Contact system and switchgear

Abstract

The application relates to the field of low-voltage electrical apparatus, in particular to a contact system and a switch electrical apparatus comprising the same, the contact system comprising a pivotally arranged rotary contact structure and at least one movable contact structure, the rotary contact structure comprising a rotary contact, the rotary contact comprising a rotary contact part, the movable contact structure comprising a movable contact, the movable contact comprising a movable contact part, the rotary contact part and the movable contact part being combined to make the rotary contact and the movable contact closed when the rotary contact is in a closed position; the movable contact structure further comprising an elastic member matched with the movable contact; during the breaking process of the rotary contact and the movable contact, the elastic member stores energy when the rotary contact part drives the movable contact part to move from an initial position to a disengagement position, the rotary contact continues to rotate, the elastic member releases energy to drive the movable contact part to reset to the initial position; the contact system and the switch electrical apparatus have high breaking capacity.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a contact system and a switching device including the contact system. Background Technology

[0002] Existing switching devices mostly employ a combination of moving and stationary contacts in their contact systems. The moving contact rotates or moves as a whole to close and open with the stationary contact, thereby connecting and disconnecting the circuit in which the switching device is located. The breaking speed of the moving and stationary contacts is a crucial factor affecting the breaking capacity of the contact system. Currently, increasing the energy storage of the operating mechanism is often used to improve the operating speed of the moving contact, thereby increasing the breaking speed of both the moving and stationary contacts. However, this method is limited by structural strength and space constraints, resulting in poor effectiveness. Summary of the Invention

[0003] The purpose of this invention is to overcome at least one defect of the prior art and provide a contact system and switching device with strong breaking capacity.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A contact system includes a pivotally mounted rotary contact structure and at least one set of movable contact structures. The rotary contact structure includes a rotary contact and a rotary contact portion. The movable contact structure includes a movable contact and a movable contact portion. When the rotary contact is in a closed position, the rotary contact portion and the movable contact portion engage to close the rotary contact and the movable contact.

[0006] The movable contact structure also includes an elastic element that cooperates with the movable contact;

[0007] During the separation process between the rotating contact and the movable contact, when the rotating contact drives the movable contact from the initial position to the disengaged position, the elastic element stores energy, the rotating contact continues to rotate, and the elastic element releases energy to drive the movable contact to reset to the initial position.

[0008] Furthermore, the contact system includes two sets of movable contact structures. The rotating contact includes two rotating contact portions respectively disposed at its two ends. When the rotating contact is in the closed position, the two rotating contact portions respectively engage with the two movable contact portions to close the rotating contact with the movable contact.

[0009] Furthermore, as the rotating contact rotates from the closed position to the middle position, it simultaneously drives the movable contact part to move from the initial position to the disengaged position; during the process of the rotating contact rotating from the middle position to the broken position, the movable contact part moves from the disengaged position to the initial position, and the rotating contact part and the movable contact part move away from each other.

[0010] Furthermore, the movable contact is pivotally mounted in the middle, with a movable contact portion at one end and a spring element engaging at the other end; the movable contact rotates to switch the movable contact portion between the initial position and the disengaged position.

[0011] Furthermore, the elastic element is a compression spring, and the elastic element and the rotating contact part are located on both sides of the movable contact.

[0012] Furthermore, the elastic element acts on the movable contact so that one end of the movable contact portion abuts against the fixed positioning stop, and the positioning stop and the elastic element are located on the same side of the movable contact.

[0013] Furthermore, the movable contact is moved as a whole within a preset plane, and the movement of the movable contact as a whole causes the movable contact part to switch between an initial position and a disengaged position.

[0014] Furthermore, the movable contact structure also includes a guide rail structure, and the movable contact is moved as a whole along the extension direction of the guide rail structure.

[0015] Furthermore, the guide rail structure is a linear guide rail structure or an arc-shaped guide rail structure.

[0016] Furthermore, the elastic element is a tension spring, and the elastic element and the rotating contact part are located on both sides of the movable contact.

[0017] Furthermore, the movable contact also includes a fixed positioning stop, the positioning stop and the elastic element are located on the same side of the movable contact, and the elastic element acts on the movable contact to make it abut against the positioning stop.

[0018] Furthermore, the movable contact structure also includes a fixedly installed movable contact shaft. The movable contact includes a guide plate, and the guide rail structure includes a guide rail wall and a guide rail groove formed between two guide rail walls. The movable contact shaft is slidably inserted into the guide rail groove, and the guide plate and the movable contact shaft are respectively located on both sides of one guide rail wall.

