Electromagnetic assembly of a relay and relay

Abstract

The application discloses an electromagnetic assembly of a relay and the relay, which comprises a coil holder, a yoke and an iron core. The iron core is inserted into the coil holder along a first direction of the coil holder. The coil holder comprises a first positioning part and a second positioning part, and the first positioning part and the second positioning part are oppositely arranged at two ends of the coil holder along the first direction. The first positioning part comprises a positioning groove, a first end of the yoke is inserted into the positioning groove, the yoke is limited in the first direction by the positioning groove, the yoke is limited in a second direction by the positioning groove, and the yoke inserted into the positioning groove is connected with the iron core. The second positioning part comprises a positioning through groove, the length direction of the positioning through groove is parallel to the second direction, a second end of the yoke is inserted into the positioning through groove, and the yoke is limited in a third direction by the positioning through groove. The yoke is positioned in the first direction, the second direction and the third direction, respectively, so that the position deflection of the yoke is avoided, the parallel degree difference between the magnetic pole surfaces of the yoke and the iron core is small, and the voltage deviation problem caused by the parallel degree difference is solved.

Description

Technical Field

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

[0002] A relay with electromagnetic components is an electronic control device that uses electromagnetic principles to achieve automatic circuit switching. Its electromagnetic components typically include an iron core, a coil frame, and a yoke. The installation process usually involves first assembling and positioning the yoke and coil frame, then inserting the iron core into the holes in the yoke and coil frame, and finally fixing the yoke, coil frame, and iron core by riveting.

[0003] However, during the assembly of the iron core, the yoke is prone to positional deviation, resulting in a large difference in parallelism between the yoke and the magnetic pole surface of the iron core, which in turn leads to an increase in voltage deviation. Utility Model Content

[0004] To address the problem that positional deviation easily occurs during the assembly of the yoke, resulting in large discrepancies in the parallelism of the magnetic pole surfaces of the yoke and the iron core, and consequently increasing voltage deviation, this utility model is proposed to provide an electromagnetic component and relay that overcomes or at least partially solves the above-mentioned problems.

[0005] According to a first aspect of this utility model, an electromagnetic component for a relay is provided. The electromagnetic component includes a coil frame, a yoke, and an iron core. The iron core is inserted into the coil frame along a first direction. The coil frame includes:

[0006] The first positioning part and the second positioning part are distributed opposite to each other at both ends of the coil frame along the first direction;

[0007] The first positioning part includes a positioning groove, and the first end of the yoke is inserted into the positioning groove so as to limit the yoke in the first direction and limit the yoke in the second direction through the positioning groove, wherein the yoke inserted into the positioning groove is connected to the iron core.

[0008] The second positioning part includes a positioning through groove, the length direction of which is parallel to the second direction. The second end of the yoke is inserted into the positioning through groove to limit the yoke in a third direction through the positioning through groove. The first direction, the second direction, and the third direction are arranged perpendicularly to each other.

[0009] Some optional utility model contents include a yoke comprising a yoke body, a first yoke arm, and a second yoke arm, wherein the first yoke arm and the second yoke arm are distributed opposite to each other at both ends of the yoke body along the first direction; wherein,

[0010] The first yoke arm is inserted into the positioning groove, and the first yoke arm has assembly holes distributed along the first direction, and the iron core is inserted into the assembly holes;

[0011] The second yoke arm is inserted into the positioning slot and forms a limiting fit with the positioning slot.

[0012] Some optional utility model contents, the positioning groove has four side groove walls and a bottom groove wall, the four side groove walls and the bottom groove wall surround to form the positioning groove, wherein, the two side groove walls of the positioning groove are distributed opposite to each other along the first direction and cooperate with the shape of the first yoke arm.

[0013] Some optional utility model contents include that the coil frame further includes a bobbin, which is located between the first positioning part and the second positioning part, and is integrally formed with the first positioning part and the second positioning part;

[0014] The axial direction of the spool is parallel to the first direction, and the central axis of the spool has a central mounting through hole for the iron core to pass through. The first end of the spool forms the side groove arm of the positioning groove distributed along the first direction and close to the spool.

[0015] Some optional utility model contents, the bottom groove wall of the positioning groove distributed along the second direction abuts against the first yoke arm.

