JPH0573114A - I/o module for pc - Google Patents

Abstract

PURPOSE:To easily connect wiring cables at an I/O module for a programmable controller (PC) fitted to the mother board of an I/O unit for PC. CONSTITUTION:A lot of I/O modules are connected to the module fitting plane 13a of a mother board 13 from the left side of drawing. Terminal bases 15 and 16 are stepwise provided on the opposite side of the module fitting plane 13a of an I/O module 11, and the terminal planes of these terminal bases 15 and 16 are made perpendicular to the module fitting plane 13a. Therefore, in the case of connecting a wiring cable 17 to the terminal 16a of the terminal base 16, it is inserted from the opposite side of the module fitting plane 13a, and a screw 18 is fixed by a driver 19.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a PC (programmable
The present invention relates to a PC I / O module attached to a motherboard of a controller I / O unit, and more particularly to a PC I / O module provided with a terminal block.

[0002]

2. Description of the Related Art A PC I / O unit is constructed by mounting a plurality of I / O modules on a mother board. To the PC I / O unit, cables gathering from each mechanical section of the machine are connected via an I / O module.

FIG. 8 is a diagram showing the configuration of a conventional I / O module. The case 82 of the I / O module 81 accommodates a printed wiring board on which circuit components are mounted. The I / O module 81 is mounted on the module mounting surface 83a of the motherboard 83. Case 8
A terminal block mounting portion 84 is formed on the opposite side of the second module mounting surface 83a. The terminal block mounting portion 84 is provided with two terminal blocks 85 and 86 in a stepwise manner. These terminal blocks 85 and 86 are provided such that their terminal surfaces are parallel to the module mounting surface 83a. Therefore, when the wiring cable 87 is attached to the terminal block 85 or 86, the wiring cable 87 is inserted from the direction parallel to the module mounting surface 83a, and the screw 88 is stopped by the screwdriver 89 from the direction perpendicular thereto.

FIG. 9 is a view showing a state in which all the necessary wiring cables 87 are attached to the I / O module 81. I
Other I / O modules 81A and 81B are attached to the left and right of the / O module 81 in close proximity. The wiring cable 87 connected to the I / O module 81 is stored in the storage unit 8
It is stored in 9.

[0005]

However, since the I / O modules 81A and 81B are close to each other in the I / O module 81, the space of the storage section 89 is limited. Therefore, when a crimp terminal with an insulation coating or a tube for writing a wire mark is attached to the wiring cable 87, or when a thick wire is used for the cable, or when the number of wires is large, the adjacent I / O module 81B becomes an obstacle. There is a problem that connection of the cable 87 becomes difficult.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an I / O module of a PC which can easily connect a wiring cable.

[0007]

In order to solve the above problems, the present invention has a plurality of terminals to which a wiring cable is connected in an I / O module of a PC mounted on a motherboard of a PC I / O unit. Place the terminal block on the side opposite to the module mounting surface of the motherboard,
An I / O module of a PC is provided, wherein the terminal surface is provided so as to be perpendicular to the module mounting surface.

[0008]

Since the terminal surface of the terminal block is perpendicular to the module mounting surface of the motherboard, the wiring cable is connected to the terminal block from the side opposite to the module mounting surface of the motherboard and in the vertical direction. Therefore, the wiring cable is not obstructed by another I / O module adjacent thereto.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a configuration of an I / O module of a PC (programmable controller) which is an embodiment of the present invention. The case 12 of the I / O module 11 accommodates a printed wiring board on which circuit components are mounted. The I / O module 11 is mounted on the module mounting surface 13 a of the motherboard 13. Case 12
A terminal block mounting portion 14 is formed on the opposite side of the module mounting surface 13a. The terminal block mounting portion 14 is provided with two terminal blocks 15 and 16 in a stepwise manner. These terminal blocks 15 and 16 are provided so that each terminal surface is perpendicular to the module mounting surface 13a.

