodiment provides a yoke structure, which includes a magnetic sleeve 1 and a magnetic ring 2. The magnetic sleeve 1 includes a mounting part and a limiting surface 11. The limiting surface 11 is set at an angle to the outer peripheral surface of the mounting part. The magnetic ring 2 is interference-fitted onto the mounting part and abuts against the limiting surface 11.

[0042] This yoke structure consists of a magnetic sleeve 1 and a magnetic ring 2. During production, appropriate diameter and length bars can be selected based on the specific dimensions of the magnetic sleeve 1 and the magnetic ring 2, making the bars more suitable for processing requirements, reducing unnecessary material waste, decreasing machining volume, improving material utilization and processing efficiency, and lowering production costs. By processing the magnetic sleeve 1 and the magnetic ring 2 separately, if either one has a quality problem, it can be scrapped separately without affecting the other, minimizing scrap losses and reducing production costs. The magnetic ring 2 is installed in the mounting part by interference fitting and is axially limited by the limiting surface 11. When the magnetic ring 2 abuts against the limiting surface 11, it is installed in place. The limiting surface 11 provides a clear axial positioning reference for the magnetic ring 2, allowing it to be quickly installed in the correct position. The interference fit ensures a tight connection between the magnetic ring 2 and the magnetic sleeve 1, enhancing structural stability and preventing the magnetic ring 2 and magnetic sleeve 1 from easily loosening, thus ensuring the reliability of the yoke structure.

[0043] It should be noted that the included angle between the limiting surface 11 and the outer peripheral surface of the mounting part is set according to actual needs, and this embodiment does not limit it.

[0044] Optionally, the side of the magnetic ring 2 facing the limiting surface 11 can fit and abut against the limiting surface 11. That is, when the magnetic ring 2 is sleeved on the mounting part and installed in place, the side of the magnetic ring 2 fits and abuts against the limiting surface 11 to form surface contact. Compared with point contact or line contact, the limiting surface 11 can provide good mechanical support for the magnetic ring 2 and prevent the magnetic ring 2 from being displaced or loosened due to electromagnetic force or mechanical stress.

[0045] In one alternative embodiment, such as Figure 3 , Figure 4 As shown, after the magnetic ring 2 is installed in the mounting part, at least a portion of the side of the magnetic ring 2 facing the limiting surface 11 is perpendicular to the mounting part, and the limiting surface 11 is set perpendicular to the outer peripheral surface of the mounting part. When the magnetic ring 2 is installed in place, the side of the magnetic ring 2 facing the limiting surface 11 can fit and abut against the limiting surface 11.

[0046] In another alternative embodiment, such as Figure 6 , Figure 7 As shown, after the magnetic ring 2 is installed in the mounting part, at least a portion of the side of the magnetic ring 2 facing the limiting surface 11 is inclined to the mounting part, and the limiting surface 11 is inclined to the outer peripheral surface of the mounting part. At least a portion of the side of the magnetic ring 2 and the limiting surface 11 have the same inclination angle. When the magnetic ring 2 is installed in place, the side of the magnetic ring 2 facing the limiting surface 11 can fit and abut against the limiting surface 11.

[0047] In one alternative embodiment, such as Figures 3-5As shown, the magnetic sleeve 1 includes a first section 12 and a second section 13 coaxially connected. The outer diameter of the first section 12 is larger than the outer diameter of the second section 13 to form the aforementioned limiting surface 11. The second section 13 is the aforementioned mounting part. That is, along the axial direction of the magnetic sleeve 1, the magnetic sleeve 1 is divided into a first section 12 and a second section 13, wherein the outer diameter of the first section 12 is larger than the outer diameter of the second section 13. At this time, at least a portion of the side of the first section 12 connected to the second section 13 protrudes from the outer peripheral surface of the second section 13 to form the limiting surface 11. The second section 13 is the mounting part. When the magnetic ring 2 is installed to the magnetic sleeve 1, the magnetic ring 2 is interference-fitted to the first section 12 until the magnetic ring 2 abuts against the side wall of the first section 12, thus being installed in place.

