JPS644131Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention comprises a CRT and various mounting units mounted adjacent to at least one side of the CRT.
This article relates to electronic devices with a built-in CRT, and in particular to the mounting structure of desktop electronic devices with a built-in CRT.

[Technical background of the invention]

This type of CRT built-in electronic equipment generally has the front panel as the operating section, so as shown in Fig. unit, such as a floppy disk device (hereinafter referred to as
A CRT chassis (also called a CRT frame) that houses the CRT 10 such that the operation part of the FDD (also called an FDD) 11 is close to the front mask 12.
13, FDD 11, etc. are arranged on a housing base 14.

When mounting the CRT chassis 13 in the assembly of such electronic equipment, it is required that the display tube surface of the CRT 10 and the front mask 12 be attached in close contact with each other so that there is no gap. Therefore, in conventional electronic equipment, support arms 15a to 15d are provided on the back side (inside) of the front mask 12 to fix the front mask 12 and the CRT chassis 13, as shown in FIG. . And CRT chassis 13 and front mask 12
are pressed against each other, and the CRT chassis 13 and front mask 12 are screwed and fixed with screws (not shown) through screw holes 16a to 16d formed in the support arms 15a to 5d.

[Problems with background technology]

However, in the case of such an electronic device structure, the support arm 15 on the side where no mounting unit is placed next to it
There is no problem with installation and removal using the support arms 15c and 15b on which the FDD 11 is mounted.
The following problems occurred during installation and removal using the 15d. In other words, CRT chassis 1 must be removed for maintenance, etc.
3, it is necessary to remove the screws that fixed the CRT chassis 13 and the front mask 12 via the support arms 15c and 15d.
1 had to be removed, resulting in poor maintainability. Furthermore, in order to remove the front mask 12, it was impossible to remove most of the mounting units. Furthermore, the assembly order of the mounting units is fixed, resulting in a problem of lack of freedom in the assembly process.

[Purpose of invention]

This invention was devised in view of the above circumstances, and its purpose is to provide a CRT that can be easily installed and removed from various units, and has excellent assembly workability and maintainability.
The purpose is to provide built-in electronic equipment.

[Summary of the idea]

In the present invention, at least one side of the back surface of the front mask is attached to the front mask and the housing base or
A support arm is provided for screwing and fixing the base plate that serves as the base of the CRT chassis, so that the front mask can be installed and removed independently regardless of whether a mounting unit is mounted or not. In addition, in the present invention, in order to prevent a decrease in the mounting strength of the front mask, the base plate is provided with a partition section extending upward on at least one side, and holes for screwing are provided in the upper front part of the partition section. The front mask and the base plate are fixed to each other by screws via the support arms.

Furthermore, in the present invention, a hook hole is provided in the front part of the base plate, and the hook hole is provided in the front part of the bottom of the CRT chassis when the CRT chassis is moved on the base plate surface toward the front mask side. A key-shaped protrusion that engages with the base plate is provided, and by moving the CRT chassis with the front mask attached, the display surface of the CRT is tightly fixed to the front mask. In order to ensure this tight fixation, a threaded portion is provided at the rear of the base plate, and a mounting portion with a long hole is provided at the portion of the bottom of the CRT chassis that corresponds to the threaded portion. The CRT chassis is fixed to the base plate with screws.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. Figure 2 is an exploded perspective view of an electronic device with a built-in CRT; similar to Figure 1, the display tube surface of the CRT20,
A CRT chassis 23 housing the CRT 20 and the FDD 21 are assembled into a housing base 24 so that the operating portion of the FDD 21 is close to the front mask 22. Furthermore, the housing base 24 further includes a power supply 25, a printed wiring board 26, and a motherboard 2.
All necessary units such as 7 are included. Units such as the CRT chassis 23 and FDD 21, which require position adjustment and close contact with the front mask 22, are slid and fixed in the direction of the arrow X shown in the figure, as will be described later. The CRT chassis 23 is attached and fixed to a substantially L-shaped base plate 30 attached to the housing base 24. The side of this base plate 30 is CRT
It serves as a partition 30a between the chassis 23 and the FDD 21 (as it is not intended as a partition, it may be narrower than the bottom of the base plate 30),
A support arm (first support arm) 32 in which a screw hole (first screw hole) 31 is bored in a surface substantially parallel to the front mask 22 is formed in an upper portion of the partition portion 30a on the front mask 22 side. has been done.

The front mask 22 and the base plate 30 are screwed and fixed via the support arm 32 by screws 33 to a portion on the back side (inside) of the front mask 22 that corresponds to the screw hole 31 of the support arm 32. A threaded portion (not shown) (second threaded portion) is provided for this purpose. Also front mask 2
A support arm 35 with a screw hole 34 (same as the support arm 15a in FIG. 1) is provided in the upper part of the left side in the figure on the back side of 2, and a screw hole (similar to the support arm 15a in FIG. 1) is provided in the lower part. A support arm (second support arm) 37 is provided with a second screw hole (second screw hole) 36 formed therein. On the other hand, on the left side of the CRT chassis 23,
A threaded portion 39 is provided at a portion of the support arm 35 corresponding to the screw hole 34 for fixing the front mask 22 and the CRT chassis 23 through the support arm 35 with screws 38. There is. Further, the support arm 37 of the housing base 24
There is a screw 4 in the part corresponding to the screw hole 36.
0, a threaded portion 41 is provided for fixing the front mask 22 and the housing base 24 with screws via the support arm 37. Note that this threaded portion 41 may be provided on the base plate 30 so that the front mask 22 and the base plate 30 are screwed and fixed via the support arm 37. By the way, in this embodiment, the support arm 3
A support arm (not shown) of the same type as 7 is provided on the right side of the back side of the front mask 22 in the drawing, and a threaded portion (not shown) corresponding to the threaded portion 41 is provided on the right side of the housing base 24 in the drawing. The front mask 22 and the housing base 24 are more firmly screwed together by the screws 42 (not necessarily required).

