KR20100020182A - Moving electric connetion terminal shaft and moving electric connetion terminal part having a function of overlapping neutral terminal contact - Google Patents

Abstract

PURPOSE: A movable terminal body and a movable terminal part of the power source change-over switch are provided, which efficiently prevent malfunction and blocking of the load side facility. CONSTITUTION: A power source interworking link and a connector are connected to both sides of the N-phase contact unit. A rotating member is inserted into a contact unit cam fixing axis(451Z). The N-phase contact unit is rotated independently on the axis of the contact unit cam fixing axis. The power source interworking link and connector are connected to a plurality of contact unit cams of the other side to be rotatable. The contact unit cam fixing axis is axis-connected to the contact unit cam of the other side. An N-phase power source interworking link is connected to the location of the switching part of the N-phase contact unit to be rotatable.

Description

MOTORING ELECTRIC CONNETION TERMINAL SHAFT AND MOVING ELECTRIC CONNETION TERMINAL PART HAVING A FUNCTION OF OVERLAPPING NEUTRAL TERMINAL CONTACT}

The present invention relates to a power transfer switch, and more particularly, from the arc (ARC) generated during power transfer by maintaining a state in which the neutral contact overlaps for a predetermined time when power transfer is performed in the power transfer switch. The present invention relates to a movable terminal shaft portion and a movable terminal portion of a power transfer switch having a neutral contact overlap function to protect a power transfer switch and a load side facility.

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 is a view showing the movable terminal portion 400P of the power transfer switch 1 of the prior art.

As illustrated in FIG. 1, the power supply switching unit 1 according to the related art includes a contact body part according to a constant number of power sources. In the case of FIG. 1, a power supply has three phase power sources having R, S, T, and N phases. The first R-phase contact body portion 400Ra, the first S-phase contact body portion 400Sa, the first T-phase contact body portion 400Ta, and the first N-phase contact body for supplying commercial power to A first movable terminal shaft portion (x) having a fixed portion 400Na, a second R phase contact body portion 400Rb, a second S phase contact body portion 400Sb, and a second T phase contact for emergency power supply. The body portion 400Tb and the first N-phase contact body portion 400Nb are composed of a second movable terminal shaft portion y fixedly attached thereto.

The movable terminal part 1 of the power switching switch 1 according to the related art having the above-described configuration is configured to rotate the connection link 210 of the switching part by driving the pressing part 280a when an accident such as a short circuit or power failure of a commercial power source occurs. Accordingly, the power source from the commercial power source to the emergency power source is made by contacting the contacts attached to the first contact body parts of the movable terminal part 400P with the contacts of the emergency power supply fixed terminals of the fixed terminal part to supply emergency power. The switchover will be performed automatically.

However, as described above, when the power transfer switch of the related art automatically performs power switching, an arc ARC is generated between the contact terminal and the fixed terminal of the movable terminal 400P, and the arc ARC has a decay time. Since it is about 10 to 12 msec, current flows between the contact terminal and the fixed terminal of the movable terminal portion during this time, and then the current generated by the arc disappears at the zero point of the current.

In this case, the general three-phase auto transfer switch (ATS) has a structure in which the neutral contact (N phase) and the other three contacts (R, S, T three phases) are fixedly attached to the movable terminal shaft parts (x, y). Since the current sustained by the arc generated when switching power is not discharged through the N phase, the current may flow into the load side, and when the current flows into the load side, the equipment on the load side There is a problem that breakage or failure occurs.

In addition, the nonlinear load raises the potential of the earth and causes a potential difference between the earth and the neutral wire. Therefore, in the general ATS (Auto Transfer Switch), the neutral wire is separated from the load side when switching, so that the reference potential is not established. This can cause malfunction of electronic equipment.

Therefore, the present invention is to solve the above-mentioned problems of the prior art, the neutral terminal (N phase) of the fixed terminal portion and the movable terminal portion which is separated when the power switching is performed in the power switchgear and the open (OPEN) circuit is different Even after the contacts (contacts of phases other than N phase) remain open, the contact circuit (SHORT circuit) is maintained for a predetermined time to become an open circuit, thereby maintaining a constant voltage between the power supply phases of the power transfer switch. Discharge current caused by the arc generated between the contacts during neutral switching through the neutral contact to prevent the arc current from flowing to the load side, thereby preventing damage or malfunction of the equipment on the load side due to the inflow of the arc current. To provide a movable terminal shaft portion and a movable terminal portion of the power transfer switch having a neutral contact superimposition function .

First, in the present invention, the term "other phase" refers to a phase other than the neutral contact (N phase) in a power switch, and, for example, in a 4-wire power switch having a R, S, T, and N phase, R, S , Means T phase.

Hereinafter, the present invention for achieving the above object will be described.

In order to achieve the above object, the movable terminal shaft portion of the power transfer switch having a neutral contact overlapping function of the present invention comprises: a contact cam fixing shaft; An N-phase contact cam configured to be rotatably coupled to the power linkage link and the connector on both sides, and to be independently rotated about the contact cam fixed shaft via a rotating member on the contact cam fixed shaft; A plurality of other phases (power phases other than N phases) contact cams of which a power linkage link and a connector are rotatably coupled at both sides, and the contact cam fixed shafts are axially coupled; An N-phase power linkage linkage rotatably coupled to a position of the switch-side portion of the N-phase contact portion; Characterized in that it consists of; a linkage power linkage rotatably coupled to the position of the switch side of any one of the wound injury contact cam.

The N-phase and other-phase contact cams have a connector coupling hole, a power link linking hole, and a contact cam fixing shaft hole formed in a triangular shape, and the contact cam fixed shaft coupled to the contact cam fixing shaft hole when the power link is moved back and forth. Configured to rotate.

At this time, the other phase (non-N phase) contact cams are fixed to the contact cam fixed shaft is configured to rotate together with the contact cam fixed shaft, or all the other wound contact cams are bearings on the contact cam fixed shaft It may be configured to be rotated independently of the contact cam fixing shaft by the shaft coupled through the rotating member of the contact cam fixed shaft as the axis.

