Contact system and switching device

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to a contact system and a switching electric appliance comprising the contact system, 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 at least one main contact part, the movable contact structure comprises a movable contact, and the main contact part comprises at least one main contact part. The movable contact comprises a movable contact part; the main contact part and the movable contact part are matched in an inserting manner to enable the main contact and the movable contact to be closed; the contact system and the switching device are simple in structure and reliable in contact.

Description

Technical Field

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

[0002] The contact system of existing switch electrical appliances is mostly realized by the cooperation of a moving contact and a stationary contact. The moving contact rotates or moves as a whole to close and disconnect with the stationary contact to conduct and disconnect the circuit in which the switch electrical appliance is located. Among them, the breaking speed of the moving contact and the stationary 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 mostly used to increase the action speed of the moving contact to increase the breaking speed of the moving and stationary contacts. However, due to the limitations of structural strength and space, the effect is poor. Summary of the invention

[0003] The object of the present invention is to overcome at least one defect of the prior art and to provide a contact system and a switch electrical device with a simple structure and reliable contact.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A contact system, comprising a main contact structure and at least one group of movable contact structures, the main contact structure comprising a main contact, the main contact comprising at least one main contact portion, the movable contact structure comprising a movable contact, the movable contact comprising a movable contact portion;

[0006] The main contact portion and the movable contact portion are plugged and matched to close the main contact and the movable contact.

[0007] Furthermore, the contact system also includes at least one group 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 wall of the socket to combine the main contact part and the movable contact part.

[0008] Furthermore, the main contact part is a plug plate, the cross section of the movable contact part is a U-shaped structure, and a socket is formed in the middle of the U-shaped structure.

[0009] Further, the main contact part is provided with a plug plate and a socket, which are a movable plug plate and a movable socket, and at least one side wall of the movable socket serves as a movable plug plate; the movable contact part is provided with a plug plate and a socket, which are a static plug plate and a static socket, and at least one side wall of the static socket serves as a static plug plate;

[0010] The main contact part and the movable contact part are plugged together, the movable plug plate is inserted into the static plug port, the static plug plate is inserted into the movable plug port, and the side walls of the movable plug port and the static plug port are alternately arranged.

[0011] Furthermore, the movable contact structure also includes an elastic member cooperating with the movable contact;

[0012] 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.

[0013] Furthermore, the main contact moves from the closed position to the intermediate position, and at the same time, the main contact part drives the movable contact part to move from the initial position to the disengaged position; during the movement of the main contact from the intermediate position to the disconnected position, the elastic member releases energy and drives the movable contact part to reset from the disengaged position to the initial position, and the movable contact part moves away from the movable contact part in opposite directions.

[0014] Furthermore, the elastic member is a spring or a spring.

[0015] Furthermore, the main contact structure is rotatably arranged or integrally movable arranged.

[0016] Furthermore, the movable contact is rotatably arranged or integrally movable arranged.

[0017] Furthermore, the main contact structure is pivotally arranged; the middle part of the movable contact is pivotally arranged, one end of which is provided with a movable contact part, and the other end cooperates with an elastic member; the movable contact rotates to switch the movable contact part between an initial position and a disengaged position.

[0018] Furthermore, the elastic member is a compression spring, and when the movable contact portion is in the initial position, the compression spring causes the movable contact to abut against a fixed positioning stop, and the positioning stop and the compression spring are located on the same side of the movable contact.

[0019] Furthermore, the main contact structure is pivotally arranged, and the movable contact is integrally movable, and the movable contact integrally moves to switch the movable contact portion between an initial position and a disengaged position.

[0020] Furthermore, the movable contact is arranged to be translated along the extension direction of the fixed guide rail structure, the elastic member is a tension spring, and the positioning stop and the tension spring are located on the same side of the movable contact; when the movable contact portion is in the initial position, the tension spring causes the movable contact to abut against the fixed positioning stop and cooperate with the guide rail structure to limit the position.

[0021] A switching device comprises the contact system.

[0022] The contact system of the present invention realizes combination of the main contact part and the movable contact part by plugging, has a simple structure and reliable contact.

