High-voltage direct-current relay

Abstract

The utility model discloses a high-voltage direct-current relay which comprises a static contact, an auxiliary contact, a ceramic cover, a circuit board, a switching assembly, a leading-out assembly, a coil frame and a coil terminal, the coil terminal is installed on the coil frame, and the ceramic cover and the coil frame are distributed up and down. The static contact and the auxiliary contact are fixed at the top end of the ceramic cover at an interval and extend into the cavity of the ceramic cover; the circuit board is arranged at the top end of the ceramic cover and electrically connected with the auxiliary contact, the switching assembly is arranged on the side portion of the ceramic cover, the coil terminal is electrically connected with the circuit board through the switching assembly, the leading-out assembly is arranged on the side portion of the ceramic cover and the side portion of the coil frame, and the leading-out assembly comprises a coil leading-out assembly and an auxiliary contact leading-out assembly. The upper ends of the coil leading-out assembly and the auxiliary contact leading-out assembly are electrically connected with the circuit board and correspondingly electrically connected with the switching assembly and the auxiliary contact, and the lower ends of the coil leading-out assembly and the auxiliary contact leading-out assembly are led out outwards in the same direction. The relay has the characteristics of small size and simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a high-voltage direct current relay. Background Art

[0002] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. In fact, it is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A high-voltage DC relay is a type of relay. Most existing high-voltage DC relays adopt a moving spring direct-acting (also called solenoid direct-acting) structure. Its contact part includes two static contacts (i.e., load lead terminals) and a moving assembly. The moving assembly includes a moving spring part and a push rod assembly. The moving spring part is bridge-fitted between the two static contacts and installed on the top of the push rod assembly. Through the reciprocating motion of the push rod assembly, the two moving contacts of the moving spring part are respectively in contact with or separated from the two static contacts. When in contact, the current flows into one of the static contacts, passes through the moving spring part, and flows out from the other static contact.

[0004] With the rapid development of new energy and the continuous expansion of relay application fields, more and more customers are currently requiring relays with auxiliary contacts. The auxiliary contacts and static contacts are generally set at the top wall of the ceramic cover. The two static contacts usually carry high voltage and high current, while the auxiliary contacts are usually used as feedback contacts. Their working environment is low voltage and low current, which requires consideration of the insulation problem between high voltage and low voltage. In addition, in the application of new energy, the lead-out terminal of the auxiliary contact needs to be led out from the bottom of the relay in the same direction as the lead-out terminal of the coil. For example, a 4P IN connector is used for integrated quick plug-in lead-out. Under this lead-out structure, the relay also has the requirement of small size. Utility Model Content

[0005] In order to overcome at least one of the defects of the above-mentioned prior art, the utility model provides a high-voltage DC relay, which solves the insulation problem of high voltage and low voltage with an auxiliary contact, and meets the requirement that the lead-out ends of the auxiliary contact and the lead-out ends of the coil terminal are led out from the bottom of the relay in the same direction, and has the characteristics of small size and simple structure.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A high-voltage DC relay comprises: two stationary contacts, two auxiliary contacts, a ceramic cover and a coil assembly, wherein the coil assembly comprises a coil frame and a coil terminal, the coil terminal is mounted on the coil frame, the ceramic cover and the coil frame are arranged in an upper and lower distribution, and the two stationary contacts and the two auxiliary contacts are fixed at intervals on the top of the ceramic cover and extend into the cavity of the ceramic cover;

[0008] It also includes: a circuit board, an adapter assembly and a lead-out assembly. The circuit board is arranged at the top of the ceramic cover and is electrically connected to the two auxiliary contacts. The adapter assembly is arranged on the side of the ceramic cover. The coil terminal is electrically connected to the circuit board through the adapter assembly. The lead-out assembly is arranged on the side of the ceramic cover and the coil frame. The lead-out assembly includes a coil lead-out assembly and an auxiliary contact lead-out assembly. The upper ends of the coil lead-out assembly and the auxiliary contact lead-out assembly are both electrically connected to the circuit board, and are electrically connected to the adapter assembly and the auxiliary contacts correspondingly. The lower ends of the coil lead-out assembly and the auxiliary contact lead-out assembly are led outward in the same direction.

[0009] Furthermore, the relay also includes a shell, the shell includes an upper cover and a bottom plate, the upper cover is arranged on the bottom plate to form a accommodating cavity of the shell, two static contacts, two auxiliary contacts, a ceramic cover, a coil assembly, a circuit board, a adapter assembly and a lead-out assembly are all arranged in the accommodating cavity of the shell, and the upper ends of the two static contacts extend upward to pass through the top of the upper cover.

[0010] Furthermore, the circuit board is provided with two avoidance holes, and the positions of the two avoidance holes correspond one-to-one to the positions of the two static contacts, so that the upper ends of the two static contacts pass through the corresponding avoidance holes and extend to the top of the circuit board, and the two static contacts are insulated from the circuit board.

[0011] Furthermore, an insulating portion is provided between the static contact and the corresponding avoidance hole, and the insulating portion extends upward from the top of the ceramic cover to beyond the circuit board.

[0012] Furthermore, the insulating portion extends upward from the top of the ceramic cover to the top inner wall of the upper cover, and forms an integral structure with the upper cover.

[0013] Furthermore, the circuit board is provided with two auxiliary contact jacks adapted to the two auxiliary contacts, the positions of the two auxiliary contact jacks correspond one-to-one to the positions of the two auxiliary contacts, and the upper ends of the two auxiliary contacts are plugged into the corresponding auxiliary contact jacks to electrically connect the two auxiliary contacts to the circuit board.

[0014] Furthermore, the adapter assembly includes a first insulating member and a first conductive member, the first conductive member is arranged in the first insulating member, the lower end of the first conductive member is electrically connected to the coil terminal, and the upper end of the first conductive member is electrically connected to the circuit board.

