JP2021111608A - Aerial switch automatically switching off - Google Patents

Abstract

To provide an aerial switch that automatically switches off.SOLUTION: An aerial switch that automatically switches off includes a switch body, an electric circuit space is installed inside the switch body, an electric circuit blocking mechanism that can cut off the electric circuit in the air is installed in the electric circuit space, and a first rotation groove opened downward is formed on the upper wall of the electric circuit space, and the present invention improves existing aerial switches. The electric circuit blocking mechanism can protect the electric circuit when an abnormality such as a short circuit or insufficient voltage occurs, The upper hook mechanism can keep the aerial switch off all the time when an abnormality occurs, a left hook mechanism can keep the aerial switch in a normal operating state under a normal condition, a turning mechanism can turn off the switch automatically when the electric path returns to normal, and there is no need of manual switch-off, it is more convenient and efficient, and the hassle of unexpectedly tripping of a breaker can be avoided.SELECTED DRAWING: Figure 1

Description

The present invention relates to the technical field of electric switches, and specifically, is an aerial switch in which a switch is automatically turned off.

An aerial switch, also called an aerial switch, is a type of circuit breaker. An aerial switch is a switch that automatically turns off when the current in the electric circuit exceeds the rated current. Air switches are very important appliances in low voltage distribution networks and electric drive systems, and have control functions and various protection functions. Air switches can contact or disrupt electrical circuits, can protect against short circuits, overloads and undervoltages of electrical circuits or electrical equipment, and are used when motors are not used frequently. You can also do it.
At this stage, it often happens that the breaker trips unexpectedly, and a normal aerial switch cannot be turned off automatically after the switch is turned off and before the electric circuit returns to normal, and it cannot be turned off manually. Turning off the switch is very inconvenient and consumes time and effort.

Chinese Patent Application Publication No. 1046000573

In response to the above technical deficiencies, the present invention provides an aerial switch that is automatically switched off.

The aerial switch in which the switch described in the present invention is automatically turned off includes the switch main body, an electric circuit space is installed inside the switch main body, and the electric circuit cutoff is in the air in the electric circuit space. A first turning groove opened downward is formed on the upper wall of the electric circuit space, and a second turning groove opened to the left is formed on the right end wall of the first turning groove. A first slide groove opened downward is formed on the upper wall of the first turning groove, and a second slide groove opened forward is formed on the rear end wall of the electric circuit space. A first slider slidably connected to the second slide groove is installed in the inside, and the bottom wall of the first slider and the second slide groove are connected by a first spring to form the first slider. The front end wall and the rear end wall of the lever located in the electric circuit space are fixedly connected, and a third slide groove opened rearward is formed in the front end wall of the electric circuit space. A second slider slidably connected to the third slide groove is installed inside, the upper wall of the second slider and the third slide groove are connected by a second spring, and after the second slider. The lever is fixedly connected to the end wall, a rack slidably connected to the third slide groove is fixedly installed at the front end of the second slider, and the rack is located on the right side of the rack. It meshes with the gear, the gear shaft is fixedly connected to the gear, the gear shaft and the switch main body are rotatably connected, and the switch main body is located on the front side of the third slide groove. A third turning groove is formed, an upper hook mechanism is installed on the upper side of the third turning groove, a turning mechanism is installed in the third turning groove, and a turning mechanism is installed on the left side of the third turning groove. A left hook mechanism is installed.

