Electromagnetic coil assembly, electromagnet and electromagnetic valve
By providing a crushable protrusion in the electromagnetic coil assembly, the problem of improper pressing force between the yoke and the shell is solved, compact assembly and high yield are achieved, and the risk of damage to the coil assembly is reduced.
Patent Information
- Application Number
- CN202422889176.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-26
AI Technical Summary
During the assembly process of existing electromagnetic coil assemblies, the pressing force between the yoke and the shell is improper, which causes the coil frame and the coil plastic layer to shake or be crushed easily. In addition, the processing dimensional accuracy requirements are high, which affects the yield rate.
The first and second protrusions are provided at the axial ends of the coil frame and the coil plastic coating, and the protrusions abut against the mounting structure and can be crushed, thereby ensuring that the yoke is compactly pressed after assembly, reducing the pressing force and lowering the risk of damage.
By providing the crushable protrusion, the compact assembly of the yoke is achieved, the press-fitting force is reduced, the damage of the coil assembly is avoided, and the yield rate is improved.
Smart Images
Figure CN223450629U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electromagnetic technology, in particular to an electromagnetic coil component, an electromagnet and a solenoid valve. Background Art
[0002] Electromagnetic coil assemblies are widely used. Electromagnets, solenoid valves and other products all require coil assemblies as power-driven actuators to realize their functions.
[0003] In the prior art, Figure 1 As shown, the electromagnetic coil assembly 100 ’ Including coil skeleton 20 ’ , housing 11 ’ , yoke 12 ’ and coil 30 ’ , coil 30 ’ Wound on the coil frame 20 ’ On the coil frame 20 ’ Through the coil plastic layer 40 ’ and coil 30 ’ After overmolding, the coil skeleton 20 ’ 、Coil 30 ’ And the coil plastic layer 40 ’ Assemble into housing 11 ’ Installation space 111 ’ Inside, then in the shell 11 ’ The end face is installed into the yoke 12 ’ , and yoke 12 ’ Located in installation space 111 ’ Inside.
[0004] like Figure 1 As shown, the installation space 111 ’ The axial dimension is L, the yoke is 12 ’ Along the installation space 111 ’ The axial dimension is L1, the coil frame is 20 ’ Along the installation space 111 ’ The axial dimension is L2, the coil frame is 20 ’ 、Coil 30 ’ , coil plastic layer 40 ’ and yoke 12 ’ Assemble into housing 11 ’ Installation space 111 ’ Inner rear, yoke 12 ’ The outer end surface and the shell 11 ’ The outer end surface is flush, so the design usually makes L ’ =L1 ’ +L2 ’However, in actual production, tolerances exist in the three dimensions L1, L2 and L, and when L1 ’ +L2 ’ <L ’ , the coil former 20 ’ is not compressed in the shell 11 ’ and is in a relaxed state, the coil former 20 ’ and the coil 30 ’ and the coil plastic layer 40 ’ thereon are easily shaken and do not meet the design requirements; when L1 ’ +L2 ’ >L ’ , a larger compression force is required to flatten the outer end face of the yoke 12 ’ and the outer end face of the shell 11 ’ , the coil former 20 ’ and the coil 30 ’ and the coil plastic layer 40 ’ thereon are at risk of being crushed, and the outer end face of the yoke 12 ’ and the outer end face of the shell 11 ’ may not be flattened.
[0005] Therefore, there is an urgent need for an electromagnetic coil assembly, an electromagnet and a solenoid valve to solve the above problems. Content of the utility model
[0006] The utility model aims to provide an electromagnetic coil assembly, an electromagnet and a solenoid valve, so that the yoke is compactly compressed after being installed in the shell, the compression force is effectively controlled, and the risk of the coil former main body, the coil and the coil plastic layer being crushed or the yoke being not compressed in place is eliminated.
[0007] To achieve the above-mentioned purpose, the following technical solutions are provided:
[0008] The electromagnetic coil assembly comprises a coil former, a coil plastic layer and a mounting structure, the coil plastic layer is arranged on the outer periphery of the coil former, the mounting structure is wrapped on the outer periphery of the coil plastic layer, the coil former comprises a former main body and a first protrusion, the first protrusion is protruded on at least one end of the former main body in the axial direction, the first protrusion is in abutment with the mounting structure and can be crushed by the mounting structure;
[0009] And / or, the coil plastic layer comprises a plastic layer main body and a second protrusion, the second protrusion is protruded on at least one end of the plastic layer main body in the axial direction, the second protrusion is in abutment with the mounting structure and can be crushed by the mounting structure.
[0010] As an optional solution, the mounting structure comprises:
[0011] A housing having a mounting space, the coil plastic layer and the coil skeleton are located in the mounting space, the housing extends inwardly at one axial end to form an abutting portion, the coil skeleton and the coil plastic layer are in abutment with the abutting portion;
[0012] A yoke arranged in the mounting space and located at one end of the housing away from the abutting portion.
