JP2012114207A - Control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide control equipment capable of restraining the number of components from being increased, and preventing a rubber connector from falling over with a simple structure.SOLUTION: The control equipment comprises a hollow box shaped housing 11 having an opening 121 on a front face; a liquid crystal panel 21, which is arranged in the housing 11 and whose front face is exposed to the outside; a rubber connector 22, in which a conductor is embedded, from one and the other ends of which the conductor is exposed to the outside, and whose one end is in contact with a rear face of the liquid crystal panel 21; and a printed circuit board 26 contacting the other end of the rubber connector 22, electrically connected to the liquid crystal panel 21 via the conductor, and providing or receiving electric signals to or from the liquid crystal panel 21. A rib 124 and a nipping rib 125 are formed on the inner face of the housing 11, and one end of the rubber connector 22 is fitted between the rib 124 and the nipping rib 125.

Description

  The present invention relates to a control device.

  Conventionally, a mounting frame, a liquid crystal panel disposed in the mounting frame, a printed circuit board on which a driving circuit for driving the liquid crystal panel is formed, and a rubber connector sandwiched between the liquid crystal panel and the driving circuit, A control device is provided.

  In the rubber connector, a conductor is embedded in a rectangular plate-shaped rubber body, and the conductor is exposed to the outside from one end and the other end of the rubber connector. Then, one end of the rubber connector comes into contact with the conductive portion of the liquid crystal panel, and the other end is connected to the drive circuit, so that the liquid crystal panel and the printed board are electrically connected via the conductor, and the liquid crystal panel is connected to the liquid crystal panel. A drive signal is transmitted to the panel.

  Here, the rubber connector is disposed in a state of being sandwiched between the liquid crystal panel and the printed board, but the rubber connector may fall down due to vibration or the like. In view of this, there has been a control device that includes an auxiliary plate that engages with the attachment frame and holds the rubber connector together with the attachment frame to prevent the rubber connector from falling (see, for example, Patent Document 1).

JP 2004-259900 A

  However, in the above control device, providing the auxiliary plate increases the number of parts, and furthermore, it is necessary to form engaging portions on the attachment frame and the auxiliary plate, respectively, and the structure becomes complicated. There was a problem.

  The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a control device that can suppress an increase in the number of components and prevent a rubber connector from falling over with a simple structure.

  In order to solve the above problems, a control device according to the present invention includes a hollow box-type housing having an opening, a liquid crystal panel disposed in the housing and having one surface exposed to the outside, and a conductor embedded therein. The conductive body is exposed to the outside from one end and the other end, the rubber connector having one end abutting on the other surface of the liquid crystal panel, and the other end of the rubber connector, and the liquid crystal panel via the conductor And a substrate that is electrically connected to the liquid crystal panel to exchange electrical signals, and on the inner surface of the housing, a rib into which at least a part of one end of the rubber connector is fitted is formed. It is characterized by that.

  In this control device, the rubber connector is formed in a plate shape, and the rib is a pair of wall portions facing one plate surface of the rubber connector and the other plate surface facing the one plate surface. It is preferable to have.

  In this control device, it is preferable that the rib has a connection surface that connects the pair of wall portions so as to face a side end surface of the rubber connector along a facing direction of the liquid crystal panel and the substrate.

  In the present invention, there is an effect that it is possible to provide a control device that can suppress an increase in the number of parts and can prevent a rubber connector from falling down with a simple structure.

The principal part disassembled perspective view of the control apparatus in Embodiment 1 of this invention is shown. The disassembled perspective view of the control apparatus same as the above is shown. The principal part disassembled perspective view of the control apparatus same as the above is shown. The principal part disassembled perspective view of the control apparatus same as the above is shown. The rear view of the control apparatus in the same as the above is shown. The rear view of the control apparatus in the same as the above is shown. The rear view of the control apparatus in the same as the above is shown. The schematic perspective view of the control apparatus same as the above is shown. The perspective view of the control apparatus in the same as the above is shown. The perspective view of the control apparatus in the same as the above is shown. The rear view of the control apparatus in the same as the above is shown. The perspective view of the bracket holding the control apparatus in the same as the above is shown. The principal part sectional view at the time of hold | maintaining the control apparatus in the same as a bracket is shown. A schematic connection diagram of the control device is shown. The schematic block diagram of the control apparatus same as the above is shown. The perspective view of the control unit in Embodiment 2 of this invention is shown. The schematic perspective view of the control unit same as the above is shown. The schematic connection figure of the control unit in the same as the above is shown. The schematic block diagram of the control unit in the same as the above is shown.

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

(Embodiment 1)
The control apparatus A of this embodiment is demonstrated using FIGS. In the following description, the vertical and horizontal directions in FIG.

