Relay

Abstract

The utility model discloses a relay comprising a housing, a containing cavity of the housing is provided with a first wall, and the first wall is provided with a through hole penetrating through the first wall along a first direction; the two conductive terminals are fixed on the shell and are arranged at an interval in the second direction, the two conductive terminals respectively extend into the accommodating cavity from the two through holes, and one ends, extending into the accommodating cavity, of the two conductive terminals form contacts; the movable contact plate is arranged in the accommodating cavity, the movable contact plate can move between a conduction position and a disconnection position, the movable contact plate is provided with two contact parts which are arranged at an interval, in the conduction position, the two contact parts abut against the two contacts respectively, and in the disconnection position, the two contact parts are separated from the two contacts respectively; and the insulating part is arranged in the accommodating cavity, and in the second direction, the insulating part is arranged between the two contacts so as to separate the two contacts. According to the relay provided by the utility model, the relay can maintain good insulation and voltage-resistant performance, so that the operation of the relay is safer and more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, and in particular to a relay. Background Art

[0002] A relay is a switching device for a high-voltage and high-power power supply. During the use of the relay, an arc will be formed at the contact position when the relay switches a large current or high voltage. The arc needs to be eliminated in time to reduce the hazards such as contact ablation and adhesion, and maintain good electrical safety and good service life of the relay. In the related art, the arc can be extinguished by magnetic blowout. A magnetic field is formed at the contact position through an arc extinguishing mechanism, so that the arc is driven by the Lorentz force in the magnetic field to be elongated, thereby increasing the arc resistance and reducing the arc temperature, and thus eliminating the arc.

[0003] When extinguishing the arc by the magnetic blowout method, the metal particles generated by the gasification or melting at the contact position will diffuse in the relay following the arc, and there is a possibility of collision between the arcs generated at different contact positions, which increases the arc intensity, thereby reducing the insulation stability between different contacts, easily causing a short-circuit situation, greatly reducing the insulation withstand voltage performance of the relay, increasing the arc extinguishing time of the arc extinguishing mechanism, and reducing the electrical safety performance of the relay. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a relay, which can provide good insulation separation for different contact positions, thus well avoiding the collision of arcs, well restricting the diffusion of metal particles, so that the relay can maintain good insulation withstand voltage performance, enabling the arc extinguishing mechanism to perform arc extinguishing operations stably and efficiently, and making the electrical safety performance of the relay better.

[0005] The relay according to the utility model includes: a housing having a receiving cavity, the housing having a first wall, and the first wall being formed with a through hole penetrating the first wall in a first direction; two conductive terminals fixed on the housing and arranged at intervals in a second direction, the two conductive terminals respectively extending into the receiving cavity from the two through holes, and one end of each of the two conductive terminals extending into the receiving cavity being formed as a contact; a moving contact plate disposed in the receiving cavity, the moving contact plate being movable between a conducting position and a disconnecting position, the moving contact plate having two contact portions arranged at intervals, in the conducting position, the two contact portions respectively abut against the two contacts, and in the disconnecting position, the two contact portions are respectively separated from the two contacts; and an insulating member disposed in the receiving cavity, in the second direction, the insulating member being disposed between the two contacts to separate the two contacts, the second direction intersecting the first direction.

[0006] According to the relay of the present utility model, by providing an insulating member which is disposed between two contacts to separate the two contacts, it can play a good insulating and blocking role for the arcs and metal particles generated at the two contacts, so that the relay can maintain good insulating voltage withstand performance and make the relay operate more safely and stably.

[0007] In some embodiments of the present utility model, the insulating member is fixedly connected to the moving contact plate.

[0008] In one embodiment of the present utility model, at the conducting position, in the first direction, the distance between the end of the insulating member facing the first wall and the first wall is greater than 0 mm and less than or equal to 0.5 mm.

[0009] In one embodiment of the present utility model, the housing has a second wall and a third wall disposed opposite to each other in the third direction, the insulating member extends along the third direction, the distance between one end of the insulating member in the third direction and the adjacent second wall is a first distance, the distance between the other end of the insulating member in the third direction and the adjacent third wall is a second distance, the value ranges of both the first distance and the second distance are greater than 0 mm and less than or equal to 0.5 mm, and the third direction intersects with the second direction and the first direction pairwise.

[0010] In some embodiments of the present utility model, the insulating member extends along the third direction to be strip-shaped and includes: a fixing portion and an extending portion perpendicular to each other, the fixing portion is connected to the moving contact plate and extends along the second direction, one end of the extending portion is connected to the fixing portion and the other end extends towards the first wall along the first direction.

[0011] In some embodiments of the present utility model, the relay further includes a support frame disposed in the accommodating cavity, and both the insulating member and the moving contact plate are disposed on the support frame.

[0012] In one embodiment of the present utility model, the relay further includes: a push rod and a driving assembly, the push rod extends along the first direction, one end of the push rod is fixedly connected to the support frame, and the driving assembly is used to drive the push rod to move along the first direction so that the moving contact plate moves between the conducting position and the disconnecting position.

[0013] In some examples of the present utility model, the support frame includes: a first plate portion and two second plate portions, the first plate portion is respectively connected to the two second plate portions at both ends in the third direction, the second plate portion extends away from the first plate portion along the first direction, and the two second plate portions cooperate with the first plate portion to define an installation space, wherein the moving touch plate is inserted into the installation space, and the insulating member is fixed on the first plate portion and is located on a side of the first plate portion away from the moving touch plate.

[0014] In an example of the present invention, in a direction from the first wall toward the moving touch plate, a width of at least a portion of the second plate portion in the second direction gradually increases.

[0015] In an example of the present invention, a weight-reducing hole is provided on the second plate portion.

[0016] In one example of the utility model, the relay further includes: a connecting member, which is disposed in the installation space, and the support frame and the push rod are fixedly connected through the connecting member; and an elastic member, which is connected between the support frame and the connecting member, and the elastic member is retractable along the second direction.

[0017] In some specific embodiments of the present invention, the second plate portion is provided with slots, and the two ends of the connecting member in the third direction are respectively inserted into the slots of the two second plate portions.

[0018] In some embodiments of the utility model, the two conductive terminals are respectively formed as a first terminal and a second terminal, and the relay also includes an arc extinguishing mechanism, which is arranged on the outside of the shell and includes: a first permanent magnet and a second permanent magnet, the first permanent magnet and the second permanent magnet are respectively arranged on both sides of the first terminal in a third direction, and the polarity of one end of the first permanent magnet facing the first terminal is opposite to the polarity of one end of the second permanent magnet facing the first terminal; a third permanent magnet and a fourth permanent magnet, the third permanent magnet and the fourth permanent magnet are respectively arranged on both sides of the second terminal in the third direction, and the polarity of one end of the third permanent magnet facing the second terminal is opposite to the polarity of one end of the fourth permanent magnet facing the second terminal.

