Contact system, contact system and switching device

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a contact system, a contact system comprising the contact system and a switching electric appliance comprising the contact system. In the contact system, the rotating shaft directions of a first contact mechanism and a second contact mechanism are both d3, and the first contact mechanism and the second contact mechanism are arranged in a synchronous rotation mode and are synchronously connected or disconnected with a fixedly-arranged auxiliary contact. The auxiliary contact comprises a first contact part and a second contact part; the first contact part and the second contact part are respectively in plugging cooperation with the first contact mechanism and the second contact mechanism. The contact system, the contact system and the switching device are good in breaking performance.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a contact system, a contact system comprising the contact system, and a switch electrical appliance comprising the contact system. Background Art

[0002] As a major switching device in the power distribution system, the isolating switch is mainly used for "isolating power supply, switching operations, and connecting and disconnecting low-current circuits"; the isolating switch usually includes an operating mechanism and a contact system, and the operating mechanism drives the contact system to close and disconnect.

[0003] With the continuous development of power distribution technology, the performance requirements of power distribution systems for disconnectors have gradually increased, prompting disconnector products to continue to develop in the direction of small size and high performance. In particular, with the rapid development of the photovoltaic and energy storage industries in recent years, the rated voltage has been increased from 2-pole DC1000V to DC1500V, and will develop to DC2000V and above in the future. Under high voltage, there are also higher requirements for the disconnecting performance of disconnector assemblies, so the disconnector contact system needs to be upgraded. The disconnecting performance of the disconnector is closely related to the opening distance of the contact system. In the existing technology, the disconnecting performance of the disconnector is often improved by increasing the opening distance of the contact system - mainly by increasing the opening angle of the moving contact to 90° or higher. As the opening angle of the moving contact increases, the volume of the contact system will also increase, which is not conducive to the miniaturization of the disconnector. Utility Model Content

[0004] The purpose of the present utility model is to overcome at least one defect of the prior art and provide a contact system, a contact system including the contact system and a switching device including the contact system. The structure of the contact system improves the breaking capacity.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A contact system comprising a first contact mechanism and a second contact mechanism, each of which is rotatable and has a rotation axis in a direction d3, and a fixed auxiliary contact; the first and second contact mechanisms are rotatable synchronously and close or open synchronously with the auxiliary contact;

[0007] The auxiliary contact comprises a first contact portion cooperating with the first contact mechanism and a second contact portion cooperating with the second contact mechanism; the first contact portion and the second contact portion are plug-fitted with the first contact mechanism and the second contact mechanism respectively.

[0008] Furthermore, during the rotation process, the first contact mechanism and the second contact mechanism rotate in opposite directions.

[0009] Furthermore, on a projection of the contact system perpendicular to the direction d3, the rotation axis of the first contact mechanism, the rotation axis of the second contact mechanism and the auxiliary contact are respectively arranged at three vertices of a first triangle.

[0010] Furthermore, the first triangle is an isosceles triangle, the rotation axis of the first contact mechanism and the rotation axis of the second contact mechanism are respectively arranged at the vertices of the two base angles of the first triangle, and the auxiliary contact is arranged at the vertex of the top angle of the first triangle;

[0011] The first contact mechanism and the second contact mechanism are arranged side by side along direction d1;

[0012] The plane where the rotation axes of the first contact mechanism and the second contact mechanism are located is the first plane. The auxiliary contact is located on one side of the first plane in direction d2. Directions d1, d2 and d3 are perpendicular to each other.

[0013] Furthermore, the first contact mechanism includes a first rotating shaft that is rotatably arranged and a first contact assembly with one end arranged on the first rotating shaft and the other end being used to cooperate with the auxiliary contact; the second contact mechanism includes a second rotating shaft that is rotatably arranged and a second contact assembly with one end arranged on the second rotating shaft and the other end being used to cooperate with the auxiliary contact;

[0014] On a projection of the contact system perpendicular to the direction d3 , the rotation axis of the first rotating shaft, the rotation axis of the second rotating shaft, and the auxiliary contact are respectively arranged at three vertices of a first triangle.

[0015] Furthermore, the first contact mechanism includes a first rotating shaft that is rotatable and a first contact assembly that is arranged on the first rotating shaft, and the first rotating shaft includes a first rotating shaft gear; the second contact mechanism includes a second rotating shaft that is rotatable and a second contact assembly that is arranged on a third rotating shaft, and the second rotating shaft includes a second rotating shaft gear; the first rotating shaft gear and the second rotating shaft gear are in transmission cooperation.

[0016] Furthermore, the first rotating shaft gear and the second rotating shaft gear are meshed.

[0017] Furthermore, the contact system further includes a rack, which is located between the first rotating shaft gear and the second rotating shaft gear and is meshed with the first rotating shaft gear and the second rotating shaft gear respectively.

[0018] Furthermore, the first rotating shaft also includes a first rotating shaft supporting part, a first rotating shaft gear is connected to one end of the first rotating shaft supporting part and the first rotating shaft gear and the first rotating shaft supporting part are coaxially and synchronously arranged to rotate, and one end of the first contact assembly is arranged on the first rotating shaft supporting part; the second rotating shaft also includes a second rotating shaft supporting part, a second rotating shaft gear is connected to one end of the second rotating shaft supporting part and the second rotating shaft gear and the second rotating shaft supporting part are coaxially and synchronously arranged to rotate, and one end of the second contact assembly is arranged on the second rotating shaft supporting part.

[0019] Furthermore, the first contact mechanism and the second contact mechanism have the same structure.

[0020] Furthermore, the auxiliary contact further includes an auxiliary contact trunk, and the auxiliary contact is fixedly arranged through the auxiliary contact trunk. The first contact portion and the second contact portion are respectively arranged on the auxiliary contact trunk and are located on both sides of the auxiliary contact trunk.

[0021] Furthermore, the auxiliary contact is an integrated structure.

[0022] A contact system comprises the contact system.

[0023] Furthermore, the contact system also includes a first arc extinguishing assembly cooperating with the first contact mechanism and the auxiliary contact, and a second arc extinguishing assembly cooperating with the second contact mechanism and the auxiliary contact. The first arc extinguishing assembly and the second arc extinguishing assembly are respectively arranged on both sides of the auxiliary contact in direction d1, and direction d1 and direction d3 are perpendicular to each other.

[0024] Furthermore, the first arc extinguishing assembly includes a first arc extinguishing shell, the first contact mechanism includes a first contact assembly, one end of the first contact assembly that cooperates with the auxiliary contact is a first contact end, and the first contact end moves in the first arc extinguishing shell to close and open with the auxiliary contact;

[0025] The second arc extinguishing assembly includes a second arc extinguishing shell, the second contact mechanism includes a second contact assembly, one end of the second contact assembly that cooperates with the auxiliary contact is a second contact end, and the second contact end moves in the second arc extinguishing shell to close and open with the auxiliary contact;

[0026] The first arc-extinguishing shell and the second arc-extinguishing shell are both gas-generating structures.

