TWI532427B - Frame device - Google Patents

Description

Frame device

The present invention relates to a fixture, and more particularly to a frame assembly for positioning an optical diaphragm.

In the backlight of the liquid crystal display device, the light guide plate is housed in the plastic frame, and an optical film composed of a multilayer film such as a reflective film, a lower diffusion film, a ruthenium film and an upper diffusion film is disposed above the light guide plate, wherein each layer of the film is usually It is made of plastic material with a thickness of 0.1~0.2mm, and the total thickness of the optical film is less than 1mm. The edge portion of the optical film is supported on the upper surface of the plastic frame (this portion belongs to the non-display area). In order to prevent the optical film from moving or falling off during the transportation and assembly of the backlight, it is necessary to design an optical film fixing structure.

At present, the commonly used optical film is positioned in two ways. One way is to fix the optical film directly to the frame with adhesive, but this method is equivalent to pulling the optical film with adhesive instead of the optical film. It is fixed, so it is easy to cause the optical film to be displaced during transportation, and it is easy to cause the optical film to waviness in an environment with high temperature and high humidity or large temperature difference between cold and heat.

Referring to Figures 1 and 2, another way is to attach a plurality of fixing buckles 11 (only one is shown due to the viewing angle) to the majority of the adhesive layer 100. The frame 12 of the optical film 13 is clamped between the fixing buckle 11 and the plastic frame 12. Although the above method can avoid the direct adhesion of the optical film 13, the fixing buckle 11 is adhered to the plastic frame 12 only by the adhesive layer 100, and has no other fixed structure, and the transportation is still unavoidable during transportation. The possibility that the fixing buckle 11 is detached also causes the optical film 13 to be displaced.

Accordingly, it is an object of the present invention to provide a frame device that provides a preferred positioning function.

Therefore, the frame device of the present invention is configured to position an optical film having a plurality of protrusions spaced apart from each other, the frame device comprising a frame and a plurality of fixing buckles disposed on the frame. The frame comprises a frame surrounding an accommodating space, and a plurality of positioning units spaced along the circumference of the frame and located on the same plane. Each of the fixing buckles is detachably disposed on the frame by a corresponding positioning unit, and the optical film is disposed in the accommodating space, and the optical is fixed by the corresponding fixing buckle and the positioning unit. The corresponding protrusion of the diaphragm is clamped therein.

The effect of the invention is that, through the structural design of the positioning unit and the frame, the corresponding fixing buckle can be more stably positioned on the frame body, thereby effectively reducing the chance of the optical film falling off during transportation and improving the product. Yield.

