KR102137012B1 - Terminal block having function indicating power application and reversed phase fastening - Google Patents

Abstract

The present invention relates to a terminal block having a function of indicating power application and reversed phase fastening. According to the present invention, the terminal block having the function of indicating power application and reversed phase fastening comprises: a main block wherein on an upper surface unit of the body formed are a plurality of isolation cells with which power cables of each phase of R, S, and T (or u, v, and w) of the switchboard unit of the three phase AC power are respectively fastened, and on a lower surface unit of the body formed is a storage space with a certain depth; a PCB assembly built in the storage space formed on the lower surface unit of the body of the main block, including a plurality of display lamps, which are turned on in accordance with whether the three phase AC power is applied or not and when at least two of the three phases of R, S, and T (or u, v, and w) are reversely fastened, and various circuit device and driving circuits; a cover member installed on a lower surface unit of the main block to protect the PCB assembly built in the storage space of the main block, having a plurality of light penetrating windows to allow even a user in the outside of the main block to check the light when the display lamp installed in the PCB assembly is turned on; and an auxiliary block detachably engaged with one side of the body of the main block for fastening a middle line (N phase) in case of a power switch of the three-phase four-line type.

Description

Terminal block having function indicating power application and reversed phase fastening}

The present invention relates to a terminal block installed in a switchboard, a distribution panel, a switchboard, etc. More specifically, whether power is applied to a power cable fastened to the terminal block and R, S, T (or u, v, w) in three phases When at least two phases are fastened in reverse (or vice versa), it relates to a terminal block having a power supply and a reverse phase fastening indication function that can prevent the occurrence of a safety accident by lighting and displaying each state by a display lamp.

A terminal block is mainly installed in a switchboard, distribution panel, switchboard, etc. to connect the power cable on the power receiving side and the power cable on the power distribution (distribution) side, so that the power on the power receiving side of the upper layer is supplied to the load of the lower layer, or the cable It is one of the electric parts that is installed in the middle when the wiring (laying) distance is long and connects both cables so that power can be supplied from the power source to the final load stage. There are various sizes and types of terminal blocks depending on the thickness of the cable to be connected or the size of the voltage or current used.

1 is an external perspective view showing a configuration of an example of a conventional terminal block.

Referring to FIG. 1, the conventional terminal block 100 is generally composed of a substantially rectangular parallelepiped body 110, and the body 110 includes R, S, and T (or u, v, w) of a three-phase AC power distribution part. A plurality of (eight in this example) isolation cells 110R, 110S, 110T, and 110N to which power cables and neutral conductors of each phase can be fastened are formed.

By the way, in the conventional terminal block 100 as described above, whether power is currently applied to the power cable fastened to the terminal block, and at least two phases of R, S, T (or u, v, w) three phases are reversed. There is no means to know whether or not they are fastened (conversely), so when a user or operator performs a task of fastening or releasing a power cable to a terminal block, there is a risk of a safety accident such as an electric shock. In addition, three phases of R, S, and T (or u, v, and w) must be correctly connected to the terminal block.If at least two phases of the three phases are inversely (inversely), due to phase voltage or line voltage imbalance, etc. An accident such as a fire or damage to an electric device occurs due to overvoltage or overcurrent caused by it, or in the case of a 3-phase induction motor, the direction of rotation is reversed (that is, reverse rotation to reverse rotation or reverse rotation to forward rotation). A number of dangerous accidents can occur on site facilities.

On the other hand, Korean Patent Publication No. 10-2017-0006696 (Patent Document 1) discloses a "terminal block for a switchboard and a switchboard", and the terminal block for the switchboard and switchboard is made of an insulating material and the case of the case. It is mounted inside and has a connection member made of metal having a connection hole for connecting a power cable, a fixing bolt fastened to the connection hole of the connection member to fix the power cable, and a connection member inside the case. A bimetal that operates when the temperature of the connecting member rises above a certain temperature, and a surge protector configured at the bottom of the bimetal inside the case and grounded at one side to protect equipment from internal opening and closing surges and external surges; It is configured on the upper side of the case to detect the surrounding arc including the connecting member, and is configured on one side of the case to receive the surge signal and the arc signal from the surge protector and the arc detector to control the surge protector. It characterized in that it is configured to include a control unit that delivers to the administrator.