[0027] Furthermore, the first arc-extinguishing assembly further includes a first permanent magnet, and two groups of first permanent magnets are respectively arranged on both sides of the first arc-extinguishing shell in the direction d3, and the two groups of first permanent magnets are arranged with the same poles facing each other;

[0028] The second arc-extinguishing assembly includes a second permanent magnet, and two groups of second permanent magnets are respectively arranged on both sides of the second arc-extinguishing shell in the direction d3, and the two groups of second permanent magnets are arranged with the same poles facing each other;

[0029] The plane where the rotation axis of the first contact mechanism and the rotation axis of the second contact mechanism are located is the first plane, the auxiliary contact, the first arc extinguishing assembly and the second arc extinguishing assembly are all located on the same side of the first plane in direction d2, and directions d1, d2 and d3 are perpendicular to each other.

[0030] Furthermore, the contact system also includes a first terminal block, a second terminal block, a first soft wire and a second soft wire. The first terminal block is electrically connected to the first contact mechanism through the first soft wire, and the second terminal block is electrically connected to the second contact mechanism through the second soft wire; the first terminal block, the first contact mechanism, the second contact mechanism and the second terminal block are arranged side by side in sequence along direction d1.

[0031] A switching electrical appliance comprises the contact system.

[0032] The contact system of the present invention has a first contact mechanism, a second contact mechanism and an auxiliary contact that cooperate with each other to form a double break point, thereby improving the breaking capacity of the contact system; moreover, the first contact mechanism and the second contact mechanism are respectively rotatably arranged and the auxiliary contact is fixedly arranged, thereby simplifying the overall structure of the contact system and improving the reliability of the contact system operation; the first contact mechanism is plugged into and matched with the first contact portion, and the second contact mechanism is plugged into and matched with the second contact portion, thereby ensuring the reliability and stability of the closure and conduction of the first contact mechanism, the second contact mechanism and the auxiliary contact, and the closing and opening processes of the first contact mechanism, the second contact mechanism and the auxiliary contact can achieve self-cleaning of the contacts.

[0033] In addition, the layout of the first contact mechanism, the second contact mechanism and the auxiliary contact improves the structural compactness of the contact system, reduces the required installation space, and is conducive to the miniaturization of the switching electrical appliance when applied to the switching electrical appliance.

[0034] In addition, the first contact mechanism and the second contact mechanism have the same structure, which is beneficial to reducing the types of parts and improving assembly efficiency.

[0035] The contact system of the utility model includes the contact system and has good breaking capacity.

[0036] The switch electrical appliance of the utility model includes the contact system and has good breaking capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a switch unit according to a first embodiment of the present invention;

[0038] Figure 2 This is a schematic structural diagram of the contact system of the first embodiment of the present utility model;

[0039] Figure 3This is a structural diagram of the first moving contact mechanism of the utility model;

[0040] Figure 4 This is an exploded view of the movable contact assembly of the utility model;

[0041] Figure 5 It is a schematic structural diagram of the support member of the utility model, wherein Figure (51) is a schematic structural diagram of the support member at one viewing angle, and Figure (52) is a schematic structural diagram of the support member at another viewing angle;

[0042] Figure 6 It is a schematic structural diagram of the movable contact of the utility model, wherein Figure (61) is a schematic structural diagram of the movable contact at one viewing angle, and Figure (62) is a schematic structural diagram of the movable contact at another viewing angle;

[0043] Figure 7 This is a schematic structural diagram of the first rotating shaft of the utility model;

[0044] Figure 8 This is a schematic diagram of the structure of the auxiliary contact of the utility model;

[0045] Figure 9 It is a structural diagram of the unit shell of the utility model;

[0046] Figure 10 This is a schematic structural diagram of the first arc extinguishing assembly 5 of the present invention;

[0047] Figure 11 This is a schematic structural diagram of a switch unit according to a second embodiment of the present invention;

[0048] Figure 12 This is a schematic structural diagram of a switch unit according to a third embodiment of the present invention;

[0049] Figure 13 It is a schematic diagram of the arrangement of the first permanent magnet and the second permanent magnet of the utility model, wherein Figure (131) shows that one end of the two groups of first permanent magnets (or second permanent magnets) close to the first contact mechanism (or second contact mechanism) is inclined toward the middle of the two, and Figure (132) shows that one end of the two groups of first permanent magnets (or second permanent magnets) away from the first contact mechanism (or second contact mechanism) is inclined toward the middle of the two.

[0050] Description of Reference Numerals

[0051] Housing base 1, auxiliary contact limiting rib 1-1, first terminal block mounting base 1-21, second terminal block mounting base 1-22, first shaft rear mounting hole 1-31, second shaft rear mounting hole 1-32, first left side wall 1-41, first right side wall 1-42, first upper side wall 1-43, first lower side wall 1-44, first bottom wall 1-45, auxiliary contact positioning rib 1-5;

[0052] Contact system 100;

[0053] First contact mechanism 2; first rotating shaft 2-1, first rotating shaft gear 2-11, first rotating shaft bearing portion 2-12, moving contact mounting hole 2-121; first contact assembly 2-2, moving contact 2-21, moving contact plate 2-211, moving contact positioning groove 2-212, moving contact protrusion 2-213, support member 2-22, support member main board 2-221, support member side plate 2-222, support member limiting column 2-223, support member positioning protrusion 2-224, spring sheet 2-23, spring sheet main board 2-231, spring sheet connecting plate 2-232, spring sheet support foot 2-233, bracket slot 2-2331;

[0054] Second contact mechanism 3, second rotating shaft 3-1, second contact assembly 3-2;

[0055] Auxiliary contact 4, auxiliary contact trunk 4-1, auxiliary contact positioning groove 4-10, first contact portion 4-2, second contact portion 4-3;

[0056] A first arc-extinguishing assembly 5, a first arc-extinguishing shell 5-1, an arc-extinguishing shell side plate 5-11, an arc-extinguishing shell bottom plate 5-12, and a first permanent magnet 5-2;

[0057] A second arc extinguishing assembly 6;

[0058] First terminal block 7;

[0059] A second terminal block 8;

[0060] First soft wire 9;

[0061] Second flexible wire 10;

[0062] Rack 11. DETAILED DESCRIPTION

[0063] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the switch electrical apparatus of the present invention. The switch electrical apparatus of the present invention is not limited to the description of the following embodiments.

[0064] like Figure 1 、 11 As shown in Figure 12, the switching apparatus of the present invention is specifically a disconnector. Furthermore, the disconnector includes an operating mechanism and at least one switch unit. The switch unit includes a unit housing and a contact system disposed within the unit housing. The contact system includes a contact system 100. The operating mechanism is used to drive the contact system 100 to close and open. Furthermore, the contact system includes an arc extinguishing device disposed within the unit housing and cooperating with the contact system 100.

[0065] Specifically, when the number of the switch units is 1, the switch is a single-phase disconnector. When the number of the switch units is ≥ 2, the contact systems 100 of the switch units are closed and opened synchronously. For example, the first contact mechanisms 2 of the switch units are transmission-connected to each other, and / or the second contact mechanisms 3 of the switch units are transmission-connected to each other, and / or the racks 11 of the switch units are transmission-connected to each other. The first contact mechanisms 2, the second contact mechanisms 3, and the rack 11 will be described below.

[0066] like Figure 1-10 FIG. 1 shows a first embodiment of the switch unit.

