A compact high-voltage relay

Abstract

The application discloses a compact high-voltage relay and relates to the technical field of relays, which comprises a magnetic circuit mechanism, a coil support located in a U-shaped yoke, a circuit board arranged between the U-shaped yoke and the coil support, a first plug-in interface on the circuit board and plugged with a first plug-in terminal of the coil support, a second plug-in interface on the circuit board and electrically connected with the first plug-in interface, a relief opening in the side plate corresponding to the second plug-in interface, a second injection molding part integrally injection molded with a second plug-in terminal plugged with the second plug-in interface and electrically connected with the second plug-in interface, and an overlapping part of the second injection molding part and the side plate at the relief opening.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, in particular to a compact high-voltage relay. BACKGROUND

[0002] With the continuous improvement of market demand, the products in the contactor industry are also constantly innovating and upgrading, and the requirements for relays are also getting higher and higher, especially in some specific fields, not only the voltage requirement of the relay is high, but also the volume requirement is small.

[0003] The existing high-voltage relay usually sets the circuit board on the side of the magnetic circuit mechanism, which causes the circuit board to occupy the space outside the magnetic circuit mechanism, and additional components such as limit blocks and bolts are needed to fix the circuit board, which also causes the peripheral space of the magnetic circuit mechanism to be occupied, obviously increasing the volume of the relay.

[0004] Therefore, in view of the above defects, how to reduce the volume of the relay and make the relay structure more compact is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide a compact high-voltage relay which can make full use of the internal space of the magnetic circuit mechanism, effectively reduce the volume of the relay, and ensure the compactness of the structure.

[0006] To achieve the above purpose, the present application provides a compact high-voltage relay, comprising:

[0007] A magnetic circuit mechanism comprising a U-shaped yoke and a coil support inside the U-shaped yoke, the U-shaped yoke having side plates forming two U-shaped walls and a bottom plate forming a U-shaped bottom, a circuit board being provided between the side plates and the coil support, the circuit board being provided with a first plug-in interface into which a first plug-in terminal of the coil support is plugged, the first plug-in terminal being used for electrically connecting the coil and the first plug-in interface; the circuit board is provided with a second plug-in interface electrically connected to the first plug-in interface, and the side plate is provided with an avoiding opening corresponding to the second plug-in interface;

[0008] A second injection molding part integrally injection molded with a second plug-in terminal which is plugged into and electrically connected to the second plug-in interface, the second injection molding part having an overlapping part with the side plate at the avoiding opening;

[0009] Wherein, the lower side of the circuit board has a bearing surface in contact with the bottom bearing surface of the coil support, the bearing surface is provided with a clearance opening, and the bearing surface is provided with a limiting protrusion matched with the clearance opening to realize positioning and supporting.

[0010] Optionally, it further comprises an insulating cover on the upper side of the magnetic circuit mechanism, and the insulating cover has a cavity for the operation of the contact.

[0011] The upper surface of the insulating cover is provided with a first injection molding part, an auxiliary static contact is inserted into the first injection molding part, and an auxiliary lead-out sheet electrically connected to the auxiliary static contact is integrally injection molded on the first injection molding part;

[0012] The auxiliary lead-out sheet includes two conductive sheets, each of which has a first section integrally injection molded with the first injection molding part and a second section formed by bending the first section downward, and the second section extends downward along the side wall of the insulating cover and the side plate.

[0013] Optionally, the second section is located on the same side as the second injection molding part, and the side plate having the avoiding opening is provided with a positioning rack extending downward along the direction parallel to the side plate, and the second sections of the two conductive sheets are fixed on the positioning rack.

[0014] Optionally, the outer side of the side plate is provided with a second positioning hole, and the positioning rack is provided with a second positioning column matched with the second positioning hole;

[0015] The positioning rack is separately provided from the second injection molding part, or the second injection molding part is integrally formed with the positioning rack or the second positioning column.

[0016] Optionally, it further includes a shell and a base located at the bottom of the shell, and the shell and the base are fixedly connected to form a cavity structure for accommodating the insulating cover and the magnetic circuit mechanism;

[0017] The U-shaped yoke is placed on the base, one side wall of the shell abuts against the side plate, and the other side wall of the shell abuts against the positioning rack to limit the horizontal displacement of the U-shaped yoke and the positioning rack;

[0018] The two side plates are clamped with a base plate at the upper end, the insulating cover is arranged on the base plate, the coil support is located in the cavity formed by the U-shaped yoke and the base plate, and the top wall of the shell abuts against the first injection molding part to limit the vertical displacement of the magnetic circuit mechanism and the insulating cover.

[0019] Optionally, the side wall of the shell is provided with a through hole for the second injection molding part to pass through, and one end of the second plug-in terminal away from the second plug-in port is led out to the outside of the second injection molding part and located outside the shell for external connection of a control circuit;

[0020] The conductive sheet further has a third section formed by bending the second section and a fourth section formed by bending the third section, the third section is located on the upper surface of the second injection molding part and led out to the outside of the shell through the through hole, and the fourth section is used for connecting an external working circuit.