[0019] In one embodiment of the present invention, in the third direction, the first permanent magnet and the third permanent magnet are located on the same side, and the polarity of one end of the first permanent magnet facing the first terminal is opposite to the polarity of one end of the third permanent magnet facing the second terminal.

[0020] In an embodiment of the present utility model, the arc extinguishing mechanism further includes: a first U-shaped plate, which is U-shaped and open in the first direction, and the first permanent magnet and the second permanent magnet are respectively fixed to both ends of the first U-shaped plate and located inside the first U-shaped plate; a second U-shaped plate, which is U-shaped and open in the first direction, and the third permanent magnet and the fourth permanent magnet are respectively fixed to both ends of the second U-shaped plate and located inside the second U-shaped plate.

[0021] In some embodiments of the present utility model, the housing is a ceramic part.

[0022] In some embodiments of the present utility model, the accommodation cavity is a sealed cavity, and a protective gas is filled in the accommodation cavity.

[0023] The additional aspects and advantages of the present utility model will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a relay according to an embodiment of the present utility model;

[0025] Figure 2 is a schematic diagram of the relay from another angle according to an embodiment of the present utility model;

[0026] Figure 3 is Figure 2 a cross-sectional view taken along line A-A shown in

[0027] Figure 4 is Figure 3 a cross-sectional view taken along line B-B shown in

[0028] Figure 5 is a schematic diagram of an insulating part and a support frame according to an embodiment of the present utility model;

[0029] Figure 6 is a schematic diagram of the insulating part and the support frame from another angle according to an embodiment of the present utility model;

[0030] Figure 7 is Figure 6 a cross-sectional view taken along line C-C shown in

[0031] Figure 8 is Figure 7 a cross-sectional view taken along line D-D shown in

[0032] Figure 9 is a schematic diagram of the insulating part and the support frame from yet another angle according to an embodiment of the present utility model;

[0033] Figure 10 is a schematic diagram of a relay according to the first embodiment of the present utility model;

[0034] Figure 11 is Figure 10 a cross-sectional view taken along line E-E shown in

[0035] Figure 12 is a schematic diagram of a relay according to the second embodiment of the present utility model;

[0036] Figure 13 is Figure 12 a cross-sectional view taken along line F-F shown in

[0037] Reference numerals:

[0038] 10, housing; 101, accommodation cavity; 11, first wall; 12, second wall; 13, third wall;

[0039] 201, contact; 21, first terminal; 22, second terminal;

[0040] 30, moving contact plate;

[0041] 40, insulating member; 41, fixing portion; 42, extending portion;

[0042] 50, support frame; 51, first plate portion; 52, second plate portion; 521, slot; 522, weight-reducing hole; 501, installation space;

[0043] 61, connecting member; 62, push rod; 63, elastic member;

[0044] 70, driving assembly; 71, fixed iron core; 72, moving iron core;

[0045] 80, arc extinguishing mechanism; 81, first U-shaped plate; 82, second U-shaped plate; 83, first permanent magnet; 84, second permanent magnet; 85, third permanent magnet; 86, fourth permanent magnet;

[0046] 100, relay. Detailed description of the embodiments

[0047] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0048] Reference will be made below to Figures 1 - 13 describe the relay 100 according to the embodiments of the present utility model.

[0049] AsFigures 1 - 13 As shown, the relay 100 according to an embodiment of the present invention includes: a housing 10, two conductive terminals, a moving contact plate 30, and an insulating member 40.

[0050] Specifically, the housing 10 has a receiving cavity 101, and the housing 10 has a first wall 11. A through hole penetrating the first wall 11 is formed in the first wall 11 along a first direction (such as Figure 3 the up and down direction shown); the two conductive terminals are fixed on the housing 10 and are arranged at intervals in a second direction (such as Figure 3 the left and right direction shown). The two conductive terminals respectively extend into the receiving cavity 101 from the two through holes, and one end of each of the two conductive terminals extending into the receiving cavity 101 is formed as a contact 201; the moving contact plate 30 is disposed in the receiving cavity 101 and is movable between a conducting position and a disconnecting position. The moving contact plate 30 has two contact portions 201 arranged at intervals. In the conducting position, the two contact portions 201 are respectively in contact with the two contacts 201. In the disconnecting position, the two contact portions 201 are respectively separated from the two contacts 201; the insulating member 40 is disposed in the receiving cavity 101. In the second direction, the insulating member 40 is disposed between the two contacts 201 to separate the two contacts 201, and the second direction intersects the first direction.

[0051] In this embodiment, the housing 10 is provided. The housing 10 is provided with a receiving cavity 101. The contacts 201 of the two conductive terminals are located in the receiving cavity 101 and cooperate with the moving contact plate 30. The structure is simple and the operation is stable. The housing 10 can provide good electrical protection for the conductive terminals and the moving contact plate 30, enabling the relay 100 to operate stably and well.

[0052] When the relay 100 is operating, when the moving contact plate 30 is in the conducting position, the two contact portions 201 of the moving contact plate 30 are respectively in contact with the two contacts 201, so that the moving contact plate 30 is conducted with the two conductive terminals, and thus the circuits of the two conductive terminals are connected. When the moving contact plate 30 is in the disconnecting position, the two contact portions 201 of the moving contact plate 30 are respectively separated from the two contacts 201, so that the circuits of the two conductive terminals are cut off.

[0053] In this embodiment, the two conductive terminals extend into the receiving cavity 101 from the two through holes in the first wall 11. One end extending into the receiving cavity 101 is formed as a contact 201. The moving contact plate 30 has contact portions 201 that cooperate with the two contacts 201. The insulating member 40 is disposed in the receiving cavity 101 and between the two contacts 201. Specifically, the insulating member 40 and the two conductive terminals can be arranged on the same side of the moving contact plate 30. When the contacts 201 are separated from the contact portions 201, the arc generated at the position of the contacts 201 is on the same side of the insulating member 40 on the moving contact plate 30, so that the insulating member 40 can provide good insulation separation for the position where the contacts 201 cooperate with the contact portions 201.

