CN1324539C - frame structure - Google Patents

Abstract

An outer frame structure comprises a first frame body and a second frame body. The first frame body comprises a first surface, a first positioning lug and a second positioning lug, wherein the first positioning lug and the second positioning lug protrude from the first surface. The second frame body comprises a first positioning part and a second positioning part, and the first positioning lug and the first positioning part are combined to limit the relative movement of the first frame body and the second frame body in the direction parallel to the first surface. The first frame body and the second frame body can be limited to move relatively in the direction vertical to the first surface through the combination of the second positioning lug and the second positioning part.

Description

frame structure

technical field

The invention relates to an outer frame structure, in particular to an outer frame structure suitable for a backlight module.

Background technique

First please refer to FIG. 1 , which shows a schematic diagram of the frame structure of a conventional display backlight module. As shown in the figure, the frame structure of the backlight module of a traditional display is mainly composed of a first frame body 10 in the shape of a "mouth" and a second frame body 20, wherein the first frame body 10 is arranged on the second frame body 20 inside surface. Generally speaking, the aforementioned first frame body 10 can be made of plastic or rubber, while the second frame body 20 is made of metal material, wherein the first frame body 10 is in contact with an optical element located in the center of the outer frame structure. The aforementioned optical elements may include elements such as display panels, light guide plates, diffusion plates, and prism sheets.

During assembly, a first surface 10' on the aforementioned first frame body 10 is correspondingly engaged with a second surface 20' inside the second frame body 20, wherein the first surface 10' is provided with a plurality of first positioning The protruding block 101 is further provided with a plurality of corresponding first positioning portions 201 on the second surface 20 ′. As shown in Figure 1, the aforementioned first positioning portion 101 is an opening. During assembly, the first positioning projection 201 can be snapped into the first positioning portion 101 to prevent the first and second frames 10, 20 slide each other.

However, this design for avoiding the mutual sliding of the first and second frames 10, 20 is only applicable to the general "mouth"-shaped frames. frame, it is not applicable.

For the above assembly methods, a common solution is to use adhesive tape or adhesive to prevent the first and second frame bodies 10 and 20 from loosening after being combined. However, the use of tapes or adhesives will inevitably increase the cost of materials and assembly. In addition, tapes or adhesives are not conducive to repeated use and have a short lifespan, so they are not an ideal assembly method.

Contents of the invention

In view of the shortcomings of the traditional assembly method, the present invention provides an outer frame structure, which is suitable for a backlight module, and includes a first frame body and a second frame body. The aforementioned first frame body includes a first surface and first and second positioning projections protruding from the first surface, wherein the second positioning projection is a column with a T-shaped cross section. The aforementioned second frame body includes first and second positioning parts, the second positioning part is a guide groove, and the combination of the first positioning protrusion and the first positioning part can limit the first and second frame bodies to be parallel to the first surface Relative motion in the direction of . In addition, the combination of the second positioning protrusion and the second positioning portion can limit the relative movement of the first frame and the second frame in a direction perpendicular to the first surface.

In a preferred embodiment, the aforementioned first positioning portion has an opening, and the first positioning protrusion passes through the aforementioned opening.

In a preferred embodiment, the aforementioned second positioning protrusion is a cylinder with a T-shaped cross section, and the second positioning portion is a guide groove.

In a preferred embodiment, the aforementioned first frame body is made of plastic.

In a preferred embodiment, the aforementioned second frame is made of metal.

In a preferred embodiment, the aforementioned first frame body is combined with the inner surface of the second frame body.

In a preferred embodiment, the aforementioned first frame body is a strip.