[0016] Some optional utility model contents, the cross-sectional shape of the positioning through groove forming a first plane along the first direction and the third direction is a completely closed square ring;

[0017] The cross-sectional area of ​​the positioning slot on the first plane gradually decreases from the direction near the yoke body to the direction near the coil frame, so as to guide the second yoke arm into the positioning slot.

[0018] Some optional utility model contents, the second yoke arm and the two groove walls of the positioning through groove along the third direction form a limiting fit;

[0019] The second yoke arm and the positioning slot form a clearance fit along the first direction.

[0020] In some optional utility model contents, two second yoke arms are provided, and the two second yoke arms are distributed relative to each other on the yoke body along the third direction;

[0021] The iron core is located at the center of the distribution interval of the two second yoke arms along the third direction, and the iron core is arranged parallel to the two second yoke arms respectively.

[0022] In some optional utility model contents, the two end faces of the iron core distributed upward along the third party are respectively arranged parallel to the end face of the second yoke arm distributed upward along the third party and close to the iron core.

[0023] In some optional utility model contents, the second positioning part further includes a connecting edge, which connects the two positioning through slots along the third direction, and the connecting edge is integrally formed with the second positioning part.

[0024] In some optional utility model contents, the second end of the spool forms the side groove arm of the positioning through groove distributed along the first direction and close to the spool.

[0025] Based on a second aspect of this utility model, a relay is also provided, the relay comprising the electromagnetic components of the relay as described in any of the foregoing utility model contents.

[0026] The beneficial effects of this application are as follows:

[0027] The electromagnetic components of the relay provided in this application may include a coil frame, a yoke, and an iron core. The iron core is inserted into the coil frame along a first direction. The coil frame includes a first positioning part and a second positioning part, which are distributed opposite to each other at both ends of the coil frame along the first direction. The first positioning part includes a positioning groove, into which the first end of the yoke is inserted to limit the yoke in the first direction and the second direction. The yoke inserted into the positioning groove is connected to the iron core. The second positioning part includes a positioning slot, the length direction of which is parallel to the second direction. The second end of the yoke is inserted into the positioning slot to limit the yoke in the third direction. Thus, by engaging the yoke with the positioning groove and the positioning slot at both ends of the coil frame, the yoke is positioned in the first, second, and third directions respectively, avoiding the problem of large voltage deviation caused by the yoke's positional deflection and the large heat dissipation due to the parallelism of the magnetic pole surfaces between the yoke and the iron core. This improves the assembly accuracy of the yoke and coil frame, and can reduce voltage dispersion of electromagnetic components and improve the consistency of electrical parameters of the product.

[0028] Furthermore, the aforementioned structural limiting mechanism allows the coil frame and yoke to form a rigid whole, preventing the coil from shifting under electromagnetic attraction or vibration. This ensures the relative positions of the coil, core, and yoke are stable, and also stabilizes the electromagnetic attraction.

[0029] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0031] In the attached diagram:

[0032] Figure 1 This is a first three-dimensional structural schematic diagram of an electromagnetic component of a relay provided in an embodiment of this application;

[0033] Figure 2 This is an exploded structural diagram of the electromagnetic component of a relay provided in an embodiment of this application;

[0034] Figure 3 This is a second three-dimensional structural schematic diagram of an electromagnetic component of a relay provided in an embodiment of this application;

[0035] Figure 4 This is a right-side view of the electromagnetic component of a relay provided in an embodiment of this application;

[0036] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0037] Figure 6 yes Figure 5 Enlarged structural diagram at point B;

[0038] Figure 7 This is a rear view structural schematic diagram of the electromagnetic component of a relay provided in an embodiment of this application;

[0039] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure at point C;

[0040] Figure 9 This is a left-side view of the electromagnetic component of a relay provided in an embodiment of this application;

[0041] Figure 10 yes Figure 9 Enlarged schematic diagram of the structure at point DD;

[0042] Figure label:

[0043] 100. Coil frame; 110. First positioning part; 111. Positioning groove; 120. Second positioning part; 121. Positioning through groove; 122. Connecting edge; 130. Bollard; 131. Center mounting through hole; 140. Coil; 200. Yoke; 210. Yoke body; 220. First yoke arm; 221. Assembly hole; 230. Second yoke arm; 300. Iron core; 310. Limiting protrusion. Detailed Implementation

[0044] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0045] Reference Figures 1 to 10 This application provides an electromagnetic component for a relay, and also provides a relay itself. The electromagnetic component is applied to a relay, and this embodiment will specifically describe the technical solution of the electromagnetic component. The electromagnetic component may include a coil frame 100, a yoke 200, and an iron core 300.