[0054] It can be understood that when the moving contact plate 30 is disconnected from the two conductive terminals, an arc is generated between the contact point 201 part and the contact point 201. The arc has a relatively high temperature, causing some of the materials at the contact point 201 part and the contact point 201 to vaporize. The metal particles generated by vaporization will diffuse in all directions following the movement of the arc or the action of the air flow in the environment. When the arc is eliminated by the magnetic blowout arc extinguishing method, the arc is elongated and cooled under the action of the Lorentz force. The elongated arc may collide with another arc, enhancing the intensity of the arc, thereby increasing the arc extinguishing time. The longer arc extinguishing time exacerbates the arc erosion at the contact point 201 and the contact point 201 part, increasing the probability of adhesion or explosion at the contact point 201 and the contact point 201 part. Moreover, during the arc extinguishing process, the metal particles are more likely to diffuse to the adjacent contact point 201 positions following the elongation of the arc, making it easier to form a conductive path between the two contact point 201 positions, thus greatly reducing the insulation withstand voltage performance of the relay 100.

[0055] In this embodiment, the insulating member 40 is provided. The insulating member 40 is arranged in the accommodation cavity 101 and separates the two contact points 201. Thus, when the relay 100 performs arc extinguishing operation, the insulating member 40 can well play the role of insulating and separating the arcs generated at the two contact points 201 on both sides, thereby stably and reliably avoiding the situation of arc collision, enabling the arc extinguishing operation to be carried out stably and efficiently, thus well reducing the influence of the arc on the insulation withstand voltage performance of the relay 100 during the arc extinguishing process, and can well avoid the situation that the two contact points 201 form a continuous arc resulting in adhesion and explosion of the relay 100 at the contact point 201, making the relay 100 operate more stably and safely.

[0056] In this embodiment, by arranging the insulating member 40 between the two contact points 201, it can well block the metal particles generated at the contact point 201 positions, well limiting the diffusion range of the metal particles and avoiding the formation of a continuous conductive path between the two contact points 201, so that the relay 100 can maintain good insulation withstand voltage performance.

[0057] For the relay 100 according to the embodiment of the present utility model, by arranging the insulating member 40, the insulating member 40 is arranged between the two contact points 201 to separate the two contact points 201, and can well play the role of insulating and blocking the arcs and metal particles generated at the two contact points 201, so that the relay 100 can maintain good insulation withstand voltage performance and make the relay 100 operate more safely and stably.

[0058] In some embodiments of the present utility model, as Figure 3 shown, the insulating member 40 and the moving contact plate 30 can be fixedly connected.

[0059] In this embodiment, the insulating member 40 is fixedly connected to the moving contact plate 30, with a simple structure, convenient and reliable fixation. The insulating member 40 can move along with the movement of the moving contact plate 30, so as to stably and reliably insulate and separate the contact point 201 on one side of the moving contact plate 30 along the first direction, enabling the relay 100 to better maintain good insulation withstand voltage performance during operation and making the operation of the relay 100 more stable and safe.

[0060] In an embodiment of the present utility model, in the conducting position, in the first direction, the distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 can be greater than 0 mm and less than or equal to 0.5 mm.

[0061] In this embodiment, setting the distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 to be greater than 0 mm enables the two contact parts 201 to stably and reliably abut and communicate with the two contact points 201 respectively when the moving contact plate 30 is in the conducting position, avoiding the insulating member 40 from blocking the abutting and connection between the moving contact plate 30 and the conductive terminal after abutting against the first wall 11, so that the moving contact plate 30 and the two conductive terminals can form a stable and reliable conducting circuit, making the operation of the relay 100 more stable.

[0062] In this embodiment, setting the distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 to be less than or equal to 0.5 mm enables the insulating member 40 to form a stable and reliable separating structure between the first wall 11 and the moving contact plate 30 in the first direction when the moving contact plate 30 is in the conducting position, and enables the insulating member 40 to stably and reliably separate the two contact points 201 in the second direction, so that the insulating member 40 can play a good insulating and separating role, enabling the relay 100 to better maintain the insulation withstand voltage performance during arc generation and arc extinguishing operations, and making the operation of the relay 100 more stable and safe. For example, in the conducting position, the distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 in the first direction can be 0.1 mm, 0.15 mm, 0.2 mm, 0.26 mm, 0.4 mm, 0.5 mm, etc.

[0063] Preferably, in the conducting position, in the first direction, the distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 can be greater than or equal to 0.2 mm and less than or equal to 0.5 mm, so that there is enough distance between the end of the insulating member 40 facing the first wall 11 and the first wall 11 to absorb the dimensional deviation caused by machining errors and assembly errors of the insulating member 40 and the first wall 11, enabling the moving contact plate 30 to stably and reliably form a conducting circuit with the two conductive terminals.

[0064] In an embodiment of the present utility model, as Figure 4 shown, the housing 10 can have in the third direction (such asFigure 4 The second wall 12 and the third wall 13 which are arranged relatively in the front-back direction (as shown) are provided. The insulating member 40 extends along the third direction. The distance between one end of the insulating member 40 in the third direction and the adjacent second wall 12 is the first distance, and the distance between the other end of the insulating member 40 in the third direction and the adjacent third wall 13 is the second distance. The value ranges of both the first distance and the second distance can be greater than 0 mm and less than or equal to 0.5 mm. The third direction intersects with the second direction and the first direction pairwise.

[0065] It can be understood that the accommodating cavity 101 is a three-dimensional space, and the arc generated between the contact 201 and the contact 201 part is in a divergent form within the accommodating cavity 101. In this embodiment, the insulating member 40 is arranged to extend along the third direction, which can play a stable insulating and blocking role for the two contacts 201 in the third direction. Thus, the insulating member 40 can play a stable and reliable insulating and blocking effect on the two contacts 201 within the space of the accommodating cavity 101, and thereby the relay 100 can maintain stable insulating voltage withstand performance.

[0066] It can be understood that the insulating member 40 is arranged on the moving contact plate 30. The moving contact plate 30 moves between the conducting position and the disconnecting position, and the insulating member 40 moves along with the movement of the moving contact plate 30. In this embodiment, the distance between one end of the insulating member 40 in the third direction and the adjacent second wall 12 is set as the first distance, and the distance between the other end of the insulating member 40 in the third direction and the adjacent third wall 13 is set as the second distance. Both the first distance and the second distance are greater than 0 mm, which can avoid the contact between the insulating member 40 and the first wall 11 and the second wall 12, enabling the insulating member 40 to move smoothly and stably along with the moving contact plate 30. Both the first distance and the second distance are less than or equal to 0.5 mm, which can enable the insulating member 40 to play a good insulating and separating role for the contacts 201 on both sides in the third direction.