FIG. 1 is a diagram showing a method of attaching a wiring cable to the I / O module 11. Motherboard 13
A large number of I / O modules are sequentially connected to the module mounting surface 13a of FIG. I / O here
The I / O module 11 is attached next to the module 11A. When connecting the wiring cable 17 to the terminal 16a of the terminal block 16 in the I / O module 11, for example, the wiring cable 17 is inserted from the direction opposite to the module mounting surface 13a, and the screw 18 is fixed by the driver 19. Similarly, connect the wiring cable to each of the other terminals. After connecting the necessary wiring cables, attach the I / O module 11B to the right of the I / O module 11 and
A wiring cable is connected in the same manner as the / O module 11.

FIG. 3 is a side view showing a state where all the wiring cables 17 are connected to the I / O module 11. As can be seen from the figure, since the wiring cable 17 is connected from the opposite side of the module mounting surface 13a, the space of the wiring cable is not limited by the other I / O modules 11A and 11B. Therefore, even if a crimp terminal with an insulation coating or a tube for writing a wire mark is attached to the wiring cable 17, a thick wire is used for the cable, or even if the number of wires is large, connection can be easily performed. ..

Next, another embodiment of the present invention will be described. Figure 4
FIG. 6 is a diagram showing the configuration of another embodiment of the present invention. One end of the case 22 on the main body side of the I / O module 21 is attached to a slot (not shown) of the module attachment surface 23a of the motherboard 23. A convex portion 24 is formed on the other end of the case 22. On the surface 24a of the convex portion 24, a rail 25 is formed that widens from the surface 24a side toward the outside. Further, a connection surface 26 to which the terminal block unit 31 is connected is formed below the convex portion 24. A large number of pins 27 are provided on the connection surface 26, and are fitted into holes 60, which will be described later, of the terminal block unit 31. By fitting the pin 27 and the hole 60, the terminal block unit 31 can be integrated with the case 22.

A terminal block mounting portion 32 is formed on the terminal block unit 31. The terminal block attachment portion 32 is provided with terminal blocks 33 and 34 on the stairs. When the terminal block unit 31 is combined with the case 22, the terminal blocks 33 and 34 are provided such that their terminal surfaces are perpendicular to the module mounting surface 13a, as in FIG. When the terminal block unit 31 is combined with the case 22, the terminals of the terminal blocks 33 and 34 are electrically connected to the circuits in the I / O module 21 via the pins 27. In addition, a groove 36 that fits into the rail 25 is formed on the upper surface 35 of the terminal block unit 31.

FIG. 5 is a view showing a state in which the terminal block unit 31 is combined with the case 22. In this state, the terminal surfaces of the terminal blocks 33 and 34 are the module mounting surface 23a.
And become vertical. Therefore, to connect the wiring cable 37, the wiring cable 37 is inserted from the opposite side of the module mounting surface 23a, and the screw 38 is stopped by the screwdriver 39. By doing so, the connection can be easily made without limiting the space of the wiring cable 37 as in the first embodiment. However, in such a method, I
It is very difficult to connect the wiring cable 37 with another I / O module already attached to the right side of the / O module 21. Therefore, in such a case, the terminal block unit 31 is removed from the case 22 and the wiring cable is connected.

FIG. 6 is a diagram for explaining a method of removing the terminal block unit 31 from the case 22 and connecting a wiring cable. Terminal block unit 31 removed from case 22
Rotates 90 degrees to the right and slides the groove 36 into the rail 25 of the case 22 so that the groove 36 is fitted. As a result, the terminal block unit 31 can be connected to other I / O modules 21A, 21
Since it goes out from the end surface of B, connect the wiring cable 37 to I.
Insert from the left side of the / O module 21 and screw it in.
After the connection of all the wiring cables is completed, the groove 36 is removed from the rail 24, the hole 60 of the terminal block unit 31 and the pin 27 of the case 22 are connected, and the terminal block unit 3 is again connected.
1 is combined with the case 22. In this way, in this embodiment, the wiring cable can be easily connected even when another I / O module is attached to the motherboard.