2‧‧‧Optical diaphragm

21‧‧‧Stretching

211‧‧‧through holes

3‧‧‧Border

31‧‧‧ frame

310‧‧‧ accommodating space

311‧‧‧Box

32‧‧‧ Positioning unit

321‧‧‧ card hook

322‧‧‧Positioning column

323‧‧‧Second guiding bevel

324‧‧‧ positioning group

325‧‧‧Flange

326‧‧‧Positioning holes

4‧‧‧Fixed buckle

41‧‧‧ Body segment

411‧‧‧ Limit hole

42‧‧‧Card section

421‧‧‧Card Department

422‧‧‧First guiding bevel

423‧‧‧Bumps

424‧‧‧ Guided arc

5‧‧‧Adhesive layer

6‧‧‧Clamping space

L1‧‧‧ distance

L2‧‧‧ distance

L3‧‧‧ distance

L4‧‧‧ distance

X‧‧‧ length direction

Z‧‧‧Width direction

Other features and effects of the present invention will be described with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial plan view showing a state in which an optical film is positioned by a fixing buckle; FIG. 2 is a partial cross-sectional view for assistance in explaining FIG. 1; FIG. 3 is a top view illustrating A first preferred embodiment of the frame device of the present invention; FIG. 4 is a side elevational view showing the structure of a fixing buckle and a positioning unit in the first preferred embodiment; FIG. 5 is a side cross-sectional view. FIG. 6 is a perspective view, which is also a perspective view of FIG. 4; FIG. 7 is an exploded perspective view showing a second preferred embodiment of the frame device of the present invention. For convenience of explanation, the optical film is omitted in the drawing; FIG. 8 is a perspective cross-sectional view for explaining the combined state of FIG. 7; FIG. 9 is a perspective cross-sectional view of another angle, which also assists the description of the combined state of FIG. 7; FIG. 10 is a side cross-sectional view showing the dimensional relationship between the corresponding fixing buckle and the positioning unit in the second preferred embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figure 3, a first preferred embodiment of the frame assembly of the present invention is used to position an optical film 2 having a plurality of projections 21 spaced apart from each other. It is to be noted that the optical film 2 is actually composed of a multilayer film, and for convenience of explanation, the following description and the drawings The whole of the film is regarded as the optical film 2 .

As shown in FIGS. 3 and 4, the frame device includes a frame 3, a plurality of fixing buckles 4 disposed on the frame 3, and a plurality of adhesive layers for adhering the fixing buckles 4 to the frame 3. 5. The frame 3 includes a frame 31 surrounding an accommodating space 310, and a plurality of positioning units 32 spaced along the circumference of the frame 31 and located on the same plane.

Referring to FIG. 4 , each positioning unit 32 has two hooks 321 disposed on the frame 31 and facing each other, and a positioning post protruding from the frame 31 and located between the two hooks 321 . 322.

Each of the fixing buckles 4 has an elongated body portion 41 and two clamping segments 42 extending integrally from opposite ends of the body portion 41 in a direction away from each other. The adhesive layer 5 is disposed on each The two clamping sections 42 of the fastening buckle 4 are attached. The two card segments 42 of each of the fixing buckles 4 are respectively bent from opposite ends of the body segment 41 toward the frame body 31, and then extend away from each other to make the body segment 41 and the frame body. A clamping space 6 is formed between 31. Each of the card segments 42 has a locking portion 421 for engaging with the corresponding hooks 321 . The end of each of the locking portions 421 has a first guiding slope 422 . Each of the hooks 321 of each positioning unit 32 has a second guiding slope 323 that cooperates with the first guiding slope 422. As shown in FIG. 3, the body segment 41 of each of the fastening buckles 4 has a limiting hole 411 corresponding to the positioning post 322 of the corresponding positioning unit 32.

Referring to Figures 3 and 4, each of the projections 21 of the optical film 2 has a pair of through holes 211 to which the posts 322 should be positioned. When disposed, the optical film 2 is disposed in the accommodating space 310, and the protruding portion 21 is extended. Between the two hooks 321 of the corresponding positioning unit 32, the through holes 211 of each of the protruding portions 21 are correspondingly sleeved on the corresponding positioning posts 322. Then, each of the fixing buckles 4 is disposed between the two hooks 321 of the corresponding positioning unit 32 according to the direction indicated by the arrow in FIG. 4, and as shown in FIG. 3, the limiting hole 411 of each fixing buckle 4 is shown in FIG. It is the position corresponding to the positioning of the column 322.

It should be particularly noted that the mutually corresponding fixing buckles 4 and the positioning units 32 are combined with each other in a tight fit manner. That is, as shown in FIG. 4, the minimum distance L1 between the two second guiding slopes 323 of each positioning unit 32 is smaller than the distance between the two first guiding slopes 422 of the corresponding clamping section 42. The maximum distance L2 is such that when the two first guiding slopes 422 pass through the two second guiding slopes 323, the two hooks 321 are slightly opened, and the two first guides are After the inclined surface 422 passes through the two second guiding inclined surfaces 323, as shown in FIG. 5, the two hooks 321 will return to the original position, and the two clamping portions 421 are tightly pressed to form a tight fitting state, and the optical is made. The projections 21 of the diaphragm 2 are located in the corresponding clamping spaces 6.

Through the design of the first and second guiding slopes 422 and 323, each fixing buckle 4 is smoothly positioned between the two hooks 321 and the two hooks 321 are respectively locked in the corresponding clamping sections. The corresponding adhesive layer 5 is adhered to the frame 31 on the card portion 421 of the cover 42, and the protruding portion 21 of the optical film 2 can be clamped to the corresponding portion as shown in Figs. The fixing buckle 4 is between the frame 31 and the frame 31. It should be noted that the adhesive layer 5 is used to strengthen the bonding strength between the fixing buckle 4 and the frame body 31. If the fixing buckle 4 and the frame 3 are processed with sufficient precision, the two are closely combined. In this case, the adhesive layer 5 may not be provided.

