JP2007172849A - High-voltage switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-voltage switching device with low cost, small size, and high performance. <P>SOLUTION: The high-voltage switching device uses a blade contact for a movable electrode and turns on and off an electric path by contacting with and separating from a fixed electrode by rotation of the movable electrode. The movable electrode of which one end is made a movable contact to contact with and separate from the fixed electrode and the end part which is not the movable contact is made an input part, and an output lever transmitting a force from the operating mechanism to the movable electrode and moves the movable electrode are connected by a pin, and the input part in which the movable electrode is connected to the output lever by the pin is formed in a groove shape so that the pin may be able to sliding move. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to an improvement of a high-voltage switch that uses a blade-shaped contact as a movable electrode and turns on and off an electric circuit by contact with and away from a fixed electrode by rotating the movable electrode. The present invention relates to a high-voltage switch that aims to improve and reduce material costs and assembly man-hours by downsizing and reducing the number of parts.

The high-voltage switch is required to have a withstand voltage performance, current interruption performance, short-circuit current application performance, and short-time withstand performance described in Japanese Industrial Standard C4605. It is known that it is greatly related to the size of the gap, the magnitude of the opening / closing driving force, and the speed of the cutoff speed. These relationships will be specifically described below.

The high-voltage switch requires a certain distance or more between the movable electrode and the fixed electrode in order to ensure the withstand voltage performance between the movable electrode and the fixed electrode in the cut-off state, and the greater the distance, the higher the withstand voltage capability.

The high-voltage switch requires a certain distance between the movable electrode and the fixed electrode in order to cut off the current by moving the movable electrode away from the fixed electrode, and the larger the gap, the higher the current blocking ability. Further, the shorter the time for extending the interval, that is, the faster the interruption speed, the higher the current interruption capability.

In a high-voltage switch that uses a blade-shaped contact for the movable electrode and turns the electric circuit on and off by moving the movable electrode to and from the fixed electrode, the operating load of the movable electrode is the movable electrode and the fixed electrode in the vicinity of the entry position. The contact friction load is the largest. For this reason, the high-pressure switch is required to have a large driving force in both open and closed directions in the vicinity of the entry position.

In a high-voltage switch that uses a blade-shaped contact for the movable electrode and turns the electric circuit on and off by moving the movable electrode to and from the fixed electrode, the operating load of the movable electrode is movable during and around the turning position. Only the contact friction load at the center of rotation of the electrode is small compared to the vicinity of the entry position. For this reason, in the high-voltage switch, the rotation speed of the movable electrode in the middle of opening, that is, the breaking speed is increased, and the current breaking ability is increased. Therefore, it is convenient that the operating load during the opening of the circuit is small.

However, since the operating load is small, the inertia in the open direction of the movable electrode at the cut-off position at the time of interruption is very large, and it is usual to provide a stopper so that the movable electrode does not rotate greatly beyond the predetermined cut position. It is. However, when a stopper is provided, when the driving force in the open direction of the movable electrode in the vicinity of the cut position is small, the movable electrode bounces in the closed direction and the distance between the movable electrode and the fixed electrode is reduced, and the current interruption performance or Adversely affects the withstand voltage performance between the movable electrode and the fixed electrode. For this reason, the high-voltage switch is required to have a large driving force in the opening direction in the vicinity of the cut position.

In a high-voltage switch that uses a blade-shaped contact for the movable electrode and turns the electric circuit on and off by moving the movable electrode to and from the fixed electrode, when the short-circuit current flows, the movable electrode is switched from the on state to the off state. A repulsive force is generated to open it. This repulsive force hinders the closing operation and the holding position. For this reason, the high-voltage switch is required to have a large driving force in the closing direction in the vicinity of the entry position.

As described above, in order to achieve the required performance, it is necessary to ensure the distance between the movable electrode and the fixed electrode of the high-voltage switch and the driving force at the on and off positions.