[0067] For example, the first distance can be 0.1 mm, 0.2 mm, 0.25 mm, 0.4 mm, 0.5 mm, etc., and the second distance can be 0.1 mm, 0.2 mm, 0.25 mm, 0.4 mm, 0.5 mm, etc. Preferably, both the first distance and the second distance can be greater than or equal to 0.2 mm and less than or equal to 0.5 mm. In this way, the insulating member 40 can have sufficient distances from the second wall 12 and the third wall 13 at both ends in the third direction, so as to absorb the dimensional deviations caused by the processing errors and assembly errors of the insulating member 40 and the first wall 11 and the second wall 12, etc., enabling the insulating member 40 to have a stable gap with the first wall 11 and the second wall 12 for smooth movement. Preferably, the first distance and the second distance can be the same, which is convenient for the arrangement of the insulating member 40 within the accommodation and the fixation on the moving contact plate 30.

[0068] In this embodiment, the third direction intersects with the second direction and the first direction pairwise, aiming to illustrate that the third direction, the second direction, and the first direction are not parallel to each other. The first direction and the second direction can form an acute angle, an obtuse angle, or a right angle. The first direction and the third direction can form an acute angle, an obtuse angle, or a right angle. The second direction and the third direction can form an acute angle, an obtuse angle, or a right angle.

[0069] In some embodiments of the present utility model, as Figure 3 and Figure 5 shown in the figure, the insulating member 40 extends in a long strip shape along the third direction and may include: a fixing portion 41 and an extending portion 42 that are perpendicular to each other. The fixing portion 41 is connected to the moving contact plate 30 and extends along the second direction. One end of the extending portion 42 is connected to the fixing portion 41 and the other end extends towards the first wall 11 along the first direction.

[0070] In this embodiment, the insulating member 40 is arranged to extend in a long strip shape along the third direction, with a simple structure. The insulating member 40 includes a fixing portion 41 and an extending portion 42 that are perpendicular to each other. The fixing portion 41 extends along the second direction, and the extending portion 42 extends along the first direction. Specifically, the angle between the third direction and the first direction is a right angle. In this embodiment, the fixing portion 41 is connected to the moving contact plate 30 and extends along the second direction, which can form a relatively large connection and cooperation surface with the moving contact plate 30, so that the insulating member 40 can be more stably fixed to the moving contact plate 30, and can form a relatively large insulating surface in the second direction, thereby playing a better role in blocking and aggregating the diffused metal particles, further reducing the deposition of metal particles at other positions in the accommodation, and thus better reducing the conductive path generated by the deposition of metal particles, and further enabling the relay 100 to better maintain the insulation withstand voltage performance.

[0071] In this embodiment, one end of the extending portion 42 is connected to the fixing portion 41 and the other end extends towards the first wall 11 along the first direction, which can play a good insulation and separation effect on the contacts 201 on both sides of the insulating member 40 in the first direction, with a simple structure and convenient separation. The cooperation between the extending portion 42 and the fixing portion 41 can play a good insulation and separation role, and make the overall structure of the insulating member 40 more stable and reliable, with better structural strength, so that the insulating member 40 has better stability and reliability during use.

[0072] In an embodiment of the present utility model, the thickness of the fixing portion 41 can be in the range of 1.2 mm - 1.5 mm. This can enable the fixing portion 41 to meet the processing requirements and have good structural strength, so that the insulating member 40 can be stably fixedly connected to the moving contact plate 30. For example, the thickness of the fixing portion 41 can be 1.2 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.5 mm, etc.

[0073] In an embodiment of the present utility model, the thickness of the extension portion 42 may range from 1.2 mm to 1.5 mm. This can enable the extension portion 42 to meet the processing requirements and have good structural strength, so that the insulating member 40 can stably and reliably insulate and separate the two contact points 201 in the first direction. For example, the thickness of the extension portion 42 may be 1.2 mm, 1.3 mm, 1.35 mm, 1.4 mm, 1.5 mm, etc. Preferably, the thickness of the fixing portion 41 may be the same as that of the extension portion 42, which can facilitate the processing and manufacturing of the insulating member 40, making the overall structure of the insulating member 40 more stable and having better structural strength.

[0074] In some embodiments of the present utility model, as Figure 3 shown, the relay 100 may further include a support frame 50, the support frame 50 is disposed in the accommodation cavity 101, and both the insulating member 40 and the moving contact plate 30 are disposed on the support frame 50.

[0075] In this embodiment, the support frame 50 is provided, and both the insulating member 40 and the moving contact plate 30 are disposed on the support frame 50. The structure is simple, the assembly and fixation are convenient, making the overall structure of the moving contact plate 30, the insulating member 40 and the support frame 50 more compact. The support frame 50 can play a role in strengthening the structure of the moving contact plate 30 and the insulating member 40, making the moving contact plate 30 and the insulating member 40 more stable when moving between the conducting position and the disconnecting position.

[0076] In an embodiment of the present utility model, as Figure 3 shown, the relay 100 may further include: a push rod 62 and a driving assembly 70. The push rod 62 extends along the first direction, one end of the push rod 62 is fixedly connected to the support frame 50, and the driving assembly 70 is used to drive the push rod 62 to move along the first direction so that the moving contact plate 30 moves between the conducting position and the disconnecting position.

[0077] In this embodiment, the push rod 62 and the driving assembly 70 are provided. The driving assembly 70 cooperates with the push rod 62 to drive the moving contact plate 30 to move between the conducting position and the disconnecting position. The structure is simple and the actuation is reliable, which can well meet the use requirements of the relay 100 for switching the circuit on and off.

[0078] In some examples of the present utility model, as Figure 3 shown, the driving assembly 70 may include: a fixed iron core 71 and an actuating iron core 72. The fixed iron core 71 is fixedly connected to the housing 10. The fixed iron core 71 and the actuating iron core 72 are arranged at intervals along the first direction. The actuating iron core 72 is disposed on the side of the fixed iron core 71 away from the moving contact plate 30, and the push rod 62 passes through the fixed iron core 71 and is connected to the actuating iron core 72.

[0079] In this embodiment, a fixed iron core 71 and an active iron core are provided. When the relay 100 performs the circuit switching operation, current can be respectively passed through the fixed iron core 71 and the active iron core 72, so that the fixed iron core 71 and the active iron core 72 generate a magnetic force of attraction or repulsion according to the direction of the current, so that the active iron core approaches or moves away from the fixed iron core 71 along the first direction, and then the active iron core drives the push rod 62 to drive the movable contact plate 30 to move between the conducting position and the disconnecting position. In this embodiment, the fixed iron core 71 and the active iron core 72 are provided to cooperate in driving the movement of the movable contact plate 30, which has a simple structure, convenient driving, accurate and efficient actuation, and can well meet the use requirements of the relay 100.