[0021] Optionally, a magnetic steel support is arranged between the outer wall of the insulating cover and the side wall of the shell, and the magnetic steel support and the side wall of the insulating cover clasp a magnetic steel therebetween.

[0022] The bottom of the magnetic steel support is provided with a support leg abutting against the base plate, and the top of the magnetic steel support abuts against the first injection molding part to limit the vertical displacement of the magnetic steel support.

[0023] The magnetic steel supports are arranged on both sides of the insulating cover, the outer wall of one of the magnetic steel supports abuts against the side wall of the shell, and the outer wall of the other magnetic steel support abuts against the positioning frame to limit the horizontal displacement of the magnetic steel support.

[0024] Optionally, a main static contact is further included, which penetrates the top wall of the shell, the first injection molding part and the insulating cover in sequence, and the main static contact and the auxiliary static contact both extend into the working cavity of the insulating cover.

[0025] The working cavity of the insulating cover is provided with a main active contact and an auxiliary active contact in transmission connection with the magnetic circuit mechanism, so as to realize the electrical conduction of the main static contact and the electrical conduction of the auxiliary static contact.

[0026] Optionally, in the front-rear direction, the side walls on the front and rear sides of the second injection molding part do not exceed the side plate or the circuit board.

[0027] Optionally, the limiting protrusion abuts against the coil support of the outer circle of the allowance opening in the horizontal direction, and the bearing surface is provided with a groove for providing a space for the second plug-in port and the second plug-in terminal to accommodate the welding points.

[0028] The application has the beneficial effects that the circuit board is integrated in the narrow space between the side plate of the U-shaped yoke and the coil support, the nested layout of the magnetic circuit mechanism and the circuit board is realized, and the internal space of the U-shaped yoke is fully utilized; and the upper and lower layer electrical connection design of the first plug-in port and the second plug-in port on the circuit board replaces the transmission lateral wiring mode, and the horizontal space is saved.

[0029] In addition, by setting the avoiding opening, on one hand, the second injection part can reach the circuit board, so that the second plug-in terminal is stably electrically connected with the second plug-in port; on the other hand, the second injection part can be arranged close to the inside of the U-shaped yoke by the avoiding opening, so that the influence on the horizontal space is reduced. The cooperation between the limiting protrusion and the avoiding opening can position the circuit board, and the cooperation between the limiting protrusion and the avoiding opening does not increase the occupied space, compared with the traditional screw fixing mode, and can save a certain installation space. Through the above effects, it can be seen that the application effectively reduces the space occupied by the relay in the horizontal and vertical directions, and can effectively save the installation space inside the relay, so as to ensure the compactness of the overall structure of the relay. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0031] Figure 1 The compact high-voltage relay explosion structure schematic diagram provided by the embodiments of the present application;

[0032] Figure 2 The magnetic circuit mechanism explosion structure schematic diagram provided by the embodiments of the present application;

[0033] Figure 3 The magnetic circuit mechanism and the insulating cover assembly structure schematic diagram provided by the embodiments of the present application;

[0034] Figure 4 The magnetic circuit mechanism and the insulating cover front structure schematic diagram provided by the embodiments of the present application;

[0035] Figure 5 The compact high-voltage relay sectional view provided by the embodiments of the present application;

[0036] Figure 6 The compact high-voltage relay sectional view provided by the embodiments of the present application; Figure 5 The enlarged structure schematic diagram of A in the middle;

[0037] Figure 7 The compact high-voltage relay three-dimensional structure schematic diagram provided by the embodiments of the present application;

[0038] Figure 8 The shell structure schematic diagram provided by the embodiments of the present application;

[0039] Figure 9The compact high-voltage relay first injection molding part and the conductive sheet cooperation structure schematic view provided by the embodiment of the application;

[0040] Figure 10 The conductive sheet structure schematic view provided by the embodiment of the application.

[0041] In the figure: 1-U-shaped yoke; 2-coil support; 3-circuit board; 4-second injection molding part; 5-base plate; 6-positioning frame; 7-magnetic steel support; 8-main static contact; 9-assistant static contact; 10-insulating cover; 11-first injection molding part; 12-conductive sheet; 13-base; 14-coil; 15-magnetic steel; 16-housing; 17-annular groove; 18-driving rod; 19-main dynamic contact; 20-assistant dynamic contact;

[0042] 101-second positioning hole; 102-avoidance opening;

[0043] 201-first plug-in terminal; 202-bearing surface; 203-clearance; 204-groove;

[0044] 301-first plug-in interface; 302-second plug-in interface; 303-limiting protrusion; 304-bearing surface;

[0045] 401-second plug-in terminal;

[0046] 601-supporting surface; 602-first positioning column; 603-insulating partition plate; 604-second positioning column;

[0047] 701-leg;

[0048] 1101-bent edge; 1102-first mounting hole; 1103-column foot;

[0049] 1201-first section; 1202-second section; 1203-third section; 1204-fourth section; 1205-first positioning hole;

[0050] 1601-annular stop edge; 1602-second mounting hole. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0052] It should be noted that in the present embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "rear" and the like are based on the directions or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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. In addition, "first", "second", "third", "fourth" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0053] In order for 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 drawings and specific embodiments.