[0019] Furthermore, the movable contact portion and the guide plate are located on the radial sides of the movable contact shaft, respectively.

[0020] Furthermore, the movable contact shaft and the guide plate respectively slide in contact with the two sides of the corresponding guide rail wall.

[0021] Furthermore, the rotating contact structure also includes a pivotally mounted rotating shaft, in which the rotating contact is inserted and with both ends protruding radially from the rotating shaft.

[0022] Furthermore, the two sets of movable contact structures are mutually symmetrical about the rotation center of the rotating contact structure.

[0023] A switching device comprising the aforementioned contact system.

[0024] Furthermore, the switching device includes multiple switching units arranged side by side along the axis of rotation of the rotating contact structure. Each switching unit is provided with a set of contact systems, and the rotating contact structures of each contact system are linked together.

[0025] In the contact system of this invention, after the rotating contact part drives the movable contact part to the disengaged position, the rotating contact part continues to rotate. The elastic element releases energy and drives the movable contact part to quickly reset to the initial position. At this time, the rotating contact part and the movable contact part move in roughly opposite directions, which rapidly increases the distance between the rotating contact part and the movable contact part. This can quickly lengthen the arc generated by the breaking of the rotating contact and the movable contact, which can significantly improve the arc extinguishing capability and breaking capability of the contact system and realize rapid circuit breaking.

[0026] In addition, the rotating contact works with two sets of movable contacts to form a double-break structure, which helps to further improve the breaking capacity.

[0027] In addition, the two sets of movable contact structures adopt a centrally symmetrical structure, which helps to reduce the types of structures and lower production costs. Moreover, there is no need to distinguish between the two sets of movable contact structures during installation, which helps to improve assembly efficiency.

[0028] The present invention relates to a switching device, which includes the aforementioned contact system and has a strong breaking capacity. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and movable contact of its contact system adopt mode B. The movable contact is pivotally set, and the moving contact and movable contact are in a disconnected state. The plug-in structure adopts the first setting mode.

[0030] Figure 2 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and movable contact of its contact system adopt method B. The movable contact is pivotally set, and the main contact and movable contact are in a closed state. The plug-in structure adopts the first setting method.

[0031] Figure 3 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and the movable contact of its contact system adopt method B. The movable contact is pivotally mounted, and the main contact part drives the movable contact part to move to the disengaged position. The plug-in structure adopts the first setting method.

[0032] Figure 4 This is the present invention. Figure 1-3 The schematic diagram of the main contact structure in the diagram shows that its main contact part is a plug plate;

[0033] Figure 5 This is the present invention. Figure 4 A schematic diagram of the main contact structure in the intermediate main contact structure;

[0034] Figure 6 This is the present invention. Figure 1-3 The schematic diagram of the movable contact in the diagram shows that its cross-section is U-shaped.

[0035] Figure 7 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and movable contact of its contact system adopt method B, the movable contact is pivotally set, the main contact and movable contact are in the closed state, and the plug-in structure adopts the second setting method.

[0036] Figure 8 This is the present invention. Figure 7 A schematic diagram of the main contact structure in the diagram;

[0037] Figure 9 This is the present invention. Figure 7 A schematic diagram of the movable contact in the diagram;

[0038] Figure 10 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and movable contact of its contact system adopt method B. The movable contact is moved as a whole, and the main contact and movable contact are in a closed state. The plug-in structure adopts the first setting method.

[0039] Figure 11 This is a three-dimensional structural schematic diagram of the switchgear of the present invention. The main contact and movable contact of its contact system adopt method B. The movable contact is moved as a whole, and the main contact and movable contact are in a closed state. The plug-in structure adopts the first setting method.

[0040] Figure 12 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and the movable contact of its contact system adopt method B. The movable contact is moved as a whole. The main contact part drives the movable contact part to the disengaged position. The plug-in structure adopts the first setting method.

[0041] Figure 13 This is a schematic diagram of the structure of the switchgear of the present invention. The main contact and movable contact of its contact system adopt method B. The movable contact is moved as a whole, and the main contact and movable contact are in a disconnected state. The plug-in structure adopts the first setting method.

[0042] Figure 14 This is the present invention. Figure 10-13 A schematic diagram of the movable contact in the diagram;

[0043] Figure 15 This is a schematic diagram of the movable contact structure of the plug-in structure using the third setting method of the present invention;

[0044] Figure 16 This is a schematic diagram of the main contact of the plug-in structure using the third setting method of the present invention;

[0045] Figure 17 This is a schematic diagram of the movable contact structure of the plug-in structure using the fourth setting method of the present invention.