[0046] The coil frame 100 is a structural component in the relay that supports and fixes the coil 140. It serves as the carrier of the coil 140 and can also be used for insulation and positioning of the coil 140, the iron core 300, and the yoke 200. The coil 140 is wound on a bobbin 130 of the coil frame 100. The bobbin 130 is hollow. The iron core 300, along a first direction of the coil frame 100, passes through a central mounting hole 131 in the bobbin 130 and forms a limiting fit with the bobbin 130. The iron core 300 penetrates the bobbin 130, and its two ends extend beyond the two ends of the bobbin 130 distributed along the first direction. For example, the first direction can be aligned with the X-axis. As a magnetic conductor, the iron core 300 can enhance the magnetic field strength generated by the coil 140 after it is energized.

[0047] Reference Figure 1 , Figure 2 as well as Figure 3As shown, the coil frame 100 may further include a first positioning part 110 and a second positioning part 120, which are distributed opposite to each other at both ends of the coil frame 100 along the first direction. For example, the first positioning part 110 is located at the first end of the bobbin 130, and the second positioning part 120 is located at the second end of the bobbin 130. The bobbin 130, the first positioning part 110, and the second positioning part 120 are integral structures. For example, the bobbin 130, the first positioning part 110, and the second positioning part 120 can be integrally formed by injection molding, thereby reducing the assembly tolerances accumulated during assembly. The first positioning part 110 may include a positioning groove 111, in which the first end of the yoke 200 is inserted to form a first-direction limit on the yoke 200 and a second-direction limit on the yoke 200. The second direction is perpendicular to the first direction; for example, the second direction may be aligned with the Z-axis.

[0048] Reference Figure 5 and Figure 6 As shown, the first end of the yoke 200 matches the shape of the groove wall of the positioning groove 111. When the yoke 200 is inserted into the positioning groove 111 from bottom to top, the positioning groove 111 limits the first end of the yoke 200, preventing the yoke 200 from moving back and forth, thus limiting the yoke 200 in the first direction. The positioning through groove 121 also limits the yoke 200 from moving up and down, thus limiting the yoke 200 in the second direction. Furthermore, the yoke 200 inserted into the positioning groove 111 is connected to the iron core 300. For example, a rigid connection between the yoke 200 and the iron core 300 can be achieved through riveting, welding, or other connection methods.

[0049] Reference Figure 8 As shown, the second end of the yoke 200 and the iron core 300 maintain a magnetic gap d along a third direction, wherein the third direction is perpendicular to the first and second directions respectively, and the third direction can be aligned with the Y-axis. The magnetic gap d is used to reserve space for the swinging of the armature assembly of the relay's electromagnetic component. When the relay is engaged, the armature assembly swings under the electromagnetic attraction between the yoke 200 and the iron core 300, causing the armature assembly to contact the iron core 300, so that the magnetic field in the relay's electromagnetic component can sequentially pass through the iron core 300, yoke 200, armature assembly, and iron core 300 to form a closed magnetic circuit.

[0050] Reference Figure 1 , Figure 2 , Figure 8 as well as Figure 10As shown, the second positioning part 120 may include a positioning through groove 121, the length direction of which is parallel to the second direction. That is, the positioning through groove 121 extends through the second positioning part 120 along the second direction, allowing the second end of the yoke 200 to be inserted into the positioning through groove 121 when it is assembled with the coil frame 100 from bottom to top, thus providing a third-dimensional limit for the yoke 200. Therefore, by limiting the second end of the yoke 200 through the positioning through groove 121, left and right deflection of the yoke 200 is prevented.

[0051] Reference Figure 1 , Figure 2 , Figure 5 , Figure 8 as well as Figure 9 As shown, a limiting protrusion 310 is provided at one end of the iron core 300. The limiting protrusion 310 is integrally formed with the iron core 300. When the iron core 300 is assembled along the axial direction of the wire shaft 130, the limiting protrusion 310 can abut against one end of the coil frame 100 in the axial direction, thereby positioning the iron core 300 in the first direction and preventing the iron core 300 from shaking and causing magnetic circuit disorder.

[0052] In summary, by engaging the yoke 200 with the positioning grooves 111 and positioning through slots 121 located at both ends of the coil frame 100, the yoke 200 is positioned in the first, second, and third directions, respectively. This avoids voltage deviations caused by component tolerances and assembly variations between the yoke 200 and the coil frame 100. Consequently, the assembly accuracy of the yoke 200 and the coil frame 100 is improved, and voltage variations in the electromagnetic components are reduced, while the consistency of the product's electrical parameters is enhanced.

[0053] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 10 As shown, in one or more embodiments, the yoke 200 may include a yoke body 210, a first yoke arm 220, and a second yoke arm 230.

[0054] The yoke body 210, the first yoke arm 220, and the second yoke arm 230 can be integrally formed. For example, the first yoke arm 220 and the second yoke arm 230 can be obtained by bending the yoke body 210 along a second direction and are respectively positioned towards the coil frame 100. The yoke body 210, the first yoke arm 220, and the second yoke arm 230 can be made of a magnetically conductive material. The first yoke arm 220 and the second yoke arm 230 are distributed opposite each other at both ends of the yoke body 210 along the first direction. For example, the first yoke arm 220 is located at the first end of the yoke body 210, and the second yoke arm 230 is located at the second end of the yoke body 210. The first yoke arm 220 is positioned corresponding to the first positioning part 110, so that when the first yoke arm 220 is assembled with the coil frame 100 from bottom to top, the first yoke arm 220 can be inserted into the positioning groove 111, thereby limiting the first yoke arm 220 in the first direction and the second direction respectively, and improving the positioning accuracy between the first yoke arm 220 and the coil frame 100.

[0055] Reference Figure 3 , Figure 4 as well as Figure 5 As shown, the first yoke arm 220 has an assembly hole 221 along the first direction. The central axis of the assembly hole 221 along the first direction coincides with the central axis of the bobbin 130. When the yoke 200 and the coil frame 100 are assembled with high precision, and the iron core 300 passes through the first end of the coil frame 100 from the second end along the first direction, the first end of the iron core 300 can accurately pass through the assembly hole 221. This achieves the assembly and positioning of the coil frame 100, the yoke 200, and the iron core 300. Finally, a rigid connection between the yoke 200 and the iron core 300 can be achieved through riveting, welding, or other connection methods. Direct contact between the yoke 200 and the iron core 300 can be achieved through the assembly hole 221, reducing the magnetic resistance between the iron core 300 and the first yoke arm 220. This allows the magnetic field in the electromagnetic components of the relay to sequentially pass through the iron core 300, the first yoke arm 220, the yoke body 210, the second yoke arm 230, the armature assembly, and the iron core 300 to form a closed magnetic circuit.

[0056] The second yoke arm 230 corresponds to the second positioning part 120, so that when the second yoke arm 230 is assembled with the coil frame 100 from bottom to top, the second yoke arm 230 can be inserted into the positioning through groove 121. The shape fit between the positioning through groove 121 and the second yoke arm 230 limits the second yoke arm 230 in a third direction. Therefore, the yoke 200 as a whole can be positioned in the first, second, and third directions respectively, avoiding voltage deviations caused by component tolerances and assembly variations between the yoke 200 and the coil frame 100. This improves the assembly accuracy of the yoke 200 and the coil frame 100, reduces voltage variations in the electromagnetic components, and improves the consistency of the product's electrical parameters.

[0057] Reference Figure 3 , Figure 5 as well as Figure 6 As shown, in one or more embodiments, the positioning groove 111 has four side groove walls and a bottom groove wall.

[0058] Four side groove walls and a bottom groove wall form a positioning groove 111. Two of the side groove walls of the positioning groove 111, which are oppositely distributed along a first direction, mate with the shape of the first yoke arm 220 to limit the yoke 200 in the first direction. For example, the two side groove walls oppositely distributed along the first direction abut against the inserted first yoke arm 220, thereby preventing the yoke 200 from moving back and forth along the X-axis.

[0059] The first end of the spool 130 forms a positioning groove 111 distributed along the first direction and close to the side groove arm of the spool 130. That is, the first positioning part 110 matches the shape of the first end of the spool 130 to form a positioning groove 111 that limits the first yoke arm 220 in the first direction. This simplifies the structural complexity and material usage of the first positioning part 110, improves the assembly accuracy between the spool 130 and the first yoke arm 220, and reduces voltage deviation caused by assembly tolerance.

[0060] In one embodiment, the two sidewalls of the positioning groove 111, which are oppositely distributed along a third direction, form a clearance fit with the first yoke arm 220. That is, the width between the two sidewalls of the positioning groove 111, which are oppositely distributed along a third direction, is greater than the width of the first yoke arm 220 along a third direction, thus preventing the yoke 200 from over-positioning along a third direction. It can be understood that the yoke 200 is limited in a third direction by the second yoke arm 230 and the positioning through groove 121.

[0061] The bottom wall of the positioning groove 111, distributed along the second direction, abuts against the first yoke arm 220 to limit the yoke 200 in the second direction. For example, the bottom wall of the positioning groove 111, distributed along the Z-axis, abuts against the first yoke arm 220, thereby restricting the first yoke arm 220 from moving along the Z-axis.

[0062] Reference Figure 1 and Figure 2As shown, in one or more embodiments, the cross-sectional shape of the first plane formed by the positioning groove 121 along the first direction and the third direction is a completely closed square annulus. That is, with the distribution of the positioning groove 121 towards the second direction as the axial direction of the positioning groove 121, the circumferential direction of the positioning groove 121 is completely closed. This reduces the manufacturing difficulty of creating the positioning groove 121 on the second positioning part 120. Furthermore, the completely closed configuration of the positioning groove 121 improves the limiting stiffness of the positioning groove 121 on the second yoke arm 230. Thus, under long-term stress or vibration of the electromagnetic components of the relay, it avoids the problem of slight deformation of the side groove arm of the positioning groove 121, which could lead to a decrease in positioning accuracy between the second yoke arm 230 and the positioning groove 121, exhibiting excellent anti-deformation performance.

[0063] Reference Figure 8 As shown, the cross-sectional area of ​​the positioning slot 121 on the first plane gradually decreases from the direction near the yoke body 210 to the direction near the coil frame 100. When assembling the second yoke arm 230 with the second positioning part 120, the cross-sectional area of ​​a portion of the positioning slots 121 distributed along the second direction on the first plane gradually decreases from the direction near the yoke body 210 to the direction near the coil frame 100. That is, the second yoke arm 230 is inserted into the positioning slot 121 of the second positioning part 120 from bottom to top. Since the cross-sectional area of ​​the positioning slot 121 is larger than the cross-sectional area of ​​the second yoke arm 230 on the first plane, the second yoke arm 230 can be easily inserted into the positioning slot 121. As the cross-sectional area of ​​the positioning slot 121 gradually decreases, the second yoke arm 230 inserted into the positioning slot 121 is gradually guided until the second yoke arm 230 and the positioning slot 121 form a limiting fit, thereby limiting the position of the second yoke arm 230. Among them, limit fit refers to interference fit or transition fit.

[0064] In one embodiment, the second yoke arm 230 and the positioning groove 121 form a limiting fit along the third direction, and the two groove walls of the positioning groove 121 along the third direction restrict the degree of freedom of the second yoke arm 230 in the third direction. The second yoke arm 230 and the positioning groove 121 form a clearance fit along the first direction to prevent the yoke 200 from over-positioning along the first direction. It can be understood that the yoke 200 is limited in the first direction by the cooperation of the first yoke arm 220 and the positioning groove 111.

[0065] In another embodiment, the second yoke arm 230 and the positioning groove 121 form a limiting fit along a third direction, and the two groove walls of the positioning groove 121 along the third direction restrict the degree of freedom of the second yoke arm 230 in the third direction. The second yoke arm 230 and the positioning groove 121 form a limiting fit along a first direction, and the two groove walls of the positioning groove 121 along the first direction restrict the degree of freedom of the second yoke arm 230 in the first direction. In addition, the yoke 200 is limited in the first direction by the cooperation of the first yoke arm 220 and the positioning groove 111, so that the coil frame 100 can more reliably position the yoke 200 in the first direction.

[0066] Reference Figure 1 As shown, in one or more embodiments, the two end faces of the iron core 300 distributed along a third direction are respectively arranged parallel to the end face of the second yoke arm 230 distributed along a third direction and close to the iron core 300. For example, the end face of the second yoke arm 230 distributed along a third direction and close to the iron core 300, and the end face of the iron core 300 distributed along a third direction, are both planar. This ensures that the magnetic gap d between the iron core 300 and the second yoke arm 230 is equal everywhere along the first direction in the electromagnetic components of the relay. This reduces voltage deviation or voltage dispersion caused by magnetic gap error or magnetic gap dispersion, improving the consistency of the relay's electrical parameters and product quality.