Hereinafter, an example of a conventional high-voltage switch that uses a blade-shaped contact as a movable electrode and turns on and off an electric circuit by contact with and separation from a fixed electrode by rotating the movable electrode will be described with reference to FIG. 6A and 6B are cross-sectional views of a conventional high voltage switch, in which FIG. 6A shows the vicinity of the entry position, FIG. 6B shows the circuit opening, and FIG. 6C shows the vicinity of the cut position. Holes for penetrating the conductors are respectively provided on the opposite side surfaces 601a and 601b of the case 601 serving as a casing of the high voltage switch, and a bushing 602 and a bushing 603 made of resin or insulator are inserted through the holes for penetrating the conductor. The fixed electrode 604 is provided on the bushing 602, and the hinge electrode 606 is provided on the bushing 603. By electrically connecting and disconnecting the fixed electrode 604 and the hinge electrode 606, the high-voltage switch turns on and off the electric circuit.

The hinge electrode 606 is provided with a shaft 609 as a fulcrum so that the movable electrode 605 can be rotated, and the hinge electrode 606 and the movable electrode 605 are press-contacted so that the hinge electrode 606 and the movable electrode 605 are electrically connected. A contact spring 610 is provided. The fixed electrode 604 is provided with a fixed contact 607 so as to be a pair of a plurality of pieces sandwiching the fixed electrode 604, and the fixed contact 607 is positioned so as to sandwich the contact portion 605a of the movable electrode 605 when the high-voltage switch is turned on. A contact spring 615 that biases the fixed contact 607 inward is provided so that the fixed electrode 604, the fixed contact 607, and the movable electrode 605 are electrically connected.

The output lever 612 that transmits the driving force from the operation mechanism 20 and the above-described movable electrode 605 are connected using the link 608 and the pins 613a and 613b so as to be rotatable. By this connection, the link 608 moves according to the rotation angle of the output lever 612, and the movable electrode 605 rotates according to the movement amount of the link 608, so that the movable electrode 605 is a fixed contact provided on the fixed electrode 604. The high voltage switch opens and closes the electric circuit.
JP 2000-228134 A

In the conventional high-voltage switch, as a method of increasing the distance between the movable electrode and the fixed electrode at the cut position in order to achieve performance and improve reliability, the rotation angle of the movable electrode is increased and the movable electrode is It has been made longer. Further, in order to increase the driving force acting on the movable electrode in the vicinity of the entry position and in the vicinity of the cutting position, the operation mechanism has been enlarged to increase the driving force.

However, the market demand for high-voltage switches is not only high performance and high reliability, but also strong miniaturization and cost reduction.

Here, in reducing the size of the high-voltage switch, the conventional high-voltage switch not only has the problem of increasing the size of the movable electrode in order to increase the distance between the movable electrode and the fixed electrode. If the length is increased, the distance between the center of rotation of the movable electrode and the fixed electrode becomes longer, which increases the rotational torque of the movable electrode caused by the contact friction load with the fixed electrode at the entrance position, which increases the size of the operating mechanism. There was a problem.

In addition, when the rotation angle of the movable electrode is increased in order to increase the distance between the movable electrode and the fixed electrode, there is a problem that the angle α formed by the movable electrode and the link is decreased and the driving force transmission efficiency is lowered. .

Here, the reason why the driving force transmission efficiency is lowered will be described with reference to FIG. (A) shows the vicinity of the entry position, (b) shows the middle of the open circuit, and (c) shows the vicinity of the cut position. This is because the sin α component of the driving force for moving the movable electrode 605 by the link 608 corresponds to the force for rotating the movable electrode 605. That is, if the driving force output from the output lever 612 is F, when the driving force F is transmitted to the movable electrode 605 via the link 608, the driving force F is decomposed by the angle α formed by the movable electrode 605 and the link 608. To do. Assuming that the force for rotating the movable electrode 605 is W, W becomes W = Fsinα, and when α = 30 degrees, W = 0.5F. Similarly, when α = 45 degrees, W = about 0.7F, and when 60 degrees, W = about 0.87F. Therefore, there arises a problem that the operating mechanism is enlarged in order to prevent the opening / closing performance from being lowered due to the reduction in driving force transmission efficiency.