[0048] Optionally, the first segment 12 and the second segment 13 are integrally formed. The integrally formed structure eliminates potential weak points at the segmented connection points, resulting in higher overall strength of the magnetic sleeve 1; it ensures coaxiality and dimensional accuracy between the first segment 12 and the second segment 13; and the integral forming reduces machining and assembly steps, lowering the complexity and error probability in the production process, and improving production efficiency. In specific implementation, a rod of suitable diameter is selected for machining to obtain a magnetic sleeve 1 with two segments of different outer diameters.

[0049] Specifically, in this embodiment, the first segment 12 and the second segment 13 are both cylindrical, and cylindrical rods are selected for processing. In this embodiment, the magnetic ring 2 is a ring-shaped structure, and cylindrical rods are also selected for processing.

[0050] In another alternative embodiment, such as Figures 6-8 As shown, a limiting part 14 protrudes from the outer periphery of the magnetic sleeve 1, and the side wall of the limiting part 14 facing the mounting part is the aforementioned limiting surface 11. When installing the magnetic ring 2 onto the magnetic sleeve 1, the magnetic ring 2 is interference-fitted onto the mounting part until the magnetic ring 2 abuts against the side wall of the limiting part 14, thus completing the installation.

[0051] Optionally, such as Figure 4 , Figure 7 As shown, a relief groove 15 is recessed on the outer periphery of the mounting part, and the relief groove 15 is located adjacent to the limiting surface 11. During the assembly of the magnetic ring 2 to the mounting part, the relief groove 15 can effectively prevent interference between the mounting part of the magnetic ring 2 and the magnetic sleeve 1 and the limiting part 14, ensuring that the magnetic ring 2 can be installed in place and preventing the magnetic ring 2 from being worn or scratched.

[0052] In this embodiment, the clearance groove 15 extends circumferentially around the mounting portion to form a ring shape. The clearance groove 15 is a semi-circular groove, and the groove wall of the clearance groove 15 is connected to the limiting surface 11.

[0053] Optionally, such as Figure 5 , Figure 8As shown, the outer periphery of the magnetic sleeve 1 is recessed with a machining groove 16. The yoke structure also includes a magnetic shielding component 3, which is disposed within the machining groove 16. The magnetic shielding component 3 is made of a non-magnetic material. By recessing the machining groove 16 on the magnetic sleeve 1, the magnetic shielding component 3 is disposed within the machining groove 16, thus assembling the magnetic shielding component 3 to the magnetic sleeve 1. When this yoke structure is applied to a solenoid valve, this non-magnetic magnetic shielding component 3 can redistribute the magnetic field lines generated by the coil being energized, ensuring that the electromagnetic force generated by the interaction between the coil and the magnetic sleeve 1 does not change due to different positions, thus ensuring the stability of the generated electromagnetic force.

[0054] In one optional embodiment, the magnetic shielding component 3 is made of copper.

[0055] It should be noted that the machining groove 16 is machined on the part of the magnetic sleeve 1 other than the mounting part. The machining groove 16 extends along the circumference of the magnetic sleeve 1. The specific position of the machining groove 16 depends on the actual needs. This embodiment does not limit this.

[0056] In the specific implementation process, after the magnetic sleeve 1 is clamped, a processing groove 16 is machined on the outer periphery of the magnetic sleeve 1; then, a copper weld is formed by welding in the processing groove 16, and the copper weld is the aforementioned magnetic shielding component 3.

[0057] Specifically, both the magnetic sleeve 1 and the magnetic ring 2 are made of magnetically conductive materials. When this yoke structure is applied to a solenoid valve, a magnetic field is generated when the coil is energized. This magnetic field acts on the yoke structure, and the high permeability of the magnetically conductive material makes it easy to magnetize the magnetic sleeve 1 and the magnetic ring 2, effectively transmitting and concentrating the magnetic field, thereby improving the response speed and sensitivity of the solenoid valve.