[0054] Please refer to Figures 1 to 10 In the present embodiment, a compact high-voltage relay is provided, which comprises a magnetic circuit mechanism, the magnetic circuit mechanism comprising a U-shaped yoke 1 and a coil support 2 inside the U-shaped yoke 1, the U-shaped yoke 1 having side plates forming two U-shaped walls and a bottom plate forming a U-shaped bottom, a circuit board 3 being provided between one of the side plates and the coil support 2, the upper end of the circuit board 3 not exceeding the height of the side plate, and the circuit board 3 being arranged parallel to the side plate.

[0055] A first plug-in port 301 is provided on the circuit board 3 and is plugged with a first plug-in terminal 201 of the coil support 2, one end of the first plug-in terminal 201 being electrically connected to a coil 14 on the coil support 2, and the other end being electrically connected to the first plug-in port 301, thereby realizing electrical conduction between the coil 14 and the first plug-in port 301. A second plug-in port 302 is also provided on the circuit board 3 and is in electrical conduction with the first plug-in port 301, the second plug-in port 302 being located on the lower side of the first plug-in port 301.

[0056] In order to avoid the influence of the side plate on the normal plugging of the second plug-in port 302, a clearance 102 corresponding to the second plug-in port 302 can be formed in the side plate, and a second plug-in terminal 401 integrally injection molded with the second injection molded part 4 can be inserted into the second plug-in port 302 through the clearance 102, thereby realizing electrical conduction between the second plug-in terminal 401 and the coil 14.

[0057] It should be noted that when the second plug-in terminal 401 is inserted into the second plug-in port 302, the second injection molded part 4 should be located at the position of the clearance 102, so that the second injection molded part 4 and the side plate have an overlapping portion at the clearance 102, so that the second injection molded part 4 can make full use of the thickness of the side plate itself and the internal space of the U-shaped yoke 1, reduce the space occupied by the second injection molded part 4 in the horizontal direction, and save horizontal space.

[0058] And by integrating the circuit board 3 inside the U-shaped yoke 1, the space occupied by the circuit board 3 around the U-shaped yoke 1 is avoided, thereby making the structure of the relay more compact.

[0059] The circuit board 3 also has an overlapping part with the coil support 2 in the vertical direction, that is, the lower side of the circuit board 3 has a bearing surface 304 in contact with the bearing surface 202 of the bottom of the coil support 2, and the circuit board 3 can be placed on the bearing surface 202 of the bottom of the coil support 2 as a whole, so that the size of the U-shaped yoke 1 does not increase due to the addition of the circuit board 3 between the side plate and the coil support 2. It should be noted that the coil support 2 generally has an upper plate and a lower plate, and the coil 14 is wound in the area between the upper plate and the lower plate, but there is generally a certain gap between the coil 14 and the U-shaped yoke 1, and the circuit board 3 of the present application can be arranged in the gap, so that the original arrangement of the coil support 2 and the U-shaped yoke 1 is not affected, so that the circuit board 3 is integrated in the U-shaped yoke 1 while the size of the magnetic circuit mechanism is unchanged, thereby effectively reducing the increase in the peripheral space of the magnetic circuit mechanism due to the arrangement of the circuit board 3.

[0060] In addition, the bearing surface 202 is provided with a gap 203, and the bearing surface 304 of the circuit board 3 is provided with a limiting protrusion 303, so that when the bearing surface 304 of the circuit board 3 is in contact with the bearing surface 202 of the coil support 2, the limiting protrusion 303 can be embedded in the gap 203, thereby achieving positioning and supporting of the circuit board 3.

[0061] It can be seen that, on the one hand, the arrangement of the gap 102 can ensure that the second injection molding part 4 can reach the circuit board 3, so that the second plug-in terminal 401 is stably electrically connected with the second plug-in port 302; on the other hand, the gap 102 can be used to arrange the second injection molding part 4 as close as possible to the inside of the U-shaped yoke 1, thereby reducing the influence on the horizontal space. The cooperation of the limiting protrusion 303 and the gap 203 can position the circuit board 3, and the cooperation of the two utilizes the space already occupied by the coil support 2 and the circuit board in the horizontal and vertical directions, so that the cooperation of the limiting protrusion 303 and the gap 203 does not increase the occupied space, and compared with the traditional screw fixing method, a certain installation space can also be saved.

[0062] The relay further comprises an insulating cover 10, the insulating cover 10 has a cavity for the working of the contact, and a first injection molding part 11 is arranged on the upper surface of the insulating cover 10, the auxiliary static contact 9 is inserted into the first injection molding part 11, and an auxiliary lead-out sheet electrically connected with the auxiliary static contact 9 is integrally injection molded on the first injection molding part 11.

[0063] It can be understood that a hole can be arranged on the first injection molding part 11, and the auxiliary static contact 9 is inserted into the first injection molding part 11 through the hole. The auxiliary lead-out sheet comprises two conductive sheets 12, one end of the two conductive sheets 12 is located at the hole position of the first injection molding part 11, and the two conductive sheets 12 are electrically connected with the auxiliary static contact 9.

