CN218730519U

CN218730519U - Automatic change-over switch

Info

Publication number: CN218730519U
Application number: CN202222994794.0U
Authority: CN
Inventors: 万小东; 蒋天禄
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-24
Anticipated expiration: 2032-11-10

Abstract

The utility model belongs to the technical field of low-voltage apparatus, an automatic change-over switch is disclosed. The arc extinguishing device comprises a contact arc extinguishing mechanism, a transmission mechanism and a driving mechanism, wherein a rocker arm component of the contact arc extinguishing mechanism rotates to drive a moving contact to rotate; the transmission mechanism comprises a transmission connecting rod, a suspension rod and a rotating shaft, the transmission connecting rod can rotate around a connecting rod fulcrum, one end of the suspension rod is connected with the rotating shaft, the other end of the suspension rod is provided with a connecting shaft, the connecting shaft is rotatably connected in the first waist-shaped hole, the transmission connecting rod can drive the suspension rod and the rotating shaft to rotate through rotation, and the rotating shaft is connected with the rocker arm assembly to drive the rocker arm assembly to rotate; the driving mechanism comprises an electromagnetic driving mechanism and a guiding mechanism, the electromagnetic driving mechanism comprises an electromagnetic driving assembly and a transmission shaft, and the electromagnetic driving assembly can drive the transmission shaft to selectively move towards two preset directions; the electromagnetic guide driving piece of the guide mechanism can drive the guide piece to rotate, so that the guide piece guides the transmission shaft to move towards the preset direction. The automatic change-over switch has strong switching-on and switching-off capacity and long electric service life.

Description

Automatic change-over switch

Technical Field

The utility model relates to a low-voltage apparatus technical field especially relates to automatic change-over switch.

Background

The automatic change-over switch is a common low-voltage apparatus, and is often used for switching between two power supplies to ensure that when one power supply fails or stops supplying power, the other power supply can be quickly switched to ensure that a load loop supplies power normally. In a power distribution system, an automatic transfer switch is mainly used in important occasions where power failure is not allowed or long-time power failure is not allowed, and the switch needs to meet complex line load and is often transferred, so that the automatic transfer switch is required to have good connection and disconnection capacity and long power service life.

In the current market, most automatic change-over switches have low electric performances such as switching-on and breaking capacity, electric service life and the like, and the main reasons are that the automatic change-over switches are limited by mechanical structures, the switching speed of the switching-on and switching-off switches is low, and the reliability of the rotation positioning is poor; the space between the two-phase contacts is small, so that the space of the arc extinguishing part of each phase of contact is small, the arc generated when a product is opened and closed can not be quickly extinguished, and therefore, the very high electrical performance is difficult to achieve.

Therefore, there is a need for an improved automatic transfer switch to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic change-over switch has solved the not high problem of switch-on breaking capacity and electric life-span of current automatic change-over switch.

To achieve the purpose, the utility model adopts the following technical proposal:

an automatic transfer switch comprising:

the contact arc extinguishing mechanism comprises a first path of contact mechanism and a second path of contact mechanism which are identical in structure, wherein the first path of contact mechanism comprises a first path of static contact, a moving contact and a rocker arm assembly, the rocker arm assembly is rotatably connected with the moving contact, and the moving contact can be driven to rotate by the rotation of the rocker arm assembly;

the transmission mechanism comprises a first-path transmission mechanism and a second-path transmission mechanism which are identical in structure, the first-path transmission mechanism comprises a transmission connecting rod, a suspension rod and a rotating shaft, a first waist-shaped hole and a second waist-shaped hole are formed in two ends of the transmission connecting rod respectively, a connecting rod fulcrum is arranged between the first waist-shaped hole and the second waist-shaped hole, the transmission connecting rod can rotate around the connecting rod fulcrum, one end of the suspension rod is connected with the rotating shaft, the other end of the suspension rod is provided with a connecting shaft, the connecting shaft is rotatably connected into the first waist-shaped hole, the transmission connecting rod can drive the suspension rod and the rotating shaft to rotate through rotation, and the rotating shaft is connected with the rocker arm assembly to drive the rocker arm assembly to rotate;

the driving mechanism comprises an electromagnetic driving mechanism and a guiding mechanism, the electromagnetic driving mechanism comprises an electromagnetic driving assembly and a transmission shaft, the transmission shaft is rotatably connected in the second waist-shaped hole, and the electromagnetic driving assembly can drive the transmission shaft to selectively move towards two preset directions so that the transmission shaft drives the first-path contact mechanism to be switched on and switched off or drives the second-path contact mechanism to be switched on and switched off; the guide mechanism comprises a guide piece and an electromagnetic guide driving piece, wherein the electromagnetic guide driving piece can drive the guide piece to rotate, so that the guide piece guides the transmission shaft to move in the preset direction.

