JP2000314872A - Frame for shielding liquid crystal display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame for shielding liquid crystal display and a manufacturing method thereof by which the material is saved and the cost is reduced. SOLUTION: All of or one of frame-like panels constituting the shielding frame of the liquid crystal display is set as plural constituting members 10a and 10b, and each end part of respective constituting members to be mutually connected is mechanically coupled and integrated so as to form a frame-like panel, so that the shielding frame for the liquid crystal display panel is obtained. The fitting locking member 11 of each constituting member mutually coupled is constituted of single or plural projected and recessed parts having a furrow part 11c, and the projected part is provided with a boss part 11a. A frame-like panel constituting member is made as two nearly L-shaped members split at a corner part. As a manufacturing method, the frame-like panel constituting member is punched by a press machine, and the fitting locking part is formed at a part to mutually couple each constituting member, and each fitting locking part is fitted and locked with each other, and a fitting locking portion is bent after caulking the fitting locking portion of the fitting locking part in the up- and-down direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielding frame for a liquid crystal display and a method for manufacturing the same.

[0002]

2. Description of the Related Art An outer periphery and a rear portion of a liquid crystal display are covered with a shielding frame 1. The shielding frame 1 usually has a three-layer structure, and as shown in FIG. , A frame-shaped center panel 1b at the middle, and a rear panel 1c at the rear. The center panel 1b has a structure to be fitted into the front panel 1a. Alternatively, some small liquid crystal displays do not have a center panel. The one indicated by the instruction symbol 2 is a liquid crystal display.

The frame-shaped front panel 1a and center panel 1b are bent so that the cross section of each side is L-shaped. The manufacturing process is such that a band-shaped plate material wound into a roll is pressed by a press machine. First, a frame-shaped expanded state as shown in FIG. 11 is formed, and the edge of each side is bent to form a cross section of each side as shown in FIG.
The front panel 1a and the center panel 1b in the shape of a letter have been formed. It is to be noted that what is shown is a center panel, and the detailed specific shape is different, but the basic manufacturing process is the same as that of the front panel, so that the illustration is omitted.

[0004]

The above-mentioned conventional front panel and center panel are manufactured by pressing a rolled-up band-shaped plate material in the manufacturing process, which is in a developed state having a frame shape of the entire panel. The center part a, which is hollowed out to fit or fit into the edge of the liquid crystal display, which is hatched in FIG. Therefore, there is no other choice but to discard this part, and there is a disadvantage that the material is wasted. In particular, the materials for the center panel and the front panel are made of stainless steel or aluminum, and the price is higher than that of an iron plate.

An object of the present invention is to provide a shield frame for a liquid crystal display and a method for manufacturing the same, which can save the material and reduce the cost significantly compared with the prior art.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention comprises a frame-like panel constituting a shield frame of a liquid crystal display, in which all or a part thereof is divided into a plurality of constituent members. Then, each of the divided constituent members to be connected to each other is mechanically connected to each other and integrated to form a frame-shaped panel.

[0007] The present invention also provides a liquid crystal display in which all or a part of a frame-like panel constituting a shielding frame having a planar polygonal shape is divided at a plurality of locations at each corner. A frame-like panel is obtained by mechanically connecting and integrating the respective ends of the respective constituent members to be connected to each other.

In this case, according to the present invention, a fitting engagement portion is provided at each end of each component member to be connected to each other, and the shape of each engagement engagement portion is changed to one or more convex portions each having a constricted portion. And a concave portion, and a convex portion is further provided with a boss portion, or a constituent member constituting a frame-shaped panel is formed into two L-shapes divided at a corner portion, Can be composed of four components.

According to the present invention, a fitting engagement portion is formed at each end of each component member to be connected to each other, and then the fitting engagement portions are fitted and locked. It is characterized in that the parts are integrated with each other by crimping the parts from above and below. The present invention also enhances the integration of each other by bending the joining portions of the fitting and locking portions of the respective components, and furthermore, a plurality of components constituting the frame-shaped panel are formed using a press machine. Punching, at the same time as this punching step or in a separate step, a fitting engagement portion is formed at a portion to be connected to each of the constituent members, and then the fitting engagement portion of this fitting engagement portion is caulked, It is characterized in that the fitting and locking portions are bent to further strengthen the integration with each other.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment in which the present invention is applied to a center panel of a shield frame of a liquid crystal display. As shown in FIG. 1, each of the constituent members 10 a and 10 b constituting the center panel 10 having a rectangular frame shape described below has a diagonal position forming a corner when these are combined in a frame shape. As shown in FIGS. 2 to 4, each of the two ends is formed into a substantially L-shape, and is connected to each other.
Pierce-shaped protrusions 11a and 12 having a flat shape as a pierced shape
a and engagement fitting portion 1 comprising pierced recesses 11b and 12b
1 and 12 are provided. The portion protruding to the outside of each side or being separated by a dotted line is a bending margin 10c when the cross section is bent into an L-shape. Piercing convex part 1
Narrow portions 11c and 12c are provided in the pierce-shaped concave portions 11b and 12b, respectively, so that when they are fitted to each other, they are devised so as not to be engaged and separated in the horizontal direction. 11a and 12a have a boss 1
1d and 12d are formed by half blanking by press working.