[0064] Further, any one of the conductive sheets 12 has a first section 1201 integrally injection molded with the first injection molded piece 11 and a second section 1202 formed by bending downward from the first section 1201, one end of the first section 1201 being electrically connected with the auxiliary static contact 9, and the first injection molded piece 11 has a bent edge 1101 extending along the second section 1202 and integrally injection molded with part of the second section 1202. In other words, the integrally uninterrupted injection molding of the first injection molded piece 11 and the conductive sheet 12 includes the first section 1201 and at least part of the second section 1202.

[0065] It can be predicted that, on the basis of the integrally formed of the bent edge 1101 and part of the second section 1202, the exposed part of the second section 1202 is located entirely below the bent edge 1101, so that the exposed part of the second section 1202 is not at the same height as the jack, which can effectively avoid the situation that the jack position pollutes the auxiliary conductive sheet 12 when soldering.

[0066] And the provision of the bent edge 1101 can also ensure that the second sections 1202 of the two conductive sheets 12 have certain constraint effect at the upper part, thereby improving the relative stability of the two conductive sheets 12.

[0067] The insulating cover 10 is provided with a containing structure for mounting the main static contact 8, and the containing structure can be a mounting hole formed on the insulating cover 10, and the main static contact 8 can be fixed in the mounting hole. The main static contact 8 is in pairs, and the insulating cover 10 is provided with at least one group of main static contacts 8, one end of the main static contact 8 extends into the insulating cover 10, and the other end has an extension end extending to the outside of the insulating cover 10, and the external circuit can be electrically connected with the main static contact 8 through the extension end.

[0068] The first injection molded piece 11 is provided with a first mounting hole 1102 corresponding to the containing structure, and the main static contact 8 can sequentially penetrate the first mounting hole 1102 and the containing structure; wherein the diameter of the first mounting hole 1102 is greater than the diameter of the containing structure, and the diameter of the first mounting hole 1102 is greater than the diameter of the extension end of the main static contact 8, so that an annular gap is formed between the first mounting hole 1102 and the extension end.

[0069] The shell 16 includes a top wall located above the first injection molded piece 11, and the top wall and the insulating cover 10 cooperate to limit the first injection molded piece 11 in the vertical direction, and the second mounting hole 1602 is provided on the top wall, and the second mounting hole 1602 corresponds to the first mounting hole 1102 in the height direction, that is, the main static contact 8 sequentially penetrates the second mounting hole 1602, the first mounting hole 1102 and the containing structure.

[0070] The second mounting hole 1602 has an annular stopper 1601 extending towards the inside of the first mounting hole 1102, and the annular stopper 1601 and the leading end of the main static contact 8 form an annular groove 17 around the outer periphery of the leading end. As can be seen, by arranging the annular stopper 1601, on the one hand, the annular groove 17 formed between the annular stopper and the leading end can be directly glued, reducing the glue dropping process and being simple and easy to operate; on the other hand, the size of the annular gap formed between the first mounting hole 1102 and the leading end can be reduced, that is, the amount of glue that the annular groove 17 can accommodate is significantly less than the amount of glue that the annular gap can accommodate, thereby reducing the total amount of glue dropping.

[0071] The lower side of the annular stopper 1601 abuts against the upper surface of the insulating cover 10, and the upper side of the annular stopper 1601 is connected to or integrally formed with the top wall of the shell 16, thereby reducing the outward radial overflow of glue in the annular groove 17, so that the glue can be concentrated in the annular groove 17, ensuring the insulation of the outer periphery of the leading end of the main static contact 8. A sealing member such as a sealing gasket can be arranged on the upper surface of the insulating cover 10, and the lower side of the annular stopper 1601 can abut against the sealing member, thereby forming a sealed annular groove 17 to prevent glue overflow.

[0072] The annular stopper 1601 is coaxially arranged with the second mounting hole 1602, or the annular stopper 1601, the second mounting hole 1602 and the first mounting hole 1102 are coaxially arranged, so that the ring width at each position of the annular groove 17 remains consistent, thereby making the annular groove 17 around the outer periphery of the leading end of the main static contact 8 have a consistent ring width, and after the glue dropping is completed, the outer periphery of the leading end of the main static contact 8 can have the same insulation thickness, avoiding the situation that the local insulation effect is poor due to the difference in insulation thickness.

[0073] On this basis, the inner diameter of the annular stopper 1601 can be the same as the diameter of the second mounting hole 1602, that is, the inner wall of the second mounting hole 1602 and the inner wall of the annular stopper 1601 are coplanar in the axial direction, so that the glue is more easily entered and reaches the bottom of the annular groove 17 during glue dropping, thereby making the glue more easily fill the annular groove 17. In addition, the inner diameter of the annular stopper 1601 can also be greater than the diameter of the second mounting hole 1602, that is, the inner wall of the second mounting hole 1602 and the inner wall of the annular stopper 1601 are not coplanar in the axial direction, so that the diameter of the glue in the annular groove 17 is greater than the diameter of the second mounting hole 1602 during glue dropping, thereby making the second mounting hole 1602 have a limiting effect on the glue in the axial direction, ensuring the stability of the glue and further improving the insulation effect of the leading end of the main static contact 8.