As an alternative, the electromagnetic drive assembly comprises:

the device comprises a driving electromagnet and a top rod, wherein one end of the top rod is connected to the driving end of the driving electromagnet;

one end of the L-shaped lever is rotatably connected to the ejector rod;

the transmission connecting lever, the both ends of transmission connecting lever rotate respectively connect in the other end of L type lever with the transmission shaft, the driving electromagnet can drive the ejector pin drives L type lever rotates, in order to pass through the drive of transmission connecting lever the transmission shaft is followed it removes to predetermine the direction.

As an alternative, a mounting plate is arranged between the transmission mechanism and the driving mechanism, a V-shaped hole is arranged on the mounting plate, the V-shaped hole extends towards two preset directions, the transmission shaft moves in the V-shaped hole, and when the transmission shaft moves from bottom to top, the guide member blocks one of the preset directions, so that the transmission shaft moves towards the other preset direction.

As an alternative, a guide fulcrum is arranged in the middle of the guide piece, one end of the guide piece is guided to the transmission shaft, the other end of the guide piece is connected with the driving end of the electromagnetic guide driving piece, and the electromagnetic guide driving piece can drive the guide piece to rotate around the guide fulcrum.

As an alternative, the electromagnetic steering drive comprises:

the pressing plate is rotatably connected with the other end of the guide piece;

the guide electromagnetic part is opposite to the pressing plate, the elastic part is connected between the pressing plate and the guide electromagnetic part, the guide electromagnetic part loses power, the pressing plate bounces off under the elasticity of the elastic part, and the guide electromagnetic part is electrified to adsorb the pressing plate to press the elastic part.

Alternatively, the elastic member is a compression spring.

As an alternative, the rocker arm assembly comprises:

one end of the rocker arm is fixedly connected with the rotating shaft;

the two ends of the moving contact connecting rod are respectively connected with the other end of the rocker arm and the moving contact in a rotating mode, one end of the moving contact is arranged in a rotating mode through a moving contact fulcrum, the rotating shaft can drive the rocker arm to rotate, and the moving contact is driven to rotate through the moving contact connecting rod, so that the moving contact and the I-way static contact are closed or disconnected.

As an alternative, the second-path contact mechanism includes a second-path fixed contact, and the first-path fixed contact is connected with the second-path fixed contact and is set to be an integrated structure.

As an alternative, the contact arc extinguishing mechanism further comprises:

the arc extinguishing chamber, be provided with in the middle of the arc extinguishing chamber and separate the plate washer, it will to separate the plate washer the arc extinguishing chamber falls into two arc extinguishing chambers, I way contact mechanism with II way contact mechanism set up respectively in two in the arc extinguishing chamber.

Alternatively, the baffle plate extends in a curve, so that the air outlet of the arc-extinguishing chamber is larger than the air inlet of the arc-extinguishing chamber.

Has the beneficial effects that:

the utility model provides an automatic change over switch through setting up drive mechanism into transmission connecting rod and suspension rod complex mode, can make and keep great distance between two moving contacts to can reserve sufficient space for setting up of explosion chamber, and then can extinguish the electric arc that produces when the switch switches on and off fast, improve automatic change over switch's electric life. In addition, the electromagnetic driving assembly is arranged to drive the transmission shaft to move in the preset direction, so that the purpose of driving the contact mechanism of the I path to be switched on and switched off or driving the contact mechanism of the II path to be switched on and switched off is achieved, the electromagnetic guiding driving piece is arranged to drive the guide piece to rotate so that the guide piece guides the transmission shaft to move towards the preset direction, the switching speed of the switching on and switching off can be guaranteed to be fast, the reliability of driving action is high, and the switching-on and switching-off capacity of the automatic transfer switch is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art arc chute;

fig. 2 is a schematic structural diagram of an arc extinguish chamber provided by an embodiment of the invention;

fig. 3 is a schematic view of an overall structure of an automatic transfer switch according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a contact arc-extinguishing mechanism provided by the embodiment of the invention;

fig. 5 is a schematic structural diagram of a transmission mechanism provided in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a suspension rod and a rotating shaft provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a transmission link according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a transmission mechanism and a contact arc extinguishing mechanism provided by an embodiment of the invention;

fig. 9 is a schematic view of an internal structure of the arc extinguish chamber according to an embodiment of the present invention.

