KR100995403B1 - Transfer selection element and transfer selection switching apparatus of auto transfer switch, auto transfer switch having said apparatus - Google Patents

Abstract

The present invention provides a power supply having a switch selector, a switch selector switch part and a switch selector switch part of a power switchgear for enabling simple and easy switching of a commercial power side contact, a neutral point, and an emergency power side contact. As for the transfer switch,

The switch selector is formed with a first selection bar guide groove in which the selection bar of the drive link of the driving unit is located on one side thereof, the first selection unit to which the commercial power interlocking link of the movable terminal unit is coupled; A second selection bar guide groove to which the selection bar is positioned and moved is formed at one side, and the other side includes a second selection unit to which an emergency power linkage link of the movable terminal unit is coupled; And a fixed shaft configured to foldably couple the first selection part and the second selection part such that the first selection bar guide groove and the second selection bar guide groove communicate with each other to form the selection bar guide groove. ,

It is characterized in that the independent control of the operation terminal unit for the commercial or emergency power supply for the power supply switchgear commercial or emergency power supply.

Power switchgear, selector switch, selector switch unit, drive bar, drive link, selector bar

Description

FIELD OF AUTO TRANSFER SWITCH, AUTO TRANSFER SWITCH HAVING SAID APPARATUS}

The present invention relates to a power supply switchgear, and more particularly, so that switching between commercial power (first power) side contact, neutral point and emergency power (second power) side contact can be easily and easily implemented. It relates to a power supply switchgear having a switch selector, a switch selector switch portion and the switch selector switch of the power switch.

In general, the power transfer switch is used to switch the commercial power and emergency power to minimize the damage in the institution that is heavily damaged by power outages, such as hospitals, factories, research institutes, broadcasting stations, etc. When the power source is called a commercial power source (first power source), and the power supplied by the power consumer is called an emergency (spare) power source (second power source), the power source is changed from the commercial power source to the emergency power source or the emergency power source to the commercial power source. It is a switching device. At this time, the emergency power may be a large-capacity rechargeable battery or a method of operating a power generation facility separately from a diesel engine (generator type) .In contrast, a method of using a standby power source by separately configuring transmission lines ( Battery type). The above-mentioned power transfer switch is supplied with power from a commercial power source using a switching switch, and when the commercial power is outage, power switching (switching) is performed to receive power from an emergency power source.

1 to 3 is a view showing the configuration of the "automatic switching switch" used in the power switching switch of the Republic of Korea Patent Publication No. 2007-18636, as shown in Figures 1 to 3, the "automatic switching switch of the prior art Power supply switchgear equipped with "commercial power terminal (first fixed terminal; 810) connected to the commercial power (first power), emergency power terminal (second fixed terminal; 820) and the load connected to the emergency power A fixed terminal part 800 including a load terminal 830 to be formed; A movable terminal part electrically connected to the load terminal 830 and selectively contacted with the first fixed terminal 810 or the second fixed terminal 820 by rotation about a terminal rotation shaft 110 to be electrically connected to the load terminal 830. 100); It includes a switch (A, see Fig. 5) for controlling the movable terminal unit 100 to electrically connect with the first fixed terminal 810 or the second fixed terminal 820.

The switching unit (A) is composed of a link link 210, a control link unit (B) and a rotation control unit (C), the control link unit (B) is a fixed shaft 234, the control link 230 and the first It is composed of a frame (3a), the rotation control unit (C) includes a rotation unit 290 and a rotation link unit (E) having a pressing unit 290, the coupling rod 291 and the pressing device 292. It comprises a movement control unit (D). The movement control unit D of the rotation control unit C includes a hooking link 240, first and second support links 270 and 260, and a cam link 250.

The power switch of the prior art having the above-described configuration is the second contact of the movable terminal unit 100 by rotating the connection link 210 of the switching unit is driven when the pressing unit 280 is driven in the event of an electrical leakage, power failure, etc. of the commercial power source The terminal 122b is brought into contact with the second fixed terminal 820 to automatically switch power from the commercial power source to the emergency power source.

However, the above-described power supply switchgear according to the related art requires the repair or replacement of the movable terminal portion in which the power switching is performed in case of breakage or failure, and thus, the first contact terminal 122a or the second terminal of the movable terminal unit 100. Since any one of the contact terminals 122b is always in contact with any one terminal of the power input terminal (fixed terminal), the power of one of the commercial power source or the emergency power source is always in the ON state. There is a problem that can cause an electric shock accident.

Therefore, the present invention is to solve the above-described problems of the prior art, to enable the independent switching of commercial or emergency power in the power switchgear, and the structure of the switching selector for the selection of independent switching of commercial or emergency power To provide a power supply switchgear having a switch selector, a switch selector switch part, and the switch selector switch part of the power switchgear to reduce productivity and to improve productivity by facilitating the production of the product. For that purpose.