In the case of patent document 1 as described above, the short circuit, overload, short circuit (ground fault), disconnection, contact failure, and sparks are detected by the built-in bimetal, arc detector, and surge protector, so that it can be quickly fired through deterioration diagnosis and surge protection. Although there is an advantage that it can respond and protect equipment, at least two of R, S, T (or u, v, w) three phases and whether power is applied to the power cable connected to the terminal block On the contrary, there is a problem in that there is a risk of occurrence of a safety accident because a means for knowing whether or not it is concluded is not taken.

Republic of Korea Patent Publication No. 10-2017-0006696 (2017.01.18. public)

The present invention was created to improve the problems of the prior art as described above, and whether power is applied to a power cable fastened to a terminal block and at least 2 of R, S, T (or u, v, w) three phases. An object of the present invention is to provide a terminal block having a power supply and a reverse phase fastening indication function that can prevent the occurrence of a safety accident in advance by lighting each state by a display lamp when the phases are reversed (reversely) fastened.

In order to achieve the above object, the terminal block having the power supply and reverse phase fastening display function according to the present invention,

The upper surface of the body is formed with a plurality of isolation cells to which power cables of each phase (R, S, T (or u, v, w)) of the three-phase AC power distribution part can be fastened, respectively. A main block in which a storage space of a predetermined depth is formed on a bottom portion of the;

Built in the storage space formed at the bottom of the body of the main block, whether three-phase AC power is applied and at least two phases of the R, S, T (or u, v, w) three phases are reversed (opposite ) When fastened, a PCB assembly composed of a plurality of display lamps and various circuit elements and driving circuits to light and display according to each state; And

It is installed on the bottom surface of the main block to protect the PCB assembly embedded in the storage space of the main block, and a plurality of lights can be checked outside the main block when the display lamp installed on the PCB assembly lights up. It has a feature in that it includes a cover member on which a light transmitting window is formed.

Here, it is preferably detachably coupled to one side of the body of the main block, and may further include an auxiliary block for fastening the neutral wire (N-phase) in a three-phase, four-wire type power distribution and distribution situation.

At this time, since the auxiliary block is detachably coupled to one side of the body of the main block, it may be configured to be detachably coupled to the main block by a sliding fastening method.

At this time, for coupling by the sliding fastening method, a concave-convex guide groove is formed in the main block, and the concave-convex portion is coupled to the concave-convex guide groove of the main block in the auxiliary block. An iron-shaped protruding jaw portion may be formed.

In addition, the plurality of display lamps installed in the PCB assembly are first, second, and third light emitting diodes (LEDs) that light up and display when three-phase AC power is applied, and light up when the three-phase AC power is applied. , R, S, T (or u, v, w) At least one of the four light emitting diodes (LED) and R, S, T (or u, v, w) three phases that light up and display when the three phases are normally engaged. It may be composed of a fifth light emitting diode (LED) that lights up and displays when the two phases are reversed (opposite).

In this case, the first, second, and third light emitting diodes (LEDs) may be composed of light emitting diodes (LEDs) of the same color, or all of light emitting diodes (LEDs) of different colors.

At this time, the fourth light-emitting diode (LED) and the fifth light-emitting diode (LED) may also be composed of light-emitting diodes (LEDs) of the same color or light-emitting diodes (LEDs) of different colors.

In addition, the plurality of light-transmitting windows formed on the cover member includes three light-transmitting windows for checking power application to emit light emitted when the first, second, and third light-emitting diodes (LEDs) are turned on. 4 R, S, T (or u, v, w) that transmits light when the light emitting diode (LED) is turned on, one light transmission window for normal fastening confirmation of three phases, and the lighting of the fifth light emitting diode (LED) At least two phases of R, S, T (or u, v, w) for transmitting the light emitted from the outside to the outside may be composed of one light transmitting window for confirming the reverse phase fastening.

At this time, the three light transmission windows for checking the application of power are formed to extend vertically side by side at the edge of one side of the rectangular base plate of the cover member, and at least one of the three light transmission windows and the three phases for confirming the normal fastening of the three phases One light transmitting window for confirming the reversed fastening of the two phases may be configured to have a structure formed by extending vertically side by side at the edge of the other side of the base plate.

At this time, "normal" or "○" is marked on the transparent window for confirming the normal fastening of the three phases, and "reverse phase" or "X" can be marked on the transparent window for confirming the reversed phase of at least two of the three phases. .

According to the present invention, when power is applied to a power cable that is fastened to a terminal block and at least two phases of R, S, T (or u, v, w) three phases are reversed (opposite), each By lighting and displaying the state with a display lamp, there is an advantage that it is possible to prevent damage to load equipment or other safety accidents.