  As shown in FIG. 2, the control device A of the present embodiment includes a housing unit 1, an operation display unit 2, a terminal unit 3, an external connection unit 4, and a power supply unit 5. It is used as a power meter that displays the power consumption of a load (not shown) to be connected.

  As shown in FIG. 2, the operation display unit 2 includes a liquid crystal panel 21, a pair of rubber connectors 22, a reflector 23, a plurality (three in this embodiment) of operation switches 24, a socket connector 25, a substrate, 26 and a backup battery 34.

  The liquid crystal panel 21 is formed in a substantially rectangular plate shape, and stepped portions 21a are formed at the upper and lower ends of the rear surface.

  The rubber connector 22 is formed from a substantially rectangular parallelepiped rubber having a conductor embedded therein. As shown in FIG. 1, the pair of rubber connectors 22 are arranged side by side in the vertical direction, one end of which is in contact with the stepped portion 21 a of the liquid crystal panel 21, and the other end is in contact with the front surface of the substrate 26. It is held between the substrate 26 and the liquid crystal panel 21. At that time, one end and the other end of the rubber connector 22 are in pressure contact with the substrate 26 and the liquid crystal panel 21, respectively, and the conductor embedded in the rubber connector 23 is exposed to the outside from the one end and the other end of the rubber connector 22. . Then, the conductor comes into contact with a connection terminal (not shown) of the liquid crystal panel 21 and a circuit pattern formed on the front surface of the substrate 26, so that the liquid crystal panel 21 and the substrate 26 are electrically connected.

  A reflector 23 is interposed between the liquid crystal panel 21 and the substrate 26. Here, a substantially rectangular diffusion sheet 27 is disposed on the front surface of the reflector 23, and the diffusion sheet 27 diffuses light emitted from a light source (not shown) disposed on the rear surface side of the reflector 23. Then, the liquid crystal panel 21 is irradiated. Further, from the left and right side surfaces of the reflector 23, locking pieces 23 a that protrude rearward are formed, and the locking holes 23 b formed in the locking pieces 23 a are respectively formed on the left and right side edges of the substrate 26. The reflector 23 is fixed to the substrate 26 by the engagement of the formed locking projection 26a.

  A so-called push button switch is used as the operation switch 24, and three operation switches 24 are arranged side by side on the front surface of the substrate 26 below the lower rubber connector 22. Here, the operation switch 24 is provided with a columnar operation portion 24a that can be pressed in the front-rear direction.

  Two socket connectors 25 are arranged side by side on the board 26 below the operation switch 24. Here, the socket connector 25 is formed in a substantially rectangular box shape having an open bottom surface, and a connector terminal (not shown) connected to the circuit pattern of the substrate 26 protrudes inside the socket connector 25.

  As shown in FIG. 3, a connection connector 261 to which one end of a connection cable (not shown) is inserted is mounted on the rear surface of the substrate 26. Furthermore, an electrode 314 that connects the backup battery 34 and the circuit is fixed to the substrate 26.

  As shown in FIGS. 2 and 3, the terminal unit 3 is disposed behind the operation display unit 2, the substrate 31 facing the rear surface of the substrate 26, a terminal block 32 mounted on the upper front end of the substrate 31, The terminal block 33 is mounted at the lower front end of the substrate 31.

  The substrate 31 is formed in a substantially rectangular plate shape, and a circuit connected to each terminal portion of the terminal blocks 32 and 33 is formed. In addition, a substantially semicircular cutout 31a is formed at the substantially right center of the substrate 31 in order to avoid interference with electronic components mounted on the lower surface of the substrate 26. Further, connection connectors 311 and 312 are mounted on the right end side of the rear surface of the substrate 31, and a plurality of connection pins 313 connected to the circuit pattern formed on the substrate 31 are arranged in parallel along the side edge on the left end of the rear surface. ing.

  The terminal block 32 has four so-called screw terminal portions 32a arranged side by side, and a partition wall 32b for separating the terminal portions 32a is provided between the terminal portions 32a.

  The terminal portion 33 includes four screw terminal portions 33a arranged side by side on the left and right sides, and three screw terminal portions 33b arranged side by side on the left and right below the screw terminal portions 33a. And between each screw terminal part 33a and between each screw terminal part 33b, the partition 33c for each isolating between each said screw terminal part 33a and each screw terminal part 33b is standingly arranged.

  As shown in FIGS. 2 and 3, the external connection unit 4 is disposed on the right side of the operation display unit 2 and the terminal unit 3, and a board 41 whose left surface faces the operation display unit 2 and the terminal unit 3, and the board The card slot 42 is mounted on the card 41.