In the figure:

1. a contact arc extinguishing mechanism; 11. a path I contact mechanism; 111. i, a path of static contact is formed; 112. a moving contact; 1121. a moving contact fulcrum; 113. a rocker arm assembly; 1131. a rocker arm; 1132. a moving contact connecting rod; 12. a second path of contact mechanism; 121. II, static contacts; 13. an arc extinguishing chamber; 131. a baffle plate; 132. a side plate; 133. an arc extinguishing piece; 134. arc extinguishing grid pieces;

2. a transmission mechanism; 21. a path I transmission mechanism; 211. a transmission connecting rod; 2111. a first kidney-shaped hole; 2112. a second kidney-shaped hole; 2113. a connecting rod fulcrum; 212. a suspension rod; 2121. a connecting shaft; 213. a rotating shaft; 22. II, a transmission mechanism;

31. an electromagnetic drive mechanism; 311. an electromagnetic drive assembly; 3111. driving an electromagnet; 3112. a top rod; 3113. an L-shaped lever; 3114. a transmission crank arm; 312. a drive shaft; 32. a guide mechanism; 321. a guide member; 3211. a guide fulcrum; 322. an electromagnetic steering drive; 3221. pressing a plate; 3222. a guide electromagnetic member; 3223. an elastic member;

4. mounting a plate; 41. a V-shaped hole;

z1, a lever fulcrum; f1, a first action point; f2, second action point.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

As shown in fig. 1, an arc extinguishing chamber 13 of a conventional automatic transfer switch is provided, and contact mechanisms are disposed on both sides of the arc extinguishing chamber 13. Since the width L1 of the arc extinguishing chamber 13 is small, the space of the arc extinguishing part of the contact is small, and the arc generated when the product is opened and closed cannot be quickly extinguished. Therefore, as shown in fig. 2, an arc extinguishing chamber 13 structure with a large arc extinguishing space is designed, the width L2 of the arc extinguishing chamber 13 is large, correspondingly, the distance between two paths of contacts on two sides of the arc extinguishing chamber 13 is long, and the original structures of the moving contact driving mechanism and the transmission mechanism cannot meet the requirements of rapidly and stably opening and closing the switch.

In order to solve the above problems, as shown in fig. 3 and 4, the present embodiment provides an automatic transfer switch, which can rapidly extinguish the arc generated when the switch is opened and closed, and has a fast switching speed and high reliability of rotational positioning. Specifically, the automatic transfer switch comprises a contact arc extinguishing mechanism 1, the contact arc extinguishing mechanism 1 comprises a first-path contact mechanism 11 and a second-path contact mechanism 12 which are identical in structure, the first-path contact mechanism 11 comprises a first-path static contact 111, a moving contact 112 and a rocker arm component 113, the rocker arm component 113 is rotatably connected with the moving contact 112, and the rocker arm component 113 rotates to drive the moving contact 112 to rotate. The second-path contact mechanism 12 is the same as the first-path contact mechanism 11, and is symmetrically disposed on both sides of the arc extinguish chamber 13, and the first-path contact mechanism 11 is taken as an example in the present embodiment for description.