In this embodiment, as a method of connecting the terminal block unit 31 to the convex portion 24, the rail 25 and the groove 36 are used.
Although the two are fitted with each other, the present invention is not limited to this. That is, as shown in FIG. 7, a hook 71 having a predetermined width is provided on the surface 35 of the terminal block unit 31, and a groove 72 for fitting with the hook 71 is formed on the convex portion 24 side of the I / O module 21. Good. In addition to this, the terminal block unit 31 may be screwed to the convex portion 24, or a pin may be provided on either one of the terminal block unit 31 and the convex portion 24 and a hole for fitting the pin may be formed on the other. It may be formed. Furthermore, planar fasteners may be provided on both the terminal block unit 31 and the convex portion 24.

Further, the means for connecting the terminal block unit 31 and the convex portion 24 to each other is not adopted, and the terminal block unit 3 is
1 may be placed on a table or the like to connect the wiring cables. Furthermore, the terminal block unit 31 may be fixed to the table.

In the above two embodiments, the I / O module 11 is used as an I / O unit for a PC.
Although described as an O module, the present invention can also be applied to I / O modules of other control devices and the like.

[0019]

As described above, according to the present invention, the terminal surface of the terminal block is perpendicular to the module mounting surface of the motherboard, so that the wiring cable is opposite to the module mounting surface of the motherboard and is vertical. It can be inserted into the terminal block from any direction. Therefore, since the wiring cable is not disturbed by other I / O modules in the vicinity, the connection can be easily performed.

[Brief description of drawings]

FIG. 1 is a diagram showing a method of attaching a wiring cable to an I / O module.

FIG. 2 is a diagram showing a configuration of an I / O module of a PC that is an embodiment of the present invention.

FIG. 3 is a side view showing a state where all the wiring cables are connected to the I / O module.

FIG. 4 is a diagram showing the configuration of another embodiment of the present invention.

FIG. 5 is a diagram showing a state in which the terminal block unit is combined with a case.

FIG. 6 is a diagram illustrating a method of removing a terminal block unit from a case and connecting a wiring cable.

FIG. 7 is a diagram showing a method for connecting the convex portion and the terminal block unit with a hook.

FIG. 8 is a diagram showing a configuration of a conventional I / O module.

FIG. 9 is a diagram showing a state in which all the necessary wiring cables are attached to a conventional I / O module.

[Explanation of symbols]

 11 I / O module 12 Case 13 Motherboard 13a Module mounting surface 14 Terminal block mounting surface 15, 16 Terminal block 17 Wiring cable 18 Screw

Claims (6)

[Claims] 1. A PC (programmable controller)
PC attached to the motherboard of the I / O unit for use
In the I / O module, a terminal block having a plurality of terminals to which a wiring cable is connected is provided on the opposite side of the module mounting surface of the motherboard so that the terminal surface is perpendicular to the module mounting surface. PC I / O module characterized by 2. The PC I / O module according to claim 1, wherein the terminal block is provided in a terminal block unit that is detachable from the I / O module body. 3. The terminal block unit is detached from the I / O module main body side while leaving a part of a side surface opposite to the module mounting surface, while the terminal surface is parallel to the module mounting surface. 3. The I / O module for a PC according to claim 2, wherein the I / O module is configured to be coupled to the side surface by the. 4. The rail is formed on the side surface so as to widen from the side surface to the outside,
4. The PC I / O module according to claim 3, wherein the terminal block unit is provided with a groove that slides into the rail. 5. The terminal block unit is provided with a hook bent downward, and a groove for fitting with a tip of the hook is provided on an upper surface of the I / O module main body side. The PC I / O module according to claim 3. 6. The terminal block unit is formed with a screw hole for inserting a screw toward the side surface, and a female screw for fixing the screw is formed on the side surface. Item 3. The PC I / O module according to Item 3.