As described above, in order to reduce the size of the conventional high-voltage switch, a problem arises that a large driving force is required to achieve the required performance and the operating mechanism is enlarged, which is contrary to the size reduction. Therefore, it has been difficult to realize downsizing.

The present invention solves the above-described problem. The driving force transmission distribution necessary for rotating the movable electrode is appropriately distributed so that the driving force is increased when the driving force is large, and the rotation angle of the movable electrode is set. By increasing the distance between the movable electrode and the fixed electrode at the cutting position, the performance and reliability are improved, and the number of components is reduced to reduce the size and material cost. The purpose is to provide a vessel.

The means of the present invention taken to achieve the above object are as follows. In the first invention, in the high-voltage switch that uses a blade-shaped contact for the movable electrode and turns on / off the electric circuit by moving the movable electrode to and from the fixed electrode, one end is connected to and separated from the fixed electrode. The movable electrode with the end that is not the movable contact as the input part and the output lever that transmits the force from the operating mechanism to the movable electrode and moves the movable electrode are connected with a pin, and the movable electrode is output with the pin The high-voltage switch is characterized in that the input portion connected to the lever has a groove shape so that the pin can slide.

In the second invention, in the high-voltage switch that uses a blade-shaped contact for the movable electrode and turns on and off the electric circuit by moving the movable electrode to and from the fixed electrode, one end is connected to and separated from the fixed electrode. The input lever provided on the movable electrode as the movable contact to be connected to the output lever that transmits the force from the operation mechanism to the input lever and moves the movable electrode with the pin, and the input lever is connected to the output lever with the pin A high-voltage switch characterized in that the input portion is formed in a groove shape so that the pin can slide.

The present invention has the above-described configuration and has the following effects. If comprised in this way, it is possible to make the rotation angle of a movable electrode and the rotation angle of an output lever into about 90 degree | times. Further, the angle θ formed by the movable electrode and the output lever can be set to about 90 degrees at the entrance position and the cut position. Then, the rotation angle of the movable electrode and the rotation angle of the output lever are set to about 90 degrees, and the angle θ formed by the movable electrode and the output lever is set to about 90 degrees at the on position and the off position at the same time. You can get none.

If it demonstrates in detail using FIG. 2, the rotation angle of the movable electrode 5 and the rotation angle of the output lever 12 are about 90 degree | times. The angle θ formed by the movable electrode 5 and the output lever 12 is about 90 degrees at the entrance position and the cut position. Assuming that the rotating force of the output lever 12 is W1 and ignoring the frictional resistance, the force W for rotating the movable electrode 5 is W = W1 / cos θ according to the lever principle. Since the driving force transmission efficiency in the vicinity of the cut position is high, the force W for rotating the movable electrode 5 is very large with respect to W1. Specifically, since the force W for rotating the movable electrode 5 is W = W1 / cos θ, for example, when θ = 80 degrees, W = about W1 / 0.17, and when θ = 70 degrees, W = About W1 / 0.34. Here, the angle θ formed by the movable electrode 5 and the output lever 12 is set to about 90 degrees. When θ = 90 degrees, W is infinite when calculated by ignoring the frictional resistance. This is because it is not preferable for expressing the above.

On the other hand, for the same reason, the force W for rotating the movable electrode 5 in the middle of opening and closing is W = W1 / cos θ, so that the driving force transmission efficiency is low, so the force W for rotating the movable electrode 5 is relative to W1. Does not grow. Specifically, when the frictional resistance is ignored, the force W for rotating the movable electrode 5 is W = W1 / cos θ, so that, for example, when θ = 175 degrees, W = about W1 / 0.996. However, although the efficiency of the driving force during opening and closing is poor, there is no problem because the contact friction load is small during opening and no large driving force is required.