[0015] Furthermore, the first insulating member is provided with a first groove adapted to the first conductive member, the first conductive member is installed in the first groove, and a baffle is extended on the side wall of the first groove toward the first conductive member to clamp the first conductive member in the first groove.

[0016] Furthermore, the first conductive part includes a first extension portion, a first pin and a first connecting portion, the first extension portion is arranged on the side of the ceramic cover, the first connecting portion is arranged at the lower end of the first extension portion and is electrically connected to the coil terminal, the first pin is arranged at the upper end of the first extension portion, and the circuit board is provided with a first socket adapted to the first pin, the position of the first socket corresponds to the position of the first pin, and the first pin is plugged into the corresponding first socket to achieve electrical connection.

[0017] Furthermore, the first conductive part is an L-shaped structure, the first extension portion and the first pin are both vertically arranged, the first connecting portion is away from the ceramic cover and extends laterally from the bottom end of the first extension portion, and the first connecting portion is provided with a plug-in hole adapted to the coil terminal, the position of the plug-in hole corresponds to the position of the coil terminal, and the coil terminal is plugged into the corresponding plug-in hole to achieve electrical connection.

[0018] Furthermore, the first groove is an L-shaped structure adapted to the first conductive part, and the first groove includes a vertical groove adapted to the first extension part and a transverse groove adapted to the first connection part. The first extension part is installed in the vertical groove, and the first connection part is installed in the transverse groove. The distance that the transverse groove extends laterally away from the ceramic cover is smaller than the distance that the first connection part extends laterally away from the ceramic cover, and the plug-in hole is located outside the transverse groove.

[0019] Furthermore, the bottom of the first insulating member is installed on the coil frame, the first insulating member has an insert plate extending toward the coil frame, the coil frame is provided with a slot adapted to the insert plate, the position of the insert plate corresponds to the position of the slot, and the insert plate is inserted into the slot.

[0020] Further, the coil lead-out assembly includes a second extension portion, a second plug pin and a coil lead-out pin, the second extension portion is arranged on the side of the ceramic cover and the coil frame, the second plug pin is arranged on the upper end of the second extension portion, the circuit board is provided with a second jack adapted to the second plug pin, the position of the second jack corresponds to the position of the second plug pin, and the second plug pin is plugged into the corresponding second jack to achieve electrical connection;

[0021] The auxiliary contact lead-out assembly comprises a third extension portion, a third plug pin and an auxiliary contact lead-out pin, wherein the third extension portion is arranged on the side of the ceramic cover and the coil frame, the third plug pin is arranged on the upper end of the third extension portion, the circuit board is provided with a third jack adapted to the third plug pin, the position of the third jack corresponds to the position of the third plug pin, and the third plug pin is plugged into the corresponding third jack to achieve electrical connection;

[0022] The coil lead pin is arranged at the lower end of the second extension part, the auxiliary contact lead pin is arranged at the lower end of the third extension part, and the coil lead pin and the auxiliary contact lead pin are led out of the housing in the same direction.

[0023] Furthermore, the coil lead leg extends laterally from the lower end of the second extension portion away from the ceramic cover, and is bent vertically upward to lead out of the shell;

[0024] The auxiliary contact lead pin extends laterally from the lower end of the third extension portion, away from the ceramic cover, and is bent vertically upward to be led out of the shell.

[0025] Furthermore, there is a spacing between the bottom of the upper cover and the base plate corresponding to the position of the lateral section of the coil lead pin and the lateral section of the auxiliary contact lead pin, and the spacing is adapted to the lateral section of the coil lead pin and the lateral section of the auxiliary contact lead pin, so that the coil lead pin and the auxiliary contact lead pin can pass horizontally between the bottom of the upper cover and the base plate and bend vertically upward to lead out of the upper cover.

[0026] Furthermore, a connector socket is provided on the lower side of the upper cover, and the coil lead pins and the auxiliary contact lead pins are led out to the connector socket in the same direction.

[0027] Furthermore, a plurality of reinforcing ribs are vertically arranged on the inner wall of the upper cover and the inner wall of the connector socket corresponding to the positions of the coil lead-out assembly and the auxiliary contact lead-out assembly.

[0028] Furthermore, the lead-out assembly also includes a second insulating member, which is provided with a second groove adapted to the coil lead-out assembly and a third groove adapted to the auxiliary contact lead-out assembly. The coil lead-out assembly is installed in the second groove, and the auxiliary contact lead-out assembly is installed in the third groove.

[0029] In summary, the beneficial effects of the high voltage DC relay provided by the utility model are as follows:

[0030] The utility model installs a circuit board on the top of the ceramic cover, cleverly utilizes the structure of the circuit board, and combines the settings of the adapter component and the lead-out component to electrically connect the auxiliary contact and the auxiliary contact lead-out component through the circuit board, and electrically connect the coil terminal and the coil lead-out component through the circuit board and the adapter component, and then leads the lower ends of the coil lead-out component and the auxiliary contact lead-out component outward in the same direction, so that the lead-out end of the auxiliary contact of the relay with the auxiliary contact and the lead-out end of the coil terminal can be led out from the bottom of the relay in the same direction.

[0031] Furthermore, since the lead-out end of the static contact is located at the top of the ceramic cover, the lead-out end of the auxiliary contact is led out from the bottom of the relay via the circuit board and the auxiliary contact lead-out assembly, thereby achieving effective isolation between the strong current end and the weak current end.