  The board 41 is formed in a substantially rectangular plate shape, and a card slot 42, a mini USB connector 43, and a connection connector 44 used for connection to a slave unit to be described later are mounted on the right side. On the left surface of the substrate 41, connection connectors 411 and 412 that are detachably connected to connection connectors 311 and 312 mounted on the substrate 31 are mounted. In addition, a connection connector 413 connected to the connection connector 261 mounted on the substrate 26 via a cable (not shown) is mounted on the left surface of the substrate 41.

  In addition, substantially rectangular cutouts 41 a are formed at substantially the center of the upper and lower side edges of the substrate 41, and a pair of locking protrusions 31 b that protrude from the right edge of the substrate 31 to the cutout 41 a. As a result, the external connection unit 4 and the terminal unit 3 are positioned.

  The power supply unit 5 is composed of a substrate 51 on which a power supply circuit is formed, and a connection connector 52 having a plurality of connection holes 52a arranged in parallel along the left edge is mounted on the left end of the substrate 51. Here, in each connection hole 52a, a connection terminal (not shown) that is electrically connected to the power supply circuit of the substrate 51 protrudes, and the connection pin 313 of the terminal unit 3 is inserted into each connection hole 52a so that the terminal is connected. The unit 3 and the power supply unit 5 are conductively connected.

  In addition, the substrate 51 has a pair of substantially semicircular cutouts 51a formed at the left end, and a substantially rectangular protruding piece 511 protruding from the right end. A circular notch 51b is formed. Further, insertion holes 51c are formed in the vicinity of the upper right and lower left corners of the substrate 51, respectively.

  As shown in FIG. 2, the housing unit 1 includes a substantially rectangular box-shaped housing 11, a slide member 12, terminal covers 13, 14, 15, and a front cover 16.

  The casing 11 includes a hollow substantially rectangular box-shaped case main body 110 having an open front surface, and a hollow substantially rectangular box-shaped case cover 120 having a rear surface opened to cover the front surface of the case main body 110. The casing 11 is set to have the same external dimensions as the double type of so-called distribution panel agreement dimensions (dimensions defined in the JIS standard as the standard of the distribution board internal unit).

  As shown in FIG. 4, the case main body 110 is formed with a substantially cylindrical protrusion 11 a having a thread groove on the inner diameter portion in the vicinity of the upper left and lower right corners of the bottom surface 111. In the upper right and lower left, a substantially cross-shaped protrusion 11c is formed in the vicinity of the corner. Here, the protrusion 11a is formed with ribs 11b along the front-rear direction on the base end side of the outer peripheral surface, and four ribs 11b are formed at substantially equal intervals in the outer peripheral direction of the protrusion 11a. . Further, a substantially cross-shaped projecting piece 11d having an outer diameter smaller than that of the base end side is formed at the distal end of the projecting part 11c.

  Furthermore, cylindrical projections 11e each having a thread groove formed in an inner diameter portion shorter than the projections 11b are formed in the vicinity of the pair of projections 11b. In addition, on the right end side of the bottom surface 111, two substantially cross-shaped protrusions 11h are arranged in parallel up and down.

  In addition, a pair of locking pieces 11f protruding forward are formed from each side surface of the case body 110, and locking protrusions 11g protruding outward are formed on the locking pieces 11f. Has been. Further, a substantially rectangular notch 11 i that forms the connector connection hole 10 a together with the notch 10 c formed in the case cover 120 is formed on the right side surface of the case body 110.

  As shown in FIG. 1, a rail groove 112 for attaching a DIN rail 100 described later is formed on the rear surface of the case body 110 along the left-right direction. Further, a slide groove 113 orthogonal to the rail groove 112 is formed downward from a substantially center in the left-right direction of the rail groove 112, and the bottom surface of the rail groove 112 and the slide groove 113 are continuous. Here, on the upper side wall of the rail groove 112, a pair of locking claws 116 having a substantially rectangular plate shape projecting downward is provided side by side. Further, in the vicinity of the locking claw 116, a substantially triangular bulging portion 117 that bulges rearward from the bottom surface of the slide groove 113 is formed.

  The slide groove 113 is formed from the lower surface of the case body 110 to the rail groove 112. A pair of substantially triangular prism-shaped projections 114 whose corners P1 face each other in the left-right direction are arranged in parallel on the bottom surface of the slide groove 113, and a hexagonal projection is provided below the pair of projections 114. 115 is fixed by welding or the like. Here, the protrusion 115 is fixed to the case main body 110 such that a pair of apexes P2 and P3 facing each other face each other in the left-right direction.

  In addition, a pair of guide walls 118 that project from the left and right side walls of the slide groove 113 so as to approach each other and form a guide groove 119 between the bottom surface of the slide groove 113 are provided.