The movable terminal shaft of the present invention having the above-described configuration allows the N-phase contact cam to be rotatable by a rotating member such as a bearing on the contact cam fixed shaft, thereby allowing power to be rotated with a parallax or a different rotation distance from the other contact contact cam. In the contact body portion formed in the movable terminal portion of the machine to control the parallax of the contact between the other contact body parts and the fixed terminal portion of the N-phase contact body parts.

Next, the movable terminal portion of the power transfer switch having a neutral contact superimposition function of the present invention for achieving the above object, the control link shaft hole is coupled to one end of the control link shaft of the circular switching machine to be able to flow at regular intervals A neutral (N-phase) contact drive bar formed and rotatably fixed at a fixed point; A control link shaft hole having a control link shaft coupled to the control link shaft of the cutaway switch to be able to flow at a predetermined interval, and the other phase (non-N phase) contact drive bar rotatably fixed at a fixed point; One end of the N-phase power link is coupled to each position having a predetermined interval (referred to as "N-phase power link link interval") to both sides of the fixed point of the neutral contact drive bar, First and second movable terminal shaft portions having one end of the other phase power linkage link coupled at each position having an interval greater than the N-phase power linkage link coupling intervals (other phase power linkage link spacing) on both sides of the fixed point; It is characterized by.

In the above-described configuration, the neutral contact driving bar (N-phase driving bar) has a control link shaft hole in which the control link shaft is coupled to be movable by a predetermined distance at an N-phase side position of the control link shaft of a switching unit, and is used for commercial and emergency purposes. The first and second N-phase power link linking holes to which the respective N-phase power linkage links of the first and first movable terminal shafts for power supply are coupled are fixed at a predetermined interval from both sides of the fixed point. And a fixed point pin hole is formed in the center of the first and second N-phase power linkage linking holes so as to be rotatably fixed to the inner frame of the power switch by the fixed point pin hole.

Next, the bruising drive bar is formed with a control link shaft hole in which the control link shaft is coupled to the control link shaft in a position on the other side of the control link shaft of the switching unit by a predetermined distance, the first and the first for commercial and emergency power supply 2 The first and second other phase power interlocking link coupling holes to which the respective other phase power interlocking links of the movable terminal shaft are coupled are spaced apart from each other at the fixed point (the phase of the interphase power interlocking link coupling) from the sides of the fixed point. It is formed to have, and the fixed point pin hole is formed in the center of the first and second bruise power linkage hole is configured to be rotatably fixed to the inner frame of the power switch by the fixed point pin ball.

In addition, the movable terminal unit, and the connector is one end is rotatably coupled to the position of the fixed terminal portion side of the N-phase and the other contact portion cams; And a contact body portion rotatably coupled to each end of the connector.

Here, the contact body portion, the contact body portion is configured to further include a contact that is rotatably coupled through the elastic member at a position in contact with the contact of the fixed terminal portion of the contact body portion, the contact of the contact body portion when switching power is the contact of the fixed terminal portion When it is spaced apart from the contact by the contact portion of the contact body portion by the elastic force of the elastic member to the fixed terminal portion side by protruding to the fixed terminal portion side characterized in that to maintain the contact with the contact point of the fixed terminal portion for a predetermined time.

In the above-described configuration of the movable terminal portion, since the first and second movable terminal shaft portions have the same configuration as the movable terminal shaft portion of the present invention, detailed description thereof will be omitted.

Hereinafter, the operation process of the movable terminal unit of the present invention having the above-described configuration.

First, in order to identify the operation process of the movable terminal unit of the present invention, each component of the first movable terminal shaft portion is added with 'first' in front of it, and 'second' is placed in front of each component of the second movable terminal shaft portion. In addition, it demonstrates.

The movable terminal portion of the power transfer switch of the present invention having the above-described configuration, each of the first and second N-phase contact cams provided in the first and first movable terminal shaft portion is the first and second N-phase contact cam fixed shaft N-phase of the first and second N-phase power interlocking links of the first and second N-phase power linkages that are rotatably coupled by a bearing and the like, and that the coupling phases of the first and second other phase power-linking links coupled to the contact-point driving bar are coupled to the neutral contact-drive bar. By making it larger than the coupling interval, the movement distance of each of the 1st and 2nd N-phase power linkages at the time of power switching becomes smaller than the movement distance of each of the 1st and 2nd other phase power linkages.

Accordingly, the rotation distance between the first contact cam fixed shaft and the second contact cam fixed shaft rotated by the other phase power linkage is fixed by the first contact cam fixed shaft and the second contact cam fixed by the first and second N-phase power linkage links. The rotational distance of the first and second N-phase contact bodies coupled to the first and second N-phase contact cams is greater than the rotational distance of the first and second N-phase contact cams rotated on the shaft. It becomes smaller than the rotational movement distance of a 1st and 2nd bruise contact body part.

Therefore, when the contact body portion is separated from the fixed terminal portion, the angular velocity of the first and second bruised contact body portions becomes larger than the separation angular velocity of the first and second N-phase contact body portions, and thus the rotation distance in the same time interval is increased. Accordingly, the contact of the bruising contact body is separated before the contact of the N-phase contact body between the time intervals at which the contact pressurized to the fixed terminal part side via the elastic member via the elastic member is moved to the fixed end side by the elastic member. Since the N-phase contact of the terminal portion protrudes toward the fixed terminal portion by the elastic member, the first and second N-phase contacts remain in the protruding time by the elastic member even after the other contact of the movable terminal portion is separated from the other phase of the fixed terminal portion. It is separated after it is kept in contact with the N-phase contact of the fixed terminal part.

On the contrary, when the contact of the movable terminal portion is in contact with the contact of the fixed terminal portion, the first and second N-phase contacts are first contacted with the first and second N-phase contacts of the fixed terminal portion, and then the first movable terminal shaft portion and the second movable portion are contacted. The first and second bruising contacts of the terminal shaft portion come into contact with the first and second bruising contacts of the fixed terminal portion.

