JPH0141176Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal board for connecting wiring to an electronic circuit provided in a child device such as a counter or a programmable controller.

Conventional terminal boards of this type generally consist of a terminal block made of synthetic resin with a plurality of terminal fittings (for example, 10) embedded in it, and a terminal screw inserted into each terminal fitting. After connecting to a printed circuit board or the like through a through hole in the front panel of the device, it was fixed with two or more screws from the front of the electronic device panel.

By the way, there are various sizes of electronic devices to which such terminal boards are attached, and the size of the mounting location and the number of wires are also not constant. For this reason, it is necessary to prepare terminal boards of various sizes that can accommodate the size of the installation location and the number of wires.
Furthermore, when the number of wiring lines is small, it is extremely uneconomical as many unused terminals remain. In addition, since the terminal board is fixed to the front panel of the electronic device with screws, installation and maintenance are time-consuming and troublesome, and there is also the risk of inserting it into the socket with the left and right sides reversed. There were many problems, including:

The present invention was developed with the aim of solving the conventional problems as described above.The size can be adjusted according to the installation location and the number of wires, the number of terminals can be increased or decreased as appropriate, and the screws can be removed. To provide a terminal board that can be attached and fixed to a panel of a device with a single touch without using it, and there is no risk of inserting it backwards into a socket.

In order to achieve the above object, the terminal board for electronic equipment according to the present invention has a protrusion on one side and a hole in which the protrusion fits on the other side, and the terminal block has an apex biased to one side. A terminal plate is formed by attaching a terminal fitting or the like to a recess provided therein, and a main body and an arm are formed into a substantially U-shape, and a locking portion is provided at the free end of the arm, and a locking portion is provided at the free end of the arm. a pair of side blocks having a hole or a protrusion that fits into the protrusion or hole provided on the terminal board, and a protrusion or hole on the side surface of the other body that fits into the hole or protrusion provided on the terminal board; , and after sequentially fitting the protrusions and holes of the adjacent terminal plates, the holes or protrusions of the side block are fitted into the protrusions or holes of the terminal plates at both ends to connect them together. That is. The present invention will be explained below using the drawings.

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a sectional view taken along line A-A in FIG. In the figure, 1a, 1b, 1c,...
...1n is a terminal board, 3a, 3b are side blocks, 4a, 4b, 4c, ...4n are covers for terminal fittings (hereinafter, terminal boards 1a to 1n are indicated by 1 and covers 4a to 4n are indicated by 4). be). Reference numeral 5 denotes a printed board fixed within the electronic device, and 6 a socket attached to the printed board 5, which is fitted into a cutout 71 provided in a panel 7 of the electronic device.

The terminal block 11 constituting the terminal board 1 is formed by molding a synthetic resin material, and has a pentagonal shape with the apex biased to one side, as shown in FIG.
A substantially dogleg-shaped recess 13 is provided parallel to 2 and opening downward. 14 is the wiring insertion port,
15 is an operation port into which the head of a screw 28 for fixing the wiring is inserted; 16a and 16b are locking portions of the cover 4;
17 and 18 are locking parts of the terminal fitting 21; 19 are a plurality of protrusions provided on one side of the terminal block 11; 20
is a hole into which the projection 19 provided on the other surface fits.

4 is a cover for the terminal fitting 21, which is formed by molding synthetic resin. As shown in FIG. A collar 42 is formed which fits into the stop portions 16a and 16b.

21 is a terminal fitting made of a conductive material, and as shown in FIG. 7, the socket 6 is bent into a U-shape.
It consists of a connection part 22, a dog-shaped wiring connection piece 23 formed on the upper part of the connection part 22, and a locking piece 24 provided on the opposite side of the connection piece 23. Reference numeral 25 denotes a square-shaped movable element made of a conductive material. As shown in FIG. 8, a screw hole 26 is provided on the upper side, and a tongue piece 27 bent downward is formed on the lower side.
28 is a flat screw with a seat having a seat plate 29 on the lower surface of the head, and is screwed into the screw hole 26 of the movable element 25.

In order to assemble the terminal board 1 with the above-mentioned parts, first insert the terminal fitting 21 into the hollow part of the movable element 25.
After inserting the connecting piece 23, the connecting piece 22 of the terminal fitting 21 is inserted into the hollow part 41 of the cover 4. In this state, the collar 42 of the cover 4 is fitted to the locking parts 16a, 16b of the terminal block 11, and the movable element 25, into which the screw 28 is screwed and the connecting piece 23 of the terminal fitting 21 is inserted, is attached to the terminal block 11. The free end of the connecting piece 23 is engaged with the locking part 17, and the locking piece 24 is engaged with the locking part 18. The state at this time is shown in FIG.

The side blocks 3a and 3b are formed by molding a synthetic resin material, and as shown in FIGS.
a, 32b are formed into a U-shape, and the arms 32a, 3
2b has a spring function, and the arms 32a, 3
Locking portions 33a and 33b projecting outward are formed at the free ends of 2b, respectively. The locking portions 33a and 33b are provided below the lower edge of the terminal block 11 by the thickness t of the panel 7 (see FIG. 2). 34 is a terminal block 1 provided on the side surface of the main body 31a of one side block (for example, 3a)
The projection 35 that fits into the hole 20 of the terminal block 1 is a hole into which the projection 19 of the terminal block 11 provided on the side surface of the main body 31b of the other side block (for example, 3b) fits.