[0023] In addition, in the contact system of the present invention, after the main contact portion drives the movable contact portion to move to the disengaged position, the main contact continues to move, and the elastic member drives the movable contact portion to quickly reset to the initial position. At this time, the main contact portion and the movable contact portion generally move in opposite directions, so that the distance between the main contact portion and the movable contact portion is rapidly increased, and the arc generated by the disconnection of the main contact and the movable contact can be rapidly lengthened, which can significantly improve the arc extinguishing ability and breaking ability of the contact system and realize rapid opening.

[0024] The switch electrical appliance of the present invention comprises the contact system and has a strong breaking capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is pivotally arranged, the movable contact and the movable contact are in the disconnected state, and the plug-in structure adopts the first arrangement mode;

[0026] Figure 2 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is pivotally arranged, the main contact and the movable contact are in a closed state, and the plug-in structure adopts the first arrangement mode;

[0027] Figure 3 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is pivotally arranged, the main contact part drives the movable contact part to move to the disengaged position, and the plug-in structure adopts the first arrangement mode;

[0028] Figure 4 The present invention Figure 1-3 A schematic diagram of the structure of the main contact structure in FIG. 1 , wherein the main contact portion is a plug plate;

[0029] Figure 5 The present invention Figure 4 A schematic diagram of the structure of the main contact of the main contact structure;

[0030] Figure 6 The present invention Figure 1-3 A schematic diagram of the structure of the movable contact in FIG. 1 , wherein the cross section thereof is a U-shaped structure;

[0031] Figure 7 : is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is pivotally arranged, the main contact and the movable contact are in a closed state, and the plug-in structure adopts the second arrangement mode;

[0032] Figure 8 The present invention Figure 7 A schematic diagram of the structure of the main contact structure in FIG.

[0033] Fig. 9 The present invention Figure 7 A schematic diagram of the structure of the movable contact in FIG.

[0034] Fig.10 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is moved as a whole, the main contact and the movable contact are in a closed state, and the plug-in structure adopts the first setting mode;

[0035] Fig.11 It is a three-dimensional structural diagram of the switch electrical apparatus of the present invention, the main contact and the movable contact of the contact system thereof adopt the mode B, the movable contact is arranged to move as a whole, the main contact and the movable contact are in a closed state, and the plug-in structure adopts the first setting mode;

[0036] Fig.12 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is arranged to move as a whole, the main contact part drives the movable contact part to move to the disengaged position, and the plug-in structure adopts the first setting mode;

[0037] Fig.13 It is a schematic diagram of the structure of the switch electrical appliance of the present invention, the main contact and the movable contact of the contact system adopt the mode B, the movable contact is moved as a whole, the main contact and the movable contact are in the disconnected state, and the plug-in structure adopts the first setting mode;

[0038] Fig.14 The present invention Figure 10-13 A schematic diagram of the structure of the movable contact in FIG.

[0039] Fig.15 is a structural schematic diagram of a movable contact structure of a plug-in structure adopting a third setting mode of the present invention;

[0040] Fig.16 is a schematic structural diagram of the main contacts of the plug-in structure of the present invention using the third setting mode;

[0041] Fig.17 is a structural schematic diagram of a movable contact structure of a plug-in structure adopting a fourth setting mode of the present invention;

[0042] Fig.18 It is a schematic structural diagram of the main contacts of the plug-in structure of the present invention using the fourth setting mode.

[0043] Description of Reference Numerals

[0044] 1 housing;

[0045] 1-0 positioning stop; g guide rail structure; 1-1 track groove; 1-2 track wall;

[0046] m Main contact structure;

[0047] 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;

[0048] 3 main axis;

[0049] s movable contact structure;

[0050] 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;

[0051] 5 movable contact shaft;

[0052] 6 elastic member;

[0053] c socket;

[0054] 7. Soft connection;

[0055] 8 terminals;

[0056] 9 spring fixed shaft; DETAILED DESCRIPTION

[0057] The following is a further description of the specific implementation of the switch device of the present invention in conjunction with the embodiments given in the accompanying drawings. The switch device of the present invention is not limited to the description of the following embodiments.