Therefore, when the power is switched, the N-phase contact of the movable terminal portion is in the state of overlapping the N-phase, which is in contact with the N-phase contact of the fixed terminal portion, thereby eliminating the current caused by the arc generated at the other phase contact.

It is apparent that the above-described movable terminal shaft portion and the movable terminal portion of the present invention can be applied not only to an automatic power switching switch, but also to various power switching and power circuit breakers that perform switching or breaking of commercial and emergency power, such as an air circuit breaker.

The movable terminal shaft portion and the movable terminal portion of the power switching switch of the present invention having the above-described configuration are separated from the N-phase contacts of the movable terminal portion when the movable terminal portion and the fixed terminal portion are separated for power switching. In this case, the other terminal contact point of the movable terminal section should be separated later than the other terminal contacts of the fixed terminal section.When contacting the movable terminal section and the fixed terminal section for power switching, the N-phase contact point of the movable terminal section and the N-phase contact point of the fixed terminal section are When the other contact point of the movable terminal part and the other contact point of the fixed terminal part are contacted before contact, the power switching switch has a neutral contact overlapping state, so that the arc generated between the contacts of the movable terminal part and the contacts of the fixed terminal part By removing the current caused by the current and preventing the overcurrent caused by the arc from flowing to the load side, It provides an effect that allows you to effectively prevent the sheets and failure.

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

For example, the power switching switch is a four-wire type having R, S, T, and N phases, and the term "other phase" in the description of the present invention refers to a neutral contact (N phase) in the power switching switch. Meaning other phase except), means the R, S, T phase of the R, S, T, N phase.

Figure 2 is a perspective view showing the internal configuration of a power switching switch having a movable terminal shaft portion of the present invention, Figure 3 is a perspective view of the movable terminal shaft portion according to an embodiment of the present invention, 4 is the power transfer switch (1) of Figure 2 5 is an exploded perspective view showing a coupling state of the switching unit A and the movable terminal unit according to the present invention, and FIG. 5 is a view of the switching unit A and the movable terminal unit 400 of the power transfer switch 1 of FIG. 4. An internal perspective view showing a coupled state.

As shown in FIG. 2, the power transfer switch 1 including the movable terminal shaft of the present invention is provided between the first and second frames 3a and 3b vertically installed inside the main body frame 2. Switching portion (A) for generating a driving force for switching the power supply of the movable terminal portion is provided, the movable terminal portion via the neutral contact drive bar (300a) and the other phase contact drive bar (300b) on both sides of the switch (A), respectively 400 has a structure coupled to the switch.

3 is a perspective view of the movable terminal shaft portion Z, and shows the movable terminal shaft portion Z applied to the four-wire power supply switchgear 1 of R, S, T, and N phases.

First, referring to Figures 3 to 5 the movable terminal shaft of the present invention will be described.

As shown in Figs. 3 to 5, the movable terminal shaft portion Z is composed of a bruise contact cam 450Z, an N-phase contact cam 450NZ, and a contact cam fixed shaft 451Z.

First, the bruising contact cam 450Z is provided with contact cams for the R, S, and T phases in the case of the 4-wire type. The bruising contact cam 450Z provided as described above is a bruising connector coupling hole 452Z to which the bruising connector 440Z coupled to the R, S, and T phase bruising contact body parts 400Z is coupled, and will be described below. The other-phase power linkage linking hole (453Z) to which the other-power linkage link (320a, 320b) of the movable terminal unit 400 is coupled to the other-contact contact cam-fixed hole (454Z) to which the contact cam fixing shaft (451Z) is axially coupled in a triangle. It is formed to be arranged, the fixed terminal (810Ra ~ 810Ta, etc.) of the fixed terminal portion 800 (see Fig. 5) of the phases in the contact cam fixing shaft 451Z through which the bruising contact cams 450Z pass through the bruising contact cam fixing shaft hole 454Z. ) To face. At this time, the other wound contact cam (450Z) is fixed to be rotated together when the contact cam fixed shaft (451Z) is rotated, otherwise the contact portion via a rotating member such as bearing (455NZ), such as N-phase contact cam (450NZ) It may be coupled to rotate independently about the cam fixing shaft (451Z).

And the N-phase contact cam 450Z is an N-phase connector coupling hole 452NZ to which the N-phase connector 440NZ coupled with the N-phase contact body portion 400NZ and N of the movable terminal unit 400 to be described below. The N-phase power link linking holes 453NZ to which the phase power linkages 310a and 310b are coupled and the N-phase contact cam fixation hole 454NZ to which the contact cam fixing shaft 451Z is axially coupled are arranged in a triangle. N phase fixed terminals 810Na and 820Nb of the fixed terminal portion 800 (see FIG. 5) in the contact cam fixed shaft 451Z through which the N-phase contact cam 450Z passes through the N-phase contact cam fixed shaft hole 454NZ. 5) and is coupled to the contact cam fixing shaft 451Z via a rotating member 455Z such as a bearing so as to be rotated on the contact cam fixing shaft 451Z.

Next, the contact cam fixing shaft 451Z passes through the other contacting cam fixing shaft hole 453Z and the N-phase contact cam fixing shaft 453NZ of the wound and N-phase contact cams 450Z and 450NZ. After placing the cams 450Z and 450NZ at the positions of the respective fixed terminals, the wound contact cams 450Z are fixedly coupled to the contact cam fixing shaft 451Z to rotate together with the contact cam fixing shaft 451Z. , The N-phase contact cam 450NZ is rotated only by the neutral contact drive bar (N-phase drive bar) 300a in a state of being separated from the contact cam fixed shaft 451Z by being coupled through a rotating member such as a bearing 455Z. It is configured to be.

The above-mentioned movable terminal shaft portion Z is connected to the other-phase contact body portion 400Z and the N-phase contact body portion 400NZ by the connector 400Z. At this time, the other phase contact body portion 400Z and the other phase connector 440Z may be configured by three for R, S, and T phases in the case of the 4-wire type, but in the case of the 2-wire type according to the method of the power transfer switch, 1, 3 In the case of the wire type, two may be configured, and the number may vary depending on the number of power phases.