Preferably, the electric circuit cutoff mechanism includes a first rotation shaft fixedly installed between the front and rear end walls of the second rotation groove, and the first rotation shaft and the third rotation groove are connected by a torsion spring. The first rotating shaft and the hook are rotatably connected to each other, the lever is installed on the lower side of the hook, and the upper tapping block is fixedly installed on the left end wall of the lever, and the upper tapping block is fixedly installed. An electromagnetic trip device fixedly connected to the rear end wall of the electric circuit space is installed on the left side of the block, and a lower tapping block located below the upper tapping block is fixed on the right end wall of the lever. On the right side of the bottom tapping block, an undervoltage trip device fixedly connected to the right end wall of the electric circuit space is installed, and an armature of the electromagnetic trip device and the undervoltage trip device is installed. It is connected to the tripping device by a tension spring, a bimetal is installed under the lever, the left end wall of the bimetal and the right end wall of the support block are fixedly connected, and after the support block and the electric circuit space. The end wall is fixedly connected, a heating element is installed under the bimetal, a right hook is fixedly installed on the left end wall of the hook, and a left hook is installed on the lower end of the right hook. A hook is installed, the left end wall of the left hook is fixedly connected to the lock, the lock and the main contact head are fixedly connected, and the main contact head and the left end wall of the electric circuit space are connected to each other. It is connected by three springs, and an electric circuit box is installed on the upper and lower end walls of the electric circuit space.

Preferably, the upper hook mechanism includes a fourth slide groove formed on the upper wall of the third turning groove and opened downward, and a stop block is symmetrical on the bottom wall of the fourth slide groove. A third slider that is slidably connected to the fourth slide groove is installed in the fourth slide groove, and a first diagonal block is installed on the bottom wall of the third slider. Is fixedly connected, the upper wall of the third slide and the fourth slide groove are connected by a fourth spring, and the lower airbag is fixedly connected to the upper wall of the third slider, and the fourth A gas pipe is installed on the upper wall of the slide groove, the upper end of the gas pipe and the upper airbag are fixedly connected, and the upper airbag is located in the fifth slide groove of the upper airbag. A fourth slider is fixedly connected to the rear end, a fifth slider is fixedly installed on the upper wall of the fourth slider, the fifth slider is located in the first slide groove, and further. It is slidably connected to the first slide groove, an upper hook is fixedly connected to the bottom wall of the rear end of the fifth slider, and the rear end wall of the fifth slider and the electric circuit space are connected to the fifth spring. Are connected by.

Preferably, the flipping mechanism includes a first connecting hinge that is fixedly connected to the front end of the gear shaft, the first connecting hinge and the first conrod are rotatably connected to the other of the first conrod. The end and the second connecting hinge are fixedly connected, the second connecting hinge and the rear end of the first connecting rod are rotatably connected, and the front end of the first connecting rod and the third connecting hinge are connected. Is rotatably connected, the third connecting hinge and the second conrod are fixedly connected, the other end of the second conrod and the second connecting block are fixedly connected, and the second connecting block A third connecting block is fixedly installed on the bottom wall, a second diagonal block is fixedly installed on the bottom wall of the third connecting block, and a second connecting rod shape is fixedly installed on the front end wall of the second connecting block. The bodies are rotatably connected, the front end of the second connecting rod and the third connecting hinge are rotatably connected, the third connecting hinge and the third conrod are fixedly connected, and the third conrod is fixedly connected. The other end and the fourth connecting hinge are fixedly connected, the fourth connecting hinge and the rear end of the third connecting rod are rotatably connected, and the front end of the third connecting rod and the switch It is rotatably connected to the main body.

Preferably, the left hook mechanism includes a sixth slide groove formed on the left end wall of the third turning groove and opened to the right, and the sixth slide groove and the slide are included in the sixth slide groove. A possibly connected third diagonal block is installed, the third diagonal block and the left end wall of the sixth slide groove are connected by a sixth spring, and a sixth slider is attached to the rear end wall of the third diagonal block. Is fixedly connected, the seventh slider is fixedly connected to the rear end wall of the sixth slider, the eighth slider is fixedly connected to the upper end wall of the seventh slider, and the eighth slider is fixedly connected. The lock is fixedly connected to the rear end wall.

Preferably, each circuit element is connected to form an electric circuit.

Preferably, the armature is attracted in a situation where the electromagnetic trip device is short-circuited, and the armature hits the lever to move it upward, and the armature keeps the lever moving upward. After the electric circuit returns to normal, the armature is released and the lever is moved downward to return.