1 is an external perspective view showing the configuration of a conventional terminal block.
Figure 2 is a front appearance perspective view showing the configuration of a terminal block having a power-on and inverse fastening display function according to the present invention.
Figure 3 is a perspective view of the rear appearance showing the configuration of a terminal block having a power-on and inverse fastening display function according to the present invention.
4 is a bottom perspective view of a front portion of a terminal block having a power-on and inverse fastening display function according to the present invention.
5 is a bottom perspective view of a rear portion of a terminal block having a function of applying power and inverse fastening according to the present invention.
6 is an exploded front perspective view of a main block and an auxiliary block of a terminal block having a function of applying power and inverse fastening according to the present invention.
7 is an exploded rear perspective view of a main block and an auxiliary block of a terminal block having power supply and reverse phase fastening indication according to the present invention.
8 is an exploded perspective view of a main block, an auxiliary block, and a cover member of a terminal block having a function of applying power and inverting fastening according to the present invention.
9 is an exploded perspective view of a main block, an auxiliary block, a cover member, and a PCB assembly of a terminal block having a power supply and reverse phase fastening indication function according to the present invention.
10 is an LED driving circuit diagram of a PCB assembly of a terminal block having a power supply and reverse phase fastening display function according to the present invention.

The terms or words used in the specification and claims should not be interpreted as being limited to the ordinary or dictionary meanings, and the inventor can appropriately define the concept of terms in order to best describe his or her invention. Based on the principles, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Throughout the specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated. In addition, terms such as “…unit”, “…group”, “module”, and “device” described in the specification mean a unit that processes at least one function or operation, which is hardware or software or a combination of hardware and software. Can be implemented as

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

2 to 9 is a terminal block having a power supply and reverse phase fastening display function according to an embodiment of the present invention, Figure 2 is a front appearance perspective view showing the configuration of the terminal block, Figure 3 is a rear appearance showing the configuration of the terminal block Perspective view, FIG. 4 is a bottom perspective view of the front portion of the terminal block, FIG. 5 is a bottom perspective view of the rear portion of the terminal block, FIG. 6 is a front perspective separation view of the main block and the auxiliary block of the terminal block, and FIG. 7 is an auxiliary view of the main block of the terminal block 8 is an exploded perspective view of the main block, auxiliary block and cover member of the terminal block, and FIG. 9 is an exploded perspective view of the main block, auxiliary block, cover member and PCB assembly of the terminal block.

2 to 9, a terminal block 200 having a power application and a reverse phase fastening indication function according to the present invention includes a main block 210, a PCB assembly 230, and a cover member 240.

The main block 210 has a plurality of (e.g., power cable of each phase, R, S, T (or u, v, w) power cable of the three-phase alternating current power distribution part on the upper surface of the body) , 6) isolation cells 210R, 210S, 210T are formed, and a storage space 210h (see FIG. 9) having a predetermined depth is formed at the bottom of the body.

The PCB assembly 230 (see FIGS. 8 and 9) is embedded in the storage space 210h formed in the bottom of the body of the main block 210, and whether or not to apply three-phase AC power and the R, When at least two phases of S, T (or u, v, w) three phases are reversed (and vice versa), a plurality of (e.g., five) display lamps 230a to 230e to light and display according to each state ) (See Fig. 9) and various circuit elements (for example, resistors, capacitors, etc.) and driving circuits.

The cover member 240 is installed on the bottom surface of the main block 210 to protect the PCB assembly 230 embedded in the storage space 210h of the main block 210, and is provided on the PCB assembly 230. When the display lamps 230a to 230e are installed, a plurality of light transmitting windows 240a to 240e (refer to FIGS. 4, 5 and 9) are formed so that the light can be checked outside the main block 210. have.

The terminal block 200 of the present invention having the above configuration is preferably detachably coupled to one side of the body of the main block 210, a neutral wire (N-phase) in a three-phase, four-wire power distribution and distribution situation. An auxiliary block 220 for fastening (220N) may be further included.

At this time, since the auxiliary block 220 is detachably coupled to one side of the body of the main block 210, the auxiliary block 220 may be configured to be detachably coupled to the main block 210 by a sliding fastening method.