[0080] In some examples of the present invention, Figure 4 and Figure 7 As shown, the support frame 50 may include: a first plate portion 51 and two second plate portions 52, the first plate portion 51 is respectively connected to the two second plate portions 52 at both ends in the third direction, the second plate portion 52 extends away from the first plate portion 51 along the first direction, and the two second plate portions 52 cooperate with the first plate portion 51 to define an installation space 501, wherein the moving touch plate 30 is inserted into the installation space 501, and the insulating member 40 is fixed on the first plate portion 51 and is located on a side of the first plate portion 51 away from the moving touch plate 30.

[0081] In this embodiment, the support frame 50 includes a first plate portion 51 and two second plate portions 52. The two second plate portions 52 extend along the first direction and are respectively connected to the two ends of the first plate portion 51 in the third direction. The two second plate portions 52 and the first plate portion 51 can cooperate to form a U-shaped structure open along the first direction. The first plate portion 51 is fixedly connected to the insulating member 40. The moving touch plate 30 is inserted into the installation space 501 formed by the support frame 50. The structure is simple and the layout is compact.

[0082] The insulating member 40 is disposed on a side of the first plate portion 51 away from the movable contact plate 30 and is fixedly connected to the first plate portion 51, so that the insulating member 40 can play a good insulating role on the side of the first plate portion 51 facing the conductive terminal of the movable contact plate 30, so that the insulating member 40 can better play a role of insulating and separating the two contact points 201. Exemplarily, the insulating member 40 can be bent and cover the first plate portion 51 and the part of the second plate portion 52 connected to the first plate portion 51 on one side of the movable contact plate 30, so that the insulating member 40 can stably and reliably perform insulating and separating.

[0083] In one example of the present invention, Figure 3 and Figure 5 As shown, in the direction from the first wall 11 toward the movable touch plate 30 , the width of at least a portion of the second plate portion 52 in the second direction may gradually increase.

[0084] In this embodiment, at least a part of the second plate portion 52 is set to have a width that gradually increases in the second direction from the first wall 11 towards the movable contact plate 30. To a certain extent, this can improve the overall structural strength of the two second plate portions 52 and the first plate portion 51, enabling the size of the first plate portion 51 in the second direction to better match the size of the insulating member 40, and making the overall structural stability of the support frame 50 better in the first direction. This allows the support frame 50 to more stably and reliably support and fix the insulating member 40 and the movable contact plate 30, making the movement of the movable contact plate 30 and the insulating member 40 along the first direction between the conducting position and the disconnecting position more stable.

[0085] In an example of the present utility model, as Figure 5 shown, a weight-reducing hole 522 may be provided on the second plate portion 52.

[0086] This can reduce the overall weight of the support frame 50, enabling the push rod 62 and the driving assembly 70 to better drive the support frame 50, as well as the movable contact plate 30 and the insulating member 40, to move along the first direction, and using less material for the support frame 50 and having a lower material cost.

[0087] In an example of the present utility model, the insulating member 40, the support frame 50, and the movable contact plate 30 may be integrally injection-molded. This can make the overall structure of the insulating member 40, the movable contact plate 30, and the support frame 50 more compact, with a more reliable connection and fixation. As a result, the overall movement of the movable contact plate 30, the insulating member 40, and the support frame 50 is more stable and reliable, enabling the movable contact plate 30 to more stably conduct or disconnect with the contacts 201 of the two conductive terminals, thus making the operation of the relay 100 more stable.

[0088] In an example of the present utility model, as Figure 3 and Figure 4 shown, the relay 100 may further include: a connecting member 61 and an elastic member 63. The connecting member 61 is disposed in the installation space 501, and the support frame 50 and the push rod 62 are fixedly connected through the connecting member 61; the elastic member 63 is connected between the support frame 50 and the connecting member 61, and the elastic member 63 is telescopable along the second direction.

[0089] In this embodiment, the connecting member 61 and the elastic member 63 are provided. The connecting member 61 is fixed to the support frame 50, and the movable contact plate 30 is connected to the connecting member 61 through the elastic member 63. When the movable contact plate 30 moves from the disconnecting position to the conducting position, the elastic member 63 can play a good buffering role in the contact between the contact portion 201 and the contact 201, enabling the contact portion 201 to smoothly abut and connect with the contact 201, thereby making the operation of the relay 100 more stable.

[0090] In some specific embodiments of the present utility model, in the conducting position, the elastic member 63 can be in a compressed state. This can enable the moving contact plate 30 to stably and reliably abut against the two conductive terminals under the action of the elastic member 63, so that the two conductive terminals can form a stable conducting circuit, and thus the relay 100 can operate more stably and reliably.

[0091] In some specific embodiments of the present utility model, referring to Figure 4 and Figure 5 as shown, the second plate portion 52 can be provided with a slot 521, and both ends of the connecting member 61 in the third direction are respectively inserted into the slots 521 of the two second plate portions 52.

[0092] In this embodiment, the slot 521 is provided on the second plate portion 52, and both ends of the connecting member 61 are inserted into the slot 521. The structure is simple, the fixing is convenient and reliable, and it is convenient for the assembly and fixing of the connecting member 61 and the support frame 50.

[0093] In some specific examples of the present utility model, as Figure 4 shown, both ends of the connecting member 61 in the third direction can be provided with insertion plates, and the connecting member 61 and the second plate portion 52 can be assembled and fixed by inserting the insertion plates into the slot 521. In this embodiment, the insertion plates are provided at both ends of the connecting member 61, and the structure is simple, which is convenient for the assembly and fixing of the connecting member 61 and the support frame 50.

[0094] In some specific examples within the present utility model, as Figure 4 shown, on one side of the connecting member 61 facing the elastic member 63 in the first direction, a fixing groove is provided, and one end of the elastic member 63 is arranged in the limiting groove. This can make the connection and fixation between the elastic member 63 and the connecting member 61 more stable and reliable. The limiting groove can play a certain limiting and guiding role in the telescopic deformation of the elastic member 63 in the first direction, making the operation of the elastic member 63 more stable.

[0095] In some embodiments of the present utility model, referring to Figure 2 and Figure 10 as shown, the two conductive terminals are respectively formed as a first terminal 21 and a second terminal 22. The relay 100 can further include an arc extinguishing mechanism 80. The arc extinguishing mechanism 80 is arranged outside the housing 10 and includes: a first permanent magnet 83, a second permanent magnet 84, a third permanent magnet 85, and a fourth permanent magnet 86. The first permanent magnet 83 and the second permanent magnet 84 are respectively arranged on both sides of the first terminal 21 in the third direction, and the polarity of the end of the first permanent magnet 83 facing the first terminal 21 is opposite to the polarity of the end of the second permanent magnet 84 facing the first terminal 21; the third permanent magnet 85 and the fourth permanent magnet 86 are respectively arranged on both sides of the second terminal 22 in the third direction, and the polarity of the end of the third permanent magnet 85 facing the second terminal 22 is opposite to the polarity of the end of the fourth permanent magnet 86 facing the second terminal 22.