Preferably, when the undervoltage trip device becomes undervoltage, the armature is released, and the armature hits the lever to move it upward, and the armature moves it upward to the lever. After the electric circuit returns to normal, the armature is attracted and the lever is moved downward to return.

The present invention has improved the existing aerial switch. The electric circuit breaker mechanism can protect the electric circuit when an abnormality such as a short circuit or insufficient voltage occurs, and the upper hook mechanism can keep the aerial switch off for a long time when an abnormality occurs. The left hook mechanism can keep the aerial switch in a normal operating state under normal conditions, and the flipping mechanism can automatically turn off the switch when the circuit returns to normal, manually switching. There is no need to turn off, it is more convenient and efficient, and you can avoid the hassle of unexpectedly tripping the breaker.

In order to explain the present invention in detail with reference to FIGS. 1 to 4 below and to explain the present invention in a convenient manner, the following directions are defined as follows: FIG. 1 is a front view of the apparatus of the present invention and is described in the present application. Each direction is the direction when the device is viewed in the same direction as in FIG.

FIG. 1 is a schematic diagram of the overall configuration of the present invention. FIG. 2 is a schematic view of “AA” of FIG. FIG. 3 is a schematic view of “BB” of FIG. FIG. 4 is a schematic view of “CC” of FIG.

The aerial switch that automatically turns off the switch according to the present invention includes the switch main body 1, an electric circuit space 16 is installed inside the switch main body 1, and an electric circuit is provided in the electric circuit space 16. An electric circuit blocking mechanism that can cut off the circuit in the air is installed, a first turning groove 2 opened downward is formed on the upper wall of the electric circuit space 16, and a first turning groove 2 is opened to the left on the right end wall of the first turning groove 2. A second rotating groove 4 is formed, a first slide groove 3 opened downward is formed on the upper wall of the first turning groove 2, and a second sliding groove 3 opened forward is formed on the rear end wall of the electric circuit space 16. A slide groove 54 is formed, and a first slider 53 slidably connected to the second slide groove 54 is installed in the second slide groove 54, and the bottom wall of the first slider 53 and the second slide groove 54 are installed. The slide groove 54 is connected by the first spring 52, the front end wall of the first slider 53 and the rear end wall of the lever 8 located in the electric circuit space 16 are fixedly connected, and the electric circuit space 16 is connected. A third slide groove 51 that opens rearward is formed on the front end wall, and a second slider 50 that is slidably connected to the third slide groove 51 is installed in the third slide groove 51. The upper wall of the two sliders 50 and the third slide groove 51 are connected by a second spring 69, the lever 8 is fixedly connected to the rear end wall of the second slider 50, and the front end of the second slider 50 is fixedly connected. A rack 49 slidably connected to the third slide groove 51 is fixedly installed in the rack 49, the rack 49 meshes with a gear 48 located on the right side of the rack 49, and a gear shaft 47 is fixed to the gear 48. The gear shaft 47 and the switch body 1 are rotatably connected, and a third turning groove 41 located on the front side of the third slide groove 51 is formed in the switch body 1. An upper hook mechanism is installed on the upper side of the third turning groove 41, a turning mechanism is installed in the third turning groove 41, and a left hook hook is installed on the left side of the third turning groove 41. The mechanism is installed.