[0046] Figure 18 This is a schematic diagram of the main contact of the plug-in structure using the fourth setting method of the present invention.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Shell;

[0049] 1-0 Positioning stop; g guide rail structure; 1-1 Track groove; 1-2 Track wall;

[0050] m-main contact structure;

[0051] 2. Main contact; 2-0. Main contact part; 2-1. Main contact blade; 2a. First main contact plate; 2b. Second main contact plate; 2c. Third main contact plate;

[0052] 3 spindles;

[0053] S-shaped movable contact structure;

[0054] 4. Movable contact; 4-1. Movable contact part; 4-2. Movable contact shaft hole; 4-3. Movable contact limiting protrusion; 4-4. Guide plate; 4-5. Movable contact spring part;

[0055] 5. Movable contact shaft;

[0056] 6 elastic elements;

[0057] C-type connector;

[0058] 7. Soft connections;

[0059] 8 terminal blocks;

[0060] 9. Spring-fixed shaft; Detailed Implementation

[0061] The following embodiments, in conjunction with the accompanying drawings, further illustrate specific implementations of the switching device of the present invention. The switching device of the present invention is not limited to the descriptions in the following embodiments.

[0062] The present invention provides a switching device comprising a contact system, which includes a main contact structure m and at least one set of movable contact structures s. The main contact structure m and the movable contact structures s close and open to connect and disconnect the circuit in which the switching device is located. Further, the switching device includes an operating mechanism, which is tractively connected to the main contact structure m to drive the main contact structure m and the movable contact structures s to close and open. Further, the switching device includes a housing 1 for accommodating the contact system. Further, when the switching device of the present invention is a rotary disconnector, the housing 1 is the housing of the switching 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 changeover switch, the housing 1 is the changeover switch housing.

[0063] like Figure 1-3As shown in Figures 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 and the movable contact portion 4-1 engage to close the main contact 2 and the movable contact 4. Further, the movable contact structure s also includes an elastic element 6 that cooperates with the movable contact 4. During the separation process of the main contact 2 and the movable contact 4, the main contact portion 2-0 drives the movable contact portion 4-1 from its initial position to its disengaged position. Simultaneously, the movable contact 4 stores energy in the elastic element 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 element 6 releases energy, driving the movable contact portion 4-1 back to its initial position. That is, the main contact 2 moves from the closed position to the disengaged position... During the disconnection operation, the main contact 2-0 moves from the closed position to the intermediate position, which drives the movable contact 4-1 from the initial position to the disengaged position. At the same time, the movable contact 4 stores energy in the elastic element 6. When the movable contact 4-1 is in the disengaged position, the elastic element 6 stores the maximum energy. When the main contact 2 continues to move towards the disconnection position, the movable contact 4-1 disengages from the main contact 2-0 and the elastic element 6 releases energy, driving the movable contact 4-1 to reset to the initial position. At the same time, the main contact 2 continues to move towards the disconnection position. In the described contact system, after the main contact 2-0 drives the movable contact 4-1 to the disengaged position, the main contact 2 continues to operate. The elastic element 6 then drives the movable contact 4-1 to quickly return to its initial position. At this time, the main contact 2-0 and the movable contact 4-1 move in roughly opposite directions, rapidly increasing the distance between them. This quickly lengthens the arc generated by the main contact 2 and the movable contact 4, significantly improving the arc-extinguishing and breaking capabilities of the contact system, and achieving rapid tripping. It should be noted that during the process of the main contact 2-0 driving the movable contact 4-1 from the initial position to the disengaged position, the main contact 2-0 and the movable contact 4-1 do not remain relatively stationary; they move and / or rotate relative to each other until the main contact 2-0 can no longer drive the movable contact 4-1 to continue operating, allowing the elastic element 6 to further store energy. The position of the movable contact 4-1 when the main contact 2 and the movable contact 4 are in the closed state, and when the main contact 2 and the movable contact 4 are disconnected and the movable contact 4 is stationary, is the initial position. The position that the movable contact 4-1 can move to the furthest from the initial position under the action of the main contact 2-0 is the disengaged position. When the movable contact 4-1 moves to the disengaged position, the movable contact 4 causes the elastic element 6 to store energy to its maximum value. The position of the main contact 2 and the movable contact 4 when they are in the closed state is the closed position. The final position that the main contact 2 and the movable contact 4 remain stationary after they are disconnected is the broken position. The intermediate position is a position that the main contact 2 passes through during its movement from the closed position to the broken position.

