CN220774234U - Contact system and switching device - Google Patents

Abstract

The utility model relates to the field of low-voltage electrical appliances, in particular to a contact system and a switching electrical appliance comprising the contact system, wherein the contact system comprises a main contact structure and at least one group of movable contact structures, 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 movable contact comprises a movable contact part; the main contact part and the movable contact part are in plug-in fit 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

Contact system and switching device

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a contact system and a switching device comprising the contact system.

Background

The existing switching electric appliance is mainly realized by adopting a mode that a moving contact is matched with a fixed contact, and the moving contact rotates or integrally moves to be closed and opened with the fixed contact so as to switch on and switch off a circuit where the switching electric appliance is positioned; the breaking speed of the moving contact and the fixed contact is an important factor affecting the breaking capacity of the contact system; at present, the action speed of the moving contact is increased by increasing the energy storage mode of the operating mechanism so as to increase the breaking speed of the moving contact, but the moving contact is limited by structural strength and space and has poor effect.

Disclosure of Invention

The utility model aims to overcome at least one defect in the prior art and provides a contact system and a switching device, which have simple structure and reliable contact.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a contact system comprising a main contact structure comprising a main contact, the main contact comprising at least one main contact portion, and at least one set of movable contact structures comprising a movable contact, the movable contact comprising a movable contact portion;

the main contact part and the movable contact part are in plug-in fit to enable the main contact and the movable contact to be closed.

Further, the contact system further comprises at least one set of plug-in structures, each plug-in structure comprises a plug board and a socket, one plug-in structure is arranged on the main contact part, the other plug-in structure is arranged on the movable contact part, the plug board is inserted into the socket and clamped by the inner side wall of the socket, and the main contact part and the movable contact part are combined.

Further, the main contact part is an inserting plate, the cross section of the movable contact part is of a U-shaped structure, and a socket is formed in the middle of the U-shaped structure.

Further, the main contact part is provided with a plugboard and a jack, the plugboard and the jack are movable plugboards and movable jacks, and at least one side wall of each movable jack is used as a movable plugboard; the movable contact part is provided with a plugboard and a socket, and is a static plugboard and a static socket, and at least one side wall of the static socket is used as the static plugboard;

the main contact part is in plug-in fit with the movable contact part, the movable plug board is inserted into the static plug socket, the static plug board is inserted into the movable plug socket, and the side walls of the movable plug socket and the side walls of the static plug socket are alternately arranged.

Further, the movable contact structure further comprises an elastic piece matched with the movable contact;

in the breaking process of 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 disengaging position, the elastic element stores energy, the main contact continues to move, and the elastic element releases energy to drive the movable contact part to reset to the initial position.

Further, the main contact moves from a closing position to an intermediate position, and simultaneously the main contact drives the movable contact to move from an initial position to a disengaging position; in the process that the main contact moves from the intermediate position to the disconnection position, the elastic piece releases energy to drive the movable contact part to return to the initial position from the disconnection position, and the main contact part and the movable contact part move away from each other in a way of moving away from each other

Further, the elastic piece is a spring or a shrapnel.

Further, the main contact structure is rotatably arranged or integrally movably arranged.

Further, the movable contact is rotatably arranged or integrally movably arranged.

Further, the main contact structure is pivotally arranged; the middle part of the movable contact is pivoted, one end of the movable contact is provided with a movable contact part, and the other end of the movable contact is matched with the elastic piece; the movable contact rotates to switch the movable contact portion between an initial position and a disengaged position.

Further, the elastic piece is a pressure spring, when the movable contact part is at the initial position, the pressure spring enables the movable contact to be abutted against a fixed positioning baffle, and the positioning baffle and the pressure spring are located on the same side of the movable contact.

Further, the main contact structure is pivotally arranged, the movable contact is integrally moved, and the movable contact is integrally moved to switch the movable contact portion between the initial position and the disengaged position.

Further, the movable contact is arranged in a translational manner along the extending direction of the fixedly arranged guide rail structure, the elastic piece is a tension spring, and the positioning block and the tension spring are positioned on the same side of the movable contact; when the movable contact part is at the initial position, the tension spring enables the movable contact to lean against the fixed positioning block and to lean against and be in limit fit with the guide rail structure.

A switching device comprising said contact system.

The contact system of the utility model has the advantages that the main contact part and the movable contact part are combined in a plugging mode, the structure is simple, and the contact is reliable.