[0032] At the same time, the relay has the characteristics of simple structure and small size, which meets the customer's requirements for miniaturization of high-voltage DC relays. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the main structure of the high voltage DC relay of the utility model;

[0034] Figure 2 It is a partial structural schematic diagram of a high voltage DC relay of the utility model;

[0035] Figure 3 It is an exploded view of the coil assembly of the utility model;

[0036] Figure 4 It is a structural schematic diagram of the circuit board of the utility model;

[0037] Figure 5 It is a cross-sectional view of the structure composed of the housing and the circuit board of the utility model;

[0038] Figure 6 It is a structural schematic diagram of a high voltage DC relay of the utility model;

[0039] Figure 7 It is an exploded view of the housing of the utility model;

[0040] Figure 8 This is a schematic diagram of the structure in which the coil assembly of the utility model is electrically connected to the circuit board through the adapter assembly;

[0041] Fig. 9 It is an exploded view of the adapter assembly of the utility model;

[0042] Fig.10 It is a schematic diagram of the connection relationship of the lead-out components of the utility model;

[0043] Fig.11 It is an exploded view of the lead-out assembly of the utility model;

[0044] Fig.12 It is an exploded view of the yoke and the lead-out assembly of the utility model.

[0045] The meanings of the reference numerals are as follows:

[0046] 1. Shell; 11. Upper cover; 111. Through hole; 112. Notch; 12. Bottom plate; 121. Connecting plate; 122. Protrusion; 13. Insulating part; 14. Connector socket; 15. Reinforcement rib; 2. Stationary contact; 3. Auxiliary contact; 4. Ceramic cover; 5. Coil assembly; 51. Coil frame; 511. Upper bracket; 512. Winding shaft; 513. Lower bracket; 514. Slot; 52. Coil terminal; 53. Coil; 6. Circuit board; 61. Avoidance hole; 62. Auxiliary contact socket; 63. First socket; 64. Second socket; 65. Third socket; 7. Adapter assembly; 71. First insulating member; 711. First groove; 7111. Vertical groove; 7112. Horizontal groove Groove; 712, baffle; 713, plug plate; 72, first conductive member; 721, first extension; 722, first pin; 723, first connecting portion; 7231, plug hole; 8, lead-out assembly; 81, coil lead-out assembly; 811, second extension; 812, second pin; 813, coil lead-out pin; 814, second through hole; 82, auxiliary contact lead-out assembly; 821, third extension; 822, third pin; 823, auxiliary contact lead-out pin; 824, third through hole; 83, third insulating member; 831, second groove; 832, third groove; 833, second protrusion; 834, third protrusion; 835, first protrusion; 9, yoke; 91, fixing hole. DETAILED DESCRIPTION

[0047] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0050] The utility model provides a high voltage DC relay, referring to Figure 1It includes two stationary contacts 2, two auxiliary contacts 3, a ceramic cover 4 and a coil assembly 5. The coil assembly 5 includes a coil frame 51 and a coil terminal 52. The coil terminal 52 is installed on the coil frame 51. The ceramic cover 4 and the coil frame 51 are arranged in an upper and lower distribution. The two stationary contacts 2 and the two auxiliary contacts 3 are fixed at intervals on the top of the ceramic cover 4 and extend into the cavity of the ceramic cover 4.

[0051] Specifically, see Figure 2 A cavity is provided inside the ceramic cover 4, and two static contact assembly ports adapted to the two static contacts 2 are provided at the top of the ceramic cover 4. The two static contact assembly ports are arranged at intervals and communicated with the internal cavity of the ceramic cover 4, so that the two static contacts 2 are correspondingly assembled on the two static contact assembly ports, and the lower ends of the two static contacts 2 extend downward into the cavity of the ceramic cover 4, and the upper ends of the two static contacts 2 are away from the ceramic cover 4 and extend upward to be exposed above the ceramic cover 4.

[0052] The top of the ceramic cover 4 is also provided with two auxiliary contact assembly ports adapted to the two auxiliary contacts 3. The two auxiliary contact assembly ports are spaced apart and connected to the internal cavity of the ceramic cover 4, so that the two auxiliary contacts 3 are correspondingly assembled on the two auxiliary contact assembly ports, and the lower ends of the two auxiliary contacts 3 extend downward into the cavity of the ceramic cover 4, and the upper ends of the two auxiliary contacts 3 are away from the ceramic cover 4 and extend upward to be exposed above the ceramic cover 4.

[0053] In addition, the auxiliary contact assembly opening and the static contact assembly opening are spaced apart, so that on the basis of the insulation between the two static contacts 2 and the insulation between the two auxiliary contacts 3, the static contact 2 and the auxiliary contact 3 are also insulated, thereby achieving effective insulation between high voltage and low voltage.

[0054] Theoretically, as long as the two static contacts 2 and the two auxiliary contacts 3 can be insulated by the ceramic cover 4, the installation positions of the two static contacts 2 and the two auxiliary contacts 3 on the ceramic cover 4 can be arbitrarily selected, such as same-side installation, cross installation, etc., and the installation positions are various. Preferably, the ceramic cover 4 of the utility model is a quasi-rectangular structure, the two static contacts 2 are installed on the ceramic cover 4 at intervals along the first direction, and the two auxiliary contacts 3 are installed on the ceramic cover 4 at intervals along the second direction. The first direction is perpendicular to the second direction, and the first direction is the length direction of the ceramic cover 4, and the second direction is the width direction of the ceramic cover 4. In this way, the two static contacts 2 and the two auxiliary contacts 3 can be sufficiently dispersed, which is more conducive to the insulation between high voltage and low voltage. The spacing between the two static contacts 2 and the two auxiliary contacts 3 is determined by the size of the ceramic cover 4 and the specific installation environment, and is not limited here.

[0055] See also Figure 3The coil frame 51 includes an upper bracket 511, a winding shaft 512 and a lower bracket 513. The winding shaft 512 is arranged vertically, the upper bracket 511 is installed at the top of the winding shaft 512, and the lower bracket 513 is installed at the bottom of the winding shaft 512. The projections of the upper bracket 511 and the lower bracket 513 on the horizontal plane both exceed the projection of the winding shaft 512 on the horizontal plane. The coil terminal 52 is installed in the upper bracket 511 and extends to the outside of the upper bracket 511. The coil assembly 5 also includes a coil 53, which is wound on the winding shaft 512. The coil 53 can be a single coil. In the present utility model, the coil 53 is a double coil.

