A high-voltage DC relay
By creating a bent edge and positioning bracket on the injection molded part, the problems of solder contamination and mutual interference of conductive sheets in high-voltage relays are solved, achieving the independence and stability of the conductive sheets and improving product performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG DONGYA ELECTRONIC CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-31
AI Technical Summary
Existing high-voltage relays have solder contamination issues on the conductive plates of the auxiliary lead-out plates, and the conductive plates interfere with each other under high-voltage conditions, leading to performance degradation.
A high-voltage DC relay is designed by integrally molding a bent edge and a second section of a conductive sheet on an injection molded part, with the exposed part of the conductive sheet located under the bent edge. A positioning frame is used to provide deformation space, so that the two conductive sheets are fixed independently and avoid mutual interference.
It effectively avoids contamination problems during soldering, while ensuring the independence and stability of the conductive sheets under high voltage, preventing mutual interference between conductive sheets, and improving product performance.
Smart Images
Figure CN224582205U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of relay technology, and in particular to a high-voltage DC relay. Background Technology
[0002] As market demand continues to rise, contactor products are constantly being innovated and upgraded. However, existing high-voltage relay products on the market still have many shortcomings that need to be developed and improved. For example, in the design of the auxiliary lead plate and the injection molded part as an integrated unit, the auxiliary lead plate needs to be bent at the downward extension position on the upper side of the ceramic cover. The bent part is generally an exposed metal part, and the exposed part is close to the insertion end of the auxiliary stationary contact and the injection molded part. When the auxiliary stationary contact is soldered, there is a possibility of contamination of the auxiliary lead plate.
[0003] To overcome the above problems, existing technologies typically add injection-molded parts to the bent metal parts. On the one hand, the injection-molded parts can improve the relative stability of the two conductive pieces in the auxiliary lead-out piece, and on the other hand, they can prevent the auxiliary stationary contact from contaminating the auxiliary lead-out piece during soldering. However, this injection-molded part jointly defines the two conductive pieces of the auxiliary lead-out piece. Under high-voltage conditions, if one of the conductive pieces deforms, it will have a ripple effect, causing the entire auxiliary lead-out piece to deform and affecting product performance.
[0004] Therefore, in view of the above-mentioned defects, how to prevent the two conductive sheets of the auxiliary lead sheet from interfering with each other while avoiding contamination of the auxiliary lead sheet is a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this application is to provide a high-voltage DC relay that can avoid contamination of the auxiliary lead sheet during soldering, while also ensuring that the two conductive pieces of the auxiliary lead sheet have a certain degree of independence and avoid mutual interference.
[0006] To achieve the above objectives, this application provides a high-voltage DC relay, comprising:
[0007] Injection molded part, wherein an auxiliary stationary contact is inserted into the injection molded part;
[0008] An auxiliary lead-out piece includes two conductive pieces, each of which has a first segment integrally injection molded with the injection molded part and a second segment formed by bending the first segment, one end of the first segment being electrically connected to the auxiliary stationary contact, and the injection molded part having a bent edge extending along the second segment and integrally injection molded with a portion of the second segment;
[0009] The positioning frame is used to fix the second segments of the two conductive sheets without the bent edges to the positioning frame, which has an expansion space for the deformation of the second segments.
[0010] Optionally, the auxiliary stationary contact is inserted into the middle of the injection molded part, and the bent edge is located at the end of the injection molded part and bends and extends downward toward the injection molded part.
[0011] Optionally, the positioning frame extends in the same direction as the second segment, and one side of the positioning frame has a support surface that contacts the two second segments. The support surface is provided with a positioning structure that cooperates with the second segment to position the second segment on the positioning frame.
[0012] Optionally, an insulating partition is provided on the support surface. The insulating partition is located between the two second segments and extends in a direction away from the support surface, and the extended end of the insulating partition extends beyond the side wall of the second segment away from the support surface.
[0013] Optionally, the positioning structure includes a first positioning post disposed on the positioning frame, and the second section is provided with a first positioning hole that cooperates with the first positioning post.