In addition, after the main contact part drives the movable contact part to move to the separation position, the main contact continues to move, the elastic piece drives the movable contact part to quickly reset to the initial position, and at the moment, the main contact part and the movable contact part move in the opposite direction, so that the distance between the main contact part and the movable contact part is quickly increased, the arc generated by breaking the main contact and the movable contact can be quickly prolonged, the arc extinguishing capacity and breaking capacity of the contact system can be obviously improved, and quick breaking is realized.

The switch electrical appliance comprises the contact system and has strong breaking capacity.

Drawings

FIG. 1 is a schematic diagram of a switch of the present utility model, in which a main contact and a movable contact of a contact system are in a mode B, the movable contact is pivoted, the movable contact and the movable contact are in a breaking state, and an inserting structure adopts a first setting mode;

FIG. 2 is a schematic structural view of a switching device according to the present utility model, in which a main contact and a movable contact of a contact system are arranged in a manner B, the movable contact is pivoted, the main contact and the movable contact are in a closed state, and a plug-in structure is arranged in a first manner;

FIG. 3 is a schematic structural diagram of a switching device according to the present utility model, in which a main contact and a movable contact of a contact system are in a mode B, the movable contact is pivotally disposed, the main contact portion drives the movable contact portion to move to a disengaged position, and the plug-in structure adopts a first arrangement mode;

fig. 4 is a schematic structural view of the main contact structure of fig. 1-3, with the main contact being a socket;

FIG. 5 is a schematic view of the structure of the main contact structure of FIG. 4 in accordance with the present utility model;

fig. 6 is a schematic view of the movable contact of fig. 1-3, with a U-shaped cross-section, in accordance with the present utility model;

FIG. 7 is a schematic structural view of a switching device according to the present utility model, in which a main contact and a movable contact of a contact system are arranged in a manner B, the movable contact is pivoted, the main contact and the movable contact are in a closed state, and a plug-in structure is arranged in a second manner;

FIG. 8 is a schematic view of the main contact structure of FIG. 7 in accordance with the present utility model;

FIG. 9 is a schematic view of the movable contact of FIG. 7 in accordance with the present utility model;

FIG. 10 is a schematic diagram of a switch according to the present utility model, in which a main contact and a movable contact of a contact system are disposed in a manner B, the movable contact is integrally moved, the main contact and the movable contact are in a closed state, and a plug-in structure is disposed in a first manner;

FIG. 11 is a schematic diagram of a three-dimensional structure of a switching device according to the present utility model, in which a main contact and a movable contact of a contact system are disposed in a manner B, the movable contact is integrally moved, the main contact and the movable contact are in a closed state, and an inserting structure is disposed in a first manner;

FIG. 12 is a schematic diagram of a switch according to the present utility model, in which a main contact and a movable contact of a contact system are in a mode B, the movable contact is integrally moved and disposed, the main contact portion drives the movable contact portion to move to a disengaged position, and the plug-in structure adopts a first arrangement mode;

FIG. 13 is a schematic diagram of a switch according to the present utility model, in which a main contact and a movable contact of a contact system are disposed in a manner B, the movable contact is integrally moved, the main contact and the movable contact are in a breaking state, and an inserting structure is disposed in a first manner;

fig. 14 is a schematic view of the movable contact of fig. 10-13 in accordance with the present utility model;

FIG. 15 is a schematic view of a movable contact structure of a plug structure according to a third embodiment of the present utility model;

fig. 16 is a schematic view of a main contact of a plug structure according to a third embodiment of the present utility model;

FIG. 17 is a schematic view of a movable contact structure of a plug structure according to a fourth embodiment of the present utility model;

fig. 18 is a schematic structural view of a main contact of a plug structure according to a fourth embodiment of the present utility model.

Description of the reference numerals

1, a shell;

1-0 positioning block; g a guide rail structure; 1-1 track grooves; 1-2 track walls;

m main contact structures;

2, a main contact; 2-0 main contact; 2-1 main contact knife; 2a first main touch pad; 2b a second main touch pad; 2c a third main touch pad;

3, a main shaft;

s a movable contact structure;

4 a movable contact; 4-1 a movable contact portion; 4-2 a movable contact shaft hole; 4-3, limiting the bulge of the movable contact; 4-4 guide plates; 4-5 a movable contact hanging spring part;

5 a movable contact shaft;

6, an elastic piece;

c, inserting a socket;

7, soft connection;

8, a wiring terminal;

9, a spring fixing shaft;

Detailed Description

Specific embodiments of the switching device according to the present utility model will be further described below with reference to examples shown in the drawings. The switching device of the present utility model is not limited to the description of the following embodiments.

