High-low voltage isolation assembly, relay and switching device

Abstract

The utility model relates to a high-low voltage isolation assembly, a relay and a switching device. The high-low voltage isolation assembly comprises an insulating part and a conductive part. A first conductive contact piece is arranged on the insulating piece, the first conductive contact piece is used for being electrically connected with a first external circuit, and a mounting groove is formed in the side, opposite to the first conductive contact piece, of the insulating piece; and the conductive piece comprises a main body and a mounting convex part arranged on the conductive main body, a second conductive contact piece is arranged in the conductive main body, the second conductive contact piece is used for being electrically connected with a second external circuit, and the mounting convex part is mounted in the mounting groove. The high-low voltage isolation assembly can effectively isolate high voltage and low voltage, and is beneficial to improvement of insulation and voltage resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric control devices, in particular to a high-low voltage isolation assembly, a relay and a switching device. BACKGROUND

[0002] A relay is a common switching device, which is used to control the on-off of a large electrical signal (or current) by a small electrical signal (or current) in a circuit, and is widely used in new energy vehicles, charging piles, photovoltaic power generation, energy storage systems and other fields.

[0003] Some relays have multiple conductive assemblies, part of which carries high voltage and the other part carries low voltage. When the conductive assembly carrying low voltage is assembled with the conductive assembly carrying high voltage through an insulating part, the two conductive assemblies need to be connected through metal parts such as rivets.

[0004] However, due to the presence of metal parts on the insulating seat, the high and low voltage on the two conductive contacts is easy to break down the insulating part, resulting in ineffective insulation and isolation of the two conductive assemblies, and poor insulation withstand voltage between the two conductive assemblies. INVENTION CONTENTS

[0005] Therefore, it is necessary to provide a high-low voltage isolation assembly, a relay and a switching device, which can effectively isolate high and low voltage, and improve the insulation withstand voltage.

[0006] On the one hand, a high-low voltage isolation assembly is provided,

[0007] an insulating part, the insulating part is provided with a first conductive contact, the first conductive contact is used to electrically connect a first external circuit, and the side of the insulating part opposite to the first conductive contact is provided with a mounting groove; and

[0008] a conductive part, the conductive part includes a conductive body and a mounting protrusion provided on the conductive body, the conductive body is provided with a second conductive contact, the second conductive contact is used to electrically connect a second external circuit, and the mounting protrusion is mounted in the mounting groove.

[0009] In one embodiment, the insulating part includes an insulating body and a mounting block provided on the insulating body, the first conductive contact is provided on the side of the insulating body away from the conductive part, the mounting block at least partially protrudes from the side of the insulating body away from the first conductive contact, and the part of the mounting block protruding from the insulating body is provided with the mounting groove.

[0010] In one of the embodiments, the mounting block has two, the mounting blocks are spaced apart, each of the mounting blocks is provided with the mounting slot, the conductive body is located between the two mounting blocks, the mounting protrusions are respectively provided on both sides of the conductive body towards the two mounting slots, the mounting protrusions on both sides of the conductive body correspond to the two mounting slots one by one, and the mounting protrusions are inserted into the corresponding mounting slots.

[0011] In one of the embodiments, the insulating body is provided with a pressing block on the side away from the first conductive contact, the pressing block at least partially protrudes from the side of the insulating body towards the conductive body, the pressing block is located between the two mounting slots, the pressing block is pressed against one side of the conductive body to limit the movement of the mounting protrusions in the mounting slots.

[0012] In one of the embodiments, the mounting slot has a mounting opening on one side in the length direction thereof, the mounting opening is used for inserting the mounting protrusions into the mounting slot, the pressing block is provided with an insertion guide surface on the side away from the insulating body, and the insertion guide surface is close to the mounting opening.

[0013] In one of the embodiments, the insulating member further comprises a stop protrusion provided on the side of the pressing block away from the insulating body, the conductive body is provided with a stop hole, and the stop protrusion is used for being inserted into the stop hole.

[0014] In one of the embodiments, the stop protrusion is provided with a guide surface on the side towards the mounting opening, and the guide surface is used for guiding the stop protrusion to slide into the stop hole.

[0015] In one of the embodiments, the conductive body comprises a fixed plate and two spaced-apart support arms in the length direction of the mounting slot, one end of the support arm is connected to the fixed plate, the fixed plate is provided on one side of the insulating body, the fixed plate is located between the two mounting slots, the second conductive contact is provided on the side of the fixed plate away from the insulating body, the mounting protrusions are provided on the side of the fixed plate towards the mounting slots, and the end of the support arm away from the fixed plate is used for connecting an external component.

[0016] In one of the embodiments, the insulating member further comprises a barrier wall provided on the insulating body, the barrier wall is located on the side of the insulating body away from the conductive member, and the barrier wall protrudes from the side of the first conductive contact away from the conductive member.