Switching selector of the power transfer switch of the present invention for achieving the above object, the first selection bar guide groove which is moved to the selection bar of the drive link of the drive unit is formed on one side, the commercial power interlocking link of the movable terminal portion A first selection unit to which is coupled; A second selection bar guide groove to which the selection bar is positioned and moved is formed at one side, and the other side includes a second selection unit to which an emergency power linkage link of the movable terminal unit is coupled; And a fixed shaft configured to foldably couple the first selection part and the second selection part such that the first selection bar guide groove and the second selection bar guide groove communicate with each other to form a selection bar guide groove. It is characterized by.

In the above-described configuration, the first shaft and the second shaft are coupled to each other to form a fixed shaft hole through which the fixed shaft penetrates to each other. In more detail, the first selection unit includes a second selection unit insertion groove into which the second selection unit is inserted in the coupling unit, and each of the side walls of the second selection unit insertion groove has a first shaft hole and a second shaft hole, respectively. And a third shaft hole is formed in a portion inserted into the second selection unit insertion groove of the second selection unit. When the first selection unit and the second selection unit are foldable, the first to third shaft holes communicate with each other. The fixed shaft is inserted therein so that the first selector and the second selector are foldably coupled to each other about the fixed shaft.

Switching selection switch of the power switching switch of the present invention for achieving the above object, in the power switching switch which is selected by switching the control link shaft of the switching unit, driven by the control link shaft, the movable terminal portion and the fixed terminal portion A driving unit for controlling to be in any one of a commercial power supply, an emergency power supply, or a neutral point state; A selection unit for converting the position of the drive link of the switching selector for the movable terminal unit to switch to any one of a commercial power supply, an emergency power supply, or a neutral point state; A selection switch unit for generating a driving force so that the selection unit can change the position of the drive link of the switching selector; A switching selector for independently performing open contact for commercial power supply or emergency power supply of the movable terminal unit when power is transmitted by the drive link positioned by the selection unit; A hooking part to fix the control link shaft to the driving part to maintain a commercial power supply or an emergency power supply state; And a release switch unit for releasing the fixing operation on the control link shaft of the hooking unit.

In the above configuration, the drive unit, one end is rotatably coupled to the control link shaft, the other end is rotatably coupled to the upper end of the drive bar; A lower end portion includes a driving bar rotatably fixed to one frame of an inner portion of the power transfer switch; And a driving link having a selection bar coupled to the driving bar to select a first selection unit or a second selection unit of the switching selector for independently driving a commercial power terminal or an emergency power terminal of a power switching switch. .

The drive link is protruded from one side, characterized in that the selection rod is formed to control the position of the drive link so that the selection bar is located in the first selection bar guide groove or the second selection bar guide groove.

The selector may include: a selector having a selector lever for manual operation rotatably fixed at one end thereof, and having an upper end of the driving rod of the selector switch unit rotatably coupled to a position at the center; A selection rod control link having a lower end rotatably coupled to the other end of the selector; One end portion is rotatably coupled to the drive bar, the upper end portion of the selection rod control link is rotatably coupled to one position of the center portion, the selection rod rotation bar formed with a selection rod guide groove is inserted into the other end of the selection rod; Characterized in that consists of.

The selector switch unit may include: a driving rod having an upper end rotatably coupled with the selector and a lower end coupled with the selector switch; It is characterized in that it comprises a; selector switch for moving the drive rod up and down by receiving a power transfer signal.

The switch selector has the same configuration as the switch selector of the present invention as described above in more detail the configuration and operation of the switch selector switch, the selection bar formed at the end of the drive link is located in the selection bar guide groove of the switch selector The selection rod protruding from one side is combined with the selection rod control link of the selection unit. When the selection rod control link moves up and down, the selection rod rotates about one end by the selection rod so that the selection bar is selected as the first selection unit or the second selection unit. The first selection bar guide groove or the second selection bar guide groove of the part, and then the first selection part or the second selection part when the driving bar of the driving part is rotated to the front surface around the lower part by the control link and the connection link. The first contact body part or the second contact body part for the commercial or emergency power contact of the additional movable terminal part is replaced with the fixed terminal part. This allows commercial or emergency power to be supplied to the load terminals.

The hooking portion, when the driving bar of the drive unit is located in the commercial or emergency power supply state of the power switchgear is formed a hooking groove for fixing the control link shaft, one end of the hooking member is rotatably fixed; And a supporter for supporting the hooking member so that the hooking member provides an elastic force directed upward.

The release switch unit may include a release bundle having a semicircular cross section and having a flat cross section in the radial direction at an upper end of the hooking member; A release shaft having one end attached to one side of the release bundle; A release lever having one end coupled to the release shaft; And a release switch coupled to the other end of the release lever and having a release switch shaft for moving the other end of the release lever back and forth.