The switching device comprises a contact system, wherein the contact system comprises a main contact structure m and at least one group of movable contact structures s, and the main contact structure m and the movable contact structures s are closed and disconnected to conduct and break a circuit where the switching device is positioned. Further, the switching device further comprises an operating mechanism, and the operating mechanism is in transmission connection with the main contact structure m so as to drive the main contact structure m to be closed and disconnected with the movable contact structure s. Further, the switching device further comprises a housing 1 for accommodating the contact system. Further, when the switching device is a rotary isolating switch, the shell 1 is a shell of a switching unit of the rotary isolating switch; or when the switch electric appliance is a breaker, the shell 1 is a breaker shell; alternatively, when the switching device of the present utility model is a change-over switch, the housing 1 is a change-over switch housing.

As shown in fig. 1-3, 7, 11-14, the main contact structure m comprises a main contact 2, the main contact 2 comprises at least one main contact portion 2-0, the movable contact structure s comprises a movable contact 4, the movable contact 4 comprises a movable contact portion 4-1, and the main contact 2-0 is combined with the movable contact portion 4-1 to close the main contact 2 and the movable contact 4 when the main contact 2 is in the closed position. Further, the movable contact structure s further comprises an elastic piece 6 matched with the movable contact 4; in the breaking process of the main contact 2 and the movable contact 4, the main contact part 2-0 drives the movable contact part 4-1 to move from an initial position to a disengaging position, meanwhile, the movable contact 4 enables the elastic piece 6 to store energy, the main contact 2 continues to move, and then the movable contact part 4-1 is disengaged from the main contact part 2-0, and the elastic piece 6 releases energy to drive the movable contact part 4-1 to reset to the initial position; namely, the method comprises the following steps: in the process of moving the main contact 2 from the closed position to the breaking position (in the process of moving the main contact structure m from the closed position to the breaking position), the main contact 2-0 moves from the closed position to the middle position to drive the movable contact 4-1 to move from the initial position to the breaking position, meanwhile, the movable contact 4 stores energy by the elastic piece 6, the elastic piece 6 stores energy to the maximum when the movable contact 4-1 is at the breaking position, the main contact 2 continues to move to the breaking position, the movable contact 4-1 is separated from the main contact 2-0, and the elastic piece 6 releases energy to drive the movable contact 4-1 to reset to the initial position (namely, the elastic piece 6 drives the movable contact 4-1 to move away from the main contact 2-0, the movement directions of the movable contact 4-1 and the main contact 2-0 are substantially opposite, and simultaneously the movable contact 4-1 resets from the breaking position to the initial position, and the movable contact 4-1 and the main contact 2-0 move away from each other), and simultaneously the main contact 2 continues to move to the breaking position. In the contact system, after the main contact part 2-0 drives the movable contact part 4-1 to move to the disengaging position, the main contact 2 continues to move, the elastic piece 6 drives the movable contact part 4-1 to quickly reset to the initial position, and at the moment, the main contact part 2-0 and the movable contact part 4-1 basically move reversely, so that the distance between the main contact part 2-0 and the movable contact part 4-1 is quickly increased, the arc generated by breaking the main contact 2 and the movable contact 4 can be quickly prolonged, the arc extinguishing capacity and breaking capacity of the contact system can be obviously improved, and quick switching-off is realized. It should be noted that, in the process that the main contact portion 2-0 drives the movable contact portion 4-1 to move from the initial position to the release position, the main contact portion 2-0 and the movable contact portion 4-1 do not remain relatively stationary, and relatively move and/or relatively rotate until the main contact portion 2-0 cannot drive the movable contact portion 4-1 to continue to move, so that the elastic member 6 further stores energy. The main contact 2 and the movable contact 4 are in a closed state, the main contact 2 and the movable contact 4 are disconnected, and the movable contact 4 is in a static state, wherein the position of the movable contact part 4-1 is the initial position; the movable contact portion 4-1 is driven by the main contact portion 2-0 to move to a position farthest from the initial position, namely a release position, and when the movable contact portion 4-1 moves to the release position, the movable contact 4 causes the elastic member 6 to store energy to a maximum value. The position where the main contact 2 and the movable contact 4 are in the closed state is the closed position, and the final position where the main contact 2 and the movable contact 4 are still kept after being disconnected is the breaking position, and the intermediate position enables the main contact 2 to pass through a position in the process of moving from the closed position to the breaking position.