[0017] In one of the embodiments, the barrier wall surrounds the periphery of the insulating body and forms a containing slot on the insulating body, and the first conductive contact is arranged in the containing slot.

[0018] In one of the embodiments, the insulating member further comprises an insulating cover arranged at the slot end of the accommodating slot, the first conductive contact is arranged at one side of the accommodating slot towards the insulating cover, and the first conductive contact is in an integral structure with the insulating cover.

[0019] In one of the embodiments, the insulating member further comprises a reinforcing rib connected with the insulating body, the baffle and the mounting block respectively.

[0020] In another aspect, a relay is also provided, which comprises an auxiliary static contact, an auxiliary dynamic contact, a main dynamic contact, a main static contact, a pushing assembly and the high-low voltage isolation assembly as described above, the auxiliary dynamic contact is arranged on the insulating member of the high-low voltage isolation assembly.

[0021] The main dynamic contact is arranged in the conductive member of the high-low voltage isolation assembly, the conductive member can move towards or away from the main static contact, the pushing assembly is connected with the conductive member, and the movement of the pushing assembly can drive the conductive member and the insulating member to move, so as to make the auxiliary dynamic contact and the auxiliary static contact close or open, and make the main dynamic contact and the main static contact close or open.

[0022] In one of the embodiments, the pushing assembly comprises a support seat, a push rod and an elastic member, one end of the support arm of the conductive member away from the fixed plate is connected with the support seat, the main dynamic contact is arranged between the two support arms of the conductive member, and the main dynamic contact is located at the side of the fixed plate away from the insulating body, one end of the push rod is connected with the support seat, and the other end of the push rod protrudes from the side of the support seat away from the fixed plate, and the elastic member is arranged between the main dynamic contact and the support seat.

[0023] In another aspect, a switch device is also provided, which comprises the high-low voltage isolation assembly as described above.

[0024] The high-low voltage isolation assembly as described above, the mounting convex part is mounted in the mounting slot to connect the insulating member with the conductive member, without the need of injecting a metal material fixed plate in the insulating member and avoiding the connection of the insulating member with the conductive member through a rivet, so that the insulating member does not need to be connected with the conductive member through a metal member, which can effectively prolong the insulation distance and the creepage distance of the first conductive contact and the second conductive contact, effectively isolate the high and low voltage of the high-low voltage isolation assembly, reduce the risk of the first conductive contact and the second conductive contact being electrically conducted and the risk of the arc hitting the conductive member, and is beneficial to improve the insulation withstand voltage capacity of the high-low voltage isolation assembly, thereby improving the insulation withstand voltage performance of the relay.

[0025] Further, the insulating body provides support and action for the mounting block and the first conductive contact, the mounting block provides space for the opening of the mounting slot, and reduces the impact on the overall structural strength of the insulating part due to the opening of the mounting slot in the insulating body.

[0026] Further, mounting slots are respectively arranged on the two mounting blocks, and the mounting protrusions on the opposite sides of the conductive body are respectively inserted into the corresponding mounting slots, which is conducive to improving the connection stability of the insulating part and the conductive part, and reducing the risk of shaking of the conductive part relative to the insulating part. In addition, since the two mounting protrusions are inserted into the corresponding mounting slots, the two mounting blocks can respectively wrap the mounting protrusions located on the opposite sides of the conductive body. Thus, the creepage of the second conductive contact needs to bypass the side wall of the mounting slot and the side of the mounting block away from the mounting protrusion on the conductive body to reach the first conductive contact, thereby effectively extending the creepage distance of the second conductive contact to the first conductive contact, and further improving the isolation capability of the high-low voltage isolation assembly.

[0027] Further, the abutting block provides an abutting force for the conductive part, and under the action of the abutting block, the mounting protrusion is tightly attached to the slot side wall of the mounting slot away from the insulating body, which reduces the risk of shaking or moving of the conductive part relative to the insulating part, and is conducive to improving the stability of the relay.

[0028] Further, when the stop hole on the conductive part is opposite to the stop protrusion, the conductive part is continuously pushed, and under the action of the guide surface, the guide protrusion is guided to slide into the stop hole, so that the stop protrusion is inserted into the conductive part. The stop protrusion can limit the conductive part from being pushed in reverse, and thus can limit the conductive part from falling off the insulating part.

[0029] Further, the insertion guide surface is arranged close to the mounting port of the mounting slot, and sufficient space is reserved near the mounting port for the insertion of the mounting protrusion, so as to prevent the mounting protrusion from being unable to be smoothly inserted into the mounting slot due to the blockage of the abutting block. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A structural diagram of a relay in some embodiments of the present application (the insulating cover, the electromagnetic coil assembly, the main static contact, and the auxiliary static contact are not shown in the figure).

