JP2545778B2 - CRT mounting structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mounting structure of a CRT such as a television receiver.

[Outline of Invention]

This invention relates to a CRT mounting structure for mounting a CRT on a housing via a bracket, in which a base portion for mounting the bracket on the housing, a boss portion that can be bent even after the CRT is screwed, and a boss portion collide with each other. It is configured with a matching stopper part, and when the CRT is attached to the housing using this bracket,
(EN) A mounting structure for preventing a gap from being generated between a housing and a CRT due to an impact such as a drop.

[Conventional technology]

A CRT (cathode ray tube) such as a television receiver is usually attached with a bolt, a nut, or a tapping screw through a bracket attached to a casing (bezel).

FIG. 4 (a) is a perspective view showing a conventional bracket, and FIG. 4 (b) is a sectional view taken along line XX of FIG. 4 (a).

The bracket 11 of FIG. 4 is provided with several through holes 11A for attaching to the housing and through holes 11B for inserting bolts for fastening the CRT.

In the conventional CRT mounting structure, as shown in FIG. 4 (b), the bolt 12 is inserted into the through hole 11B so as not to rotate in advance in the bracket 11 configured as described above. Then, as shown in FIG. 5, screws (or tapping screws) 14 inserted into the through holes 11A are screwed into the housing 13 at the four corners near the opening 13A of the housing 13 to attach the bracket 11. The bolt 12 is inserted into the through hole 15B of the mounting portion 15A of the CRT 15, and the nut 16 is screwed onto the bolt 12 to fasten the CRT 15 to the housing 13.

[Problems to be solved by the invention]

However, in the television receiver in which the CRT 15 is attached to the housing 13 via the bracket 11 as described above, when an impact due to a drop during transportation is applied to the fastening portion between the bracket 11 and the CRT 15, the television receiver of FIG. As described above, in the first stage where the impact value is small, the impact is absorbed by the lower portion of the housing 13 having high rigidity S being slightly bent.

However, when the impact value is large, the process proceeds from the first stage to the second stage, and at this second stage, the bracket 11 and
Bracket 11 to absorb shock at the fastening part of CRT15
A deviation in the direction of arrow A occurred at the fastening part between CRT15 and CRT15
The state shown in FIG. At this time, the upper bracket 11
Between the CRT15 and CRT15 and the lower bracket 11 and CRT
The difference between the fastening parts of 15 is different, and in the normal case, the upper and lower brackets where the CRT15 is fastened after the impact is applied more than the distance between the upper and lower brackets 11 which fastened the CRT15 before the impact is applied. Since the space between 11 is shortened, the upper and lower brackets 11 exert a force that shrinks the casing 13 inward, so that a gap is generated between the casing 13 and the CRT 15, which spoils the aesthetics and occurs. If the gap is large, there is a problem that the CRT15 must be reattached.

The present invention has been made to alleviate the above problems, and by reducing the shearing force acting on the fastening portion between the bracket and the CRT, a gap is generated between the housing and the CRT due to impact or the like. C that prevented as much as possible
It provides an RT mounting structure.

[Means for solving problems]

The mounting structure of the CRT of the present invention comprises a base portion for fastening the bracket to the housing, a boss portion that can be bent while the CRT is attached, and a stopper portion where the bent boss portion abuts, The CRT is attached to the housing at a predetermined position via this bracket.

[Action]

Since the mounting structure of the CRT of the present invention comprises the bracket for mounting the CRT on the housing, the base portion, the boss portion, and the stopper portion, when the impact such as a drop is applied and the impact is small, the boss portion is By bending, the shock can be absorbed.

Further, when the impact is large, a displacement such that the mounting interval of the bracket is widened occurs at the fastening portion of the upper boss portion and the CRT, and it is possible to prevent almost no gap after the impact is eliminated.

〔Example〕

1 (a) is a perspective view showing a bracket used in one embodiment of the present invention, and FIG. 1 (b) is FIG. 1 (a).
2 shows a cross section taken along line XX of FIG.

In FIG. 1, reference numeral 1 denotes a bracket, which is composed of a base portion 2, a boss portion 3, and a stopper portion 4 concentric with the boss portion 3.

The base portion 2 is provided with several through holes 2A for attaching to the housing, and an arc-shaped recess 5 formed on the side surface of the base portion 2 stops the movement of the CRT when it collides. Doubles as

The boss portion 3 is provided with a through hole 3A through which a bolt for attaching a CRT is inserted, and is provided upright so that it can be slightly bent with respect to the base portion 2.

The stopper portion 4 is provided on the CRT side of the base portion 2,
When the boss portion 3 bends, it abuts.

The CRT mounting structure according to the present invention includes a bracket 1 configured as described above, a bolt 1 as shown in FIG.
With the 12 inserted into the through hole 2A of the base portion 2 so as not to rotate, the screws 14 are provided at the four corners near the opening 13A of the housing 13 at predetermined intervals L1 as will be described later, as in the conventional case. Install.