As shown in fig. 1-3, 7, 10-13, the contact system further comprises a connecting terminal 8, the connecting terminal 8 is in one-to-one fit with the movable contact 4, and the movable contact 4 is electrically connected with the connecting terminal 8 through the flexible connection 7.

As a further embodiment, the movable contact 4 is electrically connected to the connection terminal 8 by a hard connection.

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

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 part 2-0, the movable contact 4 of the movable contact structure s is provided with a movable contact part 4-1, and the main contact 2 acts to switch between a closing position and a breaking position so that the main contact part 2-0 is combined with and separated from the movable contact part 4-1.

Mode B: the contact system is provided with a group of movable contact structures and two groups of movable contact structures s, the main contact 2 of the main contact structure m is provided with two main contact parts 2-0, the movable contacts 4 of the two groups of movable contact structures s are respectively provided with one movable contact part 4-1, the main contact 2 (the main contact structure m) acts to switch between a closing position and a breaking position, so that the two main contact parts 2-0 are respectively combined with and separated from the two movable contact parts 4-1, and when the two main contact parts 2-0 are respectively combined with the two movable contact parts 4-1, the three parts are in a series connection state.

Specifically, as shown in fig. 1-2, 7 and 10-13, the main contact 2 includes two main contact portions 2-0 respectively disposed at two ends thereof, the contact system includes two movable contact structures s, the two movable contact structures s are respectively disposed at two sides of the main contact structure m, and the two main contact portions 2-0 are respectively used for closing and opening the movable contact portions 4-1 of the two movable contacts 4. The contact system adopts a double-breakpoint structure, which is beneficial to further improving the breaking capacity and the arc extinguishing capacity. Further, the two movable contacts 4 are electrically connected with two sets of connection terminals 8 through two flexible connections 7 respectively.

Mode C: the contact system is provided with a group of movable contact structures and two groups of movable contact structures s, the main contact 2 of the main contact structure m is provided with a main contact part 2-0, the movable contacts 4 of the two groups of movable contact structures s are respectively provided with a movable contact part 4-1, and the main contact part 2-0 acts to switch between two working positions (the two working positions are respectively a closed position and a breaking position relative to any movable contact 4) so as to be respectively combined with and separated from the two movable contact parts 4-1, namely: when the main contact portion 2-0 is coupled to one movable contact portion 4-1 (the main contact 2 is closed to the one movable contact 4), it is separated from the other movable contact portion 4-1 (the main contact 2 is separated from the other movable contact 4).

The contact system of modes a and B is preferably applied to rotary disconnectors, circuit breakers and the like.

The contact system of mode C is preferably applied to a transfer switch.

Further, the main contact structure m is pivotally arranged or integrally movably arranged.

Further, the movable contact 4 is pivotally arranged or integrally movably arranged.

Specifically, the movement modes of the main contact structure m and the movable contact structure s have the following four setting modes:

mode 1: the main contact structure m is pivoted, the movable contact 4 is pivoted, and the main contact structure m rotates to enable the main contact part 2-0 to be combined with and separated from the movable contact part 4-1, namely, 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 closing position to the breaking position, the main contact structure m (main contact 2) rotates from the closing position to the middle position, the main contact part 2-0 drives the movable contact part 4-1 to rotate around the rotation center of the movable contact 4 to rotate the whole movable contact 4, the movable contact part 4-1 rotates from the initial position to the disengaging position, meanwhile, the movable contact 4 enables the elastic piece 6 to store energy, when the movable contact part 4-1 rotates to the disengaging position, the elastic piece 6 stores energy to the maximum, after the main contact part 2-0 is disengaged from the movable contact part 4-1, the elastic piece 6 releases energy to drive the movable contact part 4-1 to rotate from the disengaging position to the initial position, and meanwhile, the main contact structure m (main contact 2) continues to rotate to the breaking position, and the rotation directions of the movable contact part 4-1 and the main contact part 2-0 are opposite.

The following is one embodiment of mode 1:

as shown in fig. 1-3 and 7, the main contact structure m is pivotally arranged, the movable contact 4 of the movable contact structure s is pivotally arranged, and the main contact structure m rotates to enable the main contact portion 2-0 to be combined with and separated from the movable contact portion 4-1, that is, enable the main contact 2 and the movable contact 4 to be closed and separated.

As shown in fig. 1-3 and 7, the middle part of the movable contact 4 is pivoted, one end is provided with a movable contact part 4-1, and the other end is matched with an elastic piece 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 at two sides of the movable contact 4.

