JPH07254786A - Case of electronic equipment - Google Patents

Abstract

PURPOSE:To prevent the generation of line biting of holding a signal conductor cable between fellow bosses by a method wherein the case of an electronic equipment is formed with good appearance, without taking a space, in a high strength and moreover, by a low-cost structure. CONSTITUTION:In a case of an electronic equipment manufactured into a structure, wherein an upper case (a second case half body) 5 with a boss 5a, which is formed with a screw hole 5h and is projected on the inner side surface of the case 5, is superposed on a lower case (a first case half body) 11 with a boss la, which is formed with a screw hole 1h and is projected on the inner side surface of the case 1, and the cases 1 and 5 are fixed to each other by clamping the bosses 1a and 5a by a screw 8 in such a way as to butt the fellow bosses 1a and 5a to each other, a rib lb is formed integrally with the boss 1a of the case 1 on the peripheral edge part of the point surface of the boss la and the generation of line biting is stopped by this rib 1b. As the rib 1b is molded integrally with the boss 1a, a whisker is not generated in the part of the rib 1b at the time of the molding and the appearance of the case is improved. Moreover, the number of parts items and an assembly manhour are not increased and the cost of the case is not increased. Moreover, the rib is made low and the strength of thc case can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device case,
Particularly, the first and second case halves each having a boss having a screw hole formed on each inner surface thereof are overlapped, and the bosses of the first and second case halves are butted to each other and fastened with a screw. Thus, the present invention relates to an electronic device case in which the first and second case halves are fixed to each other.

[0002]

2. Description of the Related Art As an example of this kind of electronic equipment case,
A conventional structure of a display case used for a personal computer, a word processor or the like will be described with reference to FIGS.

As shown in FIG. 7, the case of the display 10 is composed of an upper case 5 and a lower case 4, which are half cases.
Are fixed to each other. The lower case 4 and the upper case 5 are temporarily fixed by fitting the claws 4c integrally formed on the lower case 4 (see FIG. 9) and the not-shown claws of the upper case 5,
It is permanently fixed by the screw 8.

For this screwing, as shown in FIG. 8, a screw hole 4 for inserting the screw 8 is formed in the inner surface of the lower case 4.
A cylindrical screwing boss 4a having h is formed. The screwing boss 4a is a recess as seen from the outside, and a separate component for concealing the screw 8 is fitted therein. In addition, the inner surface of the upper case 5 has a boss 5a having a threaded hole 5h
Are formed. Then, the lower case 4 and the upper case 5 are fixed to each other by tightening the bosses 4a and 5a with the butting screws 8.

On the other hand, FIG. 9 shows the back side of the lower case 4. As shown in FIG. 9, an LCD unit (liquid crystal display unit) 7 is fixed to the lower case 4 with screws. The LCD unit 7 has a display 1 shown in FIG.
One end of a signal line cable 6 for exchanging an electric signal with the electronic device body 11 to which 0 is attached is connected. The other end of the cable 6 is led out from the display 10 through a hole formed by a notch 4d formed in the lower case 4 and a notch (not shown) in the upper case.

The cable 6 is connected to an electronic circuit board provided inside the electronic device main body 11 through a hole provided in the electronic device main body 11. Further, the display 10 is rotatably attached to the electronic device body 11 by a hinge mechanism or the like.

By the way, as shown in FIG. 9, the lower case 4
A rib 4b is provided near one of the screw fastening bosses 4a. As shown in FIG. 8, when fixing the upper case 5 and the lower case 4 with the screw 8, the cable 6 moves and is sandwiched between the screw fixing boss 4a of the lower case 4 and the boss 5a of the upper case 5. This is to prevent this (hereinafter, referred to as line shading). If this line fray occurs, not only will a step be formed on the case as shown in FIG. 8, but it will also cause trouble such as disconnection of the cable 6.

Incidentally, instead of providing the ribs 4b, a method of fixing the cable 6 to the lower case 4 by using a separate part to prevent line breakage is often taken.

[0009]

However, the above-mentioned conventional example has the following drawbacks.

(1) When the lower case 4 is formed, a dent called a sink mark is formed in the rib 4b, and the shape of the dent is lower.
Appear on the outer surface of the and the appearance is poor.