As a benefit, the electrical circuit cutoff mechanism includes a first rotating shaft 6 fixedly installed between the front and rear end walls of the second turning groove 4, the first rotating shaft 6 and the third turning groove 41. The first rotating shaft 6 and the hook 5 are rotatably connected to each other by a torsion spring 70, the lever 8 is installed under the hook 5, and the lever 8 is rotatably connected to the left end wall of the lever 8. The tapping block 7 is fixedly installed, and an electromagnetic trip device 19 fixedly connected to the rear end wall of the electric circuit space 16 is installed on the left side of the upper tapping block 7 and is installed on the right end wall of the lever 8. Is fixedly installed with a lower tapping block 9 located below the upper tapping block 7, and an undervoltage relay fixedly connected to the right end wall of the electric circuit space 16 on the right side of the lower tapping block 9. A device 12 is installed, the electromagnetic trip device 19 and the armature 17 of the undervoltage trip device 12 are connected to the trip device by a tension spring 18, and a bimetal 13 is installed under the lever 8. The left end wall of the bimetal 13 and the right end wall of the support block 15 are fixedly connected, and the support block 15 and the rear end wall of the electric circuit space 16 are fixedly connected to the lower side of the bimetal 13. The heating element 14 is installed, the right hook hook 25 is fixedly installed on the left end wall of the hook 5, the left hook hook 26 is installed at the lower end of the right hook hook 25, and the left end of the left hook hook 26 is installed. The wall and the lock 20 are fixedly connected, the lock 20 and the main contact head 22 are fixedly connected, and the main contact head 22 and the left end wall of the electric circuit space 16 are connected by a third spring 21. An electric circuit box 23 is installed on the upper and lower end walls of the electric path space 16.

Beneficially, the upper hook mechanism includes a fourth slide groove 38 formed on the upper wall of the third turning groove 41 and open downward, and a stop block on the bottom wall of the fourth slide groove 38. 57 is installed so as to be symmetrical and fixed, and a third slider 39 slidably connected to the fourth slide groove 38 is installed in the fourth slide groove 38, and the third slide groove 38 is installed. The first oblique block 40 is fixedly connected to the bottom wall of the slider 39, the upper wall of the third slide 49 and the fourth slide groove 38 are connected by the fourth spring 56, and the upper wall of the third slider 49 is connected. The lower airbag 37 is fixedly connected to the wall, a gas pipe 36 is installed on the upper wall of the fourth slide groove 38, and the upper end of the gas pipe 36 and the upper airbag 34 are fixedly connected. The upper airbag 34 is located in the fifth slide groove 35, the fourth slider 33 is fixedly connected to the rear end of the upper airbag 34, and the fifth slider 33 is connected to the upper wall of the fourth slider 33. The slider 32 is fixedly installed, the fifth slider 32 is located in the first slide groove 3, and is slidably connected to the first slide groove 3, and the rear end bottom of the fifth slider 32. An upper hook 55 is fixedly connected to the wall, and the rear end wall of the fifth slider 32 and the electric circuit space 16 are connected by a fifth spring 31.

Beneficially, the flipping mechanism includes a first connecting hinge 46 that is fixedly connected to the front end of the gear shaft 47, the first connecting hinge 46 and the first conrod 60 being rotatably connected. The other end of the first conrod 60 and the second connecting hinge 43 are fixedly connected, and the second connecting hinge 43 and the rear end of the first connecting rod-shaped body 58 are rotatably connected, and the first connecting is performed. The front end of the rod-shaped body 58 and the third connecting hinge 42 are rotatably connected, the third connecting hinge 42 and the second conrod 68 are fixedly connected, and the other end of the second conrod 68 is secondly connected. The block 67 is fixedly connected, the third connecting block 66 is fixedly installed on the bottom wall of the second connecting block 67, and the second diagonal block 63 is fixedly connected to the bottom wall of the third connecting block 66. It is fixedly installed, the second connecting rod-shaped body 59 is rotatably connected to the front end wall of the second connecting rod-shaped block 67, and the front end of the second connecting rod-shaped body 59 and the third connecting hinge 44 are rotatably connected. The third connecting hinge 44 and the third conrod 61 are fixedly connected, the other end of the third conrod 61 and the fourth connecting hinge 45 are fixedly connected, and the fourth connecting hinge 45 is connected. And the rear end of the third connecting rod 62 are rotatably connected, and the front end of the third connecting rod 62 and the switch body 1 are rotatably connected.

