Contact system and electrical switching device

Abstract

The present invention relates to the field of electrical low-voltage devices, and in particular to a contact system and an electrical switching device comprising same. The contact system comprises a main contact structure and at least one movable contact structure; the main contact structure comprises a main contact; the main contact comprises a main contact portion; the movable contact structure comprises a movable contact; the movable contact comprises a movable contact portion; when the main contact is located at a closed position, the main contact portion and the movable contact portion are connected to enable the main contact and the movable contact to be closed; the movable contact structure further comprises an elastic piece working in conjunction with the movable contact; and in the process of the main contact being disconnected from the movable contact, when the main contact portion drives the movable contact portion to move from an initial position to a disengaged position, the elastic piece stores energy such that the main contact continues to operate, and the elastic piece releases energy to drive the movable contact portion to reset to the initial position. The contact system and the electrical switching device have high breaking capacity.

Description

Contact system and switchgear

[0001] This application claims priority to Chinese patent application number 202310823656.2 and filing date July 6, 2023, and Chinese patent application number 202321758907.5 and filing date July 6, 2023. The entire contents of the above Chinese patent applications are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of low-voltage electrical appliances, and in particular to a contact system and a switching electrical appliance comprising the contact system. Background Art

[0003] The contact system of existing switching electrical appliances is mostly implemented by the cooperation of a moving contact and a static contact. The moving contact rotates or moves as a whole to close and disconnect with the static contact to conduct and disconnect the circuit in which the switching electrical appliance is located. Among them, the breaking speed of the moving contact and the static contact is an important factor affecting the breaking capacity of the contact system. At present, the method of increasing the energy storage of the operating mechanism is often used to increase the action speed of the moving contact to increase the breaking speed of the moving and static contacts. However, due to structural strength and space limitations, the effect is poor.

[0004] Summary of the Invention

[0005] The object of the present invention is to overcome at least one drawback of the prior art and to provide a contact system and a switching device having a strong breaking capacity.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A contact system, comprising a main contact structure and at least one set of movable contact structures, wherein the main contact structure comprises a main contact, the main contact comprising at least one main contact portion, and the movable contact structure comprises a movable contact, the movable contact comprising a movable contact portion; when the main contact is in a closed position, the main contact portion engages with the movable contact portion to close the main contact and the movable contact;

[0008] The movable contact structure further includes an elastic member matched with the movable contact;

[0009] During the disconnection process between the main contact and the movable contact, when the main contact part drives the movable contact part to move from the initial position to the disengaged position, the elastic member stores energy, the main contact continues to move, and the elastic member releases energy to drive the movable contact part to return to the initial position.

[0010] Furthermore, the main contact structure is pivotally arranged or integrally movable.

[0011] Furthermore, the main contact structure is pivotally arranged and is a rotating contact structure, the main contact is a rotating contact, and the main contact part is a rotating contact part. When the rotating contact is in the closed position, the rotating contact part combines with the movable contact part to close the rotating contact and the movable contact; during the disconnection process of the rotating contact and the movable contact, when the rotating contact part drives the movable contact part to move from the initial position to the disengaged position, the elastic part stores energy, the rotating contact continues to rotate, the elastic part releases energy and drives the movable contact part to reset to the initial position, and the main contact part and the movable contact part move away from each other in opposite directions.

[0012] Furthermore, the contact system includes two sets of movable contact structures, and the rotating contact includes two rotating contact parts respectively arranged at its two ends. When the rotating contact is in the closed position, the two rotating contact parts respectively combine with the two movable contact parts to close the rotating contact and the movable contact.

[0013] Furthermore, the movable contact is arranged to rotate or move as a whole.

[0014] Furthermore, the movable contact is pivotally arranged in the middle, with a movable contact portion provided at one end and the other end cooperating with an elastic member; the movable contact rotates to switch the movable contact portion between an initial position and a disengaged position.

[0015] Furthermore, the movable contact is arranged to move as a whole within a preset plane, and the movable contact moves as a whole to switch the movable contact portion between the initial position and the disengaged position.

[0016] Furthermore, the movable contact structure further includes a guide rail structure, and the movable contact is arranged to move as a whole along the extension direction of the guide rail structure.

[0017] Furthermore, the movable contact structure also includes a fixed movable contact shaft, the movable contact includes a guide plate, the guide rail structure includes a guide rail wall and a guide rail groove formed between two relatively arranged guide rail walls, the movable contact shaft is slidably inserted in the guide rail groove, and the guide plate and the movable contact shaft are respectively located on both sides of a guide rail wall.

[0018] Furthermore, the movable contact shaft and the guide plate are in sliding contact with both sides of the corresponding guide rail wall respectively.

[0019] Furthermore, the rotary contact structure further includes a pivotally arranged rotating shaft, the rotary contact is inserted into the rotating shaft and both ends protrude from radial sides of the rotating shaft respectively;

[0020] The two groups of movable contact structures are mutually symmetrical structures with the rotation center of the rotating contact structure as the center of symmetry.

[0021] Furthermore, the main contact portion and the movable contact portion are plugged into each other to close the main contact structure and the movable contact structure.

[0022] Furthermore, the contact system also includes at least one set of plug-in structures, which include a plug-in plate and a socket, one of which is arranged on the main contact part and the other is arranged on the movable contact part. The plug-in plate is inserted into the socket and clamped by the inner side wall of the socket, so that the main contact part and the movable contact part are combined.

[0023] Furthermore, the rotating contact structure also includes a rotating shaft for rotating around its own axis, the rotating shaft includes a rotating shaft seat and a rotating shaft cover that are relatively assembled along its axial direction, the rotating contact is clamped between the rotating shaft seat and the rotating shaft cover and includes rotating contact parts arranged on both radial sides of the rotating shaft for cooperating with the movable contact; the rotating shaft also includes a plug part arranged at one axial end thereof, the plug part includes a main plug and a secondary plug, the main plug is arranged on the side of the rotating shaft cover away from the rotating shaft seat, the secondary plug is arranged on the side of the rotating shaft seat facing the rotating shaft cover, the secondary plug passes through the rotating shaft cover hole of the rotating shaft cover and is side by side with the main plug; the rotating shaft also includes a socket part arranged on the other axial end thereof, the socket part is adapted to the plug part.

[0024] A switching electrical appliance comprises the contact system.

[0025] In the contact system of the present invention, after the main contact part drives the movable contact part to move to the disengaged position, the main contact continues to move, and the elastic part releases energy to drive the movable contact part to quickly reset to the initial position. At this time, the main contact part and the movable contact part generally move in opposite directions, so that the distance between the main contact part and the movable contact part is rapidly increased, which can quickly lengthen the arc generated by the disconnection of the main contact and the movable contact, and can significantly improve the arc extinguishing ability and breaking ability of the contact system, thereby realizing rapid disconnection.