[0056] Combination Figure 1 and Figure 3 The ceramic cover 4 of the present invention is arranged above the coil frame 51, and the projection of the upper bracket 511 of the coil frame 51 on the horizontal plane exceeds the projection of the long side of the ceramic cover 4 on the horizontal plane, and the projection of the short side of the ceramic cover 4 on the horizontal plane exceeds the projection of the upper bracket 511 on the horizontal plane. Based on this structure, the coil terminal 52 can be arranged at the position of the upper bracket 511 corresponding to the short side of the ceramic cover 4. Preferably, the coil terminal 52 of the present invention is arranged on the side of the upper bracket 511 corresponding to the long side of the ceramic cover 4, and extends to the outside of the upper bracket 511, thereby, the projection of the coil terminal 52 on the horizontal plane is outside the projection of the ceramic cover 4 on the horizontal plane, which is convenient for the connection of subsequent components.

[0057] See also Figure 1 The high-voltage DC relay of the utility model also includes a circuit board 6, a switching assembly 7 and a lead-out assembly 8. The circuit board 6 is arranged at the top of the ceramic cover 4 and is electrically connected to the two auxiliary contacts 3. The switching assembly 7 is arranged at the side of the ceramic cover 4. The coil terminal 52 is electrically connected to the circuit board 6 through the switching assembly 7. The lead-out assembly 8 is arranged at the side of the ceramic cover 4 and the coil frame 51. The lead-out assembly 8 includes a coil lead-out assembly 81 and an auxiliary contact lead-out assembly 82. The upper ends of the coil lead-out assembly 81 and the auxiliary contact lead-out assembly 82 are both electrically connected to the circuit board 6, and are correspondingly electrically connected to the switching assembly 7 and the auxiliary contacts 3. The lower ends of the coil lead-out assembly 81 and the auxiliary contact lead-out assembly 82 are led outward in the same direction.

[0058] Therefore, the utility model installs the circuit board 6 on the top of the ceramic cover 4, cleverly utilizes the structure of the circuit board 6, and combines the settings of the adapter component 7 and the lead-out component 8, so as to electrically connect the auxiliary contact 3 and the auxiliary contact lead-out component 82 through the circuit board 6, and electrically connect the coil terminal 52 and the coil lead-out component 81 through the circuit board 6 and the adapter component 7, and then by leading the lower ends of the coil lead-out component 81 and the auxiliary contact lead-out component 82 outward in the same direction, the lead-out end of the auxiliary contact 3 of the relay with the auxiliary contact 3 and the lead-out end of the coil terminal 52 can be led out from the bottom of the relay in the same direction, so as to meet the requirements of the integrated quick plug-in lead-out of the connector in the new energy field. In addition, since the lead-out end of the static contact 2 is located at the top of the ceramic cover 4, the lead-out end of the auxiliary contact 3 is led out from the bottom of the relay through the adapter of the circuit board 6 and the auxiliary contact lead-out component 82, so as to achieve effective isolation of the strong current end and the weak current end. At the same time, the relay has the characteristics of simple structure and small size, which meets the customer's requirements for miniaturization of high-voltage DC relays.

[0059] Combination Figure 1 and Figure 4 The circuit board 6 is provided with two avoidance holes 61, and the positions of the two avoidance holes 61 correspond to the positions of the two static contacts 2 one by one, so that the upper ends of the two static contacts 2 pass through the corresponding avoidance holes 61 and extend to the top of the circuit board 6, and the two static contacts 2 are insulated from the circuit board 6. The circuit board 6 is provided with two auxiliary contact jacks 62 adapted to the two auxiliary contacts 3, and the positions of the two auxiliary contact jacks 62 correspond to the positions of the two auxiliary contacts 3 one by one, and the upper ends of the two auxiliary contacts 3 are plugged into the corresponding auxiliary contact jacks 62, so that the two auxiliary contacts 3 are electrically connected to the circuit board 6. Therefore, the circuit board 6 is sleeved over the two static contacts 2 and the two auxiliary contacts 3 to be stably installed on the top of the ceramic cover 4.

[0060] Specifically, after the upper ends of the two auxiliary contacts 3 are inserted into the corresponding auxiliary contact sockets 62 , they are fixed by welding to achieve a stable electrical connection between the auxiliary contacts 3 and the circuit board 6 .

[0061] In order to ensure the insulation between the two stationary contacts 2 and the circuit board 6, the projections of the two avoidance holes 61 on the horizontal plane exceed the projections of the corresponding stationary contacts 2 on the horizontal plane, so that there is a gap between the corresponding stationary contacts 2 and the hole walls of the avoidance holes 61, thereby preventing the stationary contacts 2 from contacting the circuit board 6. If only the gap is set, once the circuit board 6 is not firmly fixed and moves, the stationary contacts 2 are likely to contact the hole walls of the avoidance holes 61, which may cause insulation failure or the circuit board 6 may affect the working current and working voltage of the stationary contacts 2.

[0062] Therefore, see Figure 5An insulating portion 13 is provided between the static contact 2 of the utility model and the corresponding avoidance hole 61 , and the insulating portion 13 extends upward from the top of the ceramic cover 4 to exceed the circuit board 6 , so as to achieve effective insulation between the static contact 2 and the circuit board 6 through the insulating portion 13 .

[0063] Specifically, the insulating portion 13 may be a separate component that extends upward from the top of the ceramic cover 4 to just beyond the circuit board 6. Alternatively, the insulating portion 13 may also be fixed to the top of the ceramic cover 4 to prevent the insulating portion 13 from being displaced to achieve better insulation.

