JP2009189128A - Control board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control board which is made compact in the size of the board as a whole, and improved in wiring structure so that function units, a power supply side and a load side can further easily be wiring-connected. <P>SOLUTION: In the control board which accommodates a plurality of the function units 2 therein so as to be laterally aligned in a single row, and wiring-connects the function units to a power supply cable 7 and a load cable 8 which are drawn into the board, a box-shaped unit housing frame 3 for housing the function units 2 so that the units can individually and outwardly be drawn out by releasing its front face is arranged in a board frame 1, a power-supply side horizontal bus bar 5 which is common to the laterally-aligned function units, and a receptacle of a plug-in connector connected to a load-side terminal base 6 so as to individually correspond to each function unit are arranged at the rear face side of the unit housing frame 3, a power-supply side contact and a load side contact which are fitted with the horizontal bus bar and the receptacle of the plug-in connector in a press-in position pressed into the unit housing frame are arranged at the back face of each function unit, and the function units 2 are simultaneously connected to the power supply side and the load side via the contacts. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a configuration of a control panel that is installed at a site such as a motor power facility to perform motor operation control, protection, and monitoring.

The control panel described above is installed at the site of power equipment by accommodating multiple functional units equipped with circuit breakers as protective equipment, control equipment (electromagnetic contactors), and monitoring and display devices. Used. As the control panel, in order to facilitate the wiring connection of the functional units, unit shelves (horizontal partition plates) on which a plurality of functional units are placed so that they can be pulled out and arranged in the upper and lower stages in the panel, and Corresponding to the unit shelves at each stage, the power supply side branch bus is installed in the back of the panel, and a plug-in connector to connect to the branch bus is provided on the back of the function unit, and the function unit is set in the panel There is known a configuration in which plug-in connection with a power supply side cable can be performed (see, for example, Patent Document 1).
JP-A-11-164414

The wiring structure in the panel disclosed in Patent Document 1 has an advantage that the power supply side connection of the functional unit can be easily performed, but the following problems still remain on the wiring work surface.
That is, in Patent Document 1, the wiring between the functional unit and the load side is individually connected between a large number of load-side cables drawn into the panel and each functional unit. There is a problem that it takes time to work and clean up the load side cable. Further, since the branch bus on the power source side is separated from the unit shelf and laid in the panel, the structure in the panel becomes complicated.
The present invention has been made in view of the above points, and the wiring structure in the conventional control panel has been reviewed to make the entire panel compact and compact, and the wiring connection between the functional unit and the power supply side and the load side has been further simplified. An object of the present invention is to provide a control panel having an improved wiring structure so that it can be performed.

In order to achieve the above object, according to the present invention, a plurality of functional units are arranged in a horizontal row in a panel, and each functional unit is wired to a power supply line and a load-side power supply line drawn into the panel, respectively. In the connected control panel,
A box-shaped unit storage frame is installed in the panel to open the front and store each functional unit individually so that it can be pulled out forward. A common horizontal bus on the power supply side and plug-in connector receptacles connected to the load side terminal block corresponding to each function unit are arranged, and the push-in position to the unit storage frame is placed on the back of each function unit. And a contact for fitting to the receptacle of the horizontal bus bar and the plug-in connector.
In the control panel having the above-described configuration,
(1) The horizontal buses of each phase are arranged in a line in the upper and lower sides and laid on the back side of the unit storage frame, and the insertion hole for the power supply side contact of the functional unit is opened on the back wall of the frame. It connects to a power cable via the vertical bus line laid in (Claim 2).
(2) After the load side terminal block is attached to the side of the unit storage frame, the receptacle of the plug-in connector disposed on the back wall surface of the unit storage frame corresponding to each functional unit, and the load side terminal block Are connected by wiring (claim 3).

According to the above wiring structure, the plug-in type connection between the power supply side and the load side power supply line can be performed simultaneously by simply pushing each functional unit into the unit storage frame installed in the panel from the front and setting. Since the connection is made through the contact, wiring workability is greatly improved.
In addition, by using the unit storage frame installed in the panel, the power supply side horizontal bus, the load side terminal block, and the plug-in connector receptacle connected to the load side terminal block corresponding to each functional unit are attached to the frame. As a result of the arrangement, the assembly work can be easily performed together with the downsizing of the wiring structure in the panel.

Hereinafter, embodiments of the present invention will be described based on examples shown in FIGS. 1 is a front view showing the arrangement of the control panel in the panel, FIG. 2 is a plan view of FIG. 1, FIGS. 3 (a) and 3 (b) are a left side view and a right side view of FIG. (A), (b) is a front view of the functional unit alone and a side view showing the internal structure, FIG. 5 is an external perspective view of the assembled state in which a plurality of functional units are housed in the unit housing frame, and FIG. FIG.
In each figure, 1 is a panel frame of a control panel (closed panel), 1a is a front door of the control panel 1, 2 is a functional unit, 3 is a unit storage frame that houses a plurality of functional units 2 side by side, 4 is Vertical bus on the power supply side laid at the left end of the panel, 5 is a horizontal power supply line common to each functional unit 2, 6 is a load side terminal block, 7 is a power cable drawn into the panel, 8 is a load side connection Lines (cables) 9 are control terminal blocks.
Next, the detailed structure of the functional unit 2 is shown in FIGS. The functional unit 2 in the illustrated example includes a circuit breaker 2a, a circuit breaker operation handle 2b, a control transformer (current transformer) 2c, an electromagnetic contactor 2d, a display panel 2e, and a drawer handle 2f in a vertically long rectangular unit case. , A control terminal 2g and the like, and further, a plug-in type power source side contact 2h and a load side contact 2i are provided on the back of the unit case so as to be vertically separated and projected to the back.