Then, the bolt 12 is inserted into the through hole 15B of the mounting portion 15A of the CRT 15, the nut 16 is screwed onto the bolt 12, and the CRT 15 is fastened to the housing 13 as shown in FIG.

Next, a state in which the television receiver is impacted by being dropped or the like will be described step by step in FIGS. 3 (a) to 3 (d).

First, as shown in Fig. 3 (a), CRT15 and bracket 1
When the TV receiver falls on the floor etc. with the CRT attached so that the space (gap) on the side of the is L1, the CRT15 collides with the lower base part 2 in the first stage where the impact value is small. It falls down as shown in FIG. 3 (b) until just before, but at this stage, the boss 3 bends without hitting the stopper 4 due to the gap L2 between the upper boss 3 and the stopper 4, and the impact is generated. Is relaxed and bolted CRT15
The shearing force acting on the fastening portion between the mounting portion 15A for mounting and the boss portion 3 becomes small, and the mounting portion 1 of the boss portion 3 and the CRT 15
No deviation occurs between 5A, and the upper boss portion 3 is in a state of not hitting the stopper portion 4 either.

In the second stage where the impact value increases from this state, the base portion 2 of the lower bracket is pushed downward, so that the lower side of the housing 13 flexes slightly to absorb the impact, and A slight shearing force sometimes acts between the lower bracket 1 and the housing 13, but in any case, when the CRT 15 tries to move further downward, the upper boss portion 3 collides with the stopper portion 4, The upper stopper portion bears the impact, resulting in the state as shown in FIG. 3 (c).

Then, at this stage, the lower bracket 1 that receives an instantaneous stress can return to its original position.

Further, in the third stage where the impact value is maximum, the impact on the lower bracket 1 is further increased, so that
13 and the lower bracket 1 are distorted, and the upper boss portion 3 and the fastening portion of the CRT 15 are also displaced in the arrow direction B.

However, since the lower side of the CRT is supported by the base portion 2 of the lower bracket, the shearing force given by the impact at this stage mainly acts on the fastening portion of the boss portion 3 of the upper bracket, The displacement of the upper fastening portion is larger than the displacement of the lower fastening portion.

Therefore, the upper side where CRT15 is fastened before impact is applied,
The fastening distance between the upper and lower brackets 1 that have been restored after the impact is applied is longer than the distance between the lower brackets 1.

At the fourth stage where the impact is removed, the instantaneous displacement generated between the upper and lower brackets 1 and the housing 13 is almost restored, so that the upper and lower brackets 1 are shown in FIG. 3 (a). Although it returns to a state close to the above state, since the interval between the upper and lower brackets 1 to which the CRT15 is fixed is longer than the initial state as described above, the upper and lower brackets 1
Exerts a force that spreads the housing 13 outward, and as a result, the contact portion (the bezel) between the housing 13 and the CRT has a shape in which the housing 13 and the CRT are folded inward, and between the housing 13 and the CRT 15. No gaps will occur.

[Effects of the Invention] As described above, the CRT mounting structure of the present invention is
It is composed of a base part that fastens the bracket to the housing, a boss part that can bend when an impact is applied, and a stopper part that the boss part abuts. Since the CRT is fixed to the housing by attaching the bracket to the housing so that it is almost the same as the side surface or slightly larger than the side surface, if the impact such as a drop is applied and the impact is small, the boss should be The shock can be absorbed by the bending of the portion.

Also, when the impact is large, first, the base part collides with the CRT to prevent the CRT from moving, and if further impact is applied from this point, the mounting interval is mainly at one boss part and the fastening part of the CRT. There is an advantage that it is possible to mitigate the occurrence of a gap between the housing and the CRT after the restoration because the deviation that spreads occurs.

[Brief description of drawings]

1 (a) and 1 (b) are perspective views showing a bracket used in an embodiment of the present invention, a sectional view taken along line XX of FIG. 1 (a), and FIG. 2 is a sectional view of FIG. CRT with bracket
Fig. 3 (a), which is a rear view showing the main part of the housing attached to the housing.
~ (D) is an explanatory view when a shock is applied, Figs. 4 (a) and 4 (b) are perspective views showing a conventional bracket, and a sectional view taken along line XX of Fig. 4 (a). FIG. 5 is a rear view showing a main part in which the CRT is attached to the housing by using the bracket of FIG. 4, and FIGS. 6 (a) and 6 (b) are explanatory views. In the figure, 1 is a bracket, 2 is a base portion, 3 is a boss portion, 4
Is a stopper part, 12 is a bolt, 13 is a housing, 13A is a mounting part, 1
4 is a screw, 15 is a CRT, and 16 is a nut.

Claims (1)

(57) [Claims] 1. A base portion which is attached to four corners of a CRT at predetermined intervals, a boss portion which is upright in a substantially central portion of the base portion and on which the attachment portion of the CRT is screwed, and the boss portion A bracket for CRT mounting is configured with a stopper that abuts when it bends to the CRT side, and the spacing between the boss and the stopper is approximately the same as when mounting the bracket on the side of the CRT. ,
Or it is set to be slightly larger
CRT mounting structure.