[0058] The switch 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 switch device is located. Further, the switch 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. Further, the switch device also includes a housing 1 for accommodating the contact system. Further, when the switch device of the present invention is a rotary isolating switch, the housing 1 is the housing of the switch unit of the rotary isolating switch; or, when the switch device of the present invention is a circuit breaker, the housing 1 is the circuit breaker housing; or, when the switch device of the present invention is a transfer switch, the housing 1 is the transfer switch housing.

[0059] like Figure 1-3As shown in Figures 7, 11-14, the main contact structure m includes a main contact 2, which includes at least one main contact portion 2-0, and 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 combines 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, and at the same time, the movable contact 4 causes the elastic member 6 to store energy, and the main contact 2 continues to move, then the movable contact portion 4-1 is disengaged from the main contact portion 2-0 and the elastic member 6 releases energy to drive the movable contact portion 4-1 to reset to the initial position; that is: during the movement of the main contact 2 from the closed position to the disconnected position (also during the movement of the main contact structure m from the closed position to the disconnected position), the main contact portion 2-0 moves from the closed position to the intermediate position and drives the movable contact portion 4-1 from the initial position to the intermediate position. The main contact 2 moves from the initial position to the disengaged position, and 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 disconnecting position, and the movable contact part 4-1 is disengaged from the main contact part 2-0, and the elastic member 6 releases energy to drive the movable contact part 4-1 to return to the initial position (that is, the elastic member 6 drives the movable contact part 4-1 to move away from the main contact part 2-0, and the movement directions of the movable contact part 4-1 and the main contact part 2-0 are substantially opposite. At the same time, the movable contact part 4-1 is reset to the initial position from the disengaged position, and the movable contact part 4-1 and the main contact part 2-0 move in opposite directions and move away from each other), and at the same time, the main contact 2 continues to move to the disconnecting position. In the contact system, after the main contact part 2-0 drives the movable contact part 4-1 to move to the disengaged position, the main contact 2 continues to move, and the elastic member 6 drives the movable contact part 4-1 to quickly reset to the initial position. At this time, the main contact part 2-0 and the movable contact part 4-1 generally move in opposite directions, so that the distance between the main contact part 2-0 and the movable contact part 4-1 is quickly enlarged, and the arc generated by the disconnection of the main contact 2 and the movable contact 4 can be quickly lengthened, which can significantly improve the arc extinguishing ability and disconnecting ability of the contact system and realize rapid disconnection. It should be pointed out that in the process of the main contact part 2-0 driving the movable contact part 4-1 to move from the initial position to the disengaged position, the main contact part 2-0 and the movable contact part 4-1 do not remain relatively still, and the two move and / or rotate relative to each other until the main contact part 2-0 can no longer drive the movable contact part 4-1 to continue to move and the elastic member 6 further stores energy.When the main contact 2 and the movable contact 4 are in the closed state, or when the main contact 2 and the movable contact 4 are disconnected and the movable contact 4 is in the static state, the position of the movable contact part 4-1 is the initial position; the position farthest from the initial position that the movable contact part 4-1 can move to under the drive of the main contact part 2-0 is the disengaged position, and when the movable contact part 4-1 moves to the disengaged position, the movable contact 4 makes the elastic member 6 store energy to the maximum value. The position of the main contact 2 and the movable contact 4 in the closed state is the closed position, the final position where the main contact 2 and the movable contact 4 remain static after being disconnected is the disconnected position, and the intermediate position is a position that the main contact 2 passes through during the process of moving from the closed position to the disconnected position.

[0060] like Figure 1-3 As shown in , 7, 10-13, the contact system also includes a wiring terminal 8, which matches the movable contact 4 one-to-one, and the movable contact 4 is electrically connected to the wiring terminal 8 through a flexible connection 7.

[0061] As another embodiment, the movable contact 4 is electrically connected to the connection terminal 8 through a hard connection.

