JP2000077867A - Fitting structure for liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a display glass from being flawed or damaged. SOLUTION: A protector 5 is so attached to the rear surface of a case 2 as to cover a display window 2a of the case 2 of a device. A fixing plate 7 is fixed to a boss 5b of the protector 5 through a sleeve 8. A liquid crystal display device 10 is supported for free vertical movement with the sleeve 8 as a guide, being energized upward by a spring 17. Ribs 5c and 5d which engage with the peripheral end part of a display glass 15 of the liquid crystal display device 10 are protruded above the rear surface of the protector 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a liquid crystal display used for displaying electronic equipment and the like.

[0002]

2. Description of the Related Art In general, in this type of mounting structure of a liquid crystal display, when a protector covering the liquid crystal display is pressed by an external force, an elastically deformed protector presses the surface of the liquid crystal display, thereby causing a liquid crystal display. In order to prevent the display glass of the display from being scratched or broken, a gap is provided between the protector and the surface display glass of the liquid crystal display.

FIG. 4 is a sectional view of a conventional liquid crystal display mounting structure. This will be described with reference to the figure. Reference numeral 2 denotes a casing of the apparatus formed of a metal plate material, in which a rectangular display window 2a is formed, and a back surface 4 around the periphery of the display window 2a. Four stud bolts 3 (two stud bolts 3 are not shown) are vertically provided by welding at the locations. Reference numeral 5 denotes a protector formed of a transparent resin material in the form of a flat plate and having a rectangular shape in a plan view. A rectangular exposed portion 5a whose outer shape is slightly smaller than the above-described display window 2a protrudes from the surface thereof. 5
a is fitted to the display window 2 a and attached to the back surface of the housing 2 by a nut 6 screwed to the stud bolt 3.

[0004] Reference numeral 10 denotes a liquid crystal display, which includes a printed wiring board 11 having electronic components mounted on its back surface, a conductive rubber 14 and a display glass 15 fixed on the printed wiring board 11 by frames 16a and 16b. It is formed by the liquid crystal 13 sealed in a space surrounded by the conductive rubber 14 and the display glass 15. This liquid crystal display 10 is screwed into the back surface of the above-described protector 5 via four sleeves 21,
The thickness t between the front surface of the display glass 15 and the back surface of the protector 5
The protector 5 is attached to the back surface side such that a gap 19 is provided.

[0005]

However, the gap 1
If the thickness t of 9 is set to be large, the viewing angle of the liquid crystal display is narrowed, and the display function as the liquid crystal display is impaired. Therefore, the thickness t is limited. For this reason, as shown in FIG.
When an external force is applied, the exposed portion 5a is elastically deformed and curved, and despite the presence of the gap 19, the exposed portion 5a is formed.
May press the surface of the display glass 15 and damage the display glass 15. In particular, when the outer shape of the liquid crystal display 10 is increased in order to improve the display function of the liquid crystal display 10, the outer shape of the exposed portion 5a of the protector 5 is also increased, so that the amount of elastic deformation of the exposed portion 5a is also increased. The display glass 15 may be damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a mounting structure for a liquid crystal display device which prevents a display glass from being damaged or damaged. It is in.

[0007]

In order to achieve this object, according to the first aspect of the present invention, there is provided a protector for covering a display window formed in an apparatus housing, and a gap provided on a back side of the protector. In the mounting structure of the liquid crystal display comprising the liquid crystal display, a spring receiver is fixed on the back surface of the protector at an interval, and the liquid crystal display is moved between the spring receiver and the protector with respect to the protector. A biasing member is provided between the spring receiver and the liquid crystal display for supporting the liquid crystal display against the back surface of the protector. An engagement member that engages with the back surface is provided. Therefore, when the protector is pressed toward the liquid crystal display by an external force, the liquid crystal display moves in a direction away from the protector via the engaging member, so that a gap between the liquid crystal display and the protector is maintained. According to a second aspect of the present invention, in the first aspect of the present invention, the engaging member is a projection protruding from a rear surface of the protector so as to correspond to a surface other than a display portion of the liquid crystal display. It is. Therefore, the projection can be formed integrally with the protector. Further, the portion where the projection of the protector is engaged with the liquid crystal display is a portion other than the display portion.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a mounting structure of a liquid crystal display according to the present invention, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is a cross-sectional view for explaining an operation state. In these figures, the same reference numerals are given to the same or equivalent members described in the prior art shown in FIG.
Detailed description is omitted as appropriate. In FIG. 2, four bosses 5b (two bosses 5b are not shown) are integrally provided on the back surface of the protector 5, and as shown in FIG. Facing two pairs of ribs 5c,
5c, 5d and 5d are frames 16 of the liquid crystal display 10.
a, 16a, 16b, and 16b. As shown in FIG. 1, the surface of the protector 5 is subjected to an opaque treatment except for a portion 5e surrounded by a rectangle located inside the ribs 5c, 5c, 5d, and 5d, so that a transparent portion is formed. 5e forms a display part.