[0067] like Figure 1 As shown, the length direction, width direction and height direction of the switch unit are direction d1, direction d2 and direction d3 respectively, and direction d1, direction d2 and direction d3 are perpendicular to each other.

[0068] like Figure 1-2 As shown, the switch unit of this embodiment has a contact system 100 comprising a first contact mechanism 2 and a second contact mechanism 3 which are respectively rotatably arranged and whose rotation axis directions are both in the direction d3, and a fixed auxiliary contact 4; the first contact mechanism 2 and the second contact mechanism 3 are synchronously rotated and closed or disconnected synchronously with the auxiliary contact 4, that is, the first contact mechanism 2 and the second contact mechanism 3 are simultaneously closed with the auxiliary contact 4 by synchronous rotation, and the first contact mechanism 2 and the second contact mechanism 3 are simultaneously disconnected from the auxiliary contact 4 by synchronous rotation; the auxiliary contact 4 comprises a first contact portion 4-2 which cooperates with the first contact mechanism 2 and a second contact portion 4-3 which cooperates with the second contact mechanism 3; the first contact portion 4-2 and the second contact portion 4-3 are plugged into and matched with the first contact mechanism 2 and the second contact mechanism 3, respectively.

[0069] The contact system 100, its first contact mechanism 2, second contact mechanism 3 and auxiliary contact 4 cooperate to form a double breakpoint, thereby improving the breaking capacity of the contact system 100; moreover, the first contact mechanism 2 and the second contact mechanism 3 are respectively rotatably arranged and the auxiliary contact 4 is fixedly arranged, which simplifies the overall structure of the contact system 100 and improves the reliability of the operation of the contact system 100; the first contact mechanism 2 is plugged into and matched with the first contact part 4-2, and the second contact mechanism 3 is plugged into and matched with the second contact part 4-3, thereby ensuring the reliability and stability of the closure and conduction of the first contact mechanism 2, the second contact mechanism 3 and the auxiliary contact 4, and the closing and opening processes of the first contact mechanism 2, the second contact mechanism 3 and the auxiliary contact 4 can achieve self-cleaning of the contacts.

[0070] Further, such as Figure 1-2As shown, the first contact mechanism 2 and the second contact mechanism 3 rotate in opposite directions during the rotation process; that is, whether the first moving contact mechanism 2 and the second moving contact mechanism 3 are closed with the auxiliary contact 4 through synchronous rotation, or the first moving contact mechanism 2 and the second moving contact mechanism 3 are disconnected from the auxiliary contact 4 through synchronous rotation, the rotation directions of the first moving contact mechanism 2 and the second moving contact mechanism 3 are always opposite.

[0071] Specifically, such as Figure 1 As shown, when the switch unit is switched to the closed state, the first contact mechanism 2 rotates counterclockwise and the second contact mechanism 3 rotates clockwise, so that the first contact mechanism 2 and the second contact mechanism 3 are simultaneously closed with the auxiliary contact 4; when the switch unit is switched to the disconnected state, the first contact mechanism 2 rotates clockwise and the second contact mechanism 3 rotates counterclockwise, so that the first contact mechanism 2 and the second contact mechanism 3 are simultaneously disconnected from the auxiliary contact 4.

[0072] Further, such as Figure 1-2 The figure shows a layout of the first contact mechanism 2, the second contact mechanism 3, and the auxiliary contact 4: on the projection of the contact system 100 perpendicular to direction d3, the rotation axis of the first contact mechanism 2, the rotation axis of the second contact mechanism 3, and the auxiliary contact 4 are respectively arranged at the three vertices of the first triangle. Furthermore, the first triangle is an isosceles triangle, the rotation axis of the first contact mechanism 2 and the rotation axis of the second contact mechanism 3 are respectively arranged at the vertices of the three base angles of the first triangle, and the auxiliary contact 4 is arranged at the vertex of the apex angle of the first triangle; the first contact mechanism 2 and the second contact mechanism 3 are arranged side by side along direction d1, and the plane in which the rotation axes of the first contact mechanism 2 and the second contact mechanism 3 lie is a first plane, which is parallel to directions d1 and d3 and perpendicular to direction d2, and the auxiliary contact 4 is located on one side of the first plane in direction d2.

[0073] The layout of the first contact mechanism 2, the second contact mechanism 3 and the auxiliary contact 4 improves the structural compactness of the contact system 100, reduces the required installation space, and is conducive to the miniaturization of the switch electrical appliance.

[0074] As another embodiment of the layout of the first contact mechanism 2 , the second contact mechanism 3 and the auxiliary contact 4 , the first contact mechanism 2 , the second contact mechanism 3 and the auxiliary contact 4 are sequentially arranged side by side and spaced apart along the direction d1 .

[0075] Furthermore, the first contact mechanism 2 and the second contact mechanism 3 have a rotational travel angle of 45°-90°. In this embodiment, the rotational travel angle of the first contact mechanism 2 and the second contact mechanism 3 is 90°, thereby ensuring sufficient clearance between the first contact mechanism 2 and the second contact mechanism 3 and the auxiliary contact 4, thereby improving the breaking performance of the contact system 100. The rotational travel angle refers to the position at which the first contact mechanism 2 / the second contact mechanism 3 switches from the open position to the closed position (the position at which the first contact mechanism 2 / the second contact mechanism 3 and the auxiliary contact 4 are closed).

[0076] Further, such as Figure 1-2 As shown, in the switch unit of this embodiment, the first contact mechanism 2 and the second contact mechanism 3 have the same structure, which is conducive to reducing the number of parts and improving assembly efficiency. Of course, the first contact mechanism 2 and the second contact mechanism 3 can also adopt different structures.

[0077] like Figure 1-2 As shown, the first contact mechanism 2 includes a first rotating shaft 2-1 that is rotatable and a first contact assembly 2-2, one end of which is arranged on the first rotating shaft 2-1 and the other end of which is used to cooperate with the auxiliary contact 4; the second contact mechanism 3 includes a second rotating shaft 3-1 that is rotatable and a second contact assembly 3-2, one end of which is arranged on the second rotating shaft 3-1 and the other end of which is used to cooperate with the auxiliary contact 4, that is, one end of the first contact assembly 2-2 and the second contact assembly 3-2 are respectively arranged on the first rotating shaft 2-1 and the second rotating shaft 3-1, and the other end respectively cooperates with the auxiliary contact 4 to close and disconnect with the auxiliary contact 4; on the projection of the contact system 100 perpendicular to the direction d3, the rotation axis of the first rotating shaft 2-1, the rotation axis of the second rotating shaft 3-1 and the auxiliary contact 4 are respectively arranged at the three vertices of the first triangle.

[0078] Further, such as Figure 1-2 As shown, the first rotating shaft 2-1 includes a first rotating shaft gear 2-11; the second rotating shaft 3-1 includes a second rotating shaft gear; the first rotating shaft gear 2-11 and the second rotating shaft gear cooperate with each other to achieve synchronous rotation of the first rotating shaft 2-1 and the second rotating shaft 3-1.

