CN110164724B

CN110164724B - Automatic change-over switch electric appliance

Info

Publication number: CN110164724B
Application number: CN201910445880.6A
Authority: CN
Inventors: 洪诗长; 黄文体; 郭德鑫; 叶晨晖
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2024-02-23
Anticipated expiration: 2039-05-27
Also published as: CN110164724A

Abstract

The invention relates to the technical field of low-voltage electrical appliances, in particular to an automatic transfer switching electrical appliance, which comprises at least one group of contact systems, wherein each group of contact systems comprises a moving contact assembly, a load end contact, a first power contact and a second power contact, the load end contact is positioned between the first power contact and the second power contact, and each group of contact systems is correspondingly matched with an arc extinguishing chamber; the first grid plate group and the fourth grid plate group are respectively arranged between the load end contact and the first power contact; the automatic transfer switching device has the advantages of simple structure of the arc extinguishing chamber and good arc extinguishing performance.

Description

Automatic change-over switch electric appliance

Technical Field

The invention relates to the technical field of piezoelectric devices, in particular to an automatic transfer switching device.

Background

At present, a plurality of important occasions adopt automatic transfer switching devices to supply power, and a load circuit is automatically transferred from one power supply to the switching devices of the other circuits, so that the reliability of the power supply has very important requirements, and the reliability of products in an emergency power supply system is particularly important.

The existing three-section rotary plug-in automatic transfer switching device has the following problems:

most products are completely dependent on the switching speed of a driving motor, and the products cannot enable the contact to be quickly switched on and off, so that the switching on and off capacity is not high.

The installation of explosion chamber and fixed knot construct complicacy, and the arc extinguishing effect is not good, and the high-temperature gas that the arc extinction produced can not in time discharge automatic transfer switch electrical apparatus.

The moving contact assembly of the contact system has a complex structure, and the moving contact is not reliably installed, so that the action performance of the automatic transfer switch electrical appliance is affected.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an automatic transfer switching device, wherein an arc extinguishing chamber of the automatic transfer switching device is simple in structure and good in arc extinguishing performance.

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

an automatic transfer switching device comprises at least one group of contact systems 3020, each group of contact systems 3020 comprising a moving contact assembly 30a, and a load end contact 2a, a first power contact 2b and a second power contact 2c which are used together with the moving contact assembly 30a, wherein the load end contact 2a is positioned between the first power contact 2b and the second power contact 2c, and the moving contact assembly 30a is rotated to conduct the load end contact 2a and the first power contact 2b, or to conduct the load end contact 2a and the second power contact 2 c;

Further comprising arc extinguishing chambers 3b cooperating with contact systems 3020, each set of contact systems 3020 cooperating with one arc extinguishing chamber 3 b; four grating sheet groups are arranged in the arc extinguishing chamber 3b, and the first grating sheet group 31b0, the second grating sheet group 31b1, the third grating sheet group 31b2 and the fourth grating sheet group 31b3 are arranged at intervals in sequence; the first grid set 31b0 is disposed on one side of the second power contact 2c, the second grid set 31b1 and the third grid set 31b2 are disposed on two sides of the load end contact 2a, the fourth grid set 31b3 is disposed on one side of the first power contact 2b, the first grid set 31b0 and the second grid set 31b1 are located between the second power contact 2c and the load end contact 2a, and the third grid set 31b2 and the fourth grid set 31b3 are located between the load end contact 2a and the first power contact 2 b.

Preferably, the moving contact assembly 30a includes two moving contacts, and when the automatic transfer switch is in the double-break state, one moving contact is located between the second power contact 2c and the load end contact 2a and between the first grid set 31b0 and the second grid set 31b1, and the other moving contact is located between the load end contact 2a and the first power contact 2b and between the third grid set 31b2 and the fourth grid set 31b3;

When the automatic transfer switching device is in a double-switching-off state, the moving contact assembly 30a rotates in the direction D1, so that the two moving contacts are respectively contacted and conducted with the load end contact 2a and the second power contact 2c, and the automatic transfer switching device enters a second power switching-on state; the movable contact assembly 30a rotates in the direction D2, so that the two movable contacts are respectively contacted and conducted with the load end contact 2a and the first power contact 2b, and the automatic transfer switch electrical appliance enters a first power switch-on state; the direction D1 and the direction D2 are opposite directions.

Preferably, the second power contact 2c and the first power contact 2b are respectively located at the upper side and the lower side of the moving contact assembly 30a, the load end contact 2a is located at one side of the moving contact assembly 30a, and the load end contact 2a, the first power contact 2b and the second power contact 2c are located at three vertexes of an isosceles triangle; the arc extinguishing chamber 3b is arranged on one side of the movable contact assembly 30a, the first power contact 2b is arranged corresponding to the lower end of the arc extinguishing chamber 3b, the second power contact 2c is arranged corresponding to the upper end of the arc extinguishing chamber 3b, and the load end contact 2a is arranged corresponding to the middle part of the arc extinguishing chamber 3 b; the first grid set 31b0, the second grid set 31b1, the third grid set 31b2 and the fourth grid set 31b3 are distributed in a fan shape.

Preferably, each grid group comprises a plurality of arc-extinguishing grid plates 31b arranged at intervals side by side, the arc-extinguishing grid plates 31b are of a U-shaped structure, each arc-extinguishing grid plate comprises a grid plate beam 310b, a grid plate high foot 311b and a grid plate low foot 312b which are respectively arranged at two ends of the grid plate beam 310b, the length of the grid plate high foot 311b is greater than that of the grid plate low foot 312b, the grid plate high foot 311b, the grid plate beam 310b and the grid plate low foot 312b encircle to form a C-shaped arc-extinguishing groove 315b, arc-extinguishing slits 314b are arranged on the grid plate beam 310b, and one end of each arc-extinguishing slit 314b is communicated with each arc-extinguishing groove 315 b.

Preferably, the high leg 311b and the low leg 312b are respectively connected to two ends of the beam 310b at right angles, the high leg 311b and the low leg 312b are respectively provided with a grid protrusion 313b matched with the arc extinguishing wall 30b, the arc extinguishing slit 314b is arranged in the middle of the beam 310b, and the arc extinguishing slit 314b is a rectangular groove.

Preferably, in the same grid group, two adjacent arc extinguishing grids 31b, and a grid high leg 311b and a grid low leg 312b of one arc extinguishing grid 31b are respectively opposite to a grid low leg 312b and a grid high leg 311b of the other arc extinguishing grid 31 b.

Preferably, it further comprises a first power base 1a and a second power base 1b, the first power base 1a comprising at least one lower assembly cavity 13a arranged thereon, the second power base 1b comprising at least one upper assembly cavity 15b arranged thereon, the lower assembly cavity 13a and the upper assembly cavity 15b cooperating to form an assembly cavity 1ab for assembling the contact system 3020; the movable contact assembly 30a is rotatably arranged in the middle of the assembly cavity 1ab, the second power contact 2c is fixedly arranged on the second power base 1b and positioned at one end of the upper assembly cavity 15b, the first power contact 2b and the load end contact 2a are fixedly arranged on the first power base 1a and positioned at two ends of the lower assembly cavity 13a respectively, and the upper end and the lower end of the arc extinguishing chamber 3b are inserted into the upper assembly cavity 15b and the lower assembly cavity 13a and are in limit fit with the second power base 1b and the first power base 1a respectively.

Preferably, the arc extinguishing chamber 3b includes two arc extinguishing walls 30b disposed opposite to each other, each arc extinguishing wall 30b includes an arc extinguishing wall upper end 30b2 and an arc extinguishing wall lower end 30b1 disposed at upper and lower ends thereof, a first limiting groove 30b4 extending along a length direction of the arc extinguishing wall 30b is disposed on the arc extinguishing wall lower end 30b1, the first limiting groove 30b4 is disposed between the third grid plate group 31b2 and the fourth grid plate group 31b3, a second limiting groove 30b30 is disposed at one vertex angle of the arc extinguishing wall upper end 30b2, and the second limiting groove 30b is a right-angle groove disposed between the first grid plate group 31b0 and the second grid plate group 31b 1;

the lower assembly cavity 13a comprises a lower assembly cavity bottom wall 135a, and a first limit rib 130a is arranged on the lower assembly cavity bottom wall 135 a; the upper assembly cavity 15b comprises an upper assembly cavity top wall 150b and a left side wall, the upper assembly cavity top wall 150b is provided with a second limit rib 16b, the left side wall is of a step structure and comprises a first left side wall 10b, a second left side wall 1011b and a third left side wall 11b which are sequentially bent and connected, and one end of the first left side wall 10b is bent and connected with one end of the upper assembly cavity top wall 150 b; the first limit rib 130a is inserted into the first limit groove 30b4 to be in limit fit with the first limit groove, the upper end 30b2 of the arc extinguishing wall is limited between the first left side wall 10b and the second limit rib 16b, and the first left side wall 10b and the second left side wall 1011b are respectively in limit fit with two side edges of the second limit groove 30b 30.

Preferably, the first grid set 31b0 and the second grid set 31b1 are located in the upper assembling cavity 15b, and the third grid set 31b2 and the fourth grid set 31b3 are located in the lower assembling cavity 13 a; the bottom wall 135a of the lower assembly cavity is further provided with a third air outlet 132a correspondingly matched with the third grid plate group 31b2 and a fourth air outlet 131a correspondingly matched with the fourth grid plate group 31b3, and the third air outlet 132a and the fourth air outlet 131a are respectively positioned at two sides of the first limit rib 130 a; the first left sidewall 10b is provided with a first exhaust port 100b corresponding to the first grid set 31b0, and the third left sidewall 11b is provided with a second exhaust port 110b corresponding to the second grid set 31b 1.

Preferably, the bottom wall 135a of the lower assembly cavity is further provided with a third limiting rib 136a, the first limiting groove 30b4 divides the lower end 30b1 of the arc extinguishing wall into two parts, namely a lower left part 30b11 and a lower right part 30b10, and the lower right part 30b10 is limited between the first limiting rib 130a and the third limiting rib 136 a.

Preferably, at least one lower assembling cavity 13a is disposed on the first power base 1a, two ends of the lower assembling cavity 13a are respectively provided with a load end assembling platform 133a for assembling the load end contact 2a and a first power contact assembling platform 134a for assembling the first power contact 2b, the lower assembling cavity 13a includes a lower assembling cavity bottom wall 135a, the lower assembling cavity bottom wall 135a is provided with a third air outlet 132a correspondingly matched with the third grid plate group 31b2, a fourth air outlet 131a correspondingly matched with the fourth grid plate group 31b3, a first limit rib 130a and a third limit rib 136a, the first limit rib 130a is disposed between the third air outlet 132a and the fourth air outlet 131a, the third limit rib 136a is disposed between the fourth air outlet 131a and the first power contact assembling platform 134a, and the first limit rib 130a and the third limit rib 136a are disposed at parallel intervals and each extend upwards from the lower assembling cavity bottom wall 135 a.

Preferably, at least one upper assembling cavity 15b is disposed on the second power base 1b, one end of the upper assembling cavity 15b is provided with a second power assembling table 130b for assembling the second power contact 2c, the other end is provided with a left side wall, the left side wall is provided with a first air outlet 100b correspondingly matched with the first grid plate group 31b0 and a second air outlet 110b correspondingly matched with the second grid plate group 31b1, the upper assembling cavity 15b includes an upper assembling cavity top wall 150b and a left side wall, the left side wall is in a step structure, the left side wall includes a first left side wall 10b, a second left side wall 1011b and a third left side wall 11b which are sequentially connected, one end of the upper assembling cavity top wall 150b is bent and connected with one end of the first left side wall 10b, the first air outlet 100b and the second air outlet 110b are respectively disposed on the first left side wall 10b and the third left side wall 11b, and the inner side of the upper assembling cavity top wall 150b is provided with a second limiting rib 16b extending downwards.