[0074] In some embodiments, the diameter of the first mounting hole 1102 can be equal to the outer diameter of the annular shoulder 1601, so that after the annular shoulder 1601 is inserted into the first mounting hole 1102, the inner wall of the first mounting hole 1102 abuts against the outer wall of the annular shoulder 1601, so that the annular shoulder 1601 limits the horizontal displacement of the first injection molding part 11, thereby avoiding the failure of the electrical plug-in part caused by the horizontal displacement of the first injection molding part 11.

[0075] The diameter of the first mounting hole 1102 can also be greater than the outer diameter of the annular shoulder 1601, so that an assembly gap is formed between the inner wall of the first mounting hole 1102 and the outer wall of the annular shoulder 1601. During assembly, the existence of the assembly gap makes it easier to insert the annular shoulder 1601 into the first mounting hole 1102, and at the same time, the small size of the assembly gap also allows the annular shoulder 1601 to limit the first injection molding part 11 in a certain horizontal direction, thereby avoiding excessive displacement of the first injection molding part 11.

[0076] The above embodiments show that the inner circle of the annular shoulder 1601 is configured as a cylindrical hollow structure. In some embodiments, the inner circle of the annular shoulder 1601 can also be configured as a circular truncated cone hollow structure with a narrow upper part and a wide lower part. The upper diameter of the circular truncated cone hollow structure is the same as the diameter of the second mounting hole 1602, and the lower diameter is greater than the diameter of the second mounting hole 1602, so that the annular shoulder 1601 forms an inclined inner wall structure. During dispensing, the glue will form an outer inclined surface in the annular groove 17 that matches the inner wall of the annular shoulder 1601, so as to realize the wedge surface cooperation between the glue and the annular shoulder 1601, and ensure the limiting cooperation between the annular shoulder 1601 and the glue in the axial direction.

[0077] In some embodiments, the second segment 1202 of the conductive sheet 12 and the second injection molding part 4 are located on the same side, or in other words, the second segment 1202 of the conductive sheet 12 and the second injection molding part 4 are both located on the side of the side plate having the avoiding opening 102, and the side plate having the avoiding opening 102 is provided with a positioning rack 6 extending downward along a direction parallel to the side plate. The second segments 1202 of the two conductive sheets 12 can be fixed on the positioning rack 6, thereby realizing the positioning and support of the second segment 1202.

[0078] Among them, the second segments 1202 of the two conductive sheets 12 without the bending edge 1101 are fixed on the positioning rack 6, that is, the second segments 1202 located on the lower side of the bending edge 1101 are fixed on the positioning rack 6, and the positioning rack 6 has an expansion space for the deformation of the second segment 1202. Compared with the technical solution of simultaneous injection molding of the second segment 1202, the conductive sheet 12 of the present application only has the first segment 1201 and part of the second segment 1202 integrally injection molded with the first injection molding part 11, and the remaining part is in an independent state. Therefore, if one conductive sheet 12 deforms, it will not affect the working performance of the other conductive sheet 12, thereby avoiding mutual influence.

[0079] Since the positioning frame 6 and the second section 1202 both extend downward, and the positioning plate can be attached to the surface of the side plate, the horizontal space is saved as much as possible, ensuring the compactness of the relay structure. At the same time, the positioning frame 6 extends in the same direction as the second section 1202, and one side of the positioning frame 6 has a supporting surface 601 in contact with the second section 1202 of the two conductive sheets 12. When the second section 1202 of the conductive sheet 12 is positioned on the positioning frame 6, the second section 1202 of the conductive sheet 12 can be attached to the supporting surface 601 of the positioning frame 6, thereby providing stable support for the conductive sheet 12.

[0080] The supporting surface 601 is provided with a positioning structure, which can cooperate with the second section 1202 of the conductive sheet 12 to constrain the second section 1202 on the supporting surface 601, preventing loosening or shaking.

[0081] The above-mentioned positioning structure includes a first positioning column 602 provided on the positioning frame 6, and a first positioning hole 1205 provided on the second section 1202 of the conductive sheet 12 and cooperating with the first positioning column 602. When the second section 1202 of the conductive sheet 12 is assembled to the positioning frame 6, the first positioning column 602 can be inserted into the first positioning hole 1205, thereby achieving the positioning effect of the conductive sheet 12.

[0082] The supporting surface 601 is also provided with an insulating partition plate 603, which is located between the second sections 1202 of the two conductive sheets 12 and extends away from the supporting surface 601, so that the extension end exceeds the side wall of the second section 1202 away from the supporting surface 601, thereby improving the insulation effect of the two conductive sheets 12 and preventing arc discharge and short circuit accidents in a high-voltage environment.

[0083] It should be noted that the insulating partition plate 603 can extend on the supporting surface 601 in the direction of the second section 1202, ensuring that the second sections 1202 of the two conductive sheets 12 have a long enough insulating length; on the other hand, it extends away from the supporting surface 601 or perpendicular to the supporting surface 601, ensuring that the second sections 1202 of the two conductive sheets 12 have a long enough insulating height, thereby ensuring the insulation effect of the two second sections 1202.

