JP4547865B2 - Case structure of electronic device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a case structure of an electronic device.
[0002]
[Prior art]
As a case structure of a liquid crystal display panel which is one of electronic devices, there is one in which a liquid crystal display panel is accommodated in a pair of shield cases for countermeasures against static electricity (for example, see Patent Document 1). In this case, one shield case has a structure in which side walls are provided on the four sides of the rectangular plate, and engagement protrusions are provided at predetermined positions on each side wall. The other shield case has a structure in which side walls are provided on the four sides of the rectangular plate, and engagement holes are provided at predetermined positions on each side wall. Then, the side wall of one shield case is fitted into the side wall of the other shield case, and the engagement protrusion of one shield case is engaged with the engagement hole of the other shield case, thereby integrating both shield cases. Yes.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 6-3655
[Problems to be solved by the invention]
However, in the conventional case structure, when the size of one shield case is slightly larger than the size of the other shield case, it is difficult to fit the side wall of one shield case into the side wall of the other shield case, In the opposite case, there is a problem that the fitting of the side wall of one shield case into the side wall of the other shield case becomes loose and it is easy to come off.
Accordingly, an object of the present invention is to provide a case structure of an electronic device in which a pair of shield cases can be easily fitted to each other and the fitting is not loosened.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 is an electronic device case structure in which a side wall of one shield case is fitted into a side wall of another shield case to integrate the shield cases, and the shield cases have four side walls. Each of the four pairs of side walls disposed opposite to each other in a state in which the shield cases are integrated with each other. One end that is one end of both ends of each tip of the pair of side walls and each other that is the other end of both ends of each tip of the first pair of side walls Between each predetermined position spaced from each one end of the first set by a predetermined length shorter than the length between the end and each one end of the first set, Of the side walls of both shield cases Each of the four sets of the pair of side walls, each of the pair of side walls of the second set adjacent to the first set has a pair of the second set of side walls. One end of the side wall closer to the first set out of both ends of the front end and the far end of the pair of side walls of the second set far from the first set square each predetermined location spaced from said only a short predetermined length than the length the second set of the respective end portions between the other end and the second set of the one end of the In the meantime, wedge-shaped notches are respectively provided on the surfaces of the shield cases facing each other.
According to a second aspect of the present invention, in the first aspect of the present invention, the notch is provided at a front end of a side wall of two opposite corners of the one shield case. Is.
According to a third aspect of the present invention, in the second aspect of the present invention, a wedge is formed on a surface facing the notch portion of the one shield case at the end of the side wall of the two opposite corner portions of the other shield case. A notch having a shape is provided.
And according to this invention, since the wedge-shaped notch is provided on the surface facing the side wall of the other shield case in at least part of the side wall tip of at least one of the shield cases, Even if the sizes of both shield cases are slightly difficult to fit, the pair of shield cases can be easily fitted to each other by the wedge-shaped cutout portions, and the fit can be prevented from loosening.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view of a main part of a liquid crystal display module as one embodiment of the present invention, FIG. 2 is a plan view of the state where the front shield case is removed in FIG. 1, and FIG. A sectional view along III is shown. This liquid crystal display module includes a front shield case 1 and a back shield case 11, and a liquid crystal display panel 21 is accommodated in both shield cases 1 and 11.
[0007]
The front shield case 1 is formed by pressing a metal plate having a predetermined shape, and has a structure in which side walls 3 are provided downward on four sides of the rectangular plate 2. In this case, a rectangular opening 4 for displaying a liquid crystal display panel is provided at a predetermined position of the rectangular plate 2.
[0008]
Further, two opposite corner portions of the front shield case 1, that is, the right end portion of the upper side wall 3 and the upper end portion of the right side wall 3, the left end portion of the lower side wall 3, and the lower end of the left side wall 3 in FIG. A wedge-shaped cutout portion 5 is provided at each front end portion of the portion by chamfering. Further, although not shown, a hemispherical engagement protrusion is provided at the substantially central portion in the length direction of each side wall 3 so as to protrude outward.