Preferably, the moving contact assembly 30a includes a contact support 300a, contact pieces 301a, a spring piece 302a and a contact fixing shaft 303a, wherein a contact assembly groove 3000a is formed on one side of the contact support 300a, a contact partition 3002a is formed in the middle of the contact assembly groove 3000a, two contact pieces 301a are oppositely arranged in the contact assembly groove 3000a and are respectively located on two sides of the contact partition 3002a, two moving contacts with contact grooves are formed at two ends of the two contact pieces 301a oppositely, two spring pieces 302a are arranged in the contact assembly groove 3000a and are respectively located on two sides of the two contact pieces 301a, two ends of each spring piece 302a respectively press against two ends of one contact piece 301a, and the contact fixing shaft 303a passes through the contact pieces 301a, the spring pieces 302a and the contact support 300a to fix the contact pieces 301a, the spring pieces 302a and the contact support 300a together.

Preferably, the contact piece 301a has a U-shaped structure, and comprises an assembling portion 3010a, contact arms 3011a and movable contacts 3012a, wherein the two contact arms 3011a are respectively connected with two ends of the assembling portion 3010a in a bending way, an included angle between each contact arm 3011a and the assembling portion 3010a is alpha, 90 degrees < alpha < 180 degrees, one movable contact 3012a is arranged at one side of the free end of each contact arm 3011a, the contact arms 3011a and the assembling portion 3010a are positioned in the same plane, and the two movable contacts 3012a are positioned at the same side of the two contact arms 3011 a; at least one contact protrusion 3013a is arranged on the edge of the assembling part 3010a facing the bottom side of the contact assembling groove 3000 a; at least one contact limiting groove 3001a is arranged on the bottom side of the contact assembly groove 3000a, and the contact limiting groove 3001a is in limiting fit with the contact protrusion 3013 a.

The first grating sheet group is used for extinguishing the electric arcs generated when the moving contact is separated from the second power contact, the second grating sheet group and the third grating sheet group are used for extinguishing the electric arcs generated when the moving contact is separated from the load end contact from different directions, and the fourth grating sheet group is used for extinguishing the electric arcs generated when the moving contact is separated from the first power contact; the automatic transfer switch can flexibly set the position of the grid sheet group and the inclination angle of the arc extinguishing grid sheet of each grid sheet group according to the opening angle of the contact and the position of the exhaust port so as to realize the optimal arc extinguishing and exhaust effects. In addition, the arc extinguishing slit is beneficial to reducing the resistance of the arc entering the grid sheet group and improving the arc extinguishing efficiency; and arc extinguishing bars in each bar group are alternately arranged to form a bar high-foot and bar low-foot staggered structure at the inlet of the bar group, which is also beneficial to reducing the resistance of the electric arc entering the bar group and improving the arc extinguishing efficiency.

Drawings

FIG. 1 is a schematic diagram of the structure of the automatic transfer switching device of the present invention showing at least a first power base, a second power base and a cover of a switch housing;

fig. 2 is a schematic structural view of the automatic transfer switching device of the present invention, at least showing the assembly relationship of the energy storage operating mechanism, the contact system, the arc extinguishing chamber and the first power base;

FIG. 3 is a schematic structural view of the automatic transfer switching apparatus of the present invention, showing at least the positional relationship of the first power contact and the second power contact;

fig. 4 is a schematic structural view of the automatic transfer switching device of the present invention, at least showing the mating relationship of the contact system and the arc extinguishing chamber;

FIG. 5 is a schematic view of the contact system of the present invention, wherein the moving contact assembly does not conduct either the load side contact or the first power contact or the load side contact or the second power contact;

FIG. 6 is a schematic view of the contact system of the present invention, wherein the moving contact assembly is in conductive communication with the load side contact and the first power contact;

FIG. 7 is a schematic view of the contact system of the present invention, wherein the moving contact assembly is in conductive communication with the load side contact and the second power contact;

FIG. 8 is a schematic diagram of an exploded construction of the energy storage operating mechanism of the present invention;

FIG. 9 is a perspective view of the stored energy operating mechanism of the present invention showing at least the connection of the drive turntable, linkage, left spring damping mechanism, right spring damping mechanism;

FIG. 10 is a schematic perspective view of an operating mechanism of the present invention;

FIG. 11 is a schematic view of an exploded construction of the drive turntable of the present invention;

FIG. 12 is a schematic view of the structure of the driving disk of the present invention;

FIG. 13 is a projection view of the mechanism bracket of the present invention;

FIG. 14 is a schematic perspective view of the mechanism bracket of the present invention, showing at least the configuration of the front side wall;

FIG. 15 is a schematic perspective view of the mechanism bracket of the present invention, showing at least the configuration of the rear side wall;

fig. 16 is a schematic perspective view of a moving contact assembly according to the present invention;

FIG. 17 is a perspective view of the moving contact assembly of the present invention;

FIG. 18 is a schematic view of the sectional structure A1-A1 of FIG. 17 according to the present invention;

FIG. 19 is a schematic perspective view of the contact support of the present invention;

FIG. 20 is a perspective view of the contact support of the present invention;

FIG. 21 is a schematic view of the sectional structure A2-A2 of FIG. 20 according to the present invention;

fig. 22 is a schematic perspective view of a moving contact according to the present invention;

FIG. 23 is a schematic view of a moving contact of the present invention;

FIG. 24 is a schematic perspective view of a spring plate of the present invention;

FIG. 25 is a schematic view of a projection of a spring plate of the present invention;

fig. 26 is a schematic perspective view of an arc chute according to the present invention;

fig. 27 is a schematic perspective view of an arc chute of the present invention with one side of the arc chute removed, showing the distribution of four sets of grid plates;

fig. 28 is a schematic view of a projection of an arc chute of the present invention with one side arc chute removed;

fig. 29 is a schematic view of the structure of an arc chute of the present invention

Fig. 30 is a schematic view of a projection of an arc chute of the present invention;

FIG. 31 is a schematic view of the structure of the load side contact of the present invention;

FIG. 32 is another schematic view of the load side contact of the present invention;

FIG. 33 is a schematic view of the structure of a first power contact of the present invention;

fig. 34 is a schematic view of the structure of a second power contact of the present invention;

FIG. 35 is a schematic perspective view of a first power base of the present invention;

FIG. 36 is a schematic view of a first power base of the present invention;

FIG. 37 is a schematic view of the sectional structure A3-A3 of FIG. 36 according to the present invention;

FIG. 38 is a schematic view of the structure of the second power base of the present invention showing at least the first exhaust port and the second exhaust port;

FIG. 39 is a schematic view of the structure of the second power base of the present invention, showing at least the second power mounting station;

FIG. 40 is a schematic view of a second power base of the present invention;

FIG. 41 is a schematic view of the cross-sectional structure A4-A4 of FIG. 40 in accordance with the present invention;

fig. 42 is a schematic structural view of the energy storage operating mechanism of the present invention, showing the positional relationship of the driving disc with the first micro switch, the second micro switch, and the third micro switch.

Detailed Description

Specific embodiments of the automatic transfer switching device of the present invention are further described below with reference to the examples shown in fig. 1 to 41. The automatic transfer switching device of the present invention is not limited to the description of the following embodiments.

The automatic transfer switching device comprises a switch shell, an energy storage operating mechanism A, at least one group of contact systems 3020 and at least one arc extinguishing chamber 3b, wherein the energy storage operating mechanism A is arranged inside the switch shell; each set of said contact systems 3020 is associated with one arc chute 3b; each set of said contact systems 3020 comprises a moving contact assembly 30a, a load end contact 2a cooperating with the moving contact assembly 30a, a first power contact 2b and a second power contact 2c; the energy storage operating mechanism a is in driving connection with the moving contact assembly 30a, and drives the moving contact assembly 30a to rotate, so that the load end contact 2a and the first power contact 2b are conducted, or the load end contact 2a and the second power contact 2c are conducted.

Preferably, as shown in fig. 1 to 4, the switch housing includes a first power supply base 1a, a second power supply base 1b and a cover 1c, the second power supply base 1b and the cover 1c being disposed at both ends of the upper side of the first power supply base 1a, respectively. Further, as shown in fig. 1 to 4, the energy storage operating mechanism a is disposed between the housing 1c and the first power supply base 1a, and the contact system 3020 and the arc extinguishing chamber 3b are disposed between the second power supply base 1b and the first power supply base 1 a. Further, as shown in fig. 1, the right side of the housing 1c is connected to the left side of the second power supply base 1 b. According to the automatic transfer switching device, the energy storage operating mechanism A is arranged in one space, and the contact system and the arc extinguishing chamber are arranged in the other space, so that electric isolation is realized, the electricity utilization safety of a user is ensured, meanwhile, the mutual influence between the contact system and the arc extinguishing chamber is avoided, and the working stability and reliability of the automatic transfer switching device are ensured.

Preferably, the second power supply base 1b and the first power supply base 1a, and the housing 1c and the first power supply base 1a may be connected by a buckle, a screw, or both. Preferably, as shown in fig. 4-7, the contact system 3020 includes a movable contact assembly 30a and a load end contact 2a, a first power contact 2b, and a second power contact 2c mated with the movable contact assembly 30 a; the moving contact assembly 30a comprises two moving contacts, when the automatic transfer switch is in a double-opening state, one moving contact is positioned between the second power contact 2c and the load end contact 2a, and the other moving contact is positioned between the load end contact 2a and the first power contact 2 b; when the automatic transfer switching device is in a double-switching-off state, the moving contact assembly 30a rotates in the direction D1, so that the two moving contacts are respectively contacted and conducted with the load end contact 2a and the second power contact 2c, and the automatic transfer switching device enters a second power switching-on state; the movable contact assembly 30a rotates in the direction D2, so that the two movable contacts are respectively contacted and conducted with the load end contact 2a and the first power contact 2b, and the automatic transfer switch electrical appliance enters a first power switch-on state; the direction D1 and the direction D2 are opposite directions.

Preferably, as shown in fig. 8-15, the energy storage operating mechanism a includes a mechanism support 1, the mechanism support 1 includes a front side wall 10 and a rear side wall 11 which are oppositely disposed, the energy storage operating mechanism a further includes a driving turntable 3 disposed between the front side wall 10 and the rear side wall 11, a link mechanism, a left spring damping mechanism 61, a right spring damping mechanism 60, a left driving shaft 71 and a right driving shaft 70, the driving turntable 3 is pivotally disposed between the front side wall 10 and the rear side wall 11, the link mechanism is connected with the driving turntable 3, one end of the left spring damping mechanism 61 is connected with the mechanism support 1, the other end is connected with the link mechanism through the left driving shaft 71, one end of the right spring damping mechanism 60 is connected with the mechanism support 1, the other end is connected with the link mechanism, and the left driving shaft and the right driving shaft 70 are respectively in driving fit with a moving contact assembly 30a of the automatic transfer switch; the front side wall 10 and the rear side wall 11 are respectively provided with a left track hole 15 and a right track hole 14 which are oppositely arranged, the left track hole 15 and the right track hole 14 which are arranged on the front side wall 10 are respectively oppositely arranged with the left track hole 15 and the right track hole 14 which are arranged on the rear side wall 11, two ends of a left driving shaft 71 are respectively arranged in the two left track holes 15, the shape of the left track hole 15 is matched with the movement track of the left driving shaft 71, two ends of a right driving shaft 70 are respectively arranged in the two right track holes 14, and the shape of the right track hole 14 is matched with the movement track of the right driving shaft 70.

When the energy storage operating mechanism A is in a double-opening state, an external force enables the driving turntable 1 to rotate in a direction R1 in which the first power supply is conducted, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the connecting rod mechanism, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings through a first critical point, the right spring damping mechanism 60 releases energy, the right driving shaft 70 is driven to accelerate to move by the right spring damping mechanism 60, the moving contact assembly 30a is driven by the right driving shaft 70 to rapidly conduct the first power supply and the load, and the energy storage operating mechanism A enters a first power supply closing state; after the energy storage operating mechanism A enters a first power supply switching-on state from a double-switching-off state, external force enables the driving turntable 3 to rotate towards a second power supply switching-on direction R2, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the connecting rod mechanism, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings through a first critical point, the right spring damping mechanism 60 releases energy, the right driving shaft 70 is driven by the right spring damping mechanism 60 to accelerate movement, the moving contact mechanism 3a is driven by the right driving shaft 70 to rapidly break the first power supply and the load, and the energy storage operating mechanism A enters the double-switching-off state.

