JPH10206831A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the assembly and to make repair and replacement easy by fitting a projection part of a fitting arm part with elasticity in a recessed part and boring holes in a front plate and a rear plate opposite an end part of the fitting arm part. SOLUTION: A liquid crystal display body 16 is put in a back frame body 7 and a front frame part 1 is put on it and then pressed in. Then the lower end part of a side plate 5 of the front frame body 1 abuts against a slanting part 15 of the fitting arm part 10 and is pressed in downward while making the fitting arm part 10 bend inwardly, and when the lower end of the projection part 13 of the fitting arm part 10 meets the recessed part 4, the projection part 13 is fitted in the recessed part 13 by the elasticity of the fitting ant part 10 to engage it. At this time, an end surface 14 and a groove part 12 of the fitting arm part 10 face a hole 6 and the upper part of the slanting part 15 comes out of the recessed part 4; and the liquid crystal display body 16 is fitted by being clamped between a front plate 3 and a 2 rear plate 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device in which the frame is easily disassembled and the liquid crystal display can be easily repaired or replaced.

[0002]

2. Description of the Related Art In a conventional liquid crystal display device, as shown in FIGS. 6 and 7, a front frame 30 made of a metal plate includes a front plate 32 having an opening 31 and a side plate 34 having a plurality of mounting legs 33. The box-shaped rear frame 35 made of a synthetic resin includes a rear plate 36 and a side plate 38 having a plurality of recesses 37. Although not shown here, a liquid crystal display element, a printed circuit board for driving, a light guide,
A liquid crystal display 39 formed by laminating a reflection plate, a diffusion plate and the like is housed in the back frame 35,
3 is bent and locked in the concave portion 37, and a liquid crystal display 39 is sandwiched and attached between the back plate 36 of the back frame 35 and the front plate 32 of the front frame 30.

Since such a liquid crystal display device is expensive,
When a component constituting the liquid crystal display 39 is broken or damaged, the component is repaired or replaced. Conventionally, when a problem is found in the liquid crystal display body 39 during the inspection process of the liquid crystal display device, or when a failure or breakage occurs during use, first, the bent mounting leg 33 is returned to the original state. Then, the front frame 30 and the rear frame 35 are disassembled. Thereafter, the liquid crystal display 39 is taken out, and after repairing and replacing parts of the liquid crystal display 39, the liquid crystal display 39 is stored in the rear frame 35 again, and the front frame 30 is covered and mounted. The leg 33 is bent and locked in the recess 37.

[0004]

In a conventional liquid crystal display device, mounting legs 33 provided on a side plate 34 of a front frame 30 are provided.
Is bent and locked in the concave portion 37 of the rear frame 35, so that the assembling workability is poor and the cost is increased. In addition, when the components of the liquid crystal display 39 are repaired or replaced, the frame is disassembled. For this reason, the mounting legs 33 must be bent back to the original state, and there is a problem that the disassembling operation is troublesome and time-consuming. The mounting leg 33 is assembled, disassembled,
Furthermore, since the assembly and the bending are repeated each time, there is a problem that the mounting leg 33 is broken due to fatigue.

[0005]

As a first solution for solving the above-mentioned problems, a front frame, a back frame, and a liquid crystal sandwiched and attached between the front frame and the back frame are provided. A mounting body having a display body, and having a concave portion in one of the side plate of the front frame body and the side plate of the rear frame body, and having a convex portion fitted in the concave portion in the other. And a hole is provided in the front plate of the front frame body facing the end face of the mounting arm portion or in the back plate of the rear frame body so as to face the end face. Further, as a second solving means, the mounting arm portion has a configuration in which a groove portion facing the hole is provided between two convex portions. Further, as a third solution, the rear frame is formed of a synthetic resin, and the rear frame is provided with a plurality of the mounting arms.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid crystal display device according to the present invention is
A description will be given based on the embodiment shown in FIGS. A front frame 1 made of a metal plate has a rectangular front plate 3 having an opening 2.
A side plate 5 which is bent downward from the periphery of the front plate 3 and has a plurality of recesses 4 formed of holes; and a plurality of holes 6 provided in the front plate 3 near each of the recesses 4. ing. A box-shaped rear frame 7 made of a synthetic resin includes a rear plate 8, a side plate 9 extending upward from the periphery of the rear plate 8,
A plurality of mounting arms 1 having spring properties formed on the side plate 9
0, and notches 11 provided on both sides of the mounting arm 10 of the side plate 9.

[0007] The mounting arm 10 has an outer portion,
It has two convex portions 13 provided on both sides of a groove portion 12 formed in the vertical direction, and an inclined portion 15 inclined on the end surface 14 side from below and provided on the upper surface of the convex portion 13. doing. Further, these mounting arms 10 are provided in the recesses 4.
The protrusion 13 can be fitted into the recess 4, and the end face 14 faces the hole 6 provided in the front plate 3 of the front frame 1.