As shown in fig. 1-3 and 7, the movable contact 4 further 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 the elastic member is sleeved on the movable contact limiting protrusion 4-3, and the other end of the elastic member is disposed on the housing 1.

As shown in fig. 1-3 and 7, the movable contact structure s further comprises a fixedly arranged movable contact shaft 5, by means of which movable contact shaft 5 the movable contact 4 is pivotally arranged. Further, the movable contact shaft 5 is fixedly disposed 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.

As shown in fig. 1-3 and 7, the elastic member 6 is a compression spring, the elastic member 6 acts on the movable contact 4 to enable one end provided with the movable contact portion 4-1 to abut against the positioning block 1-0, that is, to enable the movable contact portion 4-1 to be kept at an initial position, and the positioning block 1-0 and the elastic member 6 are located on the same side of the movable contact 4. Further, the positioning points 1-0 are ribs arranged on the shell 1.

As other embodiments, the elastic member 6 is a tension spring, and the positioning block 1-0 and the elastic member 6 are located at two 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 this is not a list of possible setting positions of the elastic member 6.

As other embodiments, when the positioning is omitted from 1-0, the movable contact shaft 5 is provided with a shaft limiting surface, the movable contact shaft hole 4-2 of the movable contact 4 is internally provided with a hole limiting surface, and the elastic piece 6 acts on the movable contact 4 to enable the hole limiting surface to be in limiting fit with the shaft limiting surface, so that the movable contact 4 is positioned at the initial position. The hole-limiting surface and the shaft-limiting surface may be realized by the prior art and will not be described 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 here, but are all within the scope of protection of the present application.

Specifically, as shown in fig. 1-3 and 7, the main contact 2 includes two main contact portions 2-0 respectively disposed at two ends thereof, two sets of movable contacts 4 are respectively pivotally disposed at two radial sides of a main contact structure m, and the main contact structure m (main contact 2) rotates to switch between a closed position and a breaking position, so that the two main contact portions 2-0 are engaged with and disengaged from the movable contact portions 4-1 of the two movable contacts 4. The two groups of movable contact structures s are mutually symmetrical with the rotation center of the main contact structure m as a symmetrical center. The two groups of movable contact structures s adopt a central symmetrical structure, so that the structure types are reduced, the production cost is reduced, the two groups of movable contact structures s are not required to be screened in the installation process, and the assembly efficiency is improved. Further, the two groups of connection terminals 8 are in a symmetrical structure with the rotation center of the main contact structure m as a symmetrical center.

Mode 2: the main contact structure m is pivoted, the movable contact 4 is integrally moved on a preset plane, and the main contact structure m rotates to enable the main contact part 2-0 to be combined with and separated from the movable contact part 4-1, namely the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m (the main contact 2) rotates from the closing position to the breaking position, the main contact part 2-0 rotates from the closing position to the middle position, the movable contact 4 integrally moves through the movable contact part 4-1 to enable the movable contact 4 to move from the initial position 1 to the disengaging position, at the moment, the elastic piece 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 piece 6 releases energy to drive the movable contact part 4-1 to move back to the initial position, and meanwhile, the main contact structure m (the main contact 2) continues to rotate to the breaking position.

The following is one embodiment of mode 2:

as shown in fig. 10-13, the main contact structure m is pivotally arranged, the movable contact 4 is integrally moved on a preset plane, and the main contact structure m rotates to enable the main contact portion 2-0 to be combined with and separated from the movable contact portion 4-1, that is, enable the main contact 2 and the movable contact 4 to be closed and separated.

As shown in fig. 10 to 13, the movable contact 4 is integrally provided so as to be movable in the extending direction of the guide rail structure g which is fixedly provided. Further, the rail structure g is preferably a linear rail structure, and is preferably disposed on the housing 1. Of course, the rail structure may also be an arcuate rail structure.

As shown in fig. 10-13, the elastic member 6 is a tension spring, and the elastic member 6 and the main contact portion 2-0 are respectively located at two sides of the movable contact 4. Further, the movable contact 4 includes a movable contact hanging spring portion 4-5, and 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, the elastic member 6 is fixed at one end thereof, and is fixed to the housing 1 via a spring fixing shaft 9. Further, the geometric axis of the elastic member 6 coincides with the extension path of the rail structure g.