When the energy storage operating mechanism A is in a double-opening state, an external force enables the driving turntable 1 to rotate in a direction R2 in which the second power supply is conducted, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the connecting rod mechanism, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven to accelerate to move by the left spring damping mechanism 61, the moving contact assembly 30a is driven by the left driving shaft 70 to rapidly conduct the second power supply and the load, and the energy storage operating mechanism A enters a second power supply closing state; after the energy storage operating mechanism enters a second power switch-on state from a double-switch-off state, external force enables the driving turntable 3 to rotate towards a first power conduction direction R1, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the connecting rod mechanism, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven to accelerate to move by the left spring damping mechanism 61, the moving contact mechanism 3a is driven by the left driving shaft 71 to rapidly break the second power supply and the load, and the energy storage operating mechanism A enters the double-switch-off state.

According to the automatic transfer switching device, when the energy storage operating mechanism A enters a first power supply switching-on state from a double-switching-on state, the right driving shaft 70 is accelerated to move through energy storage and energy release of the right spring damping mechanism 60, the right driving shaft 70 drives the movable contact assembly 30a to rapidly conduct the first power supply and the load, and when the energy storage operating mechanism A enters a second power supply switching-on state from the double-switching-on state, the left driving shaft 71 is accelerated to move through energy storage and energy release of the right spring damping mechanism 61, and the left driving shaft 71 drives the movable contact assembly 30a to rapidly conduct the second power supply and the load, so that the switching-on speed of the automatic transfer switching device is obviously improved, the influence of the speed of a motor or manual operation is avoided, and the action performance of the automatic transfer switching device is improved; the automatic transfer switching device can be respectively kept in a double-opening state, a first power supply closing state and a second power supply closing state, so that three-section operation of the automatic transfer switching device is realized; the mechanism support 1 ensures reliable installation of all parts of the energy storage operating mechanism A and ensures reliable and stable work of the energy storage operating mechanism A.

It should be noted that the first critical point is a demarcation point at which the right spring damper mechanism 60 changes from the stored energy state to the released energy state; the second critical point is a demarcation point at which the left spring damping mechanism 61 changes from the energy storage state to the energy release state; the directions R1 and R2 refer to two different rotation directions of the driving turntable 3, specifically, as shown in fig. 9, the direction R1 is a counterclockwise direction, and the direction R2 is a clockwise direction.

Preferably, a plurality of grid sets are arranged in the arc extinguishing chamber 3 b. As shown in fig. 4 to 7, the arc extinguishing chamber 3b includes arc extinguishing walls 30b and arc extinguishing gate plates 31b, four gate plate groups are disposed between two arc extinguishing walls 30b disposed oppositely, and a first gate plate group 31b0, a second gate plate group 31b1, a third gate plate group 31b2 and a fourth gate plate group 31b3 disposed at intervals in sequence, each gate plate group includes a plurality of arc extinguishing gate plates 31b disposed at intervals side by side, and a distance between two adjacent gate plate groups is greater than a distance between two adjacent arc extinguishing gate plates 31b in the same gate plate group. The contact system 3020 includes a moving contact assembly 30a, a load end contact 2a, a first power contact 2b, and a second power contact 2c that are used in cooperation with the moving contact assembly 30a, the load end contact 2a is located between the first power contact 2b and the second power contact 2c, the first grid set 31b0 is disposed on one side of the second power contact 2c, the second grid set 31b1 and the third grid set 31b2 are disposed on two sides of the load end contact 2a, the fourth grid set 31b3 is disposed on one side of the first power contact 2b, the first grid set 31b0 and the second grid set 31b1 are located between the second power contact 2c and the load end contact 2a, and the third grid set 31b2 and the fourth grid set 31b3 are located between the first power contact 2b and the load end contact 2 a. Preferably, when the automatic transfer switch is in the double-break state, one moving contact is located between the second power contact 2c and the load end contact 2a and between the first grid set 31b0 and the second grid set 31b1, and the other moving contact is located between the load end contact 2a and the first power contact 2b and between the third grid set 31b2 and the fourth grid set 31b 3. The first grid set 31b0 is used for extinguishing an arc generated when the moving contact is separated from the second power contact 2c, the second grid set 31b1 and the third grid set 31b2 are used for extinguishing an arc generated when the moving contact is separated from the load end contact 2a from different directions, the fourth grid set 31b3 is used for extinguishing an arc generated when the moving contact is separated from the first power contact 2b, and the arc extinguishing chamber 3b can extinguish an arc generated everywhere of the contact system 3020, and meanwhile compared with the arc extinguishing chambers continuously arranged with the existing arc extinguishing grid, the number of the arc extinguishing grid can be effectively reduced, the manufacturing cost is reduced, the dead weight of an automatic transfer switch electrical appliance is reduced, and the installation and the use are convenient; the automatic transfer switch can flexibly set the position of the grid sheet group and the inclination angle of the arc extinguishing grid sheet of each grid sheet group according to the opening angle of the contact and the position of the exhaust port so as to realize the optimal arc extinguishing and exhaust effects.

Preferably, as shown in fig. 28, the first grid set 31b0 and the fourth grid set 31b3 are symmetrical to each other, the second grid set 31b1 and the third grid set 31b2 are symmetrical to each other, and the first grid set is formed. Further, the arc extinguishing gate sheets 31b in each gate sheet group are arranged in parallel at intervals, so that the air outlet end of each gate sheet group is opposite to one air outlet.

Preferably, as shown in fig. 29 and 30, the arc extinguishing gate 31b has a U-shaped structure, which includes a gate beam 310b, and a gate high leg 311b and a gate low leg 312b respectively disposed at two ends of the gate beam 310b, where the length of the gate high leg 311b is greater than that of the gate low leg 312b, the gate beam 310b, the gate high leg 311b, and the gate low leg 312b enclose a C-shaped arc extinguishing slot 315b, an arc extinguishing slit 314b is disposed on the gate beam 310b, and one end of the arc extinguishing slit 314b is identical to the arc extinguishing slot 315 b. Further, as shown in fig. 27, in the same gate group, two adjacent arc extinguishing gate sheets 31b, the gate high leg 311b and the gate low leg 312b of one arc extinguishing gate sheet 31b are respectively arranged opposite to the gate low leg 312b and the gate high leg 311b of the other arc extinguishing gate sheet 31 b. The arc extinguishing slit 314b is beneficial to reducing the resistance of the arc entering the grid sheet group and improving the arc extinguishing efficiency; and arc extinguishing bars in each bar group are alternately arranged to form a bar high-foot and bar low-foot staggered structure at the inlet of the bar group, which is also beneficial to reducing the resistance of the electric arc entering the bar group and improving the arc extinguishing efficiency.

Preferably, as shown in fig. 16-25, the moving contact assembly 30a includes a contact support 300a, contact pieces 301a, spring pieces 302a and a contact fixing shaft 303a, a contact assembly groove 3000a is formed on one side of the contact support 300a, a contact partition 3002a is formed in the middle of the contact assembly groove 3000a, two contact pieces 301a are oppositely arranged in the contact assembly groove 3000a and are respectively located at two sides of the contact partition 3002a, two moving contacts with contact grooves are oppositely arranged at two ends of the two contact pieces 301a, two ends of each spring piece 302a are pressed against two ends of one contact piece 301a, and the contact fixing shaft 303a passes through the contact pieces 301a, the spring pieces 302a, the contact partition 3002a and the contact support 300a to fix the contact pieces 301a, the spring pieces 302a and the contact support 300a together. The moving contact assembly 30a has a simple structure, is convenient to assemble, enables the contact baffle 3002a to form a certain distance gap between two oppositely arranged contact pieces 301a, is beneficial to simplifying the structure of the contact pieces 301a, and is more convenient for the plug-in matching of the moving contact with a load end contact and a power contact. Further, as shown in fig. 22 and 23, the contact piece 301a has a "U" shape, and includes a mounting portion 3010a, contact arms 3011a and moving contacts 3012a, where two contact arms 3011a are respectively bent and connected to two ends of the mounting portion 3011a, an included angle between each contact arm 3011a and the mounting portion 3010a is α,90 ° < α < 180 °, one moving contact 3012a is disposed at a free end side of each contact arm 3011a, the contact arms 3011a and the mounting portion 3010a are located in the same plane, and two moving contacts are located at the same side of the two contact arms 3011 a. Further, as shown in fig. 18, 22 and 23, at least one contact protrusion 3013a is disposed on the edge of the fitting portion 3010a facing the bottom side of the contact fitting slot 3000a, and the contact limiting slot 3001a is in limiting fit with the contact protrusion 3013 a. The contact protrusion 3013a and the contact limit groove 3001a are in limit fit, so as to effectively limit the relative movement between the contact piece 301a and the contact support 300 a.

As shown in fig. 1 to 41, an embodiment of the automatic transfer switching device of the present invention is shown.

As shown in fig. 1 to 4, the automatic transfer switching device of the present invention comprises a switch housing, an energy storage operating mechanism a disposed inside the switch housing, at least one group of contact systems 3020, and at least one arc extinguishing chamber 3b; each set of said contact systems 3020 is associated with one arc chute 3b; each set of contact systems 3020 includes a movable contact assembly 30a, a load end contact 2a mated with the movable contact assembly 30a, a first power contact 2b, and a second power contact 2c; the energy storage operating mechanism a is in driving connection with the moving contact assembly 30a, and drives the moving contact assembly 30a to rotate, so that the load end contact 2a and the first power contact 2b are conducted, or the load end contact 2a and the second power contact 2c are conducted.

In actual use, the load end contact 2a is connected with a load, the first power contact 2b is connected with a first power supply, and the second power contact 2c is connected with a second power supply; the first power supply is a common power supply, the second power supply is a standby power supply, and the first power supply is a standby power supply, and the second power supply is a common power supply.

Specifically, as shown in fig. 1-4, the automatic transfer switch electrical apparatus of the present invention includes four sets of contact systems 3020 and four arc-extinguishing chambers 3b arranged side by side, each contact system 3020 is correspondingly matched with one arc-extinguishing chamber 3b, moving contact assemblies 30a of the four contact systems 3020 are coaxially linked to form a moving contact mechanism 3a, and an energy storage operating mechanism a is arranged outside one end of the moving contact mechanism 3a and is in driving connection therewith to drive the moving contact mechanism 3a to rotate.

Preferably, as shown in fig. 1 to 4, the switch housing includes a first power supply base 1a, a second power supply base 1b, and a cover 1c, the second power supply base 1b and the cover 1c are respectively disposed at both ends of the upper side of the first power supply base 1a, an energy storage operating mechanism a is disposed between the cover 1c and the first power supply base 1a, and a contact system 3020 and an arc extinguishing chamber 3b are disposed between the second power supply base 1b and the first power supply base 1 a.

Preferably, as shown in fig. 4-7, in the contact system 3020, the first power contact 2b and the second power contact 2c are disposed on the lower side and the upper side of the moving contact assembly 30a, respectively, the load end contact 2a is located on one side of the moving contact assembly 30a, and the load end contact 2a, the first power contact 2b, and the second power contact 2c are located at three apexes of an isosceles triangle, respectively. Specifically, in the contact system 3020, as shown in fig. 4-7, the load side contact 2a, the first power contact 2b, and the second power contact 2c are disposed on the outer side of the moving contact assembly 30a, the second power contact 2c is disposed on the upper side of the moving contact assembly 30a, the first power contact 2b is disposed on the lower side of the moving contact assembly 30a, and the load side contact 2a is disposed on the left side of the moving contact assembly 30a and between the first power contact 2b and the second power contact 2 c.

