Arc extinguishing mechanism

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to an arc extinguishing mechanism, which comprises an arc extinguishing chamber and a static contact which are matched for use, and the arc extinguishing chamber comprises at least two arc extinguishing grid sheets which are arranged side by side at intervals along a first direction; the static contact comprises a static contact knife and a static wiring board which are connected in a bending mode, the static contact knife and the static wiring board are integrally of an L-shaped structure, the static wiring board is located on one side of the arc extinguish chamber and arranged side by side with the arc extinguish grid pieces in the first direction, the static contact knife extends in the first direction, one end of the static contact knife is connected with the static wiring board in a bending mode, and the other end of the static contact knife extends towards an arc inlet of the arc extinguish chamber. The arc extinguishing mechanism is good in arc extinguishing performance.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to an arc extinguishing mechanism. Background Art

[0002] In the existing switch device, an arc extinguishing chamber is often provided for use with the contact system to extinguish the arc generated by the closing and opening of the contact system; in order to improve the efficiency of the arc entering the arc extinguishing chamber, the magnetic field generated by the contact system and the arc extinguishing grid of the arc extinguishing chamber is often used to accelerate the arc into the arc extinguishing chamber; however, the existing coordination relationship between the arc extinguishing chamber and the contact system is not effective in driving the arc into the arc extinguishing chamber. In addition, in the existing switch device, the layout of the static contact and the arc extinguishing chamber often requires a large installation space. In addition, in the existing switch device, the arc extinguishing chamber often needs to be provided with a large number of arc extinguishing grids to improve the arc extinguishing effect, thereby increasing the installation space required for the arc extinguishing chamber. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide an arc extinguishing mechanism with good arc extinguishing performance.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An arc extinguishing mechanism comprises an arc extinguishing chamber and a static contact used in conjunction with each other, the arc extinguishing chamber comprising at least two arc extinguishing grids arranged side by side and spaced apart along a first direction; the static contact comprises a static contact knife and a static wiring board connected by bending, the static contact knife and the static wiring board are L-shaped as a whole, the static wiring board is located on one side of the arc extinguishing chamber and is arranged side by side with each arc extinguishing grid along the first direction, the static contact knife extends along the first direction, one end is connected to the static wiring board by bending and the other end extends toward the arc entrance of the arc extinguishing chamber.

[0006] Furthermore, the plane where the static terminal plate is located is perpendicular to the first direction.

[0007] Furthermore, the plane where the static contact blade is located is parallel to the first direction and perpendicular to the plane where the static terminal board is located.

[0008] Furthermore, the arc extinguishing grid adjacent to the static terminal board of the arc extinguishing chamber is the first grid, and the side of the first grid facing the static terminal board is the first grid side; the end of the static contact knife extending toward the arc inlet of the arc extinguishing chamber is flush with the first grid side.

[0009] Furthermore, the arc extinguishing chamber further comprises two arc extinguishing chamber partitions arranged relatively at an interval, and each arc extinguishing grid is arranged between the two arc extinguishing chamber partitions and has two ends respectively fixedly connected to the two arc extinguishing chamber partitions.

[0010] Furthermore, the arc extinguishing grid includes two groups of grid foots respectively arranged at two ends thereof, and the arc extinguishing chamber partition includes partition holes arranged thereon, and the grid foots are inserted into the corresponding partition holes.

[0011] Furthermore, the static contact is an integrated structure.

[0012] Furthermore, the arc extinguishing mechanism also includes a moving contact arranged to move along the first direction, and the moving contact is plugged into the static contact to be closed; one end of the static wiring board is connected to the static contact knife by a bend, and one end of the moving contact is used to plug and cooperate with the static contact knife, and the other end of the static wiring board and the other end of the moving contact extend in two opposite directions.

[0013] Furthermore, the moving contact includes two moving contact plates arranged opposite to each other. When the moving contact and the static contact are closed, the static contact knife is inserted between the two moving contact plates and clamped. The arc extinguishing grid includes two arc extinguishing grooves arranged side by side at intervals. The two arc extinguishing grooves of each arc extinguishing grid form two arc extinguishing channels arranged side by side. One end of the two moving contact plates cooperating with the static contact moves in the two arc extinguishing channels respectively.

[0014] Furthermore, the arc extinguishing mechanism also includes an arc baffle, which is used to be arranged between the arc extinguishing chamber and the metal parts of the operating mechanism of the switch device.

[0015] The arc extinguishing mechanism of the utility model has an L-shaped static contact. The electromagnetic force at the bent connection between the static wiring board of the static contact and the static contact knife drives the arc separated by the static contact and the moving contact to move into the arc extinguishing chamber, ensuring that the arc is completely or mostly extinguished in the arc extinguishing chamber and preventing the arc from moving toward the operating mechanism.

[0016] In addition, the layout of the static terminal board and the arc extinguishing chamber is conducive to reducing the installation space required for the arc extinguishing mechanism.

[0017] In addition, the layout of the stationary contact blade and the first grid is conducive to reducing the number of arc extinguishing grids required for the arc extinguishing chamber, facilitating the transfer of the arc root on the stationary contact blade to the arc extinguishing grid, and improving the arc extinguishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a side projection view of the switch device of the utility model, showing the indicator window;

[0019] Figure 2 It is a partial cross-sectional view of the switch device of the utility model;

[0020] Figure 3 This utility model Figure 2 An enlarged structural diagram of part I;

[0021] Figure 4It is another partial cross-sectional view of the switch device of the utility model, showing the matching relationship between the connecting rod and the main body shell;

[0022] Figure 5 It is a third partial cross-sectional view of the switch device of the utility model, showing the matching relationship between the drive shaft and the main body;

[0023] Figure 6 It is a structural schematic diagram of the switch device of the utility model without the upper cover;

[0024] Figure 7 It is a structural schematic diagram of the contact system of the switch body of the utility model;

[0025] Figure 8 It is an exploded view of the operating mechanism of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the rotating shaft of the utility model;

[0027] Fig.10 It is a structural schematic diagram of the connecting rod of the utility model;

[0028] Fig.11 It is a schematic diagram of the structure of the drive shaft of the utility model under one viewing angle;

[0029] Fig.12 It is a schematic diagram of the structure of the drive shaft of the utility model from another perspective;

[0030] Fig.13 It is a structural schematic diagram of the active contact mechanism of the utility model at one viewing angle;

[0031] Fig.14 It is a structural schematic diagram of the active contact mechanism of the utility model from another perspective;

[0032] Fig.15 This is a schematic diagram of the structure of the main contact support of the utility model;

[0033] Fig.16 This utility model Fig.15 A schematic diagram of the enlarged structure of part II;

[0034] Fig.17 This is an exploded view of the movable contact of the utility model;

[0035] Fig.18 It is a structural schematic diagram of the main static contact mechanism of the utility model;

[0036] Fig.19 is a schematic diagram of the structure of the main static contact assembly of the utility model, wherein sub-figure (a) is a schematic diagram of the structure of the main static contact assembly at one viewing angle, and sub-figure (b) is a schematic diagram of the structure of the main static contact assembly at another viewing angle;

[0037] Fig. 20 It is a structural schematic diagram of the static contact of the utility model;

[0038] Fig.21 It is a structural schematic diagram of the arc extinguishing grid of the utility model;

[0039] Fig. 22 It is a structural schematic diagram of the upper cover of the utility model;

[0040] Fig.23 It is a structural schematic diagram of the base of the utility model;

[0041] Fig.24 It is a structural schematic diagram of the contact system and the base of the utility model in an assembled state.