[0031] Figure 2 A perspective view of an angle of the high-low voltage isolation assembly and the pushing assembly in some embodiments of the present application.

[0032] Figure 3 Another perspective view of an angle of the high-low voltage isolation assembly and the pushing assembly in some embodiments of the present application.

[0033] Figure 4 A Figure 3 A sectional view in the direction of A-A.

[0034] Figure 5 Another perspective view of the high-low voltage isolation assembly and the pushing assembly in some embodiments of the present application.

[0035] Figure 6 For Figure 5 A sectional view in the direction of B-B.

[0036] Figure 7 A perspective view of the high-low voltage isolation assembly in some embodiments of the present application.

[0037] Figure 8 A top view of the high-low voltage isolation assembly in some embodiments of the present application.

[0038] Figure 9 A side view of the high-low voltage isolation assembly in some embodiments of the present application.

[0039] Figure 10 For Figure 9 A sectional view in the direction of C-C.

[0040] Figure 11 An exploded view of the high-low voltage isolation assembly in some embodiments of the present application.

[0041] Figure 12 An angle view of the insulating member in some embodiments of the present application.

[0042] Figure 13 Another angle view of the insulating member in some embodiments of the present application.

[0043] In the figure:

[0044] 100, high-low voltage isolation assembly; 200, auxiliary movable contact; 300, main movable contact; 400, yoke plate; 500, pushing assembly;

[0045] 1, conductive member; 11, conductive body; 111, fixing plate; 1111, stop hole; 112, support arm; 12, mounting protrusion; 2, insulating member; 21, insulating body; 22, stop protrusion; 221, guide surface; 23, abutting block; 231, insertion guide surface; 24, mounting block; 241, mounting groove; 2411, mounting opening; 25, retaining wall; 26, reinforcing rib; 27, insulating cover; 28, accommodating groove; 3, pushing rod; 4, support seat; 5, elastic member. DETAILED DESCRIPTION

[0046] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the descriptions of the present application are merely intended to explain and describe the application and its principles and the best modes of carrying out the application currently known to the present inventors. Therefore, the scope of the present application should be construed based on the appended claims rather than the detailed description.

[0047] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element 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.

[0048] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0052] Some embodiments of the present application provide a high-low voltage isolation assembly. The following takes the application of the high-low voltage isolation assembly in a relay as an example to introduce the specific structure of the high-low voltage isolation assembly in detail.

[0053] Referring to Figure 1 , some embodiments of the present application provide a relay. Figure 1 The structure diagram of the relay in some embodiments of the present application is shown (the insulating cover, the electromagnetic coil assembly, the main static contact and the auxiliary static contact are not shown in the figure). The relay includes an auxiliary static contact (not shown in the figure), an auxiliary moving contact 200, a main moving contact 300, a main static contact (not shown in the figure), a yoke plate 400, an insulating cover (not shown in the figure), an electromagnetic coil assembly (not shown in the figure), a pushing assembly 500 and a high-low voltage isolation assembly 100. The insulating cover is fixed to the yoke plate 400, the insulating cover is a ceramic cover, a cavity is formed between the yoke plate 400 and the insulating cover, one end of the auxiliary static contact and the main static contact are both fixed to the insulating cover, and the other end of the auxiliary static contact and the main static contact both extend into the cavity, the auxiliary moving contact 200, the main moving contact and the high-low voltage isolation assembly 100 are all arranged in the cavity. One end of the pushing assembly 500 extends into the cavity through the yoke plate 400, and the other end protrudes outside the cavity. The electromagnetic coil assembly is arranged on the side of the yoke plate 400 away from the cavity.