As shown in fig. 4 to 7, the energy storage operating mechanism a of the automatic transfer switching device of the present invention has three operating states, respectively: 1. in the double-break state, as shown in fig. 4 and 5, the moving contact assembly 30a does not conduct the load end contact 2a and the first power contact 2b nor the load end contact 2a and the second power contact 2c; 2. in the first power on state, as shown in fig. 6, the moving contact assembly 30a turns on the load end contact 2a and the first power contact 2b; 3. in the second power on state, as shown in fig. 7, the moving contact assembly 30a turns on the load end contact 2a and the second power contact 2c. Further, as shown in fig. 5, when the moving contact assembly 30a rotates in the direction D2 (counterclockwise), the state shown in fig. 6 is entered, and the moving contact assembly 30a conducts the load end contact 2a and the first power contact 2b; when the movable contact assembly 30a rotates in the direction D1 (clockwise direction), the state of fig. 7 is entered, and the movable contact assembly 30a conducts the load end contact 2a and the second power contact 2c.

Fig. 8-15 show an embodiment of the energy storage operating mechanism a of the automatic transfer switching device according to the present invention.

The energy storage operating mechanism A comprises a mechanism bracket 1, wherein the mechanism bracket 1 comprises a front side wall 10 and a rear side wall 11 which are oppositely arranged, the energy storage operating mechanism A also comprises a driving turntable 3, a connecting rod mechanism, a left spring damping mechanism 61, a right spring damping mechanism 60, a left driving shaft 71 and a right driving shaft 70 which are pivoted between the front side wall 10 and the rear side wall 11, the connecting rod mechanism is connected with the driving turntable 3, one end of the left spring damping mechanism 61 is connected with the mechanism bracket 1, the other end of the left spring damping mechanism is connected with the connecting rod mechanism through the left driving shaft 71, one end of the right spring damping mechanism 60 is connected with the mechanism bracket 1, the other end of the right spring damping mechanism is connected with the connecting rod mechanism through the right driving shaft 70, and the left driving shaft 71 and the right driving shaft 70 are respectively in driving fit with a moving contact assembly 30a of the automatic change-over switch electric appliance; the left track hole 15 and the right track hole 14 are arranged on the front side wall 10 and the rear side wall 11, the left track hole 15 and the right track hole 14 on the front side wall 10 are respectively arranged opposite to the left track hole 15 and the right track hole 14 on the rear side wall 11, two ends of the left driving shaft 71 are respectively arranged in the two left track holes 15, the shape of the left track hole 15 is matched with the movement track of the left driving shaft 71, two ends of the right driving shaft 70 are respectively arranged in the two right track holes 14, and the shape of the right track hole 14 is matched with the movement track of the right driving shaft 70.

When the energy storage operating mechanism A is in a double-opening state, an external force enables the driving turntable 3 to rotate in a direction R1 in which the first power supply is conducted, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the connecting rod mechanism, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings through a first critical point, the right spring damping mechanism 60 releases energy, the right driving shaft 70 is driven to accelerate to move by the right spring damping mechanism 60, the moving contact assembly 30a is driven by the right driving shaft 70 to rapidly conduct the first power supply and the load, and the energy storage operating mechanism A enters a first power supply closing state; after the energy storage operating mechanism A enters a first power supply switching-on state from a double-switching-off state, external force enables the driving turntable 3 to rotate towards a second power supply switching-on direction R2, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the connecting rod mechanism, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings through a first critical point, the right spring damping mechanism 60 releases energy, the right driving shaft 70 is driven to accelerate to move by the right spring damping mechanism 60, the moving contact assembly 30a is driven by the right driving shaft 70 to rapidly break the first power supply and the load, and the energy storage operating mechanism A enters the double-switching-off state.

When the energy storage operating mechanism A is in a double-opening state, an external force enables the driving turntable 3 to rotate in a direction R2 in which the second power supply is conducted, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the connecting rod mechanism, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven to accelerate to move by the left spring damping mechanism 61, the moving contact assembly 30a is driven by the left driving shaft 70 to rapidly conduct the second power supply and the load, and the energy storage operating mechanism A enters a second power supply closing state; after the energy storage operating mechanism A enters a second power switch-on state from a double-switch-off state, external force enables the driving turntable 3 to rotate towards a first power switch-on direction R1, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the connecting rod mechanism, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven to accelerate to move by the left spring damping mechanism 61, and the moving contact assembly 30a is driven by the left driving shaft 71 to rapidly break the second power supply and the load, so that the energy storage operating mechanism A enters the double-switch-off state.

Specifically, as shown in fig. 9, the direction R1 in which the first power is turned on is counterclockwise, and the direction R2 in which the second power is turned on is clockwise. As shown in fig. 9, the energy storage operating mechanism a is in a dual-opening state, the external force makes the driving turntable 3 swing from bottom to top in a direction R1 (counterclockwise) in which the first power is turned on, when the right spring damping mechanism 60 becomes in a flat state, the energy storage of the right spring damping mechanism 60 reaches the maximum (i.e., the first critical point), the left end of the right spring damping mechanism 60 continues to swing upwards, and then swings past the first critical point, the right spring damping mechanism 60 releases energy to drive the right driving shaft 70 to accelerate, the right driving shaft 70 drives the moving contact assembly 30 to rotate in the direction R1 (counterclockwise), the load end contact 2a and the first power contact 2b are quickly turned on, and the energy storage operating mechanism a enters a first power switch-on state; after the energy storage operating mechanism a enters the first power switch-on state from the double-switch-off state shown in fig. 9, the external force makes the driving turntable 3 rotate in the direction R2 (clockwise) of the second power conduction, the left end of the right spring damping mechanism 60 swings from top to bottom, when the right spring damping mechanism 60 changes into a flat state, the energy storage of the right spring damping mechanism 60 reaches the maximum (i.e. the first critical point), the left end of the right spring damping mechanism 60 continues to swing downwards, then swings through the first critical point, the right spring damping mechanism 60 releases energy to drive the right driving shaft 70 to accelerate movement, the right driving shaft 70 drives the moving contact assembly 30a to rotate in the direction R2 (clockwise), the load end contact 2a and the first power contact 2b are rapidly disconnected, and the energy storage operating mechanism a enters the double-switch-off state. As shown in fig. 9, the energy storage operating mechanism a is in a dual-opening state, the external force makes the driving turntable 3 rotate (clockwise) in the direction R2 in which the second power is turned on, the right end of the left spring damping mechanism 61 swings from bottom to top, when the left spring damping mechanism 61 becomes in a flat state, the energy storage of the left spring damping mechanism 61 reaches the maximum (i.e., the second critical point), the right end of the left spring damping mechanism 61 continues to swing upwards, and then swings past the second critical point, the left spring damping mechanism 61 releases energy to drive the left driving shaft 71 to accelerate, the left driving shaft 71 drives the moving contact assembly 30a to rotate (clockwise) in the direction R2, the load end contact 2a and the second power contact 2c are quickly turned on, and the energy storage operating mechanism a enters a second power switch-on state; after the energy storage operating mechanism a enters the second power switch-on state from the double switch-off state shown in fig. 9, the external force makes the driving turntable 3 rotate in the direction R1 (counterclockwise direction) in which the first power is turned on, the right end of the left spring damping mechanism 61 swings from top to bottom, when the left spring damping mechanism 61 changes to a flat state, the energy storage of the left spring damping mechanism 61 reaches the maximum (i.e. the second critical point), the right end of the left spring damping mechanism 61 continues to swing downwards, then swings past the second critical point, the left spring damping mechanism 61 releases energy to drive the left driving shaft 71 to accelerate movement, the left driving shaft 71 drives the moving contact assembly 30a to rotate in the direction R1 (counterclockwise direction), the load end contact 2a and the second power contact 2c are rapidly disconnected, and the energy storage operating mechanism a enters the double switch-off state.

Preferably, as shown in fig. 10, the link mechanism includes a left driving lever 41, a right driving lever 40, a left link 51, and a right link 50; one end of the right driving rod 40 is connected with the driving turntable 3, the other end is hinged with one end of the right connecting rod 50 and one end of the right spring damping mechanism 60 through the right driving shaft 70, the other end of the right spring damping mechanism 60 is connected with the mechanism bracket 1, one end of the left driving rod 41 is connected with the driving turntable 3, the other end is hinged with one end of the left connecting rod 51 and one end of the left spring damping mechanism 61 through the left driving shaft 71, the other end of the left spring damping mechanism 61 is connected with the mechanism bracket 1, the other end of the right connecting rod 50 is hinged with the other end of the left connecting rod 51 through the hinge shaft 52, and two ends of the hinge shaft 52 are respectively fixed on the front side wall 10 and the rear side wall 11.

Preferably, the hinge shaft 52 is movable in a small range to facilitate assembly of the stored energy operating mechanism a.

Specifically, as shown in fig. 9 and 10, the driving turntable 3 is disposed above the left spring damper mechanism 61 and the right spring damper mechanism 61, and the left spring damper mechanism 61 and the right spring damper mechanism 60 are respectively disposed at the left side and the right side of the driving turntable 3, the link mechanism is disposed at the lower side of the driving turntable 3 and above the left spring damper mechanism 61 and the right spring damper mechanism 60, both ends of the lower portion of the driving turntable 3 are respectively connected to the upper end of the left driving rod 41 and the upper end of the right driving rod 40, the lower end of the left driving rod 41 is hinged to the left end of the left link rod 51 and the right end of the left spring damper mechanism 61 through the left driving shaft 71, the left end of the left spring damper mechanism 61 is connected to the mechanism bracket 1, the lower end of the right driving rod 40 is hinged to the right end of the right link rod 50 and the left end of the right spring damper mechanism 60 through the right driving shaft 70, the right end of the left link rod 51 is hinged to the left end of the right link rod 50 through the hinge shaft 52, the hinge shaft 52 is disposed between the left driving rod 41 and the right driving rod 40, and both ends are respectively connected to the front side wall 11 and the rear side wall 11 of the mechanism bracket 1.

As shown in fig. 9, when the energy storage operating mechanism a is in the dual-opening state, an external force causes the driving turntable 3 to rotate in the first power supply conducting direction R1, the driving turntable 3 swings the right spring damping mechanism 60 through the right driving rod 40, so that the right spring damping mechanism 60 releases energy, the right spring damping mechanism 60 drives the right driving shaft 70 to accelerate movement, and the right driving shaft 70 drives the moving contact assembly 30a to rapidly conduct the first power supply and the load, so that the energy storage operating mechanism a enters the first power supply closing state; after the energy storage operating mechanism A enters a first power switch-on state from a double-switch-off state, external force causes the driving turntable 3 to rotate towards a second power switch-on direction R2, the driving turntable 3 swings the right spring damping mechanism 60 through the right driving rod 40, the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings past a first critical point, the right spring damping mechanism 60 drives the right driving shaft 70 to accelerate, and the right driving shaft 70 drives the movable contact assembly 30a to rapidly break the first power supply and the load, so that the energy storage operating mechanism A enters the double-switch-off state.

As shown in fig. 9, the energy storage operating mechanism a is in a dual-opening state, an external force makes the driving turntable 3 rotate in a second power supply conducting direction R2, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the left driving rod 41, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings past a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven by the left spring damping mechanism 61 to rapidly move, and the moving contact assembly 30a is driven by the left driving shaft 71 to rapidly conduct a second power supply and a load, so that the energy storage operating mechanism a enters a second power supply closing state; after the energy storage operating mechanism A enters a second power switch-on state from a double-switch-off state, external force enables the driving turntable 3 to rotate towards a first power switch-on direction R1, the driving turntable 3 enables the left spring damping mechanism 61 to swing through the left driving rod 41, the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings to pass through a second critical point, the left spring damping mechanism 61 releases energy, the left driving shaft 71 is driven by the left spring damping mechanism 61 to rapidly move, the moving contact assembly 30a is driven by the left driving shaft 71 to rapidly break the second power supply and the load, and the energy storage operating mechanism A enters the double-switch-off state.