Power switchgear provided with a switching selection switch unit of the present invention for achieving the above object, the switching unit is provided on the inner side of the main body frame of the power switchgear; The driving unit and the selection unit coupled to a control link shaft of the switching unit to selectively control any one of commercial power supply, emergency power supply, or a neutral point state of the movable terminal unit; A switch selector switch including the selector switch unit, the selector switch, the hooking unit, and the release switch unit; A movable terminal unit for maintaining a commercial power source, an emergency power source, and a neutral point state by the switching selector switch unit; And a fixed terminal unit for supplying commercial or emergency power to the load terminal through the movable terminal unit.

As described above, the switch selector switch unit of the present invention includes a first contact body that is a commercial power terminal of the movable terminal unit for each state when the movable terminal unit is switched to any one of commercial power supply, emergency power supply, or neutral point state. And a structure for controlling the second contact body, which is an emergency power terminal, independently, are simplified, which facilitates the manufacture of the power transfer switch and also significantly lowers the failure rate.

Switching selection switch unit of the present invention having the above-described configuration provides an effect to quickly and easily perform the power switching operation for commercial power, emergency power or neutral point in the power switching switch by a simple structural feature.

In addition, the power switchgear provided with a switch selector switch of the present invention simplifies the structure of the power switchgear by simplifying the structure of the switch selector switch, thereby providing an effect of improving the productivity of the product, as well as of the internal parts The simplifications result in increased durability and significantly reduced failure rates, resulting in lower maintenance costs.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 4 is a perspective view showing the internal configuration of the power switching switch (1) equipped with a switch selector switch according to an embodiment of the present invention.

As shown in FIG. 4, the power switching switch 1 according to the exemplary embodiment of the present invention supports an internal configuration of the switching unit A on the inner side of the main body frame 2 inside the main body frame 2. It is installed in the 1st frame 3a provided in order to. And on the opposite side of the surface on which the switching unit (A) of the first frame (3a) is installed, the switching selection switch unit (F) according to an embodiment of the present invention is installed to interlock with the switching unit (A), the switching selection switch Part (F) is connected to a movable terminal unit 400 (see FIG. 6) configured to be located at a commercial power supply (first power) supply state, an emergency power supply (second power supply) supply state, and a neutral point state. The rear surface of the 400 has a configuration in which the fixed terminal portion 800 (see Fig. 3) is installed.

In the above-described configuration, the switching unit A generates a rotational driving force that enables the movable terminal unit 400 to switch the contact point, and provides it to the switching selection switch unit F.

FIG. 5 is an exploded perspective view showing the configuration of the switching unit A configured in the power transfer switch 1 of FIG. 4 performing the above-described function, and FIG. 6 is a view of the switching unit (1) in the power transfer switch 1 of FIG. Partial perspective view showing the combined state of A).

5 and 6, the switching unit (A) is generated in the rotation control unit (C) so that the connection link 30 for rotating the drive bar (20a) of the switching selector switch unit (F) is rotated Control link unit (B) for transmitting the driving force for power switching to the switching selector switch (F) (first frame 3a, control link 230, control link shaft 231, second control link 232, And a rotation controller C for generating power for rotating the control link shaft 231 of the control link portion B).

In this case, the control link unit (B) is a first frame (3a) to induce the rotation of the control link shaft 231 so that the control link shaft 231 is rotated within a predetermined angle range around the fixed shaft 234 A guide slot 221 formed at the top; Control link is rotatably coupled through the first frame (3a), coupled through the guide slot 221 in the state that the upper end of the elastic member (281) of the rotation control unit (C) is rotatably coupled. An axis 231; A fixed shaft 234 formed in the first frame 3a in parallel with the control link shaft 231; A control link 230 having one end coupled to the control link shaft 231 together with the upper end of the elastic member 281 of the rotation control unit C, and the other end rotatably coupled to the fixed shaft 234; One end is coupled to the fixed shaft 234 together with the control link 230, and the other end includes a second control link 232 coupled to the coupling shaft 230 of the rotation control unit (C).

The first frame 3a is fixed to the main frame 2 so that the fixed shaft 234 is fixed, the guide slot 221 is formed in an arc shape having a predetermined angle around the fixed shaft 234, The control link shaft 231 is fitted into the guide slot 221 to move along the guide slot 221.

The rotation control unit C of the embodiment of the present invention is pressurized to provide an elastic force to the control link 230 so that the control link 230 is moved to any one end of the guide slot 221 around the fixed shaft 234. And a movement control unit D for moving the control link shaft 231 from one end of the guide slot 221 to the other end of the guide slot 221.

The pressing portion 280 has a rotating link 282, one end of which is rotatably coupled to the support frame 3c; Its length is configured to be variable so that one end is coupled to the rotary link 282 and the other end is rotatably coupled to the control link shaft 231, the elastic member 281 to push the control link shaft 231; Can be. At this time, the elastic member 281 is a coil spring, and is coupled to the rotation link 282 in a state in which the rotation link 282 is fitted. Here, the rotation link 282 is hinged to the support frame 3c so as to rotate smoothly by the movement of the control link shaft 231.