Referring to fig. 3 and 5-8, in order to drive the rocker arm assembly 113 to rotate, the automatic transfer switch further includes a transmission mechanism 2, the transmission mechanism 2 includes a first transmission mechanism 21 and a second transmission mechanism 22 having the same structure, the first transmission mechanism 21 is connected to the first contact mechanism 11, and the second transmission mechanism 22 is connected to the second contact mechanism 12. The i-path transmission mechanism 21 includes a transmission link 211, a suspension rod 212, and a rotation shaft 213, two ends of the transmission link 211 are respectively provided with a first waist-shaped hole 2111 and a second waist-shaped hole 2112, a link pivot 2113 is arranged between the first waist-shaped hole 2111 and the second waist-shaped hole 2112, the transmission link 211 can rotate around the link pivot 2113, one end of the suspension rod 212 is connected with the rotation shaft 213, the other end of the suspension rod is provided with a connection shaft 2121, the connection shaft 2121 is rotatably connected in the first waist-shaped hole 2111, the transmission link 211 can drive the suspension rod 212 and the rotation shaft 213 to rotate when rotating, referring to fig. 4, the rotation shaft 213 is connected with the rocker arm assembly 113 to drive the rocker arm assembly 113 to rotate.

In order to drive the rotating shaft 213 to rotate, please refer back to fig. 3, the automatic transfer switch further includes a driving mechanism, the driving mechanism includes an electromagnetic driving mechanism 31 and a guiding mechanism 32, the electromagnetic driving mechanism 31 includes an electromagnetic driving component 311 and a transmission shaft 312, with reference to fig. 5, the transmission shaft 312 is rotatably connected in the second kidney-shaped hole 2112, the electromagnetic driving component 311 can drive the transmission shaft 312 to selectively move towards two preset directions, so that the transmission shaft 312 drives the first-way contact mechanism 11 to open and close or drives the second-way contact mechanism 12 to open and close; the guide mechanism 32 includes a guide member 321 and an electromagnetic guide driving member 322, and the electromagnetic guide driving member 322 can drive the guide member 321 to rotate, so that the guide member 321 guides the transmission shaft 312 to move in a preset direction.

Through setting up drive mechanism 2 into the mode of transmission link 211 and suspension rod 212 complex, can make and keep great distance between two moving contacts 112 to can reserve sufficient space for setting up of explosion chamber 13, and then can extinguish the electric arc that produces when the switch opens and shuts fast, improve automatic transfer switch's electric life. In addition, the electromagnetic driving component 311 is arranged to drive the transmission shaft 312 to move in a preset direction, so that the purpose of driving the first-path contact mechanism 11 to be switched on and switched off or driving the second-path contact mechanism 12 to be switched on and switched off is achieved, the electromagnetic guiding driving component 322 is arranged to drive the guide component 321 to rotate, so that the guide component 321 guides the transmission shaft 312 to move towards the preset direction, the switching speed of the switch can be ensured to be fast, the reliability of the driving action is high, and the switching-on and switching-off capacity of the automatic change-over switch is improved.

Further, as shown in fig. 3, the electromagnetic driving assembly 311 includes a driving electromagnet 3111, a push rod 3112, an L-shaped lever 3113 and a transmission crank arm 3114, one end of the push rod 3112 is connected to the driving end of the driving electromagnet 3111, one end of the L-shaped lever 3113 is rotatably connected to the push rod 3112, two ends of the transmission crank arm 3114 are rotatably connected to the other end of the L-shaped lever 3113 and the transmission shaft 312 respectively, the driving electromagnet 3111 can drive the push rod 3112 to drive the L-shaped lever 3113 to rotate, so that the transmission shaft 312 is driven to move along a preset direction through the transmission crank arm 3114.

When the driving electromagnet 3111 obtains a closing electric signal, the driving electromagnet 3111 drives the ejector 3112 to move in a direction close to the L-shaped lever 3113, a first action point F1 at one end of the L-shaped lever 3113 is stressed, a lever fulcrum Z1 at a corner of the L-shaped lever 3113 is taken as a fulcrum, and a second action point F2 at the other end of the L-shaped lever 3113 acts on the transmission crank arm 3114, so that the transmission crank arm 3114 is driven to move upwards.

Specifically, as shown in fig. 3, the driving electromagnet 3111 includes an electromagnetic coil and an iron core at the center of the electromagnetic coil, the iron core is connected to the push rod 3112, and the iron core can be pushed out toward the L-shaped lever 3113 by the electromagnetic coil, so as to drive the push rod 3112 to move forward to push the L-shaped lever 3113 to rotate. The driving electromagnet 3111 is a driving mechanism commonly used in the prior art, and the detailed structure and operation principle thereof are not described in detail herein.