Beneficially, the left hook mechanism includes a sixth slide groove 65 formed on the left end wall of the third turning groove 41 and opening to the right, and the sixth slide groove 65 includes the third slide groove 65. A third diagonal block 30 that is slidably connected to the six slide groove 65 is installed, and the third diagonal block 30 and the left end wall of the sixth slide groove 65 are connected by a sixth spring 64, and the third diagonal block 30 is connected. The sixth slider 29 is fixedly connected to the rear end wall of the block 30, and the seventh slider 28 is fixedly connected to the rear end wall of the sixth slider 29, and is fixedly connected to the upper end wall of the seventh slider 28. The eighth slider 27 is fixedly connected to the rear end wall of the eighth slider 27, and the lock 20 is fixedly connected to the rear end wall of the eighth slider 27.

Beneficially, each circuit element is connected to form an electric circuit.

Beneficially, the armature 17 is attracted in a situation where the electromagnetic trip device 19 is short-circuited, and the armature 17 hits the lever 8 to move it upward, and the armature 17 causes the armature 17 to move upward. The armature 17 is released and the lever 8 is moved downward to return the armature 17 after the electric circuit is returned to the normal state by maintaining the movement upward.

Beneficially, the undervoltage trip device 12 releases the armature 17 when the undervoltage is reached, and the armature 17 hits the lever 8 to move it upwards, further causing the armature 17 to move upward. The lever 8 is maintained to move upward, and after the electric circuit returns to normal, the armature 17 is attracted to move the lever 8 downward to return.

In the initial state, the first spring 52, the second spring 69, the torsion spring 70, the upper tension spring 18, the third spring 21, the fourth spring 56, and the fifth spring 31 are all normal. The sixth spring 64 and the third spring 21 are in a compressed state, and the lower tension spring 18 is in a pulled state.
The order of mechanical operation of the entire invention of the present application is as follows.
When a normal overload problem occurs in the electric circuit line, the overload current cannot operate the electromagnetic trip device 19, but can cause the heating element 14 to generate heat, thus the bimetal 13 is of heat. When affected, the lever 8 moves upward, the right hook 25 disengages from the left hook 26, the main contact head 22 is shut off, the power is turned off, and the overload disappears, the heating element 14 does not generate heat, the bimetal 13 cools and returns downwards, and the lever 8 moves downwards on a return action, hooking the right hook 25 and the left hook 26 to each other, and further the main contact head 22. Is energized, powered on,
When the line is short-circuited, or when a serious overload current problem occurs, the short-circuit, the current exceeds the instantaneous trip current set value, and the electromagnetic trip device 19 produces a sufficiently large attractive force to the armature. The child 17 attracts and hits the lever 8, and the hook 5 rotates upward, the hook 25 and the left hook 26 are released from being caught, the power is turned off, and the undervoltage is removed when the voltage is insufficient. The device 12 produces a sufficiently large suction force, and the armature 17 attracts and taps the lever 8 to rotate the hook 5 upwards, disengage the hook 25 from the right hook and the hook 26 from the left.
In the event of a short circuit or undervoltage, the lever 8 and the second slider 50 will move upwards, and the gear 48 will rotate, the gear shaft 48 will rotate, the first connecting hinge 46 will rotate, and the first conrod 60 will rotate. When the turning mechanism is activated and the lever 8 is at the highest point, the first conrod 60 rotates 90 degrees, but the second conrod 68, the second connecting block 67, the third connecting block 66 and the second diagonal block 63 can be guaranteed to rotate 180 degrees, the second diagonal block 63 and the first diagonal block 40 are slidably connected, the first diagonal block 40 and the third slider 39 move upwards, and the gas. Enters the upper airbag 34 from the lower airbag 37, the fourth slider 33 moves backward, and the upper hook 55 is hooked on each other with the right hook hook 25 which is rotated upward to the highest point at this time. In the process of a short circuit or undervoltage problem, let the aerial switch keep the breaker down.
When the switch is turned off, after the short circuit or undervoltage problem has been resolved, the lever 8 and the second slider 50 move downwards to return, and the gear 48 reverses, the gear shaft 48 reverses, and so on. When the one-connecting hinge 46 reverses, the first connecting rod 60 reverses, the turning mechanism operates, and the lever 8 returns, the first connecting rod 60 rotates 90 degrees, and the second connecting rod 68, the second connecting block. 67, the third connecting block 66 and the second diagonal block 63 are reversed 180 degrees, the second diagonal block 63 is slidably connected to the third diagonal block 30, and the first diagonal block 40 and the third slider 30 are connected. The return action moves downwards, the gas enters the lower airbag 37 from the upper air bag 34, and the fourth slider 33 moves forward, and the upper hook 55 is then reversed upward to the highest point on the right. The hook 5 is released from the hook 25, the hook 5 is reversed by the return action, and the second diagonal block 63 and the third diagonal block 30 are slidably connected, so that the third diagonal block 30 and the sixth slider are slidably connected. 29, the 7th slider 28, the 8th slider 27 and the lock 20 move backward, and the left hook hook 26 is hooked with the right hook hook 25 which is reversed downward to the lowest point at this time, and is powered on. The invention completes the brake release.