[0079] Specifically, such as Figure 1-2As shown, the first rotating shaft gear 2-11 and the second rotating shaft gear are engaged. In actual operation, when the first rotating shaft 2-1 (or the second rotating shaft 3-1) is driven by an external force to rotate, the first rotating shaft 2-1 (or the second rotating shaft 3-1) drives the second rotating shaft 3-1 (or the first rotating shaft 2-1) to rotate synchronously through the first rotating shaft gear 2-11 and the second rotating shaft gear. That is, when the first rotating shaft 2-1 is driven by an external force to rotate, the first rotating shaft gear 2-11 and the second rotating shaft gear drive the second rotating shaft 3-1 to rotate synchronously; or, when the second rotating shaft 3-1 is driven by an external force to rotate, the second rotating shaft 3-1 drives the first rotating shaft 2-1 to rotate synchronously through the first rotating shaft gear 2-11 and the second rotating shaft gear. Furthermore, the first rotating shaft gear 2-11 and the second rotating shaft gear are both full-tooth cylindrical gears or sector gears.

[0080] Further, such as Figure 1-3 As shown in Figures 7 and 8, the first rotating shaft 2-1 also includes a first rotating shaft supporting part 2-12, a first rotating shaft gear 2-11 is connected to one end of the first rotating shaft supporting part 2-12, and the first rotating shaft gear 2-11 and the first rotating shaft supporting part 2-12 are coaxially and synchronously arranged, and one end of the first contact assembly 2-2 is arranged on the first rotating shaft supporting part 2-12; the second rotating shaft 3-1 also includes a second rotating shaft supporting part, a second rotating shaft gear is connected to one end of the second rotating shaft supporting part, and the second rotating shaft gear and the second rotating shaft supporting part are coaxially and synchronously arranged, and one end of the second contact assembly 3-2 is arranged on the second rotating shaft supporting part. Furthermore, one end of the first contact assembly 2-2 is inserted into the first rotating shaft supporting part 2-12 along the radial direction of the first rotating shaft 2-1; one end of the second contact assembly 3-2 is inserted into the second rotating shaft supporting part along the radial direction of the second rotating shaft 3-2. Furthermore, the first rotating shaft bearing part 2-12 and the first rotating shaft gear 2-11 are an integrated or split structure; the second rotating shaft bearing part and the second rotating shaft gear are an integrated or split structure.

[0081] Specifically, such as Figure 7 As shown, in this embodiment, the first shaft bearing part 2-12 and the first shaft 2-11 are an integrated structure; the second shaft bearing part and the second shaft gear are an integrated structure; the first shaft 2-1 and the second shaft 3-1 have the same structure; taking the first shaft 2-1 as an example, the first shaft bearing part 2-12 includes a moving contact mounting hole 2-121, which extends radially along the first shaft 2-1 and is used for inserting one end of the first contact assembly 2-2 therein.

[0082] Further, such as Figure 1-3As shown in Figures 9 and 9, the unit shell includes a first bottom wall 1-45 and a second bottom wall (not shown in the figure) arranged opposite to each other, and the first bottom wall 1-45 and the second bottom wall are arranged opposite to each other along the direction d3; the two ends of the first rotating shaft 2-1 are respectively rotatably arranged on the first bottom wall 1-45 and the second bottom wall; the two ends of the second rotating shaft 3-1 are respectively rotatably arranged on the first bottom wall 1-45 and the second bottom wall.

[0083] Specifically, such as Figure 9 As shown, the first bottom wall 1-45 is provided with a first rotating shaft rear mounting hole 1-31 and a second rotating shaft rear mounting hole 1-32; the second bottom wall is provided with a first rotating shaft front mounting hole (not shown in the figure) and a second rotating shaft front mounting hole (not shown in the figure); the first rotating shaft 2-1 is rotatably mounted in the first rotating shaft rear mounting hole 1-31 and the first rotating shaft front mounting hole at both ends, and the second rotating shaft 3-1 is rotatably mounted in the second rotating shaft rear mounting hole 1-32 and the second rotating shaft front mounting hole at both ends. Furthermore, the first rotating shaft rear mounting hole 1-31, the second rotating shaft rear mounting hole 1-32, the first rotating shaft front mounting hole, and the second rotating shaft front mounting hole are through holes or blind holes.

[0084] like Figure 1-3 , 8 , the closing method of the first contact mechanism 2 , the second contact mechanism 3 and the auxiliary contact 4 will be described below.

[0085] like Figure 1-2 As shown, the first contact mechanism 2 is plugged into and matched with the first contact portion 4-2, that is, when the first contact mechanism 2 and the auxiliary contact 4 are closed, the first contact assembly 2-2 of the first contact mechanism 2 is plugged into and matched with the first contact portion 4-2; the second contact mechanism 3 is plugged into and matched with the second contact portion 4-3, that is, when the second contact mechanism 3 and the auxiliary contact 4 are closed, the second contact assembly 3-2 of the second contact mechanism 3 is plugged into and matched with the second contact portion 4-3.

[0086] like Figure 1-4 As shown, this is an implementation method of plugging and matching the first contact mechanism 2 with the first contact portion 4-2 and the second contact mechanism 3 with the second contact portion 4-3: the first contact assembly 2-2 and the second contact assembly 3-2 have the same structure, and both include two moving contacts 2-21 arranged opposite to each other; Figure 1-2As shown in Figures 8 and 9, the first contact portion 4-2 and the second contact portion 4-3 have the same structure, both being contact blades. When the first contact mechanism 2 and the auxiliary contact 4 are closed, the first contact portion 4-2 is inserted between the two moving contacts 2-21 of the first contact assembly 2-2 and is clamped by the two moving contacts 2-21. When the second contact mechanism 3 and the auxiliary contact 4 are closed, the second contact portion 4-3 is inserted between the two moving contacts 2-21 of the second contact assembly 3-2 and is clamped by the two moving contacts 2-21. Furthermore, the side edges of the first contact portion 4-2 and the second contact portion 4-3 are both provided with chamfered structures to facilitate their respective insertion between the corresponding two moving contacts 2-21. Furthermore, the first contact portion 4-2 and the second contact portion 4-3 are symmetrical structures to ensure synchronization of the contact processes between the first contact assembly 2-2 and the second contact assembly 3-2 and the first contact portion 4-2 and the second contact portion 4-3, respectively, and consistency of contact conduction.

[0087] As another implementation method of the plug-in cooperation between the first contact mechanism 2 and the first contact part 4-2 and the plug-in cooperation between the second contact mechanism 3 and the second contact part 4-3: the first contact mechanism 2 includes a first contact knife, the first contact part 4-2 includes two groups of contact plates arranged opposite to each other, the first contact knife is inserted into the two groups of contact plates and is clamped by the two groups of contact plates; the second contact mechanism 3 includes a second contact knife, the second contact part 4-3 includes two groups of contact plates arranged opposite to each other, the second contact knife is inserted into the two groups of contact plates and is clamped by the two groups of contact plates.

[0088] As another embodiment of the closing method of the first contact mechanism 2, the second contact mechanism 3 and the auxiliary contact 4, the first contact mechanism 2 and the first contact portion 4-2 are closed by snapping; the second contact mechanism 3 and the second contact portion 4-3 are closed by snapping.

[0089] like Figure 3-6 As shown, the first contact assembly 2 - 2 and the second contact assembly 3 - 2 will be described below by taking the first contact assembly 2 - 2 as an example.

