JPH0121331Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a CRT filter frame that is attached to an operation board with a built-in CRT.

An operation board used in a conventional numerical control device or the like has been constructed as shown in FIG. In this figure, 1 is the operation panel, 2 is the CRT filter frame, and 3
4 is a CRT filter attached to the CRT filter frame 2; 4 is a tongue-shaped menu key made by cutting out a part of the CRT filter frame 2 in a U-shape;
A key switch unit 5 is installed from the back side of the CRT filter frame 2, and is activated by pressing the menu key 4 from the front. 6 is a data input switch, and 7 is a CRT display menu.

2 is a side cross-sectional view of FIG. 1, FIG. 3 is a detailed front view of the menu key, FIG. 4 is an enlarged detailed cross-sectional view of the menu key, and numeral 8 indicates the tube surface of the CRT.

In the above, by operating the menu key 4 built into the CRT filter frame 2,
The input data items of the CRT display menu 7 displayed at the position corresponding to the menu key 4 are displayed on the CRT screen 8, and the operator
Follow the instructions to input data and create a program.

In this case, the menu key 4 has a U-shaped cutout in a part of the CRT filter frame 2 to operate the switch, and is structured to operate the key switch unit 5 built into the back side. 5, attach a printed board with a flat key 5B, key top 5C, etc. installed in advance to the mounting plate 5A, and then attach the mounting plate 5A.
It is attached to a CRT filter frame 2, and the CRT filter frame 2 and key switch unit 5 are configured separately.

In conventional CRT filter frames with a built-in menu key, the switch operation part is made by cutting out a part of the CRT filter frame 2 in a U-shape, so there is a risk that the cutout will become clogged with dust and the switch will not operate. It was hot. Furthermore, in order to prevent the infiltration of oil, etc., it is necessary to take oil-proof measures such as rubber gaskets.
In order to assemble the CRT filter frame 2 and the key switch unit 5, it is necessary to secure a space for fixing screws, which not only makes it impossible to make it compact;
In terms of price, it also has disadvantages, such as the cost increase since two units, the CRT filter frame 2 and the key switch unit 5, are required.

This idea was made to eliminate the drawbacks of conventional products as mentioned above. By integrally molding the CRT filter frame and key switch unit, it is compact, dust-proof, oil-proof, and inexpensive.
The purpose is to provide a CRT filter frame. An embodiment of this invention will be described below with reference to the drawings.

Figure 5 is a front view showing an embodiment of this invention.
FIG. 6 is a side sectional view, and FIG. 7 is an enlarged detailed sectional view of the menu key. In these figures, 2A
1 is a CRT filter frame according to this invention, 9 is a printing sheet, and 10 is a printed board.

In the above, within the CRT filter frame 2A,
The location where the menu key 4 is mounted, that is, the mounting space for the key switch unit 5, and a rib located corresponding to this space are made by integral molding, and the key switch unit 5 mounted on the printed board 10 is attached to the rib from the back side. It is attached by screwing it to. On the surface, the printed sheet 9 is pasted with double-sided tape or the like so as to cover the front of the mounting space. When using,
Press menu key 4 while looking at the display on print sheet 9.
It can be used in exactly the same way as the conventional example.

As explained above, according to this idea,
Since the CRT filter frame and switch operation part are integrally molded, the entire structure can be made compact and inexpensive, and the product can be manufactured with excellent precision. Furthermore, since the printed sheet can be pasted from the surface,
It has the advantage of being able to design the switch freely and being dust-proof and oil-proof.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional operation panel, Fig. 2 is a side sectional view, Fig. 3 is a detailed front enlarged view of the menu switch, Fig. 4 is a detailed enlarged sectional view of the conventional menu switch, FIG. 5 is a front view of an operation panel showing an embodiment of this invention, FIG. 6 is a side sectional view of the same, and FIG. 7 is an enlarged detailed sectional view of the menu switch of this invention. In the figure, 1 is the operation panel, 2 and 2A are the CRT filter frames, 3 is the CRT filter, 4 is the menu key,
5 is the key switch unit, 5A is the mounting plate, 5B
is the flat key switch body, 5C is the key top, 6 is the data input switch, 7 is the CRT display menu, 8 is the CRT screen, 9 is the printing sheet, 1
0 is a printed board. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In the case where a plurality of menu keys are installed in the CRT filter frame of a numerical control device mounted on an operation board with a built-in CRT, there is a space in the CRT filter frame for mounting the menu key switch unit, and a position corresponding to this space. A rib is provided by integral molding, a printed board on which the key switch unit is mounted in advance is attached to the back side of the CRT filter frame using the rib, and printing is printed on the surface of the filter frame so as to close the front side of the empty space. A CRT filter frame for numerical control equipment, characterized by having a sheet pasted on it.