JP6327554B2 - Terminal device and distribution board - Google Patents

Description

  The present invention relates to a terminal device of a quick connection system and a distribution board equipped with the terminal device.

  As a conventional example, a distribution board described in Patent Document 1 is illustrated. The distribution board described in Patent Literature 1 includes a box (cabinet), internal devices (main switch and branch switch) housed in the cabinet, a ground terminal (ground terminal block), and a mounting bracket. .

  The ground terminal block has a plurality of ground terminals for connecting a ground wire, and is attached to a side plate or bottom plate of a cabinet (a box constituting the cabinet) using a mounting bracket. The ground terminal is configured as a quick connection terminal (also referred to as a screwless terminal) including a terminal plate and a lock spring. In the conventional example, the number of ground terminal blocks corresponding to the number of ground wires required for the distribution board is attached to the cabinet. The ground terminal block is connected to a ground wire that has been grounded outside the cabinet.

Japanese Patent Laid-Open No. 2003-244808

  By the way, in the conventional example, when a plurality of ground terminal blocks are attached to the cabinet of the distribution board, the plurality of ground terminal blocks are sent and wired by electric wires. However, when there is not enough room in the cabinet, it is necessary to make the wire as short as possible in order to prevent the extra length of the wire from protruding from the cabinet, leading to a decrease in workability.

  The present invention has been made in view of the above problems, and an object thereof is to improve workability of wiring work in a cabinet.

The terminal device of the present invention includes a terminal block having one or more quick connection terminals and a connecting plate. The quick connection terminal includes a terminal plate and a lock spring. The terminal block includes a box-shaped case that houses the quick connection terminal, a projecting piece that is electrically connected to the terminal plate and protrudes outside the case, and a terminal screw that is screwed into a screw hole provided in the projecting piece. Is provided. The connecting plate is made of a rectangular plate having conductivity, and a plurality of insertion holes through which the screw portion of the terminal screw can be inserted and the head portion of the terminal screw cannot be inserted, and the diameter of the screw portion. A plurality of notches that are large and are connected to each of the plurality of insertion holes one by one. The plurality of cutouts are provided at least one on each of two sides along the longitudinal direction of the connecting plate.

  The distribution board of the present invention includes the terminal device and a cabinet that houses the terminal device and internal devices. In the cabinet, the terminal devices are arranged at both ends facing each other with the internal device interposed therebetween.

  INDUSTRIAL APPLICABILITY The terminal device and the distribution board of the present invention have an effect that it is possible to improve workability of wiring work in the cabinet.

It is a disassembled perspective view which shows embodiment of the terminal device which concerns on this invention. It is a perspective view same as the above. It is a perspective view of the connection board in the same as the above. It is a top view which shows embodiment of the distribution board which concerns on this invention. It is a top view in the state where the terminal device same as the above is not attached.

  Hereinafter, embodiments of a terminal device and a distribution board according to the present invention will be described in detail with reference to the drawings.

  First, the terminal device 1 of this embodiment is demonstrated with reference to FIGS. However, in the following description, in FIG.

  The terminal device 1 includes a terminal block 10 and a connecting plate 2. As shown in FIG. 1, the terminal block 10 includes six lock springs 11, a first terminal plate 12, a second terminal plate 13, a case 14, and terminal screws 15. The lock spring 11 includes a belt-shaped central piece 110, a pressing piece 111 extending in an S shape from the lower end of the central piece 110, and a locking piece 112 extending in a J shape from the upper end of the central piece 110. Are integrally formed.

  The first terminal plate 12 includes a rectangular plate-shaped bottom plate 120, a first support piece 121 that rises upward from the front end edge of the bottom plate 120, a second support piece 122 that rises upward from the rear end edge of the bottom plate 120, and the bottom plate 120. And L-shaped terminal strips 123 projecting from the left and right ends of each. At the upper end portion of the first support piece 121, five concave portions 1210 are provided so as to be arranged at equal intervals in the left-right direction. Similarly, five concave portions 1220 are provided at the upper end portion of the second support piece 122 so as to be arranged at equal intervals in the left-right direction. Further, the two terminal pieces 123 are provided with screw holes 1230 penetrating in the thickness direction (vertical direction).