[0042] Description of Reference Numerals

[0043] Switch body z;

[0044] Main body shell h, upper cover h-1, indication window h-10, shell positioning groove h-11, shell positioning surface h-12, upper cover partition h-13, upper cover pin h-14, upper cover terminal groove h-15, shell shaft hole h-16, base h-2, main guide groove h-20, blocking surface h-21, base terminal partition h-22, base main jack h-220, auxiliary guide groove h-24, base terminal groove h-25, base auxiliary jack h-26, exhaust hole h-27, contact cavity h-28;

[0045] Operating mechanism m, rotating shaft 1, rotating shaft body 1-0, rotating shaft socket 1-00, first positioning part 1-1, rotating shaft mounting seat 1-2, second positioning part 1-3, connecting rod 2, connecting rod bearing part 2a, first side plate of bearing part 2-0a, second side plate of bearing part 2-1a, second connecting rod shaft hole 2-10a, connecting rod stopper 2-11a, bearing part connecting bridge 2-2a, connecting rod mounting seat 2-3a, connecting rod connecting part 2b, connecting rod sleeve 2-0b, connecting rod claw 2-1b, energy storage structure 3, energy storage spring 3-0, driving shaft 4, driving shaft bearing part 4a, driving shaft bearing plate 4-0a, driving shaft baffle 4-1a, driving shaft driving part 4b, driving shaft first socket 4-0b, driving shaft partition wall 4-1b, driving shaft second socket 4-2b, driving shaft connecting groove 4-3b, driving groove 4-4b;

[0046] Main contact system c, active contact mechanism 5, main contact support 5-0, support driven part 5-00, transmission part 5-000, transmission arm 5-001, main rail 5-0010, stopper 5-0011, support linkage hole 5-0012, opening and closing indication structure 5-0013, support bearing part 5-01, contact socket 5-010, contact partition wall 5-011, contact positioning platform 5-013, support spring positioning platform 5-014, auxiliary rail 5-02, moving contact 5 -1, moving touch plate 5-10, moving touch plate positioning hole 5-100, moving touch plate positioning platform 5-101, magnetic conductive plate 5-11, magnetic conductive plate limiting hole 5-110, contact spring 5-2, main static contact mechanism 6, main static contact assembly 6-0, static contact 6-00, static contact knife 6-000, static wiring board 6-001, wiring terminal 6-01, wiring frame 6-010, wiring screw 6-011; arc extinguishing chamber 7, arc extinguishing chamber partition 7-0, arc extinguishing grid 7-1, grid foot 7-11. DETAILED DESCRIPTION

[0047] The following is a further description of the specific implementation of the switch device of the present utility model in conjunction with the embodiments given in the accompanying drawings. The switch device of the present utility model is not limited to the description of the following embodiments.

[0048] like Figure 1-6 FIG. 1 is an embodiment of the switch device of the present utility model.

[0049] The switch device of this embodiment includes a switch body z, which includes an operating device and at least one group of contact systems. The operating device includes an operating mechanism m and a main contact support 5-0. The contact system includes a moving contact 5-1 and a main static contact mechanism 6 used in conjunction with each other. The moving contact 5-1 is carried on the main contact support 5-0. The main static contact mechanism 6 includes at least one static contact 6-0. The operating mechanism m is connected to the main contact support 5-0 by transmission to drive the main contact support 5-0 to move linearly. The main contact support 5-0 drives the moving contact 5-1 to close and disconnect with the static contact 6-00, thereby closing and opening the switch body z. Further, the main static contact mechanism 6 includes two groups of static contacts 6-00 respectively arranged on both sides of the main contact support 5-0. The operating mechanism m drives the main contact support 5-0 to move linearly. The main contact support 5-0 drives the moving contact 5-1 to move linearly so that the two ends of the moving contact 5-1 are closed and disconnected with the two groups of static contacts 6-00 respectively.

[0050] Furthermore, the switch device of this embodiment further includes an active contact mechanism 5, and the active contact mechanism 5 includes a main contact support 5-0 and a moving contact 5-1 carried by the main contact support 5-0.

[0051] Specifically, the switch device of this embodiment includes two or more contact systems, and the movable contacts 5-1 of each contact system are all carried on the main contact support 5-0. The number of the contact systems can be adjusted according to actual needs. For example, if the switch device of this embodiment is a single-phase switch, the number of the contact system is one, if the switch device of this embodiment is a two-phase switch, the number of the contact systems is two, if the switch device of this embodiment is a three-phase switch, the number of the contact systems is three, and if the switch device of this embodiment is a three-phase four-wire switch, the number of the contact systems is four.

[0052] Furthermore, the switch device of this embodiment further comprises a main body shell h, and the operating device and the contact system are both arranged in the main body shell h. Further, the main body shell h comprises an upper cover h-1 and a base h-2 which are relatively assembled together along the moving direction of the main contact support 5-0 (that is, the extension direction of the axis ss mentioned later and the height direction d3 of the switch device, which will be described later).

[0053] Furthermore, the switch device of this embodiment also includes an auxiliary module f used in conjunction with the switch body z. When the operating mechanism m drives the active contact mechanism 5 to move linearly to switch the switch body z between the closed state and the open state, the active contact mechanism 5 simultaneously drives the auxiliary module f to switch the working state.

[0054] like Figure 2-17 FIG. 1 is an embodiment of the operating device.

[0055] like Figure 4-6As shown in , 8, the operating mechanism m of the operating device includes a rotating shaft 1, a connecting rod 2 and a driving shaft 4 coaxially rotating around an axis ss, and an energy storage structure 3 respectively connected to the rotating shaft 1 and the connecting rod 2 in a transmission manner; the connecting rod 2 and the driving shaft 4 are synchronously rotated, and the driving shaft 4 is connected to the main contact support 5-0 in a transmission manner to drive the main contact support 5-0 to move along the extension direction of the axial direction ss, that is, while the driving shaft 4 reciprocates around the axis ss, it drives the main contact support 5-0 to reciprocate along the extension direction of the axis ss, thereby closing and disconnecting the active contact mechanism 5 and the main static contact mechanism 6; the The operating device has a closing state (the active contact mechanism 5 and the main static contact mechanism 6 are in a closed state) and an opening state (the active contact mechanism 5 and the main static contact mechanism 6 are in a disconnected state); the rotating shaft 1 has a first position, an intermediate position and a second position sequentially arranged along its rotation direction, that is, the rotating shaft 1 can reach the second position from the first position via the intermediate position or from the second position via the intermediate position to the first position by rotating around the axis ss; the connecting rod 2 has a third position and a fourth position sequentially arranged along its rotation direction, that is, the connecting rod 2 can reach the second position from the first position via the intermediate position by rotating around the axis ss. The third position is rotated to the fourth position or from the fourth position to the third position; the operating device is in the closed state (correspondingly, the switch device is in the closed state and the active contact mechanism 5 is in the closed position and is in the closed state with the main static contact mechanism 6), the shaft 1 is in the first position and the connecting rod 2 is in the third position; the operating device is in the open state (correspondingly, the switch device is in the open state and the active contact mechanism 5 is in the disconnected position and is in the disconnected state with the main static contact mechanism 6), the shaft 1 is in the second position and the connecting rod 2 is in the fourth position; the shaft 1 is subjected to an external force (the external force can be a passive operating force from the operator) Or the driving force of the electric operating mechanism) is driven to rotate from the first position or the second position to the middle position so that the energy storage structure 3 stores energy, and the connecting rod 2 remains stationary during the energy storage process of the energy storage structure 3. When the rotating shaft 1 is in the middle position, the energy storage structure 3 stores energy to the maximum value, that is, the rotating shaft 1 rotates from the first position to the middle position or from the second position to the middle position to store energy, and in the process of the energy storage structure 3 completing the energy storage, the connecting rod 2 remains stationary and does not rotate around the axis ss. When the rotating shaft 1 rotates from the first position or the second position to the middle position, the energy storage process of the energy storage structure 3 ends. Further, when the operating mechanism m is in the closed state, the rotating shaft 1 has a tendency to rotate in the first rotation direction and the connecting rod 2 has a tendency to rotate in the second rotation direction, and the first rotation direction and the second rotation direction are opposite to each other; when the operating mechanism m is in the open state, the rotating shaft 1 has a tendency to rotate in the second rotation direction and the connecting rod 2 has a tendency to rotate in the first rotation direction.

[0056] The operating device of this embodiment has a simple operating mechanism m. When switching between the closed state and the open state, the rotating shaft 1 drives the energy storage structure 3 to store energy first. After the rotating shaft 1 rotates to the middle position, the energy storage structure 3 releases energy and drives the rotating shaft 1 and the connecting rod 2 to rotate relative to each other in opposite directions to respectively realize the switching of the working positions. The moving contact 5-1 and the static contact 6-00 can be quickly disconnected and closed through the main contact support 5-0, eliminating or significantly reducing the possibility of arcing when the moving contact 5-1 and the static contact 6-00 are closed and disconnected. Moreover, compared with the existing method of directly driving the main contact support 5-0 through the rotating shaft 1, the operating mechanism m can significantly increase the rotation angle of the connecting rod within a limited space, thereby increasing the movement of the main contact support 5-0 coordinated with it, increasing the opening distance between the moving contact 5-1 and the static contact 6-00, and having good operating performance. It also makes the structure of the operating mechanism m more compact and smaller in size. Moreover, the connecting rod 2 drives the main contact support 5-0 to move linearly through the driving shaft 4, which is beneficial to reducing the space required for the main contact support 5-0 to move.