As the movement control unit (D) rotates the control link shaft 231 from one end of the guide slot to the other end along the guide slot 221 around the fixed shaft 234, Hooking link 240, rotating link unit (E; cam link 250, second support link 260, first support link 270), pivoting portion 290, hooking link 240 and cam It comprises a coupling shaft 235 for coupling the link 250 to the control link unit (B), each configuration of the above-described movement control unit (D) will be described in more detail.

First, the hooking link 240 is configured to include a pair of hooking protrusions 241a and 241b, the center region of which is rotatably coupled to the fixed shaft 234, and the control link shaft 231 is engaged.

Next, the rotating link unit E rotates the hooking link 240 about the fixed shaft 234 so that the control link shaft 231 caught by the hooking protrusions 241a and 241b rotates. In order to rotate the first end, the first support link 270 is rotatably installed on the support frame (3c) by the hinge member 271, and one end is rotatably coupled to the other end of the first support link (270) The second support link 260 and the pin guide slot 251 into which the link pin 261 coupled to the other end of the second support link 260 is inserted are formed, the hooking link 240 and the coupling shaft 235 It is configured to include a cam link 250 is fixedly coupled by the rotation with the hooking link 240.

Next, the pivot 290 is configured to rotate the first support link 270 about the hinge member 271, as shown in Figures 5 to 7, the first support link 270 Combination rod 291 is coupled between both ends of the, and the coupling rod 291 is pushed upward to the first support link 270 is configured to include a pressing device 292 to rotate about the hinge member 271 Can be. At this time, the pressing device 292 is configured such that the coupling rod 291 can be linearly moved, a solenoid may be used. As described above, when the pressurizing device 292 is used as a solenoid, it may be operated by applying a momentary voltage, and the coupling rod 291 may be configured as a part of the solenoid.

Unlike the above-described configuration, the rotation control unit C is configured such that the control link shaft 231 is rotated about the fixed shaft 234. The pressurizing device 292 may have various configurations such as a motor. In addition, the rotation controller C includes a lever fixing part 236 (see FIG. 4) to which a lever for rotating the control link shaft 231 is coupled to allow the user to manually move the control link shaft 231. Can be installed separately. In FIG. 4, the lever fixing part 236 is configured to be connected to the movement control unit D such that the movement control unit D is rotated about the fixed shaft 234 when the lever fixing unit 236 is rotated by the lever.

FIG. 7 is a perspective view illustrating a state in which the switching unit A and the driving unit 20 of the switching selector switch unit F are connected to each other in the power switch 1 of FIG. 5, and FIG. 8 is a switching selector G of FIG. 7. Is an exploded perspective view of FIG. 9, and FIG. 9 is a view illustrating a coupling state of the selection unit 310 and the driving unit 20 of the switching selection switch unit F in the power switching switch 1 of FIG. 4.

As shown in FIGS. 5 to 9, the switch selector switch F of FIG. 4 includes the first and second movable terminal parts 400 driven by the driving bar 20a rotated by the connection link 30. A driving unit 20 which is in contact with the fixed terminals 810 and 820 (see FIG. 3) or controls to be in a neutral point state; A drive coupled to the drive bar 20a to adjust the position of the selection bar 23 formed at the end of the drive link 21 such that the movable terminal 400 contacts the first or second fixed terminal 810, 820. A selection unit 310 for moving the link 21 up and down; A selection switch unit 320 generating a driving force for upward movement of the driving link of the selection unit 310; When power is transmitted by the drive unit 20 positioned by the selector 310, the first fixed terminal 400a or the second contact body 400b of the movable terminal 400 may be selectively selected. 810 or the switching selector (G) in contact with the second fixed terminal (820); In order to maintain contact with the first fixed terminal 810 or the second fixed terminal 820 of the first contact body 400a or the second contact body 400b of the movable terminal 400, the control link shaft ( A hooking part 330 for fixing 231; It is composed of a release switch unit 340 for releasing the fixing operation for the control link shaft 231 of the hooking portion 330.

Each configuration of the above-described switching selection switch unit F will be described in more detail with reference to FIGS. 5 to 9 as follows.

As shown in FIG. 7, the driving unit 20 has one end of the guide slot 221 for transmitting the driving force transmitted for the switching of the movable terminal unit 400 from the switching unit A to the driving bar 20a. Through it is rotatably coupled to the control link shaft 231 protruding to the opposite side of the surface on which the switching portion (A) of the first frame (3a) is installed, the other end of the drive bar of the switching selector switch (F) ( A connecting link 30 rotatably coupled to an upper end of the 20a to transfer the driving force of the switching unit A to the driving bar 20a; An upper end portion is rotatably coupled to one end of the connection link 30 and a lower end portion of the driving bar 20a rotatably fixed to the first frame 3a; After selecting the first selector 50 or the second selector 60 of the switching selector G, the first selector selected by using the driving force of the switching unit A transmitted by the driving bar 20a ( 50) or one end is rotatably coupled to the center of the drive bar 20a so as to independently drive the second selector 60, and the other end of the selector bar guide groove 60a of the switching selector G. The selection bar 23 which is moved along is coupled to each other, and protrudes in a horizontal direction on one side thereof and is coupled with the selection rod control link 311 of the selection unit 310 to move up and down according to the vertical movement of the selection rod control link 311. And a drive link 21 having a structure in which the selection rod 22 to be moved is formed.