The constituent members 10a and 10b are connected and connected in a plane direction to form a frame-shaped center panel.
The fitting portions 11 and 12 are overlapped from the vertical direction to form pierced projections 11a and 12a and pierced recesses 11b and 12b.
Are mechanically engaged. With this configuration, the frame-shaped center panel is developed, and the constituent members 10a and 10b are not separated from each other in the horizontal direction.

In this manner, when the fitting and locking portions 11 and 12 are crimped from the vertical direction using a press machine, the boss portions 11d and 12d are plastically deformed and expanded, and the pierce-shaped convex portion 1 is expanded.
The fitting engagement between the pierce-shaped recesses 11b and 12b and the pierce-shaped recesses 11b and 12b can be made dense to achieve integration.

Next, using a press machine, bend margin 1 of each side
When the center panel 1b is bent, as shown in FIGS. 5 to 8, the center panel 1 has a rectangular frame shape with each side having an L-shaped cross section.
0 is formed.

At this time, as shown in FIGS. 7 and 8, when the portions of the fitting and locking portions 11 and 12 are bent, the engagement of the fitting and locking portions becomes horizontal and vertical. Both are not easily separated from each other, and the integration of each component is further strengthened.

FIG. 9 shows an embodiment in which the component 10a or 10b constituting the center panel is punched out by using a press machine. As shown in the drawing, a strip-shaped member wound in a roll is used. Stainless steel and aluminum 13
By continuously punching out each component in a V-shape or an inverted V-shape using
Since there is no waste of the material of the central part a to be hollowed out,
Material costs can be greatly reduced. The components are shown in simplified form. It has been found that the embodiment saves about 68% of material.

Next, the shape of the fitting / locking portion in the above-described embodiment is a round pierce-shaped protrusion and a round pierce-shaped recess, but is not limited to this shape. This can be made into a square, a wedge, a jigsaw puzzle, etc. provided with a constriction or a boss.

The constituent members 11 and 12 can be connected so as not to be separated from each other by using, for example, a metal adhesive tape other than the mechanical means described above. In this case, there is a case where it is not always necessary to provide a fitting engagement portion at the coupling end of each component member. In this specification, the term "mechanical coupling" is used, including the case where this adhesive tape is used.

Further, each component may be divided into four strips at each corner, and these may be combined as described above to bend the edges to form a center panel. Alternatively, the component may be formed into a substantially U-shape in a plane when the component is punched out by a press. In that case,
It may be sent in a direction perpendicular to the feed direction of punching out a band-shaped material with a press, and punching may be performed.
Prepare a thin band-shaped material corresponding to the developed width of the constituent members, and send it automatically or manually to make constituent members constituting four sides, and make each of the above-mentioned components into a planar square shape. The connection may be made by means.

Although the above embodiment has been described with reference to the case where the present invention is applied to the center panel, it can be applied to the front panel as it is. The present invention may be applied to only the center panel, or may be applied to both the center panel and the front panel, as required. In the case where the two parts are divided into two parts, the strength is increased by shifting the fitting positions by 90 ° so that the divided parts do not overlap each other.

[0020]

The present invention is configured as described above.
The following effects can be obtained.

According to the first and second aspects of the present invention, the components of the front panel and the center panel for the shield frame can be continuously punched out of the strip-shaped plate without wasting the material. Material costs can be greatly reduced compared to stamping out as a single plate without dividing into components, such as front panels and center panels for shield frames, which significantly reduces manufacturing costs. The effect that can be performed can be produced.

According to a third aspect of the present invention, the convex and concave portions having the constricted portion of the fitting and locking portion provided at the joint end of each component are fitted and locked in the vertical direction, and the boss portion is fixed. When it is tightened, the fitting and locking state of each fitting portion becomes dense, so that the components can be integrated.

According to the fourth aspect of the present invention, it is possible to pierce the component members into a substantially V-shape with respect to the band-shaped material, so that the material can be largely saved, and the joining portions of the divided component members can be formed. Since there are two places, joining can be facilitated, and an effect that the strength is not inferior to the conventional one that is punched in a frame shape from the beginning can be obtained.