[0057] Furthermore, the connecting rod 2 and the driving shaft 4 are of an integrated or split structure.

[0058] Furthermore, the rotation angle of the rotating shaft 1 switching between the first position and the second position is 90°, and the rotation angle of the rotating shaft 1 switching from the first position or the second position to the intermediate position is 70°~80° (preferably 75°); that is, when the rotating shaft 1 rotates from the first position to the second position or from the second position to the first position, the rotating shaft 1 needs to rotate 90°, and when the rotating shaft 1 rotates from the first position or the second position to the intermediate position, the rotating shaft 1 needs to rotate 70°~80° (preferably 75°).

[0059] Further, the rotation angle of the connecting rod 2 switching between the third position and the fourth position is 45° to 90° (preferably 60° to 90°, specifically 60°); that is, when the connecting rod 2 rotates from the third position to the fourth position or from the fourth position to the third position, the connecting rod 2 needs to rotate 45° to 90° (preferably 60° to 90°, specifically 60°). It should be pointed out that the rotation angle of the connecting rod 2 switching between the third position and the fourth position can be adjusted as needed, mainly according to the moving stroke of the active contact mechanism 5, and the maximum rotation angle of the connecting rod 2 does not exceed 90°.

[0060] like Figure 4-6 As shown in FIG. 8 , the energy storage structure 3 includes at least one energy storage spring 3-0, and both ends of the energy storage spring 3-0 are respectively connected to the rotating shaft 1 and the connecting rod 2 in a transmission manner. The energy storage spring 3-0 has a dead point position. The rotating shaft 1 rotates from the first position or the second position to the middle position to make the energy storage spring 3-0 move to the dead point position and store maximum energy, that is, the middle position of the rotating shaft 1 corresponds to the dead point position of the energy storage spring 3-0.

[0061] Further, the energy storage spring 3-0 is a linear compression spring, and when the energy storage spring 3-0 is at the dead point, the geometric axis of the linear compression spring intersects and is coplanar with the axis ss. Further, when the energy storage spring 3-0 is at the dead point, its geometric axis intersects perpendicularly with the axis ss.

[0062] As other embodiments, the energy storage spring 3-0 can also be a torsion spring, which includes a spiral portion and two spring arms respectively connected to the spiral portion, the spiral portion is freely arranged, one spring arm is transmission-connected to the rotating shaft 1, and the other spring arm is transmission-connected to the connecting rod 2; when the torsion spring is at the dead point position, the connection between the torsion spring and the rotating shaft 1, the connection between the torsion spring and the connecting rod 2, and the axis ss are intersecting and coplanar.

[0063] Further, the energy storage structure 3 includes two energy storage springs 3-0, and the two energy storage springs 3-0 are arranged on both radial sides of the rotating shaft 1. Further, the two energy storage springs 3-0 are mutually centrally symmetrical structures with the axis ss as the symmetry center.

[0064] Specifically, the connecting rod 2 also includes a connecting rod bearing portion 2a, the connecting rod bearing portion 2a includes a bearing portion connecting bridge 2-2a, and the two bearing portion connecting bridges 2-2a are respectively located on the radial sides of the rotating shaft 1; the rotating shaft 1 includes a rotating shaft body 1-0 and a rotating shaft mounting seat 1-2 that are rotatably arranged around the axis ss, and the two rotating shaft mounting seats 1-2 are arranged on the circumferential side surfaces of the rotating shaft body 1-0 and are located on the radial sides of the rotating shaft body 1-0; the two energy storage springs 3-0 are respectively arranged on the radial sides of the rotating shaft 1, and the two ends of each energy storage spring 3-0 are respectively rotatably connected with the corresponding bearing portion connecting bridge 2-2a and the corresponding rotating shaft mounting seat 1-2. Furthermore, the connecting rod bearing portion 2a also includes a first side plate 2-0a and a second side plate 2-1a of the bearing portion which are arranged relatively at an interval, and both ends of the first side plate 2-0a and the second side plate 2-1a of the bearing portion are connected by a bearing portion connecting bridge 2-2a (that is, one end of the first side plate 2-0a and the second side plate 2-1a of the bearing portion are connected by a bearing portion connecting bridge 2-2a and the other end of the first side plate 2-0a and the second side plate 2-1a of the bearing portion are also connected by a bearing portion connecting bridge 2-2a), and the first side plate 2-0a, the second side plate 2-1a and the bearing portion connecting bridge 2-2a are overall frame-type structures; the rotating shaft 1 is rotatably inserted in the middle of the first side plate 2-0a and the middle of the second side plate 2-1a of the bearing portion, and two energy storage springs 3-0 are arranged between the first side plate 2-0 and the second side plate 2-1 of the bearing portion. It should be pointed out that the connecting rod bearing part 2a can only be provided with the first side plate 2-0a of the bearing part or the second side plate 2-1a of the bearing part, but it will affect the structural strength and stability of the connecting rod 2; or, the connecting rod bearing part 2a can only be provided with one bearing part connecting bridge 2-2a, and the operating mechanism m can only be provided with one energy storage spring 3-0, but it will destroy the symmetry of the overall structure of the operating mechanism m and affect the stability and reliability of the operation of the operating mechanism m.

[0065] The following will be combined Figure 6 and 8 The energy storage process and energy release process of the energy storage spring 3-0 are described as follows:

[0066] One end of the energy storage spring 3 that is transmission-connected to the rotating shaft 1 is the first end of the spring, and the other end that is transmission-connected to the connecting rod 2 is the second end of the spring; during the process in which the rotating shaft 1 is rotated from the first position or the second position to the middle position by an external force, the rotating shaft 1 drives the energy storage spring 3-0 to rotate around the second end of the spring through the first end of the spring, so that the energy storage spring 3-0 is compressed and stores energy, and when the rotating shaft 1 rotates to the middle position, the energy storage spring 3-0 rotates to the dead point position and the energy storage is maximum; the rotating shaft 1 continues to rotate from the middle position to make the energy storage spring 3-0 rotate past the dead point position, and the energy storage spring 3-0 starts to release energy, and the energy storage spring 3-0 acts on the rotating shaft 1 and the connecting rod 2 through the first end of the spring and the second end of the spring respectively to make the two rotate relative to each other (that is, to make the rotating shaft 1 and the connecting rod 2 rotate in opposite directions respectively).

[0067] like Figure 2-3 As shown, when the rotating shaft 1 is in the first position and the second position, it is respectively limited and matched with the housing of the operating device (the housing of the operating device is preferably realized by the main body shell h of the switch body z) to keep the rotating shaft 1 at the corresponding position, that is, when the rotating shaft 1 is in the first position, it is limited and matched with the housing of the operating device to keep the rotating shaft 1 in the first position, and when the rotating shaft 1 is in the second position, it is limited and matched with the housing of the operating device to keep the rotating shaft 1 in the second position. Furthermore, the operating device includes at least one group of first positioning structures, the first positioning structure includes two first positioning surfaces and two first blocking surfaces, of which one is arranged on the rotating shaft 1 and the other is arranged on the housing of the operating device, the two first positioning surfaces are arranged in sequence around the axis ss and are respectively a first closing positioning surface and a first opening positioning surface, the two first blocking surfaces are arranged in sequence around the axis ss and are respectively a first closing blocking surface and a first opening blocking surface, when the rotating shaft 1 is in the first position, the first closing positioning surface and the first opening blocking surface limit cooperation to prevent the rotating shaft 1 from continuing to rotate and keep it in the first position, when the rotating shaft 1 is in the second position, the second closing positioning surface and the second opening blocking surface limit cooperation to prevent the rotating shaft 1 from continuing to rotate and keep it in the second position.

