Upper armature support mounting structure of high-voltage direct-current contactor
By combining positioning holes and positioning posts with the design of elastic adjustment components, the problems of high injection molding difficulty and poor maintainability of traditional high-voltage DC contactor armature bracket structures have been solved, achieving a bracket installation structure with lower cost and higher stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-10
AI Technical Summary
The traditional high-voltage DC contactor's upper armature support structure is difficult to inject, costly, and has poor maintainability. Furthermore, the four bent legs are prone to deformation, leading to inconsistencies and tilting problems.
The system uses positioning holes and positioning posts in conjunction with elastic adjustment components. The support feet are connected to the positioning holes and positioning posts of the magnetic pole pieces, eliminating the need for riveting. The elastic adjustment components compensate for machining and assembly errors, ensuring the stability of the bracket.
It reduces the difficulty and cost of injection molding, improves the stability and maintainability of the bracket, and enhances the reliability and convenience of the equipment.
Smart Images
Figure CN223986542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high voltage DC contactor technology, specifically to an upper armature bracket mounting structure for a high voltage DC contactor. Background Technology
[0002] A high-voltage DC contactor is an electrical switching device specifically designed for high-voltage DC circuits, used for circuit control and protection. Its main function is to control high-current switching operations through electromagnetic mechanisms, thereby achieving the start-up and shutdown of electrical equipment, overload protection, and fault isolation. High-voltage DC contactors possess excellent conductivity and insulation, capable of withstanding high voltage and high current surges, and are widely used in power systems, rail transportation, electric vehicles, and renewable energy fields. In its design, high-voltage DC contactors typically have strong arc resistance to ensure effective prevention of arcing when disconnecting the circuit, thus improving equipment safety and reliability.
[0003] Traditional high-voltage DC contactors include a contact mechanism, which comprises a magnetic pole piece, an upper armature bracket, and a ceramic cover. The ceramic cover is connected to the magnetic pole piece to form a mounting cavity. The lower end of the upper armature bracket is fixed to the magnetic pole piece and located within the mounting cavity. An upper armature is mounted on the upper armature bracket. The upper armature bracket includes four bent legs, which are riveted to the magnetic pole piece. Due to the four bent legs, the upper armature bracket is more difficult to inject and more expensive. The bent legs are also prone to deformation during molding, making it impossible to ensure the consistency of the four legs. Furthermore, the structure has poor maintainability after assembly. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide an upper armature bracket mounting structure for a high-voltage DC contactor.
[0005] The technical solution adopted by this utility model is as follows: This application provides an upper armature bracket mounting structure for a high voltage DC contactor, including a magnetic pole piece, an upper armature bracket and a ceramic cover. The upper armature bracket is pressed between the magnetic pole piece and the ceramic cover, and has a plurality of support feet facing the magnetic pole piece. One of the support feet and the magnetic pole piece is provided with a positioning hole, and the other is provided with a positioning post. An elastic adjusting member is provided between the top of the upper armature bracket and the ceramic cover. The adjusting member is used to press the support feet tightly onto the magnetic pole piece.
[0006] In some embodiments, the adjusting member includes a positioning portion and a plurality of elastic support portions uniformly disposed circumferentially along the positioning portion.
[0007] In some embodiments, an upper armature is provided on the back side of the top of the upper armature bracket, an opening is provided on the top surface of the ceramic cover, the positioning part is a circular plate, and the elastic support part consists of four arc-shaped plates. The four arc-shaped plates are evenly spaced along the circumference of the circular plate, with the lower ends of the four arc-shaped plates converging towards the circular plate and the upper ends opening away from the circular plate.
[0008] In some embodiments, an upper armature is provided on the back side of the top of the upper armature bracket, an opening is provided on the top surface of the ceramic cover, and the circular plate is riveted and fixed to the upper armature through the opening.
[0009] In some embodiments, the end of the arc-shaped plate is provided with a bent portion, which abuts against the ceramic cover.
[0010] In some embodiments, the circular plate and the arc-shaped plate are integrally formed from metal materials.
[0011] In some embodiments, the bottom end face of the support foot is provided with the positioning hole, and the magnetic pole piece is provided with the positioning post.
[0012] In some embodiments, the depth of the positioning hole is greater than the length of the positioning post.
[0013] In some embodiments, the bottom surface of the support foot is configured as an arc-shaped surface, which abuts against the magnetic pole piece.