Further, as shown in fig. 3, a mounting plate 4 is disposed between the transmission mechanism 2 and the driving mechanism, a V-shaped hole 41 is disposed on the mounting plate 4, the V-shaped hole 41 extends in two predetermined directions, the transmission shaft 312 moves in the V-shaped hole 41, and when the transmission shaft 312 moves from bottom to top, the guide member 321 blocks in one of the predetermined directions, so that the transmission shaft 312 moves in the other predetermined direction.

Specifically, as shown in fig. 3, a guide fulcrum 3211 is disposed in the middle of the guide 321, one end of the guide 321 leads to the transmission shaft 312, and the other end is connected to the driving end of the electromagnetic guide driving element 322, and the electromagnetic guide driving element 322 can drive the guide 321 to rotate around the guide fulcrum 3211, so that the guide 321 is switched between the left hole groove and the right hole groove of the V-shaped hole 41.

Optionally, as shown in fig. 3, the electromagnetic guiding driving element 322 includes a pressing plate 3221, a guiding electromagnetic element 3222 and an elastic element 3223, the pressing plate 3221 is rotatably connected to the other end of the guiding element 321, the guiding electromagnetic element 3222 is disposed opposite to the pressing plate 3221, the elastic element 3223 is connected between the pressing plate 3221 and the guiding electromagnetic element 3222, the guiding electromagnetic element 3222 is de-energized, the pressing plate 3221 is bounced away under the elastic force of the elastic element 3223, and the guiding electromagnetic element 3222 is energized to attract the pressing plate 3221 to press the elastic element 3223. The elastic member 3223 is preferably a compression spring.

When the electromagnetic driving mechanism 31 is operated and the guiding electromagnetic element 3222 is not energized, the pressing plate 3221 is in the open state by the elastic element 3223, the guiding element 321 keeps the guiding state of the I-path contact mechanism 11, and the transmission shaft 312 moves in the direction of the closing state of the I-path contact mechanism by the transmission crank arm 3114. On the contrary, when the guiding electromagnetic element 3222 is powered on, the pressing plate 3221 is in a closed state under the suction force of the guiding electromagnetic element 3222, during a closing operation, the pressing plate 3221 applies a force to one end of the guiding element 321 connected to the pressing plate 3221, so that the guiding element 321 rotates with the guiding fulcrum 3211 as a fulcrum, and turns to a closing guiding state of the path ii contact mechanism 12, and the transmission shaft 312 moves to the direction of the closing state of the path ii contact mechanism 12 under the action of the transmission crank arm 3114.

Further, as shown in fig. 4, the rocker arm assembly 113 includes a rocker arm 1131 and a movable contact link 1132, one end of the rocker arm 1131 is fixedly connected to the rotating shaft 213, two ends of the movable contact link 1132 are respectively rotatably connected to the other end of the rocker arm 1131 and the movable contact 112, one end of the movable contact 112 is rotatably disposed through a movable contact fulcrum 1121, the rotating shaft 213 can drive the rocker arm 1131 to rotate, so as to drive the movable contact 112 to rotate through the movable contact link 1132, and thus the movable contact 112 and the i-way stationary contact 111 are closed or disconnected.

Optionally, as shown in fig. 4, the path ii contact mechanism 12 includes a path ii fixed contact 121, and the path i fixed contact 111 is connected to the path ii fixed contact 121, and is configured as an integrated structure.

Further, as shown in fig. 9, the contact arc extinguishing mechanism 1 further includes an arc extinguishing chamber 13, a baffle 131 is disposed in the middle of the arc extinguishing chamber 13, the baffle 131 divides the arc extinguishing chamber 13 into two arc extinguishing chambers, and the first-path contact mechanism 11 and the second-path contact mechanism 12 are respectively disposed in the two arc extinguishing chambers.

Preferably, the baffle 131 extends in a curved shape, so that the air outlet b of the arc-extinguishing chamber is larger than the air inlet a of the arc-extinguishing chamber 13, and the arc can rapidly enter the arc-extinguishing chamber and rapidly move in the arc-extinguishing chamber to be extinguished under the action of the difference between the internal air pressure and the external air pressure of the arc-extinguishing chamber. Of course, the barrier plate 131 is not limited to a curved shape, and may be provided in a linear shape or other shapes in other embodiments.