At this time, for coupling by the sliding fastening method, as shown in FIG. 6, the main block 210 is formed with a yaw-shaped guide groove 210g, and the auxiliary block 220 has the main An iron-shaped protruding jaw portion 220t may be formed to be unevenly coupled to the concave-convex guide groove portion 210g of the block. However, it is not necessarily limited to being formed in such a form, and in some cases, in contrast to the above case, a concave guide groove 210g is formed in the auxiliary block 220, and iron-shaped The protruding jaw portion 220t may be formed in the main block 210.

In addition, the plurality of display lamps 230a to 230e (refer to FIG. 9) installed in the PCB assembly 230 are first, second, and third light emitting diodes (LEDs) that are turned on and displayed when three-phase AC power is applied. ) (230a ~ 230c), and when the three-phase AC power is applied, lights, but when the R, S, T (or u, v, w) three-phase is normally connected to display a fourth light-emitting diode (LED) (230d) and R, S, T (or u, v, w) may be composed of a fifth light emitting diode (LED) 230e that lights up when at least two of the three phases are inversely (conversely) fastened. have.

In this case, the first, second, and third light emitting diodes (LEDs) 230a to 230c may all be composed of light-emitting diodes (LEDs) of the same color, or all of light-emitting diodes (LEDs) of different colors. .

At this time, the fourth light-emitting diode (LED) 230d and the fifth light-emitting diode (LED) 230e may also be composed of light-emitting diodes (LEDs) of the same color or light-emitting diodes (LEDs) of different colors. Can be.

In addition, the plurality of transparent windows 240a to 240e (see FIGS. 4, 5, and 9) formed on the cover member 240 may include the first, second, and third light emitting diodes (LEDs) 230a to Three light-transmitting windows 240a to 240c for confirming the application of electric power for transmitting light emitted to the outside when lighting 230c), and R to emit light to the outside when lighting of the fourth light emitting diode (LED) 230d , S, T (or u, v, w) 1 light transmitting window (240d) for checking the normal fastening of three phases, and the fifth light emitting diode (LED) (230e) R when transmitting light emitting light to the outside when lit, S, T (or u, v, w) may be composed of one light transmitting window 240e for checking the reverse phase fastening of at least two of the three phases.

At this time, the three light transmission windows 240a to 240c for checking the application of power are formed to extend vertically side by side at the edge of one side of the rectangular base plate of the cover member 240 (see FIGS. 4, 8 and 9). ), the one light transmitting window 240d for checking the normal fastening of the three phases and one light transmitting window 240e for checking the reverse phase fastening of at least two phases of the three phases are formed to extend vertically parallel to the edge of the other side of the base plate. It may be of a structure (see Fig. 5).

At this time, in addition, the three-phase normal fastening confirmation window 240d is marked with the word "normal" or "○" (circle display), and at least two of the three phases of the reverse-phase fastening confirmation window 240e is The word "reverse" or "X" (marked with X) can be marked.

Of course, in some cases, the normal fastening confirmation light-transmitting window 240d is marked with the letters "normal" and "○" (circled) together, and at least two of the three-phase reverse checking fastening windows 240e are The letters "reverse" and "X" (marked with X) may be marked together.

Meanwhile, FIG. 10 is an LED driving circuit diagram of a PCB assembly of a terminal block having a power supply and reverse phase fastening display function according to the present invention.

As illustrated in FIG. 10, the LED driving circuit of the PCB assembly 230 includes first, second, and third light emitting diodes (LEDs) 230a to 230c that light up and display when three-phase AC power is applied, and Lights up when three-phase AC power is applied, but when R, S, T (or u, v, w) three phases are normally connected, the fourth light emitting diode (LED) 230d and R, S, T are displayed. (Or u, v, w) a fifth light emitting diode (LED) 230e that lights up when at least two of the three phases are inverted (and vice versa) and a circuit element directly or indirectly involved in driving the LED It consists of a resistor (230f) and a capacitor (230g) as, and a driving circuit line for electrically connecting the above elements.

As described above, the terminal block having the power supply and the reverse phase fastening indication function according to the present invention is among the three phases of whether power is applied to the power cable fastened to the terminal block and R, S, T (or u, v, w) When at least two phases are connected in reverse (opposite), each state is lit and displayed by a display lamp, thereby preventing damage to load equipment or other safety accidents.

As described above, the present invention has been described in detail through preferred embodiments, but the present invention is not limited to this, and various modifications and applications can be made without departing from the spirit of the present invention. It is obvious to the technician. Therefore, the true scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent scope should be interpreted as being included in the scope of the present invention.