[0068] Specifically, Figure 2-3As shown in , 8-9, the rotating shaft 1 includes a rotating shaft body 1-0 that is rotatable around the axis ss and at least one group of first positioning parts 1-1, the first positioning part 1-1 is arranged on the circumferential side wall of the rotating shaft body 1-0, and the first positioning part 1-1 includes two first positioning surfaces respectively arranged on both sides thereof; the housing of the operating device includes a housing shaft hole h-16 for the rotating shaft 1 to be inserted, and at least one group of shell positioning grooves h-11 is arranged on the side wall of the housing shaft hole h-16, and a first stop surface is arranged at each end of the shell positioning groove h-11, and the first positioning part 1-1 is matched with the housing positioning groove h-11 in a one-to-one manner, and the first positioning part 1-1 is movably inserted into the housing positioning groove h-11. Further, the rotating shaft 1 includes a pair of first positioning parts 1-1 respectively arranged on the radial sides of the rotating shaft body 1-0, and two groups of housing positioning grooves h-11 respectively arranged on the side wall of the housing shaft hole h-16 are arranged on the radial sides of the housing shaft hole h-16, and the two first positioning parts 1-1 are respectively movably inserted into the two housing positioning grooves. Furthermore, the shell shaft hole h-16 is arranged on the upper cover h-1 of the main shell h; specifically, the shell shaft hole h-16 is arranged on the side wall of the upper cover h-1 perpendicular to the axis ss.

[0069] As another embodiment, the first positioning portion 1-1 is arranged on the side wall of the housing shaft hole h-16, and the housing positioning groove h-11 is arranged on the shaft body 1-0.

[0070] As other embodiments, the first positioning portion 1-1 is arranged on the rotating shaft body 1-0, and a stopper cooperating with the first positioning portion 1-1 is provided on the shell of the operating device, and each first positioning portion 1-1 cooperates with two stoppers. For example, the stopper can be arranged on the outside of one axial end of the shell shaft hole h-16.

[0071] like Figure 4-5 As shown, when the connecting rod 2 is in the third position and the fourth position, it is respectively limited and matched with the housing of the operating device to keep the connecting rod 2 at the corresponding position, that is, when the connecting rod 2 is in the third position, it is limited and matched with the housing of the operating device to prevent the connecting rod 2 from continuing to rotate and keep it in the third position, and when the connecting rod 2 is in the fourth position, it is limited and matched with the housing of the operating device to prevent the connecting rod 2 from continuing to rotate and keep it in the fourth position. Further, a pair of side walls of the housing of the operating device are respectively located on both sides of the connecting rod 2 and are respectively the first positioning side wall and the second positioning side wall; when the connecting rod 2 is in the third position and the fourth position, at least one of the two radial ends of the connecting rod 2 is respectively limited and matched with the first positioning side wall and the second positioning side wall. Further, the two radial ends of the connecting rod 2 are respectively the first end of the connecting rod and the second end of the connecting rod. When the connecting rod 2 is in the third position, the first end of the connecting rod is limited and matched with the first positioning side wall, and the second end of the connecting rod is limited and matched with the second positioning side wall. When the connecting rod 2 is in the fourth position, the first end of the connecting rod is limited and matched with the second positioning side wall, and the second end of the connecting rod is limited and matched with the first positioning side wall.

[0072] Specifically, Figure 4-5 As shown, the first positioning side wall and the second positioning side wall are each provided with two groups of shell positioning surfaces h-12, and the four groups of shell positioning surfaces h-12 are the first shell positioning surface, the second shell positioning surface, the third shell positioning surface and the fourth shell positioning surface arranged in sequence around the axis ss, the first shell positioning surface and the second shell positioning surface are arranged on the first positioning side wall, and the third shell positioning surface and the fourth shell positioning surface are arranged on the second positioning side wall; when the connecting rod 2 is in the third position, the first end of the connecting rod abuts against the first shell positioning surface and is limited in fit, and the second end of the connecting rod abuts against the third shell positioning surface and is limited in fit; when the connecting rod 2 is in the fourth position, the first end of the connecting rod abuts against the fourth shell positioning surface and is limited in fit, and the second end of the connecting rod abuts against the second shell positioning surface and is limited in fit. Further, as Figure 4-5 As shown in , 8, 10-11, the rotating shaft 1 is rotatably inserted into the first connecting rod shaft hole in the middle of the first side plate 2-0a of the bearing part of the connecting rod 2, and the rotating shaft 1 and the first side plate 2-0 of the bearing part are cross-arranged, and the two side edges at one end of the first side plate 2-0 of the bearing part are respectively used for limiting cooperation with the first shell positioning surface and the fourth shell positioning surface, and the two side edges at the other end are respectively used for limiting cooperation with the second shell positioning surface and the third shell positioning surface. Furthermore, the driving shaft 4 includes a driving shaft bearing portion 4a arranged on one axial end thereof and respectively located on both radial sides thereof, the driving shaft bearing portion 4a includes a driving bearing carrier plate 4-0a and a driving shaft baffle plate 4-1a, the plane where the driving bearing carrier plate 4-0a is located is perpendicular to the axis ss, and the two driving shaft baffle plates 4-1a are relatively arranged on one side of the driving bearing carrier plate 4-0a and are respectively connected to the driving bearing carrier plate 4-0a by bending; the two ends of the second side plate 2-1a of the bearing portion are respectively matched with the two groups of driving shaft bearing portions 4a, each end of the second side plate 2-1a of the bearing portion is overlapped with the corresponding driving bearing carrier plate 4-0a along the axis ss, and is located between the corresponding two driving shaft baffle plates 4-1a and is limitedly matched with the corresponding driving shaft baffle plate 4-1a to make the connecting rod 2 and the driving shaft 4 rotate synchronously; the four driving shaft baffle plates 4-1a are respectively used for limiting matching with the four groups of shell positioning surfaces h-12. The drive shaft bearing portion 4a is located between the energy storage structure 3 and the contact system in the extending direction of the axis ss, and can also prevent the arc from entering the interior of the operating mechanism m, thereby protecting the metal parts inside the operating mechanism m.

[0073] like Figure 2-5As shown, in the closed state and the open state of the operating device, the rotating shaft 1 and the connecting rod 2 or the driving shaft 4 are limited in cooperation to prevent the rotating shaft 1 and the connecting rod 2 from rotating relative to each other, thereby limiting the unnecessary rotation of the rotating shaft 1 and the connecting rod 2 relative to each other; that is: when the operating device is in the closed state, the rotating shaft 1 is in the first position and the connecting rod 2 is in the third position, and the rotating shaft 1 and the connecting rod 2 are limited in cooperation to prevent the two from rotating relative to each other; when the operating device is in the open state, the rotating shaft 1 is in the second position and the connecting rod 2 is in the fourth position, and the rotating shaft 1 and the connecting rod 2 are limited in cooperation to prevent the two from rotating relative to each other. Furthermore, the operating device includes at least one group of second positioning structures, the second positioning structure includes two second positioning surfaces and two second blocking surfaces, of which one is arranged on the rotating shaft 1 and the other is arranged on the connecting rod 2, the two second positioning surfaces are arranged in sequence around the axis ss and are respectively a second closing positioning surface and a second opening positioning surface, the two second blocking surfaces are arranged in sequence around the axis ss and are respectively a second closing blocking surface and a second opening blocking surface, when the operating device is in the closing state, the second closing positioning surface and the second opening positioning surface are limitedly cooperated to prevent the rotating shaft 1 and the connecting rod 2 from rotating relative to each other, and when the operating device is in the opening state, the second opening positioning surface and the second opening blocking surface are limitedly cooperated to prevent the rotating shaft 1 and the connecting rod 2 from rotating relative to each other.

[0074] Specifically, in this embodiment, when the operating device is in the closed state and the open state, the rotating shaft 1 preferably cooperates with the connecting rod 2 to prevent the rotating shaft 1 and the connecting rod 2 from rotating relative to each other. Fig.10 As shown, the middle part of the second side plate 2-1a of the bearing part of the connecting rod 2 is provided with a second connecting rod shaft hole 2-10a for inserting the rotating shaft 1, and a pair of connecting rod stoppers 2-11a are provided on the side walls of the second connecting rod shaft hole 2-10, and each of the two connecting rod stoppers is provided with a second stop surface; the rotating shaft 1 includes at least one set of second positioning parts 1-3, and the second positioning parts 1-3 are inserted between the two connecting rod stoppers 2-11a and include two second positioning surfaces respectively arranged on both sides thereof. Further, the rotating shaft 1 includes two sets of second positioning parts 1-3, and the two sets of positioning parts 1-3 are arranged on the circumferential side surface of the rotating shaft body 1-0 of the rotating shaft 1 and are located on the radial sides of the rotating shaft body 1, and the two sets of positioning parts 1-3 and the two connecting rod stoppers 2-11a are arranged alternately in sequence around the axis ss.

[0075] As other embodiments, one of the second positioning surface and the second stop surface of the second positioning structure is set on the rotating shaft 1, and the other is set on the driving shaft 4 that rotates synchronously with the connecting rod 2; for example, the rotating shaft 1 still includes the second positioning portion 1-3, and the connecting rod stopper is set on the side wall of the first driving shaft socket 4-0b (to be described later) of the driving shaft 4.