Through the above design, the present invention enhances the degree of bonding between the fixing buckle 4 and the frame 31 by the structural cooperation of the hook 321 of the positioning unit 32 and the locking portion 421 of the fixing buckle 4, and then The fixing buckle 4 is adhered to the frame body 31 by using the adhesive layer 5 to avoid the situation that the fixing buckle 4 is detached during transportation, thereby improving the positioning effect of the optical film 2 and the product. rate.

Referring to FIG. 7 and FIG. 8 , a second preferred embodiment of the frame device of the present invention, wherein the frame 31 has a plurality of frame strips 311 which are connected to each other and surround the receiving space 310 (only display due to the viewing angle) The positioning unit 32 is spaced apart from the frame strip 311, and each of the frame strips 311 has a length direction X and a width direction Z.

As shown in FIG. 7 , each positioning unit 32 has two positioning groups 324 spaced apart along the length direction X of the corresponding frame strip 311 . The positioning pillars 322 are protruded from the corresponding frame strips 311 and are located in the two positioning groups 324 . between. Each positioning group 324 has two flanges 325 extending from the corresponding frame strip 311 away from the frame strip 311. The two flanges 325 are spaced apart along the width direction Z of the frame strip 311. Each flange 325 has a locating aperture 326. Each of the fixing buckles 4 has an elongated body portion 41 and two clamping segments 42 extending integrally from opposite ends of the body portion 41 in a direction away from each other. The thickness of the body segment 41 of each of the fixing buckles 4 is smaller than the two clamping segments 42 such that the clamping space 6 is formed between the body segment 41 and the frame body 31. Each of the card segments 42 has two protrusions 423 that protrude laterally and respectively correspond to the positioning holes 326 of the flange 325 (only one side of the bumps 423 are shown due to the viewing angle). As shown in FIGS. 7 and 9, each of the bumps 423 has a guiding curved surface 424.

The arrangement of the embodiment is the same as that of the first preferred embodiment. As shown in FIG. 7 and FIG. 8 , when the protrusion 21 of the optical film 2 is disposed, the two positioning positions of the corresponding positioning unit 32 are extended. Between the groups 324 and extending into the corresponding clamping space 6, the through holes 211 of each of the protruding portions 21 are correspondingly sleeved on the corresponding positioning posts 322. Then, each of the fixing buckles 4 is disposed between the two positioning groups 324. As shown in FIGS. 8 and 9, each of the clamping segments 42 is disposed between the two flanges 325 of the same positioning group 324. The bumps 423 are respectively locked in the corresponding positioning holes 326. The design of the guiding curved surface 424 of each of the bumps 423 can also smoothly position each of the fixing buckles 4 between the two positioning groups 324, and the corresponding adhesive layer 5 is adhered to the corresponding frame. On line 311.

As shown in FIG. 10, the maximum distance L3 between the guiding cam faces 424 of the bumps 423 of each of the clamping segments 42 is greater than the minimum distance L4 between the corresponding two flanges 325, so that during the installation process When the two guiding curved surfaces 424 pass through the two flanges 325, the upper ends of the two flanges 325 are slightly expanded, and after passing through the upper ends of the two flanges 325, the two convex blocks 423 are stuck. A state of tight fitting is formed in the corresponding positioning hole 326. With the above design, the present embodiment can also achieve the same effects as the first preferred embodiment, and provide another use aspect.