[0026] In addition, the rotating contact cooperates with two sets of movable contacts to form a double-breakpoint structure, which is conducive to further improving the breaking capacity.

[0027] In addition, the two groups of movable contact structures adopt a centrally symmetrical structure, which is conducive to reducing the types of structures and lowering production costs. Moreover, there is no need to identify the two groups of movable contact structures during the installation process, which is conducive to improving assembly efficiency.

[0028] The switch electrical appliance of the present invention includes the contact system and has a strong breaking capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a switch device according to the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contact is pivotally arranged, the movable contact and the movable contact are in a disconnected state, and the plug-in structure adopts the first arrangement mode;

[0030] FIG2 is a schematic structural diagram of a switch device according to the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contact is pivotally arranged, the main contacts and movable contacts are in a closed state, and the plug-in structure adopts the first arrangement mode;

[0031] FIG3 is a schematic diagram of the structure of the switch electrical apparatus of the present invention, wherein the main contacts and movable contacts of the contact system adopt the method B, the movable contact is pivotally arranged, the main contact portion drives the movable contact portion to move to the disengaged position, and the plug-in structure adopts the first arrangement method;

[0032] FIG4 is a schematic structural diagram of the main contact structure in FIG1-3 of the present invention, wherein the main contact portion is a plug-in plate;

[0033] FIG5 is a schematic structural diagram of the main contact of the main contact structure in FIG4 of the present invention;

[0034] FIG6 is a schematic structural diagram of the movable contact in FIG1-3 of the present invention, wherein the cross section thereof is a U-shaped structure;

[0035] FIG7 is a schematic structural diagram of a switch device according to the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contact is pivotally arranged, the main contacts and movable contacts are in a closed state, and the plug-in structure adopts the second arrangement mode;

[0036] FIG8 is a schematic structural diagram of the main contact structure in FIG7 of the present invention;

[0037] FIG9 is a schematic structural diagram of the movable contact in FIG7 of the present invention;

[0038] FIG10 is a schematic structural diagram of a switch electrical apparatus of the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contacts are arranged to move as a whole, the main contacts and movable contacts are in a closed state, and the plug-in structure adopts the first setting mode;

[0039] FIG11 is a schematic diagram of the three-dimensional structure of the switch electrical apparatus of the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contacts are arranged to move as a whole, the main contacts and movable contacts are in a closed state, and the plug-in structure adopts the first setting mode;

[0040] FIG12 is a schematic diagram of the structure of the switch electrical apparatus of the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contact is arranged to move as a whole, the main contact portion drives the movable contact portion to move to the disengaged position, and the plug-in structure adopts the first setting mode;

[0041] FIG13 is a schematic structural diagram of a switch device of the present invention, wherein the main contacts and movable contacts of the contact system adopt mode B, the movable contacts are arranged to move as a whole, the main contacts and movable contacts are in the disconnected state, and the plug-in structure adopts the first setting mode;

[0042] FIG14 is a schematic structural diagram of the movable contact in FIG10-13 of the present invention;

[0043] 15 is a schematic structural diagram of the movable contact structure of the plug structure of the present invention using the third setting mode;

[0044] 16 is a schematic structural diagram of the main contacts of the plug-in structure of the present invention using the third setting mode;

[0045] 17 is a schematic structural diagram of the movable contact structure of the plug structure of the present invention adopting the fourth setting mode;

[0046] FIG18 is a schematic structural diagram of the main contacts of the plug-in structure of the present invention using the fourth setting mode;

[0047] 19 is a schematic structural diagram of the rotary contact structure of the present invention, showing the structure of the socket portion;

[0048] FIG20 is a schematic structural diagram of the rotary contact structure of the present invention, showing the structure of the plug portion;

[0049] FIG. 21 is an exploded view of the rotary contact structure of the present invention.

[0050] Description of Reference Numerals

[0051] 1 housing;

[0052] 1-0 positioning stop; g guide rail structure; 1-1 guide rail groove; 1-2 guide rail wall;

[0053] m Main contact structure;

[0054] 2 main contact; 2-0 main contact portion; 2-1 main contact blade; 2a first main contact plate; 2b second main contact plate; 2c third main contact plate;

[0055] 3 Shaft, socket portion 3g, plug portion 3p, shaft seat 31, seat body 31-0, seat body trunk 31-00, seat body end plate 31-01, avoidance notch 31-010, auxiliary plug 31-1, locking hole 31-2, shaft seat groove 31-3, main socket 31-5, auxiliary socket 31-6, shaft cover 33, cover plate 33-0, shaft cover hole 33-1, main plug 33-2, hook 33-3;

[0056] s movable contact structure;

[0057] 4 movable contact; 4-1 movable contact portion; 4-2 movable contact shaft hole; 4-3 movable contact limiting protrusion; 4-4 guide plate; 4-5 movable contact hanging spring portion;

[0058] 5. Movable contact shaft;

[0059] 6 elastic parts;

[0060] c socket;

[0061] 7 soft connection;

[0062] 8 terminal blocks;

[0063] 9 spring fixed shaft; DETAILED DESCRIPTION

[0064] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the switch device of the present invention. The switch device of the present invention is not limited to the description of the following embodiments.

[0065] The switching device of the present invention includes a contact system, which includes a main contact structure m and at least one group of movable contact structures s. The main contact structure m and the movable contact structure s are closed and disconnected to conduct and disconnect the circuit in which the switching device is located. Furthermore, the switching device also includes an operating mechanism, which is transmission-connected to the main contact structure m to drive the main contact structure m and the movable contact structure s to close and disconnect. Furthermore, the switching device also includes a housing 1 for accommodating the contact system. Furthermore, when the switching device of the present invention is a rotary disconnector, the housing 1 is the housing of the switch unit of the rotary disconnector; or, when the switching device of the present invention is a circuit breaker, the housing 1 is the circuit breaker housing; or, when the switching device of the present invention is a transfer switch, the housing 1 is the transfer switch housing.