Preferably, as shown in fig. 9, the right driving rod 40 includes a right driving rod front end and a right driving rod rear end respectively disposed at two ends thereof, the right driving rod front end is provided with a right kidney-shaped hole 400 extending along the axial direction of the right driving rod 40, and the right driving rod rear end is hinged with one end of the right spring damping mechanism 60 through the right driving shaft 70; the left driving rod 41 comprises a left driving rod front end and a left driving rod rear end which are respectively arranged at two ends of the left driving rod, the left driving rod front end is provided with a left waist-shaped hole 410 extending along the axial direction of the left driving rod 41, and the left driving rod rear end is hinged with the left spring damping mechanism 61 through a left driving shaft 71; as shown in fig. 9 and 10, the driving turntable 3 includes a right crank 30 and a left crank 31 provided thereon, the right crank 30 being inserted into the right kidney-shaped hole 400 and the right crank 30 being capable of reciprocating in the right kidney-shaped hole 400, the left crank 31 being inserted into the left kidney-shaped hole 410 and the left crank 31 being capable of reciprocating in the left kidney-shaped hole 410. Further, as shown in fig. 9, the distance from the left crank 31 to the rotation center of the driving turntable 3 is the same as the distance from the right crank 30 to the rotation center of the driving turntable 3; the included angle beta between the connecting line of the left crank 31 and the rotation center of the driving turntable 3 and the connecting line of the right crank 30 and the rotation center of the driving turntable 3 is smaller than 180 degrees and larger than or equal to 90 degrees. Further, as shown in fig. 9, the left crankshaft 31 and the right crankshaft 30 are both located below the rotation center of the drive turntable 3.

It should be noted that the driving turntable 3, the right crank 30, the left crank 31, the right driving rod 40 and the left driving rod 41 may be engaged by not providing the right driving rod 40 with the right kidney-shaped hole 400, providing the left driving rod 41 with the left kidney-shaped hole 410, and providing the driving turntable 3 with the corresponding two kidney-shaped holes, wherein the right crank 30 is provided in one kidney-shaped hole and hinged with the upper end of the right driving rod 40, and the left crank 31 is provided in the other kidney-shaped hole and hinged with the upper end of the left driving rod 41.

Preferably, as shown in fig. 9, the right spring damper mechanism 60, the right driving lever 40, the right connecting rod 50, and the right driving shaft 70 are all located at one side of the line connecting the rotation centers of the hinge shaft 52 and the driving turntable 3, and the left spring damper mechanism 60, the left driving lever 41, the left connecting rod 51, and the left driving shaft 71 are all located at the other side of the line connecting the rotation centers of the hinge shaft 52 and the driving turntable 3. Further, as shown in fig. 9, the connection line L-L between the hinge shaft 52 and the rotation center of the driving turntable 3, the right spring damper mechanism 60 and the left spring damper mechanism 61, the right driving lever 40 and the left driving lever 41, the right connecting rod 50 and the left connecting rod 51, and the right driving shaft 70 and the left driving shaft 71 are all symmetrical with each other by using the connection line L-L as a symmetry axis.

Preferably, as shown in fig. 9, the right spring damper mechanism 60 includes a right spring 602, a right spring support 601 and a right pivot 604, the right spring support 601 includes a right support kidney-shaped hole 603 disposed at one end thereof and extending along the axial direction of the right spring support 601, the right pivot 604 is inserted into the right support kidney-shaped hole 603 and both ends thereof are respectively connected with the front side wall 10 and the rear side wall 11, the right spring 602 is sleeved on the right spring support 601, one end thereof is connected with the right pivot 604, and the other end thereof is connected with one end of the right spring support 601 hinged with the right driving rod 40; the left spring damping mechanism 61 comprises a left spring 612, a left spring support 611 and a left pivot 614, wherein the left spring support 611 comprises a left support waist-shaped hole 613 which is arranged at one end of the left spring support 611 and extends along the axial direction of the left spring support 611, the left pivot 614 is inserted into the left support waist-shaped hole 613, the two ends of the left pivot 614 are respectively connected with the front side wall 10 and the rear side wall 11, the left spring 612 is sleeved on the left spring support 611, one end of the left spring 612 is connected with the left pivot 614, and the other end of the left spring support 611 is connected with one end hinged with the left driving rod 41.

It should be noted that, the right spring damping mechanism 60 and the left spring damping mechanism 61 may be implemented in other ways, taking the right spring damping mechanism 60 as an example, the right spring bracket 601 is replaced by a telescopic rod, and the energy storage and release process of the right spring 602 may be completed, but compared with the right spring bracket 601 of the present invention, the friction force of the telescopic rod during the telescopic process may affect the energy release speed of the right spring 602, so that the action performance of the energy storage operating mechanism a of the present invention is affected by the movement degree.

The energy storage and release process of the right spring damper mechanism 60 and the left spring damper mechanism 61 will be described below by taking the right spring damper mechanism 60 as an example: as shown in fig. 9, in the initial state of the right spring damper mechanism 60, when the left end of the right spring damper mechanism 60 swings upward, since one end of the right link 50 is fixed, the right spring bracket 601 moves leftward while swinging, so that the distance between the right pivot 603 and the right driving shaft 70 is gradually shortened, the right spring 602 is gradually compressed and stored energy, when the right spring damper mechanism 60 swings to a horizontal state, the right spring 602 stores energy to the maximum, the left end of the right spring damper mechanism 60 continues to swing upward, the right spring 602 starts to release energy, and the right spring bracket 601 moves leftward at the same time, driving the right driving shaft 70 to accelerate movement.

Preferably, as shown in fig. 8, the energy storage operating mechanism a further includes a driving disc 2 pivotally disposed on one side of the mechanism support 12, the driving disc 2 is coaxially linked with the moving contact assembly 30a, the driving disc 2 includes a right circular arc groove 20 and a left circular arc groove 21 symmetrically disposed on two sides of the driving disc 2, the centers of circles of the right circular arc groove 20 and the left circular arc groove 21 coincide with the rotation center of the driving disc 2, the right circular arc groove 20 includes a right circular arc groove upper end 200 and a right circular arc groove lower end 201 disposed on two ends of the driving disc, the left circular arc groove 21 includes a left circular arc groove upper end 210 and a left circular arc groove lower end 211 disposed on two ends of the driving disc 21, one end of the right driving shaft 70 is disposed in the right circular arc groove 20, and one end of the left driving shaft 71 is disposed in the left circular arc groove 21.

When the energy storage operating mechanism a is in a double-opening state, an external force causes the driving disc 3 to rotate towards a first power supply conducting direction R1, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the right driving rod 40, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings past a first critical point, the right spring damping mechanism 60 releases energy, the right spring damping mechanism 60 pushes the upper end 200 of the right circular arc groove through the right driving shaft 70, so that the driving disc 2 accelerates and rotates, the driving disc 2 drives the moving contact assembly 30a to rotate, the moving contact assembly 30a rapidly conducts a first power supply and a load, and the energy storage operating mechanism a enters a first power supply closing state; after the energy storage operating mechanism A enters a first power switch-on state from a double-switch-off state, external force causes the driving turntable 3 to rotate towards a first power switch-on direction R2, the driving turntable 3 drives the right spring damping mechanism 60 to swing through the right driving rod 40, so that the right spring damping mechanism 60 stores energy, after the right spring damping mechanism 60 swings to pass through a first critical point, the right spring damping mechanism 60 releases energy, the right spring damping mechanism 60 pushes the lower end 201 of the right circular arc groove through the right driving shaft 70, so that the driving disc 2 rotates in an accelerating way, the driving disc 2 drives the moving contact assembly 30a to rotate and causes the moving contact assembly 30a to rapidly conduct a first power supply and a load, and the energy storage operating mechanism A enters the double-switch-off state.

When the energy storage operating mechanism a is in a double-opening state, an external force causes the driving turntable 3 to rotate towards a second power supply conducting direction R2, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the left driving rod 41, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left spring damping mechanism 61 pushes the upper end 210 of the left arc groove through the left driving shaft 71, so that the driving disc 2 accelerates and rotates, and the driving disc 2 drives the moving contact assembly 30a to rapidly conduct a second power supply and a load, so that the energy storage operating mechanism a enters a second power supply closing state; after the energy storage operating mechanism A enters a second power switch-on state from a double-switch-off state, external force causes the driving turntable 3 to rotate towards a first power switch-on direction R1, the driving turntable 3 drives the left spring damping mechanism 61 to swing through the left driving rod 41, so that the left spring damping mechanism 61 stores energy, after the left spring damping mechanism 61 swings through a second critical point, the left spring damping mechanism 61 releases energy, the left spring damping mechanism 61 pushes the lower end 211 of the left arc groove through the left driving shaft 71, so that the driving disc 2 rotates in an accelerating way, the driving disc 2 drives the moving contact assembly 30a to rotate and causes the moving contact assembly 30a to rapidly conduct a second power supply and a load, and the energy storage operating mechanism A enters the double-switch-off state.

It should be noted that, when the driving turntable 3 drives the right spring damping mechanism 60 to store energy through the right driving rod 40 and the right spring damping mechanism 60 releases energy, the left crankshaft 31 of the driving turntable 3 moves in the left kidney-shaped hole 410 of the left driving rod 41, so that the left driving rod 41 is not actuated, and the position of the left driving shaft 71 is unchanged; when the left driving rod 41 drives the left spring damping mechanism 61 to store energy and the left spring damping mechanism 61 to release energy, the right crankshaft 30 of the driving turntable 3 moves in the right kidney-shaped hole 400 of the right driving rod 40, so that the right driving rod 40 does not act, and the position of the right driving rod 70 is unchanged.

It should be noted that, instead of the driving disc 2, the energy storage operating mechanism a may be provided with a structure similar to the left circular arc groove 21 and the right circular arc groove 20 on the side surface of the contact support 300a of the moving contact assembly 30a, so as to drive the moving head assembly 30a to rotate through the left driving shaft 71 and the right driving shaft 70.

Preferably, as shown in fig. 42, the driving disc 2 further includes a trigger protrusion 22 provided at one end thereof and a trigger groove 23 provided at the other end of the driving disc 2; the energy storage operating mechanism A further comprises a first micro switch 2w0, a second micro switch 2w1 and a third micro switch 2w2 which are arranged on one side of the front side wall 10, the first micro switch 2w0 is connected with a double-opening indicating lamp, the second micro switch 2w1 is connected with a first power supply conduction indicating lamp, and the third micro switch 2w2 is connected with a second power supply conduction indicating lamp; the trigger groove 23 is matched with the first micro switch 2w0, and the trigger protrusion 22 is respectively matched with the second micro switch 2w1 and the third micro switch 2w 2; when the energy storage operating mechanism A is in a double-opening state, the first micro switch 2w0 is turned on, the double-opening indicating lamp is turned on, when the energy storage operating mechanism A is in a first power supply closing state, the first micro switch 2w0 is turned off, the double-opening indicating lamp is turned off, the second micro switch 2w1 is turned on, when the first power supply conduction indicating lamp is turned on, the energy storage operating mechanism A is in a second power supply closing state, the first micro switch 2w1 is turned off, the double-opening indicating lamp is turned off, the third micro switch 2w2 is turned on, and the second power supply conduction indicating lamp is turned on.

Specifically, as shown in fig. 42, the trigger protrusion 22 is disposed at the upper end of the driving disc 2, the trigger groove 23 is disposed at the lower end of the driving disc 2, the second micro switch 2w1 and the third micro switch 2w2 are respectively disposed at the left and right sides of the trigger protrusion 22, and the first micro switch 2w0 is disposed below the driving disc 2; the first micro switch 2w0 comprises a first deflector rod, one end of the first deflector rod is connected with the first micro switch 2w0, the other end of the first deflector rod is provided with a roller, the roller is arranged in the trigger groove 23, when the energy storage operating mechanism A is in a double-opening state, the roller of the first micro switch 2w0 is positioned in the trigger groove 23, at the moment, the first micro switch 2w0 is conducted, and the double-opening indicating lamp is lighted; when the energy storage operating mechanism A is switched from the double-opening state to the first power supply closing state, the driving disc 2 rotates anticlockwise, the trigger protrusion 22 pushes against the deflector rod of the second micro switch 2w1 to conduct, the trigger groove 23 moves from the upper part to the upper right side of the roller, the edge of the driving disc 2 pushes against the roller, the first micro switch 2w0 is turned off, and the double-opening indicating lamp is turned off; when the energy storage operating mechanism A is switched from the double-opening state to the second power switch-on state, the driving disc 2 rotates clockwise, the trigger protrusion 22 pushes against the deflector rod of the third micro switch 2w2 to conduct, the trigger groove 23 moves from the upper part to the upper left part of the roller, the edge of the driving disc 2 pushes against the roller, the first micro switch 2w0 is turned off, and the double-opening indicating lamp is turned off.