In the above-described configuration, the other contact body portion 400Z and the N-phase contact body portion 400NZ have the same configuration in which the other phase contact 410Z and the N-phase contact 410NZ are in contact with the phase-specific contact of the fixed terminal portion 800. Has At this time, the other phase contact 410Z and the N-phase contact 410NZ have a predetermined clearance between the contact body parts 400Z and 400NZ, and the elastic member 411 has the other phase contact 410Z and the N-phase contact in the space having the clearance. 410NZ is provided to push the fixed terminal portion side, when the other and the N-phase contact body portion (400Z, 400NZ) is in contact with or separated from the fixed terminal portion 800, the other phase contact (410Z) and N-phase contact (410NZ) In addition to performing elastic contact, when the contact with the elastic force protrudes toward the fixed terminal side, when the bruise and N-phase contact body parts 400Z and 400Nz start to be separated from the fixed terminal part, the contact state is maintained for a predetermined time interval, And when the N-phase contact body portion (400Z, 400Nz) is in contact with the fixed terminal portion, the other terminal and the N-phase contacts before the stop point after moving for contact of the other phase and the N-phase contact body portion (400Z, 440NZ) fixed terminal portion Contact with (800) contact The.

Next, the bruise connector 440Z is rotatably coupled to one end of the bruise contact body portion 400Z, and the other end is rotatably coupled to the bruise connector coupling hole 452Z of the bruise contact portion cam 450Z. It has a structure. The N-phase connector 440NZ is rotatably coupled to one end of the N-phase contact body portion 400ZN, and the other end is also rotatably coupled to the N-phase connector coupling hole 452NZ of the N-phase contact cam 450NZ. do.

Next, referring to Figures 4 and 5 according to the embodiment of the present invention according to the movable terminal 400, the coupled state of the movable terminal 400 and the switching unit (A) and the arc of the movable terminal 400 The operation process for the neutral contact overlapping function to prevent the failure and failure of the load facility is explained.

The movable terminal shaft portion Z of FIG. 3 includes a first movable terminal shaft portion X for controlling the commercial power supply and a second movable terminal shaft portion Y for controlling the emergency power supply in FIGS. 4 and 5. In this case, the first movable terminal shaft portion X and the second movable terminal shaft portion Y have the same configuration and have a structure in which only the directions thereof are inverted up and down.

In the description of FIGS. 4 and 5, the respective components of the first movable terminal shaft portion X and the second movable terminal shaft portion Y are denoted by 'first' and 'second' in front of each component name of FIG. 3 for identification. Each of the additional names is used, and the first movable terminal shaft portion X and the second movable terminal shaft portion Y in each of the R, S, and T phases of the bruising contact body portion 440Z of FIG. 4 and FIG. In the case of consisting of, the names and reference numerals in FIG. 4 for the respective components of FIG. 3 are as follows.

The bruising contact body part 400Z and the N-phase contact body part 400NZ of FIG. 3 are formed in the first movable terminal shaft part X by the first R phase, the first S phase, the first T phase, and the first N phase. Contact body portions 400Ra, 400Sa, 400Ta, 400Na, and in the second movable terminal shaft portion Y, the second R phase, the second S phase, the second T phase, and the second N phase contact body portion 400Rb. , 400Sb, 400Tb, 400Nb).

The other phase connector 440Z and the N-phase connector 440NZ of FIG. 3 have a first R phase, a first S phase, a first T phase, and a first N phase connector 440Ra, phase by phase, in the first movable terminal shaft portion X. 440Sa, 440Ta, and 440Na), and in the second movable terminal shaft portion Y, the second R phase, the second S phase, the second T phase, and the second N phase connectors 440Rb, 440Sb, 440Tb, and 440Nb are formed for each phase. do.

The other-phase contact cam 450Z and the N-phase contact cam 450NZ of FIG. 3 are each of the first R-phase, the first S-phase, the first T-phase, and the first N-phase contact cam of each phase in the first movable terminal shaft portion X. FIG. (450Ra, 450Sa, 450Ta, 450Na), and in the second movable terminal shaft portion Y, the second R phase, the second S phase, the second T phase, and the second N phase contact cams 450Rb, 450Sb, and 450Tb for each phase. , 450Nb).

The other phase connector coupling hole 452Z and the N phase connector coupling hole 452NZ of FIG. 3 are formed in the first movable terminal shaft part X by the first R phase, the first S phase, the first T phase, and the first N phase. Connector coupling holes 452Ra, 452Sa, 452Ta, and 452Na, and in the second movable terminal shaft portion Y, the second R phase, the second S phase, the second T phase, and the second N phase connector coupling hole 452Rb. , 452Sb, 452Tb, and 452Nb).

The other phase power interlocking link coupling hole 453Z and the N phase power interlocking link coupling hole 453NZ of FIG. 3 are formed in the first movable terminal shaft portion X by the first R phase, the first S phase, the first T phase, The first N-phase power link linking holes (453Ra, 453Sa, 453Ta, 453Na), and in the second movable terminal shaft portion (Y), the second R phase, the second S phase, the second T phase, the second N Phase power link linking holes 453Rb, 453Sb, 453Tb, and 453Nb.

The contact cam fixing shaft 451Z in FIG. 3 becomes the first contact cam fixing shaft 451a in the first movable terminal shaft portion X, and the second contact cam fixing shaft 451b in the second movable terminal shaft portion Y. Becomes

The other phase contact 410Z and the N-phase contact 410Nz of FIG. 3 are each of the first R-phase, the first S-phase, the first T-phase, and the first N-phase contact 410Ra in the first movable terminal shaft portion X. 410Sa, 410Ta, and 410NZ, and in the second movable terminal shaft portion Y, the second R phase, the second S phase, the second T phase, and the second N phase contacts 410Rb, 410Sb, 410Tb, and 410Nb are do.