[0054] Referring to Figures 1 to 6, the high-low voltage isolation assembly 100 comprises a first conductive contact provided on the insulating piece 2, the first conductive contact is used for connecting a first external circuit, the insulating piece 2 is provided with a mounting groove 241 on the side opposite to the auxiliary moving contact 200. In the embodiment, the first conductive contact is the auxiliary moving contact 200, the first external circuit is a monitoring circuit, the monitoring circuit is a low-voltage circuit, the auxiliary stationary contact is electrically connected with the monitoring circuit, the auxiliary moving contact 200, the auxiliary stationary contact, the insulating piece 2 and the monitoring circuit form a monitoring part in the relay, the monitoring part is used for monitoring the contact state of the main moving contact 300 and the main stationary contact of the relay, and the reliability of the relay is ensured. The conductive piece 1 comprises a conductive body 11 and a mounting protrusion 12 provided on the conductive body 11, the conductive body 11 is provided with a second conductive contact, the second conductive contact is used for electrically connecting a second external circuit, and the mounting protrusion 12 is mounted in the mounting groove 241. In the embodiment, the second conductive contact is the main moving contact 300, the main stationary contact is electrically connected with the second external circuit, the second external circuit is a load circuit, and the load circuit is a high-voltage circuit. The insulating piece 2 is located on the side of the auxiliary stationary contact, and the insulating piece 2 can move towards or away from the auxiliary stationary contact, and the auxiliary moving contact 200 is provided on the insulating piece 2. The pushing assembly 500 is connected with the conductive body 11 of the conductive piece 1, and the movement of the pushing assembly 500 can drive the conductive piece 1 and the insulating piece 2 to move, so as to close or open the auxiliary moving contact 200 and the auxiliary stationary contact, and close or open the main moving contact 300 and the main stationary contact. In the case that the electromagnetic coil assembly is powered on, the magnetic force of the electromagnetic coil assembly drives the pushing assembly 500 to move, thereby driving the conductive piece 1 and the insulating piece 2 to move, so as to close or open the auxiliary moving contact 200 and the auxiliary stationary contact, and close or open the main moving contact 300 and the main stationary contact. In the embodiment, in the case that the electromagnetic coil assembly is powered on, the pushing assembly 500 is driven to move towards the main stationary contact, the conductive piece 1 and the main moving contact 300 provided in the conductive piece 1 are also driven to move towards the main stationary contact, so that the main moving contact 300 and the main stationary contact are closed, and in the process that the pushing assembly 500 moves towards the main moving contact 300, the insulating piece 2 and the auxiliary moving contact 200 provided on the insulating piece 2 are also driven to move towards the auxiliary stationary contact, so that the auxiliary moving contact 200 and the auxiliary stationary contact are closed, thereby connecting the monitoring circuit; in the case that the electromagnetic coil assembly is powered off, the pushing assembly 500 is reset and drives the conductive piece 1 and the main moving contact 300 to move away from the main stationary contact, so that the main moving contact 300 and the main stationary contact are opened, and drives the insulating piece 2 and the auxiliary moving contact 200 to move away from the auxiliary stationary contact, so that the auxiliary moving contact 200 and the auxiliary stationary contact are opened, thereby disconnecting the monitoring circuit.

[0055] The high-low voltage isolation assembly 100 of the present application connects the insulating piece 2 with the conductive piece 1 by mounting the mounting protrusion 12 in the mounting groove 241, without the need of injecting a metal fixing plate in the insulating piece 2 and avoiding the assembly of the insulating piece 2 with the conductive piece 1 by rivets, so that the insulating piece 2 does not need to be connected with the conductive piece 1 by a metal piece, which can effectively prolong the insulation distance and the creepage distance between the auxiliary movable contact 200 and the main movable contact 300, effectively isolate the high and low voltage of the high-low voltage isolation assembly 100, reduce the risk of the auxiliary movable contact 200 and the main movable contact 300 being electrically conducted and the risk of the arc hitting the conductive piece 1, and is beneficial to improving the insulation withstand voltage capability of the high-low voltage isolation assembly 100, thereby improving the insulation withstand voltage performance of the relay.

[0056] In some embodiments, referring to Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 9 , the insulating piece 2 comprises an insulating body 21 and a mounting block 24 arranged on the insulating body 21, and the auxiliary movable contact 200 is arranged on the side of the insulating body 21 away from the conductive piece 1, and the mounting block 24 at least partially protrudes from the side of the insulating body 21 away from the auxiliary movable contact 200, and the part of the mounting block 24 protruding from the insulating body 21 is provided with the mounting groove 241. In combination with Figure 9 , the insulating body 21 and the conductive piece 1 are distributed along the Z direction, and “the mounting block 24 at least partially protrudes from the side of the insulating body 21 away from the auxiliary movable contact 200” means that the mounting block 24 at least partially protrudes from the side of the insulating body 21 in the Z direction, and at least part of the mounting block 24 protrudes from the insulating body 21 in a direction away from the auxiliary movable contact 200. The insulating body 21 provides support and action for the mounting block 24 and the auxiliary movable contact 200, and the mounting block 24 provides space for the opening of the mounting groove 241, reducing the impact on the overall structural strength of the insulating piece 2 due to the opening of the mounting groove 241 in the insulating body 21. In addition, the auxiliary movable contact 200 is arranged on the side of the insulating body 21 away from the conductive piece 1, which is beneficial to increasing the distance between the auxiliary movable contact 200 and the main movable contact 300, and further reducing the risk of the auxiliary movable contact 200 being conducted by the high voltage on the main movable contact 300.