[0084] In some embodiments, one side of the second section 1202 can be in contact with the insulating partition plate 603, so that the insulating partition plate 603 can also play a certain positioning role for the conductive sheet 12, ensuring the stability of the conductive sheet 12; the second section 1202 can also be arranged separately from the insulating partition plate 603, so that the second section 1202 and the insulating partition plate 603 have a certain expansion space therebetween. Even if the second section 1202 deforms, it will also be affected by the expansion space, ensuring that the deformation amount will not directly affect the positioning frame 6, and there is no problem of affecting the working performance of the other conductive sheet 12.

[0085] In addition, the second section 1202 of the conductive sheet 12 is positioned on the positioning frame 6 by the cooperation of the first positioning column 602 and the first positioning hole 1205, and the positioning effect of the first injection molding part 11 on the conductive sheet 12, so even if the other side walls of the outer periphery of the second section 1202 (except for the side wall in contact with the support surface 601) are not in contact with the positioning frame 6, the stability is still good, so the side wall of the second section 1202 away from the insulating partition 603 can be arranged not to be in contact with the positioning frame 6, and the side wall of the second section 1202 away from the support surface 601 can be arranged not to be in contact with the positioning frame 6, so that the positioning frame 6 provides sufficient expansion space for the outer periphery of the second section 1202 to avoid interference with the positioning frame 6 when the conductive sheet 12 is deformed, affecting the positioning effect of the positioning frame 6 and affecting the working performance of the other conductive sheet 12.

[0086] The insertion position of the auxiliary static contact 9 and the first injection molding part 11 can be located in the middle of the first injection molding part 11, or on the side of the first injection molding part 11 away from the second section 1202, so that the insertion hole position on the first injection molding part 11 is far away from the exposed area of the second section 1202, which can also avoid the pollution of the conductive sheet during soldering. The bent edge 1101 is located at the end of the first injection molding part 11 and extends downward to the lower side of the first injection molding part 11, so that the exposed area of the second section 1202 is located on the lower side of the first injection molding part 11.

[0087] The second positioning hole 101 is arranged on the side plate of the U-shaped yoke 1, and the second positioning column 604 is arranged on the positioning frame 6 and cooperates with the second positioning hole 101, so that the positioning frame 6 can be fixedly connected with the U-shaped yoke 1 through the cooperation of the second positioning column 604 and the second positioning hole 101, thereby ensuring the positioning effect of the positioning frame 6.

[0088] The second injection molding part 4 can be separately arranged with the positioning frame 6, or can be integrally formed with the positioning frame 6, so as to further enhance the positioning effect of the second injection molding part 4 through the positioning frame 6; specifically, the second injection molding part 4 can be integrally formed with the positioning frame 6 or the second positioning column 604.

[0089] The base 13 is arranged at the bottom of the shell 16, and the shell 16 is fixedly connected with the base 13 to form a cavity structure for accommodating the insulating cover 10 and the magnetic circuit mechanism; the form of fixed connection includes but is not limited to clamping, bolt connection, etc.

[0090] The U-shaped yoke 1 can be placed on the base 13, one side wall of the shell 16 abuts against the side plate of the U-shaped yoke 1, and the other opposite side wall of the shell 16 can abut against the positioning frame 6, so as to limit the displacement of the U-shaped yoke 1 and the positioning frame 6 in the horizontal direction.

[0091] The base plate 5 is arranged at the upper end of the U-shaped yoke 1 and can be clamped with the two side plates of the U-shaped yoke 1. The coil support 2 is arranged in the cavity formed by the U-shaped yoke 1 and the base plate 5. The top wall of the shell 16 is abutted against the first injection molding part 11 through the annular stopper 1601, so that the vertical displacement of the magnetic circuit mechanism and the insulating cover 10 is limited, and the structural stability of the relay is ensured.

[0092] The through hole is arranged on the shell 16 and penetrates the second injection molding part 4. The second plug-in terminal 401 is led out of the second injection molding part 4 and is located outside the shell 16. The second plug-in terminal 401 can be used for external control circuit to control the coil 14 to generate a magnetic field.

[0093] The fourth segment 1204 is parallel to the second segment 1202 and can be connected to an external circuit.

[0094] The insulating cover 10 can be a ceramic cover made of ceramic material. The magnetic steel support 7 is arranged outside the ceramic cover. The magnetic steel 15 is clamped between the side wall of the insulating cover 10 and the magnetic steel support 7. The specific arrangement mode and working principle of the magnetic steel support 7 and the magnetic steel 15 are not described here again, and can be referred to the prior art.

[0095] The column foot 1103 is arranged on the two opposite sides of the first injection molding part 11 and extends downward. The column foot 1103 can be limitedly matched with the upper edge of the magnetic steel support 7 and / or the magnetic steel 15. The limited matching includes limited abutment, limited clamping, plug-in and the like. The limited clamping includes but is not limited to buckle connection, adhesion and the like. The specific forms are not described here again, and all fall within the protection scope of the application.