The above-mentioned examples merely explain the technical concept and features of the present invention, and the purpose thereof is to allow a person skilled in the art to understand the contents of the present invention and further implement the invention, and the scope of protection of the present invention cannot be limited. .. All equivalent changes or modifications made on the basis of the spiritual substance of the invention should be included within the scope of the invention.

Claims (8)

An electric circuit space is installed inside the switch body including the switch main body, an electric circuit cutoff mechanism that can cut off the electric circuit in the air is installed in the electric circuit space, and a lower part is installed on the upper wall of the electric circuit space. A first turning groove opened in is formed, a second turning groove opened to the left is formed on the right end wall of the first turning groove, and a first turning groove opened downward on the upper wall of the first turning groove. A slide groove is formed, a second slide groove opened forward is formed in the rear end wall of the electric circuit space, and the first slide groove is slidably connected to the second slide groove in the second slide groove. A slider is installed, the bottom wall of the first slider and the second slide groove are connected by a first spring, and the front end wall of the first slider and the rear end wall of the lever located in the electric circuit space are connected to each other. A third slide groove that is fixedly connected and opens rearward is formed on the front end wall of the electric circuit space, and a second slider that is slidably connected to the third slide groove is formed in the third slide groove. Is installed, the upper wall of the second slider and the third slide groove are connected by a second spring, the lever is fixedly connected to the rear end wall of the second slider, and the front end of the second slider is fixedly connected. A rack slidably connected to the third slide groove is fixedly installed in the rack, the rack meshes with a gear located on the right side of the rack, and a gear shaft is fixedly connected to the gear. The shaft and the switch main body are rotatably connected, and a third turning groove located on the front side of the third slide groove is formed in the switch main body, and an upper portion is formed on the upper side of the third turning groove. A switch is automatically provided, characterized in that a hook mechanism is installed, a turning mechanism is installed in the third turning groove, and a left hook mechanism is installed on the left side of the third turning groove. An aerial switch that can be cut into. The electric circuit cutoff mechanism includes a first rotation shaft fixedly installed between the front and rear end walls of the second rotation groove, and the first rotation shaft and the third rotation groove are connected by a torsion spring. The first rotating shaft and the hook are rotatably connected, the lever is installed under the hook, the upper tapping block is fixedly installed on the left end wall of the lever, and the left side of the upper tapping block. An electromagnetic trip device fixedly connected to the rear end wall of the electric circuit space is installed in the lever, and a lower tapping block located below the upper tapping block is fixedly installed on the right end wall of the lever. On the right side of the lower tapping block, an undervoltage trip device fixedly connected to the right end wall of the electric circuit space is installed, and the armature of the electromagnetic trip device and the undervoltage trip device is a trip device. A bimetal is installed under the lever, the left end wall of the bimetal and the right end wall of the support block are fixedly connected, and the support block and the rear end wall of the electric circuit space are connected to each other. Are fixedly connected, a heating element is installed under the bimetal, a right hook is fixedly installed on the left end wall of the hook, and a left hook is installed at the lower end of the right hook. The left end wall of the left hook and the lock are fixedly connected, the lock and the main contact head are fixedly connected, and the main contact head and the left end wall of the electric circuit space are connected by a third spring. The aerial switch according to claim 1, wherein the electric circuit box is installed on the upper and lower end walls of the electric circuit space, and the switch is automatically turned off. The upper hook mechanism includes