As shown in fig. 10 to 13, the rail structure g includes rail walls 1 to 2 and rail grooves 1 to 1 formed between the oppositely disposed two rail walls 1 to 2; the movable contact 4 further comprises a guide plate 4-4, the movable contact shaft 5 is inserted into the guide rail groove 1-1 in a sliding mode, the guide plate 4-4 and the movable contact shaft 5 are respectively located on two sides of one guide rail wall 1-2, the guide plate 4-4 and the movable contact shaft 5 are in sliding contact with two sides of the guide rail wall 1-2, namely the movable contact shaft 5 can be in sliding contact with the inner side face of the guide rail wall 1-2, and the guide plate 4-4 is in sliding fit with the outer side face of the guide rail wall 1-2, so that the movable contact 4 can reliably and stably slide along the extending direction of the guide rail structure g. Further, the movable contact portion 4-1 and the guide plate 4-4 are respectively located at two radial sides of the movable contact shaft 5, that is, the movable contact portion 4-1 and the guide plate 4-4 are respectively located at two ends of the movable contact 4, and the movable contact shaft hole 4-2 is arranged in the middle of the movable contact 4.

As shown in fig. 10-13, the elastic member 6 is a tension spring, the elastic member 6 acts on the movable contact 4 to make it abut against the positioning block 1-0, even if the movable contact portion 4-1 of the movable contact 4 is kept at the initial position, the positioning block 1-0 and the elastic member 6 are located on the same side of the movable contact 4. Further, the positioning block 1-0 is a block rib arranged on the shell 1-0.

As other embodiments, the elastic member 6 is a compression spring, and the elastic member 6 and the positioning block 1-0 are located at two 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 here.

As another embodiment, the movable contact structure s is not provided with the positioning block 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.

In the above-described modes 1 and 2, the main contact structure m is pivotally provided, and therefore, the main contact structure m may also be referred to as a rotary contact structure m, the main contact 2 may also be referred to as a rotary contact 2, and the main contact portion 2-0 may also be referred to as a rotary contact portion 2-0.

Mode 3: the main contact structure m and the movable contact 4 are integrally arranged on a preset plane in a moving way; the main contact structure m moves in opposite directions and in opposite directions with the movable contact 4 to enable the main contact part 2-0 to be combined with and separated from the movable contact part 4-1, namely the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m moves from the closing position to the breaking position, the main contact structure m (main contact 2) moves from the closing position to the middle position, the main contact part 2-0 drives the movable contact 4 to integrally move from the initial position to the breaking position through the movable contact part 4-1, meanwhile, the elastic piece 6 stores energy to the maximum, after the main contact part 2-0 and the movable contact part 4-1 are separated, the elastic piece 6 releases energy to drive the movable contact part 4-1 to move back to the initial position, meanwhile, the main contact structure m (main contact 2) continues to move to the breaking position, and the moving directions of the main contact part 2-0 and the movable contact part 4-1 are opposite.

Mode 4: the main contact structure m is integrally arranged on a preset plane in a moving way, and the movable contact 4 is pivoted; the main contact structure m integrally moves to approach and separate from the movable contact 4, so that the main contact part 2-0 and the movable contact part 4-1 are combined and separated, namely, the main contact 2 and the movable contact 4 are closed and disconnected; when the main contact structure m moves from the closing position to the breaking position, the main contact structure m integrally moves from the closing position to the middle position, 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 as to enable the whole movable contact 4 to rotate, meanwhile, the movable contact 4 enables the elastic piece 6 to store energy, when the movable contact part 4-1 rotates to the breaking position, the elastic piece 6 stores energy to the maximum, the main contact structure m continuously moves from the middle position to the breaking position so as to enable the main contact part 2-0 to be separated from the movable contact part 4-1, the elastic piece 6 releases energy to drive the movable contact part 4-1 to reversely rotate and reset to the initial position, and the main contact structure m (the main contact 2) continuously moves to the breaking position.

In the switching device of the present utility model, the movement modes of the main contact structure m and the movable contact structure s of the contact system are preferably mode 1 or mode 2. Further, in the above-mentioned modes 1 and 2, the main contact structure m further includes a main shaft 3 pivotally provided, the main contact structure m is pivotally provided 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 side in the radial direction of the main shaft 3.

As shown in fig. 1-18, the main contact portion 2-0 and the movable contact portion 4-1 are in plug-in fit, so that the combination of the main contact portion 2-0 and the movable contact portion 4-1 is realized, the structure is simple, the contact is reliable, and the structure is facilitated to be simplified. Further, the contact system further comprises at least one set of plug-in structures, wherein each plug-in structure comprises a plug board and a socket c, one plug-in structure is arranged on the main contact part 2-0, the other plug-in structure is arranged on the movable contact part 4-1, and the plug board device is clamped by the inner side wall of the socket c in the socket, so that the main contact part 2-0 is combined with the movable contact part 4-1. Further, the main contact 2 includes two main contact portions 2-0 provided at both ends thereof, respectively, and the two main contact portions 2-0 are mated with the movable contact portions 4-1 of the two movable contacts 4.