[0014] Optionally, the second segment is spaced apart from the insulating partition, the side of the second segment facing away from the insulating partition is not in contact with the positioning frame, and the side of the second segment facing away from the support surface is not in contact with the positioning frame.
[0015] Optionally, it also includes an insulating cover and a magnetic circuit mechanism, the insulating cover being located above the magnetic circuit mechanism, the injection molded part covering the upper surface of the insulating cover, the first segment being parallel to the upper surface of the insulating cover, the second segment extending along a side surface parallel to the insulating cover, and the first segment being perpendicular to the second segment.
[0016] Optionally, the magnetic circuit mechanism includes a U-shaped yoke, the U-shaped yoke having side plates forming two U-shaped walls, the outer side of the side plates being provided with a second positioning hole, and the positioning frame being provided with a second positioning post that cooperates with the second positioning hole.
[0017] Optionally, it also includes a housing that covers the periphery of the insulating cover and the magnetic circuit mechanism, the housing having sidewalls that limit the second segment to the positioning frame and limit the positioning frame to the side plate.
[0018] Optionally, any of the conductive sheets further has a third segment formed by bending the second segment and a fourth segment formed by bending the third segment, the third segment being parallel to the first segment and the fourth segment being parallel to the second segment, the third segment extending through the housing and the fourth segment being connectable to an external circuit.
[0019] The beneficial effects of this application are as follows: By forming a bent edge on the injection molded part, the bent edge can be integrally injection molded with a portion of the second section of the conductive sheet, and the bent edge is a section extending downward from the injection molded part. Therefore, the exposed portion of the conductive sheet is located on the underside of the bent edge, effectively preventing the stationary contact from contaminating the conductive sheet during soldering. Simultaneously, the exposed portions of the second sections of the two conductive sheets are respectively fixed on positioning frames, which have expansion space for deformation of these second sections. Compared to integrally injection molding the second sections of the two conductive sheets, this application makes the second sections of the two conductive sheets more independent through the fixing method of the positioning frames. Under high voltage conditions, if the second section of one conductive sheet deforms, it will not affect the working performance of the second section of the other conductive sheet, thus avoiding mutual interference. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the exploded structure of a high-voltage DC relay provided in an embodiment of this application;
[0022] Figure 2 This is a schematic diagram of the assembly structure of the injection molded part and the auxiliary lead-out piece provided in the embodiments of this application;
[0023] Figure 3 This is a schematic diagram of the auxiliary lead-out sheet structure provided in the embodiments of this application;
[0024] Figure 4 This is a schematic diagram of the front structure of the high-voltage DC relay provided in the embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the shell structure provided in an embodiment of this application.
[0026] In the diagram: 1-Injection molded part; 2-Conductive sheet; 3-Positioning frame; 4-Insulating cover; 5-Auxiliary stationary contact; 6-Magnetic circuit mechanism; 7-Housing;
[0027] 11-Bent edge;
[0028] 21 - First segment; 22 - Second segment; 23 - Third segment; 24 - Fourth segment; 221 - First positioning hole;
[0029] 31-Supporting surface; 32-First positioning post; 33-Insulating partition; 34-Second positioning post;
[0030] 61-U-shaped yoke; 62-Second positioning hole. Detailed Implementation
[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0032] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does 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, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0034] Please refer to Figure 1 This embodiment provides a high-voltage DC relay, including an insulating cover 4, a magnetic circuit mechanism 6, an injection molded part 1, an auxiliary lead-out piece, and a positioning frame 3. The working space of the contacts is formed inside the insulating cover 4. The magnetic circuit mechanism 6 can drive the moving contact inside the insulating cover 4 to achieve electrical conduction of the stationary contact.
[0035] The injection molded part 1 covers the upper surface of the insulating cover 4. The injection molded part 1 has insertion holes, through which the auxiliary stationary contact 5 is inserted into the injection molded part 1. The auxiliary lead-out piece includes two conductive pieces 2. Please refer to [reference needed]. Figures 1 to 3 One end of each of the two conductive pieces 2 is located at the insertion hole of the injection molded part 1, so as to achieve electrical conduction with the auxiliary stationary contact 5.