[0067] Reference Figure 1 and Figure 2 As shown, in one or more embodiments, two second yoke arms 230 are provided, and the two second yoke arms 230 are distributed opposite each other on the yoke body 210 along a third direction. The cross-sectional shape of the second yoke arms 230 along the first plane is rectangular. The iron core 300 is located at the center of the distribution interval of the two second yoke arms 230 along the third direction. Furthermore, the iron core 300 and the two second yoke arms 230 are arranged parallel to each other, so that the magnetic gaps d formed by the iron core 300 and the two second yoke arms 230 are equal. Among them, the two mutually facing working surfaces for transmitting the magnetic field corresponding to the magnetic gaps d can be called magnetic pole surfaces. Since the magnetic gaps d formed between the iron core 300 and the two second yoke arms 230 are equal and symmetrically distributed, it can be determined that the magnetic reluctance between the iron core 300 and the second yoke arms 230 located on both sides of it is the same. When the coil 140 is energized, the electromagnetic attraction force generated has equal magnitude and opposite direction in the third direction. This can avoid the attraction force deviation caused by magnetic circuit asymmetry. For example, it can prevent problems such as tilting or jamming of the armature assembly located in the magnetic gap due to uneven electromagnetic attraction, thereby improving the operational stability of the relay.

[0068] Reference Figure 2 , Figure 8 and Figure 9As shown, the second positioning part 120 may further include a connecting edge 122, which connects the two positioning through slots 121 along a third direction. The connecting edge 122 is integrally formed with the second positioning part 120. The connecting edge 122 can serve as a structural reinforcement structure for the positioning through slots 121, further improving the structural rigidity of the side slot arms of the two positioning through slots 121. This prevents slight deformation of the side slot arms of the positioning through slots 121 from causing a decrease in positioning accuracy between the second yoke arm 230 and the positioning through slots 121 under long-term stress or vibration of the relay's electromagnetic components, thus exhibiting excellent anti-deformation performance. Furthermore, the connecting edge 122, as a structural component connecting the two positioning slots 121, can further improve the parallelism of the central axes of the two positioning slots 121. As a result, the extension length of the positioning slots 121 along the second direction can be reduced. In conjunction with the connecting edge 122, the central axes of each positioning slot 121 can be positioned during the production process, thereby improving the assembly accuracy between the second positioning part 120 and the second yoke arm 230.

[0069] Reference Figure 2 As shown, the second end of the spool 130 forms a positioning groove 121 distributed along the first direction and close to the side groove arm of the spool 130. That is, the second positioning part 120 and the second end of the spool 130 are shaped to fit together, forming a positioning groove 121 that provides third-direction positioning for the second yoke arm 230. This simplifies the structural complexity and material usage of the second positioning part 120. It also improves the assembly accuracy between the spool 130 and the second yoke arm 230, reducing voltage deviations caused by assembly tolerances.

[0070] In summary, this application discloses an electromagnetic component of a relay and a relay. This application embodiment may include a coil frame 100, a yoke 200, and an iron core 300. The iron core 300 is inserted into the coil frame 100 along a first direction. The coil frame 100 includes a first positioning part 110 and a second positioning part 120, which are distributed opposite to each other at both ends of the coil frame 100 along the first direction. The first positioning part 110 includes a positioning groove 111, and the first end of the yoke 200 is inserted into the positioning groove 111 to limit the yoke 200 in the first direction and also to limit the yoke 200 in the second direction. The yoke 200 inserted into the positioning groove 111 is connected to the iron core 300. The second positioning part 120 includes a positioning through groove 121, the length direction of which is parallel to the second direction. The second end of the yoke 200 is inserted into the positioning through groove 121 to limit the yoke 200 in the third direction. Thus, by engaging the yoke 200 with the positioning grooves 111 and positioning through grooves 121 at both ends of the coil frame 100, the yoke 200 is positioned in the first, second, and third directions respectively, avoiding voltage deviations caused by component tolerances and assembly variations between the yoke 200 and the coil frame 100. This improves the assembly accuracy of the yoke 200 and the coil frame 100, reduces voltage variations in the electromagnetic components, and improves the consistency of the product's electrical parameters.