4 and 5, the movable terminal 400 according to an embodiment of the present invention, one end of the first control link shaft 231a of the switching unit A is coupled to be able to flow up and down at regular intervals. A neutral contact drive bar (N-phase drive bar) 300a having a fixed point pin hole 304a fixedly rotatable in a central position; The end of the second control link shaft 231b of the switching unit A is coupled to the other side in a fixed distance, and the slicing contact drive bar (fixing drive bar) is formed with a fixed point pin hole 304b fixedly rotatable at a central position. 300b; First and second N-phase power linkages 310a at respective positions having a predetermined distance (referred to as "N-phase power linkage linkage spacing") on both sides of the fixed point pin hole 304a of the neutral contact drive bar 300a. , One end of the 310b is coupled to each other, and the N-phase power linkage intervals of the first and second N-phase power linkages 310a and 310b to both sides of the fixed point pin hole 304b of the other contact driving bar 300b. First and second movable terminal shaft portions (X, Y) to which one ends of the first and second other power supply linkages (320a, 320b) are respectively coupled at respective positions having a larger distance (the other power supply linkage intervals); Characterized in that consists of. Here, the first and second control link shafts 231a and 231b configured in the switching unit A may be configured as one control link shaft 231.

In this case, as described with reference to FIG. 3, the other ends of the first and second N-phase power interlocking links 310a and 310b of the first and second movable terminal shaft portions X and Y may be formed by the first and second contact cams. It is coupled to the first and second N-phase contact cam (450Na, 450Nb) rotatably coupled to the fixed shaft (451a, 451b), the other end of the first and second other phase power linkage (320a, 320b) One bruising contact cam 450Ra at the same position as any one of the first and second bruising contact cams 450Ra, 450Sa, and 450Ta fixedly coupled to the first and second contact cam fixing shafts 451a and 451b. , 450Sa, any one of 450Ta) is rotatably coupled.

In addition, the neutral contact drive bar (N-phase drive bar) 300a of the above-described configuration of the movable terminal unit 400 is the first control link at the N-phase side of the first control link shaft 231a of the switching unit A. A first control link shaft hole 301a is formed to which the shaft 231a is movably coupled by a predetermined distance, and below and the first and second N-phase power linkages 310a and 310b for supplying commercial and emergency power. The first and second N-phase power link linking holes 302a and 303a to which the first and second N-phase power link linking holes 302a and 303a to which the first and second N-phase power link linking holes 302a and 303a are coupled are formed. The driving bar (N-phase driving bar) 300a has a structure in which the N-phase driving bar coupling hole 304a is rotatably fixed.

The second drive link bar 300b includes: a second control link shaft hole in which the second control link shaft 231b is movably coupled to the other side of the second control link shaft 231b of the switching unit A by a predetermined distance. 301b is formed, and the first and second other phase power linkage linking holes 302b and 303b to which the first and second other phase power linkages 320a and 320b for commercial and emergency power supply are coupled. The first and second N-phase power interlocking link coupling holes (302a, 303a) is formed to have a larger interval than the gap between the first and second bruise power link linking holes (302b, 303b) in the center of the wound The driving bar 300b has a structure in which a bruising drive bar coupling hole 304b to which the driving bar 300b is rotatably fixed is formed.

Next, the first and second bruising contact body portions 400Ra, 400Sa, 400Ta, 400Rb, 400Sb, 400Tb and the first and second N-phase contact body portions of the first and second movable terminal shaft portions X and Y. The 400Na and 400Nb are rotatably coupled to the movable body support 500 of the movable terminal 400 corresponding to each other, and the first bruise contact body portions 400Ra, 400Sa and 400Ta correspond to each other. The corresponding fixed terminal contact of the fixed terminal portion 800 and the power connection line 420 are respectively provided at the contacts of the two contingency contact body portions 400Rb, 400Sb, and 400Tb, and the first and second N-phase contact body portions 400Na and 400Nb. Is connected by, the commercial or emergency power is transferred to the load terminal 830 of the fixed terminal portion 800 through the power connection line 420 from the first or second wound contact body portion of the movable terminal portion 400 It is configured to be.

The first and second contact body parts 400a and 400b are connected to the first contact cam fixing shaft 451a and the second contact cam fixing shaft 451b by the first connector 440 and the second connector 440a. It is connected to the first contact cam 450 and the second contact cam 450a coupled to each other, and the first power link 120 and the second power link 120a to the first and second contact cams 450 and 450a. ) Is pin coupled. Here, the first and second contact cams 450 and 450a are coupled to the first and second contact cam fixing shafts 451a and 451b to transmit power transmitted from the first and second power linkages 460a and 460b. And two connectors 440 and 440a.

Next, as shown in FIGS. 4 and 5, the switching unit A of the configuration of the power transfer switch 1 of FIG. 2 is generated by the rotation control unit C of which the control link shaft 231a is shown in FIG. 3. It is provided in pairs symmetrically on both sides of the rotation control unit (C) in order to transmit and rotate the driving force for switching the power supply to the neutral contact drive bar (300a) and the other contact point drive bar (300b) of the movable terminal 400 The first control link unit Ba (including the first frame 3a, the first control link 230a, the first control link shaft 231a, the first induction link 232a, and the fixed shaft 234) A second control link unit (Bb) including a second frame (3b), a second control link (230b), a second control link shaft (231b), a second guide link (232b), and a fixed shaft (234)); Including a rotation control unit (C) for generating power for rotating the first control link shaft 231a of the first control link unit (Ba) and the second control link shaft (231b) of the second control link unit (Bb). It is composed.

The first control link unit Ba and the second control link unit Bb may be configured such that the first and second control link shafts 231a and 231b rotate about the fixed shaft 234 within a predetermined angle range, respectively. First and second guide slots 221a and 221b formed in the first frame 3a and the second frame 3b to induce rotation of each of the first and second control link shafts 231a and 231b. ; Rotatably coupled through the first frame 3a and the second frame 3b, and the upper ends of each of the first and second elastic members 281a and 281b of the rotation control unit C rotatably coupled thereto. First and second control link shafts (231a, 231b) coupled through the first and second guide slots (221a, 221b), respectively; A fixed shaft 234 fixed to the first frame 3a and the second frame 3b in parallel with the control link shaft 231a; One end is coupled to the control link shaft 231a together with the upper end of the elastic member 281a of the rotation control unit C, and the other end is first and second control links 230a rotatably coupled to the fixed shaft 234. 230b); One end is coupled to the fixed shaft 234 together with the first and second control links 230a and 230b, and the other end is coupled to both ends of the coupling shaft 235 of the rotation control unit C, respectively. The first control link unit B and the second control link unit Bb having the above-described configuration, including the links 232a and 232b, have the first frame 3a and the second of the switching unit A. They are respectively installed in the frame 3b, and are installed in the power switching switch 1 so as to have symmetrical structures on both sides of the rotation control unit C.