[0096] In this embodiment, an arc extinguishing mechanism 80 is provided in the relay 100. Specifically, the two conductive terminals are respectively formed as a first terminal 21 and a second terminal 22. The arc extinguishing mechanism 80 includes a first permanent magnet 83 and a second permanent magnet 84. The first permanent magnet 83 and the second permanent magnet 84 are respectively arranged on both sides of the first terminal 21 in the third direction. The polarities of the ends of the first permanent magnet 83 and the second permanent magnet 84 facing the first terminal 21 in the third direction are opposite, so that a magnetic field along the third direction is formed between the first permanent magnet 83 and the second permanent magnet 84. The first terminal 21 is in the magnetic field formed between the first permanent magnet 83 and the second permanent magnet 84. When the contact 201 of the first terminal 21 is disconnected from the contact 201 part of the moving contact plate 30, the generated arc is stretched along the second direction under the action of the Lorentz force in the magnetic field, so that the resistance of the arc increases and the temperature drops, thereby realizing the elimination of the arc.

[0097] Similar to the arc extinguishing at the first terminal 21, a magnetic field along the third direction is formed between the third permanent magnet 85 and the fourth permanent magnet 86. When the contact 201 of the second terminal 22 is disconnected from the contact 201 part of the moving contact plate 30, the arc is stretched along the second direction under the action of the Lorentz force in the magnetic field, so that the resistance of the arc increases and the temperature decreases, and then the elimination of the arc is realized.

[0098] In this embodiment, the arc extinguishing mechanism 80 is provided to eliminate the arc by the method of magnetic blowout arc extinguishing. The structure is simple, and the arc can be eliminated stably, efficiently and reliably, so that the relay 100 can have good electrical safety performance during operation.

[0099] In this embodiment, the arc extinguishing mechanism 80 is arranged outside the housing 10, which can reduce the occupation of the accommodation cavity 101, make the overall structure layout of the relay 100 more compact, and can avoid the influence of the high-temperature arc generated in the accommodation cavity 101 on the arc extinguishing mechanism 80, so that the arc extinguishing mechanism 80 can form a stable magnetic field at the contact 201 position, so that the arc extinguishing mechanism 80 can operate stably and reliably.

[0100] In an embodiment of the present invention, with reference to Figure 10 and Figure 13 As shown, in the third direction, the first permanent magnet 83 and the third permanent magnet 85 can be located on the same side, and the polarity of the end of the first permanent magnet 83 facing the first terminal 21 is opposite to the polarity of the end of the third permanent magnet 85 facing the second terminal 22.

[0101] It can be understood that the direction in which the arc is stretched along the second direction under the action of the Lorentz force in the magnetic field is related to the magnetic field direction and the current direction. When the magnetic field directions are the same, since the current flow directions at the first terminal 21 and the second terminal 22 are opposite, the arcs generated at the contact 201 position of the first terminal 21 and the arcs generated at the contact 201 position of the second terminal 22 are subjected to the Lorentz forces in opposite directions. The arcs generated at the two contact 201 positions are stretched towards each other along the first direction, thereby greatly increasing the probability of collision between the two arcs, deteriorating the arc extinguishing effect of the arc extinguishing mechanism 80, and thus having a greater impact on the arc extinguishing operation of the arc extinguishing mechanism 80 by the current direction.

[0102] In this embodiment, the polarity of the end of the first permanent magnet facing the first terminal 21 is set to be opposite to the polarity of the end of the third permanent magnet 85 facing the second terminal 22, so that the arcs generated at the contact 201 position of the first terminal 21 and the arcs generated at the contact 201 position of the second terminal 22 can be stretched along the second direction under the action of the Lorentz forces in the same direction, thereby well reducing the influence of the current direction on the arc extinguishing effect, and enabling the arc extinguishing mechanism 80 to achieve a stable and reliable arc extinguishing effect on the arcs generated at the two contacts 201.

[0103] In an embodiment of the present utility model, as Figure 2 shown, the arc extinguishing mechanism 80 may further include: a first U-shaped plate 81 and a second U-shaped plate 82. The first U-shaped plate 81 is U-shaped with an opening in the first direction, and the first permanent magnet 83 and the second permanent magnet 84 are respectively fixed to both ends of the first U-shaped plate 81 and are located inside the first U-shaped plate 81; the second U-shaped plate 82 is U-shaped with an opening in the first direction, and the third permanent magnet 85 and the fourth permanent magnet 86 are respectively fixed to both ends of the second U-shaped plate 82 and are located inside the second U-shaped plate 82.

[0104] In this embodiment, the first U-shaped plate 81 and the second U-shaped plate 82 are provided, which has a simple structure, is convenient for fixing the first permanent magnet 83, the second permanent magnet 84, the third permanent magnet 85 and the fourth permanent magnet 86, and can make the magnetic circuit of the magnetic field formed by the arc extinguishing mechanism 80 at the positions of the first terminal 21 and the second terminal 22 more stable, reduce the magnetic resistance, thereby enhancing the magnetic force of the overall structure, and enabling the arc extinguishing mechanism 80 to better play the role of magnetic blow arc extinguishing.

[0105] In some embodiments of the present utility model, the housing 10 may be a ceramic part. This can form a good insulation environment for the accommodation cavity 101, so that the first terminal 21, the second terminal 22 and the moving contact plate 30 can have a good insulation operating environment in the accommodation cavity 101, thereby making the relay 100 more stable and reliable during long-term operation.

[0106] In some embodiments of the present utility model, the accommodation cavity 101 can be a sealed cavity, and a protective gas can be filled in the accommodation cavity 101.

[0107] In this embodiment, setting the accommodation cavity 101 as a sealed cavity can provide a more stable operating environment for the on-off operation of the conductive terminal and the moving contact plate 30. A protector is arranged in the accommodation cavity 101, which can further improve the electrical insulation performance in the accommodation cavity 101, enabling the relay 100 to have better insulation withstanding voltage performance and electrical safety performance, so that the relay 100 can operate more stably and reliably.

[0108] Next, reference will be made to Figures 1 - 13 describe the relay 100 according to a specific embodiment of the present utility model.