  A slide member 12 is provided in the slide groove 113 so as to be slidable in the vertical direction. The slide member 12 is formed in a substantially rectangular frame shape, and a pressing piece 12a that inclines forward as it goes downward extends from the upper surface of the inner peripheral surface thereof. Further, from the lower surface of the inner peripheral surface of the slide member 12, a pair of locking pieces 12 b that extend upward and have a columnar locking portion 12 c that protrudes forward at the tip portion are arranged in parallel. It is installed. In addition, the sliding member 12 is formed with sliding portions 12h that are thinner at the outer edges at the left and right ends than at the inner edge. Further, a rail locking piece 12d for locking a DIN rail 100, which will be described later, protrudes from the upper end of the slide member 12, and a substantially rectangular shape having an insertion hole 12f formed at the lower end of the slide member 12. A plate-like lead portion 12e is projected. In addition, the slide member 12 is formed with a restricting portion 12g having a thickness greater than that of the sliding portion 12h at the lower ends of the left and right ends.

  Then, the slide member 12 has the sliding portion 12h inserted into the guide groove 119 of the slide groove 113, and moves slidably in the vertical direction. Here, as shown in FIG. 5, in the slide member 12, the locking portion 12c is positioned between the pair of projections 114 and the projection 115, and the locking piece 12d is locked to the DIN rail 100 described later. It can slide up and down from the locking position (first position).

  Then, when the slide member 12 is pulled downward by grasping the drawer portion 12e of the slide member 12 at the locking position, the locking to the DIN rail 100 described later by the locking portion 12d is released. Then, the locking portion 12c slides on the outer peripheral surface of the protrusion 115 and elastically deforms the pair of locking pieces 12b away from each other. Subsequently, the locking portion 12c has the apexes P2, P3 of the protrusion 115. And move downward from the vertices P2 and P3. Then, as shown in FIG. 6, the pair of locking pieces 12 b are restored to the original shape by the restoring force, and the slide member 12 moves to the lower limit position (second position). Here, the slide member 12 is restricted from moving downward when the tip of the pressing piece 12 a abuts against the protrusion 115.

  On the other hand, when the slide member 12 at the locking position is pushed up, the locking portion 12c slides on the lower surface of the protrusion 114, and the pair of locking pieces 12b are elastically deformed in a direction approaching each other. Next, the locking portion 12c moves over the corner portion P1 of the protrusion 114 and moves above the corner portion P1, and as shown in FIG. 7, the pair of locking portions 12b are restored to their original shape by a restoring force. Return to. Further, the drawer portion 12 e of the slide member 12 moves to the upper limit position (third position) above the lower surface of the housing 11, and the drawer portion 12 e does not protrude from the lower surface of the housing 11. The slide member 12 is restricted from moving upward by the restricting portion 12g coming into contact with the lower end of the guide wall 118.

  When the power supply unit 5 is assembled to the case main body 110, the pair of protrusions 11a and protrusions 11c of the case main body 110 are inserted through the pair of notches 51a and notches 51b, respectively. Thereby, the substrate 51 is positioned with respect to the case main body 110. Subsequently, the board 51 has a rear surface abutting against the rib 11b of the protrusion 11a and the protrusion 11e of the case main body 110, and is screwed into the screw groove of the protrusion 11e through the insertion hole 51c of the substrate 51. Thus, the substrate 51 is fixed to the case main body 110. As described above, the power supply unit 5 is fixed to the case main body 110.

  In addition, a pair of substantially rectangular locking recesses 10 h are provided on the left and right sides of the upper and lower surfaces of the case body 110, respectively.

  Further, as shown in FIG. 3, the terminal unit 3 is connected to the power supply unit 5 by inserting the connection pin 313 into the connection connector 52 of the power supply unit 5. Here, the board 31 of the terminal unit 3 has an insertion hole 31c formed at a location facing the projection 11c of the case body 110, and an insertion hole 31d formed at a location facing the projection 11a. Then, the protrusion 11d of the protrusion 11c is inserted into the insertion hole 31c of the substrate 31 so that the substrate 31 is positioned with respect to the case body 110. Subsequently, the screw inserted through the insertion hole 31d of the substrate 31 is the case. The board 31 is fixed to the case main body 110 and the terminal unit 3 is fixed to the case main body 110 by being screwed into the thread groove of the protrusion 11 a in the main body 110.

  The external connection unit 4 connected to the terminal unit 3 by connecting the connection connectors 411 and 412 of the board 41 to the connection connectors 311 and 312 of the terminal unit 3 is connected to the right side surface of the case main body 110 and the pair of protrusions 11h. Between the two.

  As shown in FIG. 1, the case cover 120 is formed in a substantially rectangular box shape with an open rear surface, and a substantially center of the front surface projects forward, and a substantially rectangular parallelepiped storage space 12 </ b> A is formed on the rear surface side. In addition, a rectangular opening 121 is formed substantially at the front center of the case cover 120, and a substantially rectangular card insertion hole 10 e is formed on the right side of the opening 121. A substantially trapezoidal connector connection hole 10f is formed below.