[0064] In the utility model, see Figure 6 and Figure 7 The relay also includes a housing 1, which includes an upper cover 11 and a bottom plate 12. The upper cover 11 is covered on the bottom plate 12 to form an accommodating cavity of the housing 1. Two static contacts 2, two auxiliary contacts 3, a ceramic cover 4, a coil assembly 5, a circuit board 6, a transfer assembly 7 and a lead-out assembly 8 are all arranged in the accommodating cavity of the housing 1, and the upper ends of the two static contacts 2 extend upward to pass through the top of the upper cover 11.

[0065] Specifically, two through holes 111 adapted for the static contacts 2 are formed through the top of the upper cover 11 , and the positions of the two through holes 111 correspond one to one with the positions of the two static contacts 2 . The upper ends of the two static contacts 2 extend upward through the corresponding through holes 111 to pass through the top of the upper cover 11 .

[0066] On the basis of this structure, the insulating part 13 of the utility model extends upward from the top of the ceramic cover 4 to the inner wall of the top of the upper cover 11, and forms an integral structure with the upper cover 11. Specifically, the insulating part 13 of the utility model extends downward from the inner wall of the through hole 111 to contact the top of the ceramic cover 4, and the insulating part 13 and the upper cover 11 are an integral structure, so as to achieve insulation between the static contact 2 and the circuit board 6. Compared with the insulating part 13 fixed on the top of the ceramic cover 4, since the structure of the ceramic cover 4 is generally a rectangular parallelepiped structure, it is necessary to set up an additional fixing structure to achieve the fixing of the insulating part 13 and the top of the ceramic cover 4, such as screw fixing, rivet fixing, clamping fixing, plug fixing, etc., which is not only complicated in process, but also easy to damage the ceramic cover 4. The utility model forms an integral structure of the insulating part 13 and the upper cover 11, simplifies the structure and assembly process of the relay, and the insulating part 13 can also play the role of a reinforcing rib, which can further improve the strength of the upper cover 11.

[0067] The upper cover 11 and the bottom plate 12 are fixedly connected by snapping, see Figure 7The side end of the bottom plate 12 is provided with a connecting plate 121 extending upward. When the upper cover 11 is placed on the bottom plate 12, the connecting plate 121 is arranged close to the inner wall of the bottom end of the upper cover 11. The connecting plate 121 is provided with a convex portion 122 protruding toward the bottom side wall of the upper cover 11. The bottom side wall of the upper cover 11 is provided with a notch 112 adapted to the convex portion 122. The convex portion 122 is clamped in the corresponding notch 112 to achieve the connection between the upper cover 11 and the bottom plate 12.

[0068] Furthermore, there are multiple connecting plates 121, which are spaced apart and dispersed at the outer peripheral side ends of the bottom plate 12, and each of the connecting plates 121 is provided with a convex portion 122. The number of the notches 112 is equal to the number of the convex portions 122, and the positions correspond one to one. Thus, a firm connection between the upper cover 11 and the bottom plate 12 can be ensured. The specific number of connecting plates 121 is determined by the size of the bottom plate 12 and the installation environment, and is not limited here.

[0069] See also Figure 8 Since the coil terminal 52 of the utility model is arranged on the side of the upper bracket 511 corresponding to the long side of the ceramic cover 4 and extends to the outside of the upper bracket 511, the projection of the coil terminal 52 on the horizontal plane is outside the projection of the ceramic cover 4 on the horizontal plane. Figure 1 , the projection of the circuit board 6 on the horizontal plane exceeds the projection of the long side of the ceramic cover 4 on the horizontal plane. Therefore, when the coil terminal 52 is electrically connected to the circuit board 6 through the adapter assembly 7, the adapter assembly 7 can be arranged on the outer side of the long side of the ceramic cover 4 and arranged vertically. In addition, there are generally multiple coil terminals 52, the number of adapter assemblies 7 is equal to the number of coil terminals 52, and the adapter assemblies 7 are connected to the coil terminals 52 in a one-to-one correspondence. In the utility model, three coil terminals 52 are provided, and correspondingly, three adapter assemblies 7 are also provided.

[0070] See also Fig. 9 The adapter assembly 7 includes a first insulating member 71 and a first conductive member 72 . The first conductive member 72 is disposed inside the first insulating member 71 . The lower end of the first conductive member 72 is electrically connected to the coil terminal 52 , and the upper end of the first conductive member 72 is electrically connected to the circuit board 6 .

[0071] Specifically, the first conductive member 72 includes a first extension portion 721, a first pin 722 and a first connecting portion 723. The first extension portion 721 is vertically arranged on the side of the ceramic cover 4, the first connecting portion 723 is arranged at the lower end of the first extension portion 721 and is electrically connected to the coil terminal 52, the first pin 722 is arranged at the upper end of the first extension portion 721, and the circuit board 6 is provided with a first socket 63 adapted to the first pin 722. The position of the first socket 63 corresponds to the position of the first pin 722, and the first pin 722 is plugged into the corresponding first socket 63 to achieve electrical connection.

[0072] The first conductive member 72 of the utility model is an L-shaped structure, the first extension portion 721 and the first pin 722 are both arranged vertically, the first connecting portion 723 is away from the ceramic cover 4 and extends laterally from the bottom end of the first extension portion 721, and the first connecting portion 723 is provided with a plug-in hole 7231 adapted to the coil terminal 52, the position of the plug-in hole 7231 corresponds to the position of the coil terminal 52, and the coil terminal 52 is plugged into the corresponding plug-in hole 7231 to achieve electrical connection.

[0073] Specifically, after the first pin 722 is inserted into the corresponding first plug hole 63, it is fixed by welding to achieve a stable electrical connection between the first conductive member 72 and the circuit board 6. After the coil terminal 52 is inserted into the corresponding plug hole 7231, it is fixed by welding to achieve a stable electrical connection between the coil terminal 52 and the first conductive member 72. Thus, a stable electrical connection between the coil terminal 52 and the circuit board 6 can be achieved through the first conductive member 72.