Next, as shown in FIGS. 7 to 9, the selector 310 is provided with a selector lever 310a for rotating the drive link 21 by manual operation, and the selector lever 310a. Is provided with an end side is rotatably coupled to the second frame (3b) and the selector 310b is rotatably coupled to the upper end of the drive rod 322 of the selection switch unit 320 in one position of the center; A selection rod control link 311 rotatably coupled to the other end and the lower end opposite to the end coupled to the second frame 3b of the selector 310b; One end is rotatably coupled with the drive bar (20a), the upper end of the selection rod control link 311 is rotatably fixed to one position of the center, the selection rod 22 is inserted into the other end is moved The rod guide groove 313 is formed with a selection rod rotating bar 312;

In the selector 310 having the above-described configuration, when the driving rod 322 is moved by the selector switch 321 of the selector switch 320, the selector 310b is rotatable with the second frame 3b. The selection rod control link 311 is moved up and down by being rotated around the fixed end, so that the selection rod pivoting bar 312 is also pivoted about the end coupled with the second frame 3b, and the selection rod pivoting bar When the 312 is rotated, the selection rod 22 inserted into the selection rod guide groove 313 is moved up and down so that the driving link 21 is rotated about the end coupled with the driving bar 20a to select the selection bar ( 23 is moved along the selection bar guide groove 60a of the switching selector G to be selectively positioned in the first selection bar guide groove 51 or the second selection bar guide groove 61 (see FIG. 8). ).

Next, as shown in FIGS. 7 to 9, the selector switch 320 is rotatably coupled to the selector 310b and the lower end is coupled to the selector switch 321 by the selector switch 321. A driving rod 322 moved up and down; It consists of a selection switch 321 for moving the driving rod 322 up and down by receiving a power transfer signal. The selection switch 321 may be configured in the form of a solenoid switch.

Next, as shown in Fig. 7 and 8, the switching selector (G), the first of the upper part connected to the first power linkage link 460 for driving the first contact body portion of the movable terminal 400 1 selector 50; A lower second selector 60 coupled with a second power linkage link 460a for driving the second contact body portion of the movable terminal unit 400, wherein the selector bar 23 of the drive link 21 is A first selection bar guide groove 51 and a second selection bar guide groove 61 are formed in each of the first selection unit 50 and the second selection unit 60 to be coupled, and the first selection unit 50. And the second selection part 60 are in contact with each other, the first selection bar guide groove 51 and the second selection bar guide groove 61 communicate with each other to form the selection bar guide groove 60a so that the selection bar 23 Is moved along the selection bar guide groove (60a) is rotatably coupled by the fixed shaft 70 on the movable terminal 400 side to select the first selection unit 50 or the second selection unit 60 It has a structure.

The first selection unit 50 is coupled to the first connection link is inserted into the upper end of the movable terminal 400, the end of the first power linking link 460 of the movable terminal 400 is rotatably coupled A hole 52 is formed, and a second selection part insertion groove 54 into which the second selection part 60 is inserted is formed on a surface facing the second selection part 60, and the second selection part insertion groove ( The first shaft hole 53a and the second shaft hole 53b through which the fixed shaft 70 penetrates are formed at both side walls of the 54, respectively, and the selection bar 23 is positioned at the one position on the driving bar 20a side. Has a structure in which the first selection bar guide groove 51 is formed.

The second selector 60 is coupled to a second connection link in which a pin is inserted into the lower end of the movable terminal part 400 side so that the end of the second power linkage link 460a of the movable terminal part 400 is rotatably coupled. The hole 62 is formed, and the first shaft hole 53a and the second shaft hole 53b communicate with each other at a position where the ball 62 is inserted into the second selection unit insertion groove 54 of the first selection unit 50. A third shaft hole 63 is formed to allow the first selector 50 and the second selector 60 to be folded to each other so that the first selector 50 and the second selector 60 can be folded. The selector bar 23 is provided on the driving bar 20a side. ) Has a structure in which a second selection bar guide groove 61 is moved up and down.

In the above-described configuration, when the surfaces of the first selection unit 50 and the second selection unit 60 that face each other are in contact with each other, the first selection bar guide groove 51 and the first selection bar guide groove ( 61 is in communication with each other to form a selection bar guide groove (60a).

In the switching selector G having the above-described structure, the selection bar 23 has a first selection bar guide groove 51 of the first selection unit 50 or a second selection bar guide groove of the second selection unit 60. When the driving bar 20a is rotated toward the movable terminal unit 400, the selection bar 23 rotates the first selection unit 50 or the second selection unit 60 independently, so that the driving bar 20a is moved to the position 61. To facilitate the transition to the commercial power state, emergency power state or neutral state.

Next, as shown in FIG. 7, the hooking part 330 may include a control link shaft when the driving bar 20a is moved in a state in which any of the movable terminals of the movable terminal part 400 is in contact with the fixed terminal part. 231 has a structure in which the hooking groove 331 is fixed, and on either side of the first frame 3a or the second frame 3b in the region between the first frame 3a and the second frame 3b. A hooking member 330a fixedly rotatable; In order to provide the elastic force so that the hooking member 330a faces upward, one end is coupled to the hooking member 330a and the other end is the first or second to which the hooking member 330a is coupled at a position above the hooking member 330a. It is composed of; support member 332 of the elastic material fixed to the frame (3a, 3b).

Next, as shown in Figure 9, the release switch unit 340, the cross-sectional shape is semi-circular, the radial flat cross-section is a release bundle 342 is located in the upper end of the hooking member (330a); A release shaft 343 having one end attached to one side of the release bundle 342 and rotatably fixed to the frames 3a and 3b (see FIG. 4) to which the hooking member 330a is attached; A release lever 341 having one end coupled to the release shaft 343; A release switch 340a having a release switch shaft 340b coupled to the other end of the release lever 341 and rotating the release shaft 343 by moving the other end of the release lever 341 back and forth. do.

The release switch unit 340 having the above-described configuration has a release switch shaft in response to a trip signal such as a power failure when the driving bar 20a is positioned such that the movable terminal unit 400 is in contact with the fixed terminal unit 800. When 340b is moved back and forth, the end coupled with the release switch shaft 340b of the release lever 341 is moved back and forth to rotate the release shaft 343 and the release bundle 342, the release bundle 342 is rotated When the lower edge of the flat bottom of the release bundle 342 is pressed down the hooking member (330a), accordingly the control link shaft 231 is separated from the hooking groove 331, the driving bar (20a) is pressed portion ( The position is returned to its original position by the elastic force of the elastic member 281 of 280.

Switching selection switch unit (F) having the above-described configuration is coupled to the movable terminal 400, which will be described later, to control the movable terminal 400 so that the movable terminal 400 is in a commercial power connection, an emergency power connection or a neutral point state. do. As described above, the movable terminal 400 whose operation is controlled by the switching selector switch F will be described with reference to FIGS. 7 and 9.

As shown in FIGS. 7 and 9, the movable terminal unit 400 performing the above-described function includes a first contact body 400a for supplying commercial power separately formed and a second for supplying emergency power. The first contact portion 410 and the second contact portion 410a coupled to the contact body portion 400b, respectively, and the first and second contact portions coupled to the first and second contact body portions 400a and 400b, respectively. A power contact line 420 contacting / connecting one end of the 410 and 410a, a load terminal 830 coupled to the power connection line 420, and a first contact contacting the first fixed terminal 810 on the commercial power supply side The second contact body 400b which is in contact with the body 400a and the second fixed terminal 820 on the emergency power side is made up of the movable terminal support 500 which is coupled to and supported by the movable terminal rotation shaft 430. At this time, the elastic member is interposed between the first contact body part 400a and the first contact part 410 and between the second contact body part 400b and the second contact part 410a in a state where a gap is formed at a predetermined interval. The first contact terminal 400a or the second contact body 400b is a first fixed terminal 810 that is a commercial power supply terminal or a second fixed terminal that is an emergency power supply terminal when switching power for commercial or emergency switching. When separated from the 820, the first contact portion 410 or the second contact portion 410a by the elastic member is configured to prevent the occurrence of arc by maintaining a state of contact with each terminal of the fixed terminal portion 800 for a predetermined time.

The movable terminal 400 having the above-described configuration is configured to load current from the first contacting part 410 or the second contacting part 410a of the movable terminal part 400 from the fixed terminal part 800 through the power connection line 420. Forward to 830.

Meanwhile, in the first and second contact body parts 400a and 400b, the first connector 440 and the second connector 440a are coupled to the opposite sides of the first and second contact parts 410 and 410a, respectively. The first and second connectors 440 and 440a may be connected to the first contact cam 450 and the second contact cam 450a coupled to the first contact cam fixing shaft 451 and the second contact cam fixing shaft 451a. The first power linkage link 460 and the second power linkage link 460a are pin-coupled to the first and second contact cams 450 and 450a. Here, the first and second contact cams 450 and 450a are coupled to the first and second contact cam fixing shafts 451 and 451a to connect the first and second connectors 440 and 440a and the first and second power linkage links. Drives 460 and 460a.

The first and second power linkages 460 and 460a may include a first connection link coupling hole 52 and a second connection link coupling hole formed in the switching selector G of the switching selection switch unit F described above. (62) is rotatably coupled to each.