[0058] Optionally, such as Figure 5 , Figure 8 As shown, the magnetic sleeve 1 has a through groove 17 extending axially. When this yoke structure is applied to a solenoid valve, the moving iron can be slidably disposed within the through groove 17, so that the yoke structure supports the moving iron.

[0059] This embodiment also provides a solenoid valve, which includes the aforementioned yoke structure. By applying the aforementioned yoke structure to the solenoid valve, the production cost of the solenoid valve can be reduced, and the production efficiency can be increased.

[0060] In this embodiment, the yoke structure includes a magnetic sleeve 1 and a magnetic ring 2. The magnetic sleeve 1 and the magnetic ring 2 are machined separately. This allows for the selection of appropriate diameter and length bars based on the specific dimensions of the magnetic sleeve 1 and the magnetic ring 2. This makes the bars more suitable for processing requirements, reduces unnecessary material waste, decreases the amount of machining, improves material utilization and processing efficiency, and reduces production costs.

[0061] In this embodiment, the yoke structure is formed by separately molding the magnetic sleeve 1 and the magnetic ring 2 so that they do not interfere with each other. When one of them has a quality problem, it can be scrapped separately without affecting the other, thus minimizing scrap losses and reducing production costs.

[0062] In this embodiment, the yoke structure is designed so that the magnetic ring 2 is interference-fitted to the mounting part and axially limited by the limiting surface 11. When the magnetic ring 2 abuts against the limiting surface 11, it is installed in place. The limiting surface 11 provides a clear axial positioning reference for the magnetic ring 2, allowing the magnetic ring 2 to be quickly installed in the correct position. The interference fit ensures a tight connection between the magnetic ring 2 and the magnetic sleeve 1, enhancing structural stability and preventing the magnetic ring 2 and the magnetic sleeve 1 from easily coming loose, thus ensuring the reliability of the yoke structure.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A yoke structure, characterized in that, include: A magnetic sleeve (1) is provided, comprising a mounting portion and a limiting surface (11), wherein the limiting surface (11) is set at an angle to the outer peripheral surface of the mounting portion; A magnetic ring (2) is interference-fitted onto the mounting part and abuts against the limiting surface (11).

2. The yoke structure according to claim 1, characterized in that, The side of the magnetic ring (2) facing the limiting surface (11) can fit and abut against the limiting surface (11).

3. The yoke structure according to claim 1, characterized in that, The magnetic sleeve (1) includes a first section (12) and a second section (13) connected coaxially. The outer diameter of the first section (12) is larger than the outer diameter of the second section (13) to form the limiting surface (11). The second section (13) is the mounting part.

4. The yoke structure according to claim 3, characterized in that, The first segment (12) and the second segment (13) are integrally formed.

5. The yoke structure according to claim 1, characterized in that, The outer periphery of the magnetic sleeve (1) is provided with a limiting part (14), and the side wall of the limiting part (14) facing the mounting part is the limiting surface (11).

6. The yoke structure according to claim 1, characterized in that, The outer periphery of the mounting part is provided with a relief groove (15), and the opening position of the relief groove (15) is adjacent to the limiting surface (11).

7. The yoke structure according to claim 1, characterized in that, The magnetic sleeve (1) has a machining groove (16) recessed on its outer periphery, and the yoke structure further includes: Magnetic shielding component (3) is disposed in the processing groove (16) and the material of the magnetic shielding component (3) is a non-magnetic material.

8. The yoke structure according to claim 7, characterized in that, The material of the magnetic shielding component (3) is copper.

9. The yoke structure according to any one of claims 1-8, characterized in that, Both the magnetic sleeve (1) and the magnetic ring (2) are made of magnetic materials.

10. A solenoid valve, characterized in that, Includes the yoke structure as described in any one of claims 1-9.

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