[0074] The first insulating member 71 defines a first groove 711 adapted to the first conductive member 72 . The first conductive member 72 is installed in the first groove 711 . A baffle 712 extends from the side wall of the first groove 711 toward the first conductive member 72 to clamp the first conductive member 72 in the first groove 711 .

[0075] Specifically, the first groove 711 is an L-shaped structure adapted to the first conductive member 72, which includes a vertical groove 7111 adapted to the first extension portion 721 and a transverse groove 7112 adapted to the first connection portion 723, the first extension portion 721 is installed in the vertical groove 7111, and the first connection portion 723 is installed in the transverse groove 7112. The distance that the transverse groove 7112 extends laterally away from the ceramic cover 4 is smaller than the distance that the first connection portion 723 extends laterally away from the ceramic cover 4, and the plug hole 7231 is located outside the transverse groove 7112. In this way, it can be ensured that the first conductive member 72 is stably installed in the first insulating member 71.

[0076] In order to improve the installation stability of the first insulating member 71, the bottom of the first insulating member 71 is installed on the coil frame 51, and the first insulating member 71 has an insert plate 713 extending toward the coil frame 51. The coil frame 51 is provided with a slot 514 adapted to the insert plate 713. The positions of the insert plate 713 and the slot 514 correspond, and the insert plate 713 is inserted in the slot 514.

[0077] Specifically, the first insulating member 71 is installed on the upper bracket 511 , and the side of the upper bracket 511 corresponding to the coil terminal 52 extends upward to form a slot 514 that adapts to the plug board 713 , so that the first insulating member 71 is fixed on the upper bracket 511 by plugging the plug board 713 into the slot 514 .

[0078] The lead-out assembly 8 of the present invention is arranged on the side of the ceramic cover 4 and the coil frame 51, and its position can be arbitrary, for example, it can be arranged on the same side as the adapter assembly 7. In the present invention, the lead-out assembly 8 is arranged on the short side of the ceramic cover 4. Fig.10 and Fig.12 The utility model has two coil lead-out components 81 and two auxiliary contact lead-out components 82 to adapt to the 4P IN connector. The coil lead-out component 81 includes a second extension 811, a second pin 812 and a coil lead-out pin 813. The second extension 811 is vertically arranged on the side of the ceramic cover 4 and the coil frame 51. The second pin 812 is arranged at the upper end of the second extension 811. The circuit board 6 is provided with a second jack 64 adapted to the second pin 812. The position of the second jack 64 corresponds to the position of the second pin 812. The second pin 812 is plugged into the corresponding second jack 64 to achieve electrical connection. The auxiliary contact lead-out assembly 82 includes a third extension 821, a third pin 822 and an auxiliary contact lead-out pin 823. The third extension 821 is arranged on the side of the ceramic cover 4 and the coil frame 51. The third pin 822 is arranged at the upper end of the third extension 821. The circuit board 6 is provided with a third jack 65 adapted to the third pin 822. The position of the third jack 65 corresponds to the position of the third pin 822. The third pin 822 is plugged into the corresponding third jack 65 to achieve electrical connection. The coil lead-out pin 813 is arranged at the lower end of the second extension 811, and the auxiliary contact lead-out pin 823 is arranged at the lower end of the third extension 821. The coil lead-out pin 813 and the auxiliary contact lead-out pin 823 are led out of the housing 1 in the same direction.

[0079] Specifically, after the second pin 812 is inserted into the corresponding second jack 64, it is fixed by welding to achieve a stable electrical connection between the coil lead-out assembly 81 and the circuit board 6. After the third pin 822 is inserted into the corresponding third jack 65, it is fixed by welding to achieve a stable electrical connection between the auxiliary contact lead-out assembly 82 and the circuit board 6.

[0080] The coil lead pin 813 extends laterally from the lower end of the second extension portion 811 away from the ceramic cover 4 and bends vertically upward to lead out of the housing 1. The auxiliary contact lead pin 823 extends laterally from the lower end of the third extension portion 821 away from the ceramic cover 4 and bends vertically upward to lead out of the housing 1.

[0081] There is a spacing between the bottom of the upper cover 11 and the bottom plate 12 corresponding to the position of the lateral section of the coil lead pin 813 and the lateral section of the auxiliary contact lead pin 823. The spacing is adapted to the lateral section of the coil lead pin 813 and the lateral section of the auxiliary contact lead pin 823 so that the coil lead pin 813 and the auxiliary contact lead pin 823 can smoothly pass horizontally between the bottom of the upper cover 11 and the bottom plate 12 and bend vertically upward to lead out of the upper cover 11.

[0082] A connector socket 14 is provided at the lower side of the upper cover 11, and the coil lead pins 813 and the auxiliary contact lead pins 823 are led out in the same direction into the connector socket 14, so as to realize the plugging of the coil lead pins 813 and the auxiliary contact lead pins 823 with the connector in the connector socket 14. Specifically, the coil lead pins 813 and the auxiliary contact lead pins 823 pass horizontally between the bottom of the upper cover 11 and the bottom plate 12 and are bent vertically upward to be led out into the connector socket 14. In addition, the coil lead pins 813, the auxiliary contact lead pins 823, and the coil lead pins 813 and the auxiliary contact lead pins 823 are arranged at intervals to achieve insulation.

[0083] At the same time, a plurality of reinforcing ribs 15 are vertically provided on the inner wall of the upper cover 11 and the inner wall of the connector socket 14 corresponding to the positions of the coil lead-out assembly 81 and the auxiliary contact lead-out assembly 82 to improve the strength of the upper cover 11 and the connector socket 14 and avoid damage to the lead-out assembly 8.

