KR950003854Y1 - Pcb holder fixing apparatus for projection tv - Google Patents

Abstract

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Description

PCB holder fixing device for projection TV

1 is an exploded perspective view of the PEB holder fixing device according to the present invention.

2 is a side view of the PCB holder.

3 is a plan view of the assembly of the present fixing device, the close contact state of the fixing before the third (a), the fixed state and the third (b).

* Explanation of symbols for main parts of the drawings

1: PCB holder 2: Groove

3: bent rib 4: stone chunk

5: Reinforcing rib 6: Elastic hook

10: back cover 11: through locking portion

12: vertical cutting unit 13: horizontal cutting unit

14: engaging hole 20: PCB (printed circuit board)

The present invention relates to a PCB holder fixing device for fixing a PCB holder to the back cover (Cover ­ Back) behind the projection TV (Projection TV, hereinafter PTV).

In the PTV constituting a large screen using three CRTs and reflective mirrors, a PCB holder in which elastic hooks protruding from both ends of the PCB holder in each longitudinal direction are elastically fastened to the locking holes of the back cover and then fixed by screws. Fixed devices are known.

However, such a conventional fixing device has a relatively thin and long elastic hook that protrudes outwardly through the locking hole of the back cover to ensure elasticity, and thus easily protrudes from the protrusion during transportation or repair. There is a high possibility that the PCB holder will be released. It also requires extra screw work.

Accordingly, an object of the present invention is to provide a PCB holder fixing device that can be easily fixed and detached without a separate screw by using a bending rib or the like.

Another object of the present invention is to reduce the possibility of breakage due to external protrusion by using a bending rib that can be manufactured relatively robust regardless of the aforementioned elastic guarantee.

In order to achieve the above object, the present invention provides a PCB holder fixing device for fixing a PCB holder, in which a groove for supporting one end of the PCB is formed in a vertical direction, to a back cover of the rear side of the projection TV, wherein the vertical cutout and the horizontal cutout are provided. A back cover having an additional L-shaped continuous cut through portion and a locking hole for separation, a bent rib that is inserted into the vertical cut portion of the through locking portion and fitted into a horizontal cut portion, and a locking hole of the back cover. It provides a PCB holder fixing device comprising a PCB holder having an elastic hook that is elastically locked to the.

In addition, the PCB holder is preferably provided adjacent to the bent rib further comprises a protrusion rib capable of closing the vertical cut portion of the through-locking portion. In order to firmly fix the relatively long PCB holder, the through-locking portion of the back cover and the bending ribs and the protruding ribs of the PCB holder are provided in pairs, and it is advantageous to be symmetrically formed at both upper and lower ends of the PCB holder. In addition, the elastic hook is preferably provided with a latching jaw that is elastically caught in the engaging hole of the back cover to prevent the departure in the opposite direction to the horizontal introduction.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a PCB holder fixing device according to the present invention, Figure 2 is a side view of the PCB holder. As shown in FIGS. 1 and 2, the PCB holder fixing device according to the present invention includes a back cover 10 having a through locking portion 11 and a locking hole 14 and the above-described through locking portion 11. And a PCB holder 1 in which the engaging ribs 3 and the elastic hooks 6, which are mutually associated with the engaging holes 14, are integrally formed.

In the present embodiment, the through-locking portion 11 and the bending ribs 3 and the protruding ribs 4 and the reinforcing ribs 5 to be described later are symmetrically formed in the upper and lower end regions of the PCB holder 1, respectively. Since the functions are completely identical to each other, the following description will not be repeated.

The through-locking portion 11 of the back cover 10 includes a vertical cut portion 12 and a horizontal cut portion 13 continuously cut in an L shape. On the front surface of the PCB holder 1, as shown in the conventional PCB holder 1, a groove 2 for receiving one end of the PCB 20 is formed long in the vertical direction, and has a shape as shown. A reinforcing rib 5 wraps around the groove 2 of the PCB holder 1 and reinforces it horizontally.