[0062] Specifically, in the contact system, the main contact 2 and the movable contact 4 have at least the following three configurations:

[0063] 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 a closed position and a disconnected position, so that the main contact portion 2-0 is combined with and disengaged from the movable contact portion 4-1.

[0064] Mode B: The contact system is provided with a group of moving 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 (main contact structure m) is actuated to switch between the closed position and the disconnected position, so that the two main contact parts 2-0 are respectively combined with and disengaged from the two movable contact parts 4-1. When the two main contact parts 2-0 are respectively combined with the two movable contact parts 4-1, the three are in a series state.

[0065] Specifically, Figure 1-2As shown in , 7, 10-13, the main contact 2 includes two main contact parts 2-0 respectively arranged at both ends thereof, and the contact system includes two groups of movable contact structures s, which are respectively arranged on both sides of the main contact structure m, and the two groups of main contact parts 2-0 are respectively used to close and disconnect with the movable contact parts 4-1 of the two groups of movable contacts 4. The contact system adopts a double breakpoint structure, which is conducive to further improving its breaking capacity and arc extinguishing capacity. Furthermore, the two groups of movable contacts 4 are electrically connected to the two groups of terminal blocks 8 through two flexible connections 7.

[0066] Mode C: The contact system is provided with a group of moving 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 is actuated and switched between two working positions (the two working positions are respectively a closed position and a disconnected position relative to any one of the movable contacts 4) 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 (the main contact 2 is closed with one movable contact 4), it is disengaged from the other movable contact portion 4-1 (the main contact 2 is disconnected from the other movable contact 4).

[0067] The contact systems of types A and B are preferably used in rotary disconnectors, circuit breakers, etc.

[0068] The contact system of type C is preferably used in a changeover switch.

[0069] Furthermore, the main contact structure m is pivotally arranged or integrally movable.

[0070] Furthermore, the movable contact 4 is pivotally arranged or integrally movable.

[0071] Specifically, the movement modes of the main contact structure m and the movable contact structure s have the following four settings:

[0072] 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 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 (main contact 2) rotates from the closed position to the disconnected position, the main contact structure m (main contact 2) rotates 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 The movable contact 4 rotates to rotate the movable contact part 4-1 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 (main contact 2) continues to rotate to the disconnecting position. The movable contact part 4-1 rotates in opposite directions to the main contact part 2-0.

[0073] The following is an embodiment of method 1:

[0074] like Figure 1-3 As shown in FIG. 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 make the main contact portion 2-0 engage and disengage with the movable contact portion 4-1, that is, to make the main contact 2 and the movable contact 4 close and disconnect.

[0075] like Figure 1-3 As shown in FIG. 7 , the movable contact 4 is pivotally arranged in the middle, one end of which is provided with a movable contact portion 4-1, and the other end is matched with an elastic member 6. Further, 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.

[0076] like Figure 1-3 As shown in Figures 7 and 8, 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 two 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 housing 1.

[0077] like Figure 1-3 As shown in FIG. 7 , the movable contact structure s further includes a fixed movable contact shaft 5, and the movable contact 4 is pivotally arranged via the movable contact shaft 5. Further, 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.

[0078] like Figure 1-3As shown in FIGS. 7 and 8 , the elastic member 6 is a compression spring, and the elastic member 6 acts on the movable contact 4 to make one end of the movable contact portion 4-1 abut against the positioning stop 1-0, that is, to keep the movable contact portion 4-1 in the initial position, and 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.

[0079] 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 setting position of the elastic member 6 can be adjusted by those skilled in the art according to actual needs, and the possible setting positions of the elastic member 6 are not listed one by one here.

[0080] As another embodiment, the positioning 1-0 is cancelled, and the movable contact shaft 5 is provided with a shaft limiting surface, and a hole limiting surface is provided in the movable contact shaft hole 4-2 of the movable contact 4, and the elastic member 6 acts on the movable contact 4 to make the hole limiting surface cooperate with the shaft limiting surface, so as to position the movable contact 4 in the initial position. The hole limiting surface and the shaft limiting surface can be realized by the 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 member 6, which will not be described one by one here, but they all fall within the protection scope of this application.