Specifically, the main contact portion 2-0 and the movable contact portion 4-1 are in plug-in fit through a set of plug-in structures:

as shown in fig. 1-6, the first arrangement of the plugging structure is as follows: the main contact part 2-0 is a plugboard, the cross section of the movable contact part 4-1 is of a U-shaped structure, a socket c is formed in the middle of the U-shaped structure, and the plugboard is inserted into the socket. Further, the movable contact 4 is formed by bending a metal plate material, and forms a U-shaped structure of the cross section of the movable contact portion 4-1.

As shown in fig. 7-9, the second arrangement of the plugging structure is as follows: the main contact part 2-0 comprises two main contact blades 2-1 which are oppositely arranged, a socket c is formed between the two main contact blades 2-1, the movable contact part 4-1 is a plugboard, and the plugboard is inserted into the socket c and clamped by the inner side wall of the socket c. The main contact 2 comprises two main contact plates which are arranged in parallel at intervals, namely a first main contact plate 2a and a second main contact plate 2b, and main contact blades 2-1 are arranged at two ends of the first main contact plate 2a and the second main contact plate 2 b.

Specifically, the main contact part 2-0 and the movable contact part 4-1 are in plug-in fit through a plurality of groups of plug-in structures. Further, the main contact part 2-0 is provided with a plugboard and a jack c, which are a movable plugboard and a movable jack, and at least one side wall of the movable jack is used as the movable plugboard; the movable contact part 4-1 is provided with a plugboard and a socket c, and is a static plugboard and a static socket, and at least one side wall of the static socket is used as the static plugboard; the main contact part 2-0 is in plug-in fit with the movable contact part 4-1, the movable plug board is inserted into the static plug socket, the static plug board is inserted into the movable plug socket, and the side walls of the movable plug socket and the static plug socket are alternately arranged:

as shown in fig. 15-16, a third arrangement of the plugging structure is as follows: the main contact part 2-0 comprises two main contact blades 2-1 which are oppositely arranged, the two main contact blades 2-1 are used as two movable plugboards, and a movable socket is formed between the two movable plugboards; the movable contact part 4-1 comprises two static insertion holes, and the side wall between the two static insertion holes is used as a static insertion 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 insertion holes, the static insertion plate is inserted into the movable insertion hole, and the two side walls on the two sides of the two static insertion holes are clamped on the two sides of the two main contacts 2-1. Further, the main contact 2 includes two main contact plates arranged in parallel at intervals, namely a first main contact plate 2a and a second main contact plate 2b, and main contact blades 2-1 are respectively arranged at two ends of the first main contact plate 2a and the second main contact plate 2 b.

As shown in fig. 17-18, a fourth implementation of the plugging structure is: the main contact part 2-0 comprises three main contact blades 2-1 which are arranged side by side at intervals, a movable socket is formed between two adjacent main contact blades 2-1, and the main contact blade 2-1 positioned in the middle is used as a movable plugboard; the cross section of the movable contact part 4-1 is of a U-shaped structure, a socket c is formed in the middle of the U-shaped structure and is a static socket, and side walls on two sides of the static contact are static plugboards; when the main contact part 2-0 and the movable contact part 4-1 are combined, one movable plugboard is inserted into the static socket, two static plugboards are inserted into the two movable sockets, and the two main contact blades 2-1 are clamped on two sides of the movable contact part 4-1. Further, the main contact 2 includes three main contact plates sequentially arranged at intervals side by side, namely a first main contact plate 2a, a third main contact plate 2c and a second main contact plate 2b, and main contact blades 2-1 are respectively arranged at two ends of the three main contact plates, and the main contact blades 2-1 of the second main contact plate 2c are used as movable plugboards.