[0064] like Figure 1-3 As shown in Figures 7 and 10-13, the contact system also includes a terminal block 8, which is paired with a movable contact 4 on a one-to-one basis. The movable contact 4 is electrically connected to the terminal block 8 via a flexible connection 7.

[0065] In another embodiment, the movable contact 4 is electrically connected to the terminal block 8 via a hard connection.

[0066] Specifically, in the contact system, the main contact 2 and the movable contact 4 have at least the following three configurations:

[0067] Method A: The contact system is provided with a set of main contact structures m and a set of movable contact structures s. The main contact 2 of the main contact structure m is provided with a main contact part 2-0, and the movable contact 4 of the movable contact structure s is provided with a movable contact part 4-1. The main contact 2 switches between the closed position and the open position when it moves, so that the main contact part 2-0 and the movable contact part 4-1 are engaged and disengaged.

[0068] Method B: The contact system is provided with one set of moving contact structure and two sets of movable contact structure s. The main contact structure m has two main contact parts 2-0 on its main contact 2. The movable contact 4 of each of the two sets of movable contact structures s is provided with one movable contact part 4-1. The main contact 2 switches between the closed position and the open position when it moves, so that the two main contact parts 2-0 are engaged with and disengaged from the two movable contact parts 4-1 respectively. When the two main contact parts 2-0 are engaged with the two movable contact parts 4-1 respectively, the three are in series.

[0069] Specifically, such as Figure 1-2 As shown in Figures 7 and 10-13, the main contact 2 includes two main contact portions 2-0 respectively disposed at its two ends. The contact system includes two sets of movable contact structures s, which are respectively disposed on both sides of the main contact structure m. The two sets of main contact portions 2-0 are used to close and open with the movable contact portions 4-1 of the two sets of movable contacts 4. The contact system adopts a double-break structure, which is beneficial to further improve its breaking capacity and arc extinguishing capacity. Furthermore, the two sets of movable contacts 4 are electrically connected to two sets of terminals 8 through two flexible connections 7.

[0070] Method C: The contact system is provided with one set of moving contact structures and two sets of movable contact structures s. The main contact structure m has a main contact part 2-0 on its main contact 2. The movable contact 4 of each of the two sets of movable contact structures s is provided with a movable contact part 4-1. The main contact part 2-0 switches between two working positions to engage and disengage with the two movable contact parts 4-1 respectively. That is, when the main contact part 2-0 engages with one movable contact part 4-1, it disengages from the other movable contact part 4-1.

[0071] The contact systems of methods A and B are preferably used in rotary disconnect switches, circuit breakers, etc.

[0072] The contact system of method C is preferably used in changeover switches.

[0073] Furthermore, the main contact structure m is pivotally mounted or moved as a whole.

[0074] Furthermore, the movable contact 4 is pivotally mounted or moved as a whole.

[0075] Specifically, the movement modes of the main contact structure m and the movable contact structure s have the following four configuration methods:

[0076] Method 1: The main contact structure m is pivotally mounted, and the movable contact 4 is pivotally mounted. The rotation of the main contact structure m causes the main contact portion 2-0 to engage and disengage from the movable contact portion 4-1, thus closing and opening the main contact 2 and the movable contact 4. When the main contact structure m rotates from the closed position to the open position, it rotates 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, thus opening the entire movable contact... The head 4 rotates, causing the movable contact 4-1 to rotate from the initial position to the disengaged position. At the same time, the movable contact 4 stores energy in the elastic element 6. When the movable contact 4-1 rotates to the disengaged position, the elastic element 6 stores energy to its maximum. After the main contact 2-0 disengages from the movable contact 4-1, the elastic element 6 releases energy and drives the movable contact 4-1 to rotate from the disengaged position back to the initial position. At the same time, the main contact structure m continues to rotate to the break position. The movable contact 4-1 and the main contact 2-0 rotate in opposite directions.

[0077] The following is an example of method 1:

[0078] like Figure 1-3 As shown in Figure 7, the main contact structure m is pivotally mounted, and the movable contact 4 of the movable contact structure s is pivotally mounted. The main contact structure m rotates to cause the main contact part 2-0 to engage and disengage from the movable contact part 4-1, that is, to cause the main contact 2 and the movable contact 4 to close and disconnect.