[0081] Specifically, Figure 1-3 As shown in , 7, the main contact 2 includes two main contact parts 2-0 respectively arranged at both ends thereof, and two groups of movable contacts 4 are respectively pivotally arranged on the radial sides of the main contact structure m. The main contact structure m (main contact 2) rotates to switch between the closed position and the disconnected position, so that the two main contact parts 2-0 are combined with and disengaged from the movable contact parts 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.

[0082] Mode 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 (main contact 2) 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 is disengaged 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 (main contact 2) continues to rotate to the disconnected position.

[0083] The following is an embodiment of method 2:

[0084] like Figure 10-13 As shown, the main contact structure m is pivotally arranged, and the movable contact 4 is integrally movable on a preset plane. The main contact structure m rotates to make the main contact portion 2-0 engage and disengage with the movable contact portion 4-1, that is, to make the main contact 2 and the movable contact 4 closed and disconnected.

[0085] like Figure 10-13 As shown, 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.

[0086] like Figure 10-13 As shown, the elastic member 6 is a tension spring, and the elastic member 6 and the main contact portion 2-0 are respectively located on both sides of the movable contact 4. Further, the movable contact 4 includes a movable contact hanging spring portion 4-5, one end of the elastic member 6 is hung on the movable contact hanging spring portion 4-5, and the other end is fixedly arranged. Further, one end of the elastic member 6 that is fixedly arranged is fixed to the housing 1 through a spring fixing shaft 9. Further, the geometric axis of the elastic member 6 coincides with the extension path of the guide rail structure g.

[0087] like Figure 10-13As shown, 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, 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 1-2, 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, so as to ensure that the movable contact 4 can slide reliably and stably along the extension direction of the guide rail structure g. Further, the movable contact portion 4-1 and the guide plate 4-4 are respectively located on both sides of the movable contact shaft 5 in the radial direction, 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 provided in the middle of the movable contact 4.

[0088] like Figure 10-13 As shown, the elastic member 6 is a tension spring, and the elastic member 6 acts on the movable contact 4 to make it abut against the positioning stop 1-0, so that the movable contact portion 4-1 of the movable contact 4 is kept in the initial position, and the positioning stop 1-0 and the elastic member 6 are located on the same side of the movable contact 4. Further, the positioning stop 1-0 is a stop rib arranged on the housing 1-0.

[0089] 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 setting position of the elastic member 6 can be adjusted by those skilled in the art according to actual needs, and the possible setting positions of the elastic member 6 are not listed one by one here.

[0090] 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.

[0091] 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 rotating contact structure m, the main contact 2 can also be called a rotating contact 2, and the main contact portion 2-0 can also be called a rotating contact portion 2-0.

[0092] Mode 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 the opposite directions 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; when the main contact structure m moves from the closed position to the disconnected position, the main contact structure m (main contact 2) moves from the closed position to the intermediate position and the main contact part 2-0 drives the movable contact 4 to move as a whole from the initial position to the disengaged position 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 (main contact 2) continues to move to the disconnected position, and the moving directions of the main contact part 2-0 and the movable contact part 4-1 are opposite.

[0093] Mode 4: The main contact structure m is integrally moved and arranged on a preset plane, and the movable contact 4 is pivotally arranged; the main contact structure m is integrally moved to approach and move away from the movable contact 4, so that the main contact portion 2-0 and the movable contact portion 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 integrally from the closed position to the intermediate position and the main contact portion 2-0 drives the movable contact Part 4-1 rotates around the rotation center of the movable contact 4 to rotate the entire movable contact 4. 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. The main contact structure m continues to move from the middle position to the disconnecting position to disengage the main contact part 2-0 from the movable contact part 4-1. 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. The main contact structure m (main contact 2) continues to move to the disconnecting position.

[0094] In the switch electrical apparatus of the present invention, the movement mode of the main contact structure m and the movable contact structure s of the contact system thereof preferably adopts mode 1 or mode 2. Further, in the mode 1 and mode 2, the main contact structure m also includes a pivotally arranged main shaft 3, the main contact structure m is pivotally arranged by the main shaft 3, the main contact 2 is inserted in the main shaft 3, and the main contact portion 2-0 protrudes on one radial side of the main shaft 3.