According to the fifth aspect of the present invention, the constituent members can be punched out from a thin strip-shaped plate material as compared with the case of the fifth aspect, the material cost can be reduced, and the constituent members can be punched out with a smaller press. Accordingly, the constituent members can be easily manufactured at low cost.

According to the sixth aspect of the present invention, each component can be integrated as one frame, and the effect of preventing horizontal separation of the panel can be obtained.

According to the seventh aspect of the invention, it is difficult to separate the panel in the front-rear direction, and the panel can be more integrated.

According to the eighth aspect, not only the horizontal separation of the panel after bonding but also the separation in the front-rear direction becomes difficult, and the integration of the panel combining the constituent members can be further enhanced. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is an exploded plan view of a center panel constituting a shield frame according to the present invention in an unfolded state.

FIG. 2 is an enlarged view of a part viewed from A of the component shown in FIG. 1;

FIG. 3 is a side view of the component shown in FIG. 2;

FIG. 4 is an enlarged view of a portion viewed from B of the component shown in FIG. 1;

FIG. 5 is a plan view of a center panel in which fitting and locking portions, which are joint portions of the components shown in FIG. 1, are fitted and locked, and furthermore, bending margins on each side are bent.

FIG. 6 is a side view of the center panel of FIG.

FIG. 7 is a partially enlarged explanatory view showing a state in which a joint portion between the fitting and locking portions in a portion viewed from C in FIG. 5 is bent.

FIG. 8 is a partially enlarged explanatory view showing a state where a joint portion between the fitting and locking portions in a portion viewed from D in FIG. 5 is bent.

FIG. 9 is an explanatory diagram showing a mold when punching out each component of the panel from a band-shaped plate.

FIG. 10 is an exploded perspective view illustrating a configuration of a shielding frame of the liquid crystal display.

FIG. 11 is a plan view showing a state before bending a center panel of a conventional shielding frame.

FIG. 12 is a plan view showing a state after bending processing of a center panel of a conventional shielding frame.

[Explanation of symbols]

 Reference Signs List 10 Center panel 10a Constituent member 10b Constituent member 11 Fitting / locking portion 11a Piercing convex portion 11b Piercing concave portion 11c Neck portion 11d Boss portion 12a Piercing convex portion 12b Piercing concave portion 12c Constriction portion 12d Boss portion 12 Part 13 Material

Claims (8)

[Claims] 1. A shielding frame for a liquid crystal display, wherein a whole or a part of a frame-like panel constituting the shielding frame is divided into a plurality of constituent members, and each of the divided parts is constituted. A frame for a shield of a liquid crystal display, wherein each end of a member to be connected to each other is mechanically connected and integrated to form a frame-shaped panel. 2. A shielding frame having a planar polygonal shape of a liquid crystal display, wherein all or a part of a frame-like panel constituting the shielding frame is divided into a plurality of portions at each corner. A frame for a shield of a liquid crystal display, wherein each of the divided constituent members to be connected to each other is mechanically connected and integrated to form a frame-shaped panel. 3. A fitting locking portion is provided at each end of each component member to be connected to each other, and each of these fitting locking portions is constituted by one or a plurality of convex portions and concave portions each having a constricted portion. 3. The shielding frame for a liquid crystal display according to claim 1, wherein a boss is further provided on the projection. 4. The liquid crystal according to claim 1, wherein the constituent members forming the frame-shaped panel are formed into two substantially L-shaped parts divided at a corner portion. Display shield frame. 5. A frame-shaped panel comprising four components constituting each side.
A shielding frame for a liquid crystal display according to claim 1. 6. A fitting engagement portion is formed at a portion of each component member to be connected to each other, and then each fitting engagement portion is engaged with each other, and the fitting engagement portion is vertically moved. The method for manufacturing a shield frame for a liquid crystal display according to claim 1, wherein each component is integrated by crimping. 7. The liquid crystal according to claim 6, wherein the edge of each side of each component member is bent including the joint portion of the fitting and locking portion to enhance the integration with each other. A method for manufacturing a display shielding frame. 8. A plurality of constituent members constituting a frame-shaped panel are punched by using a press machine, and a fitting engagement portion is provided at a portion where the respective constituent members are joined to each other simultaneously with or separately from the punching step. The fitting and locking parts are fitted and locked with each other, and the fitting and locking parts of the fitting and locking parts are crimped from the vertical direction, and then the fitting and locking parts are bent. The method for manufacturing a shield frame for a liquid crystal display according to claim 1, wherein the method comprises the steps of: