JPS6331122Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a control unit for electronic control equipment, such as a sequence controller, in which the input unit and output unit can be easily attached to and removed from the machine box. It is related to.

The machine box for conventional electronic control equipment usually incorporates a power supply unit, the required number of input units incorporating a specific electrical control circuit, and the same number of output units. When setting the control program to electronic control equipment,
A program setting device is connected to the connector of this machine box via a cable to make settings. In this way, in the conventional electronic control equipment mentioned above,
Because set screws were used to install and remove each unit, it took time to repair and inspect each unit, and long cables and other parts were required, making it especially difficult to remove input and output units more frequently. There were problems in that it was expensive and its handling was troublesome.

This invention was made in order to improve the above-mentioned drawbacks of the conventional electronic control equipment. In particular, the input unit and output unit, which require easy removal, can be pinched and pressed between the thumb and middle finger, respectively. To obtain a practically superior control unit for electronic control equipment that can be easily removed by pulling it out. An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of this invention, and FIG. 2 is a perspective view of the main parts with a portion of FIG. 1 removed. In these figures, since the control unit for electronic control equipment is of a specific size, the control unit machine box (hereinafter simply referred to as machine box) 1 has an open top surface.
After attaching the required number of input units 2, 2, output units 3, 3, connection unit 4 with a built-in CPU, and power supply unit 5 to the Program setting device (hereinafter simply referred to as setting device)
It is constructed by attaching 6.

In addition, the machine box 1 and each of the units 2, 3,
4, 5 and each surface plate 20, 30, 40 of the setting device 6,
Reference numerals 50 and 60 are made of synthetic resin, and a printed wiring board 31 incorporating required electrical equipment and a required electrical circuit, as partially shown in FIG. 2, is attached to each surface plate. . In addition, each surface plate 2
0 and 30 on the machine box 1, the printed wiring board 31 is engaged with an engagement groove (not shown) installed in the vertical direction on the internal side surface of the machine box 1, and then one of the printed wiring boards 31 is A card edge (not shown) formed in the machine box 1 is connected to a motherboard (not shown) provided in the machine box 1 to form a necessary control circuit.

The power supply unit 5 is fixed to the machine box 1 with screws 51 as shown in FIG. , 61 to the machine box 1, and push buttons 33, 62 for operating the locking mechanisms 32, 61 are provided on each surface 20, 30, 4.
They are provided so as to protrude from the side walls of 0 and 60, respectively.

As will be explained in detail later, the locking mechanism 32 is constantly springing outward due to its own elasticity.
When installed in a predetermined position, the locking mechanism engages with a predetermined locking groove 1b formed in a notch 1a of the machine case 1 by its elasticity, and to release the engagement, push button 3 is pressed.
3 inward from the outside to retract the locking mechanism 32 that is protruding outward, and then close the machine box 1.
Each unit 2, 3, 4 can be removed from the machine box 1 by removing it from the engaging portion 1b and pulling it upward.

The locking mechanism 61 and push button 62 of the control program setting device 6 are also similar to the locking mechanism 32 and push button 33.
This locking mechanism 61 is similar to the mechanism of
In this case, the engagement hole 5 formed in the power supply unit 5
2, and the setting device 6 is
On the surface plate 60, in addition to various electric appliances corresponding to the various keys 63 and number table window 64 on the surface, a proprietary connector edge 65 is protruded on the back side, so that the setting device 6 can be locked with its locking mechanism. When the connector edge 65 is inserted and locked into the engagement hole 52 of the power supply unit 5, the connector edge 65 is also inserted into the connector 41 of the connection unit 4 to connect the setting device 6 and the electric circuit in the machine box 1. Connecting.

Although not shown in the drawings, the machine box 1 is provided with a connector to enable electrical line connection with other control units of the same type.

As mentioned above, machine box 1, each unit 2, 3, 4,
5. Each surface plate 20, 30, 40, 5 of the setting device 6
0 and 60 are made of a synthetic resin material, it is difficult to form the respective surface plates integrally with the locking mechanisms 32 and 61 for locking them to the machine box 1. For this reason, each locking mechanism 32, 61 is attached to each surface plate 20, 30, 40, 50, 60.

3 and 4 show an example of the locking mechanisms 32, 61.

First, the locking mechanism 32 shown in FIG. At position 70, the mounting plate 36 is inserted and assembled into a support plate 71 having a dovetail groove 72 protruding from the inner surface of each surface plate 20, 30 at a position inside the end portion 35. In addition, in order to improve the elasticity of the push button 33, the mounting plate 36
A curved spring plate 37 cut out from the mounting plate 36 (an example is shown in which it is integrally formed with the mounting plate 36 from synthetic resin) is formed in the center of the spring plate 37 .
Further, a push button 33 is formed at the end of this spring plate 37. Spring plate 3 directly below the push button 33
An engagement protrusion 38 is formed on the engagement protrusion 3 .
When the units 2 and 3 are assembled into the machine case 1, the unit 8 is elastically engaged with an engaging portion 1b provided on the wall of the machine case 1, thereby engaging the units 2 and 3 with the machine case 1.