The first frame 3a is a main body frame 2 at a position where the first and second N-phase contact cams 450Na and 450Nb are positioned among the movable terminal shaft portions X and Y provided in the power switching switch 1. It is fixed to the fixed shaft 234 is fixed to the first frame (3a) so as to be parallel to the movable terminal shaft (X, Y), the first in an arc shape having a predetermined angle around the fixed shaft 234 The guide slot 221a is formed. Referring to the coupling state of the switching unit (A) in the first frame having the above-described structure, the first control link shaft (231a) in the first guide slot (221a) to move along the first guide slot (221a) The end of the first control link shaft 231a, which is inserted and protrudes through the first guide slot 221a of the first frame 3a, has a neutral contact drive bar (N-phase driving). Bar) 300a is fitted into the first control link shaft hole (301a).

In addition, the second frame 3b includes first first contacting cams 450Ra, 450Sa, and 450Ta and second second contacting cams 450Rb and 450Sb of the movable terminal shaft parts X and Y provided in the power switching switch 1. , 450Tb is fixedly installed on the body frame 2 at the position where any one of the second mating contact cams is positioned, and the fixed shaft 234 is parallel to the movable terminal shaft portions X and Y to form the second frame 3b. ), And has a structure in which a second guide slot 221b is formed in an arc shape having a predetermined angle about the fixed shaft 234. Referring to the coupling state of the switching unit A in the second frame (3b) having the above-described structure, the second control link shaft (2) to move along the second guide slot (221b) in the second guide slot (221b) 231b is fitted, and an end portion projecting through the second guide slot 221b of the second frame 3b of the second control link shaft 231b is formed on the second control link shaft hole of the other contact point driving bar 300b. 301b).

Next, the rotation control unit (C) of the configuration of the switching unit (A) described above, the first and second control links (230, 230a) around the fixed shaft 234, the first and second guide slots (221a, First and second pressing portions 280a and 280b for providing elastic force to the first and second control links 230 and 230a so as to be moved to any one of the ends of 221b; And a movement control unit (D) for moving the two control link shafts (231b, 231b) from one end of each of the first and second guide slots (221a, 221b) to the other end.

In the above-described configuration, the first and second pressurizing portions 280a and 280b respectively include first and second pivotal links 282a having one end rotatably coupled to the support frame 3c; The length thereof is configured to be variable so that one end is coupled to the first and second pivotal links 282a, respectively, and the other end is rotatably coupled to the first and second control link shafts 231b and 231b, respectively. First and second elastic members 281a and 281b that push each of the second control link shafts 231a and 231b, wherein each of the first and second elastic members 281a and 281b is a coil spring. The first and second pivotal links 282a and 282b are engaged with the first and second pivotal links 282a and 282b, respectively, and the first and second pivotal links 282a and 282b are respectively the first and the second pivotal links 282a and 282b. The support frame 3c is hinged so as to smoothly rotate by the movement of the second control link shafts 231a and 231b, so that the first and second pressurizing portions 280a and 280b are moved control units D, respectively. It is installed to form a symmetrical structure on both sides of the.

In the movement control unit D, the first control link shafts 231a and 231b are respectively opposite one end of the guide slot along the first and second guide slots 221a and 221b about the fixed shaft 234. As to perform an operation to rotate to the end, the first and second hooking links (240a, 240b), the rotating link portion (E; cam link 250, the second support link 260, the first support link 270) ) And the rotating part 290 is configured.

In the above-described configuration of the movement control unit (D), the first and second hooking links (240a, 240b) provided on both sides of the rotation link unit (E) and the cam link 250 of the rotation link unit (E) at the center It is rotatably coupled to the fixed shaft 234, the upper portion is rotatably coupled with the cam link 250 by the coupling shaft 235, the lower and the first and second control link shafts (231a, 231b) And a pair of first and second hooking protrusion pairs 241a and 241b respectively formed to be caught.

Next, the rotation link unit E rotates each of the first second hooking links 240a and 240b about the fixed shaft 234 so that the pair of first and second hooking protrusion pairs 241a and 241b are rotated. In order to rotate the first and second hooking links 240a and 240b to rotate the first and second control link shafts 231a and 231b respectively, the support frame 3c is provided by the hinge member 271. ) Of the first support link 270 rotatably installed on one end, a second support link 260 rotatably coupled to the other end of the first support link 270, and a second support link 260. Pin guide slots 251 into which the link pin 261 coupled to the other end is inserted are formed, and the first and second hooking links 240a and 240b are coupled by the fixed shaft 234 and the coupling shaft 235 on both sides. And a cam link 250 which rotates according to the vertical movement of the second support link 260 to rotate the first and second hooking links 240a and 240b.

Next, the pivot 290 is configured to rotate the first support link 270 about the hinge member 271, as shown in Figures 3 to 5, 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 pressurizing device 292 of the rotation control unit C is configured such that the first and second control link shafts 231a and 231b are rotated about the fixed shaft 234, such as a motor other than a solenoid. Various configurations can be applied. In addition, the rotation control unit C is configured to rotate the first and second control link shafts 231a and 231b so that a user can manually move the first and second control link shafts 231a and 231b. The lever fixing portion 321 to which the lever is coupled may be separately installed. In FIG. 2, when the lever fixing part 321 is rotated by a separate lever 322 inserted into the lever fixing part 321, the moving control part D rotates about the fixed shaft 234. ) Is configured with the connection. In addition, the first and second control link shafts 231a and 231b of the rotation control unit C may be configured as a single control link shaft, and may be configured as the first and second frames 1a and 3b, respectively. Both end portions penetrating through the second guide slots 221a and 221b to protrude outward may be the first and second control link shafts 231a and 231b, respectively.