The present invention also provides an outer frame structure suitable for a backlight module, comprising: a first frame body including a first positioning protrusion and a second positioning protrusion, wherein the second positioning protrusion is a A column with a glyph cross-section; and a second frame, including a first positioning portion and a second positioning portion, the second positioning portion is a guide groove, and the first positioning projection is combined with the first positioning portion , the second positioning protrusion is combined with the second positioning part; wherein, the first positioning protrusion is combined with the first positioning part and restricts the first frame body and the second frame body to face each other in a first direction movement, the second positioning protrusion is combined with the second positioning portion and restricts the relative movement of the first frame body and the second frame body in a second direction, the first direction is parallel to the light emitting direction of the backlight module, And the second direction is perpendicular to the first direction.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, specific preferred embodiments are specifically cited below and described in detail in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the schematic diagram of existing frame structure;

Fig. 2 is a schematic diagram of the outer frame structure of the present invention;

Fig. 3 is the schematic diagram of the first frame in the present invention;

Fig. 4A is a cross-sectional view of the aforementioned first positioning protrusion parallel to the XZ plane;

Fig. 4B is a sectional view of the aforementioned second positioning protrusion parallel to the XY plane;

Fig. 5 is a schematic diagram when the first and second frames are combined;

Figure 6A is an enlarged view at A in Figure 5; and

FIG. 6B is an enlarged view at B in FIG. 5 .

Detailed ways

Please firstly refer to FIG. 2 , the frame structure of the present invention can be applied to a backlight module, wherein the light output direction of the backlight module is consistent with the Z-axis direction (as shown by the arrow). The above-mentioned outer frame structure mainly includes a plurality of elongated first frame bodies 10 and a rectangular second frame body 20 , wherein each first frame body 10 is respectively disposed on the inner surface of the second frame body 20 . In this embodiment, the aforementioned first frame body 10 is a strip made of plastic or rubber material, and the second frame body 20 is made of metal material, which can be abutted and fixed outside by the aforementioned first frame body 10 during assembly. An optical element in the center of the frame structure.

In FIG. 2, the first surface 10' of the aforementioned first frame body 10 is correspondingly bonded to the second surface 20' inside the second frame body 20; A positioning protrusion 101 is provided, and a plurality of corresponding first positioning portions 201 are disposed on the second surface 20 ′. In this embodiment, the above-mentioned first positioning part 201 is an opening, and the first positioning protrusion 101 can be snapped into the first positioning part 201 during assembly, so that the first and second frame bodies 10, 20 relatively slides in a first direction (direction parallel to the YZ plane).

In particular, the first frame body 10 in this embodiment is further provided with a plurality of second positioning protrusions 102, and in addition, the second frame body 20 is provided with a corresponding second positioning portion 202, through the second positioning The combination of the protrusion 102 and the second positioning portion 202 can further prevent the relative movement of the first and second frame bodies 10 and 20 in a second direction (X-axis direction), wherein the second direction is perpendicular to the aforementioned first direction .

Please refer to FIG. 3 and FIG. 4A together, wherein FIG. 3 shows a perspective view of the first frame body 10 , and FIG. 4A shows a cross-sectional view of the aforementioned first positioning protrusion 101 parallel to the XZ plane. As shown in FIG. 4A, the aforementioned first positioning protrusion 101 protrudes from the first surface 10' in the X-axis direction, wherein the first positioning protrusion 101 can be, for example, a wedge-shaped block and has a slope 101' During assembly, the first positioning projection 101 slides on the second surface 20' of the second frame body 20 in the direction indicated by the arrow until it engages with the first positioning portion 201, wherein the inclined surface 101' can reduce the resistance, and the first positioning protrusion 101 can be smoothly engaged in the aforementioned first positioning portion 201 . Certainly, the shape of the first positioning protrusion 101 is not limited to a wedge shape, and the inclined surface 101' is not necessary, as long as it is a protrusion that can be combined in the first positioning portion 201 in principle.

Next, please refer to FIG. 2 and FIG. 4B together, wherein FIG. 4B shows a cross-sectional view of the aforementioned second positioning protrusion 102 parallel to the XY plane. In this embodiment, the second positioning protrusion 102 is a cylinder with a T-shaped cross section, and the second positioning portion 202 has a corresponding guide groove. As shown in Figure 3, during assembly, by inserting the aforementioned second positioning projection 102 into the second positioning portion 202 along the direction indicated by the arrow, it can effectively prevent the first and second frame bodies 10, 20 from moving in the X-axis direction. produce loosening. Of course, the shape of the second positioning protrusion 102 is not limited to the cylinder with a T-shaped cross-section, other such as a cylinder with an inverted L-shaped cross-section or a cylinder with a C-shaped cross-section, etc., can block the first 1. The loose structure of the second frame bodies 10 and 20 in the X-axis direction can meet the requirements of the present invention.