A sleeve 8 is attached to the boss 5b of the protector 5.
A fixing plate 7 as a spring receiver is attached by a screw 9 screwed to the boss 5b through the hole, and a rectangular relief hole 7a is formed in the center of the fixing plate 7. At the four corners of the printed wiring board 11 of the liquid crystal display 10,
Four sliding holes 11a (two sliding holes 11a are not shown) are formed, and these sliding holes 11a are inserted into the above-mentioned sleeve 8 so that the liquid crystal display 10
Is supported by the sleeve 8 so as to be movable up and down. Further, a compression coil spring 17 fitted to the sleeve 8 is interposed between the printed wiring board 11 and the fixed plate 7, and the printed wiring board 11 is urged upward in the figure, and is pressed by the boss 5b. Is engaged. In this state, the frames 16a and 16b of the liquid crystal display 10 are
Are engaged with the ribs 5c and 5d.

In such a configuration, as shown in FIG. 3, when an external force P is applied to the exposed portion 5a of the protector 5, the exposed portion 5a is elastically deformed toward the liquid crystal display 10. At this time, the frames 16a, 16 of the liquid crystal display 10 are
Since the ribs 5c and 5d of the protector 5 are in contact with the frame 5b, the engagement of the rib 5d corresponding to the portion of the exposed portion 5a with the largest deformation and the frame 16b causes the liquid crystal display 10 to move downward in the figure. Pressed. Therefore, the sliding hole 11a of the printed wiring board 11 slides using the sleeve 8 as a guide against the urging force of the compression coil spring 17, and the liquid crystal display 10 moves downward.

For this reason, even if the exposed portion 5a is elastically deformed,
The central portion of the exposed portion 5a having the largest elastic deformation surrounded by the ribs 5c and 5d and the display glass 1 of the liquid crystal display 10
The gap 19 between the center of the lens 5 and the center 5 is maintained. Therefore,
The exposed portion 5a does not come into contact with the display portion 10a and does not press the display portion 10a, thereby preventing the display glass 15 from being damaged. The ribs 5c and 5d are provided on the frame 16 located at a position other than the portion corresponding to the display portion 5e of the protector 5.
a, 16b, the ribs 5c, 5d
Even if the display glass 15 is scratched due to the contact, the display by the display unit 10a will not be disturbed.

In this embodiment, the engaging members are the ribs 5c and 5d protruding from the protector 5.
The thicknesses of the frames 16a and 16b may be thicker than usual, and the protector 5 and the frames 16a and 16a may be thicker.
16b may be formed of another member. Further, although the fixed plate 7 is used as the spring receiver, a flange may be formed at the end of the sleeve 8 and this flange may be used as the spring receiver. Although the printed wiring board 11 is a member movable on the sleeve 8, a bracket for fixing the liquid crystal display 10 may be used, and various design changes are possible. Although the compression coil spring 17 is used as a member for urging the liquid crystal display 10 upward, a member that can be elastically deformed, such as a flat spring or rubber, may be used.

[0013]

As described above, according to the first aspect of the present invention, even if the protector is pressed toward the liquid crystal display by an external force, the liquid crystal display is separated from the protector via the engaging member. Since it moves, the gap between the liquid crystal display and the protector is maintained. Therefore, since the liquid crystal display is not pressed by the protector, the display section of the liquid crystal display is prevented from being damaged.

Further, according to the second aspect of the present invention, since the projection can be formed integrally with the protector, manufacturing is easy. In addition, the portion where the protrusion of the protector is engaged with the liquid crystal display is a portion other than the display portion, and even if it is scratched, the display does not directly hinder the display.

[Brief description of the drawings]

FIG. 1 is a plan view showing a mounting structure of a liquid crystal display according to the present invention.

FIG. 2 is a sectional view showing a mounting structure of a liquid crystal display according to the present invention.

FIG. 3 is a cross-sectional view for explaining an operation state in the mounting structure of the liquid crystal display according to the present invention.

FIG. 4 is a sectional view showing a mounting structure of a conventional liquid crystal display.

FIG. 5 is a cross-sectional view for explaining an operation state in a conventional liquid crystal display mounting structure.

[Explanation of symbols]

2 ... Housing, 5 ... Protector, 5a ... Exposed part, 5c, 5d
... Ribs, 5e ... Display part, 7 ... Fixing plate, 8 ... Sleeve, 10 ... Liquid crystal display, 11 ... Printed wiring board, 13 ...
Liquid crystal, 15: display glass, 16a, 16b: frame,
17: compression coil spring, 19: gap.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H089 HA40 JA10 QA02 TA01 2H092 NA11 PA01 4E353 AA07 AA16 AA17 AA18 BB02 CC02 CC08 CC12 CC13 CC16 CC32 CC33 DD02 DD05 DD15 DR08 DR22 DR27 DR32 DR36 DR49 GG29

Claims (2)

[Claims] 1. A mounting structure for a liquid crystal display comprising: a protector for covering a display window formed in an apparatus housing; and a liquid crystal display provided with a gap on the back side of the protector. A spring receiver is fixed at an interval, and the liquid crystal display is supported between the spring receiver and the protector so as to be freely movable toward and away from the protector, and between the spring receiver and the liquid crystal display. A liquid crystal display, comprising: an urging member for urging the liquid crystal display against the back surface of the protector; and an engaging member engaging the front surface of the liquid crystal display and the back surface of the protector. Mounting structure. 2. The mounting structure for a liquid crystal display according to claim 1, wherein the engaging member is a projection protruding from a rear surface of the protector so as to correspond to a surface of the liquid crystal display other than a display portion. A liquid crystal display mounting structure characterized by the following.