[0057] In the embodiment, the mounting blocks 24 are two and are spaced apart, each mounting block 24 is provided with a mounting groove 241, the conductive body 11 is located between the two mounting blocks 24, the mounting protrusions 12 on the two sides of the conductive body 11 are respectively provided towards the two sides of the two mounting grooves 241, the mounting protrusions 12 on the two sides of the conductive body 11 correspond to the two mounting grooves 241 one by one, and the mounting protrusions 12 are inserted into the corresponding mounting grooves 241. The mounting grooves 241 are respectively arranged on the two mounting blocks 24, and the mounting protrusions 12 on the opposite sides of the conductive body 11 are respectively inserted into the corresponding mounting grooves 241, which is beneficial to improve the connection stability of the insulating part 2 and the conductive part 1 and reduce the risk of shaking of the conductive part 1 relative to the insulating part 2. In addition, since the two mounting protrusions 12 are inserted into the corresponding mounting grooves 241, the two mounting blocks 24 can wrap the mounting protrusions 12 on the opposite sides of the conductive body 11, so that the creeping of the active contact 300 needs to bypass the side wall of the mounting groove 241 and the side of the mounting block 24 away from the mounting protrusion 12 to reach the auxiliary active contact 200, thereby effectively extending the creeping distance of the auxiliary active contact 200 to the active contact 300, and further improving the isolation capability of the high-low voltage isolation assembly 100.

[0058] Referring to Figure 7 , the mounting block 24 is integrally injection molded with the insulating body 21, so that there is no gap between the mounting block 24 and the insulating body 21, preventing creeping at the gap between the mounting block 24 and the insulating body 21, and ensuring the isolation capability of the high-low voltage isolation assembly 100.

[0059] Referring to Figure 9 , Figure 12 and Figure 13 , the insulating body 21 is provided with a pressing block 23 away from the auxiliary active contact 200, the pressing block 23 at least partially protrudes from the side of the insulating body 21 towards the conductive part 1, and the pressing block 23 is located between the two mounting grooves 241. The pressing block 23 abuts against one side of the conductive part 1 to limit the movement of the mounting protrusion 12 in the mounting groove 241, so that the insulating part 2 and the conductive part 1 are stably connected. The pressing block 23 provides a pressing force for the conductive part 1, and under the action of the pressing block 23, the mounting protrusion 12 is tightly attached to the groove side wall on the side of the mounting groove 241 away from the insulating body 21, which reduces the risk of shaking or moving of the conductive part 1 relative to the insulating part 2, and is beneficial to improve the stability of the relay.

[0060] In order to reduce the difficulty of inserting the mounting protrusion 12 into the mounting groove 241, referring to Figure 10 and Figure 13The mounting slot 241 has a mounting opening 2411 on one side in the length direction of the mounting slot 241, and the abutting block 23 is provided with an insertion guide surface 231 on the side away from the insulating body 21, the insertion guide surface 231 is inclined towards the direction of the conductive part 1 along the insertion direction of the mounting protrusion 12, and the insertion guide surface 231 is arranged close to the mounting opening 2411 of the mounting slot 241, and enough space is reserved near the mounting opening 2411 for the insertion of the mounting protrusion 12, so as to prevent the mounting protrusion 12 from being unable to be smoothly inserted into the mounting slot 241 due to the obstruction of the abutting block 23.

[0061] In some embodiments, referring to Figure 4 , Figure 12 and Figure 13 , the insulating part 2 further comprises a stop protrusion 22 arranged on the side of the abutting block 23 away from the insulating body 21, and the conductive body 11 is provided with a stop hole 1111, and the stop protrusion 22 is arranged in the stop hole 1111. By arranging the stop protrusion 22 in the stop hole 1111, the conductive part 1 can be positioned, and the precise installation of the insulating part 2 and the conductive part 1 can be achieved.

[0062] It can be understood that the position of the stop protrusion 22 on the abutting block 23 may be different in different models of relays, in order to make the conductive part 1 applicable to different models of relays, in the embodiment, referring to Figure 11 , the conductive body 11 is provided with a plurality of stop holes 1111, and the plurality of stop holes 1111 are distributed at intervals, so that when assembling, one of the stop holes 1111 can be inserted according to the position of the stop protrusion 22, and the applicability of the conductive part 1 is improved.

[0063] Referring to Figure 4 and Figure 13The stop protrusion 22 is provided with a guide surface 221 on the side facing the mounting port 2411, and the guide surface 221 is used to guide the stop protrusion 22 to slide into the stop hole 1111. When assembling the high-low voltage isolation assembly 100, the mounting protrusion 12 is inserted into the mounting groove 241 from the mounting port 2411, and then the conductive piece 1 is pushed along the length direction of the mounting groove 241. Since the stop protrusion 22 is provided with the guide surface 221, when the stop hole 1111 on the conductive piece 1 faces the stop protrusion 22, the conductive piece 1 is continuously pushed, and the guide surface 221 is beneficial to guide the stop protrusion 22 to slide into the stop hole 1111, so that the stop protrusion 22 is inserted into the conductive piece 1. The stop protrusion 22 can limit the conductive piece 1 from being pushed in the reverse direction, and further limit the conductive piece 1 from falling off the insulating piece 2. It should be noted that “reverse direction” in the specification refers to the direction opposite to the insertion direction of the mounting protrusion 12; and “insertion direction of the mounting protrusion 12” in the specification refers to the direction along the length direction of the mounting groove 241, in which the mounting protrusion 12 moves from the mounting port 2411 to the inside of the mounting groove 241.