[0079] like Figure 1-3 As shown in Figures 7 and 8, the movable contact 4 is pivotally mounted in the middle, with a movable contact portion 4-1 at one end and a spring element 6 engaging with the other end. Furthermore, the spring element 6 is a compression spring, and the spring element 6 and the main contact portion 2-0 are located on opposite sides of the movable contact 4.

[0080] like Figure 1-3As shown in Figures 7 and 8, the movable contact 4 also includes a movable contact limiting protrusion 4-3. The movable contact part 4-1 and the movable contact limiting protrusion 4-3 are located at both ends of the movable contact 4, respectively. The elastic element 6 is a compression spring, one end of which is sleeved on the movable contact limiting protrusion 4-3, and the other end is set on the housing 1.

[0081] like Figure 1-3 As shown in Figures 7 and 8, the movable contact structure s further includes a fixedly mounted movable contact shaft 5, and the movable contact 4 is pivotally mounted via the movable contact shaft 5. Further, the movable contact shaft 5 is fixedly mounted on the housing 1, and the movable contact 4 is provided with a movable contact shaft hole 4-2 through which the movable contact shaft 5 passes.

[0082] like Figure 1-3 As shown in Figures 7 and 8, the elastic element 6 is a compression spring. The elastic element 6 acts on the movable contact 4, causing one end of the movable contact portion 4-1 to abut against the positioning stop 1-0, that is, to keep the movable contact portion 4-1 in its initial position. The positioning stop 1-0 and the elastic element 6 are located on the same side of the movable contact 4. Further, the positioning stop 1-0 is a retaining rib provided on the housing 1.

[0083] In another embodiment, the elastic element 6 is a tension spring, and the positioning stop 1-0 and the elastic element 6 are located on both sides of the movable contact 4. It should be noted that the position of the elastic element 6 can be adjusted by those skilled in the art according to actual needs, and the possible positions of the elastic element 6 will not be listed here.

[0084] In another embodiment, the positioning 1-0 is cancelled, and instead, the movable contact shaft 5 is provided with a shaft limiting surface, and the movable contact 4 has a hole limiting surface in the movable contact shaft hole 4-2. The elastic element 6 acts on the movable contact 4 to make the hole limiting surface and the shaft limiting surface fit together, thus positioning the movable contact 4 in the initial position. The hole limiting surface and the shaft limiting surface can both be implemented by existing technology, 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 element 6, which will not be described in detail here, but all fall within the protection scope of this application.

[0085] Specifically, such as Figure 1-3As shown in Figure 7, the main contact 2 includes two main contact portions 2-0 respectively disposed at its two ends. Two sets of movable contacts 4 are pivotally disposed on both radial sides of the main contact structure m. The main contact structure m rotates and switches between a closed position and a disconnected position, causing the two main contact portions 2-0 to engage and disengage with the movable contact portions 4-1 of the two movable contacts 4. The two sets of movable contact structures s are centrally symmetrical about the rotation center of the main contact structure m. The central symmetry of the two sets of movable contact structures s helps to reduce the number of structural types, lower production costs, and eliminates the need for identification of the two sets of movable contact structures s during installation, thus improving assembly efficiency. Furthermore, the two sets of terminal blocks 8 are centrally symmetrical about the rotation center of the main contact structure m.

[0086] Method 2: The main contact structure m is pivotally mounted, and the movable contact 4 is moved as a whole on a preset plane. The main contact structure m rotates, causing the main contact part 2-0 to engage and disengage from the movable contact part 4-1, that is, causing the main contact 2 and the movable contact 4 to close and disconnect. 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 middle position and moves the movable contact 4-1 as a whole, causing the movable contact 4 to move from the initial position 1 to the disengaged position. At this time, the elastic element 6 stores energy to its maximum value. After the main contact part 2-0 disengages from the movable contact part 4-1, the elastic element 6 releases energy and drives the movable contact part 4-1 to move back to the initial position. At the same time, the main contact structure m continues to rotate to the disconnected position.

[0087] The following is an example of method 2:

[0088] like Figure 10-13 As shown, the main contact structure m is pivotally mounted, and the movable contact 4 is moved as a whole on a preset plane. The rotation of the main contact structure m causes the main contact part 2-0 to engage and disengage from the movable contact part 4-1, that is, to close and disconnect the main contact 2 and the movable contact 4.

[0089] like Figure 10-13 As shown, the movable contact 4 is integrally moved along the extension direction of the fixed guide rail structure g. Furthermore, the guide rail structure g is preferably a linear guide rail structure, and is preferably disposed on the housing 1. Of course, the guide rail structure can also be an arc-shaped guide rail structure.