[0096] The foot 701 is arranged at the bottom of the magnetic steel support 7 and abuts against the base plate 5. The top end of the magnetic steel support 7 abuts against the column foot 1103 of the first injection molding part 11, and the upper end of the first injection molding part 11 abuts against the annular stopper 1601 of the shell 16. Therefore, the vertical displacement of the magnetic steel support 7 can be limited through this mode.

[0097] The magnetic steel support 7 is arranged on the two opposite sides of the insulating cover 10. The outer wall of one magnetic steel support 7 abuts against the side wall of the shell 16, and the outer wall of the other magnetic steel support 7 abuts against the positioning frame 6. When the positioning frame 6 is horizontally limited, the magnetic steel support 7 can also be horizontally limited, so that the positioning effect of the two magnetic steel supports 7 in the horizontal direction is ensured.

[0098] The main static contact 8 and the auxiliary static contact 9 both extend into the working cavity of the insulating cover 10, and the main active contact 19 and the auxiliary active contact 20 are arranged in the working cavity of the insulating cover 10 and are in transmission connection with the magnetic circuit mechanism, so that the main static contact 8 is electrically connected and the auxiliary static contact 9 is electrically connected.

[0099] Further, the magnetic circuit mechanism further comprises an axial cavity arranged on the coil support 2 and a transmission rod 18 movably arranged in the axial cavity, one end of the transmission rod 18 is connected with a magnet, the other end of the transmission rod 18 penetrates through the base plate 5 and extends into the insulating cover 10, and a lifting support is arranged at the end of the transmission rod 18, the main active contact 19 and the auxiliary active contact 20 are arranged on the lifting support; the magnet moves towards the insulating cover 10 in the magnetic field generated by the coil 14, so as to drive the transmission rod 18 to move towards the main static contact 8 (the auxiliary static contact 9), and then the transmission rod 18 drives the main active contact 19 (the auxiliary active contact 20) on the lifting support to move towards the main static contact 8 (the auxiliary static contact 9), so that the main static contact 8 is electrically connected and the auxiliary static contact 9 is electrically connected.

[0100] Considering that the main active contact 19 should be separated from the main static contact 8 after the magnetic field generated by the coil 14 disappears, an elastic member can be sleeved on the outer periphery of the transmission rod 18, and the elastic force of the elastic member is used to reset the transmission rod 18 and the magnet, so that the main active contact 19 and the auxiliary active contact 20 are ready for the next operation.

[0101] In some embodiments, in the front-rear direction, the side walls on the front and rear sides of the second injection molding part 4 do not exceed the U-shaped yoke 1 or the circuit board 3, so that the size of the U-shaped yoke 1 and the circuit board 3 is used to reduce the influence of the second injection molding part 4 on the volume of the relay in the front-rear direction, thereby improving the compactness of the relay.

[0102] In addition, the limiting protrusion 303 can abut against the coil support 2 outside the outer circle of the accommodation opening 203 in the horizontal direction, so as to limit the position of the coil support 2 and ensure the stability of the circuit board 3 under the condition that the first plug-in port 301 is tin soldered with the first plug-in terminal 201. Meanwhile, a groove 204 can be arranged on the bearing surface 202 of the coil support 2, and the groove 204 can be used to provide space for accommodating the welding points of the second plug-in port 302 and the second plug-in terminal 401, thereby saving space in the horizontal direction.

[0103] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between the entities.

[0104] The principles and implementations of the present application are described in detail with specific examples in this paper, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A compact high voltage relay, characterized by, The utility model relates to a magnetic circuit mechanism, including U type yoke (1) and coil support (2) in the inside of U type yoke (1), U type yoke (1) has the side plate of forming two U shapes wall and the bottom plate of forming U shape bottom, be equipped with circuit board (3) between side plate with coil support (2), be equipped with with first plug interface (301) of first plug terminal (201) of the first plug interface (301) of coil support (2) of inserting of first plug terminal (201) in circuit board (3), first plug terminal (201) is used for electric connection coil (14) with first plug interface (301), be equipped with with second plug interface (302) of second plug interface (302) of electrically conducting of first plug interface (301) in circuit board (3), side plate is equipped with with the second plug interface (302) corresponding avoidance mouth (102), Second injection molding (4) integrally injection molding has with the second plug interface (302) and electrically conducting second plug terminal (401) of inserting, second injection molding (4) with side plate has overlapping portion at avoidance mouth (102), Wherein, the lower side of the circuit board (3) has a supporting surface (304) in contact with the bottom supporting surface (202) of the coil support (2), the supporting surface (202) is provided with a clearance (203), the supporting surface (304) is provided with a limiting protrusion (303) matched with the clearance (203) to realize positioning and supporting, the supporting surface (202) is provided with a groove (204), and the groove (204) is used to provide space for accommodating welding points for the second plug interface (302) and the second plug terminal (401); It further includes an auxiliary lead-out sheet, the auxiliary lead-out sheet includes two conductive sheets (12), the conductive sheet (12) has a first section (1201) and a second section (1202) formed by bending downward from the first section (1201), the side plate having the avoidance mouth (102) is provided with a positioning rack (6), and the second sections (1202) of the two conductive sheets (12) are fixed on the positioning rack (6); One side of the positioning rack (6) has a supporting surface (601) in contact with the second sections (1202) of the two conductive sheets (12), and the supporting surface (601) is further provided with an insulating partition plate (603), the insulating partition plate (603) is located between the second sections (1202) of the two conductive sheets (12), and the insulating partition plate (603) extends away from the supporting surface (601), so that the extension end thereof exceeds the side wall of the second section (1202) away from the supporting surface (601), the second section (1202) and the insulating partition plate (603) are spaced apart, and the second section (1202) is arranged in non-contact with the positioning rack (6) except the side wall opposite to the supporting surface (601). It further includes an insulating cover (10) located on the upper side of the magnetic circuit mechanism, and the insulating cover (10) has a cavity for contact point operation.