[0036] In this design, any conductive sheet 2 has a first segment 21 integrally injection molded with the injection molded part 1 and a second segment 22 formed by bending the first segment 21. One end of the first segment 21 is electrically connected to the auxiliary stationary contact 5, and the injection molded part 1 has a bent edge 11 extending along the second segment 22 and integrally injection molded with a portion of the second segment 22. In other words, the integral uninterrupted injection molding of the injection molded part 1 and the conductive sheet 2 includes the first segment 21 and at least a portion of the second segment 22.
[0037] It is foreseeable that, based on the integral molding of the bent edge 11 and part of the second segment 22, the exposed part of the second segment 22 can be located entirely below the bent edge 11, so that the exposed part of the second segment 22 is not at the same height as the socket, which can effectively prevent the auxiliary conductive sheet 2 from being contaminated when the socket is soldered.
[0038] Furthermore, the setting of the bent edge 11 can also ensure that the second segment 22 of the two conductive sheets 2 has a certain constraint effect at the top, thereby improving the relative stability of the two conductive sheets 2.
[0039] In this design, the second segments 22 of the two conductive sheets 2 without the bent edges 11 are respectively fixed to the positioning frame 3. That is, the second segments 22 located below the bent edges 11 are fixed to the positioning frame 3, and the positioning frame 3 has an expansion space for the deformation of the second segments 22. Compared with the technical solution of simultaneous injection molding of the second segments 22, in this application, only the first segment 21 and part of the second segment 22 of the conductive sheet 2 are integrally injection molded with the injection molded part 1, and the rest are in an independent state. Therefore, if one conductive sheet 2 deforms, it will not affect the working performance of the other conductive sheet 2, thereby avoiding mutual interference.
[0040] In summary, by forming a bent edge 11 on the injection molded part 1, the bent edge 11 can be integrally injection molded with a portion of the second segment 22 of the conductive sheet 2. Since the bent edge 11 extends downwards from the injection molded part 1, the exposed portion of the conductive sheet 2 is located below the bent edge 11, effectively preventing contamination of the conductive sheet 2 by the stationary contact during soldering. Furthermore, the second segments 22 of the two conductive sheets 2 are independently mounted on the positioning frame 3, and the positioning frame 3 has space for the deformation of the conductive sheets 2. Therefore, under high voltage, even if one conductive sheet 2 deforms, it will not affect the working performance of the other conductive sheet 2.
[0041] Furthermore, the insertion position of the auxiliary stationary contact 5 into the injection molded part 1 is located in the middle of the injection molded part 1, or on the side of the injection molded part 1 away from the second segment 22, so that the insertion hole on the injection molded part 1 is far from the exposed area of the second segment 22, which can also avoid contamination of the conductive sheet 2 during soldering to a certain extent. The bent edge 11 is located at the end of the injection molded part 1 and bends and extends downwards towards the injection molded part 1, so that the exposed area of the second segment 22 is all located on the lower side of the injection molded part 1.
[0042] In some embodiments, the positioning frame 3 extends in the same direction as the second segment 22, and one side of the positioning frame 3 has a support surface 31 that contacts the second segment 22 of the two conductive sheets 2. When the second segment 22 of the conductive sheet 2 is positioned on the positioning frame 3, the second segment 22 of the conductive sheet 2 can fit with the support surface 31 of the positioning frame 3, thereby providing a stable support effect for the conductive sheet 2.
[0043] A positioning structure is provided on the support surface 31. The positioning structure can cooperate with the second section 22 of the conductive sheet 2 to constrain the second section 22 on the support surface 31 and prevent loosening or shaking.
[0044] An insulating partition 33 is also provided on the support surface 31. Please refer to [reference needed]. Figure 1 and Figure 4 The insulating partition 33 is located between the second section 22 of the two conductive sheets 2, and the insulating partition 33 extends away from the support surface 31, so that the extended end extends beyond the side wall of the second section 22 away from the support surface 31, thereby improving the insulation effect of the two conductive sheets 2 and preventing arc discharge and short circuit accidents under high voltage environment.