[0090] like Figure 10-13As shown, the elastic element 6 is a tension spring, and the elastic element 6 and the main contact portion 2-0 are located on both sides of the movable contact 4. Further, the movable contact 4 includes a movable contact hanging spring portion 4-5, with one end of the elastic element 6 hanging on the movable contact hanging spring portion 4-5, and the other end fixedly disposed thereon. Further, the fixed end of the elastic element 6 is fixed to the housing 1 via a spring fixing shaft 9. Further, the geometric axis of the elastic element 6 coincides with the extension path of the guide rail structure g.

[0091] like Figure 10-13 As shown, the guide rail structure g includes guide rail walls 1-2 and a guide rail groove 1-1 formed between two opposing 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 into the guide rail groove 1-1. The guide plate 4-4 and the movable contact shaft 5 are respectively located on both sides of one guide rail wall 1-2. The guide plate 4-4 and the movable contact shaft 5 slide in contact with both sides of the guide rail wall 1-2, that is, the movable contact shaft 5 slides in contact with the inner side of the guide rail wall 1-2 and the guide plate 4-4 slides in cooperation with the outer side of the guide rail wall 1-2, ensuring that the movable contact 4 slides reliably and stably along the extension direction of the guide rail structure g. Furthermore, the movable contact part 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 part 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 provided in the middle of the movable contact 4.

[0092] like Figure 10-13 As shown, the elastic element 6 is a tension spring. The elastic element 6 acts on the movable contact 4, causing it to abut against the positioning stop 1-0, so that the movable contact portion 4-1 of the movable contact 4 remains in the initial position. The positioning stop 1-0 and the elastic element 6 are located on the same side of the movable contact 4. Further, the positioning stop 1-0 is a rib provided on the housing 1-0.

[0093] In another embodiment, the elastic element 6 is a compression spring, and the elastic element 6 and the positioning stop 1-0 are located on both sides of the movable contact 4. It should be noted that the setting position of the elastic element 6 can be adjusted by those skilled in the art according to actual needs, and the possible setting positions of the elastic element 6 will not be listed here.

[0094] In another embodiment, the movable contact structure s does not have a positioning stop 1-0. Instead, when the movable contact 4 is in the initial position, the elastic member 6 acts on the movable contact 4, causing the movable contact shaft 5 to abut against one end of the track structure g.

[0095] In both methods 1 and 2, the main contact structure m is pivotally mounted. Therefore, the main contact structure m can also be called the rotating contact structure m, the main contact 2 can also be called the rotating contact 2, and the main contact part 2-0 can also be called the rotating contact part 2-0.

[0096] Method 3: The main contact structure m and the movable contact 4 are both moved as a whole on a preset plane; the main contact structure m and the movable contact 4 move towards and away from each other, causing the main contact part 2-0 to engage and disengage from the movable contact part 4-1, that is, causing the main contact 2 and the movable contact 4 to close and disconnect; 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 middle position and the main contact part 2-0 drives the movable contact 4 to move from the initial position to the disengaged position through the movable contact part 4-1. At the same time, the elastic element 6 stores energy to the maximum. After the main contact part 2-0 and the movable contact part 4-1 disengage, the elastic element 6 releases energy and drives the movable contact part 4-1 to move back to the initial position. At the same time, the main contact structure m continues to move to the disconnected position, and the main contact part 2-0 and the movable contact part 4-1 move in opposite directions.

[0097] Method 4: The main contact structure m is moved as a whole on a preset plane, and the movable contact 4 is pivotally mounted; 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 engaged 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, so that the entire movable contact 4 rotates. At the same time, the movable contact 4 stores energy in the elastic element 6. When the movable contact part 4-1 rotates to the disengaged position, the elastic element 6 stores the maximum energy. The main contact structure m continues to move from the middle position to the disconnected position, so that the main contact part 2-0 and the movable contact part 4-1 are disengaged. The elastic element 6 releases energy and drives the movable contact part 4-1 to rotate in the opposite direction to reset to the initial position. The main contact structure m continues to move to the disconnected position.

[0098] In the switching device of the present invention, the movement mode of the main contact structure m and the movable contact structure s of its contact system is preferably mode 1 or mode 2. Further, in mode 1 and mode 2, the main contact structure m further includes a pivotally mounted main shaft 3, the main contact structure m is pivotally mounted via the main shaft 3, the main contact 2 is inserted in the main shaft 3 and the main contact portion 2-0 protrudes from the radial side of the main shaft 3.