  The second terminal plate 13 has a rectangular flat bottom wall 130, a contact piece 131 that rises upward from the front edge of the bottom wall 130, and L-shaped terminal pieces 132 that protrude from the left and right ends of the bottom wall 130, respectively. . The upper end portion of the contact piece 131 is provided so that five concave portions 1310 are arranged at equal intervals in the left-right direction, and a portion excluding the concave portion 1310 is bent outward and L-shaped. Further, the two terminal pieces 132 are provided with screw insertion holes 1320 penetrating in the thickness direction (vertical direction). Furthermore, L-shaped caulking pieces 133 projecting downward are respectively provided at both front and rear edges of each terminal piece 132.

  The second terminal board 13 is coupled to the first terminal board 12. That is, the bottom wall 130 of the second terminal plate 13 is placed on the bottom plate 120 of the first terminal plate 12, and the terminal pieces of the second terminal plate 13 are placed on the terminal pieces 123 of the first terminal plate 12. 132 is placed. Then, the caulking piece 133 of the second terminal plate 13 is caulked, whereby the terminal piece 132 of the second terminal plate 13 and the terminal piece 123 of the first terminal plate 12 are fixed, and the first terminal plate 12 and the first terminal plate 12 are fixed. A two-terminal board 13 is coupled (see FIG. 2).

  The case 14 is formed of a synthetic resin material in the shape of a rectangular box whose longitudinal direction is the left-right direction and whose lower surface is open. The top plate 140 of the case 14 is provided with six circular through holes 141 arranged at equal intervals in the left-right direction. Furthermore, six insertion holes 143 that are inclined toward the respective through holes 141 are provided at the boundary between the top plate 140 and the front wall 142 so as to be arranged at equal intervals in the left-right direction. In addition, on the lower surface of the top plate 140, five partition walls (not shown) that divide a set of adjacent through holes 141 and insertion holes 143 are suspended downward. That is, the inside of the case 14 is divided into six sections by these five partition walls, and one lock spring 11 is stored in each section.

  Further, two L-shaped hooking pieces 145 are provided on the front wall 142 and the rear wall 144 of the case 14 so as to protrude downward. The hook piece 145 provided on the front wall 142 forms a gap (groove 146) between the lower end of the front wall 142 (see FIG. 2). Similarly, the hook piece 145 provided on the rear wall 144 also forms a gap (groove 146) between the lower end of the rear wall 144.

  Next, a procedure for assembling the terminal block 10 will be briefly described. First, the first terminal plate 12 and the second terminal plate 13 are joined by caulking pieces 133 being caulked to the terminal pieces 123. On the other hand, one lock spring 11 is inserted into each of the six compartments in the case 14. The first support piece 121, the second support piece 122, and the contact piece 131 are inserted into the case 14, and the lower opening of the case 14 is the bottom plate 120 of the first terminal plate 12 and the bottom wall of the second terminal plate 13. Blocked at 130. Furthermore, the terminal block 10 is assembled by fixing the 1st terminal board 12, the 2nd terminal board 13, and the case 14 by appropriate methods, such as press injection and adhesion | attachment.

  The terminal block 10 presses the conductor of the ground wire inserted from the through hole 141 against the contact piece 131 of the second terminal plate 13 by the pressing piece 111 of the lock spring 11 and brings the tip of the locking piece 112 into contact. The conductors are connected to the terminal plates 12 and 13 by preventing them from coming off. Further, when the locking piece 112 is bent by a tool (driver or the like) inserted through the insertion hole 143, the tip of the locking piece 112 is separated from the conductor, so that the ground wire can be pulled out from the through hole 141. That is, in the terminal block 10 in the present embodiment, the two terminal plates 12 and 13 and the lock spring 11 constitute a quick connection terminal (screwless terminal).