100: conventional terminal block
200: (Invention) Terminal block with power supply and reverse phase fastening indication function
210: main block 210R,210S,210T: isolation cell for cable fastening
210g: Guide groove 210h: Storage space
220: auxiliary block 220N: neutral cell (N-phase) fastening isolation cell
220t: protruding jaw 230: PCB assembly
230a to 230c: first, second, and third light emitting diodes (LED)
230d: fourth light emitting diode (LED) 230e: fifth light emitting diode (LED)
230f: Resistance 230g: Capacitor
240: cover member 240a to 240e: a plurality of light transmitting windows

Claims (10)

The upper surface of the body is formed with a plurality of isolation cells to which power cables of each phase (R, S, T (or u, v, w)) of the three-phase AC power distribution part can be fastened, respectively. A main block in which a storage space of a predetermined depth is formed on a bottom portion of the;
Built in the storage space formed at the bottom of the body of the main block, and whether or not three-phase AC power is applied and at least two phases of the R, S, T (or u, v, w) three phases are reversed (opposite ) When fastened, a PCB assembly composed of a plurality of display lamps and various circuit elements and driving circuits to light and display according to each state; And
It is installed on the bottom surface of the main block to protect the PCB assembly embedded in the storage space of the main block, and a plurality of lights can be checked outside the main block when the display lamp installed on the PCB assembly lights up. A terminal block having a power supply application and a reverse phase fastening display function including a cover member on which a transparent window is formed.
According to claim 1,
A terminal block having a power supply and a reverse phase fastening indication function further comprising an auxiliary block for fastening the neutral block (N phase) in a three-phase, four-wire type power supply and distribution situation, detachably coupled to one side of the main block body. According to claim 2,
Since the auxiliary block is detachably coupled to one side of the body of the main block, a terminal block having a power supply and reverse phase fastening indication function configured to be detachably coupled to the main block by a sliding fastening method.
According to claim 3,
For coupling by the sliding fastening method, a concave-convex guide groove is formed in the main block, and the concave-convex portion can be coupled to the concave-convex guide groove of the main block in the auxiliary block. A terminal block having a power-on and reverse-phase fastening indication function with an iron-shaped protrusion.
According to claim 1,
The plurality of display lamps installed in the PCB assembly illuminates when first, second, and third light emitting diodes (LEDs) are turned on and displayed when three-phase AC power is applied, and lights when R is applied. , S, T (or u, v, w) The fourth light emitting diode (LED) that lights up and displays when the three phases are normally engaged, and at least two of the three phases of R, S, T (or u, v, w) A terminal block having a power-on and reverse-phase fastening display consisting of a fifth light emitting diode (LED) that lights up and displays when fastened in reverse (opposite).
The method of claim 5,
The first, second, and third light-emitting diodes (LEDs) are all composed of light-emitting diodes (LEDs) of the same color, or terminal blocks having power-on and reverse-phase fastening display functions made of light-emitting diodes (LEDs) of different colors. .
The method of claim 5,
The fourth light-emitting diode (LED) and the fifth light-emitting diode (LED) are composed of light-emitting diodes (LEDs) of the same color, or terminal blocks having a power-on and reverse-phase fastening display function consisting of light-emitting diodes (LEDs) of different colors. .
The method of claim 5,
The plurality of light-transmitting windows formed on the cover member includes three light-transmitting windows for checking power application to emit light emitted when the first, second, and third light-emitting diodes (LEDs) are turned on, and the fourth light-emitting. When the diode (LED) is turned on, one light transmitting window for confirming the normal fastening of three phases of R, S, T (or u, v, w) that emits light to the outside and the light emitting when the fifth light emitting diode (LED) is turned on Terminal block with power supply and reverse phase fastening indication function consisting of one light transmitting window for checking reverse phase fastening of at least two phases of R, S, T (or u, v, w) that transmit light to the outside.
The method of claim 8,
The three transmission windows for confirming the application of power are formed to extend vertically side by side on the edge of one side of the rectangular base plate of the cover member, and at least two of the three transmission windows and the three phases for normal fastening confirmation of the three phases One light transmitting window for checking the reverse phase fastening is a terminal block having a power supply and reverse phase fastening indication function consisting of a structure formed vertically parallel to the edge of the other side of the base plate.
The method of claim 9,
The normal and fast phases of the three phases are marked with "normal" or "○", and at least two phases of the three phases are checked with the reverse window or "X" marked with a power window that is marked with a power supply. Terminal block with fastening indication function.

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