Further, since the rotation angle of the movable electrode is about 90 degrees, the distance between the movable electrode 5 and the fixed electrode 4 can be increased even if the movable electrode 5 is short.

As described above, since the driving force transmission efficiency in the vicinity of the entrance position and the vicinity of the cut position is high, the force for rotating the movable electrode in the vicinity of the entrance position and the vicinity of the cut position can be increased. In addition, the distance between the movable electrode and the fixed electrode can be increased. Therefore, a highly reliable switch with high withstand voltage performance, current interruption performance, short-time current performance, and input current performance can be miniaturized. In addition, since the movable electrode is directly driven by the output lever, a connecting link is not required unlike the conventional high voltage switch. Therefore, the material cost is reduced by reducing the number of parts, and the labor for assembling is reduced to facilitate the production.

An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a cross-sectional view of a high-pressure switch showing an embodiment having the characteristics described in claim 1 of the present invention, where (a) is in the vicinity of the entry position, (b) is in the middle of the opening, (c) Indicates the vicinity of the cutting position. Holes for penetrating the conductors are respectively provided on the opposite side surfaces 1a and 1b of the case 1 which is the casing of the high voltage switch, and the bushing 2 and the bushing 3 made of resin or insulator are inserted through the holes for penetrating the conductor. The bushing 2 is provided with a fixed electrode 4, and the bushing 3 is provided with a hinge electrode 6. By electrically connecting and disconnecting the fixed electrode 4 and the hinge electrode 6, the high-voltage switch turns the electric circuit on and off.

The hinge electrode 6 is provided with a shaft 9 as a fulcrum so that the movable electrode 5 can rotate, and the hinge electrode 6 and the movable electrode 5 are pressure-contacted so that the hinge electrode 6 and the movable electrode 5 are electrically connected. A contact spring 10 is provided. A fixed contact 7 is provided on the fixed electrode 4 so as to be a pair of a plurality of pieces sandwiching the fixed electrode 4, and the fixed contact 7 is positioned so as to sandwich the contact portion 5a of the movable electrode 5 when the high-voltage switch is in an on state. A contact spring 15 for biasing the fixed contact 7 inward is provided so as to electrically connect the fixed electrode 4, the fixed contact 7 and the movable electrode 5.

An output lever 12 is provided on the output shaft 11 of the operation mechanism 20, and the connecting portion 12 a of the output lever 12 and the groove portion 5 c of the movable electrode 5 are connected using a pin 13. The pin 13 can slide in the groove 5c.

In the high-voltage switch according to the present invention, the output lever 12 provided on the output shaft 11 is rotated by the operation of the operation mechanism 20, and the pin 13 provided on the connection portion 12a slides in the groove portion 5c, whereby the movable electrode 5 is hinged. The shaft 9 provided on the electrode 6 is rotated about a fulcrum. When the movable electrode 5 rotates, the movable electrode 5 and the fixed electrode 4 come in contact with each other, and the electric circuit is turned on and off.

FIG. 3 is a cross-sectional view of a high-pressure switch showing an embodiment having the characteristics described in claim 2 of the present invention, where (a) is in the vicinity of the entry position, (b) is in the middle of the opening, (c) Indicates the vicinity of the cutting position. Holes for penetrating the conductors are respectively provided on the opposite side surfaces 1a and 1b of the case 1 which is the casing of the high voltage switch, and the bushing 2 and the bushing 3 made of resin or insulator are inserted through the holes for penetrating the conductor. The bushing 2 is provided with a fixed electrode 4, and the bushing 3 is provided with a hinge electrode 6. By electrically connecting and disconnecting the fixed electrode 4 and the hinge electrode 6, the high-voltage switch turns the electric circuit on and off.