[0099] like Figure 1-18As shown, the main contact 2-0 and the movable contact 4-1 are plugged into each other to achieve the combination of the main contact 2-0 and the movable contact 4-1. The structure is simple and the contact is reliable, which is beneficial to the simplification of the structure. Furthermore, the contact system also includes at least one set of plug-in structures, which include a plug plate and a socket c. One is disposed on the main contact 2-0, and the other is disposed on the movable contact 4-1. The plug plate is clamped by the inner side wall of the socket c within the socket, so that the main contact 2-0 and the movable contact 4-1 are combined. Furthermore, the main contact 2 includes two main contact parts 2-0 respectively disposed at its two ends. The two main contact parts 2-0 cooperate with the movable contact parts 4-1 of the two sets of movable contacts 4.

[0100] Specifically, the main contact part 2-0 and the movable contact part 4-1 are connected by a set of plug-in structures:

[0101] like Figure 1-6 As shown, this is the first configuration of the plug-in structure: the main contact part 2-0 is a plug plate, and the cross-section of the movable contact part 4-1 is a U-shaped structure, with a socket c formed in the middle of the U-shaped structure, into which the plug plate is inserted. Further, the movable contact 4 is formed by bending a metal sheet to create the U-shaped cross-section of the movable contact part 4-1.

[0102] like Figure 7-9 As shown, this is the second configuration of the plug-in structure: the main contact portion 2-0 includes two main contact blades 2-1 arranged opposite to each other, 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 wall of the socket c. The main contact 2 includes two main contact plates arranged in parallel and spaced apart, namely a first main contact plate 2a and a second main contact plate 2b, both ends of which are provided with main contact blades 2-1.

[0103] Specifically, the main contact portion 2-0 and the movable contact portion 4-1 are connected by multiple sets of plug-in structures. Further, the main contact portion 2-0 is provided with a plug plate and a socket c, which are movable plug plate and movable socket, with at least one sidewall 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 stationary plug plate and stationary socket, with at least one sidewall of the stationary socket serving as the stationary plug plate; the main contact portion 2-0 and the movable contact portion 4-1 are connected by a plug-in structure, with the movable plug plate inserted into the stationary socket and the stationary plug plate inserted into the movable socket, and the sidewalls of the movable and stationary sockets are alternately arranged.

[0104] like Figure 15-16As shown, this is the third configuration of the plug-in structure: 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 insert plates and forming a movable insertion port between them; the movable contact portion 4-1 includes two stationary insertion ports, the sidewall between the two stationary insertion ports serving as a stationary insert plate; when the main contact portion 2-0 and the movable contact portion 4-1 are combined, the two main contact blades 2-1 are respectively inserted into the two stationary insertion ports, the stationary insert plate is inserted into the movable insertion port, and the two sidewalls on both sides of the two stationary insertion ports are clamped to both sides of the two main contacts 2-1. Further, the main contact 2 includes two main contact plates arranged in parallel and spaced apart, namely a first main contact plate 2a and a second main contact plate 2b, both ends of the first main contact plate 2a and the second main contact plate 2b are provided with main contact blades 2-1.

[0105] like Figure 17-18 As shown, this is the fourth implementation of the plug-in structure: the main contact part 2-0 includes three main contact blades 2-1 arranged side by side at intervals, with a movable insertion port formed between two adjacent main contact blades 2-1, and the main contact blade 2-1 located in the middle serving as a movable insertion plate; the cross-section of the movable contact part 4-1 is a U-shaped structure, with an insertion port c formed in the middle of the U-shaped structure, which is a stationary insertion port, and the side walls on both sides of the stationary insertion port are stationary insertion plates; when the main contact part 2-0 and the movable contact part 4-1 are combined, one movable insertion plate is inserted into the stationary insertion port, two stationary insertion plates are inserted into the two movable insertion ports, and two main contact blades 2-1 are clamped on both sides of the movable contact part 4-1. Further, the main contact 2 includes three main contact plates arranged side by side at intervals, namely a first main contact plate 2a, a third main contact plate 2c, and a second main contact plate 2b, each with a main contact blade 2-1 at both ends, and the main contact blade 2-1 of the second main contact plate 2c serving as a movable insertion plate.