[0014] In some embodiments, the included angle between the circular plate and the arc-shaped plate is 110°-130°.
[0015] The beneficial effects of this utility model are as follows: In this utility model, the positioning hole and positioning post cooperate to prevent the upper armature bracket from shifting relative to the magnetic pole piece in the horizontal plane. The upper armature bracket can be restricted from shifting in the vertical direction simply by pressing it with the ceramic cover. Thus, there is no need to fix it by riveting, which facilitates maintenance and replacement. At the same time, the use of elastic adjustment parts can effectively compensate for gaps or tilting problems caused by processing errors and assembly errors in the upper armature bracket. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.
[0017] Figure 1 This is an exploded view of the upper armature bracket installation structure in this utility model;
[0018] Figure 2 This is a sectional view of the upper armature bracket mounting structure in this utility model;
[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0020] Figure 4 This is a schematic diagram of the adjusting component in this utility model;
[0021] Figure 5 This is a schematic diagram of the upper armature bracket in this utility model;
[0022] Figure 6 This is a cross-sectional view of the adjusting component in this utility model. Detailed Implementation
[0023] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.
[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.
[0025] Secondly, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components and should not be construed as limiting the embodiments of this application.
[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.
[0027] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.
[0029] In high-voltage DC contactors, the upper armature is fixed by an upper armature bracket, which in turn is fixed to the magnetic pole piece. However, the traditional fixing structure increases the injection molding difficulty and production cost of the upper armature bracket. Therefore, this specification provides an upper armature bracket mounting structure for high-voltage DC contactors that is more reliable, simpler, and has a lower manufacturing cost.
[0030] like Figures 1 to 6 As shown, the upper armature bracket mounting structure includes a magnetic pole piece 1, an upper armature bracket 2, and a ceramic cover 3. The upper armature bracket 2 presses against the magnetic pole piece 1 and the ceramic cover 3. It has multiple support feet 100 facing the magnetic pole piece 1. In this specification, four support feet 100 are used as an example. Each support foot 100 and the magnetic pole piece 1 has a positioning hole 4 on one side and a positioning post 5 on the other. Figure 3 As shown in this specification, the bottom end face of the support foot 100 is provided with the positioning hole 4, and the magnetic pole piece 1 is provided with the positioning post 5. Through the cooperation of the positioning hole 4 and the positioning post 5, the displacement of the upper armature bracket 2 relative to the magnetic pole piece 1 in the horizontal plane is prevented. The displacement of the upper armature bracket 2 in the vertical direction can be limited simply by pressing it with the ceramic cover 3. Thus, there is no need to fix it by riveting, which facilitates repair, maintenance and replacement.
[0031] Importantly, the four bent legs of the traditional upper armature bracket 2 have been eliminated, which reduces the difficulty and cost of injection molding and avoids the problem of the upper armature bracket 2 tilting due to uneven height caused by the deformation of the four bent legs, thereby greatly improving the stability of the armature during operation.
[0032] Since the upper armature bracket 2 may have processing and assembly errors, an elastic adjusting member 6 is provided between the top of the upper armature bracket 2 and the ceramic cover 3. The adjusting member 6 is used to press the support foot 100 against the magnetic pole piece 1, which can effectively compensate for the gap or tilting problems caused by the processing and assembly errors of the upper armature bracket 2.
[0033] It should be understood that the elasticity of the adjusting element 6 can be made of elastic material itself or can be generated by structural deformation. Therefore, it can automatically adapt to uneven surfaces to a certain extent, ensuring that the support foot 100 can always be pressed tightly on the magnetic pole piece 1, thereby improving the reliability of the contact.
[0034] In some embodiments, the adjusting member 6 includes a positioning part 60 and a plurality of elastic support parts 61 uniformly arranged circumferentially along the positioning part 60. The circumferentially uniformly arranged elastic support parts 61 form a stable support surface, enhancing the stability of the overall structure.
[0035] For example, such as Figure 4 As shown, the positioning part 60 is a circular plate, and the elastic support part 61 consists of four arc-shaped plates. The four arc-shaped plates are evenly spaced along the circumference of the circular plate. The lower ends of the four arc-shaped plates converge toward the circular plate and the upper ends open away from the circular plate, which is similar to a frustum. Preferably, the circular plate and the arc-shaped plates are integrally formed of metal material, because metal material has good stability and safety under high pressure conditions.