On the other hand, as shown in FIG. 6, the unit storage frame 3 is a box-shaped case with an open front surface, and a guide rail 3a is formed on the bottom wall for guiding and supporting the functional units 2 arranged side by side so that they can be pulled out individually. ing. In addition, a step is formed on the upper rear end side of the frame, and behind the back wall, it corresponds to the horizontal bus 5 (U, V, W on the power supply side common to each functional unit 2) 3 flat bar conductors) are arranged vertically and insulated and supported on the frame. Further, on the back wall of the frame, the power supply side contact 2h of the functional unit 2 described above corresponding to the horizontal bus 5 of each phase is inserted. The hole 3b is opened.
In addition, a load-side terminal block 6 is assembled to the right side portion of the unit storage frame 3, and a plug-in connector receptacle 6a arranged on the left and right sides corresponding to the load-side contacts 2i of the functional unit 2 on the rear wall surface of the frame. Is installed, and an electric wire is wired between the receptacle 6 a and the load-side terminal block 6.
After the unit storage frame 3 is installed in the center of the control panel in the assembled state in which the horizontal bus 5, the load side terminal block 6, the plug-in connector receptacle 6a are assembled to the unit storage frame 3 as described above. Then, one end of the horizontal bus bar 5 is coupled to the upper end of the vertical bus bar 4 laid on the right side of the board and connected to the power cable 7 drawn into the board. The load side terminal block 6 is connected with a load side cable 8 drawn into the panel.

In this state, when the functional units 2 are individually housed in the unit housing frame 3 from the front of the panel frame 1 and pushed into the operating position, the power source side contact 2h and the load side contact 2i of the functional unit 2 are respectively connected to the unit housing frame 3 Are simultaneously fitted and connected to the horizontal bus 5 and the receptacle 6a of the plug-in connector. Further, when the functional unit 2 is pulled out from the front to the disconnection position for maintenance, inspection, etc., the power source side contact 2h and the load side contact 2i are simultaneously detached from the horizontal bus 5 and the receptacle 6a so that there is a gap between the power source side and the load side. Disconnect.
As is clear from the above description, in the wiring structure of the illustrated embodiment, by simply moving the respective functional units 2 accommodated in the unit storage frame 3 in the panel to the operating position and disconnecting position, Connection and disconnection with the load-side power supply line can be performed easily. In addition, all components of the receptacle 6a of the plug-in connector connected to the horizontal bus 5 on the power source side, the load side terminal block 6, and the load side terminal block 6 are assembled to the unit storage frame 3, and then the unit storage frame. 3 is fixedly arranged in the panel of the control panel 1, the wiring structure becomes compact, and the assembly work of the control panel can be easily performed in a short time without trouble.

Front view showing in-panel layout of control panel Is a plan view of FIG. In the side view of FIG. 1, (a) and (b) are a left side view and a right side view, respectively. FIG. 2 is a detailed structural diagram of the functional unit in FIG. 1, wherein (a) and (b) are a front view of the functional unit and a side view showing the internal structure, respectively. External perspective view of assembled state in which multiple functional units are housed in unit housing frame Is an exploded perspective view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control board frame 2 Functional unit 2h Power supply side contact 2i Load side contact 3 Unit storage frame 3a Power supply side contact insertion hole 3b Guide rail 4 Vertical bus 5 Horizontal bus 6 Load side terminal block 6a Plug-in connector receptacle

Claims (3)

In a control panel in which multiple functional units are stored in a horizontal row in the panel, and each functional unit is connected to the power supply line and load side power supply line that are drawn into the panel.
A box-shaped unit storage frame is installed in the panel to open the front and store each functional unit individually so that it can be pulled out forward. A common horizontal bus on the power supply side and plug-in connector receptacles connected to the load side terminal block corresponding to each function unit are arranged, and the push-in position to the unit storage frame is placed on the back of each function unit. A control panel comprising a contact for fitting to the horizontal bus and the receptacle of the plug-in connector. 2. The control panel according to claim 1, wherein horizontal buses of each phase are arranged in a line in the vertical direction and are laid on the back side of the unit storage frame, and an insertion hole for a power supply side contact of the functional unit is opened on the back wall of the frame. In addition, the control panel is characterized in that the horizontal bus is connected to the power cable through a vertical bus laid in the panel. 2. The control panel according to claim 1, wherein the load side terminal block is attached to the side portion of the functional unit storage frame, and wiring is performed between the terminal block and the receptacle of the plug-in connector corresponding to each functional unit. A control panel characterized by that.

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