[0076] like Figure 8 , 10As shown in FIG. 12 , in this embodiment, the connecting rod 2 and the driving shaft 4 are of a split structure.

[0077] Furthermore, the connecting rod 2 further comprises a connecting rod connecting portion 2b, which is relatively fixedly connected to the driving shaft 4 along the extending direction of the axis ss, so that the connecting rod 2 and the driving shaft 4 rotate synchronously. Furthermore, the connecting rod connecting portion 2b is plug-fitted with the driving shaft 4.

[0078] Furthermore, the connecting rod 2 is in a T-shaped structure as a whole, and its connecting rod connecting portion 2b extends along the axis ss, and one axial end of the connecting rod connecting portion 2b is connected to the middle of the connecting rod bearing portion 2a. Specifically, one axial end of the connecting rod connecting portion 2b is connected to the middle of the second side plate 2-1a of the bearing portion of the connecting rod bearing portion 2a.

[0079] Further, the connecting rod connecting part 2b also includes at least one group of connecting rod claws 2-1b arranged on its circumferential side surface; the driving shaft 4 also includes a driving shaft driving part 4b connected to the active contact mechanism 5 by transmission, and the driving shaft driving part 4b includes a second driving shaft plug hole 4-2b, and at least one group of driving shaft connecting grooves 4-3b are arranged on the side wall of the second driving shaft plug hole 4-2b, and the driving shaft connecting grooves 4-3b are used in a one-to-one manner with the connecting rod claws 2-1b; the connecting rod connecting part 2b is inserted into the second driving shaft plug hole 4-2b, and the connecting rod claws 2-1b are inserted into the driving shaft connecting grooves 4-3b to prevent the connecting rod 2 and the driving shaft 4 from rotating relative to each other. Further, the connecting rod claws 2-1b and the driving shaft connecting grooves 4-3b are interference fit to ensure that the connecting rod 2 and the driving shaft 4 are reliably connected together.

[0080] As other embodiments, the connecting rod connecting part 2b can also be a plurality of claws arranged on the second side plate 2-1a of the bearing part and arranged around the axis ss, and the corresponding drive shaft driving part 4b is provided with a plurality of clamping holes arranged around the axis ss, and the clamping claws and the clamping holes are one-to-one snap-fitted.

[0081] As another embodiment, the connecting rod connecting portion 2b is a polygonal columnar structure, and the driving shaft driving portion 4b is provided with a polygonal socket, and the two are plugged in and matched, which can achieve a fixed connection and ensure synchronous rotation of the two.

[0082] Specifically, the connecting rod connecting part 2b is a cylindrical structure; the driving shaft 4 includes a first driving shaft plug hole 4-0b, a driving shaft partition wall 4-1b and a second driving shaft plug hole 4-2b which are coaxially arranged from the inside to the outside, the first driving shaft plug hole 4-0b is a cylindrical plug hole, the driving shaft partition wall 4-1b is a cylindrical structure, and the second driving shaft plug hole 4-2b is an annular plug hole; the connecting rod connecting part 2b is inserted into the second driving shaft plug hole 4-2b and the driving shaft partition wall 4-1b is inserted into the connecting rod connecting part 2b, and the rotating shaft 1 is rotatably inserted into the first driving shaft plug hole 4-0b, forming a reliable limit for the rotating shaft 1, ensuring that the rotating shaft 1 rotates reliably and stably around the axis ss. Further, two driving shaft bearing parts 4a are provided on one axial end of the driving shaft driving part 4b, and the two driving shaft bearing parts 4a are respectively arranged on the radial sides of the driving shaft driving part 4b.

[0083] like Fig. 9 FIG. 1 is an embodiment of the rotating shaft 1 .

[0084] The rotating shaft 1 includes a rotating shaft body 1-0 and a first positioning portion 1-1, a rotating shaft mounting seat 1-2 and a second positioning portion 1-3 arranged on the circumferential side of the rotating shaft body 1-0. The first positioning portion 1-1, the rotating shaft mounting seat 1-2 and the second positioning portion 1-3 are arranged in sequence along the axis of the rotating shaft body 1-0. Further, two groups of the first positioning portions 1-1 are symmetrically arranged on the radial side of the rotating shaft body 1-0, two groups of the rotating shaft mounting seats 1-2 are symmetrically arranged on the radial sides of the rotating shaft body 1-0, and two groups of the second positioning portions 1-3 are symmetrically arranged on the radial sides of the rotating shaft body 1-0; on the projection of the rotating shaft 1 perpendicular to the axis ss (that is, the axis of the rotating shaft body 1-0), the two groups of the first positioning portions 1-1 overlap with the two groups of the second positioning portions 1-3 respectively, and the connecting line of the two groups of the rotating shaft mounting seats 1-2 crosses with the connecting line of the two groups of the first positioning portions 1-1.

[0085] like Fig. 9 and 10 FIG. 1 is an embodiment of the connecting rod 2 .

[0086] The connecting rod 2 is an overall T-shaped structure, and the first side plate 2-0a of the connecting rod bearing part 2a, the second side plate 2-1a of the connecting rod bearing part 2a and the connecting rod connecting part 2b are arranged in sequence along the axis ss, one end of the connecting rod connecting part 2b is connected to the middle part of the second side plate 2-1a of the bearing part and a connecting rod claw 2-1b is provided on the circumferential side surface of the other end, a first connecting rod shaft hole for the rotating shaft 1 to pass through is provided in the middle part of the first side plate 2-0a of the bearing part, and a second connecting rod shaft hole 2-10a for the rotating shaft 1 to pass through is provided in the middle part of the second side plate 2-1a of the bearing part, the first side plate 2-0a of the bearing part, the second side plate 2-1a of the bearing part and the connecting bridge 2-2a of the bearing part are an overall frame-shaped structure, and the connecting rod connecting part 2b is a cylindrical structure.

[0087] like Figure 6 , 8 12-14 shows a method for realizing that the driving shaft 4 drives the main contact support 5-0 to move linearly along the axis ss.

[0088] The drive shaft driving part 4b of the drive shaft 4 is connected to the active contact mechanism 5 through at least one first transmission structure, the first transmission structure includes a drive groove 4-4b and a transmission part 5-000, the drive groove 4-4b is a spiral groove and its axis coincides with the axis ss, the transmission part 5-000 is movably arranged in the drive groove 4-4b, and one of the drive groove 4-4b and the transmission part 5-000 is arranged on the drive shaft 4 and the other is arranged on the main contact support 5-0. Further, in the first transmission structure, the drive groove 4-4b is arranged on the circumferential side of the drive shaft driving part 4b, and the transmission part 5-000 is arranged on the main contact support 5-0 of the active contact mechanism 5.

[0089] Further, the main contact support 5-0 includes a support driven part 5-00, two groups of support driven parts 5-00 are arranged oppositely and are respectively located on both sides of the radial direction of the drive shaft driving part 4b, and the drive shaft driving part 4b is respectively connected to the two groups of support driven parts 5-00 through two groups of first transmission structures, and the driving grooves 4-4b of the two groups of first transmission structures are mutually symmetrical structures with the axis ss as the symmetry center. Further, the support driven part 5-00 includes a transmission arm 5-001 and a transmission part 5-000 arranged on the transmission arm 5-001, and the transmission parts 5-000 of the two support driven parts 5-00 are arranged oppositely and are respectively inserted into the corresponding driving grooves 4-4b.

[0090] As another embodiment, in the first transmission structure, the driving groove 4-4b is arranged on the supporting driven part 5-00, and the transmission part 5-000 is arranged on the circumferential side surface of the driving shaft driving part 4b.

[0091] As other embodiments, the drive shaft 4 and the main contact support 5-0 are matched through a threaded screw structure, that is, the first transmission structure is a threaded screw structure, for example: a threaded hole extending along the axis ss is provided in the middle of one end of the drive shaft driving part 4b facing the active contact mechanism 5, and a screw is provided on the main contact support 5-0, and the threaded hole is matched with the screw thread; or, a screw is provided at one end of the drive shaft driving part 4b facing the active contact mechanism 5, and a threaded hole is provided on the main contact support 5-0.