  As shown in FIG. 3, the connecting plate 2 is formed of a rectangular plate-like metal plate as a whole, and semi-oval insertion grooves 20 are formed at both ends in the longitudinal direction (left-right direction in FIG. 3). . The two insertion grooves 20 are formed point-symmetrically with respect to the center of the connecting plate 2. However, the insertion groove 20 includes a circular insertion hole 200 and a rectangular notch 201 connected to the insertion hole 200. In addition, although the circular hole and the rectangular hole have penetrated in the center of the connection board 2, these holes are used for the positioning at the time of processing the metal plate and forming the insertion groove | channel 20. FIG.

  As shown in FIG. 2, the connecting plate 2 is fastened together with the terminal pieces 123 and 132 of the terminal block 10 by the terminal screw 15 through which the screw portion 150 is inserted into one insertion hole 200. Further, the connecting plate 2 is fastened together with the terminal pieces 123 and 132 of another terminal block 10 by terminal screws (not shown) inserted through the other insertion holes 200. That is, the two terminal blocks 10 are coupled (electrically connected) by the one coupling plate 2. Therefore, in the terminal device 1 of the present embodiment, the two terminal blocks 10 can be electrically connected to each other without using an electric wire for feed wiring.

  As described above, the terminal device 1 according to the present embodiment includes the terminal block 10 having one or more quick connection terminals and the connecting plate 2. The quick connection terminal includes a terminal plate (first terminal plate 12 and second terminal plate 13) and a lock spring 11. The terminal block 10 is electrically connected to the box-shaped case 14 for housing the quick-connection terminals and the terminal plates (the first terminal plate 12 and the second terminal plate 13) and protrudes out of the case 14 (first piece). A terminal piece 123) and a terminal screw 15 screwed into a screw hole 1230 provided in the protruding piece. The connecting plate 2 is made of a conductive plate material, and has a plurality of insertion holes 200 through which the screw portions 150 of the terminal screws 15 can be inserted and the head portions 151 of the terminal screws 15 cannot be inserted.

  Since the terminal device 1 of the present embodiment is configured as described above, the terminal plates (the first terminal plate 12 and the second terminal plate 13) of the two terminal blocks 10 are connected to each other by the connecting plate 2 to be electrically connected. Connected. Therefore, since it is possible to send and wire to a plurality of terminal devices 1 without using electric wires, it is possible to improve the workability of wiring work in a cabinet (box 4) of the distribution board 3 described later.

  Moreover, in the terminal device 1 of this embodiment, it is preferable that the connecting plate 2 has a notch 201 that is larger than the diameter of the screw portion 150 and is connected to the insertion hole 200.

  Since the connecting plate 2 has the notch 201 and rotates around the terminal screw 15 inserted into one insertion hole 200 as a fulcrum, the connecting plate 2 allows the terminal screw 15 to pass through the other insertion hole 200 through the notch 201. Can do. Therefore, the terminal device 1 of the present embodiment can further improve the workability of the wiring work.

  Next, the distribution board 3 of this embodiment is demonstrated with reference to FIG. 4, FIG. The distribution board 3 of the present embodiment is a so-called residential distribution board (housing board), and includes a cabinet, an internal unit block 5, a terminal device 1, and the like. However, in the following description, the up and down direction and the left and right direction in FIGS.

  The cabinet includes a box 4 and doors and covers (not shown). The box 4 includes a rectangular frame-shaped bottom plate 40 and a peripheral wall 41 that rises forward from the periphery of the bottom plate 40. However, the bottom plate 40 and the peripheral wall 41 are integrally formed as a synthetic resin molded body. The bottom plate 40 has a rectangular window 42 opened. A power cable (not shown) is introduced into the box 4 through the window 42.

  A plurality of insertion holes 43 are provided at equal intervals on the upper and lower edges of the window 42 in the bottom plate 40. In addition, a plurality (three in the illustrated example) of attachment bars 44 are provided on the bottom plate 40 so as to be bridged in the vertical direction. The attachment bar 44 is formed in a long and narrow plate shape with a metal material, and the insertion holes 440 are provided at both ends in the longitudinal direction. Then, a bolt (not shown) that is inserted through each insertion hole 440 from the front is inserted into the insertion hole 43 of the bottom plate 40, and a nut (not shown) is tightened on the bolt protruding to the rear side of the bottom plate 40. Thus, each mounting bar 44 is fixed to the bottom plate 40.