Although not shown here, the liquid crystal display 16 includes a liquid crystal display, a driving printed board, a light guide,
The liquid crystal display 16 is accommodated in a hollow portion of the rear frame 7, and a reflection plate, a diffusion plate and the like are sequentially laminated.
The protrusion 13 of the mounting arm 10 is fitted into the recess 4 of the front frame 1, the front frame 1 and the rear frame 7 are combined, and the liquid crystal display 16 is sandwiched between the two frames 1 and 7. Be attached. At this time, the end surface 14 of the mounting arm 10 and the groove 12 are in a state of facing the hole 6 provided in the front plate 3, and the upper part of the inclined portion 15 is slightly out of the recess 4.

Next, assembling of the liquid crystal display device will be described. First, as shown in FIG. 3, the liquid crystal display 16 is housed in the back frame 7, and then the front frame 1 is covered from above. Push the front frame 1 in the direction of the arrow. Then, the lower end of the side plate 5 of the front frame 1 contacts the inclined portion 15 of the mounting arm 10 and is pushed downward while bending the mounting arm 10 inward. As shown by the solid line, when the lower end of the projection 13 is aligned with the recess 4, the projection 13
Due to the resiliency of the mounting arm 10, it is fitted and locked in the recess 4 as shown by the dotted line. At this time, the end surface 14 of the mounting arm 10 and the groove 12 face the hole 6 and the inclined portion 1
The upper part of 5 is pulled out of the concave part 4, and the liquid crystal display 16 is attached by being sandwiched between the front plate 3 and the back plate 8. Thus, the assembly of the liquid crystal display device is completed.

In the liquid crystal display device assembled as described above, when a problem is found in the liquid crystal display body 16 in the inspection process, or when a failure or breakage occurs during use, as shown in FIG. First, a jig 17 having a plurality of wedge-shaped tips attached to one holder (not shown) is prepared. And a plurality of jigs 17
Are arranged so as to face the holes 6 of the front frame 1, and then the jigs 17 are simultaneously inserted into the holes 6.
When the mounting arm 10 is bent in a direction in which the mounting arm 10 is disengaged from the recess 4 by using the mounting arm 10 as a guide, the rear frame 7 is Remove from body 1. Thereafter, the liquid crystal display 16 is taken out from the rear frame 7, and after the parts of the liquid crystal display 16 are repaired and replaced, the liquid crystal display 16 is stored in the rear frame 7 again, and as described above. Then, when the front frame 1 is put on the back frame 7 and pushed in, the projection 13 of the mounting arm 10 is locked in the recess 4 so that the two frames 1 and 7 are combined.

In the above embodiment, the front frame 1 may be used for the rear frame, and the rear frame 7 may be used for the front frame.
In this case, when disassembling the frame, the jig 17 is inserted into the hole 6 with the jig 17 being positioned below.

[0012]

According to the present invention, the projection of the mounting arm having spring properties is fitted and mounted in the recess, and a hole is formed in the front plate or the rear plate facing the end of the mounting arm. The front frame and the rear frame can be assembled simply by fitting them together.The assembly is easy and the productivity is good, and only the jig is inserted into the hole. Thus, both frames can be disassembled, and repair and replacement of parts of the liquid crystal display can be facilitated. Further, by providing a groove between the two convex portions, the groove serves as a guide when the jig is inserted, and the frame body is easily disassembled. Furthermore, by providing a plurality of mounting arms on the rear frame, the liquid crystal display can be assembled and disassembled in a normal state with the top surface of the liquid crystal display facing upward, and the work can be facilitated. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a liquid crystal display device of the present invention.

FIG. 2 is an enlarged perspective view of a portion K in FIG. 1 according to the liquid crystal display device of the present invention.

FIG. 3 is an explanatory view showing a method of assembling the liquid crystal display device of the present invention.

FIG. 4 is an explanatory view showing a method of assembling the liquid crystal display device of the present invention.

FIG. 5 is an explanatory view showing a disassembly method of the liquid crystal display device of the present invention.

FIG. 6 is a perspective view of a conventional liquid crystal display device.

FIG. 7 is a sectional view of a main part of a conventional liquid crystal display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front frame 2 opening 3 front plate 4 recess 5 side plate 6 hole 7 back frame 8 back plate 9 side plate 10 mounting arm portion 11 cut portion 12 groove portion 13 convex portion 14 end surface 15 inclined portion 16 liquid crystal display device 17 jig

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Satoshi Matsubara 1-7 Yukitani Otsuka-cho, Ota-ku, Tokyo Alps Electric Co., Ltd.

Claims (3)

[Claims] 1. A front frame, a rear frame, and a liquid crystal display sandwiched and mounted between the front frame and the rear frame, wherein a side plate of the front frame and a rear frame of the rear frame are provided. A concave portion is provided on any one of the side plates, and a mounting arm portion having a spring property having a convex portion fitted into the concave portion is provided on the other side, and the front frame body facing the end face of the mounting arm portion is provided. A liquid crystal display device, wherein a hole is provided in the front plate or the back plate of the back frame so as to face the end face. 2. The mounting arm portion is provided between two convex portions.
2. The liquid crystal display device according to claim 1, wherein the liquid crystal display device has a configuration including a groove portion facing the hole. 3. The liquid crystal display device according to claim 2, wherein said back frame is formed of synthetic resin, and said plurality of mounting arms are provided on said back frame.