In summary, the frame device of the present invention enhances the combination between the fixing buckle 4 and the frame 31 by the structure of the hook 321 of the positioning unit 32 and the locking portion 421 of the fixing buckle 4. And fixing the fixing buckle 4 to the frame body 31 by using the adhesive layer 5 to avoid the situation that the fixing buckle 4 falls off during transportation, thereby lifting the optical film 2 The positioning effect and the yield of the product can indeed achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

2‧‧‧Optical diaphragm

21‧‧‧Stretching

211‧‧‧through holes

3‧‧‧Border

31‧‧‧ frame

32‧‧‧ Positioning unit

321‧‧‧ card hook

322‧‧‧Positioning column

323‧‧‧Second guiding bevel

4‧‧‧Fixed buckle

41‧‧‧ Body segment

42‧‧‧Card section

421‧‧‧Card Department

422‧‧‧First guiding bevel

5‧‧‧Adhesive layer

6‧‧‧Clamping space

L1‧‧‧ distance

L2‧‧‧ distance

Claims (12)

A frame device for positioning an optical film having a plurality of protrusions spaced apart from each other, the frame device comprising: a frame comprising a frame surrounding an accommodating space, and a plurality of edges The positioning unit is disposed on the same plane at a periphery of the frame; and a plurality of fixing buckles, each fixing buckle is detachably disposed on the frame by a corresponding positioning unit, and the optical film is The protrusions corresponding to the optical film are clamped therein by the fixing buckles and the positioning units corresponding to each other. The frame device of claim 1, wherein each of the fastening buckles has a strip-shaped body segment, and two card segments extending integrally from opposite ends of the body segment away from each other, each The positioning unit has two hooks which are disposed on the frame and face each other. The hooks can be respectively engaged with the corresponding fastening segments of the fastening buckle to clamp the protruding portion of the optical film. Hold between the frame and the corresponding fixing buckle. The frame device of claim 2, wherein the two card segments of each of the fastening buckles are respectively bent from opposite ends of the body segment toward the frame body, and then extend away from each other, so that A clamping space is formed between the body segment and the frame, and the protruding portion of the optical film extends into the clamping space. The frame device of claim 3, wherein each of the fastening segments of each of the fastening buckles has a locking portion for the corresponding hook, each The end of the locking portion has a first guiding slope, and each hook of each positioning unit has a second guiding slope matching the first guiding slope, and the card is installed when each fixing buckle is installed The first guiding slope of the segment cooperates with the second guiding slope of the corresponding hook to engage the two hooks of each positioning unit with the corresponding clamping segment. The frame device of claim 4, wherein each positioning unit further has a positioning post protruding from the frame and located between the two hooks, and the body segment of each fixing buckle has a pair of positioning The limiting hole of the column, each protrusion of the optical film has a pair of through holes that should be positioned. The frame device of claim 5, further comprising a plurality of adhesive layers for adhering the fixing buckle to the frame, the adhesive layer being disposed on the two clamping segments of each fixing buckle on. The frame device of claim 1, wherein the frame has a plurality of frame strips connected to each other and surrounding the accommodating space, the positioning unit is spaced apart from the frame strip, and each frame strip is defined a length direction, and a width direction, each positioning unit has two positioning groups spaced along the length direction of the corresponding frame strip, and the protruding portion of the optical film is the two positioning groups extending to the corresponding positioning unit Between each positioning group has two flanges extending from the corresponding frame strips away from the frame strips, the two flanges are spaced along the width direction of the frame strips, each flange has a positioning hole Each fixing buckle has a strip-shaped body segment, and two clamping segments integrally extending from opposite ends of the body segment away from each other, Each of the card segments has two laterally projecting protrusions corresponding to the positioning holes of the flanges, each of the clamping segments being disposed between the two flanges of the same positioning group, and the protruding blocks They are respectively locked in the corresponding positioning holes. The frame device of claim 7, wherein the thickness of the body segment of each of the fastening buckles is smaller than the two clamping segments, so that a clamping space is formed between the body segment and the frame, the optical film The projection extends into the clamping space. The frame device of claim 8, wherein the projection of each of the fastening buckles has a guiding curved surface. The frame device of claim 9, wherein each positioning unit further has a positioning post protruding from the corresponding frame strip and located between the two positioning groups, each protruding portion of the optical film having a The positioning hole corresponding to the positioning column. The frame device of claim 7, further comprising a plurality of adhesive layers for adhering the fixing buckle to the corresponding frame strip, wherein the adhesive layer is disposed on the two clamping segments of each fixed buckle on. The frame device according to claim 1, wherein the fixing buckles and the positioning units corresponding to each other are combined with each other in a tight fit manner.