[0013] As an option, the axial dimension of the mounting space is L, the axial dimension of the yoke along the mounting space is L1, the axial dimension of the skeleton body along the mounting space is L2, the axial dimension of the first protrusion and the second protrusion along the mounting space is h, L1+L2+h>L.
[0014] As an option, the coil skeleton is provided with a first groove, and the first protrusion is located in the first groove;
[0015] And / or, the coil plastic layer is provided with a second groove, and the second protrusion is located in the second groove.
[0016] As an option, the number of the first protrusion located at one axial end of the skeleton body is at least three, the at least three first protrusions are arranged in intervals along the circumferential direction of the skeleton body, the number of the first groove is at least three, and the first protrusion and the first groove are one-to-one corresponding.
[0017] As an option, the number of the second protrusion located at one axial end of the plastic layer body is at least three, the at least three second protrusions are arranged in intervals along the circumferential direction of the plastic layer body, the number of the second groove is at least three, and the second protrusion and the second groove are one-to-one corresponding.
[0018] As an option, the first protrusion is columnar or conical;
[0019] And / or, the second protrusion is columnar or conical.
[0020] As an option, the first protrusion is integrally formed with the skeleton body;
[0021] And / or, the second protrusion is integrally formed with the plastic layer body.
[0022] An electromagnet comprising the electromagnetic coil assembly.
[0023] An electromagnetic valve comprising the electromagnetic coil assembly.
[0024] Compared with the prior art, the electromagnetic coil assembly has the following beneficial effects:
[0025] The electromagnetic coil assembly provided by the utility model has high yield rate.
[0026] The electromagnet provided by the utility model has high yield rate by using the electromagnetic coil assembly.
[0027] The electromagnetic valve provided by the utility model has high yield rate by using the electromagnetic coil assembly. BRIEF DESCRIPTION OF DRAWINGS
[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the following description of the embodiments of the utility model will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings by those skilled in the art without any creative labor.
[0029] Figure 1 It is a structural schematic view of the electromagnetic coil assembly in the prior art.
[0030] Figure 2 It is a structural schematic view of the electromagnetic coil assembly provided by the embodiments of the utility model.
[0031] Figure 3 It is a partial structural schematic view of the electromagnetic coil assembly provided by the embodiments of the utility model.
[0032] REFERENCE SIGNS:
[0033] 100, electromagnetic coil assembly;
[0034] 10, mounting structure; 11, shell; 111, mounting space; 112, abutting portion; 12, yoke;
[0035] 20, coil skeleton; 21, first protrusion; 22, first recess; 23, skeleton main body;
[0036] 30, coil;
[0037] 40, coil plastic layer;
[0038] 100 ’ , electromagnetic coil assembly; 11 ’ , housing; 12 ’ , yoke; 20 ’ , coil former; 30 ’ , coil; 40 ’ , coil potting layer. DETAILED DESCRIPTION
[0039] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners according to other embodiments, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.
[0040] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0041] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0042] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0043] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.
[0044] It should be noted that if an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not mean the only implementation.
[0045] In the prior art, as shown in Figure 1 , an electromagnetic coil assembly 100 ’ includes a coil former 20 ’ , a housing 11 ’ , a yoke 12 ’ and a coil 30 ’ , the coil 30 ’ is wound on the coil former 20 ’ , the coil former 20 ’ is injection molded together with the coil 30 ’ and the coil potting layer 40 ’ , the coil former 20 ’ , the coil 30 ’ and the coil potting layer 40 ’ are assembled into the mounting space 111 ’ of the housing 11 ’ , the yoke 12 ’ is installed on the end face of the housing 11 ’ , and the yoke 12 ’ is located in the mounting space 111 ’ .
[0046] As shown in Figure 1 , the axial dimension of the mounting space 111 ’ is L, the axial dimension of the yoke 12 ’ along the mounting space 111 ’ is L1, the axial dimension of the coil former 20’ Along the installation space 111 ’ The axial dimension is L2, the coil frame is 20 ’ 、Coil 30 ’ , coil plastic layer 40 ’ and yoke 12 ’ Assemble into housing 11 ’ Installation space 111 ’ Inner rear, yoke 12 ’ The outer end surface and the shell 11 ’ The outer end surface is flush, so the design usually makes L ’ =L1 ’ +L2 ’ However, in the actual production process, there are tolerances in the three dimensions of L1, L2 and L. ’ +L2 ’ <L ’ When the coil frame 20 ’ In shell 11 ’ The inner part is not compressed and is in a relaxed state. The coil skeleton 20 ’ And the coil 30 thereon ’ and coil plastic layer 40 ’ Easy to shake, does not meet the design requirements; when L1 ’ +L2 ’ >L ’ When the yoke 12 ’ The outer end surface and the shell 11 ’ When the outer end surface is flattened, a larger pressing force is required. ’ And the coil 30 thereon ’ and coil plastic layer 40 ’ There is a risk of being crushed, and even the yoke 12 ’ The outer end surface and the shell 11 ’ The outer end surface is flattened.