Preferably, as shown in fig. 9-11, is an embodiment of the drive turntable 3.

The driving turntable 3 comprises a first disk 340 and a second disk 341 which are oppositely arranged and are in mirror image structures, the upper ends of the first disk 340 and the second disk 341 are connected through two connecting shafts 33 which are arranged side by side, the connecting shafts 33 are positioned above the rotation center of the driving turntable 3, the left crank 31 and the right crank 30 are positioned below the rotation center of the poor turntable 3, the left crank 31 and the right crank 30 are positioned below the rotation center of the driving turntable 3, two ends of the left crank 31 and the right crank 30 are respectively connected with the first disk 340 and the second disk 341, and an included angle beta between the connecting line of the left crank 31 and the rotation center of the driving turntable 3 and the connecting line between the right crank 30 and the rotation center of the driving turntable 3 is less than 180 degrees and more than 0 degrees. Further, as shown in fig. 9, the driving turntable 3 has an axisymmetric structure.

Preferably, as shown in fig. 8-11, the driving turntable 3 further includes a turntable track shaft 32 disposed thereon, the middle of the turntable track shaft 32 is fixedly connected with the driving turntable 3, and two ends of the driving turntable are respectively inserted into two turntable track holes 12 of the mechanism support 1 and can reciprocate in the turntable track holes 12, and the shape of the turntable track holes 12 matches with the movement track of the turntable track shaft 32. Further, the turntable track hole 12 is an arc hole, and the center of the arc hole coincides with the rotation center of the driving turntable 3.

Preferably, as shown in fig. 8, the energy storage operating mechanism a further includes a motor for providing an external force for driving the turntable 3 to rotate, and the motor is connected with a turntable shaft hole of the driving turntable 3. Further, as shown in fig. 8 and 11, the energy storage operating mechanism a further includes a handle, a handle clamping groove is disposed below the handle, and when the handle is used to drive the driving turntable 3 to rotate, the lower end of the handle is inserted between the first disc 340 and the second disc 341 of the driving turntable 3 and clamped between the two connecting shafts 33, and the handle clamping groove is in limit fit with the turntable track shaft 32.

As shown in fig. 8,13-15, one embodiment of the mechanism support 1 is described.

The mechanism bracket 1 comprises a front side wall 10 and a rear side 11 which are oppositely arranged, wherein a left track hole 15, a right track hole 14, a disc pivot hole 16 and a turntable pivot hole 13 which are symmetrically arranged are formed in the front side wall 10 and the rear side wall 11, the left track hole 15 and the right track hole 14 on the front side wall 10 are symmetrically arranged with the left track hole 15 and the right track hole 14 on the rear side wall 11 respectively, and the disc pivot hole 16 and the turntable pivot hole 13 on the front side wall 10 are symmetrically arranged with the disc pivot hole 16 and the turntable pivot hole 13 on the rear side wall 11 respectively. Preferably, as shown in fig. 8,13-15, the front side wall 10 and the rear side wall 11 are provided with turntable track holes 12, and the turntable track holes 12 are symmetrically arranged. Preferably, as shown in fig. 8,13-15, two sides of the middle parts of the front side wall 10 and the rear side wall 11 are respectively provided with a left mounting arm 18 and a right mounting arm 17, and the left mounting arm 18 and the right mounting arm 17 on the front side wall 10 are respectively opposite to the left mounting arm 18 and the right mounting arm 17 on the rear side wall 11. Further, the left mounting arm 18 and the right mounting arm 17 of the same side wall are symmetrically arranged.

Preferably, the mechanism support 1 is in an integral structure, one end of the front side wall 10 is connected with one end of the rear side wall 11 through the connecting wall 19, two sides of the other end of the front side wall 10 are respectively provided with an assembling arm 102, the assembling arms 102 are connected with the front side wall 10 at right angles, the two assembling arms 102 are bent towards the direction of the rear side wall 11, the free end of each assembling arm 102 is provided with a clamping groove, two sides of the other end of the rear side wall 11 are respectively provided with a clamping arm 113, and the clamping arms 113 are clamped in the clamping grooves.

Specifically, as shown in fig. 13, a left rail hole 15 and a right rail hole 14 on the same side wall are respectively arranged at two sides of a disc pivot hole 16 of the side wall, the left rail hole 15 and the right rail hole 14 are arc-shaped holes, the circle center of the left rail hole 15, the circle center of the right rail hole 14 and the circle center of the disc pivot hole 16 are coincident, and the disc pivot hole 13 is positioned at the upper side of the disc pivot hole 16; the turntable track hole 12 is arranged on the upper side of the turntable pivot hole 13, the turntable track hole 12 is an arc hole, the circle center of the arc hole coincides with the circle center of the turntable pivot hole 13, the left mounting arm 18 and the right mounting arm 17 on the same side wall are respectively arranged at two ends of the middle part of the side wall, the lower end of the front side wall 10 is connected with the lower end of the rear side wall 11 through the connecting wall 19, two sides of the upper end of the front side wall 10 are respectively provided with an assembly arm 102, and two sides of the upper end of the rear side wall 11 are respectively provided with a clamping arm 113.

As shown in fig. 4,26-30, is an embodiment of the arc chute 3b.

The arc extinguishing chamber 3b comprises arc extinguishing walls 30b and arc extinguishing grid plates 31b, a first grid plate group 31b0, a second grid plate group 31b1, a third grid plate group 31b2 and a fourth grid plate group 31b3 are sequentially arranged between the two arc extinguishing walls 30b in an opposite mode at intervals, each grid plate group comprises a plurality of arc extinguishing grid plates 31b which are arranged side by side at intervals, and the distance between every two adjacent grid plate groups is greater than the distance between every two adjacent arc extinguishing grid plates 31b in the same grid plate group. Further, as shown in fig. 27 and 28, the first gate group 31b0, the second gate group 31b1, the third gate group 31b2, and the fourth gate group 31b3 are distributed in a fan shape.

Preferably, as shown in fig. 27, in the same gate group, two adjacent arc extinguishing gate sheets 31b are provided, and the gate high leg 311b and the gate low leg 312b of one arc extinguishing gate sheet 31b are respectively opposite to the gate low leg 312b and the gate high leg 311b of the other arc extinguishing gate sheet 31 b.

Preferably, as shown in fig. 29 and 30, the arc extinguishing gate 31b has a U-shaped structure, which includes a gate beam 310b, a gate high leg 311b and a gate low leg 312b respectively disposed at two ends of the gate beam 310b, the length of the gate high leg 311b > the length of the gate low leg 312b, the gate beam 310b, the gate high leg 311b and the gate low leg 312b enclose a C-shaped arc extinguishing slot 315b, the gate beam 310b is provided with an arc extinguishing slit 314b, and one end of the arc extinguishing slit 314b is identical to the arc extinguishing slot 315 b. Further, as shown in fig. 30, the gate high leg 311b and the gate low leg 312b are respectively connected to both ends of the gate beam 310b at right angles. Further, as shown in fig. 29 and 30, the arc extinguishing slit 314b is disposed at the middle of the grid beam 310b, and preferably, the arc extinguishing slit 314b is a rectangular groove. Further, as shown in fig. 29 and 30, the gate upper leg 311b and the gate lower leg 312b are each provided with a gate protrusion 313b that mates with the arc extinguishing wall 30 b. Preferably, as shown in fig. 27, the arc extinguishing wall 30b includes an arc extinguishing wall lower end 30b1 and an arc extinguishing wall upper end 30b2 respectively disposed at a lower end and an upper end thereof, a contact support avoidance groove 30b0 is disposed between the arc extinguishing wall lower end 30b1 and the arc extinguishing wall upper end 30b2 and on one side of the arc extinguishing wall 30b, a first limit groove 30b4 is disposed on the arc extinguishing wall lower end 30b1, the first limit groove 30b4 divides the arc extinguishing wall lower end 30b1 into two parts, namely a lower end left part 30b11 and a lower end right part 30b10, a second limit groove 30b30 is disposed at one vertex angle of the arc extinguishing wall upper end 30b2, and the second limit groove 30b30 is disposed between the first grid group 31b0 and the second grid group 31b 1.

As shown in fig. 4, the arc extinguishing chamber 3b and the contact system 3020 are assembled in the following manner:

the first grid set 31b0 is disposed on one side of the second power contact 2c, the second grid set 31b1 and the third grid set 31b2 are disposed on two sides of the load end contact 2a, the fourth grid set 31b3 is disposed on one side of the first power contact 2b, the first grid set 31b0 and the second grid set 31b1 are located between the second power contact 2c and the load end contact 2a, and the third grid set 31b2 and the fourth grid set 31b3 are located between the load end contact 2a and the first power contact 2 b.

As shown in fig. 35-37, is an embodiment of the first power base 1a.

As shown in fig. 35, the first power supply base 1a includes at least one lower assembly cavity 13a disposed thereon, the lower assembly cavity 13b includes a lower assembly cavity bottom wall 135a, and the lower assembly cavity bottom wall 135a is provided with a first spacing rib 130a, and a third exhaust port 132a and a fourth exhaust port 131a disposed on both sides of the first spacing rib 130 a. Further, as shown in fig. 35, a third spacing rib 136a is further disposed on the bottom wall 135a of the lower assembly cavity, the third spacing rib 136a and the first spacing rib 130a are respectively located at two sides of the fourth air outlet 135a, and the third spacing rib 136a and the first spacing rib 130a each extend upward from the bottom wall 135a of the lower assembly cavity. Further, as shown in fig. 35 and 37, both ends of the lower fitting chamber 13a are provided with a load end fitting stage 133a for fitting the load end contact 2a and a first power contact fitting stage 134a for fitting the first power contact 2b, respectively. Further, as shown in fig. 35, a pair of side walls of the lower assembly cavity 13a are further provided with lower half-shaft grooves for assembling the contact holders 300a of the movable contact assembly 30a, respectively.

Preferably, the third exhaust port 132a and the fourth exhaust port 131a are each composed of a plurality of exhaust holes arranged side by side.

Specifically, as shown in fig. 35, the first power supply base 1a includes four lower assembly cavities 13a arranged side by side, and insulation spaces between adjacent lower assembly cavities 13a are arranged; as shown in fig. 37, each lower assembly chamber 13a includes a lower assembly chamber bottom wall 135a, a first third limit rib 136a, a limit rib 130a, a third vent hole 132a, and a fourth vent hole 131a sequentially distributed from left to right are disposed on the lower assembly chamber bottom wall 135a, a first power contact assembly table 134a is disposed at a left end of the lower assembly chamber 13a, and a load end assembly table 133a is disposed at a right end thereof.

As shown in fig. 38-41, is an embodiment of the second power base 1 b.

The second power supply base 1b includes at least one upper assembly cavity 15b disposed thereon, the upper assembly cavity 15b includes an upper assembly cavity top wall 150b and a left side wall, the left side wall is of a stepped structure, and includes a first left side wall 10b, a second left side wall 1011b and a third left side wall 11b which are sequentially connected, one end of the upper assembly cavity top wall 150b is bent and connected with one end of the first left side wall 10b, a first air outlet 100b is disposed on the first left side wall 10b, a second air outlet 110b is disposed on the third left side wall 11b, a second limit rib 16b is disposed on the upper assembly cavity bottom wall 150b, and the second limit rib 16b extends downward from the upper assembly cavity top wall 150 b. Further, as shown in fig. 38, one end of the first left side wall 10b is connected to the upper assembly chamber top wall 150b at right angles, the other end is connected to one end of the second left side wall 1011b at right angles, the other end of the second left side wall 1011b is connected to one end of the third left side wall 11b at right angles, the upper assembly chamber top wall 150b is parallel to the second left side wall 1011b, and the first left side wall 10b is parallel to the third left side wall 11 b. Preferably, as shown in fig. 39, the other end of the upper mounting cavity 15b is provided with a second power mounting stand 130b for mounting the second power contact 2 c. Further, as shown in fig. 41, the lower ends of the pair of side walls of the upper assembly chamber 15b are also provided with upper half-shaft grooves for assembling the contact holders 300a of the movable contact assembly 30a, respectively.