The hinge electrode 6 is provided with a shaft 9 as a fulcrum so that the movable electrode 5 can rotate, and the hinge electrode 6 and the movable electrode 5 are pressure-contacted so that the hinge electrode 6 and the movable electrode 5 are electrically connected. A contact spring 10 is provided. The fixed electrode 4 is provided with a plurality of pairs of fixed contacts 7 that sandwich the fixed electrode 4, and the fixed contact 7 is positioned so as to sandwich the contact portion 5 a of the movable electrode 5 when the high-voltage switch is in the on state. A contact spring 15 for biasing the fixed contact 7 inward is provided so as to electrically connect the fixed electrode 4, the fixed contact 7 and the movable electrode 5.

An output lever 12 is provided on the output shaft 11 of the operation mechanism 20, an input lever 16 is provided on the movable electrode 5, and the connecting portion 12 a of the output lever 12 and the groove portion 16 c of the input lever 16 are connected using a pin 13. The pin 13 can slide in the groove 16c.

In the high-voltage switch according to the present invention, the output lever 12 provided on the output shaft 11 is rotated by the operation of the operation mechanism 20, and the pin 13 provided on the connection portion 12 a slides along the groove portion 16 c, thereby moving together with the input lever 16. The electrode 5 rotates about a shaft 9 provided on the hinge electrode 6 as a fulcrum. When the movable electrode 5 rotates, the movable electrode 5 and the fixed electrode 4 come in contact with each other, and the electric circuit is turned on and off.

Here, the operation of providing the input lever 16 on the movable electrode 5 will be described. If the angle θ formed by the input lever 16 provided on the movable electrode 5 and the output lever 12 is set to about 90 degrees, in particular, the movable electrode 5 and the output lever 12 are The formed angle θ need not be about 90 degrees, and the degree of freedom of the position and orientation of the movable electrode 5 is increased.

FIG. 4 is a cross-sectional view of a high-pressure switch showing an embodiment having the characteristics described in claim 4 of the present invention, wherein (a) is in the vicinity of the entry position, (b) is in the middle of opening, (c) Indicates the vicinity of the cutting position. Holes for penetrating the conductors are respectively provided on the opposite side surfaces 1a and 1b of the case 1 which is the casing of the high voltage switch, and the bushing 2 and the bushing 3 made of resin or insulator are inserted through the holes for penetrating the conductor. The bushing 2 is provided with a fixed electrode 4, and the bushing 3 is provided with a hinge electrode 6. By electrically connecting and disconnecting the fixed electrode 4 and the hinge electrode 6, the high-voltage switch turns the electric circuit on and off.

The hinge electrode 6 is provided with a shaft 9 as a fulcrum so that the movable electrode 5 can rotate, and the hinge electrode 6 and the movable electrode 5 are pressure-contacted so that the hinge electrode 6 and the movable electrode 5 are electrically connected. A contact spring 10 is provided. The fixed electrode 4 is provided with a plurality of pairs of fixed contacts 7 that sandwich the fixed electrode 4, and the fixed contact 7 is positioned so as to sandwich the contact portion 5 a of the movable electrode 5 when the high-voltage switch is in the on state. A contact spring 15 for biasing the fixed contact 7 inward is provided so as to electrically connect the fixed electrode 4, the fixed contact 7 and the movable electrode 5.

An output lever 12 is provided on the output shaft 11 of the operation mechanism 20, an input lever 16 is provided on the movable electrode 5, and a connection portion 12 a of the output lever 12 and a substantially arc-shaped groove portion 16 d of the input lever 16 are coupled using a pin 13. . The pin 13 can slide in the groove 16d.

In the high-voltage switch according to the present invention, the output lever 12 provided on the output shaft 11 is rotated by the operation of the operation mechanism 20, and the pin 13 provided on the connecting portion 12a slides in the substantially arc-shaped groove 16d, whereby the input lever 16, the movable electrode 5 rotates about a shaft 9 provided on the hinge electrode 6 as a fulcrum. When the movable electrode 5 rotates, the movable electrode 5 and the fixed electrode 4 come in contact with each other, and the electric circuit is turned on and off.