[0071] Furthermore, the aforementioned structural limiting mechanism allows the coil frame and yoke to form a rigid whole, preventing the coil from shifting under electromagnetic attraction or vibration. This ensures the relative positions of the coil, core, and yoke are stable, and also stabilizes the electromagnetic attraction.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0074] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0075] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0076] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. An electromagnetic component for a relay, characterized in that, The electromagnetic assembly includes a coil frame, a yoke, and an iron core. The iron core is inserted into the coil frame along a first direction. The coil frame includes: The first positioning part and the second positioning part are distributed opposite to each other at both ends of the coil frame along the first direction; The first positioning part includes a positioning groove, and the first end of the yoke is inserted into the positioning groove so as to limit the yoke in the first direction and limit the yoke in the second direction through the positioning groove, wherein the yoke inserted into the positioning groove is connected to the iron core. The second positioning part includes a positioning through groove, the length direction of which is parallel to the second direction. The second end of the yoke is inserted into the positioning through groove to limit the yoke in a third direction through the positioning through groove. The first direction, the second direction, and the third direction are arranged perpendicularly to each other.

2. The electromagnetic component of the relay according to claim 1, characterized in that, The yoke includes a yoke body, a first yoke arm, and a second yoke arm, wherein the first yoke arm and the second yoke arm are distributed opposite to each other at both ends of the yoke body along the first direction; wherein... The first yoke arm is inserted into the positioning groove, and the first yoke arm has assembly holes distributed along the first direction, and the iron core is inserted into the assembly holes; The second yoke arm is inserted into the positioning slot and forms a limiting fit with the positioning slot.

3. The electromagnetic component of the relay according to claim 2, characterized in that, The positioning groove has four side groove walls and a bottom groove wall. The four side groove walls and the bottom groove wall surround the positioning groove to form the positioning groove. The two side groove walls of the positioning groove that are distributed opposite each other along the first direction are in sync with the shape of the first yoke arm.

4. The electromagnetic component of the relay according to claim 3, characterized in that, The coil frame also includes a bobbin, which is located between the first positioning part and the second positioning part, and is integrally formed with the first positioning part and the second positioning part; The axial direction of the spool is parallel to the first direction, and the central axis of the spool has a central mounting through hole for the iron core to pass through. The first end of the spool forms the side groove arm of the positioning groove distributed along the first direction and close to the spool.

5. The electromagnetic component of the relay according to claim 3, characterized in that, The bottom groove wall of the positioning groove, distributed along the second direction, abuts against the first yoke arm.

6. The electromagnetic component of the relay according to claim 2, characterized in that, The cross-sectional shape of the first plane formed by the positioning groove along the first direction and the third direction is a completely closed square ring. The cross-sectional area of ​​the positioning slot on the first plane gradually decreases from the direction near the yoke body to the direction near the coil frame, so as to guide the second yoke arm into the positioning slot.

7. The electromagnetic component of the relay according to claim 6, characterized in that, The second yoke arm forms a limiting fit with the two groove walls of the positioning through groove along the third direction upward; The second yoke arm and the positioning slot form a clearance fit along the first direction.

8. The electromagnetic component of the relay according to any one of claims 3-7, characterized in that, Two second yoke arms are provided, and the two second yoke arms are distributed opposite each other on the yoke body along the third direction; The iron core is located at the center of the distribution interval of the two second yoke arms along the third direction, and the iron core is arranged parallel to the two second yoke arms respectively.

9. The electromagnetic assembly of a relay according to claim 8, characterized in that, The two end faces of the iron core, distributed upward along the third direction, are respectively arranged parallel to the end faces of the second yoke arm, which are distributed upward along the third direction and close to the iron core.

10. The electromagnetic component of the relay according to claim 8, characterized in that, The second positioning part further includes a connecting edge, which connects the two positioning through slots along the third direction, and the connecting edge is integrally formed with the second positioning part.

11. The electromagnetic component of the relay according to claim 4, characterized in that, The second end of the spool forms the side groove arm of the positioning through groove, which is distributed along the first direction and close to the spool.

12. A relay characterized by comprising: The relay includes the electromagnetic components of the relay as described in any one of claims 1-11.

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