[0066] As shown in Figures 1-3, 7, and 11-14, the main contact structure m includes a main contact 2, which includes at least one main contact portion 2-0. The movable contact structure s includes a movable contact 4, which includes a movable contact portion 4-1. When the main contact 2 is in the closed position, the main contact portion 2-0 is combined with the movable contact portion 4-1 to close the main contact 2 and the movable contact 4. Furthermore, the movable contact structure s also includes an elastic member 6 that cooperates with the movable contact 4. During the disconnection process between the main contact 2 and the movable contact 4, the main contact portion 2-0 drives the movable contact portion 4-1 to move from the initial position to the disengaged position. At the same time, the movable contact 4 stores energy in the elastic member 6. When the main contact 2 continues to move, the movable contact portion 4-1 disengages from the main contact portion 2-0 and the elastic member 6 releases energy to drive the movable contact portion 4-1 to return to the initial position. That is, the main contact 2 moves from the closed position to the disengaged position. During the disconnect position action, the main contact part 2-0 moves from the closed position to the middle position and drives the movable contact part 4-1 to move from the initial position to the disengaged position. At the same time, the movable contact 4 causes the elastic member 6 to store energy. When the movable contact part 4-1 is in the disengaged position, the elastic member 6 stores energy to the maximum. The main contact 2 continues to move toward the disconnect position, then the movable contact part 4-1 disengages from the main contact part 2-0 and the elastic member 6 releases energy and drives the movable contact part 4-1 to reset to the initial position. At the same time, the main contact 2 continues to move to the disconnect position. In the contact system, after the main contact portion 2-0 drives the movable contact portion 4-1 to move to the disengaged position, the main contact 2 continues to move, and the elastic member 6 drives the movable contact portion 4-1 to quickly reset to the initial position. At this time, the main contact portion 2-0 and the movable contact portion 4-1 generally move in opposite directions, so that the distance between the main contact portion 2-0 and the movable contact portion 4-1 is rapidly enlarged, which can quickly lengthen the arc generated by the disconnection of the main contact 2 and the movable contact 4, and can significantly improve the arc extinguishing ability and disconnecting ability of the contact system, thereby achieving rapid disconnection. It should be pointed out that in the process of the main contact portion 2-0 driving the movable contact portion 4-1 to move from the initial position to the disengaged position, the main contact portion 2-0 and the movable contact portion 4-1 do not remain relatively stationary, and the two undergo relative movement and / or relative rotation until the main contact portion 2-0 can no longer drive the movable contact portion 4-1 to continue to move, and the elastic member 6 further stores energy. When the main contacts 2 and movable contact 4 are in the closed state, or when they are disconnected and the movable contact 4 is at rest, the position of the movable contact portion 4-1 is the initial position. The position to which the movable contact portion 4-1, driven by the main contact portion 2-0, can move, which is farthest from the initial position, is the disengaged position. When the movable contact portion 4-1 moves to the disengaged position, the movable contact 4 causes the elastic member 6 to store energy to its maximum value. The position in which the main contacts 2 and movable contact 4 are in the closed state is the closed position. The final position in which the main contacts 2 and movable contact 4 remain at rest after disconnection is the disconnected position. The intermediate position is the position that the main contact 2 passes through during its movement from the closed position to the disconnected position.

[0067] As shown in Figures 1-3, 7, and 10-13, the contact system further includes a wiring terminal 8, which is matched with the movable contact 4 in a one-to-one manner. The movable contact 4 is electrically connected to the wiring terminal 8 through a flexible connection 7.

[0068] As another embodiment, the movable contact 4 is electrically connected to the terminal 8 through a hard connection.

[0069] Specifically, in the contact system, the main contact 2 and the movable contact 4 have at least the following three configurations:

[0070] Mode A: The contact system is provided with a group of main contact structures m and a group of movable contact structures s. The main contact 2 of the main contact structure m is provided with a main contact portion 2-0, and the movable contact 4 of the movable contact structure s is provided with a movable contact portion 4-1. The main contact 2 is actuated to switch between the closed position and the disconnected position, so that the main contact portion 2-0 is engaged with and disengaged from the movable contact portion 4-1.

[0071] Mode B: The contact system is provided with a group of movable contact structures and two groups of movable contact structures s. The main contact 2 of the main contact structure m is provided with two main contact parts 2-0. The movable contacts 4 of the two groups of movable contact structures s are each provided with a movable contact part 4-1. The main contact 2 is actuated to switch between the closed position and the disconnected position, so that the two main contact parts 2-0 are respectively engaged with and disengaged from the two movable contact parts 4-1. When the two main contact parts 2-0 are respectively engaged with the two movable contact parts 4-1, the three are in a series state.

[0072] Specifically, as shown in Figures 1-2, 7, and 10-13, the main contact 2 includes two main contact portions 2-0 disposed at its ends. The contact system includes two sets of movable contact structures s, each disposed on either side of the main contact structure m. The two sets of main contact portions 2-0 are respectively configured to close and disconnect with the movable contact portions 4-1 of the two sets of movable contacts 4. The contact system utilizes a dual-breakpoint structure, which further improves its breaking and arc-extinguishing capabilities. Furthermore, the two sets of movable contacts 4 are electrically connected to two sets of terminal blocks 8 via two flexible connectors 7.

[0073] Method C: The contact system is provided with a group of movable contact structures and two groups of movable contact structures s. The main contact 2 of the main contact structure m is provided with a main contact portion 2-0, and the movable contacts 4 of the two groups of movable contact structures s are each provided with a movable contact portion 4-1. The main contact portion 2-0 moves and switches between two working positions to respectively combine with and separate from the two movable contact portions 4-1, that is: when the main contact portion 2-0 is combined with one movable contact portion 4-1, it is disengaged from the other movable contact portion 4-1.

[0074] Contact systems of types A and B are preferably used in rotary disconnectors, circuit breakers, etc.

[0075] The contact system of type C is preferably used in a changeover switch.

[0076] Furthermore, the main contact structure m is pivotally arranged or integrally movable.

[0077] Furthermore, the movable contact 4 is pivotally arranged or integrally movable.

[0078] Specifically, the movement modes of the main contact structure m and the movable contact structure s have the following four settings:

[0079] Mode 1: The main contact structure m is pivotally arranged, and the movable contact 4 is pivotally arranged. The main contact structure m rotates to engage and disengage the main contact portion 2-0 with the movable contact portion 4-1, that is, the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m rotates from the closed position to the disconnected position, the main contact structure m rotates from the closed position to the intermediate position and the main contact portion 2-0 drives the movable contact portion 4-1 to rotate around the rotation center of the movable contact 4, so that the entire movable contact The head 4 rotates, causing the movable contact part 4-1 to rotate from the initial position to the disengaged position. At the same time, the movable contact 4 causes the elastic member 6 to store energy. When the movable contact part 4-1 rotates to the disengaged position, the elastic member 6 stores energy to the maximum. After the main contact part 2-0 is disengaged from the movable contact part 4-1, the elastic member 6 releases energy to drive the movable contact part 4-1 to rotate from the disengaged position to the initial position. At the same time, the main contact structure m continues to rotate to the disconnecting position, and the movable contact part 4-1 rotates in the opposite direction to the main contact part 2-0.

[0080] The following is an embodiment of method 1:

[0081] As shown in Figures 1-3 and 7, the main contact structure m is pivotally arranged, and the movable contact 4 of the movable contact structure s is pivotally arranged. The main contact structure m rotates to engage and disengage the main contact portion 2-0 and the movable contact portion 4-1, that is, to close and disconnect the main contact 2 and the movable contact 4.