[0090] like Figure 3-4As shown, the first contact assembly 2-2 includes a moving contact 2-21, a support member 2-22 and a spring sheet 2-23. The two moving contacts 2-21 are arranged opposite to each other, the two support members 2-22 are arranged opposite to each other and are respectively arranged on both sides of the two moving contacts 2-21, and the two spring sheets 2-23 are arranged opposite to each other and are respectively arranged on both sides of the two support members 2-22. Each spring sheet 2-23 is located between the corresponding support member 2-22 and the side wall of the corresponding moving contact mounting hole 2-121. The two spring sheets 2-23 respectively apply force to the two moving contacts 2-21 so that the two moving contacts 2-21 have a tendency to move toward each other, and when the two moving contacts 2-21 are plugged into the first contact portion 4-2, the two moving contacts 2-21 clamp the first contact portion 4-2. Furthermore, the spring sheet 2-23 and the corresponding support member 2-22 are limited and cooperated to prevent the two from moving relative to each other in a plane perpendicular to the direction d3; the support member 2-22 and the corresponding moving contact 2-21 are limited and cooperated to prevent the two from moving relative to each other in a plane perpendicular to the direction d3.

[0091] Specifically, such as Figure 4 As shown, the spring sheet 2-23 includes a spring sheet main board 2-231, a spring sheet connecting plate 2-232 and a spring sheet support leg 2-233. The two ends of the spring sheet main board 2-231 are respectively bent and connected to one end of the two spring sheet connecting plates 2-232, and the other ends of the two spring sheet connecting plates 2-232 are respectively bent and connected to one end of the spring sheet bracket 2-233; the two spring sheet connecting plates 2-232 are bent to the same side of the plane where the spring sheet main board 2-231 is located, and the two spring sheet support legs 2-233 are arranged parallel to the spring sheet main board 2-231. On the projection of the spring sheet 2-23 parallel to the plane where the spring sheet main board 2-231 is located, the two spring sheet support legs 2-233 are located on both sides of the spring sheet main board 2-231 and are respectively spaced apart from the spring sheet main board 2-231. The two spring sheet support legs 2-233 are respectively limited and matched with the corresponding support members 2-22. Furthermore, the spring sheet main board 2-231 is arranged relative to the corresponding support member 2-22, and the spring sheet support leg 2-233 is provided with a support leg slot 2-2331, and the support leg slot 2-2331 is clamped on the support member limiting column 2-223 of the support member 2-22 to achieve limiting cooperation between the spring sheet 2-3 and the corresponding support member 2-22.

[0092] Specifically, such as Figure 4-5As shown, the support member 2-22 includes a support member main board 2-221, a support member side plate 2-222, a support member limiting column 2-223 and a support member positioning protrusion 2-224. A support member limiting column 2-223 is provided at each end of one side of the support member main board 2-221, and a support member positioning protrusion 2-224 is provided on the other side of the support member main board 2-221. A pair of side plates of the support member main board 2-221 are respectively bent and connected to the two support member side plates 2-22; the support member main board 2-221 and the corresponding moving contact 2-21 are relatively stacked together, the support member positioning protrusion 2-224 is matched with the moving contact positioning groove 2-212 of the corresponding moving contact 2-21, and the moving contact 2-21 is located between the two support member side plates 2-222 and is respectively limited by the two to achieve the limited cooperation of the support member 2-22 and the corresponding moving contact 2-21.

[0093] As other embodiments of the support member 2-22, the number of the support member positioning protrusions 2-224 may be ≥2, and / or the support member 2-22 is not provided with a support member side plate 2-222.

[0094] Specifically, such as Figure 4 and 6 As shown, the moving contact 2-21 includes a moving contact plate 2-111, a moving contact positioning groove 2-12 and a moving contact protrusion 2-213, and the moving contact positioning groove 2-12 and the moving contact protrusion 2-213 are respectively arranged on both sides of the moving contact plate 2-111; in the first contact assembly 2-2, the moving contact protrusions 2-213 of the two moving contacts 2-21 are relatively pressed against each other to form an insertion gap between the two moving contact plates 2-111 for the first contact portion 4-2 to be inserted between the two moving contact plates 2-111.

[0095] As other embodiments of the first contact assembly 2-2, one of the moving contacts 2-21 is provided with a moving contact protrusion 2-213, and the other is not provided with the moving contact protrusion 2-213; or, both of the moving contacts 2-21 are not provided with the moving contact protrusion 2-213, but a partition is provided between the two moving contacts 2-21, and the partition is clamped between the two moving contacts 2-21 to form an insertion gap between the two moving contacts 2-21; or, the first contact assembly 2-2 is not provided with a support member 2-22, but only includes a moving contact 2-21 and a spring sheet 2-23.

[0096] Further, such as Figure 1-2 As shown, the auxiliary contact 4 is limitedly matched with the unit housing to achieve a fixed arrangement of the auxiliary contact 4.

[0097] like Figure 8 FIG. 1 shows an implementation of the auxiliary contact 4 .

[0098] The auxiliary contact 4 includes an auxiliary contact trunk 4-1, a first contact portion 4-2 and a second contact portion 4-3. The first contact portion 4-2 and the second contact portion 4-3 are both connected to the auxiliary contact trunk 4-1 and are respectively located on both sides of the auxiliary contact trunk 4-1; the auxiliary contact 4 is fixedly arranged by the auxiliary contact trunk 4-1 (for example, the auxiliary contact trunk 4-1 is limitedly matched with the unit shell of the switch unit to achieve the fixed arrangement of the auxiliary contact 4, as described later). Furthermore, the first contact portion 4-2 and the second contact portion 4-3 are both fan-shaped structures, and one straight edge of each is respectively connected to the auxiliary contact trunk 4-1, and the arc-shaped side edges of the first contact portion 4-2 and the second contact portion 4-3 are provided with a chamfered structure. Furthermore, the auxiliary contact trunk 4-1, the first contact portion 4-2 and the second contact portion 4-3 are an integrated structure, that is, the auxiliary contact 4 is an integrated structure. The auxiliary contact 4 has a simple and firm structure and is easy to produce. Furthermore, the auxiliary contact trunk 4-1 includes two sets of auxiliary contact positioning grooves 4-10 respectively provided on both sides thereof, the auxiliary contact positioning grooves 4-10 being plugged into and matched with the auxiliary contact limiting ribs 1-1 of the unit housing. Furthermore, the auxiliary contact positioning grooves 4-10 extend along the direction d2.

[0099] Specifically, such as Figure 1 、 9 As shown, the first bottom wall 1-45 and the second bottom wall are both provided with auxiliary contact limiting ribs 1-1. The two sets of auxiliary contact limiting ribs 1-1 are respectively plugged into the two sets of auxiliary contact positioning grooves 4-10. Furthermore, the unit housing also includes auxiliary contact positioning ribs 1-5. Two sets of auxiliary contact positioning ribs 1-5 are provided on both sides of each auxiliary contact limiting rib 1-1. The auxiliary contact limiting ribs 1-1 and the auxiliary contact positioning ribs 1-5 are arranged side by side along direction d1. The auxiliary contact positioning ribs 1-5 of the first bottom wall 1-45 and the auxiliary contact positioning ribs 1-5 of the second bottom wall are limited and engaged with both sides of the auxiliary contact trunk 4-1 along direction d3. The cross-section of the auxiliary contact trunk 4-1 is an H-shaped structure. Of course, the unit housing also includes a limiting structure that cooperates with the auxiliary contact trunk 4-1 to prevent the auxiliary contact 4-1 from moving along direction d2.