[0045] It should be noted that the insulating partition 33 can extend along the direction of the second segment 22 on the support surface 31 to ensure that there is a sufficiently long insulation length between the second segments 22 of the two conductive sheets 2; on the other hand, it can extend away from the support surface 31 or perpendicular to the support surface 31 to ensure that the second segments 22 of the two conductive sheets 2 have a sufficiently long insulation height, thereby ensuring the insulation effect of the two second segments 22.
[0046] The above-mentioned positioning structure includes a first positioning post 32 disposed on the positioning frame 3, and a first positioning hole 221 that cooperates with the first positioning post 32 is provided on the second section 22 of the conductive sheet 2. When the second section 22 of the conductive sheet 2 is assembled onto the positioning frame 3, the first positioning post 32 can be inserted into the first positioning hole 221, thereby realizing the positioning function of the conductive sheet 2.
[0047] In some embodiments, one side of the second segment 22 can contact the insulating partition 33, so that the insulating partition 33 can also play a certain positioning role for the conductive sheet 2, ensuring the stability of the conductive sheet 2; the second segment 22 can also be spaced apart from the insulating partition 33, so that there is a certain extended space between the second segment 22 and the insulating partition 33. Even if the second segment 22 deforms, the deformation will not directly affect the positioning frame 3 under the action of the extended space, so there is no problem of affecting the working performance of the other conductive sheet 2.
[0048] Furthermore, since the first positioning post 32 and the first positioning hole 221 have already positioned the second segment 22 of the conductive sheet 2 on the positioning frame 3, and with the positioning effect of the injection molded part 1 on the conductive sheet 2, even if the other side walls of the outer periphery of the second segment 22 (except for the side walls that contact the support surface 31) do not contact the positioning frame 3, it still has good stability. Therefore, this application can set the side wall of the second segment 22 away from the insulating partition 33 to be non-contact with the positioning frame 3, and the side wall of the second segment 22 away from the support surface 31 to be non-contact with the positioning frame 3, so that the positioning frame 3 provides sufficient expansion space for the outer periphery of the second segment 22, so as to avoid interference with the positioning frame 3 when the conductive sheet 2 is deformed, which would affect the positioning effect of the positioning frame 3 and the working performance of the other conductive sheet 2.
[0049] Please refer to Figure 1 and Figure 4 The insulating cover 4 is located on the upper side of the magnetic circuit mechanism 6. The injection molded part 1 covers the upper surface of the insulating cover 4. The first segment 21 of the conductive sheet 2 is parallel to the upper surface of the insulating cover 4. The second segment 22 of the conductive sheet 2 extends along the side surface of the insulating cover 4 and extends to the bottom position. The first segment 21 of the conductive sheet 2 is perpendicular to the second segment 22. That is, based on the first segment 21 being set horizontally, the second segment 22 can extend vertically to the bottom of the relay.
[0050] The magnetic circuit mechanism 6 includes a U-shaped yoke 61 (refer to 1). The U-shaped yoke 61 has side plates forming two U-shaped walls. The outer side of the side plates is provided with a second positioning hole 62. The positioning frame 3 is provided with a second positioning post 34 that cooperates with the second positioning hole 62. The positioning frame 3 can achieve a fixed connection with the U-shaped yoke 61 through the cooperation of the second positioning post 34 and the second positioning hole 62, thereby ensuring the positioning effect of the positioning frame 3.
[0051] Please refer to Figure 5 The relay also includes a housing 7, which covers the insulating cover 4 and the magnetic circuit mechanism 6. The housing 7, through the action of its side walls, limits the second segment 22 of the conductive sheet 2 to the positioning frame 3, and limits the positioning frame 3 to the side plate, thereby ensuring the stability of the conductive sheet 2 and the positioning frame 3. Simultaneously, the housing 7, in cooperation with its top wall and base, vertically limits the insulating cover 4 and the magnetic circuit mechanism 6, while the side walls horizontally limit their movement, thus ensuring the stability of the insulating cover 4, the magnetic circuit mechanism 6, and other components located within the housing 7.