It should be noted that the main contact portion 2-0 and the movable contact portion 4-1 are not limited to the plug-in fitting to achieve the combination of the two, for example: the main contact portion 2-0 and the movable contact portion 4-1 may also be engaged by a snap-fit structure including a first structure and a second structure that are engaged, the snap-fit first structure and the second structure being disengaged when pulled by a predetermined external force. For example, the first structure and the second structure are two half-arrow hooks used in a matched manner; or, the first structure is two elastic clamping arms arranged on the movable contact part 4-1, each elastic clamping arm is of a > shape structure, and the tips of the > shape structures of the two elastic clamping arms are opposite; the second structure is two bulges arranged on the main contact part 2-0, when the main contact 2 and the movable contact 4 are closed, the two bulges enter between the two free ends of the two elastic clamping arms, and 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.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (14)

1. A contact system comprising a main contact structure (m) and at least one set 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);

the method is characterized in that: the main contact part (2-0) and the movable contact part (4-1) are in plug-in fit to enable the main contact (2) and the movable contact (4) to be closed.

2. The contact system of claim 1, wherein: the contact system further comprises at least one group of plug-in structures, wherein one plug-in structure comprises a plug board and a socket (c), the plug-in structures are arranged on the main contact part (2-0), the other plug-in structure is arranged on the movable contact part (4-1), the plug board is inserted into the socket (c) and clamped by the inner side wall of the socket (c), and the main contact part (2-0) is combined with the movable contact part (4-1).

3. The contact system of claim 2, wherein: the main contact part (2-0) is a plugboard, the cross section of the movable contact part (4-1) is of a U-shaped structure, and a socket (c) is formed in the middle of the U-shaped structure.

4. The contact system of claim 2, wherein: the main contact part (2-0) is provided with a plugboard and a jack (c), wherein the plugboard and the jack are a movable plugboard and a movable jack, and at least one side wall of the movable jack is used as the movable plugboard; the movable contact part (4-1) is provided with a plugboard and a socket (c), which are a static plugboard and a static socket, and at least one side wall of the static socket is used as the static plugboard;

the main contact part (2-0) is in plug-in fit with the movable contact part (4-1), the movable plug board is inserted into the static plug socket, the static plug board is inserted into the movable plug socket, and the side walls of the movable plug socket and the static plug socket are alternately arranged.

5. The contact system of claim 1, wherein: the movable contact structure(s) further comprises an elastic piece (6) matched with the movable contact (4);

in the breaking process of 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 the initial position to the disengaging position, the elastic piece (6) stores energy, the main contact (2) continues to move, and the elastic piece (6) releases energy to drive the movable contact part (4-1) to reset to the initial position.

6. The contact system of claim 5, wherein: the main contact (2) moves from a closed position to an intermediate position, and simultaneously drives the movable contact part (4-1) to move from an initial position to a separation position through the main contact part (2-0); in the process that the main contact (2) moves from the intermediate position to the disconnection position, the elastic piece (6) releases energy to drive the movable contact part (4-1) to return to the initial position from the disconnection position, and the main contact part (2-0) and the movable contact part (4-1) move away from each other in a back-to-back mode.

7. The contact system of claim 5, wherein: the elastic piece (6) is a spring or a shrapnel.

8. The contact system of claim 1, wherein: the main contact structure (m) is rotatably arranged or integrally movably arranged.

9. The contact system of claim 1, wherein: the movable contact (4) is rotatably arranged or integrally movably arranged.

10. The contact system of claim 5, wherein: the main contact structure (m) is pivotally arranged; the middle part of the movable contact (4) is pivoted, one end of the movable contact is provided with a movable contact part (4-1), and the other end of the movable contact is matched with the elastic piece (6); the movable contact (4) rotates to switch the movable contact part (4-1) between an initial position and a disengaged position.

11. The contact system of claim 10, wherein: the elastic piece (6) is a pressure spring, when the movable contact part (4-1) is at the initial position, the pressure spring enables the movable contact (4) to lean against a positioning block (1-0) fixedly arranged, and the positioning block (1-0) and the pressure spring are positioned on the same side of the movable contact (4).

12. The contact system of any one of claims 1 to 10, wherein: the main contact structure (m) is pivoted, the movable contact (4) is integrally moved, and the movable contact (4) integrally moves to switch the movable contact part (4-1) between an initial position and a release position.

13. The contact system of claim 12, wherein: the movable contact (4) is arranged in a translational manner along the extending direction of a fixedly arranged guide rail structure (g), the elastic piece (6) is a tension spring, and the positioning block (1-0) and the tension spring are positioned on the same side of the movable contact (4); when the movable contact part (4-1) is at the initial position, the tension spring enables the movable contact (4) to lean against the fixed positioning block (1-0) and to be in limit fit with the guide rail structure (g).

14. A switching device, characterized in that: the switching device comprising the contact system of any one of claims 1-13.