[0100] like Figure 1As shown, the end of the first contact assembly 2-2 that cooperates with the auxiliary contact 4 is the first contact end; the end of the second contact assembly 3-2 that cooperates with the auxiliary contact 4 is the second contact end; the contact system also includes an arc extinguishing device, the arc extinguishing device includes a first arc extinguishing assembly 5 that cooperates with the first contact mechanism 2 and the auxiliary contact 4, and a second arc extinguishing assembly 6 that cooperates with the second contact mechanism 3 and the auxiliary contact 4; the first arc extinguishing assembly 5 includes a first arc extinguishing shell 5-1, and the first contact end moves in the first arc extinguishing shell 5-1 to close and disconnect with the auxiliary contact 4; the second arc extinguishing assembly 6 includes a second arc extinguishing shell, and the second contact end moves in the second arc extinguishing shell to close and disconnect with the auxiliary contact 4; the first arc extinguishing shell 5-1 and the second arc extinguishing shell are both gas-generating structures (for example, made of nylon, PA46, PA66 and other materials). The first arc extinguishing assembly 5 is used to extinguish the arc of the contact pair composed of the first contact end and the auxiliary contact 4, and the second arc extinguishing assembly 6 is used to extinguish the arc of the contact pair composed of the second contact end and the auxiliary contact 4. Moreover, the first arc extinguishing shell 5-1 and the second arc extinguishing shell are both gas-generating structures. The first arc extinguishing shell 5-1 and the second arc extinguishing shell generate gas in a high-temperature environment, achieving a gas blowing effect to help extinguish the arc, thereby improving the arc extinguishing efficiency.

[0101] Furthermore, the first arc-extinguishing assembly 5 further includes a first permanent magnet 5-2, two groups of first permanent magnets 5-2 are respectively arranged on both sides of the first arc-extinguishing shell 5-1 in the direction d3, and the two groups of first permanent magnets 5-2 are opposite to each other with the same poles; the second arc-extinguishing assembly 6 further includes a second permanent magnet, two groups of second permanent magnets are respectively arranged on both sides of the second arc-extinguishing shell in the direction d3, and the two groups of second permanent magnets are opposite to each other with the same poles. The first permanent magnet 5-2 and the second permanent magnet, respectively, cooperate with the first arc-extinguishing shell 5-1 and the second arc-extinguishing shell to achieve the effect of magnetic blowing + air blowing, which makes arc extinguishing more efficient, is conducive to enhancing the arc extinguishing performance of the arc extinguishing device, and can realize non-polarity wiring of the contact system (that is, the first contact mechanism 2 and the second contact mechanism 3 can be connected to the positive pole and the negative pole respectively, or to the negative pole and the positive pole respectively); the first permanent magnet 5-2 and the second permanent magnet are respectively protected by the first arc-extinguishing shell 5-1 and the second arc-extinguishing shell to avoid magnetic weakening in a high temperature environment.

[0102] Specifically, the two groups of first permanent magnets 5-2 have their north poles or south poles facing each other, and the two groups of first permanent magnets 5-2 are parallel to each other; the two groups of second permanent magnets have their north poles or south poles facing each other, and the two groups of second permanent magnets are parallel to each other. Furthermore, the two groups of first permanent magnets 5-2 are symmetrical to each other; and the two groups of second permanent magnets are symmetrical to each other.

[0103] As another embodiment of the arrangement of the first permanent magnet 5-2 and the second permanent magnet, the difference from the above embodiment is that: Figure 13As shown, among the pair of ends of the first permanent magnet 5-2, the end relatively close to the first contact mechanism 2 is the permanent magnet first end, and the end relatively far away from the first contact mechanism 2 is the permanent magnet second end. The distance between the two permanent magnet first ends is less than (as shown in FIG. Figure 13 (131)) or greater than (as shown Figure 13 (132) shows) the distance between the second ends of the two permanent magnets; of the pair of ends of the second permanent magnet, the end relatively close to the second contact mechanism 3 is the third end of the permanent magnet, and the end relatively far away from the second contact mechanism 3 is the fourth end of the permanent magnet, and the distance between the third ends of the two permanent magnets is less than (as shown in Figure 13 (131)) or greater than (as shown Figure 13 (132) shows the distance between the fourth ends of the two permanent magnets. Furthermore, the angle between the plane where the first permanent magnet 5-2 is located and the first plane is α, 0<α≤5°; the angle between the plane where the second permanent magnet is located and the first plane is α, 0<α≤5°.

[0104] The above arrangement of the first permanent magnet 5 - 2 and the second permanent magnet can form an effective magnetic field in the first arc-extinguishing shell and the second arc-extinguishing shell, thereby creating a magnetic blowing effect on the arc and accelerating arc extinguishing.

[0105] Further, such as Figure 1 As shown, the first arc extinguishing assembly 5 and the second arc extinguishing assembly 6 have the same structure.

[0106] Specifically, such as Figure 1 、 10 As shown, the following will take the first arc-extinguishing assembly 5 as an example to describe the specific structure of the first arc-extinguishing assembly 5 and the second arc-extinguishing assembly 6: the first arc-extinguishing shell 5-1 includes an arc-extinguishing shell side plate 5-11 and an arc-extinguishing shell bottom plate 5-12. The arc-extinguishing shell side plate 5-11 is an arc-shaped plate, the center of which preferably coincides with the rotation center of the first contact mechanism 2. The arc-extinguishing shell bottom plate 5-12 is a fan-shaped plate, the center of which preferably coincides with the rotation center of the first contact mechanism 2. The two arc-shaped sides of the arc-extinguishing shell bottom plate 5-12 are respectively bent and connected to the two arc-extinguishing shell side plates 5-11, and the two arc-extinguishing shell side plates 5-11 are arranged opposite each other; the first permanent magnet 5-2 is a fan-shaped plate, and two groups of first permanent magnets 5-2 are respectively arranged on both sides of the two arc-extinguishing shell side plates 5-11. Furthermore, the arc-extinguishing shell side plates 5-11 are provided with permanent magnet mounting grooves for the first permanent magnets 5-2 to be embedded therein.

[0107] like Figure 1-2As shown, the contact system further includes a first terminal block 7, a second terminal block 8, a first flexible conductor 9, and a second flexible conductor 10. The first terminal block 7 and the second terminal block 8 are respectively fixedly mounted on the unit housing. The first terminal block 7 is electrically connected to the first contact mechanism 2 via the first flexible conductor 9. Specifically, the first terminal block 7 is electrically connected to the first contact assembly 2-2 via the first flexible conductor 9. The second terminal block 8 is electrically connected to the second contact mechanism 3 via the second flexible conductor 10. Specifically, the second terminal block 8 is electrically connected to the second contact assembly 3-2 via the second flexible conductor 10. Furthermore, the first terminal block 7, the first contact mechanism 2, the second contact mechanism 3, and the second terminal block 8 are sequentially arranged along direction d1.