Preferably, the first exhaust port 100b and the second exhaust port 110b are each composed of a plurality of exhaust holes arranged side by side as shown in the drawing.

Specifically, as shown in fig. 38-40, the second power supply base 1b includes 4 upper assembly cavities 15b arranged side by side, and insulation spaces between adjacent upper assembly cavities 15b are arranged; as shown in fig. 41, each upper assembly chamber 15b includes an upper assembly chamber top wall 150b, the upper assembly chamber top wall 150b is provided with a second limiting rib 16b, the second limiting rib 16b extends downwards from the upper assembly chamber top wall 150b, the right end of the upper assembly chamber 15b is provided with a second power assembly table 130b, the left end is provided with a left side wall, the left side wall includes a first left side wall 10b, a second left side wall 1011b and a third left side wall 11b, the upper end of the first left side wall 10b is connected with the left end of the upper assembly chamber top wall 150b at a right angle, the lower end is connected with the right end of the second left side wall 1011b at a right angle, the left end of the second left side wall 1011b is connected with the upper end of the third left side wall 11b, the first left side wall 10b is provided with a first air outlet 100b, and the third left side wall 11b is provided with a second air outlet 110b.

As shown in fig. 4, the arc extinguishing chamber 3b, the contact system 3020, the first power supply base 1a, and the second power supply base 1b are assembled as follows:

the two ends of the contact support 300a of the moving contact assembly 30a of the contact system 3020 are rotatably disposed between the upper half shaft groove and the lower half shaft groove, the load end contact 2a is fixedly disposed on the load end mounting table 113a, the first power contact 2b is fixedly disposed on the first power contact mounting table 134a, and the second power contact 2c is fixedly disposed on the second power mounting table 130 b; the upper end and the lower end of the arc extinguishing chamber 3b are respectively arranged in the upper assembling cavity 15b and the lower assembling cavity 13b, the upper end 30b2 of the arc extinguishing wall 30b is commissioned between the first left side wall 10b and the third limit rib 16b, the first left side wall 10b and the second left side wall 1011b are respectively in limit fit with the side edge of the second limit groove 30b30, the first limit groove 30b4 of the lower end 30b1 of the arc extinguishing wall 30b is in limit fit with the first limit rib 130b, the left end 30b11 of the lower end 30b1 of the arc extinguishing wall is clamped between the load end assembling table 133a and the first limit rib 130a, the right end 30b10 of the lower end is clamped between the third limit rib 136a and the first limit rib 130a, the first grating sheet group 31b0 of the arc extinguishing chamber 3b is correspondingly matched with the first exhaust port 100b, the second grating sheet group 31b1 is correspondingly matched with the second exhaust port 110b, the third grating sheet group 31b2 is correspondingly matched with the third exhaust port 132a, the fourth grating sheet group 31b 3b is correspondingly matched with the fourth exhaust port 31b, and the fourth grating sheet group 31b is oppositely arranged with the fourth exhaust port 31b is oppositely arranged to the fourth grating sheet 31b 1b, and the fourth grating sheet group 31b is oppositely arranged to the fourth exhaust port 1b is oppositely arranged.

As shown in fig. 16-25, is one embodiment of the movable contact assembly 30 a.

The moving contact assembly 30a includes a contact support 300a, contact pieces 301a, a spring piece 302a, and a contact fixing shaft 303a, a contact assembly groove 3000a is provided on one side of the contact support 300a, a contact partition 3002a is provided in the middle of the contact assembly groove 3000a, two contact pieces 301a are oppositely disposed in the contact assembly groove 3000a and are respectively located at two sides of the contact partition 3002a, two moving contacts having contact grooves are formed at two ends of the two contact pieces 301a, two spring pieces 302a are respectively disposed at two sides of the two contact pieces 301a, two ends of each spring piece 302a respectively press against two ends of one contact piece 301a, and the contact fixing shaft 303a passes through the contact piece 301a, the spring piece 302a and the contact support 300a to fix the contact piece 301a, the spring piece 302a and the contact support 300a together. And one ends of the first power contact 2b, the load end contact 2a and the second power contact 2c are respectively provided with a contact knife which can be inserted into a contact groove of the moving contact and are in plug-in fit with the moving contact.

Preferably, as shown in fig. 22 and 23, the contact piece 301a has a "U" -shaped structure, and includes a mounting portion 3010a, contact arms 3011a and moving contacts 3012a, where two contact arms 3011a are respectively bent and connected with two ends of the mounting portion 3010a, an included angle between each contact arm 3011a and the mounting portion 3010a is α,90 ° < α < 180 °, one moving contact 3012a is disposed at a free end side of each contact arm 3011a, the contact arms 3011a and the mounting portion 3010a are located in the same plane, and two moving contacts 3012a are located at the same side of the two contact arms 3011 a. Further, as shown in fig. 22, a contact mounting hole 3014a for passing the contact fixing shaft 303a is further provided in the middle of the fitting portion 3010 a. Further, as shown in fig. 22, the fitting portion 3010a is provided with at least one contact protrusion 3013a on an edge facing the bottom side of the contact fitting groove 3000 a. Further, as shown in fig. 22, the number of the contact protrusions 3013a is 2, and two contact protrusions 3013a are spaced apart. Further, as shown in fig. 22 and 23, the edges of the contact piece 301a located at the two contact arms 3011a are arc-shaped.

Preferably, as shown in fig. 24 and 25, the spring piece 302a includes a spring piece connection portion 3020a and spring arms 3021a, the two spring arms 3021a are respectively connected with two ends of the spring piece connection portion 3020a in a bending manner, and the two spring arms 3021a are inclined to one side of the plane of the spring piece connection portion 3020 a.

Preferably, as shown in fig. 19-21, the contact support 300a includes a support body 3007a with a cylindrical structure, a contact assembly slot 3000a is provided on one side of the support body 3007a, a contact spacer 3002a is provided in the middle of the contact assembly slot 3000a, contact limiting slots 3001a extending along the width direction of the contact assembly slot 3000a are provided at both ends of the bottom side of the contact assembly slot 3000a, the two contact limiting slots 3001a are respectively located at both sides of the contact spacer 3002a, a rotation shaft mounting hole 3004a is further provided in the middle of the support body 3007a, a first annular table 3005a and a second annular table 3006a concentric with each other are provided outside both ends of the rotation shaft mounting hole 3004a, an outer diameter of the first annular table 3005a is greater than an outer diameter of the second annular table 3006a, and the first annular table 3005a is disposed between the support body 3007a and the second annular table 3006 a. Further, as shown in fig. 17 and 18, the supporting body 3007a is further provided with a plurality of lightening holes.

When the contact pieces 301a are assembled with the contact holder 300a, as shown in fig. 16 and 18, the two contact pieces 301a are disposed on both sides of the contact spacer 3002a, respectively, and the two fitting portions 3010a are abutted against both sides of the contact spacer 3002a, as shown in fig. 18, the upper side edges of the fitting portions 3010a are opposed to the bottom sides of the contact fitting grooves 3000a, and the contact protrusions 3013a are in a spacing fit with the contact spacing grooves 3001 a. Preferably, as shown in fig. 18, the bottom side of the contact fitting groove 3000a is in contact connection with the edge of the fitting portion 3010a where the contact protrusion 3013a is provided. The maximum height of the contact spacer 3002a is the same as the maximum thickness of the fitting portion 3010 a. When the movable contact assembly 30a is assembled between the first power base 1a and the second power base 1b, the second annular table 3006a of the contact support 300a is rotatably disposed between the lower half-shaft groove of the first power base 1a and the upper half-shaft groove of the second power base 1 b. The linkage of the plurality of movable contact assemblies 30a can be achieved by: the linkage shaft sequentially passes through the rotating shaft mounting holes 3004a of the plurality of moving contact assemblies 30a to connect the plurality of moving contact assemblies 30a together, so as to realize linkage of the plurality of moving contact assemblies 30 a.

As shown in fig. 31 and 32, the load terminal contact 2a includes a load terminal wiring board 20a, a load terminal transition board 21a, and a load terminal contact blade 33a, one end of the load terminal transition board 21a is connected to the load terminal wiring board 20a at a right angle, the other end is connected to the load terminal contact blade 22a at a right angle, the load terminal wiring board 20a and the load terminal contact blade 22a are respectively located at two sides of the load terminal transition board 21a, one end of the load terminal contact blade 22a is a contact blade matched with the moving contact, and the load terminal contact blade 22a is perpendicular to the load terminal wiring board 20 a. Preferably, as shown in fig. 31, chamfer structures are provided at the side edges of the upper end and the lower end of the contact blade at one end of the load end contact blade 22a, so as to facilitate the plug-in fit with the moving contact assembly 30 a.

As shown in fig. 33, the first power contact 2b includes a first power wiring board 20b, a first power transition board 22b and a first power contact blade 21b, one end of the first power transition board 22b is connected to the first power wiring board 20b, and the other end of the first power transition board 22b is connected to the first power contact blade 21b after being twisted, so that the first power contact blade 21b is perpendicular to the first power wiring board 20 b. One end of the first power contact blade 21b is a contact blade matched with the moving contact, preferably, as shown in fig. 33, a chamfer structure is arranged on the side edge of the contact blade of the first power contact blade 21b, so that the contact blade is convenient to be in plug-in matched with the moving contact assembly 30 a.

As shown in fig. 34, the second power contact 2c includes a second power wiring board 20c, a second power transition board 22c, and a second power contact blade 21c, where one end of the second power transition board 22c is connected to the second power wiring board 20c, and the other end of the second power transition board 22c is connected to the second power contact blade 21c after being twisted, so that the second power contact blade 21c is perpendicular to the second power wiring board 20 c. One end of the second power contact blade 21c is a contact blade matched with the moving contact, preferably, as shown in fig. 34, a chamfer structure is arranged on the side edge of the contact blade of the second power contact blade 21c, so that the second power contact blade can be conveniently matched with the moving contact assembly 30a in a plugging manner.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention 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 invention, and these should be considered to be within the scope of the invention.

Claims

1. An automatic transfer switching device comprises at least one group of contact systems (3020), each group of contact systems (3020) comprises a moving contact assembly (30 a) and a load end contact (2 a), a first power contact (2 b) and a second power contact (2 c) which are matched with the moving contact assembly (30 a), the load end contact (2 a) is positioned between the first power contact (2 b) and the second power contact (2 c), the moving contact assembly (30 a) is rotated to enable the load end contact (2 a) and the first power contact (2 b) to be conducted, or the load end contact (2 a) and the second power contact (2 c) to be conducted;

the method is characterized in that: the automatic transfer switching device further comprises arc extinguishing chambers (3 b) matched with the contact systems (3020), and each group of contact systems (3020) is correspondingly matched with one arc extinguishing chamber (3 b); four grating sheet groups are arranged in the arc extinguishing chamber (3 b), and the four grating sheet groups are a first grating sheet group (31 b 0), a second grating sheet group (31 b 1), a third grating sheet group (31 b 2) and a fourth grating sheet group (31 b 3) which are arranged at intervals in sequence; the first grid plate group (31 b 0) is arranged on one side of the second power contact (2 c), the second grid plate group (31 b 1) and the third grid plate group (31 b 2) are respectively arranged on two sides of the load end contact (2 a), the fourth grid plate group (31 b 3) is arranged on one side of the first power contact (2 b), the first grid plate group (31 b 0) and the second grid plate group (31 b 1) are positioned between the second power contact (2 c) and the load end contact (2 a), and the third grid plate group (31 b 2) and the fourth grid plate group (31 b 3) are positioned between the load end contact (2 a) and the first power contact (2 b);

The automatic transfer switching device further comprises a first power supply base (1 a) and a second power supply base (1 b), wherein the first power supply base (1 a) comprises at least one lower assembling cavity (13 a) arranged on the first power supply base, the second power supply base (1 b) comprises at least one upper assembling cavity (15 b) arranged on the second power supply base, and the lower assembling cavity (13 a) and the upper assembling cavity (15 b) are matched to form an assembling cavity (1 ab) for assembling the contact system (3020); the movable contact assembly (30 a) is rotatably arranged in the middle of the assembly cavity (1 ab), the second power contact (2 c) is fixedly arranged on the second power base (1 b) and positioned at one end of the upper assembly cavity (15 b), the first power contact (2 b) and the load end contact (2 a) are fixedly arranged on the first power base (1 a) and positioned at two ends of the lower assembly cavity (13 a) respectively, and the upper end and the lower end of the arc extinguishing chamber (3 b) are inserted into the upper assembly cavity (15 b) and the lower assembly cavity (13 a) and are in limit fit with the second power base (1 b) and the first power base (1 a) respectively;

the arc extinguishing chamber (3 b) comprises two arc extinguishing walls (30 b) which are oppositely arranged, each arc extinguishing wall (30 b) comprises an arc extinguishing wall upper end (30 b 2) and an arc extinguishing wall lower end (30 b 1) which are respectively arranged at the upper end and the lower end, and a first limit groove (30 b 4) which extends along the length direction of the arc extinguishing wall (30 b) is arranged on the arc extinguishing wall lower end (30 b 1); the lower assembly cavity (13 a) comprises a lower assembly cavity bottom wall (135 a), a first limiting rib (130 a) is arranged on the lower assembly cavity bottom wall (135 a), and the first limiting rib (130 a) is inserted into the first limiting groove (30 b 4) to be in limiting fit with the first limiting groove.

