CN1441285A - Metal frame of liquid crystal display and electrical module board assembly - Google Patents

Abstract

The invention discloses a metal frame and electric module board assembly of a liquid crystal display, wherein the metal frame comprises an inner ring part and an upright part, and the inner ring part is provided with a plurality of positioning holes formed in one side edge of the metal frame. The electric module board includes: a circuit board and at least one vertical side board. The vertical side plate is arranged on one side of the circuit board and provided with a plurality of hooks which are formed at the opposite positions of the positioning holes of the inner ring part, and the hooks are suitable for being accommodated in the positioning holes so that the electric module board is assembled to the metal frame. By using the assembly structure of the invention, the grounding of the electric module board can be electrically connected to the metal frame, so that the grounding characteristic is good and the circuit operation is stable. In addition, the assembling structure of the invention is quite convenient to disassemble, does not damage the electric module or the metal frame, and has quite high reusability.

Description

Metal frame of liquid crystal display and electrical module board assembly

technical field

The invention relates to a metal frame and an electric module board. Specifically, the invention relates to a metal frame and an electric module board assembly of a liquid crystal display.

Background technique

As shown in FIG. 1 , a metal frame 1 is usually provided in a liquid crystal display to fix a liquid crystal display module (not shown in the figure), and the metal frame 1 includes an inner ring portion 11 and an upright portion 12 . The inner ring portion 11 and the upright portion 12 are vertically connected to each other. There are usually some electrical module boards 2 (such as converter (Inverter) module boards) additionally assembled on the metal frame 1 .

The electrical module board 2 includes a circuit board 21 and a connection board 22 . There are multiple electronic components on the circuit board 21 to realize the functions of specific electronic circuits. In the prior art, a layer of double-sided adhesive 23 is provided on the bottom surface of the connection board 22 . Using the double-sided tape 23 , the connection plate 22 can be fixed to the inner ring portion 11 of the metal frame 1 . Therefore, the electrical module board 2 can be fixed to the metal frame 1 .

The grounding (Grounding) requirement of the electrical module board 2 generally needs to be indirectly realized by relying on the metal frame 1. However, the existing fixing method using double-sided adhesive tape 23 is because the connecting plate 22 of the electrical module board 2 is separated by the double-sided adhesive tape. Glue 23 is connected to the metal frame 1, and the electrical module board 2 cannot be electrically connected to the metal frame 1, so the grounding characteristic of the electrical module board 2 is not good, which will lead to poor electrical characteristics of the electrical module board 2, resulting in unstable circuit operation .

In addition, since the electrical module board 2 and the metal frame 1 are fixedly connected by the double-sided adhesive tape 23 , the electrical module board 2 is directly attached to the metal frame 1 . When another electrical module board is to be replaced or the electrical module board 2 is to be removed, it will be very difficult to decompose the assembly structure, which will cause difficulties in construction; and the electrical module board 2 or the metal frame 1 may be damaged.

Therefore, it is necessary to provide an innovative and progressive assembly structure of the electrical module board and the metal frame to solve the above-mentioned problems.

Contents of the invention

The main purpose of the present invention is to provide a metal frame and electrical module board assembly of a liquid crystal display, wherein the metal frame includes an inner ring part and an upright part, the inner ring part and the upright part are vertically connected to each other, and the inner ring part has multiple A positioning hole is formed on one side of the metal frame. The electrical module board includes: a circuit board and at least one vertical side board. The upright side board is arranged on one side of the circuit board, and the upright side board has a plurality of clasps, which are formed in the relative positions of the positioning holes of the inner ring, and each clasp is suitable for being accommodated in each positioning hole, so that The electrical module board is secured to the metal frame.

Therefore, by using the electrical module board and the metal frame of the present invention, the electrical module board can be easily assembled to the metal frame, and the grounding circuit of the electrical module board can be electrically connected to the metal frame, therefore, the grounding property of the electrical module board will be good , making the circuit operation stable.

In addition, because the hooks of the electrical module board are accommodated in the positioning holes of the metal frame to form a fastening structure, it is very convenient to disassemble without damaging the electrical module board or the metal frame at all, and the reusability is quite high, and the maintenance is relatively low. And the assembly cost is thus greatly reduced.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing electrical module board and metal frame;

2 is a three-dimensional exploded view of an electrical module board and a metal frame according to Embodiment 1 of the present invention;

3 is a schematic cross-sectional view of the fastening connection between the electrical module board and the metal frame according to Embodiment 1 of the present invention;

Fig. 4 is another perspective exploded view of the electrical module board and the metal frame in Embodiment 1 of the present invention;

FIG. 5 is a three-dimensional exploded view of the electrical module board and the metal frame according to the second embodiment of the present invention.

Detailed ways

FIG. 2 is a first embodiment of the metal frame 3 and the electrical module board 4 of the liquid crystal display of the present invention, wherein the metal frame 3 includes an inner ring portion 31 and an upright portion 32 . The inner ring part 31 and the upright part 32 are vertically connected to each other. The inner ring part 31 has two positioning holes 311 , 312 passing through the inner ring part 31 . The two positioning holes 311 and 312 are disposed adjacent to the intersection of the inner ring portion 31 and the upright portion 32 of the metal frame 3 , and on one side of the metal frame 3 .

The electrical module board 4 includes: a circuit board 41 and two upright side boards 42 , 43 . The two upright side panels 42 , 43 are vertically arranged on one side of the circuit board 41 and extend from two ends of the circuit board 41 toward the center. The two upright side panels 42 , 43 each have a clasp 421 , 431 , which respectively extend upward from a top end of the two upright side panels 42 , 43 and turn downward to form a sheet. The two clasps 421, 431 are arranged at the relative positions of the two positioning holes 311, 312 of the metal frame 3, so that the two clasps 421, 431 are suitable for being accommodated in the two positioning holes 311, 312 respectively, so that the electrical module board 4 and the metal Frame 3 snap-fit connection.