Switching selection switch unit (F) having the above-described configuration is the first fixed terminal 810 or the second fixed terminal (400a) or the first contact body 400a or the second contact body 400b of the movable terminal 400 820 to perform power switching from commercial power to emergency power, or from emergency power to commercial power, or to maintain the first and second contact portions 410 and 410a open with the fixed terminal portion 800. As a result, the power switching switch 1 provides a driving force to the movable terminal unit 400 to maintain the neutral point state.

Referring to Figures 9 and 10 will be described in the power switching operation process for power switching in the power switching switch (1) having a switching selection switch unit (F) according to an embodiment of the present invention as follows.

First, FIG. 9 shows that the movable terminal unit 400 is in a neutral point state. That is, both the first contact portion 410 and the second contact portion 410a are separated from the fixed terminal portion 800 to maintain the entire circuit open state, in this state check, repair, etc. It is possible to safely perform maintenance.

Next, FIG. 10 is a view showing a state in which the power transfer switch 1 of FIG. 4 is in contact with a commercial power source.

That is, when a power transfer signal for supplying power from the first fixed terminal 810, which is a commercial power terminal, to the load terminal 830 in the neutral point of FIG. 9 is input, the selection switch 321 of the selection switch unit 320 is The driving rod 322 is moved upward. When the driving rod 322 is moved in the upward direction, an end portion of the selection rod guide groove 313 of the selection rod control link 311 of the selection unit 310 is rotated to move upward, and thus the selection rod ( 22) is moved upward. When the selection rod 22 is moved upward, the drive link 21 configured in the driving unit 20 is also rotated so that the end where the selection bar 23 is formed is moved upward, so that the selection bar 23 is moved to the first selection unit ( 50 is positioned in the first selection bar guide groove 51. In this state, when the pressurizing device 292 provided in the rotating unit 290 of the rotating control unit C is driven to move the coupling rod 291 upward, the rotating link unit E of the moving control unit D is moved. And when the control unit shaft 231 is rotated by the pressure unit 280 performs the interlocking action to rotate the drive bar (20a) so that the upper end of the drive bar (20a) toward the movable terminal 400, drive bar ( The drive link 21 of the 20a is moved together to the movable terminal 400, whereby the selection bar 23 formed at the end of the drive link 21 rotates the first selector 50. The first contact body part 400a of the 400 is switched to contact the first fixed terminal 810. At this time, the control link shaft 231 is caught by the hooking groove 331 of the hooking member 330a when the first contact body 400a is in contact with the first fixed terminal 810. When the control link shaft 231 is caught and fixed to the hooking groove 331 of the hooking member 330a, the elastic member 281 of the pressing unit 280 is in a contracted state to store elastic energy.

As such, when a switch-off or power release signal is generated by a power failure in the switched state to receive power from the commercial power supply side, the release switch unit 340 is driven in the same manner as the release switch unit 340 described above to hook the member. The control link shaft 231 is separated from the hooking groove 331 by pressing 330a downward. When the control link shaft 231 is separated from the hooking groove 331, the control link shaft 231 is moved to the other end of the guide slot by the elastic energy accumulated in the elastic member 281 of the pressing unit 280. Accordingly, since the driving bar 20a is also returned to the position, the first contact body 400a of the movable terminal 400 is separated from the fixed terminal 800. At this time, if the second contact body part 400b of the movable terminal part 400 is kept in contact with the second fixed terminal 820 of the fixed terminal part 800, the neutral point state is maintained.

In the above-described power supply switchgear including the switching selector switch, the power supply switching to the emergency power supply side and the release thereof are performed by the drive link 21 of the switching selector G being moved downward by the selector 310 and thus the second switch. After the selector 60 is selected, the same process as the above-described power switching and releasing of the commercial power supply side is performed, so a detailed description thereof will be omitted.

1 to 3 is a view showing the configuration of the "automatic switching switch" used in the power switching switch of the Republic of Korea Patent Publication No. 2007-18636,

Figure 4 is a perspective view showing the internal configuration of the power switching switch 1 with a switching selection switch unit of the present invention,

5 is an exploded perspective view showing the configuration of the switching unit A in the power switch 1 of FIG.

FIG. 6 is a partial perspective view illustrating a coupled state of the switching unit A in the power switch 1 of FIG. 4;

FIG. 7 is a perspective view illustrating a state in which the switching unit A and the driving unit 20 of the switching selection switch unit F are connected to each other in the power transfer switch 1 of FIG. 5.

FIG. 8 is an exploded perspective view of the switching selector G of FIG. 7;

FIG. 9 is a view illustrating a coupling state of the selection unit 310 of the switching selector switch F and the driving unit 20 in the power switch 1 of FIG. 4.

FIG. 10 is a view illustrating a state where the power transfer switch 1 of FIG. 4 is in contact with a commercial power source.