In order to prevent the mounting plate 36 assembled into the support plate 71 from falling from the support plate, the dovetail groove 72 of the support plate 71 is set to a specific length, and the mounting plate 36
There is an engagement protrusion 39, 3 that protrudes slightly laterally at the end of the
9, and when the mounting plate 36 is slid into the dovetail groove 72 and assembled, the engagement protrusions 39, 39 are pushed into the dovetail groove 7 by the elasticity of the mounting plate 36 so as to be slightly narrowed.
2, but the engaging protrusions 39, 39 are in the dovetail groove 72.
When it passes over the edge of the mounting plate 36, it expands to its original size due to the elasticity of the mounting plate 36, and thus the dovetail groove 7 of the engaging projections 39, 39
It is designed to be locked at the end of 2. Further, at this time, the push button 33 is fitted into the notch 70. Note that this locking mechanism 32 is similarly adopted as a locking mechanism for the connection unit 4.

The locking mechanism 61 shown in FIG. 4 is shown as a locking mechanism of the setting device 6, and this locking mechanism 61 has a notch 68 formed in the side wall 67 of the setting device 6, which is large enough to accommodate the push button 62. A protrusion 69 in which dovetail grooves 66, 66 are formed on the inner surface of the side walls on both the left and right sides of the notch 68,
69 is provided, and a push button mounting plate 75 is fitted and mounted between the protrusions 69, 69.

The left and right sides of the push button mounting plate 75 are formed into dovetail shapes 75a, and the center of the push button mounting plate 75 is a spring plate 76 cut out from the push button mounting plate 75 and integrally formed with the push button 62 from synthetic resin. An engaging protrusion 78 is formed to extend from the upper side of the mounting plate 75 and is provided on an extension of the spring plate 76 directly below the push button 62 . This engagement protrusion 78
When inserted and assembled into the engagement hole 52 of the power supply unit 5 shown in FIG. It can be held on the unit 5 as shown in FIG.

The push button mounting plate 75 has a dovetail groove 6 with protrusions 69, 69.
The pushbutton mounting plate 7 is fitted between the protrusions 69 and 66 to prevent it from falling from between the protrusions 69 and 69.
An engaging protrusion 77 is provided protrudingly from 5 . Engagement protrusion 7
7 is adapted to engage with a groove 67a formed on the inner surface of the side wall 67 of the setting device 6 when the push button mounting plate 75 is assembled between the protrusions 69, 69.

As described above, the control unit for electronic control equipment of this invention has an engaging protrusion formed on the outer surface of the leaf spring that always springs outward, and a push button for pressing from the outside toward the inside. A locking mechanism is formed in at least the casing of the input unit and the output unit, and furthermore, when the input unit and the output unit are inserted through the opening on the top surface of the machine case, the engaging protrusion of the spring plate snaps into place. Since a notch that engages with force is formed on the inner surface of the machine box, when installing the input unit or output unit, simply insert them into the opening of the machine box from the top to the bottom.
In addition, in the case of removal, it can be done by pinching and pressing the push buttons on both sides with the thumb and middle finger to release the engagement and pull them out, making it easy to handle with one touch and easy to use for other control units. This is a practical setting device that can be easily shared. Therefore, it has the advantage that the electrical circuits of each unit can be quickly repaired and inspected.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the control unit for electronic control equipment of this invention, Fig. 2 is a perspective view of the main parts with a part of Fig. 1 removed, Figs.
Each figure is a perspective view showing the locking mechanism of the embodiment shown in FIG. 1. In the figure, 1 is a control unit machine box, 1a is a notch unit, 1b is an engaging part, 2 is an input unit, 3
is an output unit, 4 is a connection unit, 5 is a power supply unit, 6 is a control program setting device, 2
0, 30, 40, 50, 60 are double-sided boards, 31 is a printed wiring board, 32, 61 are locking mechanisms, 33, 3
5 is the end, 36 is the mounting plate, 38, 39, 77, 7
8 is an engagement protrusion, 41 is a connector, 52 is an engagement hole,
52a is an engaging portion, 76 is a spring plate, 65 is a connector edge, 66 and 72 are dovetail grooves, 67 is a side wall, 67a
is a concave groove, 68 and 70 are notches, 71 is a support plate, and 7
5 is a push button mounting plate, and 75a is dovetail-shaped.

Claims (1)

[Scope of utility model registration request] A required number of input units incorporating a specific electric circuit, a required number of output units, a connection unit, and a power supply unit are installed in parallel in a machine box of a predetermined size with an open top so that they can be removed, In a control unit for an electronic control device in which a control program setting device is removably incorporated into a connection unit and a power supply unit, an engaging protrusion is formed on the outer surface of a leaf spring that always springs outward. A locking mechanism equipped with a push button for pressing inward from the machine box is formed at least on the housing of the input unit and the output unit, and the input unit and the output unit are connected to the opening on the top surface of the machine box. A control unit for electronic control equipment, characterized in that a notch is formed in the inner surface of the machine box, with which the engaging protrusion of the spring plate engages by its elastic force when inserted from the inside.