2. The compact high voltage relay according to claim 1, characterized in that ​ The upper surface of the insulating cover (10) is provided with a first injection molding part (11), the first injection molding part (11) is inserted with an auxiliary static contact (9), and the first injection molding part (11) is integrally injection molded with the auxiliary lead-out sheet electrically connected with the auxiliary static contact (9); The first injection molding part (11) is integrally injection molded with the first section (1201), and the second section (1202) extends downward along the side wall of the insulating cover (10) and the side plate.

3. The compact high voltage relay according to claim 2, characterized in that The second section (1202) is located on the same side as the second injection molding part (4), and the positioning frame (6) extends downward along the direction parallel to the side plate.

4. The compact high voltage relay according to claim 3, characterized in that The outer side of the side plate is provided with a second positioning hole (101), and the positioning frame (6) is provided with a second positioning column (604) matched with the second positioning hole (101); The positioning frame (6) is separately provided with the second injection molding part (4), or the second injection molding part (4) is integrally formed with the positioning frame (6).

5. The compact high voltage relay according to claim 3, wherein Further comprising a shell (16) and a base (13) located at the bottom of the shell (16), the shell (16) and the base (13) are fixedly connected to form a cavity structure for accommodating the insulating cover (10) and the magnetic circuit mechanism; The U-shaped yoke iron (1) is placed on the base (13), one side wall of the shell (16) abuts against the side plate, and the other side wall of the shell (16) abuts against the positioning frame (6) to limit the horizontal displacement of the U-shaped yoke iron (1) and the positioning frame (6); Two side plates are provided with a base plate (5) at the upper end, the insulating cover (10) is arranged on the base plate (5), the coil support (2) is located in the cavity formed by the U-shaped yoke iron (1) and the base plate (5), and the top wall of the shell (16) abuts against the first injection molding part (11) to limit the vertical displacement of the magnetic circuit mechanism and the insulating cover (10).

6. The compact high voltage relay according to claim 5, characterized in that The side wall of the shell (16) is provided with a through hole for the second injection molding part (4) to pass out, one end of the second plug-in terminal (401) away from the second plug-in port (302) is led out to the outside of the second injection molding part (4) and located on the outside of the shell (16) for external connection of a control circuit; The conductive sheet (12) further has a third section (1203) formed by bending the second section (1202) and a fourth section (1204) formed by bending the third section (1203), the third section (1203) is located on the upper surface of the second injection molding part (4) and led out to the outside of the shell (16) through the through hole, and the fourth section (1204) is used for connecting an external working circuit.

7. The compact high voltage relay according to claim 5, wherein A magnetic steel support (7) is arranged between the outer wall of the insulating cover (10) and the side wall of the shell (16), and a magnetic steel (15) is clamped between the magnetic steel support (7) and the side wall of the insulating cover (10); The magnetic steel support (7) is provided with a support leg (701) at the bottom, which abuts against the base plate (5), and the top of the magnetic steel support (7) abuts against the first injection molding part (11) to limit the vertical displacement of the magnetic steel support (7); The magnetic steel support (7) is located on both sides of the insulating cover (10), the outer wall of one of the magnetic steel supports (7) abuts against the side wall of the shell (16), and the outer wall of the other magnetic steel support (7) abuts against the positioning frame (6) to limit the horizontal displacement of the magnetic steel support (7).

8. The compact high voltage relay according to claim 5, wherein Further comprising a main static contact (8) which penetrates the top wall of the shell (16), the first injection molding part (11) and the insulating cover (10) in sequence, and the main static contact (8) and the auxiliary static contact (9) both extend into the working cavity of the insulating cover (10). The working cavity of the insulating cover (10) is provided with a main active contact (19) and an auxiliary active contact (20) which are in driving connection with the magnetic circuit mechanism, so as to realize the electrical conduction of the main static contact (8) and the electrical conduction of the auxiliary static contact (9).

9. The compact high voltage relay according to claim 1, wherein In the front-rear direction, the side walls on the front and rear sides of the second injection molding part (4) do not exceed the side plate or the circuit board (3).

10. The compact high voltage relay according to claim 1, characterized in that The limiting protrusion (303) abuts against the coil support (2) of the outer circle of the accommodation opening (203) in the horizontal direction.

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