DESCRIPTION OF THE RELATED ART [0002]

1: power transfer switch A: switching part

B: control link unit 3a: first frame

230: control link 231: control link axis

232: second control link 310: fixed shaft

C: rotation control unit 280: pressurization unit

281: elastic member 282: rotating link

D: movement control unit 240: hooking link

290: rotating part 291: coupling rod

292: pressurization device

E: rotating link unit 250: cam link

260: second support link 270: first support link

F: switching selector switch 20: drive part

30: connection link 20a: drive bar

21: Drive link 23: Selection bar

310: selection unit 310a: selector lever

310b: selector 311: selective load control link

312: selection rod rotation bar

320: selection switch unit

321: selection switch 322: drive rod

G: selector 50: first selector

51: first selection bar guide groove 52: first connection link coupling hole

54: second selection part insertion groove 53a: first shaft hole

53b: second shaft hole 60: second selection portion

60a: selection bar guide groove 61: second selection bar guide groove

62: second connection link coupling hole 63: third shaft hole

330: hooking portion 330a: hooking member

331: hooking groove 332: support

340: release switch unit 340a: release switch

340b: release switch shaft 341: release lever

342: release bundle 343: release axis

400: movable terminal portion 400a: first contact body portion

400b: second contact body portion 410: first contact portion

410a: second contact portion 420: power connection line

430: movable terminal shaft 500: movable terminal support

800: fixed terminal portion 810: first fixed terminal

820: second fixed terminal 830: load terminal

Claims (7)

A first selection bar guide groove to which the selection bar of the driving link is positioned and moved is formed at one side, and a first selection unit to which the commercial power linkage link of the movable terminal unit is coupled; A second selection bar guide groove to which the selection bar is positioned and moved is formed at one side, and a second selection unit to which an emergency power linkage link of the movable terminal unit is coupled; And a fixed shaft configured to foldably couple the first selection part and the second selection part such that the first selection bar guide groove and the second selection bar guide groove communicate with each other to form a selection bar guide groove. Switching selector of the power transfer switch. In the power transfer switch which is switched to the commercial, emergency or neutral state by the rotation of the control link shaft of the switching unit, A driving unit driven by the control link shaft to control the movable terminal unit and the fixed terminal unit to be in any one of a commercial power supply, an emergency power supply, or a neutral point state; A selection unit for converting the position of the drive link of the switching selector for the movable terminal unit to switch to any one of a commercial power supply, an emergency power supply, or a neutral point state; A selection switch unit for generating a driving force so that the selection unit can change the position of the drive link of the switching selector; A switching selector for independently performing open contact for commercial power supply or emergency power supply of the movable terminal unit when power is transmitted by the drive link selected by the selection unit; Switch selector switch of switchgear. The method of claim 2, wherein the driving unit, A connection link having one end rotatably coupled to the control link shaft and the other end rotatably coupled to an upper end of the drive bar; A lower end portion includes a driving bar rotatably fixed to one frame of an inner portion of the power transfer switch; A driving link having a selection bar coupled to the driving bar to select a first selection unit or a second selection unit of the switching selection port for independently driving a commercial power terminal or an emergency power terminal of a power switching switch; Switch selector switch of power switch. The method of claim 3, wherein the drive link is protruded from one side, the drive link is rotated about one end by the vertical movement of the selection portion so that the selection bar is the first selection bar guide groove or the second selection bar guide And a selection rod coupled with the selection unit to control the position of the drive link so as to be located in the groove. The method of claim 2, wherein the selection unit, A selector lever having a selector lever for manual operation is rotatably fixed, and a selector at which an upper end of a driving rod of the selector switch unit is rotatably coupled to a position of the central unit; A selection rod control link having a lower end rotatably coupled to the other end of the selector; One end portion is rotatably coupled to the drive bar, the upper end portion of the selection rod control link is rotatably coupled to one position of the center portion, the selection rod rotation bar formed with a selection rod guide groove is inserted into the other end of the selection rod; Switching selection switch unit of the power transfer switch characterized in that consisting of. The method according to any one of claims 2 to 5, A hooking part to fix the control link shaft to the driving part to maintain a commercial power supply or an emergency power supply state; The cross-sectional shape is semi-circular in order to release the fixing operation to the control link shaft of the hooking portion, the radial flat cross-section is located on the upper portion of the end of the hooking member and one end is attached to one side of the release bundle A release switch unit including a release shaft, a release switch having one end coupled to the release shaft, and a release switch coupled to the other end of the release lever to move the other end of the release lever back and forth; Switching selection switch unit of the power transfer switch characterized in that it further comprises. A switching unit installed at an inner side of the main body frame of the power switching switch; A switching selector switch unit of claim 2, coupled to the control link shaft of the switching unit and selectively controlling any one of commercial power supply, emergency power supply, and a neutral point state of the movable terminal unit; A movable terminal unit for maintaining a commercial power source, an emergency power source, and a neutral point state by the switching selector switch unit; And a fixed terminal unit for supplying commercial or emergency power to the load terminal through the movable terminal unit.

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