[0092] As other embodiments, a driving hole is provided in the middle of one end of the driving shaft driving portion 4b facing the active contact mechanism 5, a driving groove 4-4b is provided on the side wall of the driving hole, a transmission portion 5-000 is provided on the support passive portion 5-00, the support passive portion 5-00 is inserted into the driving hole and the transmission portion 5-000 is movably inserted in the driving groove 4-4b; or, the driving shaft driving portion 4b is provided with the transmission portion 5-000, the support passive portion 5-00 is provided with the driving hole, a driving groove 4-4b is provided on the side wall of the driving hole, and one end of the driving shaft driving portion 4b is provided with the transmission portion 5-000 is inserted into the driving hole and the transmission portion 5-000 is movably inserted in the driving groove 4-4b.

[0093] like Figure 8 , 11 -12 shows an embodiment of the drive shaft 4.

[0094] In the driving shaft 4, two driving shaft bearing parts 4a are symmetrically arranged on the radial sides of one axial end of the driving shaft driving part 4b, one end of the driving shaft bearing plate 4-0a of the driving shaft bearing part 4a is connected to the driving shaft driving part 4b, and two driving shaft baffles 4-1a of the driving shaft bearing part 4a are relatively spaced and arranged on the side of the corresponding driving shaft bearing plate 4-0a facing the connecting rod 2, and the driving shaft baffle 4-1a is connected to the corresponding driving shaft bearing plate 4-0a at a right angle, and the middle part of the driving shaft driving part 4b is provided with a driving shaft first plug hole 4-0b, a driving shaft partition wall 4-1b and a driving shaft first plug hole 4-0b, which are coaxially arranged in sequence from the inside to the outside. There are two holes 4-2b, and a drive shaft connecting groove 4-3b is provided on the outer side wall of the second hole 4-2b of the drive shaft (that is, the side wall of the second hole 4-2b opposite to the drive shaft partition wall 4-1b), and the drive shaft connecting groove 4-3b extends along the extension direction of the axis ss. The two drive shaft connecting grooves 4-3b are symmetrically arranged on the radial sides of the drive shaft partition wall 4-1b, and a drive groove 4-4b is provided on the circumferential side of the drive shaft driving part 4b. The drive groove 4-4b is a spiral groove and its axis coincides with the axis ss. The axes of the two groups of drive shaft spiral grooves 4-4b coincide and are centrally symmetrical structures with the axis ss as the center of symmetry.

[0095] like Figure 4-6 As shown, when the active contact mechanism 5 and the main static contact mechanism 6 are closed, the active contact mechanism 5 moves along the extension direction of the axis ss toward the side where the upper cover h-1 is located; when the active contact mechanism 5 and the main static contact mechanism 6 are disconnected, the active contact mechanism 5 moves along the extension direction of the axis ss toward the side where the base h-2 is located. Fig.15 and 23As shown, the transmission arm 5-001 supporting the driven part 5-00 is provided with a main rail 5-0010 and a baffle 5-0011, and the baffle 5-0011 is arranged at one end of the main rail 5-0010 and is connected to the main rail 5-0010 by bending; the base h-2 of the main shell h is provided with a main guide groove h-20; the main rail 5-0010 is slidably arranged in the main guide groove h-20; when the switch device is opened (that is, the operating device or operating mechanism m is opened), the baffle 5-0010 abuts against one end of the side wall of the main guide groove h-20 to limit the main contact support 5-0 in the disconnected position, thereby preventing the main contact support 5-0 from directly hitting the bottom wall of the base h-2, thereby extending the service life of the switch device.

[0096] Further, such as Figure 1 and 14 As shown, the main contact support 5-0 is also provided with a switch-on / off indication structure 5-0013; the housing of the operating device also includes an indication window h-10 arranged on its side wall; the switch-on / off indication structure 5-0013 cooperates with the indication window h-10 to indicate the current position of the main contact support 5-0, which is beneficial for the operator to judge the current position of the main contact support 5-0, so as to judge whether the moving contact 5-1 of the moving contact mechanism 5 is disconnected from the static contact 6-00, thereby improving the safety of electricity use. Further, the switch-off indication structure 5-0013 includes a switch-on indicator and a switch-off indicator. When the active contact mechanism 5 is in the closed position (i.e., when the active contact mechanism 5 is closed with the main static contact mechanism 6), the switch-on indicator is visible through the indication window h-10, and when the active contact mechanism 5 is in the disconnected position (i.e., when the active contact mechanism 5 is disconnected with the main static contact mechanism 6), the switch-off indicator is visible through the indication window h-10.

[0097] Specifically, the switch opening and closing indication structure 5-0013 is arranged on the support actuated portion 5-00 of the main contact support 5-0; the indication window h-10 is arranged on the side wall of the main housing h of the switch body z. Further, the indication window h-10 is arranged on the side wall of the upper cover h-1 of the main housing h.

[0098] As other embodiments, when the active contact mechanism 5 is in the closed position, the opening and closing indication structure 5-0013 is opposite to the indication window h-10 and is visible through it; when the active contact mechanism 5 is in the open position, the opening and closing indication structure 5-0013 is misaligned with the indication window h-10 and cannot be seen through the indication window h-10.

[0099] like Figure 13-16As shown, the main contact support 5-0 also includes at least one group of support bearing parts 5-01, the support bearing parts 5-01 are connected to the support driven part 5-00 and are used in a one-to-one cooperation with the moving contact 5-1, and the support bearing parts 5-01 are used to bear the moving contact 5-1. Further, the support bearing parts 5-01 and the support driven part 5-00 are an integrated or split structure; in this embodiment, the support bearing parts 5-01 and the support driven part 5-00 are preferably an integrated structure.

[0100] Specifically, the main contact support 5-0 is provided with two or more groups of support bearing parts 5-01, and the number of the support bearing parts 5-01 is adjusted according to the number of phases of the switch device, for example: if the switch device is a single-phase switch, the number of the support bearing parts 5-01 is 1, if the switch device is a two-phase switch, the number of the support bearing parts 5-01 is 2, if the switch device is a three-phase switch, the number of the support bearing parts 5-01 is 3, and if the switch device is a three-phase four-wire switch, the number of the support bearing parts 5-01 is 4. Further, each of the support bearing parts 5-01 is an integrated structure, which is conducive to improving the overall structural strength of the main contact support 5-0.

[0101] As other embodiments, the support passive part 5-00 and the support bearing part 5-01 are split structures, which makes it easy to adjust the number of support bearing parts 5-01 according to actual needs, thereby improving the versatility of the main contact support 5-0, but it also leads to the defect of an increased number of parts.

[0102] like Figure 6 and 8 As shown, a layout of the operating device is shown:

[0103] The rotating shaft 1, connecting rod 2, driving shaft 4 and main contact support 5-0 are arranged in sequence along the extension direction of the axis ss; the connecting rod 2 is a T-shaped structure as a whole, and its connecting rod bearing part 2a is arranged crosswise with the axis ss; the two groups of energy storage springs 3-0 of the energy storage structure 3 are respectively arranged on the radial sides of the rotating shaft 1, and the two ends of each group of energy storage springs 3 are respectively connected to the corresponding bearing part connecting bridge (2-2a) of the rotating shaft 1 and the connecting rod 2; the two groups of driving shaft bearing parts 4a of the driving shaft 4 are arranged on the radial sides of the axial end of the driving shaft driving part 4b, and the connecting rod bearing part 4a of the driving shaft 4 is arranged on the radial sides of the axial end of the driving shaft driving part 4b. The two ends of the second side plate 2-1a of the bearing part of the part 2a are respectively limited by the two groups of drive shaft bearing parts 4a to prevent the connecting rod 2 and the drive shaft 4 from rotating relative to each other, and the connecting rod connecting part 2b is inserted in the middle of the drive shaft driving part 4b and limited by it to prevent the connecting rod 2 and the drive shaft 4 from rotating relative to each other; the rotating shaft 1 and the connecting rod bearing part 2a are arranged in a cross shape, and one end of the rotating shaft 1 passes through the connecting rod bearing part 2a and is rotatably inserted in the middle of the drive shaft 4; the two groups of supporting driven parts 5-00 of the main contact support 5-0 are respectively arranged on the radial sides of the drive shaft driving part 4b and are transmission-connected thereto.

[0104] like Figure 13-17 As shown, an embodiment of the moving contact 5-1 and an assembly method of the moving contact 5-1 and the main contact support 5-0 are shown.