[0064] In some embodiments, referring to Figure 2 , Figure 4 , Figure 6 , Figure 11 and Figure 13 The insulating piece 2 further comprises a barrier wall 25 provided on the insulating body 21, the barrier wall 25 is located on the side of the insulating body 21 away from the conductive piece 1, and the barrier wall 25 protrudes from the side of the auxiliary movable contact 200 away from the conductive piece 1, that is, the barrier wall 25 protrudes from the auxiliary movable contact 200 in the Z direction. Therefore, the barrier wall 25 blocks the creepage on the movable contact 300, so that the creepage on the movable contact 300 needs to bypass the barrier wall 25 to reach the auxiliary movable contact 200, which is beneficial to prolong the creepage distance from the movable contact 300 to the auxiliary movable contact 200, thereby further improving the isolation capability of the high-low voltage isolation assembly 100.

[0065] Referring to Figure 11 The barrier wall 25 surrounds the periphery of the insulating body 21 and forms a containing groove 28 on the insulating body 21, and the auxiliary movable contact 200 is arranged in the containing groove 28. The containing groove 28 provides a containing space for the auxiliary movable contact 200. When the auxiliary movable contact 200 is installed in the containing groove 28, the sidewall (i.e., the barrier wall 25) of the containing groove 28 can effectively increase the creepage distance between the movable contact 300 and the auxiliary movable contact 200, reduce the risk of breakdown of the movable contact 300 and the auxiliary movable contact under high-voltage impact, and further improve the insulation withstand voltage performance of the high-low voltage isolation assembly 100.

[0066] Further, the insulating member further comprises an insulating cover 27, the insulating cover 27 is arranged at the slot end of the accommodating groove 28, the auxiliary movable contact 200 is arranged at one side of the insulating cover 27, and the auxiliary movable contact 200 and the insulating cover 27 are in an integrated structure. In the embodiment, the auxiliary movable contact 200 and the insulating cover 27 are integrally injection molded. The insulating cover 27 is arranged at the slot end of the accommodating groove 28, the insulating cover 27 shields the side of the auxiliary movable contact 200 facing the slot end, thereby increasing the electrical gap between the main stationary contact and the auxiliary movable contact 200, and also preventing the arc between the main movable contact 300 and the main stationary contact from striking the auxiliary movable contact 200 to a certain extent. The auxiliary movable contact 200 and the insulating cover 27 are in an integrated structure, which facilitates the installation of the auxiliary movable contact 200 to the insulating member 2, and the auxiliary movable contact 200 is not easy to fall off from the insulating cover 27. At the same time, the auxiliary movable contact 200 and the insulating cover 27 in an integrated structure can reduce the shaking amount of the auxiliary movable contact 200 relative to the insulating cover 27, and ensure the consistency of the contact between the auxiliary movable contact 200 and the auxiliary stationary contact.

[0067] With reference to Figure 11 and Figure 13 , the insulating member 2 further comprises a reinforcing rib 26, the reinforcing rib 26 is connected with the insulating body 21, the retaining wall 25 and the mounting block 24 respectively, the structure between the insulating body 21 and the retaining wall 25 and between the insulating body 21 and the mounting block 24 is increased through the reinforcing rib 26, thereby reducing the risk of fracture at the connecting part between the insulating body 21 and the retaining wall 25 and at the connecting part between the insulating body 21 and the mounting block 24.

[0068] In some embodiments, with reference to Figure 4 , Figure 7 , Figure 10 and Figure 11The conductive main body 11 includes a fixed plate 111 and two spaced apart support arms 112 along the length direction of the mounting groove 241, one end of the support arm 112 is connected with the fixed plate 111, the fixed plate 111 is arranged on one side of the insulating main body 21, and the fixed plate 111 is located between the two mounting grooves 241, the auxiliary movable contact 200 is arranged on the side of the fixed plate 111 away from the insulating main body 21, the mounting protrusion 12 is arranged on the side of the fixed plate 111 towards the mounting groove 241, and the end of the support arm 112 away from the fixed plate 111 is used for connecting an external component, in this embodiment, the external component is a push assembly 500 of the relay. The end of the support arm 112 away from the fixed plate 111 is used for connecting with the push assembly 500 in the relay. In actual implementation, the end of the two support arms 112 away from the fixed plate 111 is connected with the push assembly 500, so that the push assembly 500 can drive the conductive part 1 to move when the push assembly 500 moves. The fixed plate 111 provides a setting space for the mounting protrusion 12 and provides support for the insulating part 2, and the two support arms 112 are arranged at intervals, so that a space for mounting the driving contact 300 can be reserved between the two support arms 112.