In such a configuration, the CRT chassis 23
At the final stage of assembly, in which the FDD 21 and the like are assembled into the housing base 24 (Figure 2 shows this state), the front mask 22 is attached to the screws 33 and 4.
It is fixed to the housing base 24 and the base plate 30 by screws using screws 0 and 42. Then, slide the CRT chassis 23 and FDD 21 in the X direction shown in the figure and press them against the front mask 22.
While fixing the CRT chassis 23 and FDD 21 to the base plate 30 or housing base 24 with screws etc., the front mask 22 is fixed with screws 38.
Assembly is completed by fixing it to the CRT chassis 23.

FIG. 3 shows a cross section in the Y-Y' direction of FIG. A threaded portion 51 (first threaded portion) is formed on the opposite side).
In addition, a hooking hole 50 is provided at a portion of the bottom of the CRT chassis 23 that corresponds to the hooking hole 50.
A key-shaped protrusion 52 that engages with the base plate 30 via the screws 53 is pre-attached. Further, at the bottom of the CRT chassis 23, a portion corresponding to the threaded portion 51 is provided with the CRT chassis 23.
A mounting plate 55 with a long hole 54 whose position can be adjusted in the direction of the arrow X shown in the figure and in the opposite direction
6 is installed in advance.

A method of mounting the CRT chassis 23 in an electronic device having such a configuration will be described. first
A key-shaped protrusion 52 attached to the bottom of the CRT chassis 23 connects to the hooking hole 50 of the base plate 30.
The CRT chassis 23 is placed on the base plate 30 so that the long holes 54 of the mounting plate 55 are aligned with the threaded portions 51 of the base plate 30. In this state, insert the screw 57 into the long hole 54, and use this screw 57 to temporarily fix the CRT chassis 23 to the base plate 30 (third
The figure shows this situation). Next, as described above, the front mask 22 is fixed to the housing base 24 and the base plate 30 with screws. Then, the CRT chassis 23 is mounted and fixed in the correct position with respect to the base plate 30 by sliding the CRT chassis 23 on the surface of the base plate 30 in the X direction shown in the figure and pressing it against the front mask 22, and then tightening and fixing it with the screws 57. , the assembly of the CRT chassis 23 can be completed extremely easily.

Regarding the implementation of FDD21, please refer to the above-mentioned
It may be of the same type as the CRT chassis 23, or it may be of a sliding type using guide rails. Also,
The protrusion 52 and the mounting plate 55 are attached to the CRT chassis 2.
It may be formed integrally with 3. Further, the front mask 22 and the CRT chassis 23 do not necessarily need to be fixed with screws. Therefore, in this case, even for a structure in which other mounting units are mounted on both sides of the CRT chassis,
It is possible to obtain the same effects as those of the above-mentioned embodiment as described below, such as being able to attach the front mask 22 at the final stage of assembly.

[Effect of idea]

As detailed above, according to the present invention, the following effects can be achieved.

The front mask can be attached at the final stage of assembly. Therefore, damage to the appearance of the front mask during the assembly stage can be minimized.

This solves the problem of not being able to assemble the mounting unit including the CRT chassis unless the assembly order is followed. For this reason, for example, it is possible to create an assembly line that responds to changes in unit arrival status, and eliminates the inconvenience of the conventional system where the assembly line would come to a complete stop because a certain unit did not arrive, even if other units were available. can be resolved.

Maintainability is improved because the target unit can be removed without removing unintended units.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a conventional electronic device with a built-in CRT, Figure 2 is an exploded perspective view of an embodiment of the electronic device with a built-in CRT of the present invention, and Figure 3 is an exploded perspective view of a conventional electronic device with a built-in CRT.
It is a sectional view in the −Y′ direction. 20...CRT, 22...Front mask, 2
3...CRT chassis, 24...Housing base, 3
0... Base plate, 30a... Partition part, 3
2...First support arm, 37...Second support arm, 50...
...Hooking hole, 51... Threaded portion, 52... Key-shaped protrusion, 54... Elongated hole, 55... Mounting plate (mounting part).

Claims (1)

[Scope of utility model registration request] A CRT built-in electronic device comprising a CRT and various other mounting units, which has a hooking hole in the front part, a first screw part in the rear part, and a partition part extending upward on at least one side. and a base plate having a first support arm having a first screw hole in the upper front part of the partition part, and a second screw part facing the first screw hole in the upper back side part. With,
A second support arm having a second screw hole on at least one side portion of the back side is provided, and the second support arm is screwed and fixed to the housing base or the base plate through the second screw hole of the second support arm. and a front mask screwed to the partition portion through a first screw hole of the first support arm, and a CRT chassis housing the CRT,
The bottom of the chassis is provided with a key-shaped protrusion facing the hooking hole of the base plate, and a mounting part having an elongated hole facing the first threaded part of the base plate, and the key-shaped protrusion is connected to the hooking hole of the base plate. An electronic device with a built-in CRT, comprising: a CRT chassis that is screwed and fixed to the base plate through a long hole in the mounting portion while being engaged with the base plate through a hanging hole.