(2) Although the space inside the display case is originally small, the provision of the rib 4b allows more space to be provided in the vicinity of the screw-fastening boss 4a, which facilitates the assembling of the components of the display. Adversely affect.

(3) The rib 4b is high and weak in strength, and is easily damaged.

(4) If the cable 6 is fixed by a separate component instead of providing the rib 4b, the number of components and the number of assembling steps increase, resulting in an increase in cost.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks in an electronic equipment case of this type, to ensure a good appearance, to save a space, to have a high strength, and to secure a wire line with an inexpensive structure. To prevent it.

[0015]

In order to solve the above-mentioned problems, according to the present invention, first and second case halves each having a boss having a screw hole formed on each inner surface thereof are superposed on each other. An electronic device case in which the first and second case halves are fixed to each other by abutting the bosses of the first and second case halves against each other and tightening with screws. A rib is integrally formed on the peripheral portion of the tip surface of one of the bosses of the second case half, and the signal line cable is sandwiched between the bosses of the first and second case halves by the rib. We adopted a configuration designed to prevent this.

[0016]

With this structure, line ribs can be reliably prevented by the ribs. Further, since the ribs are formed integrally with the boss, sink marks of the ribs do not occur during molding, and the number of parts and the number of assembling steps do not increase. Further, since the rib is formed integrally with the peripheral portion of the tip end surface of the boss, a space around the rib is not taken and the height of the rib itself can be reduced.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. An example of a display case is shown here.

[First Embodiment] FIGS. 1 to 3 illustrate a display case according to a first embodiment of the present invention. FIG. 1 shows the appearance of the display and FIG. 2 shows the display case. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1, showing the back side of the lower case that constitutes it.

In FIG. 1, reference numerals 1 and 5 are a lower case and an upper case, which are case halves constituting the case of the display 10. Reference numeral 7 is an LCD unit (liquid crystal display). 6
Is a signal line cable for connecting the LCD unit 7 and the electronic circuit board mounted inside the electronic device main body (see FIG. 10) to which the display 10 is attached, and bundles a plurality of signal lines with a clothing tube. It is a thing. Reference numeral 8 is a screw for fixing the lower case 1 and the upper case 5 to each other.

As shown in FIG. 2, the LCD unit 7 and the inverter unit 12 are fixed to the back side of the lower case 1 with screws, and the LCD unit 7 and the inverter unit 12 are connected by a cable 13. Further, one end of a cable 6 is connected to the LCD unit 7, and the other end of the cable 6 is led out to the outside via a notch 1d formed in the lower case 4.

A claw 1c is formed on the lower case 1 so as to fit with a claw (not shown) formed on the upper case 5, and the lower case 1 and the upper case 5 are superposed on each other. The upper case 5 and the lower case 1 are temporarily fixed by fitting the above-mentioned claws together.

Further, in order to permanently fix the lower case 1 and the upper case 5 with the screw 8, the lower case 1 is formed with a screwing boss 1a. As shown in FIG. 3, the screw-fastening boss 1a is formed integrally with the lower case 1 so as to project to the inner surface of the lower case 1, and has a bottomed cylindrical shape having a screw hole (not threaded) 1h for inserting the screw 8 in the bottom. Has been done. As a difference from the prior art, ribs 1b are integrally formed on the peripheral edge of the tip surface (lower end surface in FIG. 3) of the screw fastening boss 1a. As shown in FIG. 2, the rib 1b is formed only on the right side screw fixing boss 1a around which the cable 6 is routed among the two screw fixing bosses 1a provided on the left and right.
It is formed in a plate shape that is curved in a semi-arcuate shape along the peripheral edge of the tip surface of a. Further, the rib 1b is formed on the left side portion facing the cable 6 at the peripheral edge of the tip surface of the right screw fixing boss 1a. The height of the rib 1b is set so that the upper case 5 and the lower case 1 do not interfere with the upper case 5 when the upper case 5 and the lower case 1 are superposed and fixed.

On the other hand, as shown in FIG. 3, a cylindrical boss 5a is formed on the inner surface of the upper case 5. Boss 5a
Has a screw hole 5h formed by cutting a screw groove. The outer diameter of the boss 5a is smaller than the inner diameter of the semicircle of the rib 1b.