[0069] Referring to Figure 1 , Figure 2 and Figure 4The pushing assembly 500 comprises a support base 4, a pushing rod 3 and an elastic member 5, the support base 4 is an insulator, and the elastic member 5 is a spring. The end of the support arm 112 away from the fixed plate 111 is connected with the support base 4, the active contact 300 is arranged between the two support arms 112 of the conductive member 1, and the active contact 300 is located on the side of the fixed plate 111 away from the insulating body 21, one end of the pushing rod 3 is connected with the support base 4, and the other end protrudes from the side of the support base 4 away from the fixed plate 111, the elastic member 5 is arranged between the two support arms 112, and the opposite ends of the elastic member 5 are connected with the active contact 300 and the support base 4 respectively. In the case that the relay has a yoke plate 400, an insulating cover and an electromagnetic coil assembly, the support base 4 is arranged on the side of the yoke plate 400 facing the cavity, one end of the pushing rod 3 passes through the yoke plate 400 and is connected with the support base 4, and the other end protrudes from the side of the yoke plate 400 away from the cavity, the electromagnetic coil assembly is fixed on the pushing rod 3, and the electromagnetic coil assembly is located on the side of the yoke plate 400 away from the cavity. Under the condition that the electromagnetic coil assembly is powered, the electromagnetic coil assembly is driven to move towards the yoke plate 400 under the action of the magnetic force, thereby driving the pushing rod 3, the support base 4 and the conductive member 1 to move towards the main static contact, so that the auxiliary active contact 200 and the active contact 300 can be closed with the auxiliary main static contact and the main static contact respectively; under the condition that the electromagnetic coil assembly is powered off, the magnetism of the electromagnetic coil assembly disappears, the pushing rod 3 and the support base 4 reset, thereby driving the auxiliary active contact 200 and the active contact 300 to move away from the auxiliary static contact and the main static contact respectively, so as to realize the disconnection of the auxiliary active contact 200 and the auxiliary static contact, and the disconnection of the active contact 300 and the main static contact. The fixed plate 111 of the conductive member 1 provides support and fixing for the insulating member 2, the two opposite support arms 112 of the conductive member 1 are connected with the support base 4 respectively, which is conducive to keeping the overall structure of the pushing rod, the support base 4, the conductive member 1 and the insulating member 2 stable, avoiding the inclination of the conductive member 1 during movement, and keeping the relay stable.

[0070] It should be noted that in the high-low voltage isolation assembly 100, the first conductive contact is not limited to the auxiliary active contact 200 of the relay, and the first conductive contact can be flexibly changed according to the application of the high-low voltage isolation assembly 100 in specific equipment; the second conductive contact is not limited to the active contact 300 of the relay, and the second conductive contact can be flexibly changed according to the application of the high-low voltage isolation assembly 100 in specific equipment; and the external component is not limited to the pushing assembly 500 of the relay, and the external component can be flexibly changed according to the application of the high-low voltage isolation assembly 100 in specific equipment.

[0071] In some other embodiments, a switch electric appliance is also provided, which comprises an insulating shell and the high-low voltage isolation assembly 100 in any of the above embodiments, the high-low voltage isolation assembly 100 is arranged inside the insulating shell, and the high-low voltage isolation assembly 100 is protected by the insulating shell. The high-low voltage isolation assembly 100 of the present application is connected with the insulating part 2 and the conductive part 1 by inserting the mounting protrusion 12 into the mounting groove 241, and it is not necessary to inject a metal fixing plate into the insulating part 2, and the connection between the insulating part 2 and the conductive part 1 by rivets is avoided, the unnecessary metal parts on the insulating part 2 and the conductive part 1 are reduced, the insulation distance and the creepage distance between the auxiliary movable contact 200 and the main movable contact 300 can be effectively prolonged, the high-low voltage isolation assembly 100 can effectively isolate the high voltage and the low voltage, the risk of the auxiliary movable contact 200 and the main movable contact 300 being electrically conducted and the risk of the arc hitting the conductive part 1 are reduced, and the insulation withstand voltage of the high-low voltage isolation assembly 100 is improved, so that the switch electric appliance has good insulation withstand voltage.

[0072] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0073] The above embodiments only express several implementation manners of the present application, and the description is specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A high-low voltage isolation assembly, characterized in that, include: An insulating component, wherein a first conductive contact is provided on the insulating component, the first conductive contact being used for electrically connecting to a first external circuit, and a mounting groove is provided on the side of the insulating component opposite to the first conductive contact; and A conductive component includes a conductive body and a mounting protrusion disposed on the conductive body. A second conductive contact is disposed in the conductive body for electrically connecting to a second external circuit. The mounting protrusion is mounted in the mounting groove.

