JPS63234593A - Electronic equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to electronic equipment, particularly electronic equipment incorporating a circuit board.

[Prior Art] Conventionally, methods using circuit boards such as printed circuit boards have been widely used in order to improve the packaging density of electronic circuit components and to make wiring work more efficient.

In recent years, circuit boards for personal computers, word processors, etc. have many mounted elements and tend to be very large. The large substrate in such a device is often mounted on the bottom of the device. This is because there are advantages such as ease of device design and the ability to place the circuit board in a stable position.

[Problems to be Solved by the Invention] However, in recent years, the mounting density of components on devices has been high, so that even more components may be mounted on a circuit board placed at the bottom of the device.

In a structure where components are mounted one after another on a circuit board and then covered with a cover, upper case, etc., many components installed on the circuit board must be removed.
There are cases where it is not possible to take out the board, which poses a problem in that workability during service and maintenance deteriorates.

On the other hand, if the circuit board is attached to the bottom cover of the device in consideration of workability during service and maintenance, there is a problem in that the ease of assembly deteriorates.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, in an electronic device incorporating a circuit board, a removable lid member is provided on a predetermined surface of the device, and the circuit board When mounting the circuit board, the circuit board is mounted on the inner surface of the lid member attached to the predetermined surface from the direction opposite to the predetermined surface of the device, and when the circuit board is taken out, the lid member together with the circuit board is mounted from the predetermined surface side. We adopted a configuration in which it can be removed.

[Function] According to the above configuration, the circuit board can be mounted from the direction facing the predetermined surface, and then other components can be sequentially mounted on the board from the same direction, and the lid member can be removed. This allows the circuit board to be taken out without removing other parts.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

Figure 1 shows a CRT as an example of an electronic device adopting the present invention.
The internal structure of a data processing device, such as a word processor or a personal computer, is shown from the side.

In FIG. 1, the lower part on the left side of the figure is an operation section with a keyboard 5 provided on the upper surface to be operated by the user, and the higher part on the right side of the figure is a display section with a built-in CRT display 4.

The case of the device is divided into two parts, and is composed of a lower case 1 and an upper case 6 made of a predetermined material such as plastic or metal.

A lid member 2 is screwed to the bottom of the apparatus, that is, below the CRT display 4 on the bottom of the lower case 1 with screws 22. A retaining means such as a claw (not shown) is provided on the side opposite to the side fixed by the screws 22 and engages with the lower case 1 .

On the inner surface of the lid member 2, a circuit board 3 having an area slightly smaller than the opening formed in the lower case 1 when the lid member 2 is removed is screwed to a post 21 provided on the inner surface of the lid member 2. It is fixed by methods such as The main parts of the electronic circuit of the device, such as a main control section and a power supply section, are mounted on the circuit board 3.

Further, a CRT display 4 configured on a subframe 41 is incorporated in the upper part of the circuit board 3. The subframe 41 on which the CRT display 4 is mounted is fixed to a boss 42 erected on the inner surface of the lower case 1 by screwing or the like.

The display surface of the CRT display 4 is located in the opening 4 of the upper case 6.
2, and is slightly inclined toward the user.

The keyboard 5 is fixed to the operating section of the upper case 6 by screws or the like, and a portion of the operating keys are exposed on the upper surface of the upper case 6.

To assemble the above structure, first, the lid member 2 is fixed to the bottom surface of the lower case l with screws 22.

Next, the lower case 1 is placed on a workbench or the like in the normal installation state shown in FIG. 1, and the circuit board 3 is fixed to the inner surface of the M member 2.

Next, the CRT display 4 assembled on the subframe 41 is assembled onto the circuit board 3. The circuit board 3 and the CRT display 4 are electrically connected by a method such as joining connectors of each part.

Subsequently, the upper case 6 with the keyboard 5 assembled thereon is placed over the above structure and fixed to the lower case l by screws or the like. The circuit board 3 and the keyboard 5 are also connected by cables, connectors, etc.

The above structure is completed in the above manner.

On the other hand, if you want to take out the circuit board 3 for service or maintenance, put the rear end of the device down as shown in Figure 2, remove the screws 22 fixing the cover member 2, and then lower the When the lid member 2 is removed by rotating the lid member 2 in the direction of the arrow around the engagement portion between the case l and the lid member 2, the circuit board 3 is installed on the inner surface of the lid member 2, so other Only the circuit board 3 can be easily taken out without removing any members.

The length of the cable that connects the circuit board 3 and other circuit components should be made long enough to allow for easy disconnection of connectors and other connections when removing the cover member 2 together with the circuit board 3. Of course.

In the above configuration, radiation of electromagnetic waves from the circuit board 3,
Alternatively, in order to prevent the circuit board 3 from being disturbed by static electricity or magnetic noise, the lid member 2 may be made of a conductive material, a magnetic material, or the like, thereby ensuring stable operation of the circuits of the circuit board 3.

The above configuration is not limited to data processing devices, but can be applied to various electronic devices.

Furthermore, although the circuit board was attached to the inner surface of the lid member on the bottom surface of the device, it is also possible to provide the lid member on another surface of the device. Even in that case, the above-mentioned board mounting method and extraction method are the same.

[Effects of the Invention] As is clear from the following, according to the present invention, in an electronic device incorporating a circuit board, a removable lid member is provided on a predetermined surface of the device, and the circuit board is mounted. A circuit board is attached to the inner surface of the lid member attached to the predetermined surface from a direction facing the predetermined surface of the device, and when the circuit board is taken out, the lid member is removed together with the circuit board from the predetermined surface side. During assembly, the circuit board can be mounted from the direction facing the predetermined surface, and then other components can be sequentially mounted on the board from the same direction. By removing the member, the circuit board can be taken out without removing other parts, which has the excellent effect of achieving both ease of assembly, service, and workability during maintenance.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the internal structure of a data processing device as an example of an electronic device employing the present invention, and FIG. 2 is a perspective view illustrating service or maintenance work in the device of FIG. 1. ■... Lower case 2... Lid member 3... Circuit board 4... CRT display 5... Keyboard 6... Upper case 22... Screws

Claims (1)

[Claims] In an electronic device incorporating a circuit board, a removable lid member is provided on a predetermined surface of the device, and when the circuit board is mounted, a circuit is attached to the inner surface of the lid member that is attached to the predetermined surface from the direction opposite to the predetermined surface of the device. An electronic device characterized in that when a board is attached and the circuit board is taken out, the lid member is removed together with the circuit board from the predetermined surface side.