[0109] As Figures 1 - 9 shown, the relay 100 includes a housing 10, an arc extinguishing mechanism 80, a conductive terminal, an insulating member 40, a moving contact plate 30, a support frame 50, an elastic member 63, a connecting member 61, an insertion plate, a push rod 62, and a driving assembly 70.

[0110] The housing 10 is a ceramic member and has a sealed accommodation cavity 101. A protective gas is filled in the accommodation cavity 101. The protective gas is nitrogen, which can play a good role in electrical insulation protection, improve the insulation performance in the accommodation cavity 101, and can also play a good cooling role on the arc, thereby improving the arc extinguishing effect of the arc extinguishing mechanism 80 on the arc. Nitrogen can also prevent the oxidation of the copper structure in the accommodation cavity 101 and can reduce copper oxide, so that the relay 100 operates more stably and safely. The accommodation cavity 101 has a first wall 11 in the first direction. The first wall 11 is provided with a through hole. The conductive terminal includes two, namely a first terminal 21 and a second terminal 22. The first terminal 21 and the second terminal 22 are both fixed on the housing 10 and extend along the first direction. The first terminal 21 and the second terminal 22 partially pass through the through hole and extend into the accommodation cavity 101. The extending ends of the first terminal 21 and the second terminal 22 respectively form contact points 201. The first terminal 21 and the second terminal 22 are arranged at intervals in the second direction.

[0111] The moving contact plate 30 extends along the second direction and is located in the accommodation cavity 101. The two ends of the moving contact plate 30 in the second direction respectively form contact point portions 201. The contact point portions 201 and the contact points 201 are arranged opposite to each other in the first direction. The moving contact plate 30 is located on the side of the conductive terminal having the contact points 201 in the first direction.

[0112] The support frame 50 is a U-shaped frame and forms an opening away from the conductive terminal in the first direction. The support frame 50 includes a first plate portion 51 and two second plate portions 52. The first plate portion 51 extends along the second direction and the plane where the direction is located. The two second plate portions 52 are respectively arranged at both ends of the first plate portion 51 in the third direction and are connected to the first plate portion 51. The second plate portion 52 extends along the first direction. The two second plate portions 52 cooperate with the first plate portion 51 to define an installation space 501. The moving touch plate 30 is penetrated in the installation space 501 along the second direction and is arranged close to the first plate portion 51. The insulating member 40 is arranged on a side of the first plate portion 51 away from the installation space 501. The insulating member 40 and the first conductive terminal and the second conductive terminal are arranged on the same side of the moving touch plate 30 in the first direction. The insulating member 40, the support frame 50 and the moving touch plate 30 can be integrally formed by injection molding. The insulating member 40 can be a high-temperature resistant member to withstand the high temperature of the electric arc and the gasified metal particles. The support frame 50 can be a stainless steel member.

[0113] The connecting member 61 and the elastic member 63 are both arranged in the installation space 501 and are located on the side of the movable touch plate 30 away from the first plate portion 51. The connecting member 61 is plug-in connected to the two second plate portions 52 through a plug-in board. The elastic member 63 is a spring and is connected to the movable touch plate 30 and the connecting member 61 to support and fix the movable touch plate 30.

[0114] The push rod 62 extends along the first direction, one end of the push rod 62 is fixedly connected to the connecting member 61, the drive assembly 70 includes a fixed iron core 71 and an actuating iron core 72 arranged at intervals along the first direction, the fixed iron core 71 is fixedly connected to the shell 10, and the other end of the push rod 62 passes through the fixed iron core 71 and is fixedly connected to the actuating iron core 72.

[0115] The insulating member 40 is arranged between the first terminal 21 and the second terminal 22 in the second direction, and the insulating member 40, the support frame 50, the push rod 62, and the driving assembly 70 are all arranged along the first direction. The insulating member 40 includes a fixing portion 41 and an extending portion 42, the fixing portion 41 is connected to the extending portion 42 and is arranged vertically, the fixing portion 41 and the extending portion 42 cooperate to form a T-shaped structure, and the insulating member 40 extends along the third direction.

[0116] The arc extinguishing assembly is arranged outside the housing 10 and includes a first U-shaped plate 81 and a second U-shaped plate 82 symmetrically arranged in a first direction. The openings of the first U-shaped plate 81 and the second U-shaped plate 82 are arranged opposite to each other in a second direction. First permanent magnets 83 and 84 are respectively fixed at two ends of the first U-shaped plate 81, and third permanent magnets 85 and 86 are respectively fixed at two ends of the second U-shaped plate 82. The midline of the first permanent magnet 83 in the first direction and the midline of the second permanent magnet 84 in the first direction are aligned with the axis of the contact 201 of the first terminal 21 in a third direction. The midline of the third permanent magnet 85 in the first direction and the midline of the fourth permanent magnet 86 in the first direction are aligned with the axis of the contact 201 of the second terminal 22 in the third direction, so that the two contacts 201 are located at positions where the magnetic density in the magnetic field is relatively concentrated.

[0117] The first permanent magnet 83 and the third permanent magnet 85 are located on one side of the housing 10 in the third direction, and the second permanent magnet 84 and the fourth permanent magnet 86 are located on the other side of the housing 10 in the third direction.

[0118] As Figure 10 and Figure 11 shown, in this embodiment, the end of the first permanent magnet 83 facing the first terminal 21 is an S pole, the end of the second permanent magnet 84 facing the first terminal 21 is an N pole, and the ends of the third permanent magnet 85 and the fourth permanent magnet 86 facing the second terminal 22 are an N pole and an S pole respectively. Figure 10 The arrows in Figure 11 indicate the magnetic field directions at the first terminal 21 and the second terminal 22. In

[0119] As Figure 12 and Figure 13As shown, in this embodiment, the magnetic field directions of the magnetic fields at the first terminal 21 and the second terminal 22 remain unchanged, while the direction of the current flow changes. The current flows from the second terminal 22 to the first terminal 21. When the arc extinguishing mechanism 80 performs arc extinguishing operations, the arcs are all stretched and moved in the second direction in the direction from the second terminal 22 towards the first terminal 21. Thus, it can be seen that when the relay 100 is operating, after the current direction changes, the arcs generated at the first terminal 21 and the second terminal 22 can always maintain the same stretching and moving direction, thereby well reducing the possibility of arc collision and enabling the arc extinguishing mechanism 80 to perform arc extinguishing operations stably and reliably.

[0120] In this embodiment, by providing the insulating member 40, which is arranged between the two contacts 201 to separate the two contacts 201, it can play a good insulating and blocking role for the arcs and metal particles generated at the two contacts 201, so that the relay 100 can maintain good insulation and withstand voltage performance, making the operation of the relay 100 safer and more stable.