Next, please refer to FIG. 5 , FIG. 6A and FIG. 6B together, wherein FIG. 6A and FIG. 6B represent enlarged views of A and B in FIG. 5 . As shown in the figure, when the first frame body 10 is combined with the second frame body 20, the aforementioned first and second protrusions 101, 102 are correspondingly combined in the first and second positioning parts 201, 202, thereby It can prevent the first and second frame bodies 10, 20 from sliding or loosening in the X-axis, Y-axis and Z-axis directions.

To sum up, the present invention provides a frame structure, which can be applied to a backlight module or a display panel. The outer frame structure of the present invention can be combined with the aforementioned first and second frame bodies without adhesive tape or adhesive, and can prevent sliding or loosening between the two, which is not only convenient for assembly, but also greatly saves material costs .

Although the present invention has been disclosed in combination with the above preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art can still make some changes and modifications without departing from the spirit and scope of the present invention, so The scope of protection of the present invention should be defined by the claims.

Claims (14)

1. An outer frame structure comprising:

a first frame body including a first positioning bump, a second positioning bump and a first surface, wherein the first positioning bump and the second positioning bump protrude from the first surface, and the second positioning bump is a cylinder with a T-shaped cross section; and

the second frame body comprises a first positioning part and a second positioning part, and the second positioning part is a guide groove;

the first positioning bump is combined with the first positioning part and limits the first frame body and the second frame body to move relatively in a direction parallel to the first surface, and the second positioning bump is combined with the second positioning part and limits the first frame body and the second frame body to move relatively in a direction perpendicular to the first surface.

2. The external frame structure of claim 1, wherein the first positioning portion has an opening, and the first positioning protrusion passes through the opening.

3. The external frame structure of claim 1, wherein the first frame body is made of plastic.

4. The external frame structure of claim 1, wherein the first frame body is combined with the inner side surface of the second frame body.

5. The external frame structure of claim 1, wherein the first frame body is a bar.

6. A frame structure for a backlight module comprises:

a first frame body including a first positioning bump and a second positioning bump, wherein the second positioning bump is a cylinder with a T-shaped cross section; and

a second frame body including a first positioning portion and a second positioning portion, the second positioning portion being a guide groove, the first positioning protrusion being combined with the first positioning portion, the second positioning protrusion being combined with the second positioning portion; wherein,

the first positioning bump is combined with the first positioning portion and limits relative movement of the first frame and the second frame in a first direction, the second positioning bump is combined with the second positioning portion and limits relative movement of the first frame and the second frame in a second direction, the first direction is parallel to the light emitting direction of the backlight module, and the second direction is perpendicular to the first direction.

7. The external frame structure of claim 6, wherein the first positioning portion is an opening, and the first positioning protrusion passes through the opening.

8. The external frame structure of claim 6, wherein the first frame body is made of plastic.

9. The external frame structure of claim 6, wherein the first frame body is combined with the inner side surface of the second frame body.

10. The external frame structure of claim 6, wherein the first frame body is a bar.

11. An outer frame structure comprising:

a first frame body, comprising: a first surface; a first positioning bump which is a wedge-shaped block and protrudes out of the first surface; a second positioning bump, which is a column with T-shaped cross section and protrudes out of the first surface; and

a second frame body, comprising: a second surface; a first positioning portion located on the second surface and having an opening corresponding to the first positioning bump; and a second positioning part which is positioned on the second surface and is provided with a guide groove corresponding to the second positioning lug.

12. The external frame structure of claim 11, wherein the first frame body is made of plastic.

13. The external frame structure of claim 11, wherein the first frame body is combined with the inner side surface of the second frame body.

14. The external frame structure of claim 11, wherein the first frame body is a bar.

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