Here, the action of making the groove portion substantially arc-shaped will be described. In the case where the angle θ formed by the input lever 16 and the output lever 12 provided on the movable electrode 5 cannot be set to about 90 degrees, particularly in the vicinity of the entering position or the cutting position. This is effective when it is desired to increase the driving force transmission efficiency in either of the vicinity.

This will be described in detail by taking as an example the case where it is desired to increase the driving force transmission efficiency in the vicinity of the entry position. As shown in FIG. 5 (a), when the rotating force W1 of the output lever 12 is applied, the principle of the lever is applied to the tangent line A at the contact point with the pin 13 of the substantially arc-shaped groove portion 16d provided in the input lever 16. The driving force F of the output lever 12 works in the direction of the perpendicular line B. The driving force F is F = W1 / sin (θ−β), where β is the angle formed by the input lever 16 and the driving force F. When the driving force F is transmitted to the input lever 16, the driving force F is decomposed by an angle β formed by the input lever 16 and the driving force F. Since the driving force F is decomposed by β, the force W for rotating the input lever 16 is W = Fsinβ. Therefore, W = W1sinβ / sin (θ−β). Here, the direction of the driving force F can substantially coincide with the direction of the output lever 12 by making the shape of the substantially arc-shaped groove 16 d appropriate. That is, β≈θ can be set. When β≈θ, even if the angle θ formed by the input lever 16 and the output lever 12 cannot be reduced to about 90 degrees, the driving force F and the rotating force W are the rotating force W1 of the output lever 12. Therefore, it is possible to obtain a force equivalent to the force W for rotating the movable electrode shown in the first embodiment.

In the high-voltage switches of Examples 1 to 3, the bushings 2 and 3 are attached to the case 1, but the case 1 may be molded integrally with the bushings 2 and 3 by using a resin material. Similarly, the output shaft 11 may be formed integrally with the output lever 12.

In the high-voltage switches according to the first to third embodiments, the movable electrode is used as one piece and a fixed contact composed of a plurality of pairs is used. However, the movable electrode is used as two pieces and the fixed electrode is sandwiched between the fixed electrodes. It is good also as a structure which is not used.

In the high-voltage switches of the first to third embodiments, the positions of the bushings 2 and 3 are attached to the opposite side surfaces 1a and 1b of the case 1, but the same effect can be obtained even if they are attached to the same surface of the case 1. It is possible to obtain.

In the high-voltage switches according to the first and second embodiments, the grooves are linear and arranged parallel to the longitudinal direction of the movable electrode 5, but may be provided obliquely with respect to the longitudinal direction.

In the high voltage switch according to the third embodiment, the groove is formed in a substantially arc shape and arranged in the longitudinal direction of the movable electrode 5, but it may be provided in a substantially wave shape or a substantially crank shape depending on the position where the driving force is required. Good.

In the high-voltage switches of the first and second embodiments, the rotation angle of the movable electrode 5 and the rotation angle of the output lever 12 are about 90 degrees, and the angle θ formed by the movable electrode 5 and the output lever 12 is the input position and the cut-off position. Although the position is about 90 degrees, the best mode for carrying out the invention is about 90 degrees. As shown in (Effect of the invention) (0023), the frictional resistance is ignored. In calculation, the force W for rotating the movable electrode 5 is very large without being less than the force W1 for rotating the output lever 12, and therefore does not need to be about 90 degrees.