[0121] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0122] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0123] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0124] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0125] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A relay, characterized in that: include: A housing (10), the housing (10) having a receiving cavity (101), the housing (10) having a first wall (11), the first wall (11) being formed with a through hole penetrating the first wall (11) along a first direction; Two conductive terminals, the two conductive terminals are fixed on the housing (10) and arranged at intervals in the second direction, the two conductive terminals extend into the accommodating cavity (101) from the two through holes respectively, and one end of the two conductive terminals extending into the accommodating cavity (101) is formed into a contact point (201); A movable touch plate (30), the movable touch plate (30) being arranged in the accommodating cavity (101), the movable touch plate (30) being movable between an on position and an off position, the movable touch plate (30) comprising two contact point (201) parts arranged at intervals, in the on position, the two contact point (201) parts respectively abut against the two contact points (201), and in the off position, the two contact point (201) parts respectively separate from the two contact points (201); An insulating member (40), the insulating member (40) being disposed in the accommodating cavity (101); in the second direction, the insulating member (40) is disposed between the two contacts (201) to separate the two contacts (201); the second direction intersects with the first direction.

2. The relay according to claim 1, characterized in that: The insulating member (40) is fixedly connected to the moving touch plate (30).

3. The relay according to claim 2, characterized in that: At the conducting position, in the first direction, the distance between one end of the insulating member (40) facing the first wall (11) and the first wall (11) is greater than 0 mm and less than or equal to 0.5 mm.

4. The relay according to claim 2, characterized in that: The shell (10) has a second wall (12) and a third wall (13) arranged opposite to each other in a third direction, the insulating member (40) extends along the third direction, the spacing between the insulating member (40) at one end of the third direction and the adjacent second wall (12) is a first spacing, the spacing between the insulating member (40) at the other end of the third direction and the adjacent third wall (13) is a second spacing, the value ranges of the first spacing and the second spacing are both greater than 0 mm and less than or equal to 0.5 mm, and the third direction intersects with the second direction and the first direction in pairs.

5. The relay according to any one of claims 1 to 4, characterized in that: The insulating member (40) extends in a strip shape along the third direction and comprises: a fixing portion (41) and an extending portion (42) perpendicular to each other, the fixing portion (41) being connected to the movable touch plate (30) and extending along the second direction, and one end of the extending portion (42) being connected to the fixing portion (41) and the other end extending along the first direction toward the first wall.

6. The relay according to claim 1, characterized in that: It also comprises a support frame (50), wherein the support frame (50) is arranged in the accommodating cavity (101), and the insulating member (40) and the movable touch plate (30) are both arranged on the support frame (50).

7. The relay according to claim 6, characterized in that: Also includes: A push rod (62) and a drive assembly (70), wherein the push rod (62) extends along a first direction, one end of the push rod (62) is fixedly connected to the support frame (50), and the drive assembly (70) is used to drive the push rod (62) to move along the first direction so as to move the movable touch plate (30) between the on position and the off position.

8. The relay according to claim 7, characterized in that: The support frame (50) comprises: a first plate portion (51) and two second plate portions (52); the first plate portion (51) is connected to the two second plate portions (52) at two ends in the third direction respectively; the second plate portions (52) extend away from the first plate portion (51) along the first direction; the two second plate portions (52) cooperate with the first plate portion (51) to define an installation space (501); The movable touch plate (30) is inserted into the installation space (501), and the insulating member (40) is fixed on the first plate portion (51) and is located on a side of the first plate portion (51) facing away from the movable touch plate (30).

9. The relay according to claim 8, characterized in that: In the direction from the first wall (11) toward the moving touch plate (30), the width of at least a part of the second plate portion in the second direction gradually increases.

10. The relay according to claim 8, characterized in that: The second plate portion (52) is provided with a weight-reducing hole (522).

11. The relay according to claim 8, characterized in that: Also includes: A connecting member (61), wherein the connecting member (61) is disposed in the installation space (501), and the support frame (50) and the push rod (62) are fixedly connected via the connecting member (61); An elastic member (63), wherein the elastic member (63) is connected between the support frame (50) and the connecting member (61), and the elastic member (63) is retractable along the second direction.

12. The relay according to claim 11, characterized in that: The second plate portion (52) is provided with a slot (521), and the connecting member (61) is respectively inserted into the slots (521) of the two second plate portions (52) at both ends in the third direction.

13. The relay according to claim 1, characterized in that: The two conductive terminals are respectively formed as a first terminal (21) and a second terminal (22), and the relay further comprises an arc extinguishing mechanism (80), wherein the arc extinguishing mechanism (80) is arranged outside the housing (10) and comprises: a first permanent magnet (83) and a second permanent magnet (84), wherein the first permanent magnet (83) and the second permanent magnet (84) are respectively arranged on both sides of the first terminal (21) in a third direction, and the polarity of one end of the first permanent magnet (83) facing the first terminal (21) is opposite to the polarity of one end of the second permanent magnet (84) facing the first terminal (21); A third permanent magnet (85) and a fourth permanent magnet (86), wherein the third permanent magnet (85) and the fourth permanent magnet (86) are respectively arranged on both sides of the second terminal (22) in the third direction, and the polarity of one end of the third permanent magnet (85) facing the second terminal (22) is opposite to the polarity of one end of the fourth permanent magnet (86) facing the second terminal (22).

14. The relay according to claim 13, characterized in that: In the third direction, the first permanent magnet (83) and the third permanent magnet (85) are located on the same side, and the polarity of one end of the first permanent magnet (83) facing the first terminal (21) is opposite to the polarity of one end of the third permanent magnet (85) facing the second terminal (22).

15. The relay according to claim 13, characterized in that: The arc extinguishing mechanism (80) further comprises: A first U-shaped plate (81), the first U-shaped plate (81) being in a U-shape opened in the first direction, the first permanent magnet (83) and the second permanent magnet (84) being respectively fixed to two ends of the first U-shaped plate (81) and being located on the inner side of the first U-shaped plate (81); A second U-shaped plate (82), wherein the second U-shaped plate (82) is in a U-shape that is open in the first direction, and the third permanent magnet (85) and the fourth permanent magnet (86) are respectively fixed to two ends of the second U-shaped plate (82) and are located on the inner side of the second U-shaped plate (82).

16. The relay according to claim 1, characterized in that The housing (10) is a ceramic component.

17. The relay according to claim 1, characterized in that: The accommodating cavity (101) is a closed cavity, and the accommodating cavity (101) is filled with protective gas.

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