[0009]
The back shield case 11 is formed by pressing a metal plate having a predetermined shape, and has a structure in which side walls 13 are provided upward on four sides of the rectangular plate 12. In this case, a rectangular opening 14 for transmitting backlight light is provided at a predetermined position of the rectangular plate 12.
[0010]
Further, two opposite corner portions of the back shield case 11, that is, the right end portion of the upper side wall 13 and the upper end portion of the right side wall 13, the left end portion of the lower side wall 13, and the lower end of the left side wall 13 in FIG. A wedge-shaped cutout portion 15 is provided at each front end portion with the portion by chamfering. Furthermore, although not shown in the drawing, a circular engagement hole is provided in a substantially central portion in the length direction of each side wall 13.
[0011]
In the liquid crystal display panel 21, a front glass substrate 22 and a back glass substrate 23 are bonded together via a substantially rectangular frame-shaped sealing material (not shown), and liquid crystal (between the glass substrates 22 and 23 inside the sealing material ( (Not shown) is injected, and the front and back polarizing plates 24 and 25 are attached to the outer surfaces of the glass substrates 22 and 23, respectively.
[0012]
In this case, the right side and the lower side in FIG. 2 of the back side glass substrate 23 protrude from the front side glass substrate 22, and semiconductor chips 26, 27 made of liquid crystal driving LSIs or the like are provided at predetermined positions on these protrusions. Is installed. One end of the flexible wiring board 28 is bonded to a predetermined portion of the back glass substrate 23. The other end of the flexible wiring board 28 is connected to a circuit board (not shown). The flexible wiring board 28 is for supplying display signals from the circuit board to the semiconductor chips 26 and 27.
[0013]
Next, the case where the liquid crystal display panel 21 is accommodated in the back shield case 11 will be described with reference to FIG. In this case, when the four sides of the outer surface of the back glass substrate 23 of the liquid crystal display panel 21 are attached to the inner surface around the opening 14 of the back shield case 11 via a double-sided adhesive tape (not shown), the liquid crystal display panel 21. Is housed in the back shield case 11. Here, the side walls 3 and 13 on the right side of FIG. 1 of the shield cases 1 and 11 correspond to the flexible wiring board 28 in order to pull out the other end portion of the flexible wiring board 28 to the outside of the shield cases 1 and 11. It is not provided in the area.
[0014]
Next, a case where the front shield case 1 is fitted into the back shield case 11 will be described. In this case, in FIG. 1, the size between the outer surfaces of the two opposing side walls 3 of the front shield case 1 is slightly larger than the size between the inner surfaces of the two opposing side walls 13 of the rear shield case 11. (See FIG. 4).
[0015]
First, in FIG. 1, the upper left part (the left end part of the upper side wall 3 and the upper end part of the left side wall 3) is the lower side, and the lower right part (the lower side wall 3 of the lower side wall 3). With the front shield case 1 tilted to some extent with the right end portion and the vicinity thereof as the upper side, the upper left portion of the front shield case 1 is the upper left portion of the rear shield case 11 (the left end portion of the upper side wall 13 and the left side wall 13). Into the upper end of
[0016]
Next, in FIG. 1, the upper right portion (the right end portion of the upper side wall 3 and the upper end portion of the right side wall 3) and the lower left portion (the left end portion of the lower side wall 3 and the lower end portion of the left side sidewall 3) ) Are fitted into the upper right part (the right end part of the upper side wall 13 and the upper end part of the right side wall 13) and the lower left part (the left end part of the lower side wall 13 and the lower end part of the left side wall 13). .
[0017]
In this case, as shown in FIG. 4, the outer surface of the upper right portion and the lower left side wall 3 of the front shield case 1 is positioned slightly outside the upper surface of the rear shield case 11 and the inner surface of the left lower side wall 13. Since the wedge-shaped notch 5 is provided on the outer surface of the tip of one side wall 3 and the wedge-shaped notch 15 is provided on the inner surface of the tip of the other side wall 13, these notches 5, 15 are provided. By the mutual wedge action, the upper right portion and the lower left portion of the front shield case 1 can be easily fitted into the upper right portion and the lower left portion of the back shield case 11.