[0082] As shown in Figures 1-3 and 7, the movable contact 4 is pivotally arranged in the middle, with a movable contact portion 4-1 provided at one end and the other end cooperating with an elastic member 6. Furthermore, the elastic member 6 is a compression spring, and the elastic member 6 and the main contact portion 2-0 are respectively located on both sides of the movable contact 4.

[0083] As shown in Figures 1-3 and 7, the movable contact 4 also includes a movable contact limiting protrusion 4-3. The movable contact portion 4-1 and the movable contact limiting protrusion 4-3 are respectively located at both ends of the movable contact 4. The elastic member 6 is a compression spring, one end of which is sleeved on the movable contact limiting protrusion 4-3, and the other end is arranged on the shell 1.

[0084] As shown in Figures 1-3 and 7, the movable contact structure s further includes a fixed movable contact shaft 5, through which the movable contact 4 is pivotally arranged. Furthermore, the movable contact shaft 5 is fixedly arranged on the housing 1, and the movable contact 4 is provided with a movable contact shaft hole 4-2 for the movable contact shaft 5 to pass through.

[0085] As shown in Figures 1-3 and 7, the elastic member 6 is a compression spring. The elastic member 6 acts on the movable contact 4 to cause one end of the movable contact portion 4-1 to abut against the positioning stop 1-0, that is, to maintain the movable contact portion 4-1 in its initial position. The positioning stop 1-0 and the elastic member 6 are located on the same side of the movable contact 4. Furthermore, the positioning stop 1-0 is a retaining rib provided on the housing 1.

[0086] As another embodiment, the elastic member 6 is a tension spring, and the positioning stop 1-0 and the elastic member 6 are located on both sides of the movable contact 4. It should be noted that the location of the elastic member 6 can be adjusted by those skilled in the art according to actual needs, and the possible locations of the elastic member 6 are not listed here one by one.

[0087] In another embodiment, the positioning stop 1-0 is eliminated, and instead, a shaft limiting surface is provided on the movable contact shaft 5, and a hole limiting surface is provided within the movable contact shaft hole 4-2 of the movable contact 4. The elastic member 6 acts on the movable contact 4 to cause the hole limiting surface to cooperate with the shaft limiting surface, thereby positioning the movable contact 4 in the initial position. The hole limiting surface and the shaft limiting surface can both be implemented using existing technologies and will not be described in detail here. Of course, there are many other ways to position the movable contact 4 in the initial position under the action of the elastic member 6, which will not be described in detail here, but all fall within the scope of protection of this application.

[0088] Specifically, as shown in Figures 13 and 7, the main contact 2 includes two main contact portions 2-0 respectively arranged at its two ends, and two groups of movable contacts 4 are respectively pivotally arranged on both radial sides of the main contact structure m. The main contact structure m rotates and switches between the closed position and the disconnected position, so that the two main contact portions 2-0 are combined with and disengaged from the movable contact portions 4-1 of the two movable contacts 4. The two groups of movable contact structures s are mutually symmetrical structures with the rotation center of the main contact structure m as the center of symmetry. The two groups of movable contact structures s adopt a centrally symmetrical structure, which is conducive to reducing the number of structural types and reducing production costs. In addition, there is no need to identify the two groups of movable contact structures s during the installation process, which is conducive to improving assembly efficiency. Furthermore, the two groups of terminal blocks 8 are mutually symmetrical structures with the rotation center of the main contact structure m as the center of symmetry.

[0089] Method 2: The main contact structure m is pivotally arranged, and the movable contact 4 is arranged to move as a whole on a preset plane. The main contact structure m rotates to make the main contact part 2-0 engage and disengage with the movable contact part 4-1, that is, the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m rotates from the closed position to the disconnected position, the main contact part 2-0 rotates from the closed position to the intermediate position and moves the movable contact 4 as a whole through the movable contact part 4-1 so that the movable contact 4 moves from the initial position 1 to the disengaged position. At this time, the elastic member 6 stores energy to the maximum value. After the main contact part 2-0 disengages from the movable contact part 4-1, the elastic member 6 releases energy to drive the movable contact part 4-1 back to the initial position, and at the same time, the main contact structure m continues to rotate to the disconnected position.

[0090] The following is an embodiment of method 2:

[0091] As shown in Figures 10-13, the main contact structure m is pivotally arranged, and the movable contact 4 is arranged to move as a whole on a preset plane. The main contact structure m rotates to make the main contact part 2-0 engage and disengage with the movable contact part 4-1, that is, to close and disconnect the main contact 2 and the movable contact 4.

[0092] As shown in Figures 10-13, the movable contact 4 is integrally movable along the extension direction of the fixed guide rail structure g. Further, the guide rail structure g is preferably a linear guide rail structure, preferably arranged on the housing 1. Of course, the guide rail structure can also be an arc-shaped guide rail structure.

[0093] As shown in Figures 10-13, the elastic member 6 is a tension spring. The elastic member 6 and the main contact portion 2-0 are located on either side of the movable contact 4. Furthermore, the movable contact 4 includes a movable contact spring portion 4-5. One end of the elastic member 6 is suspended from the movable contact spring portion 4-5, while the other end is fixedly mounted. Furthermore, the fixed end of the elastic member 6 is secured to the housing 1 via a spring fixing shaft 9. Furthermore, the geometric axis of the elastic member 6 coincides with the extension path of the guide rail structure g.

[0094] As shown in Figures 10-13, the guide rail structure g includes a guide rail wall 1-2 and a guide rail groove 1-1 formed between two oppositely arranged guide rail walls 1-2; the movable contact 4 also includes a guide plate 4-4, and the movable contact shaft 5 is slidably inserted in the guide rail groove 1-1. The guide plate 4-4 and the movable contact shaft 5 are respectively located on both sides of a guide rail wall 12, and the guide plate 4-4 and the movable contact shaft 5 are in sliding contact with both sides of the guide rail wall 1-2, that is, the movable contact shaft 5 is in sliding contact with the inner side surface of the guide rail wall 1-2 and the guide plate 4-4 is in sliding cooperation with the outer side surface of the guide rail wall 1-2, to ensure that the movable contact 4 can slide reliably and stably along the extension direction of the guide rail structure g. Furthermore, the movable contact portion 4-1 and the guide plate 4-4 are respectively located on both radial sides of the movable contact shaft 5, that is, the movable contact portion 4-1 and the guide plate 4-4 are respectively located at both ends of the movable contact 4, and a movable contact shaft hole 4-2 is set in the middle of the movable contact 4.

[0095] As shown in Figures 10-13, the elastic member 6 is a tension spring. The elastic member 6 acts on the movable contact 4 to make it abut against the positioning stop 1-0. Even if the movable contact portion 4-1 of the movable contact 4 remains in the initial position, the positioning stop 1-0 and the elastic member 6 are located on the same side of the movable contact 4. Furthermore, the positioning stop 1-0 is a retaining rib provided on the housing 1.