  Then, on the inner surface side of the case cover 120, a rib formed of a wall body 18 formed along the edge portion and a facing piece 19 facing one end of the wall body 18, near the upper edge and the lower edge of the opening 121. 17 is formed. The wall body 18 is formed along the edge and has a substantially rectangular plate-shaped base 181 whose one end is connected to the left side surface of the case cover 120, and extends perpendicularly to the base 181 from the other end of the base 181. The extended portion 182 and a bent portion formed by bending the distal end of the extended portion 182 leftward. The facing piece 19 protrudes from the left side surface of the case cover 120 and faces the left end of the base portion 181 in the vertical direction.

  In addition, three insertion holes 126 are provided side by side in the vicinity of the rib 17, and a pair of cylindrical protrusions having a thread groove formed on the inner diameter portion below the three insertion holes 126. The part 127 is juxtaposed in the left-right direction. Furthermore, a pair of substantially rectangular connector insertion holes 10d are provided side by side on the lower side surface of the storage space 12A.

  An opening 122 is formed at the upper front end of the case cover 120, and an opening 123 is formed at the lower end of the front surface. Further, a substantially cylindrical storage portion 128 for storing the backup battery 34 is formed below the opening 122, and a screw having a thread groove formed on the inner diameter portion on both the left and right sides of the storage portion 128. Each hole 129 is formed.

  Further, on each side surface of the case cover 120, when the case cover 120 is covered with the case main body 110, a locking hole 10b is formed at a position facing the locking piece 11f of the case main body 110, respectively. Furthermore, a substantially rectangular notch 10 c that forms a connector connection hole 10 a together with the notch 11 i of the case main body 110 is formed at the rear end of the right side surface of the case cover 120.

  Next, a procedure for attaching the operation display unit 2 to the case cover 120 will be described. First, the liquid crystal panel 21 is covered with the opening 121, and then the left and right ends of the rubber connector 22 are inserted between the base 181 and the opposing piece 19 as shown in FIG. The front end is brought into contact with the rear surface of the liquid crystal panel 21. Here, the left end of the rubber connector 22 abuts on the inner surface (connection surface) of the case main body 120 and the right end abuts on the extending portion 182, thereby preventing a lateral displacement.

  Subsequently, the reflector 23 is inserted between the pair of rubber connectors 23, and the diffusion sheet 27 disposed on the front surface of the reflector 23 is brought into contact with the liquid crystal panel 21. Here, insertion holes 26b are formed in the vicinity of the four corners of the substrate 26 to which the reflector 23 is attached, and the insertion holes 26b are opposed to the protrusions 127 and the screw holes 129 of the case cover 120, respectively. To do.

  And the screw | thread 71 (refer FIG. 2) which penetrated the penetration hole 26b is fastened by the screw groove of the screw hole 129 or the protrusion 127, The board | substrate 26 is fixed to the case cover 120, and operation display is carried out to 12A of storage spaces. The unit 2 is stored and fixed.

  Further, the substrate 26 is pressed against the rear end of the rubber connector 22, the rubber connector 22 is sandwiched between the substrate 26 and the liquid crystal panel 21, and the liquid crystal panel 21 and the substrate 26 are connected to each other by a conductor embedded in the rubber connector 23. Are electrically connected. Here, as described above, the left and right ends of the front end of the rubber connector 22 are fitted and held between the base portion 181 of the rib 17 and the opposing piece 19, so that, for example, when the vibration or the like occurs, the rubber connector 22 falls down. Is prevented. In the present embodiment, the left end surface of the rubber connector 22 is in contact with the left surface of the case cover 120, but a connecting portion (connecting surface) that connects the left end of the base portion 181 and the facing piece 19 is formed. You may contact | abut on the left end surface of the rubber connector 22 to a connection part.

  Further, the three operation switches 24 mounted on the substrate 26 can be pressed from the front side of the case body 120 through the insertion hole 126 of the case cover 120. Then, the sheet 17 is affixed to substantially the center of the front surface of the case body 120. Here, the sheet 17 is formed in a substantially rectangular shape, and an opening 17 a having the same size as the opening is formed at a position facing the opening 121. Further, the sheet 17 is formed with bulged portions 17b protruding forward by, for example, embossing or the like at locations facing the three insertion holes 126, and the bulging portions 17b are inserted through the insertion holes 126, respectively. A display corresponding to the function of the operation switch 24 is made. The rear surface of the bulging portion 17b comes into contact with the operation switch 24, and the operation switch 24 can be pressed by pressing the bulging portion 17b.

  Subsequently, the connection connector 261 mounted on the substrate 26 and the connection connector 413 mounted on the substrate 41 are connected by a connection cable (not shown), whereby the operation display unit 2 and the external connection unit 4 are connected. The

  Then, as shown in FIG. 9, the case cover 120 is covered on the front surface of the case main body 110, and the locking protrusions 11 g of the locking pieces 11 f in the case main body 110 correspond to the locking of the case cover 120. Engage with the hole 10b. Thereby, the case cover 120 is fixed to the case main body 110. Here, the card slot 42 is exposed to the outside from the card insertion hole 10e formed on the front surface of the case cover 120, and the mini USB connector 43 is exposed to the outside from the connector connection hole 10f. Further, from the connector insertion hole 10d of the case cover 120, a socket connector 25 into which a plug connector connected to a current transformer described later is inserted and connected is exposed to the outside.

  As described above, in the control device A of the present embodiment, the rubber connector 22 is fitted between the base portion 181 and the opposing piece 19 of the rib 17 erected on the inner surface of the housing 11, so that the rubber connector 22 is inserted. Is prevented from falling in the vertical direction. Therefore, unlike the control device shown in the conventional example, there is no need to provide a separate auxiliary plate to prevent the rubber connector 22 from falling down. Furthermore, in order to fix the auxiliary plate to the housing 11, for example, a cutting is performed. There is no need to provide an engaging portion such as a notch in the casing 11 and the auxiliary plate. Therefore, the control device A of the present embodiment can suppress the increase in the number of parts and prevent the rubber connector 22 from falling down with a simple structure.

  Further, a transparent substantially rectangular box-shaped front cover 16 having an open rear surface is covered at the front center of the case cover 120.

  Further, the terminal blocks 32 and 33 of the terminal unit 3 are exposed from the openings 122 and 123 of the case cover 120, and the screw terminal portions 32 a of the terminal block 32 and the front surfaces of the screw terminal portions 33 a and 33 b of the terminal block 33 are exposed. Covering substantially rectangular plate-shaped terminal covers 13, 14, 15 are disposed.

  In addition, a connector connection hole 10a including a notch 11i of the case main body 110 and a notch 10c of the case cover 120 is formed on the right side surface of the housing 11. From the connector connection hole 10a, the external unit 4 is connected. The connecting connector 44 is exposed to the outside.

  Next, an attachment method when attaching the control device A of the present embodiment to the DIN rail 100 will be described. As shown in FIG. 10, the DIN rail 100 includes a long rectangular plate-like base portion 101, a pair of extending pieces 102 extending substantially perpendicularly to the base portion 101 from each long side of the base portion 101, and extending. It is comprised from the latching piece 103 which bends the front-end | tip of the installation piece 102 at the substantially right angle to the outward direction.

  First, the slide member 12 is pulled down to the lower limit position (FIG. 6), and the locking piece 103 above the DIN rail 100 is inserted between the locking claw 116 of the case body 110 and the bottom surface of the rail groove 112. At that time, the locking piece 103 is pressed forward by the bulging portion 117 formed in the rail groove 112, so that it is difficult to come out from between the locking claw 116 and the bottom surface of the rail groove 112. . Next, as shown in FIG. 11, the slide member 12 is moved upward from the lower limit position and slid to the lock position (FIG. 5), whereby the lock piece 12 d of the slide member 12 is moved to the bottom surface of the rail groove 112. The locking piece 103 below the DIN rail 100 is held between the two. As described above, the control device A of the present embodiment is fixed to the DIN rail 100.

  And the drawer | drawing-out part 12e of the slide member 12 protrudes below rather than the lower surface of the housing | casing 11 in the latching position. Therefore, when the locking state of the slide member 12 is released, the slide member 12 is pulled downward by grasping the drawer 12e, and the locking of the rail locking piece 12d to the DIN rail 100 is released. Thereby, the latching with respect to the control apparatus A of the slide member 12 is cancelled | released. Note that the slide member 12 can also be pulled down by inserting a flathead screwdriver or the like into the insertion hole 12f formed in the drawer portion 12e.

  In addition, the control device A of the present embodiment can be fixed in the control panel or the like using a mounting bracket other than the DIN rail 100. As an example of the bracket, as shown in FIG. 12, a base plate 201 having a substantially rectangular plate shape that is long in the vertical direction, and a pair of elastic sandwiching pieces 202 arranged side by side on the rear surface upper end side of the base plate 201, There is a bracket 200 including locking claws 203 arranged side by side on the lower end side of the rear surface.

  The base plate 201 has a pair of substantially semicircular cutouts 204 formed at the upper end thereof, and a pair of insertion holes 205 provided side by side at the lower end of the base plate 201.

  The elastic sandwiching piece 202 is formed in a substantially L shape with a tip extending forward from the base plate 201 bent upward, and bulges downward at the bent portion. A bulging portion 206 is formed.

  The locking claw 203 is cut and raised forward from the base plate 201, and a claw portion 207 bent upward is formed at a tip portion thereof. Here, the dimension between the latching claw 203 and the elastic pinching piece 202 is set to be approximately equal to the dimension in the vertical direction of the control device A in the present embodiment.

  And when fixing the control apparatus A of this embodiment using the bracket 200, first, the slide member 12 is moved to an upper limit position (FIG. 7). Then, as shown in FIG. 7, the lower end of the drawer portion 12 e of the slide member 12 is positioned above the lower surface of the housing 11, and the slide member 12 does not protrude below the lower surface of the housing 11. Therefore, the latching claw 203 of the bracket 200 can be prevented from interfering with the slide member 12, and the housing 11 can be latched by the bracket 200.

  Subsequently, as shown in FIG. 13, the pair of locking claws 203 are respectively inserted into the pair of locking recesses 10 h on the lower surface of the housing 11, and then the bulging portions 206 of the pair of elastic holding pieces 202 are mounted on the housing. The body 11 is fitted into a pair of locking recesses 10 h on the upper surface. As a result, the control device A according to the present embodiment is locked to the elastic sandwiching piece 202 and the locking claw 203 and is held by the bracket 200, and a screw (not shown) that passes through the notch 204 and the insertion hole 205 of the bracket 200. Is screwed and fixed in the distribution board.

  As described above, when the DIN rail 100 is used to fix the control device A of the present embodiment, the slide member 12 moves between the locking position and the lower limit position, and the locking position and the lower limit position are changed. The drawer portion 12 e of the slide member 12 always protrudes downward from the lower surface of the housing 11. And the control apparatus A can be attached or detached with respect to the DIN rail 100 by grasping the drawer | drawing-out part 12e and raising / lowering the slide member 12. As shown in FIG.

  On the other hand, when the bracket 200 is used to fix the control device A, the slide member 12 is provided at the upper limit position, and the drawer portion 12 e does not protrude downward from the lower surface of the housing 11. Therefore, the drawer 12e of the slide member 12 does not interfere with the bracket 200, and the control device A can be fixed to the bracket 200.

  Thus, the control device A of the present embodiment can be attached to both the DIN rail 100 and the bracket 200, and the degree of freedom when the control device A is attached to the inside of the panel can be improved.

  Further, as shown in FIG. 14, the control device A of the present embodiment is supplied with driving power from a commercial power supply E <b> 1 connected to the terminal portion 33 b of the terminal block 32. The terminal 33a of the terminal block 33 is connected to power lines L1 and L2 that connect the load D1 and the power source E2, and a neutral line N that connects the power source E2 and the load D1, respectively. Is input to the control device A.

  Further, the socket connector 25 of the control device A is inserted and connected with a connector (not shown) for connecting to current transformers CT1 and CT2 for detecting a current flowing to the load D1 via the power supply lines L1 and L2. Then, a current detection signal is input to the control device A from the current transformers CT1 and CT2.

  Further, on the substrate 31 of the terminal unit 3, as shown in FIG. 15, the varistors ZNR1 to ZNR3, the switching circuit J1, the transformer T, the capacitors C1 and C2, the PF detection circuit J3, the analog circuit J2, A storage unit M is mounted. Here, the power supply circuit K1 is formed from the varistors ZNR1 to ZNR3, the switching circuit J1, the capacitors C1 and C2, and the transformer T. The power supply circuit K1 converts AC power input through the terminal block 33 into DC power, and supplies driving power to the internal circuit K2 including the analog circuit J2, the PF detection circuit J3, and the storage unit M.

  Then, the PF detection circuit J3 calculates a power factor based on the current detection signal and the voltage detection signal, and the analog circuit J2 calculates power, electric energy, active power, based on the current detection signal, the voltage detection signal, and the power factor, Reactive power etc. are calculated. Hereinafter, the power, power amount, active power, reactive power, and the like are referred to as power information. Then, a power information signal for displaying power information on the liquid crystal panel 21 is output from the terminal unit 3 to the operation display unit 2. Thereby, the power information regarding the load D1 is displayed on the liquid crystal panel 21. The power information is stored in a storage unit M including a FROM, an EEP-ROM, or the like.

  In the control device A of the present embodiment, as shown in FIG. 9, an external memory S such as a portable memory card can be mounted in the card slot 42 via the card insertion hole 10e. Then, the worker can copy the power information stored in the storage unit M to the memory card M and collect the power information with an external device such as a personal computer.

(Embodiment 2)
The control unit of the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 16 and 17, the control unit of the present embodiment includes a control device (master device) A of the first embodiment and an extension unit (slave device) B connected to the control device A. Since the configuration other than the extension unit B is the same as that of the first embodiment, the same reference numerals are used and description thereof is omitted.