The bending ribs 3 extend from the upper and lower end regions of the PCB holder 1 by the appropriate length in the direction of the back cover 10, preferably by the thickness of the back cover 10, with the extension part 3 'protrudingly extended. It consists of a bent portion 3 "bent vertically in the extension portion 3 '. At this time, the plate size of the bent portion 3" is limited to pass through the above-described vertical cutout portion 12, and the extension portion The upper and lower widths of 3 'are also limited so that the upper and lower widths of the 3' can be fixed in almost the same as the upper and lower widths of the horizontal cutout portion 13. In addition, when the bending rib 3 moves in the horizontal cutout 13 direction in the PCB holder 1 through the aforementioned vertical cutout 12, the vertical cutout 12 is opened and foreign foreign matters are opened. Since the back and the like easily enter the electronic device, the protruding ribs 4 capable of closing the vertical cutout portions 12 are appropriately spaced apart from the bent ribs 3.

Meanwhile, an elastic hook is installed such that the bending rib 3 of the PCB holder 1 is horizontally introduced into the horizontal cutout portion 13 of the back cover 10 and at the same time is fixed to the locking hole 14 of the back cover 10. 6 is provided with an inclined part 6 'and a latching jaw 6 ", and protrudes in parallel with the plate surface of the back cover 10 in the longitudinal middle part of the PCB holder 1. As shown in FIG.

FIG. 3 is an assembly plan view of the present fixing device having the above configuration, and FIG. 3 (a) shows a close contact state before fixation and FIG. 3 (b) shows a fixed state. As can be seen in FIG. 2 (a), to fix the PCB holder 1 to the back cover 10, first, the bent portion 3 " of the bent rib 3 passing through the vertical cutout portion 12 " ), The PCB holder 1 is properly horizontally moved so that the extension portions 3 'and 3 "of the bending ribs 3 are fitted into the horizontal cutouts 13 with the protrusion protruded out of the back cover 10. Let's do it. By this horizontal movement, it is moved toward the engaging hole 14 of the back cover 10 in a state of being bent by the elastic hook 6 molded into the PCB holder 1, and finally the engaging jaw 6 "is engaged with the engaging hole ( 14) Inserted and fixed

Therefore, the front and back and vertical movement of the PCB holder 1 with respect to the back cover 10 is prevented by the interaction between the horizontal cutout portion 13 and the bending rib 3, and the locking hole 14 and the elastic hook The PCB holder 1 is firmly fixed to the back cover 10 by the separation of the PCB holder 1 against the back cover 10 in the opposite direction of horizontal introduction by the interaction of (6).

In this fixing device, the elastic hook 6 is completely received in the locking hole 14 and does not protrude rearward of the back cover 10. In addition, although the bent portion 3 ″ of the bent rib 3 protrudes from the rear surface of the back cover 10, it has a thickness that has sufficient impact resistance because it is not related to the limitation (elastic guarantee) of the conventional fixing device mentioned at the outset. Extensions 3 'and cutouts 3 "may be formed. If necessary, the corners of the protruding bent portion 3 ″ may be rounded or inclined to more effectively respond to external shocks.

On the other hand, when the PCB holder 1 is to be separated from the back cover 10, the locking jaw 6 ″ of the elastic hook 6 is deviated from the corresponding edge of the locking hole 14 of the back cover 10. Simultaneously pushing from the rear, the bending ribs 3 are horizontally moved in the opposite direction of introduction to move away from the horizontal cutout 13 and then pulled forward through the vertical cutout 12.

As described above, the present invention provides a PCB holder fixing device for a PTV that can be easily fixed and detached without a separate screw and has sufficient impact resistance.

Claims (4)

In the PCB holder fixing device for fixing the PCVB holder formed in the vertical direction with the groove supporting one end of the PCB to the back cover behind the projection TV, the through-locking portion in which the vertical cutting portion and the horizontal cutting portion are continuously cut in an L shape. A back cover having a stopper for preventing separation; And a PCB holder including a bending rib that is penetrated into the vertical cutout portion of the through-locking portion and fitted into a horizontal cutout portion, and an elastic hook elastically fixed to the locking hole of the back cover. PCB holder fixing device for projection TV. The apparatus of claim 1, wherein the PCB holder further includes a protruding rib installed adjacent to the bending rib to close the vertical cutout of the through-locking portion. 3. The apparatus of claim 2, wherein the through-locking portion of the back cup and the bending ribs and the protruding ribs of the PCB holder are each paired. The apparatus of claim 1, wherein the elastic hook has a locking jaw that is elastically hooked to the locking hole of the back cover to prevent the separation of the elastic hook in the opposite direction to the horizontal introduction.