[0108] Specifically, the first soft conductor 9 and the second soft conductor 10 are both copper soft wires; the first terminal block 7 is inserted into the first terminal block mounting seat 1-21 of the unit shell, and the second terminal block 8 is inserted into the second terminal block mounting seat 1-31 of the unit shell.

[0109] like Figure 1 and 9 FIG. 1 shows an embodiment of the unit shell.

[0110] The unit shell includes a shell base 1 and a shell cover (not shown in the figure) which are relatively assembled together along the direction d3; the shell base 1 includes a first left side wall 1-41 and a first right side wall 1-42 arranged relatively along the direction d1, a first upper side wall 1-43 and a first lower side wall 1-44 arranged relatively along the direction d2, and a first bottom wall 1-45; the four side edges of the first bottom wall 1-45 are respectively bent and connected with the first left side wall 1-41, the first right side wall 1-42, the first upper side wall 1-43 and the first lower side wall 1-44 to form a box-like structure with one side open; the shell cover includes a second bottom wall, which is arranged relatively to the first bottom wall 1-45 along the direction d3; the first left side wall 1-41 is provided with a first plug for the first wiring board 7 to pass through. A hole is provided on the inner side of the first left side wall 1-41; a first terminal block mounting seat 1-21 is provided on the inner side of the first right side wall 1-42; a second jack for the second terminal block 8 to pass through is provided on the inner side of the second right side wall 1-42; the auxiliary contact limiting rib 1-1 and the auxiliary contact positioning rib 1-5 extend along the direction d2, one end of which is connected to the first lower side wall 1-44 and the other end extends toward the first upper side wall 1-43, and one side of the auxiliary contact limiting rib 1-1 and the auxiliary contact positioning rib 1-5 is connected to the first bottom wall 1-45; the first shaft rear mounting hole 1-31 and the second shaft rear mounting hole 1-32 are both arranged on the first bottom wall 1-45; the first shaft front mounting hole and the second shaft front mounting hole are both arranged on the second bottom wall.

[0111] In the switch electrical apparatus of the present invention, when the number of the switch units is ≥2, the switch units are stacked together along the direction d3.

[0112] like Figure 11 FIG. 1 shows a second embodiment of the switch unit.

[0113] The switch unit of this embodiment differs from the switch unit of the first embodiment in that the first rotating shaft gear 2-11 of the first contact mechanism 2 does not directly mesh with the second rotating shaft gear of the second contact mechanism 3. The contact system 100 further includes a rack 11, which meshes with the first rotating shaft gear 2-11 and the second rotating shaft gear, respectively, driving the first and second contact mechanisms 2 and 3 to rotate synchronously in opposite directions. Furthermore, the rack 11 is movable along direction d2 and positioned between the first rotating shaft gear 2-11 and the second rotating shaft gear in direction d1. During operation, the first contact mechanism 2 rotates when driven by an external force, and simultaneously drives the second contact mechanism 3 to rotate synchronously via the rack 11. Alternatively, the second contact mechanism 3 rotates when driven by an external force, and simultaneously drives the first contact mechanism 2 to rotate synchronously via the rack 11. Alternatively, the rack 11 moves when driven by an external force, and simultaneously drives the first and second contact mechanisms 2 and 3 to rotate synchronously.

[0114] As another embodiment of the contact system 100, the contact system 100 includes two sets of racks 11, each meshing with the first rotating shaft gear 2 and the second rotating shaft gear, respectively. The two sets of racks 11 are arranged sequentially along direction d1 and are synchronously movable in opposite directions. The two sets of racks 11 synchronously move toward each other, driving the first contact mechanism 2 and the second contact mechanism 3 to disconnect from the auxiliary contact 4. The two sets of racks 11 synchronously move away from each other, driving the first contact mechanism 2 and the second contact mechanism 3 to close with the auxiliary contact 4. Furthermore, the two sets of racks 11 are located on the same side of the first rotating shaft gear 2 and the second rotating shaft gear in direction d2. The contact system 100 also includes a slider movable along direction d2 and two connecting rods, the slider being rotatably connected to one end of the two connecting rods, and the other ends of the two connecting rods being rotatably connected to the two racks 11, respectively. The slider 11 reciprocates, driving the two sets of racks 11 toward and away from each other via the two connecting rods.

[0115] like Figure 12 FIG. 1 shows a third embodiment of the switch unit.

[0116] The main difference between the switch unit of this embodiment and the switch units of the above two embodiments is that: the first contact mechanism 2 and the second contact mechanism 3 are arranged to rotate synchronously in the same direction, the first contact portion 4-2 and the second contact portion 4-3 are arranged between the first contact mechanism 2 and the second contact mechanism 3 and are arranged in sequence along the direction d2, and the contact system 100 includes a linkage member, which is a rack 11. The rack 11 is arranged to move along the direction d1 and is located on one side of the first rotating shaft gear 2-11 and the second rotating shaft gear in the direction d2. The rack 11 is respectively engaged with the first rotating shaft gear 2-11 of the first contact mechanism 2 and the second rotating shaft gear of the second contact mechanism 3. During actual operation, the first contact mechanism 2 is driven to rotate by an external force, and at the same time, the first contact mechanism 2 drives the second contact mechanism 3 to rotate synchronously through the rack 11, and the first contact mechanism 2 and the second contact mechanism 3 rotate in the same direction; or, the second contact mechanism 3 is driven to rotate by an external force, and at the same time, the second contact mechanism 3 drives the first contact mechanism 2 to rotate synchronously through the rack 11, and the first contact mechanism 2 and the second contact mechanism 3 rotate in the same direction; or, the rack 11 is driven to move by an external force, and at the same time, the rack 11 drives the first contact mechanism 2 and the second contact mechanism 3 to rotate synchronously, and the first contact mechanism 2 and the second contact mechanism 3 rotate in the same direction.

[0117] Furthermore, the first contact portion 4-2 and the second contact portion 4-2 are respectively arranged at both ends of the auxiliary contact trunk 4-1 in direction d2 and are located on both sides of the auxiliary contact trunk 4-1 in direction d2, and the auxiliary contact trunk 4-1 is located between the first contact mechanism 2 and the second contact mechanism 3 in direction d1, that is, the first contact mechanism 2, the auxiliary contact 4 and the second contact mechanism 3 are arranged in sequence along the direction d1.

[0118] As another embodiment of the linkage member, the linkage member is a gear, which is arranged between the first rotating shaft gear 2 - 11 and the second rotating shaft gear in the direction d1 and is respectively engaged with the first rotating shaft gear 2 - 11 and the second rotating shaft gear.

[0119] It should be noted that the contact system 100 is not limited to being used in disconnectors, but can also be used in other types of switching electrical appliances, such as circuit breakers.

[0120] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0121] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A contact system comprising a first contact mechanism (2) and a second contact mechanism (3) which are respectively rotatably arranged and whose rotation axes are both in a direction d3, and a fixed auxiliary contact (4); Its characteristics are: The first contact mechanism (2) and the second contact mechanism (3) are arranged to rotate synchronously and are closed or opened synchronously with the auxiliary contact (4); The auxiliary contact (4) comprises a first contact portion (4-2) cooperating with the first contact mechanism (2) and a second contact portion (4-3) cooperating with the second contact mechanism (3); the first contact portion (4-2) and the second contact portion (4-3) are plug-fitted with the first contact mechanism (2) and the second contact mechanism (3), respectively.