[0095] like Figure 1-18As shown, the main contact part 2-0 and the movable contact part 4-1 are plugged together to realize the combination of the main contact part 2-0 and the movable contact part 4-1. The structure is simple and the contact is reliable, which is conducive to simplifying the structure. Further, the contact system also includes at least one group of plug-in structures, and the plug-in structure includes a plug-in plate and a socket c, one is arranged on the main contact part 2-0, and the other is arranged on the movable contact part 4-1. The plug-in plate device is clamped by the inner wall of the socket c in the socket, so that the main contact part 2-0 and the movable contact part 4-1 are combined. Further, the main contact 2 includes two main contact parts 2-0 respectively arranged at both ends thereof, and the two main contact parts 2-0 cooperate with the movable contact parts 4-1 of the two groups of movable contacts 4.

[0096] Specifically, the main contact part 2-0 and the movable contact part 4-1 are plug-fitted through a set of plug-in structures:

[0097] like Figure 1-6 As shown, the first arrangement of the plug-in structure is as follows: the main contact portion 2-0 is a plug plate, the cross section of the movable contact portion 4-1 is a U-shaped structure, a socket c is formed in the middle of the U-shaped structure, and the plug plate is inserted into the socket. Furthermore, the movable contact 4 is formed by bending a metal sheet to form a U-shaped structure in the cross section of the movable contact portion 4-1.

[0098] like Figure 7-9 As shown, it is a second arrangement mode of the plug-in structure: the main contact part 2-0 includes two main contact blades 2-1 arranged opposite to each other, and a socket c is formed between the two main contact blades 2-1, and the movable contact part 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, and main contact blades 2-1 are provided at both ends of the first main contact plate 2a and the second main contact plate 2b.

[0099] Specifically, the main contact part 2-0 and the movable contact part 4-1 are plugged and matched through multiple groups of plug-in structures. Further, the main contact part 2-0 is provided with a plug plate and a socket c, which are a movable plug plate and a movable socket, and at least one side wall of the movable socket serves as a movable plug plate; the movable contact part 4-1 is provided with a plug plate and a socket c, which are a static plug plate and a static socket, and at least one side wall of the static socket serves as a static plug plate; the main contact part 2-0 and the movable contact part 4-1 are plugged and matched, the dynamic plug plate is inserted into the static socket, the static plug plate is inserted into the dynamic socket, and the side walls of the dynamic socket and the static socket are alternately arranged:

[0100] like Figure 15-16As shown, it is the third setting mode of the plug-in structure: the main contact part 2-0 includes two main contact blades 2-1 arranged opposite to each other, the two main contact blades 2-1 serve as two movable plug plates and a movable socket is formed between the two; the movable contact part 4-1 includes two static plug ports, and the side wall between the two static plug ports serves as a static plug plate; when the main contact part 2-0 is combined with the movable contact part 4-1, the two main contact blades 2-1 are respectively inserted into the two static plug ports, the static plug plates are inserted into the movable plug ports, and the two side walls on both sides of the two static plug ports are clamped on 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, and main contact blades 2-1 are provided at both ends of the first main contact plate 2a and the second main contact plate 2b.

[0101] like Figure 17-18 As shown, it 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, a movable socket is formed between two adjacent main contact blades 2-1, and the main contact blade 2-1 located in the middle serves as a movable plug plate; the cross section of the movable contact part 4-1 is a U-shaped structure, the middle of the U-shaped structure forms a socket c, which is a static socket, and the side walls on both sides of the static contact are static plug plates; when the main contact part 2-0 and the movable contact part 4-1 are combined, one dynamic plug plate is inserted into the static socket, two static plug plates are inserted into two movable sockets, 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 in sequence, namely the first main contact plate 2a, the third main contact plate 2c and the second main contact plate 2b, and the main contact blades 2-1 are provided at both ends of the three, and the main contact blade 2-1 of the second main contact plate 2c serves as a movable plug plate.