[0096] As another embodiment, the elastic member 6 is a compression spring, and the elastic member 6 and the positioning stop 1-0 are located on both sides of the movable contact 4. It should be noted that the location of the elastic member 6 can be adjusted by those skilled in the art according to actual needs, and the possible locations of the elastic member 6 are not listed here one by one.

[0097] As another embodiment, the movable contact structure s is not provided with a positioning stop 1 - 0 , but when the movable contact 4 is located at the initial position, the elastic member 6 acts on the movable contact 4 to make the movable contact shaft 5 abut against one end of the track structure g.

[0098] In the above-mentioned mode 1 and mode 2, the main contact structure m is pivotally arranged. Therefore, the main contact structure m can also be called a rotary contact structure, the main contact 2 can also be called a rotary contact, and the main contact portion 2 - 0 can also be called a rotary contact portion.

[0099] Method 3: The main contact structure m and the movable contact 4 are both arranged to move as a whole on a preset plane; the main contact structure m and the movable contact 4 move toward and in opposite directions to make the main contact part 2-0 engage with and disengage from the movable contact part 4-1, that is, to close and disconnect the main contact 2 and the movable contact 4; when the main contact structure m moves from the closed position to the disconnected position, the main contact structure m moves from the closed position to the intermediate position and the main contact part 2-0 drives the movable contact 4 from the initial position to the disengaged position as a whole through the movable contact part 4-1, and at the same time, the elastic member 6 stores energy to the maximum, and after the main contact part 2-0 and the movable contact part 4-1 are disengaged, the elastic member 6 releases energy to drive the movable contact part 4-1 back to the initial position, and at the same time, the main contact structure m continues to move to the disconnected position, and the movement directions of the main contact part 2-0 and the movable contact part 4-1 are opposite.

[0100] Mode 4: The main contact structure m is arranged to move as a whole on a preset plane, and the movable contact 4 is pivotally arranged; the main contact structure m moves as a whole to approach and move away from the movable contact 4, so that the main contact part 2-0 and the movable contact part 4-1 are combined and disengaged, that is, the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m moves from the closed position to the disconnected position, the main contact structure m moves as a whole from the closed position to the middle position and the main contact part 2-0 drives the movable contact part 4-1 to rotate around the rotation center of the movable contact 4 to rotate the entire movable contact 4, and at the same time, the movable contact 4 causes the elastic member 6 to store energy, and when the movable contact part 4-1 rotates to the disengaged position, the elastic member 6 stores energy to the maximum, and the main contact structure m continues to move from the middle position to the disconnected position to disengage the main contact part 2-0 from the movable contact part 4-1, and the elastic member 6 releases energy to drive the movable contact part 4-1 to rotate in the opposite direction and reset to the initial position, and the main contact structure m continues to move to the disconnected position.

[0101] In the switch apparatus of the present invention, the movement mode of the main contact structure m and the movable contact structure s of the contact system preferably adopts Mode 1 or Mode 2. Furthermore, in Modes 1 and 2, the main contact structure m also includes a pivotally arranged shaft 3, the main contact structure m is pivotally arranged via the shaft 3, the main contact 2 is inserted into the shaft 3, and the main contact portion 2-0 protrudes radially from one side of the shaft 3.

[0102] As shown in Figure 1-18, the main contact portion 2-0 and the movable contact portion 4-1 are plugged together to achieve the combination of the main contact portion 2-0 and the movable contact portion 4-1. The structure is simple and the contact is reliable, which is conducive to simplifying the structure. Furthermore, the contact system also includes at least one set of plug-in structures, which includes a plug-in plate and a socket c, one of which is set on the main contact portion 2-0 and the other is set on the movable contact portion 4-1. The plug-in plate device is clamped by the inner side wall of the socket c in the socket, so that the main contact portion 2-0 and the movable contact portion 4-1 are combined. Furthermore, the main contact 2 includes two main contact portions 2-0 respectively set at its two ends, and the two main contact portions 2-0 cooperate with the movable contact portions 4-1 of the two sets of movable contacts 4.

[0103] Specifically, the main contact portion 2-0 and the movable contact portion 4-1 are plugged together through a set of plug-in structures:

[0104] As shown in Figures 1-6, a first configuration of the plug-in structure is illustrated: the main contact portion 2-0 is a plug-in plate, and the movable contact portion 4-1 has a U-shaped cross-section. A socket c is formed in the middle of the U-shaped structure, into which the plug-in plate is inserted. Furthermore, the movable contact 4 is formed from a bent metal sheet, forming the U-shaped cross-section of the movable contact portion 4-1.

[0105] As shown in Figures 7-9, a second configuration of the plug-in structure is shown: the main contact portion 2-0 includes two opposing main contact blades 2-1, forming a socket c between the two main contact blades 2-1. The movable contact portion 4-1 is a plug plate, which is inserted into the socket c and clamped by the inner sidewall of the socket c. The main contact 2 includes two parallel and spaced main contact plates, namely a first main contact plate 2a and a second main contact plate 2b. The main contact blades 2-1 are provided at both ends of the first main contact plate 2a and the second main contact plate 2b.

[0106] Specifically, the main contact portion 2-0 and the movable contact portion 4-1 are plugged together using multiple plug-in structures. Furthermore, the main contact portion 2-0 is provided with a plug plate and a socket c, which are movable plug plates and movable sockets, with at least one side wall of the movable socket serving as the movable plug plate; the movable contact portion 4-1 is provided with a plug plate and a socket c, which are static plug plates and static sockets, with at least one side wall of the static socket serving as the static plug plate; the main contact portion 2-0 and the movable contact portion 4-1 are plugged together, with the dynamic plug plate inserted into the static socket, and the static plug plate inserted into the movable socket, with the side walls of the dynamic and static sockets arranged alternately.

[0107] As shown in Figures 15-16, a third configuration of the plug-in structure is shown: the main contact portion 2-0 includes two main contact blades 2-1 arranged opposite each other, the two main contact blades 2-1 serving as two movable plug plates with a movable socket formed between them; the movable contact portion 4-1 includes two static sockets, with the sidewalls between the two static sockets serving as static plug plates; when the main contact portion 2-0 is coupled to the movable contact portion 4-1, the two main contact blades 2-1 are respectively inserted into the two static plug plates, the static plug plates are inserted into the movable socket, and the two sidewalls on either side of the two static plug plates are clamped onto the two main contacts 2-1. Furthermore, the main contact 2 includes two parallel and spaced main contact plates, namely a first main contact plate 2a and a second main contact plate 2b, with main contact blades 2-1 provided at both ends of the first main contact plate 2a and the second main contact plate 2b.