[0052] Each conductive sheet 2 also has a third section 23 formed by bending the second section 22 and a fourth section 24 formed by bending the third section 23. The third section 23 is parallel to the first section 21, and the fourth section 24 is parallel to the second section 22. The third section 23 extends out of the housing 7, and the fourth section 24 can be connected to an external circuit.
[0053] Of course, the relay also includes necessary components such as moving contact, stationary contact, and coil. No further restrictions are imposed here, as long as the basic function of the relay can be achieved, all of which fall within the protection scope of this application.
[0054] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0055] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A high-voltage DC relay, characterized in that, include: Injection molded part (1), on which an auxiliary stationary contact (5) is inserted; An auxiliary lead-out piece includes two conductive pieces (2), each of the conductive pieces (2) having a first segment (21) integrally injection molded with the injection molded part (1) and a second segment (22) formed by bending the first segment (21), one end of the first segment (21) being electrically connected to the auxiliary stationary contact (5), and the injection molded part (1) having a bent edge (11) extending along the second segment (22) and integrally injection molded with a portion of the second segment (22); The positioning frame (3) is fixed to the second section (22) of the two conductive sheets (2) without the bent edge (11), and the positioning frame (3) has an expansion space for the deformation of the second section (22).
2. The high-voltage DC relay according to claim 1, characterized in that, The auxiliary stationary contact (5) is inserted into the middle of the injection molded part (1), and the bent edge (11) is located at the end of the injection molded part (1) and bends and extends towards the lower side of the injection molded part (1).
3. The high-voltage DC relay according to claim 1, characterized in that, The positioning frame (3) extends in the same direction as the second segment (22). The positioning frame (3) has a support surface (31) on one side that contacts the two second segments (22). The support surface (31) is provided with a positioning structure that cooperates with the second segment (22) to position the second segment (22) on the positioning frame (3).
4. The high-voltage DC relay according to claim 3, characterized in that, An insulating partition (33) is provided on the support surface (31). The insulating partition (33) is located between the two second segments (22) and extends away from the support surface (31). The extended end of the insulating partition (33) extends beyond the second segment (22) and is away from the side wall of the support surface (31).
5. The high-voltage DC relay according to claim 3, characterized in that, The positioning structure includes a first positioning post (32) disposed on the positioning frame (3), and a first positioning hole (221) that cooperates with the first positioning post (32) is provided on the second section (22).
6. The high-voltage DC relay according to claim 4, characterized in that, The second segment (22) is spaced apart from the insulating partition (33). The side of the second segment (22) away from the insulating partition (33) is not in contact with the positioning frame (3). The side of the second segment (22) away from the support surface (31) is not in contact with the positioning frame (3).
7. The high-voltage DC relay according to claim 1, characterized in that, It also includes an insulating cover (4) and a magnetic circuit mechanism (6), the insulating cover (4) being located on the upper side of the magnetic circuit mechanism (6), the injection molded part (1) covering the upper surface of the insulating cover (4), the first segment (21) being parallel to the upper surface of the insulating cover (4), the second segment (22) extending along the side surface parallel to the insulating cover (4), and the first segment (21) being perpendicular to the second segment (22).
8. The high-voltage DC relay according to claim 7, characterized in that, The magnetic circuit mechanism (6) includes a U-shaped yoke (61), which has a side plate forming two U-shaped walls. The outer side of the side plate is provided with a second positioning hole (62), and the positioning frame (3) is provided with a second positioning post (34) that cooperates with the second positioning hole (62).
9. The high-voltage DC relay according to claim 8, characterized in that, It also includes a housing (7) which covers the periphery of the insulating cover (4) and the magnetic circuit mechanism (6), the cover having a sidewall that limits the second segment (22) to the positioning frame (3) and the positioning frame (3) to the side plate.
10. The high-voltage DC relay according to claim 9, characterized in that, Each of the conductive sheets (2) further has a third segment (23) formed by bending the second segment (22) and a fourth segment (24) formed by bending the third segment (23), the third segment (23) being parallel to the first segment (21), the fourth segment (24) being parallel to the second segment (22), the third segment (23) extending through the housing (7), and the fourth segment (24) being connectable to an external circuit.