2. The high and low voltage isolation assembly according to claim 1, characterized in that, The insulating element includes an insulating body and a mounting block disposed on the insulating body. The first conductive contact is disposed on the side of the insulating body opposite to the conductive element. The mounting block protrudes at least partially from the side of the insulating body opposite to the first conductive contact. The mounting groove is provided on the portion of the mounting block protruding from the insulating body.

3. The high and low voltage isolation assembly according to claim 2, characterized in that, The mounting block has two parts, which are spaced apart. Each mounting block is provided with a mounting groove. The conductive body is located between the two mounting blocks. The conductive body is provided with mounting protrusions on both sides facing the two mounting grooves. The mounting protrusions on both sides of the conductive body correspond one-to-one with the two mounting grooves. The mounting protrusions are inserted into the corresponding mounting grooves.

4. The high and low voltage isolation assembly according to claim 3, characterized in that, A clamping block is provided on the side of the insulating body away from the first conductive contact. The clamping block protrudes at least partially from the side of the insulating body facing the conductive body and is located between the two mounting grooves. The clamping block abuts against one side of the conductive body to restrict the movement of the mounting protrusion in the mounting groove.

5. The high and low voltage isolation assembly according to claim 4, characterized in that, The mounting groove has a mounting opening on one side along its length, the mounting opening being for the mounting protrusion to be inserted into the mounting groove, and the abutment block has an insertion guide surface on the side opposite to the insulating body, the insertion guide surface being close to the mounting opening.

6. The high and low voltage isolation assembly according to claim 5, characterized in that, The insulating component further includes a stop protrusion disposed on the side of the abutment block away from the insulating body, and the conductive body is provided with a stop hole, the stop protrusion being inserted into the stop hole.

7. The high and low voltage isolation assembly according to claim 6, characterized in that, The stop protrusion has a guide surface on the side facing the mounting opening, and the guide surface is used to guide the stop protrusion to slide into the stop hole.

8. The high and low voltage isolation assembly according to claim 2, characterized in that, The conductive body includes a fixed plate and two support arms spaced apart along the length of the mounting groove. One end of each support arm is connected to the fixed plate. The fixed plate is disposed on one side of the insulating body and is located between the two mounting grooves. The second conductive contact is disposed on the side of the fixed plate away from the insulating body. The mounting protrusion is disposed on the side of the fixed plate facing the mounting groove. The end of each support arm away from the fixed plate is used to connect to an external component.

9. The high and low voltage isolation assembly according to claim 3, characterized in that, The insulating element further includes a retaining wall disposed on the insulating body, the retaining wall being located on the side of the insulating body away from the conductive element, and the retaining wall protruding from the side of the first conductive contact away from the conductive element.

10. The high-low voltage isolation assembly according to claim 9, characterized in that, The retaining wall surrounds the insulating body and forms a receiving groove on the insulating body, and the first conductive contact is disposed in the receiving groove.

11. The high and low voltage isolation assembly according to claim 10, characterized in that, The insulating component also includes an insulating cover, which is disposed at the groove end of the receiving groove. The first conductive contact is disposed on the side of the insulating cover facing the receiving groove, and the first conductive contact and the insulating cover are integrally formed.

12. The high-low voltage isolation assembly according to claim 9, characterized in that, The insulating component also includes reinforcing ribs, which are connected to the insulating body, the retaining wall, and the mounting block, respectively.

13. A relay, characterized in that, The device includes an auxiliary stationary contact, an auxiliary moving contact, an active contact, a main stationary contact, a pushing assembly, and a high-low voltage isolation assembly as described in any one of claims 1-12, wherein the auxiliary moving contact is disposed on the insulating member of the high-low voltage isolation assembly; The active contact is disposed in the conductive component of the high and low voltage isolation assembly. The conductive component can move toward or away from the main stationary contact. The pushing component is connected to the conductive component. The movement of the pushing component can drive the conductive component and the insulating component to move, so as to close or open the auxiliary moving contact with the auxiliary stationary contact, and to close or open the active contact with the main stationary contact.

14. The relay according to claim 13, characterized in that, The pushing assembly includes a support base, a push rod, and an elastic element. One end of the support arm of the conductive element, away from the fixed plate, is connected to the support base. The active contact is disposed between the two support arms of the conductive element and is located on the side of the fixed plate away from the insulating body. One end of the push rod is connected to the support base, and the other end protrudes from the side of the support base away from the fixed plate. The elastic element is disposed between the active contact and the support base.

15. A switching device, characterized in that, Includes the high and low voltage isolation assembly as described in any one of claims 1 to 12.

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