The two clasps 421 , 431 respectively have a protruding area 422 , 432 . The protruding areas 422 , 432 are laterally formed on a top of the two hooks 421 , 431 . As shown in FIG. 3 , the buckle 421 and the positioning hole 311 are taken as an example for illustration. After the clasp 421 is accommodated in the positioning hole 311 , the protruding area 422 is just locked under the inner ring portion 31 . It can be used to prevent the buckle 421 from slipping out of the positioning hole 311 and maintain a uniform horizontal plane. Therefore, the stable connection between the metal frame 3 and the electrical module board 4 can be further ensured.

As shown in FIG. 2 , the two clasps 421 , 431 respectively have a folded area 423 , 433 . The folded areas 423 and 433 are respectively formed by bending the bottoms of the two clasps 421 and 431 upwards. As shown in FIG. 4 , the upright portion 32 of the metal frame 3 has two grooves 321 , 322 . The two grooves 321 , 322 are disposed at opposite positions of the folded areas 423 , 433 of the two clasps 421 , 431 , so that the two folded areas 423 , 433 are suitable for being received in the two grooves 321 , 322 . As shown in FIG. 3 , after the clasp 421 is accommodated in the positioning hole 311 , the folded area 423 can just be accommodated in the groove 321 (indicated by a dotted line). Utilize the upper and lower parts of the protruding area 422 and the folded area 423 to be clamped on the inner ring portion 31 and the upright portion 32 of the metal frame 3, so that the snap-fit connection between the metal frame 3 and the electrical module board 4 is more stable and will not be easily loose.

The two upright side panels 42 , 43 of the electrical module board 4 are generally made of metal, and are electrically connected to the ground circuit of the circuit board 41 . After the electrical module board 4 is fastened and connected to the metal frame 3 , the two upright side panels 42 , 43 can form an electrical connection with the metal frame 3 . Therefore, the electrical connection via the two upright side plates 42 , 43 and the metal frame 3 provides good grounding properties of the circuit board 41 on the electrical module board 4 , making the operation of the electronic circuit on the circuit board 41 stable.

If you want to disassemble the fastening connection between the electrical module board 4 and the metal frame 3, you only need to push the folded areas 423, 433 away from the grooves 321, 322, and then move the electrical module board 4 upwards so that the buckles 421, 431 are aligned with the positioning holes. 311, 312 can be separated. The assembly and disassembly of the electrical module board 4 and the metal frame 3 are quite easy, therefore, the electrical module board 4 can be replaced repeatedly as required without damaging the electrical module board 4 or the metal frame 3 .

FIG. 5 is a second embodiment of the metal frame 5 and the electrical module board 6 of the liquid crystal display of the present invention. The structure of the metal frame 5 is the same as that of the metal frame 3 in the first embodiment. The electrical module board 6 includes: a circuit board 61 and a continuous upright side board 62 . The upright side panel 62 is uprightly disposed on one side of the circuit board 61 , and an inflection plane 623 is disposed approximately at the center of the upright side panel 62 . Compared with the two upright side panels 42 and 43 of the first embodiment of the present invention, the upright side panel 62 of the second embodiment and the addition of an inflection plane 623 at about the center of the upright side panel 62 can enhance the overall structural strength. When the electronic circuits on the circuit board 61 are more and heavier, this structure can be used to enhance the structural strength of the assembly.

The upright side panel 62 has two hooks 621 , 622 , which also extend upward from a top end of the upright side panel 62 , and turn downward to form a sheet. The two clasps 621 , 622 are also adapted to be accommodated in the two positioning holes 511 , 512 of the metal frame 5 , so that the electrical module board 6 and the metal frame 5 are fastened and connected.

The above-mentioned embodiments are only used to illustrate the principle of the present invention and its functions and effects, but not to limit the present invention. Therefore, those skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit of the present invention.

Claims (5)

1. the metal frame of a LCD and electric module board assembly, it is characterized in that: metal frame comprises an internal ring portion and an erection part, internal ring portion roughly is vertically with this erection part and is connected, and internal ring portion has a plurality of pilot holes that are formed at a side of metal frame, and this electric module board comprises:

One circuit board; And

At least one upstanding side side plate is arranged at a side of circuit board, and this upstanding side side plate has a plurality of clasps of the relative position that is formed at each pilot hole.

2. the metal frame of LCD as claimed in claim 1 and electric module board assembly, it is characterized in that: internal ring portion includes two pilot holes, the upstanding side side plate has two clasps, and wherein electric module board comprises that two two ends by circuit board extend the upstanding side side plate that forms to central authorities; Each clasp is located at respectively on each upstanding side side plate.

3. the metal frame of LCD as claimed in claim 1 or 2 and electric module board assembly is characterized in that: the shape of each clasp be by a top of corresponding upright side board extend, the sheet that forms downwards of turnover again.

4. the metal frame of LCD as claimed in claim 3 and electric module board assembly, it is characterized in that: each clasp also has one and can be limited under the internal ring portion and prevent the horizontal raised areas that each clasp is deviate from from each pilot hole, and it is formed at a top area of each clasp.

5. the metal frame of LCD as claimed in claim 3 and electric module board assembly, it is characterized in that: each clasp also has a bottom, and this bottom reflexed upwards is formed with a reflexed zone; The erection part of this metal frame is respectively arranged with a groove at the relative position in the reflexed zone of each clasp, and this reflexed zone is contained in this groove.

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