[0084] See also Fig.11 The lead-out assembly 8 also includes a second insulating member 83, which is provided with a second groove 831 adapted to the coil lead-out assembly 81 and a third groove 832 adapted to the auxiliary contact lead-out assembly 82. The coil lead-out assembly 81 is installed in the second groove 831, and the auxiliary contact lead-out assembly 82 is installed in the third groove 832.

[0085] Specifically, the second groove 831 is adapted to the second extension portion 811 , the third groove 832 is adapted to the third extension portion 821 , the second extension portion 811 is installed in the second groove 831 , and the third extension portion 821 is installed in the third groove 832 .

[0086] The second groove 831 is provided with a second protrusion 833 protruding toward the second extension portion 811, and the second extension portion 811 is provided with a second through hole 814 adapted to the second protrusion 833. The second protrusion 833 is arranged corresponding to the second through hole 814, and the second protrusion 833 is arranged in the second through hole 814, so that the second extension portion 811 is fixed in the second groove 831. The third groove 832 is provided with a third protrusion 834 protruding toward the third extension portion 821, and the third extension portion 821 is provided with a third through hole 824 adapted to the third protrusion 834. The position of the third protrusion 834 corresponds to the position of the third through hole 824, and the third protrusion 834 is arranged in the third through hole 824, so that the third extension portion 821 is fixed in the third groove 832.

[0087] In addition, the relay of the present invention further includes a U-shaped yoke 9, a coil frame 51 is arranged in the U-shaped yoke 9, the U-shaped yoke 9 embraces the bottom surface of the coil frame 51 and two opposite sides corresponding to the lead-out assembly 8, and the side wall of the U-shaped yoke 9 is arranged corresponding to the lead-out assembly 8. The second insulating member 83 is provided with a first protrusion 835 protruding toward the side wall of the U-shaped yoke 9, and the side wall of the yoke 9 is provided with a fixing hole 91 adapted to the first protrusion 835, the fixing hole 91 corresponds to the position of the first protrusion 835, and the first protrusion 835 is arranged in the fixing hole 91 to achieve a fixed connection between the lead-out assembly 8 and the yoke 9.

[0088] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A high voltage DC relay, characterized in that: include: Two stationary contacts (2), two auxiliary contacts (3), a ceramic cover (4) and a coil assembly (5), wherein the coil assembly (5) comprises a coil frame (51) and a coil terminal (52), wherein the coil terminal (52) is mounted on the coil frame (51), the ceramic cover (4) and the coil frame (51) are arranged in an upper and lower distribution, and the two stationary contacts (2) and the two auxiliary contacts (3) are fixed at intervals on the top of the ceramic cover (4) and extend into the cavity of the ceramic cover (4); The invention also comprises: a circuit board (6), a switching assembly (7) and a lead-out assembly (8); the circuit board (6) is arranged at the top of the ceramic cover (4) and is electrically connected to the two auxiliary contacts (3); the switching assembly (7) is arranged at the side of the ceramic cover (4); the coil terminal (52) is electrically connected to the circuit board (6) through the switching assembly (7); the lead-out assembly (8) is arranged at the side of the ceramic cover (4) and the coil frame (51); the lead-out assembly (8) comprises a coil lead-out assembly (81) and an auxiliary contact lead-out assembly (82); the upper ends of the coil lead-out assembly (81) and the auxiliary contact lead-out assembly (82) are both electrically connected to the circuit board (6) and are correspondingly electrically connected to the switching assembly (7) and the auxiliary contacts (3); the lower ends of the coil lead-out assembly (81) and the auxiliary contact lead-out assembly (82) are led outward in the same direction.

2. The high voltage DC relay according to claim 1, characterized in that: The relay further comprises a housing (1), the housing (1) comprising an upper cover (11) and a bottom plate (12), the upper cover (11) being arranged on the bottom plate (12) to form a receiving cavity of the housing (1), the two stationary contacts (2), the two auxiliary contacts (3), the ceramic cover (4), the coil assembly (5), the circuit board (6), the adapter assembly (7) and the lead-out assembly (8) being arranged in the receiving cavity of the housing (1), and the upper ends of the two stationary contacts (2) extending upward to pass through the top end of the upper cover (11).

3. The high voltage DC relay according to claim 2, characterized in that: The circuit board (6) is provided with two avoidance holes (61), and the positions of the two avoidance holes (61) correspond to the positions of the two stationary contacts (2) one by one, so that the upper ends of the two stationary contacts (2) pass through the corresponding avoidance holes (61) and extend to the top of the circuit board (6), and the two stationary contacts (2) are insulated from the circuit board (6).

4. The high voltage DC relay according to claim 3, characterized in that: An insulating portion (13) is provided between the stationary contact (2) and the corresponding avoidance hole (61), and the insulating portion (13) extends upward from the top of the ceramic cover (4) to beyond the circuit board (6).

5. The high voltage DC relay according to claim 4, characterized in that: The insulating portion (13) extends upward from the top of the ceramic cover (4) to the inner wall of the top of the upper cover (11), and forms an integral structure with the upper cover (11).

6. The high voltage DC relay according to claim 1, characterized in that: The circuit board (6) is provided with two auxiliary contact jacks (62) adapted to the two auxiliary contacts (3); the positions of the two auxiliary contact jacks (62) correspond one to one with the positions of the two auxiliary contacts (3); the upper ends of the two auxiliary contacts (3) are plugged into the corresponding auxiliary contact jacks (62) so that the two auxiliary contacts (3) are electrically connected to the circuit board (6).

7. The high voltage DC relay according to claim 1, characterized in that: The adapter assembly (7) comprises a first insulating member (71) and a first conductive member (72), wherein the first conductive member (72) is arranged inside the first insulating member (71), the lower end of the first conductive member (72) is electrically connected to the coil terminal (52), and the upper end of the first conductive member (72) is electrically connected to the circuit board (6).