[0047] In order to solve the above problems, Figure 2 and Figure 3As shown, the electromagnetic coil assembly 100 provided by the embodiment includes a coil former 20, a coil plastic layer 40, and a mounting structure 10, the mounting structure 10 includes a shell 11 and a yoke 12, the coil plastic layer 40 is arranged on the outer periphery of the coil former 20, the shell 11 is wrapped on the outer periphery of the coil plastic layer 40, the yoke 12 is arranged at one end of the shell 11 in the axial direction, the coil former 20 includes a former main body 23 and a first protrusion 21, the first protrusion 21 is protruded at least one end of the former main body 23 in the axial direction, the first protrusion 21 is in abutment with the mounting structure 10 and can be crushed by the mounting structure 10; and / or, the coil plastic layer 40 includes a plastic layer main body and a second protrusion, the second protrusion is protruded at least one end of the plastic layer main body in the axial direction, the second protrusion is in abutment with the mounting structure 10 and can be crushed by the mounting structure 10, through the above arrangement, after the yoke 12 is assembled into the mounting space 111 of the shell 11, the yoke 12 is tightly pressed after being assembled into the shell 11, because the size of the first protrusion 21 and the second protrusion is relatively small compared with the size of the coil former 20 and the coil plastic layer 40 as a whole, so that a large force is not required when being crushed, so that the pressing force is not too large when assembling, the pressing force is effectively controlled, the risk that the former main body 23, the coil 30 and the coil plastic layer 40 are crushed or the yoke 12 is not pressed in place is eliminated, and the yield of the electromagnetic coil assembly 100 is improved; at the same time, because the first protrusion 21 and the second protrusion are arranged, the precision requirement of the machining size of the coil former 20, the coil plastic layer 40 and the yoke 12 is greatly reduced.
[0048] It can be understood that the crushing refers to that the shell 11 and the yoke 12 crush and even break the first protrusion 21 and the second protrusion.
[0049] As shown in Figure 2 and Figure 3 , the shell 11 has a mounting space 111, the coil plastic layer 40 and the coil former 20 are located in the mounting space 111, one end of the shell 11 in the axial direction extends inward to form an abutment portion 112, the coil former 20 and the coil plastic layer 40 are in abutment with the abutment portion 112, the yoke 12 is arranged in the mounting space 111 and located at one end of the shell 11 away from the abutment portion 112, the yoke 12 is in interference fit with the shell 11 to realize the assembly of the electromagnetic coil assembly 100.
[0050] The axial dimension of the mounting space 111 is L, the axial dimension of the yoke 12 along the mounting space 111 is L1, the axial dimension of the former main body 23 along the mounting space 111 is L2, the axial dimension of the first protrusion 21 and the second protrusion along the mounting space 111 is h, L1+L2+h>L, so that the first protrusion 21 and the second protrusion can be crushed when the outer end surface of the yoke 12 is flattened with the outer end surface of the shell 11.
[0051] Optionally, the coil framework 20 is provided with a first groove 22, and the first protrusion 21 is located in the first groove 22; and / or, the coil plastic layer 40 is provided with a second groove, and the second protrusion is located in the second groove. The first groove 22 and the second groove provide a space for the first protrusion 21 and the second protrusion to be crushed and deformed, respectively. At the same time, the first groove 22 and the second groove can collect the debris generated when the first protrusion 21 and the second protrusion are crushed, thereby avoiding the adverse effects of the debris generated when the first protrusion 21 and the second protrusion are crushed on the electromagnetic coil assembly 100.
[0052] Optionally, the number of the first protrusions 21 located at one axial end of the framework main body 23 is at least three, the at least three first protrusions 21 are arranged at intervals along the circumference of the coil framework 20, the number of the first grooves 22 is at least three, the first protrusions 21 and the first grooves 22 are arranged one by one, and the at least three first protrusions 21 are arranged at intervals along the circumference of the coil framework 20. This can make the framework main body 23 bear force evenly.
[0053] Optionally, the number of the second protrusions located at one axial end of the plastic layer main body is at least three, the at least three second protrusions are arranged at intervals along the circumference of the plastic layer main body, the number of the second grooves is at least three, the second protrusions and the second grooves are arranged one by one, and the at least three second protrusions are arranged at intervals along the circumference of the plastic layer main body. This can make the plastic layer main body bear force evenly.
[0054] Optionally, the first protrusion 21 is columnar or conical; and / or, the second protrusion is columnar or conical. The columnar or conical first protrusion 21 and the second protrusion facilitate abutting with the mounting structure 10.