Hereinafter, the coupling relationship and the operation relationship between the above-mentioned movable terminal 400 and the switching unit A will be described.

Switching portion (A) having the above-described configuration is the end of the first control link shaft (231a) of the switching portion (A) of the first and second N-phase contact cam for the control of the neutral contact in the movable terminal 400 ( 450Na, 450Nb) is inserted into the first control link shaft hole 301a of the neutral contact driving bar 300a provided at the position where the 450Na and 450Nb are positioned to be coupled with the neutral contact driving bar (N-phase driving bar) 300a, and the switching unit ( An end portion of the second control link shaft 231b of A) is the one of the first bruise contact cam (450Ra, 450Sa, 450Ta) and the second bruise contact cam (450Rb, 450Sb, 450Tb) is located. Inserted into the second control link shaft hole (301b) of the other contact point driving bar (300b) provided in the position is coupled to the other contact point driving bar (300b) driving force for power switching of the switching unit (A) 400 To provide. The movable terminal unit 400 performs power switching by rotating the first and second movable terminal shaft units X and Y by the driving force provided from the switching unit A. FIG.

The first and second N-phase contact cams 450Na and 450Nb are rotatably coupled to the first and second N-phase contact cam fixed shafts 451a and 451b by bearings, and the like, thereby allowing the first and second N-phase contact cams 450Na and 450Nb to rotate. The N-phase contact cams 450Na and 450Nb are freely rotated with respect to the first and second movable terminal shaft portions X and Y, respectively.

In addition, the coupling phase between the coupling of the power supply linking of the first and second coupling phases 320a and 320b of the first and second N-phase power linking links 310a and 320b is the first and second N-phase power linkages 310a and 310b. Since the distance between the N-phase power link link is coupled to the neutral contact drive bar 300a of the first and second N-phase power link link (310a, 310b), the moving distance of each other power link link (320a, 320b) smaller than each movement distance. Accordingly, the rotational distance between the first contact cam fixing shaft 451a and the second contact cam fixing shaft 451b rotated by the other phase power linking links 320a and 230b is set to the first and second N-phase power linking links 310a. , 310b) is greater than the rotation distance of each of the first and second N-phase contact cams 450Na and 450Nb rotated on the first contact cam fixing shaft 451a and the second contact cam fixing shaft 451b.

Therefore, the rotation distances of the first and second N-phase contact body portions 400Na and 400Nb coupled to the first and second N-phase contact cams 450Na and 450Nb are the first and second bruise contact body portions (in FIG. 3). 400Z) is smaller than the rotation distance.

As described above, the N-phase contact is changed when the power is switched by an operation according to the difference in the coupling interval between the first and second N-phase power linkages 310a and 310b and the first and second other-phase power linkages 310b and 310b. The overlapping state will be described below.

First, when the contact of the movable terminal unit 400 is separated from the contact of the fixed terminal unit, the other phase contact 410Z of the movable terminal unit 400 is separated from the other terminal contact of the fixed terminal unit, and the first and the first terminals of the movable terminal unit 400 are separated. Since the second N-phase contacts 410Na and 410Nb protrude toward the fixed terminal portion by the elastic member 411, the second N-phase contacts 410Na and 410Nb protrude for a predetermined period of time even after the other terminal contact 410Z of the movable terminal 400 is separated from the other terminal contacts of the fixed terminal portion. The first and second N-phase contacts (410Na, 410Nb in FIGS. 4 and 5, and 410NZ in FIG. 3) are separated after maintaining contact with the first and second N-phase contacts of the fixed terminal portion.

On the contrary, when the contact of the movable terminal 400 is in contact with the contact of the fixed terminal, the first and second N-phase contacts 410Na and 410Nb are first contacted with the first and second N-phase contacts of the fixed terminal. The first and second bruising contacts (410Z in FIG. 3) of the first movable terminal shaft part X and the second movable terminal shaft part Y come into contact with the first and second bruising contacts of the fixed terminal part.

Therefore, the N-phase contact (FIG. 3, 410NZ) of the movable terminal part at the time of switching power supply is in the N-phase overlapping state which is in contact with the N-phase contact of the fixed terminal part at the same time. Will be removed.

In the above description, Figure 6 shows a state in which the N-phase contact is in contact with the contact of the fixed terminal portion after the other phase (R, S, T phase, etc.) contact is separated from the contact of the fixed terminal portion when switching power in the movable terminal portion of the present invention It is a figure which shows.

In FIG. 6, the power transfer switch of the present invention provides an N-phase overlapping state in which the N-phase contact remains in contact even after the other phase contact is separated.

1 is a view showing a state in which the switching unit (A) and the selector switch unit (F) and the movable terminal unit 400 of the prior art are coupled in the power switch.

Figure 2 is a perspective view showing the internal configuration of a power switching switch having a movable terminal shaft portion according to an embodiment of the present invention;

3 is a perspective view of a movable terminal shaft portion according to an embodiment of the present invention;

Figure 4 is an exploded perspective view showing a coupling state of the switching unit (A) configured in the power switching switch 1 of Figure 2 and the movable terminal unit according to the present invention,

5 is a perspective view illustrating a combined state of the switching unit A and the movable terminal 400 in the power switch 1 of FIG.

6 is a view showing a state in which the N-phase contact is in contact with the contact of the fixed terminal portion even after the other phase (R, S, T phase, etc.) contact is separated from the contact of the fixed terminal portion when switching power in the movable terminal portion of the present invention.