Next, the assembly order of the terminal board according to the present invention and the method of attaching it to the panel will be explained. First, as shown in FIG. 4, the terminal plate 1 is manufactured by attaching the terminal fitting 21, the movable element 25, and the cover 4 to each terminal block 11. Next, each protrusion 1 of the terminal board (for example, 1a to 1n) is attached according to the size of the installation place and the number of wires.
9 are respectively fitted into the holes 20 of the adjacent terminal plates 1b to 1n to connect them. Finally, terminal board 1 on both sides
The holes 35 or protrusions 34 of the side blocks 3a, 3b are fitted into the protrusions 19 or holes 20 of the side blocks 3a, 1n to connect them together. Thereby, as shown in FIGS. 1 and 2, a terminal board having a desired size and a desired number of terminals can be obtained.

In order to connect the terminal board configured in this way to a socket provided in an electronic device, the arms 32a and 32b of the side blocks 3a and 3b provided on both sides of the terminal board are used.
Holding the cover 4 between the thumb and forefinger, insert the cover 4 through the cutout 71 of the panel 7 and connect it to the socket 6, as shown in FIG. At the same time, while pressing the arms 32a, 32b of both side blocks 3a, 3b inward, the free ends of the arms 32a, 32b of the side blocks 3a, 3b are inserted into the locking holes 7 provided on both sides of the cutout 71 of the panel 7, as shown in FIG.
2a, 72b. If you release your finger after the connection between the terminal board and the socket 6 is completed, the arms 32a, 3
2b expands outward, and the locking portions 33a and 33b engage with the panel 7, so that the terminal board is securely attached to the panel 7. To remove the terminal board from socket 6,
Arm 3 of side blocks 3a and 3b with thumb and forefinger
2a and 32b, press them inward, and pull out the terminal board.

In order to connect the wiring to the terminal fitting 21, a screwdriver is inserted through the operating port 15 and the screw 28 is rotated to move the movable element 25 downward along the wall surface of the recessed part 13 of the terminal block 11. Next, the lead wire is inserted from the connection port 14 between the lower side of the movable element 25 and the connection piece 23 of the terminal fitting 21, and the screw 28 is rotated in the opposite direction to move the movable element 25 upward. The lead wire is securely connected and fixed between the lower side of the movable element 25 and the connecting piece 23 of the terminal fitting 21.

In the above description, the case where the terminal block is formed into a pentagonal shape is shown, but other shapes may be used as long as the apexes are biased to one side. Furthermore, the structures of the terminal fittings, movable elements, and covers mounted on the terminal block are not limited to those in the embodiments, and other structures may be used as long as they have similar functions. It goes without saying that the shapes, dimensions, etc. of other parts are not limited to the above-mentioned embodiments, and can be changed as appropriate without departing from the gist of the present invention.

As is clear from the above description, according to the present invention, the following remarkable effects can be achieved.

(1) It is easy to connect the terminal boards according to the installation location, number of wires, etc., so there is no need to prepare terminal boards of various sizes as in the past, and there is no need to use terminals due to unused terminals. Since there is no waste, costs can be reduced.

(2) Since it can be attached and fixed to the panel with one touch without using screws, installation and maintenance are extremely easy, and the number of man-hours can be reduced.

(3) The apex of the terminal block is biased to one side and the shape is asymmetrical, so there is no risk of accidentally inserting it in the wrong direction.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a front view, Fig. 3 is a side view, Fig. 4 is a sectional view taken along line A-A in Fig. 2, and Fig. 5a is an embodiment of the terminal block. Fig. 6a is a longitudinal sectional view of an embodiment of the cover, b is a side view partially shown in cross section,
FIG. 7a is a front view of an embodiment of the terminal fitting, b is a side view thereof, and FIG. 8a is a front view of an embodiment of the movable element.
b is the C-C sectional view, c is the front view of the screw, No. 9
Figures a and b each show a side view of an embodiment of the side block. 1, 1a, 1b: terminal board, 11: terminal block, 1
3: Concave portion, 19, 34: Protrusion, 20, 35:
Hole, 21: Terminal fitting, 3a, 3b: Side block, 31a, 31b: Main body, 32a, 32b:
Arm, 33a, 33b: Locking part, 4: Cover, 7:
panel.

Claims (1)

[Scope of utility model registration request] A terminal board has a protrusion on one side and a hole on the other side into which the protrusion fits, and the terminal block has a concave part with the apex biased to one side. The arms are formed into a substantially U-shape, and a locking portion is provided at the free end of the arm, and the side surface of one body is provided with a hole or protrusion that fits into the protrusion or hole provided on the terminal plate. The main body has a pair of side blocks provided with protrusions or holes into which the holes or protrusions provided on the terminal board are fitted, and after successively fitting the protrusions and holes on the adjacent terminal boards, A terminal board for an electronic device, which is formed by fitting the holes or protrusions of the side block into the protrusions or holes of the terminal board at both ends and joining these together.