The following description of the switching-on and switching-off processes is performed by taking the path i contact mechanism 11 as an example:

after the electromagnet 3111 is driven to obtain a closing signal, the electromagnetic coil drives the iron core to eject, so as to drive the ejector 3112 to move forward, and drive the L-shaped lever 3113 to rotate by taking the lever fulcrum Z1 as a fulcrum, so as to drive the transmission crank 3114 to move upward, in the process, the pressing plate 3221 of the guide mechanism 32 bounces upward, the guide member 321 is in a guiding state of the i-way contact mechanism 11, the transmission shaft 312 moves upward under the action of the transmission crank 3114, and the transmission shaft 312 passes through the second kidney-shaped hole 2112 of the transmission connecting rod 211, so that the transmission connecting rod 211 rotates by taking the connecting rod fulcrum 2113 as a fulcrum. In the rotating process, the first kidney-shaped hole 2111 of the transmission link 211 acts on the rotating shaft 213, so as to drive the rotating shaft 213 to rotate, the rotating shaft 213 drives the end of the rocker arm 1131 connected to the movable contact link 1132 to move downward, the movable contact 112 is pressed down by the movable contact link 1132, the movable contact 112 is made to contact with the first-path stationary contact 111, and the closing process of the first-path contact mechanism 11 shown in fig. 4 and 8 is implemented.

After the driving electromagnet 3111 obtains the switching-off signal, the mechanism releases the switching-on locking, and at this time, the spring inside the driving electromagnet 3111 releases energy to push the iron core to move in the direction away from the L-shaped lever 3113, and at the same time, the ejector 3112 is driven to move outwards, and the L-shaped lever 3113 is driven by the ejector 3112 to move the transmission crank arm 3114 downwards. The transmission shaft 312 on the transmission crank arm 3114 drives the transmission link 211 to rotate in the reverse direction of the closing direction, the rotating shaft 213 is driven by the first kidney-shaped hole 2111 on the transmission link 211 to rotate in the reverse direction of the closing direction, the rotating shaft 213 drives the end of the rocker arm 1131 connected to the movable contact link 1132 to move upward, the movable contact 112 is lifted up by the movable contact link 1132, the movable contact 112 is separated from the stationary contact 111 in the first path, and the opening process of the contact mechanism 11 in the first path is realized.

The switching process of the second-path contact mechanism 12 is the same as that of the first-path contact mechanism 11, when the second-path contact mechanism 12 is switched on and switched off, only the guide member 321 needs to be adjusted to enable the guide member 321 to point to the second-path contact mechanism 12, and the detailed working process of the second-path contact mechanism 12 is not repeated here.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An automatic transfer switch, comprising:

the contact arc extinguishing mechanism (1) comprises a first path of contact mechanism (11) and a second path of contact mechanism (12) which are identical in structure, wherein the first path of contact mechanism (11) comprises a first path of static contact (111), a moving contact (112) and a rocker arm component (113), the rocker arm component (113) is rotatably connected with the moving contact (112), and the moving contact (112) can be driven to rotate by the rotation of the rocker arm component (113);

the transmission mechanism (2) comprises an I-path transmission mechanism (21) and an II-path transmission mechanism (22) which are identical in structure, the I-path transmission mechanism (21) comprises a transmission connecting rod (211), a suspension rod (212) and a rotating shaft (213), a first waist-shaped hole (2111) and a second waist-shaped hole (2112) are respectively formed in two ends of the transmission connecting rod (211), a connecting rod fulcrum (2113) is arranged between the first waist-shaped hole (2111) and the second waist-shaped hole (2112), the transmission connecting rod (211) can rotate around the connecting rod fulcrum (2113), one end of the suspension rod (212) is connected with the rotating shaft (213), a connecting shaft (2121) is arranged at the other end of the suspension rod, the connecting shaft (2121) is rotatably connected in the first waist-shaped hole (2111), the transmission connecting rod (211) can drive the suspension rod (212) and the rotating shaft (213) to rotate, and the rotating shaft (213) is connected with the rocker arm component (113) to drive the rocker arm component (113) to rotate;

the driving mechanism comprises an electromagnetic driving mechanism (31) and a guiding mechanism (32), the electromagnetic driving mechanism (31) comprises an electromagnetic driving component (311) and a transmission shaft (312), the transmission shaft (312) is rotatably connected in the second kidney-shaped hole (2112), and the electromagnetic driving component (311) can drive the transmission shaft (312) to selectively move towards two preset directions, so that the transmission shaft (312) drives the first-way contact mechanism (11) to be opened and closed or drives the second-way contact mechanism (12) to be opened and closed; the guide mechanism (32) comprises a guide piece (321) and an electromagnetic guide driving piece (322), wherein the electromagnetic guide driving piece (322) can drive the guide piece (321) to rotate, so that the guide piece (321) guides the transmission shaft (312) to move towards the preset direction.