[0055] Optionally, the first protrusion 21 is integrally formed with the framework main body 23; and / or, the second protrusion is integrally formed with the plastic layer main body. This avoids the need to separately provide a connecting structure between the first protrusion 21 and the framework main body 23 and between the second protrusion and the plastic layer main body, and facilitates processing.
[0056] The present embodiment also provides an electromagnet including a core and the above-described electromagnetic coil assembly 100. The electromagnetic coil assembly 100 can magnetize the core after being energized, so as to attract ferromagnetic substances. The electromagnet has a high yield rate by using the above-described electromagnetic coil assembly 100.
[0057] The present embodiment also provides an electromagnetic valve including a moving iron, a spool, a valve sleeve, and the above-described electromagnetic coil assembly 100. The spool is movably arranged in the valve sleeve and connected with the moving iron. The moving iron is movably arranged in the electromagnetic coil assembly 100. The electromagnetic coil assembly 100 can drive the moving iron to move along the axial direction thereof, thereby driving the spool to move relative to the valve sleeve, so as to open or block a valve port on the valve sleeve. The electromagnetic valve has a high yield rate by using the above-described electromagnetic coil assembly 100.
[0058] It is noted that, in the description of the specification, descriptions referring to the terms "some embodiments", "other embodiments", and the like indicate that the particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the present application. The appearances of the above-described terms in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.
[0059] The above only is the preferred embodiment of the present application and the applied technical principles. The person skilled in the art can understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by the person skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims
1. An electromagnetic coil assembly, characterized in that It comprises a coil skeleton (20), a coil plastic coating layer (40) and a mounting structure (10), wherein the coil plastic coating layer (40) is arranged on the periphery of the coil skeleton (20), and the mounting structure (10) is covered on the periphery of the coil plastic coating layer (40); The coil skeleton (20) comprises a skeleton body (23) and a first protrusion (21), wherein the first protrusion (21) is protruding from at least one axial end of the skeleton body (23), and the first protrusion (21) abuts against the mounting structure (10) and can be crushed by the mounting structure (10); And / or, the coil plastic coating layer (40) includes a plastic coating layer body and a second protrusion, the second protrusion is protruded at at least one end of the plastic coating layer body in the axial direction, the second protrusion abuts against the mounting structure (10) and can be crushed by the mounting structure (10).
2. The electromagnetic coil assembly according to claim 1, wherein: The mounting structure (10) comprises: A housing (11), the housing (11) having an installation space (111), the coil plastic coating layer (40) and the coil skeleton (20) both being located in the installation space (111), one axial end of the housing (11) extending inward to form an abutment portion (112), the coil skeleton (20) and the coil plastic coating layer (40) both abutting against the abutment portion (112); A yoke (12) is arranged in the installation space (111) and is located at an end of the housing (11) away from the abutment portion (112).
3. The electromagnetic coil assembly according to claim 2, wherein: The axial dimension of the installation space (111) is L, the axial dimension of the yoke (12) along the installation space (111) is L1, the axial dimension of the skeleton body (23) along the installation space (111) is L2, and the axial dimensions of the first protrusion (21) and the second protrusion along the installation space (111) are both h, and L1+L2+h>L.
4. The electromagnetic coil assembly according to claim 1, wherein: The coil skeleton (20) is provided with a first groove (22), and the first protrusion (21) is located in the first groove (22); And / or, the coil plastic coating layer (40) is provided with a second groove, and the second protrusion is located in the second groove.
5. The electromagnetic coil assembly according to claim 4, characterized in that The number of the first protrusions (21) located at one axial end of the skeleton body (23) is at least three, and the at least three first protrusions (21) are spaced apart along the circumference of the skeleton body (23). The number of the first grooves (22) is at least three, and the first protrusions (21) and the first grooves (22) are arranged in a one-to-one correspondence.
6. The electromagnetic coil assembly according to claim 4, wherein: The number of the second protrusions located at one axial end of the plastic-coated layer body is at least three, and the at least three second protrusions are arranged at intervals along the circumference of the plastic-coated layer body. The number of the second grooves is at least three, and the second protrusions and the second grooves are arranged in a one-to-one correspondence.
7. The electromagnetic coil assembly according to claim 1, wherein: The first protrusion (21) is columnar or conical; And / or, the second protrusion is columnar or conical.
8. The electromagnetic coil assembly according to claim 1, wherein: The first protrusion (21) and the skeleton body (23) are integrally formed; And / or, the second protrusion and the plastic-coating layer body are integrally formed.
9. An electromagnet, characterized in that The electromagnetic coil assembly comprises the electromagnetic coil assembly according to any one of claims 1 to 8.
10. Solenoid valve, characterized in that, The electromagnetic coil assembly comprises the electromagnetic coil assembly according to any one of claims 1 to 8.