  The inner unit block 5 includes one main switch 50, a plurality of branch switches 51, a first mounting plate 52, a second mounting plate 53, a conductive bar 54, and the like. The first attachment plate 52 is formed of a metal plate, and the main switch 50 is attached to the front surface thereof. Further, the first mounting plate 52 is screwed to the mounting bar 44 whose left and right ends are the left end and the central mounting bar 44.

  The second attachment plate 53 is formed of a rectangular metal plate, and the branch switch 51 and the conductive par 54 are attached to the front surface thereof. The second mounting plate 53 is screwed to a mounting bar 44 whose left and right ends are central and a mounting bar 44 which is right end.

  As shown in FIG. 4, the terminal device 1 is disposed on both ends of the bottom plate 40 of the box 4 that face each other in the vertical direction across the window 42. As shown in FIG. 5, a plurality of rectangular attachment holes 45 arranged in the left-right direction are provided in the upper and lower ends of the bottom plate 40 so as to be arranged in two rows. Further, circular through holes 46 are provided at equal intervals in the left-right direction at the upper and lower ends of the bottom plate 40.

  Then, the procedure which constructs the terminal device 1 of this embodiment on the distribution board 3 of this embodiment is demonstrated easily.

  First, the operator inserts four terminal holes 10 into the two mounting holes 45 in the upper row of the bottom plate 40 and the two mounting holes 45 in the lower row adjacent to the two mounting holes 45 in the vertical direction. One hook piece 145 is inserted separately. Thereafter, the operator translates the terminal block 10 in the left-right direction in a state where the four hook pieces 145 are respectively inserted through the mounting holes 45. Then, since the bottom plate 40 is fitted in the groove 146 of each hook piece 145, the terminal block 10 is attached to the bottom plate 40.

  Next, the operator connects the terminal blocks 10 adjacent in the left-right direction with the connecting plate 2. At this time, the terminal block 10 is fixed to the bottom plate 40 by inserting the screw portion 150 of the terminal screw 15 into the through hole 46 of the bottom plate 40.

  As described above, the distribution board 3 of the present embodiment includes the terminal device 1 and the cabinet (box 4) that houses the terminal device 1 and internal devices (the main switch 50 and the branch switch 51). In the cabinet (box 4), the terminal devices 1 are arranged at both ends (upper end and lower end) facing each other with the internal devices (main switch 50 and branch switch 51) interposed therebetween.

  The distribution board 3 of the present embodiment is configured as described above, and can send and wire to a plurality of terminal devices 1 without using electric wires, so that the workability of wiring work in the cabinet (box 4) can be improved. Can be planned.

DESCRIPTION OF SYMBOLS 1 Terminal device 2 Connection board 10 Terminal block 11 Lock spring 12 1st terminal board (terminal board)
13 Second terminal board (terminal board)
14 Case 15 Terminal screw 123 Terminal piece (projection piece)
150 Screw part 151 Head 200 Insertion hole 1230 Screw hole

Claims (2)

A terminal block having one to a plurality of quick connection terminals, and a connecting plate;
The quick connection terminal includes a terminal plate and a lock spring,
The terminal block includes a box-shaped case that houses the quick connection terminal, a projecting piece that is electrically connected to the terminal plate and protrudes outside the case, and a terminal screw that is screwed into a screw hole provided in the projecting piece. With
The connecting plate is made of a rectangular plate having conductivity, and a plurality of insertion holes through which the screw portion of the terminal screw can be inserted and the head portion of the terminal screw cannot be inserted, and the diameter of the screw portion. A plurality of cutouts which are large and connected to each of the plurality of insertion holes one by one;
The terminal device, wherein the plurality of notches are provided at least one each on each of two sides along the longitudinal direction of the connecting plate . The terminal device according to claim 1, and a cabinet that houses the terminal device and an internal device, wherein the terminal device is disposed at both ends facing each other across the internal device. Distribution board.

Images