[0108] As shown in Figures 17-18, a fourth embodiment of the plug-in structure is shown: the main contact portion 2-0 includes three main contact blades 2-1 arranged side by side, with a movable socket formed between two adjacent main contact blades 2-1, and the main contact blade 2-1 located in the middle serving as a movable plug plate. The movable contact portion 4-1 has a U-shaped cross-section, with a socket c formed in the middle of the U-shaped structure serving as a static socket, and the side walls on both sides of the static contact serving as static plug plates. When the main contact portion 2-0 and the movable contact portion 4-1 are combined, one movable plug plate is inserted into the static socket, two static plug plates are inserted into the two movable sockets, and the two main contact blades 2-1 are clamped on both sides of the movable contact portion 4-1. Furthermore, the main contact 2 includes three main contact plates arranged side by side, namely, a first main contact plate 2a, a third main contact plate 2c, and a second main contact plate 2b. Main contact blades 2-1 are provided at both ends of each of the three main contact plates, and the main contact blade 2-1 of the second main contact plate 2c serves as a movable plug plate.

[0109] It should be noted that the main contact portion 2-0 and the movable contact portion 4-1 are not limited to plug-in mating to achieve the combination of the two. For example, the main contact portion 2-0 and the movable contact portion 4-1 can also be mated through a snap-fit ​​structure, which includes a first structure and a second structure for use in conjunction with each other. The snap-fitting first and second structures release the snap-fitting when pulled by a predetermined external force. For example, the first and second structures are two semi-arrow-shaped hooks for use in conjunction with each other; or, the first structure is two elastic clamping arms provided on the movable contact portion 4-1, each elastic clamping arm being a >-shaped structure, with the tips of the >-shaped structures of the two elastic clamping arms facing each other; the second structure is two protrusions provided on the main contact portion 2-0. When the main contact 2 and the movable contact 4 are closed, the two protrusions enter between the two elastic clamping arms from between their free ends, squeeze through between the tips of the >-shaped structures of the two elastic clamping arms, and enter between the other ends of the two elastic clamping arms.

[0110] As shown in Figures 19-21, it is an embodiment of the rotating contact structure.

[0111] In the rotating contact structure of this embodiment, the rotating shaft 3 includes a rotating shaft seat 31 and a rotating shaft cover 33 that are relatively assembled along its axial direction. The rotating contact is clamped between the rotating shaft seat 31 and the rotating shaft cover 33 and includes at least one rotating contact portion protruding from one radial side of the rotating shaft 3 for cooperating with the movable contact 4. Furthermore, the rotating contact includes two rotating contact portions respectively arranged at its two ends, the two rotating contact portions being a first rotating contact portion and a second rotating contact portion, respectively. The two rotating contact portions are used to close and disconnect with two movable contacts 4 arranged on both radial sides of the rotating contact structure, respectively. The two movable contacts 4 are a first movable contact for closing and disconnecting with the first rotating contact portion and a second movable contact for closing and disconnecting with the second rotating contact portion. The rotating contact structure and the two movable contacts 4 form a contact system with dual breakpoints, which is conducive to improving the breaking capacity of the contact system and the switching electrical appliance.

[0112] Furthermore, the rotating shaft 3 includes a plug portion 3p disposed at one radial end thereof. The plug portion 3p is configured to be pluggably connected to an external structure. The plug portion 3p includes a main plug 33-2 and a secondary plug 31-1. The main plug 33-2 is disposed on the side of the rotating shaft cover 33 facing away from the rotating shaft seat 31, and the secondary plug 31-1 is disposed on the side of the rotating shaft seat 31 facing the rotating shaft cover 33. The secondary plug 31-1 passes through the rotating shaft cover hole 33-1 of the rotating shaft cover 33 and is arranged side by side with the main plug 33-2 to form the plug portion 3p. The "external structure" may be the output shaft of the operating mechanism; alternatively, the "external structure" may refer to a plurality of rotating contact structures arranged in parallel and linked along their axial direction. The plug portion 3p of one rotating shaft 3 is pluggably connected to an adjacent rotating shaft 3, thereby achieving linkage of the rotating contact structures, that is, achieving synchronized closing and opening of the contact systems. The plug portion 3p is composed of a main plug 33-2 disposed on the shaft cover 33 and a secondary plug 31-1 disposed on the shaft seat 31. This improves the structural strength of the plug portion 3p, ensures its reliability in plugging and connecting with external structures, ensures the synchronous operation of the shaft cover 33 and the shaft seat 31 during the rotation of the shaft 3, and ensures the synchronous rotation of each rotating contact structure when adjacent shafts 3 are plugged and connected. Furthermore, the rotation axis of the shaft 3 passes through the middle of the main plug 33-2, and the secondary plug 31-1 is arranged parallel to the rotation axis of the shaft 3 and spaced apart. Furthermore, the secondary plug 31-1 is spaced apart from the main plug 33-2, that is, there is a gap between the secondary contact 31-1 and the main plug 33-2, and the width of the gap can be adjusted according to actual needs.

[0113] Furthermore, the cross-section of the main plug 33-2 is an elongated strip, the center of which is preferably located on the rotation axis of the rotating shaft 3. The length of the elongated strip is 20%-70% of the maximum outer diameter of the rotating shaft seat 31. Furthermore, the length of the elongated strip is 25%-65% of the maximum outer diameter of the rotating shaft seat 31. This ensures the structural strength of the main plug 33-2 and facilitates the structural design of the rotating shaft cover 33.

[0114] Furthermore, the rotating shaft 3 also includes a socket portion 3g disposed at its other axial end. The socket portion 3g is compatible with the plug portion 3p, that is, the shape of the socket portion 3g matches the shape of the plug portion 3p. When the two are located on two different structures (e.g., two rotating shafts 3), they can plug and mate with each other. When multiple rotating contact structures are arranged side by side along their axial direction, the plug portion 3p of one rotating shaft 3 plugs and mates with the socket portion 3g of the other rotating shaft 3, simplifying the connection structure and operation of each rotating contact structure and ensuring the connection strength and consistency of operation of each rotating shaft 3. Furthermore, the socket portion 3g includes a main socket 31-5 and a secondary socket 31-6. The main socket 31-5 is compatible with the main plug 33-2, and the secondary socket 31-6 is compatible with the secondary plug 31-1. Furthermore, the rotation axis of the rotating shaft 3 passes through the middle of the main socket 31-5, and the secondary socket 31-6 is arranged parallel to the rotation axis of the rotating shaft 3 and spaced apart. Furthermore, the auxiliary jack 31 - 6 and the main jack 31 - 5 are spaced apart, that is, a partition wall is provided between the auxiliary jack 31 - 6 and the main jack 31 - 5 , and the width of the partition wall can be adjusted as needed.