a fourth slide groove formed on the upper wall of the third turning groove and opened downward, and the stop block is symmetrical on the bottom wall of the fourth slide groove. A third slider that is fixedly installed and slidably connected to the fourth slide groove is installed in the fourth slide groove, and the first diagonal block is fixed to the bottom wall of the third slider. The upper wall of the third slide and the fourth slide groove are connected by a fourth spring, and the lower airbag is fixedly connected to the upper wall of the third slider to form the fourth slide groove. A gas pipe is installed on the upper wall, the upper end of the gas pipe and the upper airbag are fixedly connected, and the upper airbag is located in the fifth slide groove and at the rear end of the upper airbag. The fourth slider is fixedly connected, the fifth slider is fixedly installed on the upper wall of the fourth slider, the fifth slider is located in the first slide groove, and the first It is slidably connected to the slide groove, the upper hook is fixedly connected to the rear end bottom wall of the fifth slider, and the rear end wall of the fifth slider and the electric circuit space are connected by the fifth spring. The aerial switch according to claim 1, wherein the switch is automatically turned off. The flipping mechanism includes a first connecting hinge that is fixedly connected to the front end of the gear shaft, the first connecting hinge and the first conrod are rotatably connected, and the other end of the first conrod and the first The two connecting hinges are fixedly connected, the second connecting hinge and the rear end of the first connecting rod are rotatably connected, and the front end of the first connecting rod and the third connecting hinge are rotatable. The third connecting hinge and the second conrod are fixedly connected to each other, the other end of the second conrod and the second connecting block are fixedly connected to the bottom wall of the second connecting block. The third connecting block is fixedly installed, the second diagonal block is fixedly installed on the bottom wall of the third connecting block, and the second connecting rod-shaped body rotates on the front end wall of the second connecting block. The front end of the second connecting rod and the third connecting hinge are rotatably connected, the third connecting hinge and the third conrod are fixedly connected, and the other end of the third conrod is rotatably connected. And the fourth connecting hinge are fixedly connected, the fourth connecting hinge and the rear end of the third connecting rod are rotatably connected, and the front end of the third connecting rod and the switch body are connected to each other. The aerial switch according to claim 1, wherein the switch is automatically turned off, which is rotatably connected. The left hook mechanism includes a sixth slide groove formed on the left end wall of the third turning groove and opened to the right, and the sixth slide groove is slidably connected to the sixth slide groove. The third diagonal block is installed, the third diagonal block and the left end wall of the sixth slide groove are connected by a sixth spring, and the sixth slider is fixed to the rear end wall of the third diagonal block. The seventh slider is fixedly connected to the rear end wall of the sixth slider, the eighth slider is fixedly connected to the upper end wall of the seventh slider, and the rear end of the eighth slider is fixedly connected to. The aerial switch according to claim 1, wherein the lock is fixedly connected to the wall. The air switch according to claim 2, wherein each circuit element is connected to form an electric circuit, and the switch is automatically turned off. The armature is attracted in a situation where the electromagnetic trip device is short-circuited, and the armature hits the lever to move it upward, and the armature keeps the lever moving upward, so that the electric path is opened. The aerial switch according to claim 2, wherein after returning to normal, the armature is released to move the lever downward to return the armature. When the undervoltage trip device becomes an undervoltage, the armature is released, and the armature hits the lever to move it upward, and the armature further moves the armature upward to the lever. The aerial switch according to claim 2, wherein the armature is attracted and the lever is moved downward to return the armature after the armature is maintained and the electric circuit returns to the normal state. ..

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