2. The automatic transfer switch of claim 1, wherein the electromagnetic drive assembly (311) comprises:

the device comprises a driving electromagnet (3111) and a push rod (3112), wherein one end of the push rod (3112) is connected to the driving end of the driving electromagnet (3111);

the L-shaped lever (3113), one end of the L-shaped lever (3113) is connected to the ejector rod (3112) in a rotating mode;

transmission turning arm (3114), the both ends of transmission turning arm (3114) rotate respectively connect in the other end of L type lever (3113) with transmission shaft (312), driving electromagnet (3111) can drive ejector pin (3112) drives L type lever (3113) rotates, in order to pass through transmission turning arm (3114) drive transmission shaft (312) are followed it removes to predetermine the direction.

3. The automatic transfer switch of claim 1, wherein a mounting plate (4) is disposed between the transmission mechanism (2) and the driving mechanism, a V-shaped hole (41) is disposed on the mounting plate (4), the V-shaped hole (41) extends in two predetermined directions, the transmission shaft (312) moves in the V-shaped hole (41), and when the transmission shaft (312) moves from bottom to top, the guide member (321) blocks one of the predetermined directions, so that the transmission shaft (312) moves to the other predetermined direction.

4. The automatic transfer switch of claim 3, wherein a guide fulcrum (3211) is disposed in the middle of the guide (321), one end of the guide (321) is guided to the transmission shaft (312), and the other end of the guide is connected to the driving end of the electromagnetic guiding driving element (322), and the electromagnetic guiding driving element (322) can drive the guide (321) to rotate around the guide fulcrum (3211).

5. The automatic transfer switch of claim 4, wherein the electromagnetic guided drive (322) comprises:

the pressing plate (3221) is rotatably connected with the other end of the guide piece (321);

the pressing plate comprises a guide electromagnetic part (3222) and an elastic part (3223), the guide electromagnetic part (3222) and the pressing plate (3221) are arranged oppositely, the elastic part (3223) is connected between the pressing plate (3221) and the guide electromagnetic part (3222), the guide electromagnetic part (3222) is out of power, the pressing plate (3221) is bounced off under the elastic force of the elastic part (3223), and the guide electromagnetic part (3222) electrically adsorbs the pressing plate (3221) to press the elastic part (3223).

6. The automatic transfer switch of claim 5, wherein the elastic member (3223) is a compression spring.

7. The automatic transfer switch of any of claims 1-6, wherein the rocker arm assembly (113) comprises:

one end of the rocker arm (1131) is fixedly connected with the rotating shaft (213);

the two ends of the moving contact connecting rod (1132) are respectively connected with the other end of the rocker arm (1131) and the moving contact (112) in a rotating mode, one end of the moving contact (112) is rotatably arranged through a moving contact fulcrum (1121), the rotating shaft (213) can drive the rocker arm (1131) to rotate, so that the moving contact (112) is driven to rotate through the moving contact connecting rod (1132), and the moving contact (112) and the I-way static contact (111) are closed or disconnected.

8. The automatic transfer switch of any one of claims 1 to 6, wherein the way II contact mechanism (12) comprises a way II stationary contact (121), and the way I stationary contact (111) and the way II stationary contact (121) are connected to form an integrated structure.

9. The automatic transfer switch according to any of claims 1-6, characterized in that the contact quenching mechanism (1) further comprises:

explosion chamber (13), be provided with in the middle of explosion chamber (13) and separate plate washer (131), it will to separate plate washer (131) explosion chamber (13) fall into two arc extinguishing chambers, I way contact mechanism (11) with II way contact mechanism (12) set up respectively in two in the arc extinguishing chamber.

10. The automatic transfer switch of claim 9, wherein the deflector (131) extends in a curve such that the outlet of the arc extinguishing chamber is larger than the inlet of the arc extinguishing chamber (13).