8. The high voltage DC relay according to claim 7, characterized in that: The first insulating member (71) is provided with a first groove (711) adapted to the first conductive member (72); the first conductive member (72) is installed in the first groove (711); a baffle (712) is extended from a side wall of the first groove (711) toward the first conductive member (72) so as to clamp the first conductive member (72) in the first groove (711).

9. The high voltage DC relay according to claim 8, characterized in that: The first conductive member (72) comprises a first extension portion (721), a first pin (722) and a first connection portion (723); the first extension portion (721) is arranged on the side of the ceramic cover (4); the first connection portion (723) is arranged at the lower end of the first extension portion (721) and is electrically connected to the coil terminal (52); the first pin (722) is arranged at the upper end of the first extension portion (721); the circuit board (6) is provided with a first jack (63) adapted to the first pin (722); the position of the first jack (63) corresponds to the position of the first pin (722); the first pin (722) is plugged into the corresponding first jack (63) to achieve electrical connection.

10. The high voltage DC relay according to claim 9, characterized in that: The first conductive member (72) is an L-shaped structure. The first extension portion (721) and the first plug pin (722) are both arranged vertically. The first connecting portion (723) is away from the ceramic cover (4) and extends laterally from the bottom end of the first extension portion (721). The first connecting portion (723) is provided with a plug hole (7231) adapted to the coil terminal (52). The position of the plug hole (7231) corresponds to the position of the coil terminal (52). The coil terminal (52) is plugged into the corresponding plug hole (7231) to achieve electrical connection.

11. The high voltage DC relay according to claim 10, characterized in that: The first groove (711) is an L-shaped structure adapted to the first conductive member (72), and the first groove (711) includes a vertical groove (7111) adapted to the first extension portion (721) and a transverse groove (7112) adapted to the first connection portion (723). The first extension portion (721) is installed in the vertical groove (7111), and the first connection portion (723) is installed in the transverse groove (7112). The distance that the transverse groove (7112) extends laterally away from the ceramic cover (4) is smaller than the distance that the first connection portion (723) extends laterally away from the ceramic cover (4), and the plug hole (7231) is located outside the transverse groove (7112).

12. The high voltage DC relay according to claim 7, characterized in that: The bottom of the first insulating member (71) is mounted on the coil frame (51); the first insulating member (71) is provided with an insert plate (713) extending toward the coil frame (51); the coil frame (51) is provided with a slot (514) adapted to the insert plate (713); the position of the insert plate (713) corresponds to the position of the slot (514); and the insert plate (713) is inserted into the slot (514).

13. The high voltage DC relay according to claim 2, characterized in that: The coil lead-out assembly (81) comprises a second extension portion (811), a second plug pin (812) and a coil lead-out pin (813); the second extension portion (811) is arranged on the side of the ceramic cover (4) and the coil frame (51); the second plug pin (812) is arranged at the upper end of the second extension portion (811); the circuit board (6) is provided with a second plug hole (64) adapted to the second plug pin (812); the position of the second plug hole (64) corresponds to the position of the second plug pin (812); the second plug pin (812) is plugged into the corresponding second plug hole (64) to achieve electrical connection; The auxiliary contact lead-out assembly (82) comprises a third extension portion (821), a third plug pin (822) and an auxiliary contact lead-out pin (823); the third extension portion (821) is arranged on the side of the ceramic cover (4) and the coil frame (51); the third plug pin (822) is arranged at the upper end of the third extension portion (821); the circuit board (6) is provided with a third jack (65) adapted to the third plug pin (822); the position of the third jack (65) corresponds to the position of the third plug pin (822); the third plug pin (822) is plugged into the corresponding third jack (65) to achieve electrical connection; The coil lead pin (813) is arranged at the lower end of the second extension portion (811), and the auxiliary contact lead pin (823) is arranged at the lower end of the third extension portion (821). The coil lead pin (813) and the auxiliary contact lead pin (823) are led out of the housing (1) in the same direction.

14. The high voltage DC relay according to claim 13, characterized in that: The coil lead pin (813) extends laterally from the lower end of the second extension portion (811) away from the ceramic cover (4), and is bent vertically upward to be led out of the housing (1); The auxiliary contact lead-out pin (823) extends laterally from the lower end of the traced back third extension portion (821) away from the ceramic cover (4), and is bent vertically upward to be led out of the housing (1).

15. The high voltage DC relay according to claim 14, characterized in that: There is a spacing between the bottom of the upper cover (11) and the bottom plate (12) corresponding to the position of the transverse section of the coil lead pin (813) and the transverse section of the auxiliary contact lead pin (823), and the spacing is adapted to the transverse section of the coil lead pin (813) and the transverse section of the auxiliary contact lead pin (823), so that the coil lead pin (813) and the auxiliary contact lead pin (823) pass horizontally between the bottom of the upper cover (11) and the bottom plate (12) and bend vertically upward to lead out of the upper cover (11).

16. The high voltage DC relay according to claim 13, characterized in that: A connector socket (14) is provided on the lower side of the upper cover (11), and the coil lead pin (813) and the auxiliary contact lead pin (823) are led out into the connector socket (14) in the same direction.

17. The high voltage DC relay according to claim 16, characterized in that: The inner wall of the upper cover (11) and the inner wall of the connector socket (14) corresponding to the positions of the coil lead-out assembly (81) and the auxiliary contact lead-out assembly (82) are vertically provided with a plurality of reinforcing ribs (15).

18. The high voltage DC relay according to claim 13, characterized in that: The lead-out assembly (8) also includes a second insulating member (83), the second insulating member (83) being provided with a second groove (831) adapted to the coil lead-out assembly (81) and a third groove (832) adapted to the auxiliary contact lead-out assembly (82), the coil lead-out assembly (81) being installed in the second groove (831), and the auxiliary contact lead-out assembly (82) being installed in the third groove (832).

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