[0102] It should be pointed out that the main contact part 2-0 and the movable contact part 4-1 are not limited to plug-in matching to achieve the combination of the two. For example, the main contact part 2-0 and the movable contact part 4-1 can also be matched through a snap-on structure, and the snap-on structure includes a first structure and a second structure for matching. The first structure and the second structure of the snap-on match release the snap-on match when being pulled by a predetermined external force. For example, the first structure and the second structure are two semi-arrow-shaped hooks for matching; or, the first structure is two elastic clamping arms arranged on the movable contact part 4-1, each elastic clamping arm is a >-shaped structure, and the tips of the >-shaped structures of the two elastic clamping arms are opposite; the second structure is two protrusions arranged on the main contact part 2-0. When the main contact 2 and the movable contact 4 are closed, the two protrusions enter between the free ends of the two elastic clamping arms, 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.

[0103] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0104] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A contact system, comprising a main contact structure (m) and at least one group of movable contact structures (s), the main contact structure (m) comprising a main contact (2), the main contact (2) comprising at least one main contact portion (2-0), the movable contact structure (s) comprising a movable contact (4), the movable contact (4) comprising a movable contact portion (4-1); Features: The main contact part (2-0) and the movable contact part (4-1) are plugged together to close the main contact (2) and the movable contact (4).

2. The contact system according to claim 1, 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.

3. The contact system according to claim 2, characterized in that: 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.

4. The contact system according to claim 2, characterized in that: The main contact part (2-0) is provided with a plug plate and a socket (c), which are a movable plug plate and a movable socket, and at least one side wall of the movable socket serves as a movable plug plate; the movable contact part (4-1) is provided with a plug plate and a socket (c), which are a static plug plate and a static socket, and at least one side wall of the static socket serves as a static plug plate; The main contact part (2-0) and the movable contact part (4-1) are plugged together, the movable plug board is inserted into the static plug port, the static plug board is inserted into the movable plug port, and the side walls of the movable plug port and the static plug port are alternately arranged.

5. The contact system according to claim 1, characterized in that: 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.

6. The contact system according to claim 5, characterized in that: The main contact (2) moves from the closed position to the intermediate position, and at the same time drives the movable contact part (4-1) to move from the initial position to the disengaged position through the main contact part (2-0); during the movement of the main contact (2) from the intermediate position to the disconnected position, the elastic member (6) releases energy to drive the movable contact part (4) to return from the disengaged position to the initial position, and the movable contact part (2-0) and the movable contact part (4-1) move in opposite directions and move away from each other.

7. The contact system according to claim 5, characterized in that: The elastic member (6) is a spring or a spring sheet.

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

9. The contact system according to claim 1, characterized in that: The movable contact (4) is arranged to rotate or move as a whole; The main contact structure (m) is pivotally arranged; the middle part of the movable contact (4) is pivotally arranged, one end of which is provided with a movable contact part (4-1), and the other end is matched with an elastic member (6); the movable contact (4) rotates to switch the movable contact part (4-1) between an initial position and a disengaged position; The elastic member (6) is a compression spring, and when the movable contact portion (4-1) is in the initial position, the compression spring causes the movable contact (4) to abut against a fixed positioning stop (1-0), and the positioning stop (1-0) and the compression spring are located on the same side of the movable contact (4); The main contact structure (m) is pivotally arranged, the movable contact (4) is integrally movable, and the movable contact (4) is integrally movable to switch the movable contact portion (4-1) between an initial position and a disengaged position; The movable contact (4) is arranged to be displaced along the extension direction of the fixed guide rail structure (g); the elastic member (6) is a tension spring; the positioning stop (1-0) and the tension spring are located on the same side of the movable contact (4); when the movable contact portion (4-1) is in the initial position, the tension spring causes the movable contact (4) to abut against the fixed positioning stop (1-0) and to cooperate with the guide rail structure (g) in a limiting manner.

10. A switch electrical device, characterized in that: The switching device comprises the contact system according to any one of claims 1-9.

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