2. The contact system according to claim 1, wherein: During the rotation process, the first contact mechanism (2) and the second contact mechanism (3) always rotate in opposite directions.

3. The contact system according to claim 2, characterized in that: On a projection of the contact system perpendicular to the direction d3, the rotation axis of the first contact mechanism (2), the rotation axis of the second contact mechanism (3) and the auxiliary contact (4) are respectively arranged at three vertices of a first triangle.

4. The contact system according to claim 3, characterized in that: The first triangle is an isosceles triangle, the rotation axis of the first contact mechanism (2) and the rotation axis of the second contact mechanism (3) are respectively arranged at the vertices of the two base angles of the first triangle, and the auxiliary contact (4) is arranged at the vertex of the top angle of the first triangle; The first contact mechanism (2) and the second contact mechanism (3) are arranged side by side along direction d1; The plane where the rotation axes of the first contact mechanism (2) and the second contact mechanism (3) are located is a first plane, the auxiliary contact (4) is located on one side of the first plane in direction d2, and directions d1, d2 and d3 are perpendicular to each other.

5. The contact system according to claim 3, characterized in that: The first contact mechanism (2) comprises a first rotating shaft (2-1) that is rotatably arranged, and a first contact assembly (2-2) having one end arranged on the first rotating shaft (2-1) and the other end used to cooperate with the auxiliary contact (4); the second contact mechanism (3) comprises a second rotating shaft (3-1) that is rotatably arranged, and a second contact assembly (3-2) having one end arranged on the second rotating shaft (3-1) and the other end used to cooperate with the auxiliary contact (4); On a projection of the contact system perpendicular to the direction d3, the rotation axis of the first rotating shaft (2-1), the rotation axis of the second rotating shaft (3-1) and the auxiliary contact (4) are respectively arranged at the three vertices of a first triangle.

6. The contact system according to claim 1, wherein: The first contact mechanism (2) comprises a first rotating shaft (2-1) which is rotatably arranged and a first contact assembly (2-2) which is arranged on the first rotating shaft (2-1), and the first rotating shaft (2-1) comprises a first rotating shaft gear (2-11); the second contact mechanism (3) comprises a second rotating shaft (3-1) which is rotatably arranged and a second contact assembly (3-2) which is arranged on the second rotating shaft (3-1), and the second rotating shaft (3-1) comprises a second rotating shaft gear; the first rotating shaft gear (2-11) and the second rotating shaft gear are in transmission cooperation.

7. The contact system according to claim 6, characterized in that: The first rotating shaft gear (2-11) is meshed with the second rotating shaft gear.

8. The contact system according to claim 6, characterized in that: The contact system further comprises a rack (11), which is located between the first rotating shaft gear (2-11) and the second rotating shaft gear and is respectively meshed with the first rotating shaft gear (2-11) and the second rotating shaft gear.

9. The contact system according to claim 6, characterized in that: The first rotating shaft (2-1) further comprises a first rotating shaft supporting portion (2-12), a first rotating shaft gear (2-11) is connected to one end of the first rotating shaft supporting portion (2-12), and the first rotating shaft gear (2-11) and the first rotating shaft supporting portion (2-12) are coaxially and synchronously arranged to rotate, and one end of the first contact assembly (2-2) is arranged on the first rotating shaft supporting portion (2-12); the second rotating shaft (3-1) further comprises a second rotating shaft supporting portion, a second rotating shaft gear is connected to one end of the second rotating shaft supporting portion, and the second rotating shaft gear and the second rotating shaft supporting portion are coaxially and synchronously arranged to rotate, and one end of the second contact assembly (3-2) is arranged on the second rotating shaft supporting portion.

10. The contact system according to claim 1, wherein: The first contact mechanism (2) and the second contact mechanism (3) have the same structure.

11. The contact system according to claim 1, wherein: The auxiliary contact (4) further comprises an auxiliary contact trunk (4-1), the auxiliary contact (4) is fixedly arranged via the auxiliary contact trunk (4-1), and the first contact portion (4-2) and the second contact portion (4-3) are respectively arranged on the auxiliary contact trunk (4-1) and are respectively located on both sides of the auxiliary contact trunk (4-1).

12. The contact system according to claim 11, characterized in that: The auxiliary contact (4) is an integrated structure.

13. A contact system, characterized in that: The contact system comprises the contact system according to any one of claims 1 to 12.

14. The contact system according to claim 13, characterized in that: The contact system further comprises a first arc extinguishing assembly (5) cooperating with the first contact mechanism (2) and the auxiliary contact (4), and a second arc extinguishing assembly (6) cooperating with the second contact mechanism (3) and the auxiliary contact (4); the first arc extinguishing assembly (5) and the second arc extinguishing assembly (6) are respectively arranged on both sides of the auxiliary contact (4) in a direction d1, and the direction d1 and the direction d3 are perpendicular to each other.

15. The contact system according to claim 14, characterized in that: The first arc extinguishing assembly (5) comprises a first arc extinguishing shell (5-1), the first contact mechanism (2) comprises a first contact assembly (2-2), one end of the first contact assembly (2-2) that cooperates with the auxiliary contact (4) is a first contact end, and the first contact end moves in the first arc extinguishing shell (5-1) to close and open with the auxiliary contact (4); The second arc extinguishing assembly (6) includes a second arc extinguishing shell, the second contact mechanism (3) includes a second contact assembly (3-2), one end of the second contact assembly (3-2) that cooperates with the auxiliary contact (4) is a second contact end, and the second contact end moves in the second arc extinguishing shell to close and open with the auxiliary contact (4); The first arc-extinguishing shell (5-1) and the second arc-extinguishing shell are both gas-generating structures.

16. The contact system according to claim 15, characterized in that: The first arc extinguishing assembly (5) further comprises a first permanent magnet (5-2), wherein two groups of first permanent magnets (5-2) are respectively arranged on both sides of the first arc extinguishing shell (5-1) in the direction d3, and the two groups of first permanent magnets (5-2) are arranged opposite to each other with the same poles; The second arc extinguishing assembly (6) comprises a second permanent magnet, wherein two groups of second permanent magnets are respectively arranged on both sides of the second arc extinguishing shell in the direction d3, and the two groups of second permanent magnets are arranged opposite to each other with the same poles; The plane where the rotation axis of the first contact mechanism (2) and the rotation axis of the second contact mechanism (3) are located is a first plane, the auxiliary contact (4), the first arc extinguishing assembly (5) and the second arc extinguishing assembly (6) are all located on the same side of the first plane in direction d2, and directions d1, d2 and d3 are perpendicular to each other.

17. The contact system according to claim 13, wherein: The contact system further comprises a first wiring board (7), a second wiring board (8), a first soft wire (9) and a second soft wire (10); the first wiring board (7) is electrically connected to the first contact mechanism (2) via the first soft wire (9), and the second wiring board (8) is electrically connected to the second contact mechanism (3) via the second soft wire (10); the first wiring board (7), the first contact mechanism (2), the second contact mechanism (3) and the second wiring board (8) are sequentially arranged side by side along direction d1.

18. A switch electrical device, characterized in that: The switching device includes the contact system according to any one of claims 13 to 17.

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