[0115] Specifically, the plug portion 3p includes two groups of secondary plugs 31-1 and one group of main plugs 33-2. The two groups of secondary plugs 31-1 are respectively arranged on both sides of the main plug 33-2, and a gap is provided between the secondary plugs 31-1 and the main plug 33-2; the socket portion 3g includes two groups of secondary sockets 31-6 and one group of main sockets 31-5. The two groups of secondary sockets 31-6 are respectively arranged on both sides of the main socket 31-5, and a partition wall is provided between the secondary sockets 31-6 and the main socket 31-5.

[0116] As another embodiment, the plug portion 3p includes two groups of main plugs 33-2 and one group of auxiliary plugs 31-1. The rotation axis of the shaft 3 (which is also the rotation axis of the rotating contact structure) passes through the middle of the auxiliary plug 31-1. The two groups of main plugs 33-2 are respectively arranged on both sides of the auxiliary plug 31-1. The shaft cover 33 is provided with a shaft cover hole 33-1 for the auxiliary plug 31-1 to pass through. The shaft cover hole 33-1 is located between the two groups of main plugs 33-2.

[0117] Furthermore, the two groups of the auxiliary plugs 31 - 1 are symmetrically arranged on both sides of the main plug 33 - 2 in the radial direction of the rotating shaft 3 ; the two groups of the auxiliary sockets 31 - 6 are symmetrically arranged on both sides of the main socket 31 - 5 in the radial direction of the rotating shaft 3 .

[0118] Furthermore, the cross-section of the secondary plug 31-1 is fan-shaped. A pair of opposing side surfaces of the main plug 33-2 (i.e., the two large side surfaces of the main plug 33-2, which face either side of the two secondary plugs 31-1) are each provided with a plurality of grooves extending axially along the shaft 3. This gives the main plug 33-2 a fishbone-like cross-section, ensuring the linkage and synchronization of the two shafts 3 when the plug portion 3p and the socket portion 3g of the two adjacent shafts 3 mate. The cross-section of the secondary socket 31-6 is fan-shaped. Furthermore, the sides of the main socket 31-5 facing the two secondary sockets 31-6 are provided with a plurality of ribs (not shown) extending axially along the shaft 3, which mate with the grooves.

[0119] Furthermore, the shaft cover 33 further includes a cover plate 33-0. The main plug 33-2 is disposed on the side of the cover plate 33-0 facing away from the shaft seat 31 (also on the side of the cover plate 33-0 facing away from the base 31-0 of the shaft seat 31). The cover plate 33-0 is provided with two sets of shaft cover holes 33-1, which are disposed on either side of the main plug 33-2 for the two sets of secondary plugs 31-1 to pass through. The shaft seat 31 further includes a base 31-0. The secondary plugs 31-1 are disposed on the side of the base 31-0 facing the shaft cover 33 (also on the side of the base 31-0 facing the cover plate 33-0). The cover plate 33-0 is preferably a circular plate structure, and the base 31-0 is preferably a cylindrical structure.

[0120] Furthermore, the socket portion 3g is disposed on the side of the base body 31-0 facing away from the shaft cover 33 (also the side of the base body 31-0 facing away from the cover plate 33-0). Furthermore, the shaft base 31 includes an axial protrusion disposed on the side of the base body 31-0 facing away from the shaft cover 33. The axial protrusion and the plug portion 3p protrude in opposite directions along the circumference of the shaft 3, and the socket portion 3g is disposed on the axial protrusion.

[0121] As shown in FIG3-5 , the rotating shaft 3 further includes a snap-fit ​​structure, and the rotating shaft seat 31 and the rotating shaft cover 33 are connected via the snap-fit ​​structure, which simplifies the assembly operation between the two and improves assembly efficiency.

[0122] Furthermore, the latch structure includes a hook 33-3 and a hole 31-2. The hook 33-3 is located on the side of the shaft cover 33 facing the shaft seat 3, and the hole 31-2 is located on the shaft seat 31. Furthermore, the hook 33-3 is located on the side of the cover 33-0 facing the shaft seat 31, and the hole 31-2 is located on the seat body 31-0. Furthermore, the hook 33-3 is a semi-arrow-shaped hook.

[0123] 5 , the shaft seat 31 and the shaft cover 33 are connected by four sets of buckle structures, which are located at the four vertices of a quadrilateral. It should be noted that the number of the buckle structures can be increased or decreased as needed.

[0124] The rotating contact further comprises a rotating contact trunk clamped between the rotating shaft seat 31 and the rotating shaft cover 33, and the rotating contact portion is connected to the rotating contact trunk. Furthermore, the two rotating contact portions are respectively connected to the two ends of the rotating contact trunk and are located on both radial sides of the rotating shaft 3.

[0125] The shaft seat 31 is provided with a shaft seat groove 31-3 for accommodating the main body of the rotating contact. The main body of the rotating contact is disposed within the shaft seat groove 31-3. The shaft cover 33 is spliced ​​with the shaft seat 31 to clamp the main body of the rotating contact. Furthermore, the rotating contact cooperates with the rotating shaft 3 to prevent the rotating contact 32 from moving radially along the rotating shaft 3s, which could cause the rotating contact portion to fail to close with the receiving contact 3. Specifically, the rotating contact also includes a rotating contact limiting portion provided on the main body of the rotating contact. The rotating contact limiting portion cooperates with the sidewall of the shaft seat groove 31-3 to prevent the rotating contact from moving in the direction in which the shaft seat groove 31-3 extends, that is, preventing the rotating contact from moving radially along the rotating shaft 3s. Furthermore, the rotating contact limiting portion is an arc-shaped protrusion provided on the side edge of the main body of the rotating contact, and a corresponding arc-shaped groove is provided on the sidewall of the shaft seat groove 31-3. Furthermore, the shaft seat groove 31-3 is provided on one end of the seat body 31-0 of the shaft seat 31 facing the shaft cover 33. Furthermore, the shaft seat groove 31-3 is provided on one end of the seat body trunk 31-00 of the seat body 31-0 facing the shaft cover 33.