Description of the main symbols in the drawings

Z: movable terminal shaft part A: switching part

X: 1st movable terminal shaft part Y: 2nd movable terminal shaft part

400: movable terminal part

400Z: contact body part

400Ra, 400Sa, 400Ta, 400Na: 1st R phase, 1st S phase, 1st T phase, 1st N phase contact body part

400Rb, 400Sb, 400Tb, 400Nb: 2nd R phase, 2nd S phase, 2nd T phase, 2nd N phase contact body part

440Z: bruise connector 440NZ: N-phase connector

440Ra, 440Sa, 440Ta, 440Na: 1st R phase, 1st S phase, 1st T phase, 1st N phase connector

440Rb, 440Sb, 440Tb, 440Nb: The second R phase, the second S phase, the second T phase, and the second N phase connector

450Z, 450NZ: bruise contact cam, N-phase contact cam

450Ra, 450Sa, 450Ta, 450Na: 1st R phase, 1st S phase, 1st T phase, 1N phase contact cam

450Rb, 450Sb, 450Tb, 450Nb: second R phase, second S phase, second T phase, second N phase contact cam

452Z: Coupling Connector for Other Phases 452NZ: Coupling Connector for N Phase

452Ra, 452Sa, 452Ta, 452Na: 1st R phase, 1st S phase, 1st T phase, 1st N phase connector coupling hole

452Rb, 452Sb, 452Tb, 452Nb: second R phase, second S phase, second T phase, second N phase connector coupling hole

453Z, 453NZ: Other phase power linkage hole, N phase power linkage hole

453Ra, 453Sa, 453Ta, 453Na: 1 R phase, 1 S phase, 1 T phase, 1 N phase power supply link coupling hole

453Rb, 453Sb, 453Tb, 453Nb: second R phase, second S phase, second T phase, second N phase power interlocking link coupling hole

451Z: fixed contact cam

451a, 451b: first contact cam fixed shaft, second contact cam fixed shaft

410Z, 410NZ: Other phase contact, N phase contact

410Ra, 410Sa, 410Ta, 410NZ: 1st R phase, 1st S phase, 1st T phase, 1st N phase contact

410Rb, 410Sb, 410Tb, 410Nb: 2nd R phase, 2nd S phase, 2nd T phase, 2nd N phase contact

Claims (9)

Contact cam fixing shaft; An N-phase contact cam configured to be rotatably coupled to the power linkage link and the connector on both sides, and to be independently rotated about the contact cam fixed shaft via a rotating member on the contact cam fixed shaft; A plurality of other phases (power phases other than N phases) contact cams of which a power linkage link and a connector are rotatably coupled at both sides, and the contact cam fixed shafts are axially coupled; An N-phase power linkage linkage rotatably coupled to a position of the switch-side portion of the N-phase contact portion; Moving terminal shaft part of the power switchgear with a neutral contact superimposition function, characterized in that consisting of; a tangential power linkage link rotatably coupled to the position of the switching side of any one of the other wound contact cam. The contact cam of claim 1, wherein the N-phase and other-phase contact cams have a connector coupling hole, a power linkage link coupling hole, and a contact cam fixed shaft hole formed in a triangular shape, and are coupled to the contact cam fixed shaft hole when the power linkage link moves forward and backward. Movable terminal shaft portion of the power transfer switch with a neutral contact overlapping function, characterized in that configured to rotate around the cam fixed shaft. The movable terminal shaft of claim 1 or 2, wherein the other phase (non-N phase) contact cams are fixedly attached to the contact cam fixed shaft. The neutral contact overlapping function according to claim 1 or 2, wherein the other cam contacts (other than the N-phase) contact cams are rotatably coupled to the contact cam fixed shaft via a rotating member such as a bearing. Movable terminal shaft of one power transfer switch. A neutral (N-phase) contact drive bar formed at one end thereof with a control link shaft hole in which a control link shaft of the throttle switch is rotatably coupled at regular intervals and rotatably fixed at a fixed point; A control link shaft hole having a control link shaft coupled to the control link shaft of the cutaway switch to be able to flow at a predetermined interval, and the other phase (non-N phase) contact drive bar rotatably fixed at a fixed point; One end of the N-phase power linkage link is coupled to each position having a predetermined interval (referred to as "N-phase power linkage linkage spacing") on both sides of the fixed point of the neutral contact drive bar, the other contact point drive bar First and second movable terminal shaft portions to which one end of the other phase power linkage link is respectively coupled at each position having an interval greater than the N phase power linkage link coupling spacing on each side of a fixed point of each other; Movable terminal portion of the power transfer switch with a neutral contact superposition function characterized in that it is configured. The method according to claim 5, wherein the neutral contact drive bar (N-phase drive bar), A control link shaft hole is formed in which the control link shaft is coupled to be movable by a predetermined distance at an N-phase side of the control link shaft of the switching unit, The first and second N-phase power interlocking link coupling holes, to which the respective N-phase power interlocking links of the first and first movable terminal shafts for commercial and emergency power supply, are coupled, have a predetermined distance from both sides of the fixed point (N-phase power interlocking). Link coupling spacing) A movable terminal part of a power transfer switch with a neutral contact overlapping function, characterized in that a fixed point pin hole is formed in the center of the first and second N-phase power linkage linking holes. The method of claim 5, wherein the bruising drive bar, A control link shaft hole is formed in which the control link shaft is coupled to the control link shaft in a position on the other side of the control link shaft to be movable by a predetermined distance; The first and second multiphase power interlocking link coupling holes to which the respective other phase power interlocking links of the first and second movable terminal shaft portions for commercial and emergency power supply are coupled are larger than the N phase power interlocking link coupling interval from both sides of the fixed point. It is formed to have a gap (coupling linkage of the linkage power source), A movable terminal part of a power transfer switch with a neutral contact overlapping function, characterized in that a fixed point pin hole is formed in the center of the first and second combusted power linkage linking holes. The method according to any one of claims 5 to 7, A connector having one end rotatably coupled to the fixed terminal portion side of the N-phase and other-phase contact cams; And a contact body portion rotatably coupled to the end of the connector, respectively. The neutral contact overlapping function of claim 8, wherein the contact body part further comprises a contact point at which one end is rotatably coupled via an elastic member at a position in contact with the contact point of the fixed terminal part of the contact body part. Movable terminal part of the power switch.

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