[0036] This design not only improves the stability of the upper armature bracket 2 but also facilitates production. It is understood that the shape of the positioning part 60 can also be a polygon or other shapes, and the number and shape of the elastic support parts 61 can also be adjusted.
[0037] Secondly, such as Figure 5 As shown, an upper armature is provided on the back of the top of the upper armature bracket 2, and an opening 30 is provided on the top surface of the ceramic cover 3. The circular plate passes through the opening 30 and is riveted to the upper armature.
[0038] Furthermore, the end of the arc-shaped plate is provided with a bending portion 62, which abuts against the ceramic cover 3. The bending portion 62 provides an arc-shaped contact surface, which can prevent damage to the ceramic cover 3 when the adjusting member 6 is formed, and at the same time facilitate the deformation of the adjusting member 6.
[0039] Furthermore, such as Figure 6 As shown, the included angle C between the circular plate and the arc plate is 110°-130°, preferably 120°.
[0040] After testing, adjustment component 6 of this structure was found to be the better choice.
[0041] Of course, in some embodiments, the adjusting member 6 can be a compression spring, a conical spring, or the like; similarly, it can also be a deformable structure such as a U-shape, a wave shape, a circular ring, or an elliptical ring.
[0042] In some embodiments, the depth of the positioning hole 4 is greater than the length of the positioning post 5. In actual manufacturing and assembly, some machining errors are inevitable. The deep hole design can accommodate a certain amount of error, avoiding poor fit caused by errors, thereby improving the success rate of assembly and overall reliability.
[0043] Preferably, the bottom surface of the support foot 100 is set as an arc-shaped surface 101, which abuts against the magnetic pole piece 1, thus avoiding damage to the magnetic pole piece 1.
[0044] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.
[0045] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.
[0046] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.
Claims
1. An upper armature bracket mounting structure of a high voltage DC contactor, characterized by, The magnet pole piece, the upper armature support and the ceramic cover are included, the upper armature support is pressed between the magnet pole piece and the ceramic cover, a plurality of supporting legs are arranged on the upper armature support towards the magnet pole piece, one of the supporting legs and the magnet pole piece is provided with a positioning hole, and the other is provided with a positioning column, an elastic adjusting piece is arranged between the top of the upper armature support and the ceramic cover, and the adjusting piece is used for pressing the supporting leg on the magnet pole piece.
2. The upper armature support mounting structure of a high voltage DC contactor according to claim 1, wherein The adjusting piece includes a positioning part and a plurality of elastic supporting parts which are uniformly arranged along the circumference of the positioning part.
3. The upper armature support mounting structure of a high voltage DC contactor according to claim 2, wherein The back of the top of the upper armature support is provided with an upper armature, the top end surface of the ceramic cover is provided with an opening part, the positioning part is a circular plate, the elastic supporting part is four and is an arc-shaped plate, four arc-shaped plates are uniformly arranged along the circumference of the circular plate, the lower end of the four arc-shaped plates is gathered towards the circular plate, and the upper end is opened away from the circular plate.
4. The upper armature support mounting structure of a high-voltage DC contactor according to claim 3, characterized by The back of the top of the upper armature support is provided with an upper armature, the top end surface of the ceramic cover is provided with an opening part, the circular plate is riveted and fixed to the upper armature through the opening part.
5. The upper armature support mounting structure of a high voltage DC contactor according to claim 3, wherein The end of the arc-shaped plate is provided with a bending part, and the bending part abuts against the ceramic cover.
6. The upper armature support mounting structure of a high voltage DC contactor according to claim 3, wherein The circular plate and the arc-shaped plate are integrally formed by using a metal material.
7. The upper armature support mounting structure of a high voltage DC contactor according to claim 1, wherein The bottom end surface of the supporting leg is provided with the positioning hole, and the magnet pole piece is provided with the positioning column.
8. The upper armature support mounting structure of a high-voltage DC contactor according to claim 7, characterized by The depth of the positioning hole is greater than the length of the positioning column.
9. The upper armature support mounting structure of a high voltage DC contactor according to claim 7, wherein The bottom end surface of the supporting leg is provided with an arc-shaped surface, and the arc-shaped surface abuts against the magnet pole piece.
10. The upper armature support mounting structure of a high voltage DC contactor according to claim 6, wherein The included angle between the circular plate and the arc-shaped plate is 110°-130°.