[0018]
Next, in FIG. 1, the lower right portion (the right end portion of the lower side wall 3 and the lower end portion of the right side wall 3) is connected to the lower right portion (the right end portion and the right side of the lower side wall 13) of the front side shield case 1. Fit into the lower end of the side wall 13). If the upper right part and the lower left part of the front side shield case 1 are inserted in the upper right part and the lower left part of the back side shield case 11, this fitting can be performed smoothly following that.
[0019]
In this way, when the four side walls 3 of the front shield case 1 are fitted into the four side walls 13 of the back shield case 11, the hemispheres provided at substantially the center in the length direction of the respective side walls 3 of the front shield case 1 The engaging protrusion in the shape is engaged with a circular engaging hole provided at a substantially central portion in the length direction of each side wall 13 of the back shield case 11, whereby the shield cases 1 and 11 are integrated.
[0020]
In this integrated state, the size between the outer surfaces of the two opposing side walls 3 of the front shield case 1 is initially the inner surface of the two opposing side walls 13 of the rear shield case 11 in FIG. The fitting is not loosened by being slightly larger than the size in between.
[0021]
Note that the cutout portion 5 may be provided only in the front shield case 1, and the cutout portion 15 may be provided only in the back shield case 11. Moreover, the notch part 5 may be provided in the front-end | tip part of all the side walls 3 of the front side shield case 1, and the notch part 15 may be provided in the front-end | tip part of all the side walls 3 of the back side shield case 11. Further, the present invention is not limited to the case structure of the liquid crystal display panel, but can be applied to the case structure of other electronic devices.
[0022]
【The invention's effect】
As described above, according to the present invention, a wedge-shaped notch is provided on a surface facing the side wall of the other shield case in at least a part of the front end of the side wall of at least one of the shield cases. Therefore, even if the size of both shield cases is slightly difficult to fit, the pair of shield cases can be easily fitted to each other by the wedge-shaped notch, and the fit should not be loosened. be able to.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part of a liquid crystal display module as one embodiment of the present invention.
FIG. 2 is a plan view showing a state where a front shield case is removed in FIG. 1;
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view similar to FIG. 3 for explaining a case where the front shield case is fitted into the back shield case. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front side shield case 3 Side wall 5 Notch part 11 Back side shield case 13 Side wall 15 Notch part 21 Liquid crystal display panel

Claims (3)

In a case structure of an electronic device in which the side walls of one shield case are fitted into the side walls of another shield case to integrate the shield cases, the shield cases have four sidewalls, respectively. Among the four pairs of side walls arranged opposite to each other in an integrated state, the tip portions of the pair of side walls of the first set are arranged at the tip portions of the pair of side walls of the first set. One end of each of the two ends of the first pair, the other end of the pair of side walls of the first set and the other end of the other end of the ends of the pair of side walls and the first set Between the predetermined positions spaced from the one end portions of the first set by a predetermined length shorter than the length between the one end portions, the side walls of the shield cases are opposed to each other. A wedge-shaped notch on each surface It provided, on each tip of the pair of side walls of the second set adjacent to said first set of said four sets of a pair of said side walls, each of the tip portions of the pair of side walls of the second set One end of the two ends of the pair of side walls closer to the first set, and the other end of the pair of side walls of the second set farther from the first set of both ends of the tip ends. The both shield cases between the predetermined positions spaced apart from the one end portions of the second set by a predetermined length shorter than the length between the one end portions of the second set. A case structure of an electronic device, wherein wedge-shaped cutout portions are respectively provided on surfaces of the side walls of the substrate facing each other.   The electronic device case structure according to claim 1, wherein the notch is provided at a front end portion of a side wall of two opposing corner portions of the one shield case.   In a second aspect of the present invention, a wedge-shaped notch is provided on a surface facing the notch of the one shield case at the end of the side wall of the two opposite corners of the other shield case. A case structure of an electronic device.

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