[0126] Furthermore, the seat body 31-0 of the shaft seat 31 includes a coaxially arranged seat body trunk 31-00 and a seat body end plate 31-01, the axes of the two coincide with the rotation axis of the shaft 3, the outer diameter of the seat body trunk 31-00 is smaller than the outer diameter of the seat body end plate 31-01, and the auxiliary plug 31-1 is arranged on the side of the seat body trunk 31-00 facing the shaft 33; the cover plate 33-0 of the shaft cover 33 is opposite to the seat body end plate 31-01 and is respectively located on the outer sides of the axial ends of the seat body trunk 31-00, the cover plate 33-0 and the seat body end plate 31-01 have the same outer diameter, and the main plug 33-2 is arranged on the side of the end plate 33-0 away from the shaft seat 31; the rotating contact portion At least part of it is located between the seat end plate 31-01 and the cover plate 33-0, that is, an annular groove is formed between the seat end plate 31-01 and the cover plate 33-0 and is located outside the circumference of the seat trunk 31-00, and the rotating contact portion is at least partly located in the annular groove and is blocked by the seat end plate 31-01 and the cover plate 33-0; an avoidance notch 31-010 for avoiding the bearing contact 3 is provided at the edge of the seat end plate 31-01 and / or the cover plate 33-0. During assembly, the movable contact 4 can enter between the seat end plate 31-01 and the cover plate 33-0 through the avoidance notch 31-010 to cooperate with the rotating contact portion located in the annular groove, thereby simplifying the assembly operation. Specifically, the seat end plate 31 - 01 is provided with two avoidance notches 31 - 010 , which are located at both radial ends of the seat end plate 31 - 01 and are respectively used to avoid the movable contact 4 that cooperates with the two rotating contact portions of the rotating contact.

[0127] It should be noted that, in the description of the present invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are conventionally placed in use. They are intended solely for ease of description and do not necessarily require the devices or components referred to to have a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0128] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not 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, characterized in that: The contact system comprises a main contact structure (m) and at least one group of movable contact structures (s), the main contact structure (m) comprises a main contact (2), the main contact (2) comprises at least one main contact portion (2-0), the movable contact structure (s) comprises a movable contact (4), and the movable contact (4) comprises a movable contact portion (4-1); when the main contact (2) is in a closed position, the main contact portion (2-0) is combined with the movable contact portion (4-1) to close the main contact (2) and the movable contact (4); The movable contact structure (s) further comprises an elastic member (6) cooperating with the movable contact (4); During the disconnection process between the main contact (2) and the movable contact (4), when the main contact part (2-0) drives the movable contact part (4-1) to move from an initial position to a disengaged position, the elastic member (6) stores energy, the main contact (2) continues to move, and the elastic member (6) releases energy to drive the movable contact part (4-1) to return to the initial position.

2. The contact system according to claim 1, characterized in that: The main contact structure (m) is pivotally arranged or integrally movable.

3. The contact system according to claim 2, characterized in that: The main contact structure (m) is pivotally arranged and is a rotating contact structure, the main contact (2) is a rotating contact, the main contact part (2-0) is a rotating contact part, and when the rotating contact is in a closed position, the rotating contact part and the movable contact part (4-1) are combined to close the rotating contact and the movable contact (4); during the disconnection process of the rotating contact and the movable contact (4), when the rotating contact part drives the movable contact part (4-1) to move from an initial position to a disengaged position, the elastic member (6) stores energy, the rotating contact continues to rotate, the elastic member (6) releases energy and drives the movable contact part (4-1) to reset to the initial position, and the main contact part (2-0) and the movable contact part (4-1) move in opposite directions and move away from each other.

4. The contact system according to claim 3, characterized in that: The contact system comprises two groups of movable contact structures (s), and the rotating contact comprises two rotating contact parts respectively arranged at its two ends. When the rotating contact is in a closed position, the two rotating contact parts respectively combine with two movable contact parts (4-1) to close the rotating contact and the movable contact (4).

5. The contact system according to claim 1, characterized in that: The movable contact (4) is arranged to rotate or move as a whole.

6. The contact system according to claim 5, characterized in that: The movable contact (4) is pivotally arranged in the middle, a movable contact portion (4-1) is arranged at one end, and the other end cooperates with an elastic member (6); the movable contact (4) rotates to switch the movable contact portion (4-1) between an initial position and a disengaged position.

7. The contact system according to claim 5, characterized in that: The movable contact (4) is arranged to move as a whole in a preset plane, and the movable contact (4) moves as a whole to switch the movable contact part (4-1) between an initial position and a disengaged position.

8. The contact system according to claim 7, characterized in that: The movable contact structure (s) further comprises a guide rail structure (g), and the movable contact (4) is arranged to move as a whole along the extension direction of the guide rail structure (g).

9. The contact system according to claim 8, characterized in that: The movable contact structure (s) also includes a fixed movable contact shaft (5), the movable contact (4) includes a guide plate (4-4), the guide rail structure (g) includes a guide rail wall (1-2) and a guide rail groove (1-1) formed between two guide rail walls (1-2) arranged opposite to each other, the movable contact shaft (5) is slidably inserted in the guide rail groove (1-1), and the guide plate (4-4) and the movable contact shaft (5) are respectively located on both sides of one guide rail wall (1-2).

10. The contact system according to claim 9, characterized in that: The movable contact shaft (5) and the guide plate (4-4) are in sliding contact with the two sides of the corresponding guide rail wall (1-2) respectively.

11. The contact system according to claim 3, characterized in that: The rotary contact structure further comprises a pivotally arranged rotating shaft (3), the rotary contact being inserted into the rotating shaft (3) and having two ends protruding respectively on two radial sides of the rotating shaft (3); The two groups of movable contact structures (s) are mutually symmetrical structures with the rotation center of the rotating contact structure as the symmetry center.

12. The contact system according to claim 1, characterized in that: The main contact part (2-0) and the movable contact part (4-1) are plugged together to close the main contact structure (m) and the movable contact structure (s).

13. The contact system according to claim 12, characterized in that: The contact system also includes at least one group of plug-in structures, which include a plug-in board and a socket (c), one of which is arranged on the main contact part (2-0) and the other is arranged on the movable contact part (4-1). The plug-in board is inserted into the socket (c) and clamped by the inner side wall of the socket (c), so that the main contact part (2-0) and the movable contact part (4-1) are combined.

14. The contact system according to claim 3, characterized in that: The rotating contact structure also includes a rotating shaft (3) for rotating around its own axis, the rotating shaft (3) including a rotating shaft seat (31) and a rotating shaft cover (33) which are relatively assembled along its axial direction, the rotating contact is clamped between the rotating shaft seat (31) and the rotating shaft cover (33) and includes a rotating contact portion arranged on both radial sides of the rotating shaft (3) for cooperating with the movable contact (4); the rotating shaft (3) also includes a plug portion (3p) arranged at one axial end thereof, the plug portion (3p) including a main plug (33-2) and a The auxiliary plug (31-1) and the main plug (33-2) are arranged on the side of the rotating shaft cover (33) away from the rotating shaft seat (31), and the auxiliary plug (31-1) is arranged on the side of the rotating shaft seat (31) facing the rotating shaft cover (33). The auxiliary plug (31-1) passes through the rotating shaft cover hole (33-1) of the rotating shaft cover (33) and is arranged side by side with the main plug (33-2); the rotating shaft (3) also includes a socket part (3g) arranged on the other axial end thereof, and the socket part (3g) is adapted to the plug part (3p).

15. A switch electrical device, characterized in that: The switching device comprises the contact system according to any one of claims 1-14.

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