As described above, when the lower case 1 and the upper case 5 are overlapped and the claws 1c of the lower case 1 and the not shown claws of the upper case 5 are fitted to each other, the lower case 1 and the upper case 5 are temporarily fixed. The screwed boss 1a and the boss 5a are brought into abutment with each other. Then, the screw 8 is inserted into the screw fixing boss 1a, and the screw 8 is passed through the screw hole 1h of the screw fixing boss 1a and tightened in the screw hole 5h of the boss 5 as shown in FIG.
The lower case 1 and the upper case 5 are finally fixed by tightening 5a.

Here, when the bosses 1a and 5a are butted against each other, as shown in FIG. 3, there is the rib 1b on the right side of the drawing in which the cable 6 of the boss 1a is routed.
The cable 6 moves in the bending direction indicated by the arrow in FIG. 2 and is reliably prevented from being caught between the bosses 1a and 5a.

As described above, according to this embodiment, the ribs 1b can surely prevent the line from being broken. Moreover, since the rib 1b is integrally formed with the boss 1a, sink marks due to the rib formation do not occur unlike the case of providing the rib 4b for preventing the line jam of the conventional example described above, and the appearance of the case is not damaged. Further, the rib 1b does not occupy a space in the vicinity of the screwed boss 1a unlike the rib 4b of the conventional example, and the effective space in the display 10 can be ensured accordingly. Further, since the rib 1b is provided so as to project from the tip end surface of the screw fastening boss 1a, the height can be made significantly lower than the rib 4b of the conventional example, and the strength can be increased accordingly. Further, since the rib 1b is integrally molded with the lower case 1 together with the screw fixing boss 1a,
There is no increase in the number of parts or assembly man-hours and no increase in cost.

[Second Embodiment] Next, FIG. 4 shows a second embodiment of the present invention.
FIG. 6 is a cross-sectional view showing the periphery of the screw fastening boss in the assembled state of the lower case and the upper case corresponding to FIG. 3 of the first embodiment according to the embodiment. Here, the lower case is 2, the screw boss is 2a,
The ribs for preventing line smearing are given the reference numeral 2b.

As shown in FIG. 4, the rib 2 is used in this embodiment.
The front end surface (lower end surface) of b has a curved shape, and is provided with what is called a taper or a radius. Although the end surfaces of the left and right side edges of the rib 2b are not shown here, the end surfaces of the left and right side edges are similarly curved.

By thus forming the end surface of the rib 2b into a curved shape, for example, even when the cable 6 is moved and pressed by the rib 2b when the display 10 is rotated, the cable 6 is rubbed. The cable 6 is not damaged. Also,
When combining the upper case 5 and the lower case 2, the rib 2b
Even if the end surface of the cable collides with the cable 6, the cable 6 is not damaged.

The curved surface shape of the end surface of the rib 2b is not limited to the inclined curved surface as shown in the drawing, but may be a curved surface having a semicircular cross section, for example.

[Third Embodiment] By the way, when the above-mentioned upper case and lower case are combined, the screwing boss of the lower case and the boss of the upper case are displaced due to dimensional tolerances or deformation of parts, and the screw holes are different from each other. The position of may be misaligned, and troubles such as not being able to insert the screw straight may occur. Therefore, a third embodiment of the present invention for preventing this problem is shown in FIGS. 5 shows the back side of the lower case in correspondence with FIG. 2, and FIG. 6 shows the periphery of the screw fastening boss in correspondence with FIGS. 3 and 4. Here, the lower case is 3, the screw-fastening boss is 3a, and the line-breaking rib is 3b.
The symbol is attached.

In this embodiment, as shown in FIG. 5, ribs 3b are provided on both of the screw fastening bosses 3a provided at two positions of the lower case 3, and the shape of the ribs 3b is the tip surface of the screw fastening boss 3a. It will be cylindrical along the entire circumference. Further, as shown in FIG. 6, the outer diameter of the boss 5 a of the upper case 5 and the screw-fastened boss 3
The inner diameters of the ribs 3b of "a" are made to substantially match. With this configuration, when the lower case 3 and the upper case 5 are combined, the boss 5a can be fitted into the rib 3b almost tightly, which allows the screwing boss 3a and the screw holes 3h and 5h of the boss 5a to be positioned relative to each other. And the screws 8 are inserted straight so that the screws can be screwed smoothly.