FIG. 2 is a cross-sectional view of an “on” state high pressure switch showing an embodiment having the features of claim 1. FIG. 2 is a cross-sectional view of a “breaking” high pressure switch showing an embodiment having the features of claim 1. FIG. 2 is a cross-sectional view of a “cut” state high pressure switch showing an embodiment having the features of claim 1. It is explanatory drawing of the "on" state movable electrode 5 and the output lever 12 of the Example of Claim 1. FIG. 3 is an explanatory diagram of the “interrupting” movable electrode 5 and the output lever 12 according to the embodiment of claim 1. It is explanatory drawing of the "OFF" state movable electrode 5 and the output lever 12 of the Example of Claim 1. FIG. 3 is a cross-sectional view of an “on” state high pressure switch showing an embodiment having the features of claim 2. FIG. 3 is a cross-sectional view of a “breaking” high pressure switch showing an embodiment having the features of claim 2. FIG. 3 is a cross-sectional view of an “off” state high pressure switch showing an embodiment having the features of claim 2. FIG. 5 is a cross-sectional view of an “on” state high pressure switch showing an embodiment having the features of claim 4. FIG. 5 is a cross-sectional view of a “breaking” high pressure switch showing an embodiment having the features of claim 4. FIG. 5 is a cross-sectional view of a “cut” state high pressure switch showing an embodiment having the features of claim 4. It is explanatory drawing of the "on" state movable electrode 5, the input lever 16, and the output lever 12 of the Example of Claim 4. FIG. 6 is an explanatory diagram of the “interrupting” movable electrode 5, the input lever 16, and the output lever 12 according to the embodiment of claim 4. It is explanatory drawing of the "OFF" state movable electrode 5, the input lever 16, and the output lever 12 of the Example of Claim 4. It is sectional drawing of the conventional "on" state high voltage | pressure switch. FIG. 6 is a cross-sectional view of a conventional “breaking” high-pressure switch. It is sectional drawing of the conventional "cut" state high voltage | pressure switch. It is explanatory drawing of the movable electrode 605, the link 608, and the output lever 612 of the conventional "on" state high voltage switch. It is explanatory drawing of the movable electrode 605, the link 608, and the output lever 612 of the conventional "under interruption" high voltage switch. It is explanatory drawing of the movable electrode 605, the link 608, and the output lever 612 of the conventional "OFF" state high voltage switch. FIG. 6 is a cross-sectional view of an “on” state high pressure switch showing an embodiment having the features of claim 5. FIG. 7 is a cross-sectional view of a “breaking” high pressure switch showing an embodiment having the features of claim 5. FIG. 6 is a cross-sectional view of a “cut” state high pressure switch showing an embodiment having the features of claim 5.

Explanation of symbols

1 case 2 bushing 3 bushing 4 fixed electrode 5 movable electrode 6 hinge electrode 7 fixed contact 9 shaft 10 contact spring 11 output shaft 12 output lever 13 pin 14 stopper 15 contact spring 16 input lever 17 sliding pair 608 link

Claims (5)

In a high-voltage switch that uses a blade-shaped contact for the movable electrode and turns the electric circuit on and off by moving the movable electrode to and from the fixed electrode, one end is a movable contact that contacts and separates from the fixed electrode. A movable electrode having a portion as an input portion and an output lever that transmits the force from the operation mechanism to the movable electrode to move the movable electrode are connected by a pin, and an input portion in which the movable electrode is connected to the output lever by a pin, A high pressure switch characterized by a groove shape so that the pin can slide. In a high-voltage switch that uses a blade-shaped contact for the movable electrode and turns the electric circuit on and off by moving the movable electrode to and from the fixed electrode, one end is provided on the movable electrode as a movable contact that contacts and separates from the fixed electrode The input lever and the output lever that transmits the force from the operating mechanism to the input lever and moves the movable electrode are connected by a pin, and the input part is connected to the output lever by the pin. A high-pressure switch characterized by a groove shape so that 3. The high-voltage switch according to claim 1, wherein the blade-shaped contact used for the movable electrode has a rod shape. 4. The high-voltage switch according to claim 1, wherein the groove shape is a substantially arc shape. An input lever provided on a movable electrode that has one end as a movable contact that contacts and separates from the fixed electrode and an end that is not a movable contact as an input, or a movable electrode that has one end as a movable contact that contacts and separates from the fixed electrode And an output lever for transmitting the force from the operation mechanism to the movable electrode and moving the movable electrode by a sliding pair such as a slide bush, and the sliding pair slides relative to the movable electrode. The high pressure switch according to any one of claims 1 to 3.