[0105] like Figure 13-14 As shown in Figures 17, the moving contact 5-1 includes two moving touch plates 5-10 relatively arranged, and two gaps are formed at both ends of the two moving touch plates 5-10 for the static contact blade 6-000 of the static contact 6-00 to be inserted. Further, in the moving contact 5-1, the two moving touch plates 5-10 are relatively spaced apart. Further, the moving contact 5-1 also includes a magnetic conductive plate 5-11, and the two magnetic conductive plates 5-11 are respectively arranged on both sides of the two moving touch plates 5-10 and are respectively stacked with the two moving touch plates 5-10. Further, the moving touch plate 5-10 is provided with a moving touch plate limiting platform 5-101, and the magnetic conductive plate 5-11 is provided with a magnetic conductive plate limiting hole 5-110, and the magnetic conductive plate limiting platform 5-101 is plugged and limited with the corresponding magnetic conductive plate limiting hole 5-110 to limit the relative movement of the corresponding moving touch plate 5-10 and the magnetic conductive plate 5-11, thereby ensuring reliable and stable assembly of the two.

[0106] Furthermore, the active contact mechanism 5 also includes a contact spring 5-2, each moving contact 5-1 cooperates with two groups of contact springs 5-2, and each contact spring 5-2 is arranged between the corresponding magnetic conductive plate 5-11 and the main contact support 5-0. Of course, the moving contact 5-1 may not be provided with a magnetic conductive plate 5-11, and each contact spring 5-2 is arranged between the corresponding moving contact plate 5-10 and the main contact support 5-0.

[0107] like Figure 13-16As shown, the support bearing part 5-01 includes a contact socket 5-010, two contact sockets 5-010 are arranged at a relative interval and a contact partition wall 5-011 is arranged between the two contact sockets 5-010, and two moving touch plates 5-10 of the moving contact 5-1 are inserted into the two contact sockets 5-010 and the two moving touch plates 5-10 are stacked together with the contact partition wall 5-011. Further, a contact positioning platform 5-013 is provided on each side of the contact partition wall 5-011, and the moving touch plate 5-10 is provided with a moving touch plate positioning hole 5-100. The moving touch plate positioning platform 5-101 and the contact positioning platform 5-013 are plugged and limited to ensure reliable limitation between the moving touch plate 5-10 and the main contact support 5-0, and avoid displacement of the moving contact 5-1 and the static contact 6-00 during the closing and opening process, thereby ensuring working reliability. Furthermore, a supporting spring positioning platform 5-014 is provided on the side wall of the contact socket 5-010 opposite to the contact partition wall 5-011, and the magnetic plate 5-11 is provided with two groups of magnetic plate spring positioning platforms, and the two magnetic plate positioning platforms are arranged opposite to the two magnetic plate limiting holes; the contact spring 5-2 is a linear compression spring, one end of which is sleeved on the corresponding supporting spring positioning platform 5-014, and the other end is clamped between the corresponding two magnetic plate spring positioning platforms.

[0108] As other embodiments, the magnetic conductive plate 5-11 can also be provided with a magnetic conductive plate spring positioning platform, and the contact spring 5-2 is a linear compression spring, one end of which is sleeved on the corresponding support spring positioning platform 5-014 and the other end is sleeved on the corresponding magnetic conductive plate spring positioning platform.

[0109] As another embodiment, the contact spring 5-2 is a V-shaped spring sheet, two ends of which are respectively pressed against the two ends of the corresponding magnetic conductive plate 5-11 and the middle part is pressed against the side wall of the contact socket 5-010.

[0110] like Figure 18-20 The figure shows an embodiment of the main static contact mechanism 6.

[0111] The main static contact mechanism 6 includes two sets of static contact assemblies 6-0 arranged opposite to each other, each set of static contact assemblies 6-0 includes static contacts 6-00, and the two static contacts 6-00 are respectively used to close and disconnect with the two ends of the moving contact 5-1 of the active contact mechanism 5. Further, in the main static contact mechanism 6, the two static contacts 6-00 have the same structure, which is conducive to reducing the types of parts.

[0112] Specifically, the static contact 6-00 is an L-shaped structure, which includes a static contact blade 6-000 and a static wiring board 6-001, and the static contact blade 6-000 is bent and connected to the static wiring board 6-001 and is an integrated structure. Further, the plane where the static wiring board 6-001 is located is perpendicular to the axis ss, that is, perpendicular to the moving direction of the active contact mechanism 5.

[0113] Furthermore, the static contact assembly 6-0 also includes a terminal block 6-01 used in conjunction with the static terminal board 6-001 of the static contact 6-00. Furthermore, the terminal block 6-01 includes a wiring frame 6-010 and a wiring screw 6-011, the wiring screw 6-011 is threadedly connected to the wiring frame 6-010, and the static terminal board 6-001 is inserted into the wiring frame 6-010; the wiring screw 6-011 is screwed by an external force to drive the wiring frame 6-010 to move along the axis of the wiring screw 6-011 (the axis of the wiring screw 6-011 is preferably coplanar with the axis ss and parallel and spaced apart), and the external wire is pressed between the wiring frame 6-010 and the static terminal board 6-001.

[0114] like Figure 7 , 18 As shown in , 21, and 24, the switch body z also includes at least one group of arc extinguishing mechanisms, the arc extinguishing mechanism includes an arc extinguishing chamber 7 and a static contact 6-00 used in conjunction with each other, the moving contact 5-1 moves along a first direction to close and disconnect with the static contact 6-00, and the first direction is the same as the extension direction of the axis ss and the movement direction of the moving contact mechanism 5; the arc extinguishing chamber 7 includes at least two arc extinguishing grids 7-1 arranged side by side and spaced apart along the first direction; the static terminal plate 6-001 of the static contact 6-00 is located on one side of the arc extinguishing chamber 7 and is side by side with each arc extinguishing grid 7-1 along the first direction, the static contact knife 6-000 extends along the first direction, one end is connected to the static terminal plate 6-001 by a bend and the other end extends to the arc entrance of the arc extinguishing chamber 7. In the arc extinguishing mechanism, since the static contact 6-00 is an L-shaped structure, the electromagnetic force at the bent connection between the static terminal plate 6-001 of the static contact 6-00 and the static contact blade 6-000 drives the arc separated by the static contact 6-00 and the moving contact 5-1 to move into the arc extinguishing chamber 7, ensuring that the arc is completely or mostly extinguished in the arc extinguishing chamber 7, and preventing the arc from moving toward the operating mechanism m. Further, the arc extinguishing chamber 7 includes an arc inlet and an exhaust port, and the arc inlet and the exhaust port are arranged opposite to each other.

[0115] Specifically, the switch body z includes two or more groups of arc extinguishing mechanisms, and the number of arc extinguishing mechanisms is the same as the number of static contacts 6 - 00 , that is, each static contact 6 - 00 cooperates with an arc extinguishing chamber 7 .

[0116] Furthermore, the plane where the static wiring board 6-001 is located is perpendicular to the first direction, which is beneficial to reducing the installation space required for the arc extinguishing mechanism. Furthermore, the plane where the static contact blade 6-000 is located is parallel to the first direction and perpendicular to the plane where the static wiring board 6-001 is located.

[0117] Furthermore, the arc extinguishing grid 7-1 of the arc extinguishing chamber 7 adjacent to the static wiring board 6-001 is the first grid, and the side of the first grid facing the static wiring board 6-001 is the first grid side; the end of the static contact knife 6-000 extending toward the arc inlet of the arc extinguishing chamber 7 is flush with the first grid side. The above-mentioned design is conducive to reducing the number of arc extinguishing grids 7-1 required for the arc extinguishing chamber 7, facilitating the transfer of the arc root on the static contact knife 6-000 to the arc extinguishing grid 7-1, and improving the arc extinguishing efficiency.

[0118] Further, the arc extinguishing chamber 7 also includes two arc extinguishing chamber partitions 7-0 arranged at a relative interval, each arc extinguishing grid 7-1 is arranged between the two arc extinguishing chamber partitions 7-0 and both ends are fixedly connected to the two arc extinguishing chamber partitions 7-0. Further, the arc extinguishing grid 7-1 includes two groups of grid foot 7-11 respectively arranged at both ends thereof, the arc extinguishing chamber partition 7-0 includes a partition hole arranged thereon, and the grid foot 7-11 is inserted into the corresponding partition hole.

[0119] Furthermore, the arc extinguishing grid 7-1 includes two arc extinguishing grooves 7-100 arranged side by side and spaced apart from each other. The two arc extinguishing grooves 7-100 of each arc extinguishing grid 7-1 are arranged side by side in a first direction to form two arc extinguishing channels arranged side by side. The two moving contact plates 5-10 of the moving contact 5-1 move in the two arc extinguishing channels respectively at one end cooperating with the static contact 6-00.