In each of the above embodiments, the lower case 1,
Although the ribs 1b, 2b, 3b for preventing line scribing are provided on the screw fastening bosses 1a, 2a, 3a of the second and third cables, for example, when the LCD unit 7 is mounted on the upper case 5 side, the cable 6 is raised. When it is attached to the case 5 side, the boss 5a of the upper case 5 is provided with a rib for preventing a line smear.

Further, in the above, the screw hole 5h of the boss 5a of the upper case 5 is a screw hole having a thread groove cut off, but the boss 5a is formed in a cylindrical shape and the screw hole 5h has no thread groove and the screw 8 It is also possible to use a screw hole only for inserting the screw and tighten the screw 8 using a nut.

The shapes of the screw fastening bosses 1a, 2a, 3a and the boss 5a are not limited to the cylindrical shape, but may be a polygonal cylindrical shape.

Further, the structure relating to the rib for preventing the line smear as described above is not limited to the display case, and it is needless to say that the same effect can be expected by being similarly applied to the case of other electronic equipment.

[0037]

As described above, according to the present invention,
By stacking the first and second case halves each having a boss having a screw hole formed on each inner surface of the boss so that the bosses of the first and second case halves are butted against each other and tightened with a screw. In an electronic device case in which the first and second case halves are fixed to each other, a rib is integrally formed on the peripheral edge portion of the tip end surface of one of the first and second case halves, Since the ribs prevent the signal line cable from being sandwiched between the bosses of the first and second case halves, the following excellent effects can be obtained.

(1) It is possible to surely prevent line scuffing without impairing the appearance of the case.

(2) The rib does not take up a space, and a large effective space in the case can be secured.

(3) The height of the rib can be reduced to increase the strength.

(4) No increase in the number of parts and the number of assembly steps,
It can be realized at low cost.

(5) If the end surface of the rib is formed in a curved shape, the signal line cable can be prevented from being damaged.

(6) If the rib is formed in a cylindrical shape having a size that allows the boss formed with the rib and the butted boss to be fitted closely, the screw holes of the butted bosses can be aligned with each other. The screws can be screwed in smoothly.

[Brief description of drawings]

FIG. 1 is a front view showing an appearance of a display unit having a display unit case according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a back side of a lower case which constitutes the case of the embodiment.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a cross-sectional view near a screw fastening boss of a display case according to a second embodiment.

FIG. 5 is a plan view showing the back side of the lower case of the third embodiment.

FIG. 6 is a cross-sectional view of the display case of the embodiment near the screw fastening boss.

FIG. 7 is a front view of an indicator having a conventional indicator case.

8 is a sectional view taken along line BB in FIG.

FIG. 9 is a plan view showing a back side of a lower case of a conventional example.

FIG. 10 is a perspective view of an electronic device to which a display is attached.

[Explanation of symbols]

 1 to 4 lower case 1a to 4a screw fixing boss 1b to 4b rib for preventing line jamming 5 upper case 5a boss 6 signal line cable 7 LCD unit 8 screw 10 indicator

Claims (3)

[Claims] 1. A first and a second case halves each having a boss having a screw hole formed on each inner surface thereof so as to project from each other, and the bosses of the first and second case halves are butted against each other. In an electronic device case in which the first and second case halves are fixed to each other by tightening with screws, a rib is provided on a peripheral edge portion of the tip end surface of one of the first and second case halves. The rib is formed integrally, and the first rib is formed by the rib.
An electronic equipment case characterized in that a signal line cable is prevented from being sandwiched between the bosses of the second case half body and the boss. 2. The electronic device case according to claim 1, wherein an end surface of the rib is formed in a curved surface shape. 3. The electronic device according to claim 1, wherein the rib is formed in a tubular shape having a size such that a boss that is abutted with a boss that forms the rib can be fitted into the boss almost closely. Equipment case.