2. The automatic transfer switching device according to claim 1, wherein:

the movable contact assembly (30 a) comprises two movable contacts, when the automatic transfer switch is in a double-opening state, one movable contact is positioned between the second power contact (2 c) and the load end contact (2 a) and between the first grid sheet group (31 b 0) and the second grid sheet group (31 b 1), and the other movable contact is positioned between the load end contact (2 a) and the first power contact (2 b) and between the third grid sheet group (31 b 2) and the fourth grid sheet group (31 b 3);

when the automatic transfer switching device is in a double-switching-off state, the moving contact assembly (30 a) rotates in the direction D1, so that the two moving contacts are respectively contacted and conducted with the load end contact (2 a) and the second power contact (2 c), and the automatic transfer switching device enters a second power switching-on state; the movable contact assembly (30 a) rotates in the direction D2, so that the two movable contacts are respectively contacted and conducted with the load end contact (2 a) and the first power contact (2 b), and the automatic transfer switch enters a first power switch-on state; the direction D1 and the direction D2 are opposite directions.

3. The automatic transfer switching device according to claim 1, wherein: the second power contact (2 c) and the first power contact (2 b) are respectively positioned at the upper side and the lower side of the moving contact assembly (30 a), the load end contact (2 a) is positioned at one side of the moving contact assembly (30 a), and the load end contact (2 a), the first power contact (2 b) and the second power contact (2 c) are positioned at three vertexes of an isosceles triangle; the arc extinguishing chamber (3 b) is arranged on one side of the moving contact assembly (30 a), the first power contact (2 b) is arranged corresponding to the lower end of the arc extinguishing chamber (3 b), the second power contact (2 c) is arranged corresponding to the upper end of the arc extinguishing chamber (3 b), and the load end contact (2 a) is arranged corresponding to the middle part of the arc extinguishing chamber (3 b); the first grid sheet group (31 b 0), the second grid sheet group (31 b 1), the third grid sheet group (31 b 2) and the fourth grid sheet group (31 b 3) are distributed in a fan shape.

4. An automatic transfer switching device according to claim 1 or 3, wherein: each grid sheet group comprises a plurality of arc-extinguishing grid sheets (31 b) which are arranged at intervals side by side, each arc-extinguishing grid sheet (31 b) is of a U-shaped structure and comprises a grid sheet cross beam (310 b) and grid sheet high feet (311 b) and grid sheet low feet (312 b) which are respectively arranged at two ends of the grid sheet cross beam (310 b), the length of each grid sheet high foot (311 b) is greater than that of each grid sheet low foot (312 b), each grid sheet high foot (311 b), each grid sheet cross beam (310 b) and each grid sheet low foot (312 b) enclose into a C-shaped arc-extinguishing groove (315 b), arc-extinguishing slits (314 b) are formed in the grid sheet cross beam (310 b), and one end of each arc-extinguishing slit (314 b) is communicated with each arc-extinguishing groove (315 b).

5. The automatic transfer switching device of claim 4, wherein: the grid plate high foot (311 b) and the grid plate low foot (312 b) are respectively connected with two ends of the grid plate cross beam (310 b) at right angles, grid plate bulges (313 b) matched with the arc extinguishing wall (30 b) are arranged on the grid plate high foot (311 b) and the grid plate low foot (312 b), the arc extinguishing slit (314 b) is arranged in the middle of the grid plate cross beam (310 b), and the arc extinguishing slit (314 b) is a rectangular groove.

6. The automatic transfer switching device of claim 4, wherein: in the same grid group, two adjacent arc-extinguishing grid plates (31 b), a grid plate high pin (311 b) and a grid plate low pin (312 b) of one arc-extinguishing grid plate (31 b) are respectively arranged opposite to a grid plate low pin (312 b) and a grid plate high pin (311 b) of the other arc-extinguishing grid plate (31 b).

7. The automatic transfer switching device according to claim 1, wherein: the first limiting groove (30 b 4) is positioned between the third grid plate group (31 b 2) and the fourth grid plate group (31 b 3), a second limiting groove (30 b 30) is arranged at one vertex angle of the upper end (30 b 2) of the arc extinguishing wall, the second limiting groove (30 b 30) is a right-angle groove, and the first limiting groove is positioned between the first grid plate group (31 b 0) and the second grid plate group (31 b 1);

the upper assembly cavity (15 b) comprises an upper assembly cavity top wall (150 b) and a left side wall, a second limiting rib (16 b) is arranged on the upper assembly cavity top wall (150 b), the left side wall is of a step structure and comprises a first left side wall (10 b), a second left side wall (1011 b) and a third left side wall (11 b) which are sequentially bent and connected, and one end of the first left side wall (10 b) is bent and connected with one end of the upper assembly cavity top wall (150 b); the upper end (30 b 2) of the arc extinguishing wall is limited between the first left side wall (10 b) and the second limiting rib (16 b), and the first left side wall (10 b) and the second left side wall (1011 b) are respectively in limiting fit with two side edges of the second limiting groove (30 b 30).

8. The automatic transfer switching device of claim 7, wherein: the first grid plate group (31 b 0) and the second grid plate group (31 b 1) are positioned in the upper assembly cavity (15 b), and the third grid plate group (31 b 2) and the fourth grid plate group (31 b 3) are positioned in the lower assembly cavity (13 a); a third air outlet (132 a) which is correspondingly matched with the third grid plate group (31 b 2) and a fourth air outlet (131 a) which is correspondingly matched with the fourth grid plate group (31 b 3) are also arranged on the bottom wall (135 a) of the lower assembly cavity, and the third air outlet (132 a) and the fourth air outlet (131 a) are respectively positioned at two sides of the first limiting rib (130 a); the first left side wall (10 b) is provided with a first exhaust port (100 b) correspondingly matched with the first grid sheet group (31 b 0), and the third left side wall (11 b) is provided with a second exhaust port (110 b) correspondingly matched with the second grid sheet group (31 b 1).

9. The automatic transfer switching device of claim 7, wherein: the lower assembly cavity bottom wall (135 a) is further provided with a third limiting rib (136 a), the first limiting groove (30 b 4) divides the lower end (30 b 1) of the arc extinguishing wall into two parts, namely a lower end left part (30 b 11) and a lower end right part (30 b 10), and the lower end right part (30 b 10) is limited between the first limiting rib (130 a) and the third limiting rib (136 a).

10. The automatic transfer switching device according to claim 1, wherein: the first power supply base (1 a) is provided with at least one lower assembly cavity (13 a), two ends of the lower assembly cavity (13 a) are respectively provided with a load end assembly table (133 a) for assembling a load end contact (2 a) and a first power supply contact assembly table (134 a) for assembling a first power supply contact (2 b), the lower assembly cavity (13 a) comprises a lower assembly cavity bottom wall (135 a), the lower assembly cavity bottom wall (135 a) is provided with a third exhaust port (132 a) correspondingly matched with a third grid plate group (31 b 2), a fourth exhaust port (131 a) correspondingly matched with a fourth grid plate group (31 b 3), a first limit rib (130 a) and a third limit rib (136 a), the first limit rib (130 a) is arranged between the third exhaust port (132 a) and the fourth exhaust port (131 a), the third limit rib (136 a) is arranged between the fourth exhaust port (131 a) and the first power supply contact assembly table (134 a), and the first limit rib (130 a) and the third limit rib (136 a) are arranged in parallel with the lower assembly cavity bottom wall (135 a) at intervals.

11. The automatic transfer switching device according to claim 1, wherein: the second power supply base (1 b) is provided with at least one upper assembly cavity (15 b), one end of the upper assembly cavity (15 b) is provided with a second power supply assembly table (130 b) for assembling a second power supply contact (2 c), the other end of the upper assembly cavity is provided with a left side wall, the left side wall is provided with a first exhaust port (100 b) which is correspondingly matched with the first grid plate group (31 b 0) and a second exhaust port (110 b) which is correspondingly matched with the second grid plate group (31 b 1), the upper assembly cavity (15 b) comprises an upper assembly cavity top wall (150 b) and a left side wall, the left side wall is of a step structure, the left side wall comprises a first left side wall (10 b), a second left side wall (1011 b) and a third left side wall (11 b) which are sequentially connected, one end of the upper assembly cavity top wall (150 b) is bent and connected with one end of the first left side wall (10 b), and the first exhaust port (100 b) and the second exhaust port (110 b) are respectively arranged on the first left side wall (10 b) and the third left side wall (11 b), and the inner side of the upper assembly cavity (150 b) is provided with a second limiting rib (16 b) which extends downwards.

12. The automatic transfer switching device according to claim 1, wherein: the movable contact assembly (30 a) comprises a contact support (300 a), contact pieces (301 a), spring pieces (302 a) and a contact fixing shaft (303 a), wherein a contact assembly groove (3000 a) is formed in one side of the contact support (300 a), a contact partition plate (3002 a) is arranged in the middle of the contact assembly groove (3000 a), the two contact pieces (301 a) are oppositely arranged in the contact assembly groove (3000 a) and are respectively located at two sides of the contact partition plate (3002 a), two movable contacts with the contact grooves are oppositely formed at two ends of the two contact pieces (301 a), two spring pieces (302 a) are arranged in the contact assembly groove (3000 a) and are respectively arranged at two sides of the two contact pieces (301 a), two ends of each spring piece (302 a) are respectively abutted against two ends of one contact piece (301 a), and the contact fixing shaft (303 a) penetrates through the contact pieces (301 a), the spring pieces (302 a) and the contact support (300 a) to fix the contact pieces (301 a).

13. The automatic transfer switching device of claim 12, wherein: the contact piece (301 a) is of a U-shaped structure and comprises an assembling part (3010 a), contact arms (3011 a) and movable contacts (3012 a), the two contact arms (3011 a) are respectively connected with two ends of the assembling part (3010 a) in a bending way, an included angle between each contact arm (3011 a) and the assembling part (3010 a) is alpha, 90 degrees is less than 180 degrees, one movable contact (3012 a) is arranged at one side of the free end of each contact arm (3011 a), the contact arms (3011 a) and the assembling part (3010 a) are located in the same plane, and the two movable contacts (3012 a) are located at the same side of the two contact arms (3011 a); at least one contact protrusion 3013a is arranged on the edge of the assembling part 3010a facing the bottom side of the contact assembling groove 3000 a; at least one contact limiting groove (3001 a) is formed in the bottom side of the contact assembly groove (3000 a), and the contact limiting groove (3001 a) is in limiting fit with the contact protrusion (3013 a).