[0120] Furthermore, the arc extinguishing mechanism further includes an arc baffle, which is used to be arranged between the arc extinguishing chamber 7 and the metal parts of the operating mechanism m (such as the rotating shaft 1 and the energy storage spring 3), so as to prevent the arc from directly spraying onto the metal parts of the operating mechanism m, thereby protecting the operating mechanism m, extending the service life of the operating mechanism m, and preventing the operating mechanism m from short-circuiting with the contact system of the switch device, thereby ensuring the safety of electricity use. Specifically, the arc baffle is implemented by the drive shaft bearing portion 4a of the drive shaft 4.

[0121] like Figure 6 and 23 As shown, the base h-2 of the main shell h includes a contact cavity h-28 and a base terminal slot h-25. The contact cavity h-28 is arranged one-to-one with the contact system and used in conjunction with it. The contact system and the arc extinguishing chamber 7 are both arranged in the contact cavity h-28. The base terminal slot h-25 is arranged one-to-one with the terminal 6-01 of the static contact assembly 6-0 and used in conjunction with it. An insulating partition is provided between the contact cavity h-28 and the base terminal slot h-25; the exhaust port of the arc extinguishing chamber 7 is opposite to the corresponding insulating partition, and an exhaust channel h-27 is provided between the base terminal slot h-25 and the bottom plate of the base h-2, and the exhaust port of the arc extinguishing chamber 7 is connected to the external environment through the exhaust channel h-27.

[0122] Further, such as Fig. 22 and23 As shown, the upper cover h-1 includes a plurality of upper cover partitions h-13 extending toward the base h-2; the base h2 includes a plurality of base main jacks h-220; the upper cover partitions h-13 are used to be inserted into the base main jacks h-220; a base terminal partition h-22 is provided between adjacent base terminal slots h-25 of the base h-2, the base main jacks h-220 are provided in the base terminal partitions h-22, and the upper cover partitions h-13 cooperate with the base terminal partitions h-22, which is beneficial to improve the insulation between adjacent wiring terminals 6-01. Furthermore, the upper cover h-1 also includes a plurality of upper cover terminal slots h-15, the upper cover terminal slots h-15 and the base terminal slots h-25 are used in a one-to-one manner, and upper cover partitions h-13 are provided between adjacent upper cover terminal slots h-15.

[0123] Further, such as Figure 6 and 23 As shown, the base h-2 also includes a contact cavity partition wall, a contact cavity partition wall is provided between adjacent contact cavities h-28, a partition wall avoidance groove for avoiding the main contact support 5-0 is provided in the middle of the contact cavity partition wall, and a group of auxiliary guide grooves h-24 are respectively provided on a pair of side walls of the partition wall avoidance groove; the main contact support 5-0 also includes an auxiliary guide rail 5-02, and auxiliary guide rails 5-02 are provided on both sides of the connection between adjacent support bearing parts 5-01, and the main contact support 5-0 is inserted in the partition wall avoidance groove, and the auxiliary guide groove h-24 cooperates with the auxiliary guide rail 5-2 sliding limit, which can not only realize the isolation of adjacent contact cavities h-28 and improve the phase-to-phase insulation, but also improve the stability and reliability of the action of the main contact support 5-0.

[0124] Further, such as Fig. 22 and 23 As shown, the upper cover h-1 also includes a plurality of upper cover pins h-14 extending toward the base h-2, and the base h2 includes a plurality of base sub-holes h-26; the upper cover pins h-14 are used to be inserted into the base sub-holes h-26 to achieve the fixed connection between the upper cover h-1 and the base h-2, and the operation is simple. Further, two upper cover pins h-14 are provided on each of the pair of side walls of the upper cover h-1, and the four upper cover pins h-14 are located at the four vertices of a rectangle, and two base sub-holes h-26 are provided on each of the pair of side walls of the base h-2, and the four base sub-holes h-26 are located at the four vertices of a rectangle.

[0125] like Figure 2 , 4 -6 shows a layout of the switch device of this embodiment.

[0126] In the switch device of this embodiment, the upper cover h-1 and the base h-2 of the main housing h are relatively assembled together along the height direction d3 of the switch device, the operating mechanism m and the main contact support 5-0 are arranged in sequence along the height direction d3 of the switch device, the switch body z and the auxiliary module f are arranged side by side along the width direction d2 of the switch device, and the two static contacts 6-00 of the contact system of the switch body z are arranged side by side along the length direction d1 of the switch device and are located on both sides of the main contact support 5-0. Further, the switch body z includes two or more contact systems, and each contact system is arranged side by side along the width direction d2 of the switch device.

[0127] 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 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 a limitation on 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.

[0128] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be 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. An arc extinguishing mechanism, comprising an arc extinguishing chamber (7) and a stationary contact (6-00) used in conjunction with each other, wherein the arc extinguishing chamber (7) comprises at least two arc extinguishing grids (7-1) arranged side by side and spaced apart along a first direction; characterized in that: The static contact (6-00) comprises a static contact blade (6-000) and a static wiring board (6-001) connected in a bent manner, the static contact blade (6-000) and the static wiring board (6-001) are in an L-shaped structure as a whole, the static wiring board (6-001) is located on one side of the arc extinguishing chamber (7) and is arranged side by side with each arc extinguishing grid (7-1) along a first direction, and the static contact blade (6-000) extends along the first direction, one end of which is connected to the static wiring board (6-001) in a bent manner and the other end of which extends toward the arc entrance of the arc extinguishing chamber (7).

2. The arc extinguishing mechanism according to claim 1, characterized in that: The plane where the static terminal plate (6-001) is located is perpendicular to the first direction.

3. The arc extinguishing mechanism according to claim 2, characterized in that: The plane where the static contact blade (6-000) is located is parallel to the first direction and perpendicular to the plane where the static terminal plate (6-001) is located.

4. The arc extinguishing mechanism according to claim 1, characterized in that: The arc extinguishing grid (7-1) of the arc extinguishing chamber (7) adjacent to the static wiring board (6-001) is a first grid, and the side of the first grid facing the static wiring board (6-001) is the first grid side; the end of the static contact knife (6-000) extending toward the arc inlet of the arc extinguishing chamber (7) is flush with the first grid side.

5. The arc extinguishing mechanism according to claim 1, characterized in that: The arc extinguishing chamber (7) further comprises two arc extinguishing chamber partition plates (7-0) arranged relatively at a distance, and each arc extinguishing grid plate (7-1) is arranged between the two arc extinguishing chamber partition plates (7-0) and has two ends respectively fixedly connected to the two arc extinguishing chamber partition plates (7-0).

6. The arc extinguishing mechanism according to claim 5, characterized in that: The arc extinguishing grid (7-1) comprises two groups of grid foots (7-11) respectively arranged at two ends thereof, and the arc extinguishing chamber partition (7-0) comprises partition holes arranged thereon, and the grid foots (7-11) are inserted into the corresponding partition holes.

7. The arc extinguishing mechanism according to claim 1, characterized in that: The static contact (6-00) is an integrated structure.

8. The arc extinguishing mechanism according to claim 1, characterized in that: The arc extinguishing mechanism also includes a moving contact (5-1) arranged to move along a first direction, and the moving contact (5-1) is plugged into and closed with the static contact (6-00); one end of the static wiring board (6-001) is bent and connected to the static contact blade (6-000), one end of the moving contact (5-1) is used for plugging and matching with the static contact blade (6-000), and the other end of the static wiring board (6-001) and the other end of the moving contact (5-1) extend in two opposite directions.

9. The arc extinguishing mechanism according to claim 8, characterized in that: The moving contact (5-1) comprises two moving contact plates (5-10) arranged opposite to each other, and when the moving contact (5-1) and the stationary contact (6-00) are closed, the stationary contact blade (6-000) is inserted between the two moving contact plates (5-10) and clamped; the arc extinguishing grid (7-1) comprises two arc extinguishing grooves (7-100) arranged side by side and spaced apart, and the two arc extinguishing grooves (7-100) of each arc extinguishing grid (7-1) form two arc extinguishing channels arranged side by side, and one end of the two moving contact plates (5-10) that cooperate with the stationary contact (6-00) moves in the two arc extinguishing channels respectively.

10. The arc extinguishing mechanism according to claim 1, characterized in that: The arc extinguishing mechanism further comprises an arc baffle, which is used to be arranged between the arc extinguishing chamber (7) and a metal part of an operating mechanism (m) of the switch device.

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