  The extension unit B includes a casing 81 formed in a substantially rectangular box shape whose dimension in the left-right direction is approximately half that of the control device A, and a substrate (not shown) housed in the casing 81. Further, for example, the extension unit B is set to have the same external dimensions as a single type of so-called distribution board agreement dimensions (dimensions defined in the JIS standard as the standard of the distribution board internal unit). Here, the extension unit B can be held by the DIN rail 100 or the bracket 200 in the same manner as the control device A, but the necessary configuration and holding method for holding are the same as those of the control device A. Therefore, the description is omitted.

  In addition, a connecting connector 82 is mounted on the board of the extension unit B so as to penetrate the left side surface of the housing 81 and protrude to the outside and to be connected to the connecting connector 44 of the control device A. Then, the connection connector 82 of the extension unit B is connected to the connection connector 44 of the control device A, so that drive power is supplied to the extension unit B via the control device A.

  As shown in FIG. 18, a socket connector 83 that is exposed to the outside through a connector insertion hole 81 a formed on the outer surface of the housing 81 is mounted on the board of the extension unit B. The socket connector 83 is inserted and connected with a connector (not shown) for connecting current transformers CT3 and CT4 for detecting a current flowing to the load D2 via the power lines L1 and L2, and the current transformer CT3 is connected to the extension unit B. A current detection signal is input from CT4.

  In the extension unit B, the internal circuit K3 converts the current detection signal into current information and outputs the current information to the control device A. Subsequently, in the control device A, the analog circuit J2 and the PF detection circuit J3 create power information related to the extension unit B based on the current information input from the extension unit B, and store the power information in the memory card. To do.

  As described above, in the control unit of the present embodiment, the drive power can be supplied to the extension unit B and the drive power can be supplied to the extension unit B by connecting the control device A and the extension unit B with a connector. There is no need to provide a separate power line. Therefore, the wiring is not complicated and the workability can be improved. In this embodiment, one extension unit B is used. However, by connecting another extension unit B to a connection connector (not shown) provided on the right side of the extension unit B, a plurality of extension units B can be connected. It is also possible to measure the amount of electric power for more loads by connecting them.

  Further, since the power information of the extension unit B can be displayed on the liquid crystal panel 21 of the control device A, the data of both the control device A and the extension unit B can be confirmed by looking at the liquid crystal panel 21 of the control device A. Can be confirmed easily.

  Conventionally, a control device (watt-hour meter) A is required for each load. However, in this embodiment, an expansion unit B having approximately half the width of the control device A is added in accordance with an increase in load. What is necessary is to save space. Here, since the extension unit B does not need to include the operation display unit 2 and the power supply unit 5 provided in the control device A, the size of the extension unit B can be suppressed.

  Further, as shown in FIG. 19, the control unit A of the present embodiment can be connected to a personal computer (hereinafter referred to as a PC) 300 by using a mini USB connector 43 provided in the control device A. . Here, the electric power supplied from the commercial power supply E1 to the control device A via the terminal block 33 is converted into a desired drive voltage by the transformer T included in the power supply circuit K4 included in the control device A, and the internal circuit K2 To be supplied. A USB insulation circuit K4 is provided between the mini USB connector 43 and the internal circuit K2 to provide insulation between the control device A and the PC 300, thereby enhancing safety.

  Then, when the operator operates the PC 300, the power information related to the control device A stored in the storage unit of the control device A and the power information of the expansion unit B stored in the memory card are output to the PC 300. Can do. Therefore, it is possible to easily collect data.

  Further, since the setting operation of the control unit A and the extension unit B can be performed by the operation of the PC 300, it is not necessary to repeat the setting operation for each control unit A and the extension unit B, and the setting operations can be easily performed collectively. Can be done.

A Control device 11 Housing 21 Liquid crystal panel 22 Rubber connector 26 Board (printed board)
121 opening 124 rib (wall)
125 Nipping rib (wall)

Claims (3)

A hollow box-shaped housing having an opening;
A liquid crystal panel disposed in the casing and exposed to the outside from the opening;
A rubber connector in which a conductor is embedded, the conductor is exposed to the outside from one end and the other end, and one end abuts on the other surface of the liquid crystal panel;
Abutting on the other end of the rubber connector, and electrically connected to the liquid crystal panel via the conductor, and a substrate for transmitting and receiving an electrical signal to and from the liquid crystal panel,
A control device, wherein a rib into which at least a part of one end of the rubber connector is fitted is formed on an inner surface of the housing. The rubber connector is formed in a plate shape,
2. The control device according to claim 1, wherein the rib includes a pair of wall portions opposed to one plate surface of the rubber connector and the other plate surface opposed to the one plate surface. 3. The control according to claim 2, wherein the rib has a connecting surface that connects the pair of wall portions to face a side end surface of the rubber connector along a facing direction of the liquid crystal panel and the substrate. machine.

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