[0106] It should be noted that the main contact 2-0 and the movable contact 4-1 are not limited to a plug-in fit to achieve their connection. For example, the main contact 2-0 and the movable contact 4-1 can also be fitted together by a snap-fit ​​structure. The snap-fit ​​structure includes a first structure and a second structure that work together. The snap-fit ​​is released when the first and second structures are pulled by a predetermined external force. For example, the first and second structures are two semi-arrowhead hooks that work together; or, the first structure is two elastic locking arms provided on the movable contact 4-1, each elastic locking arm being a >-shaped structure with the tips of the >-shaped structures of the two elastic locking arms facing each other; the second structure is two protrusions provided on the main contact 2-0. When the main contact 2 and the movable contact 4 are closed, the two protrusions enter between the two elastic locking arms from between their free ends, squeeze through between the tips of the >-shaped structures of the two elastic locking arms, and enter between the other ends of the two elastic locking arms.

[0107] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0108] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A contact system comprising a pivotally mounted rotary contact structure and at least one set of movable contact structures, wherein the rotary contact structure includes a rotary contact and a rotary contact portion, and the movable contact structure includes a movable contact and a movable contact portion, wherein when the rotary contact is in a closed position, the rotary contact portion engages with the movable contact portion to close the rotary contact and the movable contact; characterized in that: The movable contact structure also includes an elastic element that cooperates with the movable contact; During the separation process between the rotating contact and the movable contact, when the rotating contact drives the movable contact from the initial position to the disengaged position, the elastic element stores energy, the rotating contact continues to rotate, and the elastic element releases energy to drive the movable contact to reset to the initial position.

2. The contact system according to claim 1, characterized in that: The contact system includes two sets of movable contact structures. The rotating contact includes two rotating contact parts respectively disposed at its two ends. When the rotating contact is in the closed position, the two rotating contact parts are respectively engaged with the two movable contact parts to close the rotating contact with the movable contact.

3. The contact system according to claim 1, characterized in that: The rotating contact rotates from the closed position to the middle position, while simultaneously driving the movable contact part to move from the initial position to the disengaged position; during the process of the rotating contact rotating from the middle position to the broken position, the movable contact part moves from the disengaged position to the initial position, and the rotating contact part and the movable contact part move away from each other.

4. The contact system according to claim 1, characterized in that: The movable contact is pivotally mounted in the middle, with a movable contact portion at one end and a spring element at the other end; the movable contact rotates to switch the movable contact portion between the initial position and the disengaged position.

5. The contact system according to claim 4, characterized in that: The elastic element is a compression spring, and the elastic element and the rotating contact part are located on both sides of the movable contact.

6. The contact system according to claim 5, characterized in that: The elastic element acts on the movable contact so that one end of the movable contact portion abuts against the fixed positioning stop, and the positioning stop and the elastic element are located on the same side of the movable contact.

7. The contact system according to claim 1, characterized in that: The movable contact is moved as a whole within a preset plane, and the movement of the movable contact as a whole causes the movable contact part to switch between an initial position and a disengaged position.

8. The contact system according to claim 7, characterized in that: The movable contact structure also includes a guide rail structure, and the movable contact is moved as a whole along the extension direction of the guide rail structure.

9. The contact system according to claim 8, characterized in that: The guide rail structure can be a linear guide rail structure or an arc-shaped guide rail structure.

10. The contact system according to claim 8, characterized in that: The elastic element is a tension spring, and the elastic element and the rotating contact part are located on both sides of the movable contact.

11. The contact system according to claim 10, characterized in that: The movable contact also includes a fixed positioning stop. The positioning stop and the elastic element are located on the same side of the movable contact, and the elastic element acts on the movable contact to make it abut against the positioning stop.

12. The contact system according to claim 8, characterized in that: 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 guide rail walls. The movable contact shaft is slidably inserted into the guide rail groove. The guide plate and the movable contact shaft are located on both sides of one guide rail wall.

13. The contact system according to claim 12, characterized in that: The movable contact and the guide plate are located on the radial sides of the movable contact shaft, respectively.

14. The contact system according to claim 12, characterized in that: The movable contact shaft and the guide plate respectively slide in contact with the two sides of the corresponding guide rail wall.

15. The contact system according to claim 2, characterized in that: The rotating contact structure also includes a pivotally mounted rotating shaft, in which the rotating contact is inserted and with both ends protruding on the radial sides of the rotating shaft.

16. The contact system according to claim 2, characterized in that: The two sets of movable contact structures are mutually symmetrical about the rotation center of the rotating contact structure.

17. A switching device, characterized in that: The switching device includes the contact system as described in any one of claims 1-16.

18. The switching device according to claim 17, characterized in that: The switching device includes multiple switching units arranged side by side along the axis of the rotating contact structure. Each switching unit is equipped with a set of contact systems, and the rotating contact structures of each contact system are linked together.

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