JP2573202Y2 - Cabinet for television receiver integrated with basil - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a television receiver cabinet,
In particular, the present invention relates to a cabinet for a television receiver integrated with a bezel, which is integrally provided with a bezel.

[Outline of the invention]

In the case of a bezel integrated cabinet in which normal resin without foaming material is injected into the mold, and then the resin containing foaming material is injected with a slight delay and molded, a large amount of resin is injected from a single gate. Will do. For this reason, swirl marks generated in the gate portion are strongly generated. The strength of this mark may not be concealed by ordinary painting. Therefore, a cabinet-integrated bezel is provided with a strong gate at the joint with the rear cover so that the terminal of the resin flow is the bottom surface of the cabinet.

[Conventional technology]

In order to mold a cabinet having high strength by thick molding, so-called 2K molding has been used. 2K molding is a type of low-foaming molding, in which a resin that does not contain a foaming material used as a presentation surface is injected into a mold, and a resin that contains a foaming material is injected into the mold with a slight delay.
Since the resin containing the foam material injected later flows near the center of the mold cabinet, the first resin for appearance is applied to the outer portion corresponding to the outer surface of the cabinet, and the foam material is applied to the inside. Containing resin is injected. Such a molding has the same appearance as the general molding and enables the same thick molding as the low foam molding. When the cabinet of the television receiver is molded by such molding, its strength is increased.

[Problems to be solved by the invention]

The disadvantage of such 2K molding is that it is difficult to control the distribution of the two types of materials at the flow end of the resin, and thus a one-point gate method is generally employed. Then, a swirl mark appears on the weld constituting the flow end of the resin. Therefore, when molding a cabinet by 2K molding, it is necessary to use the weld at the flow end as the bottom surface.
For this reason, it is necessary to provide a gate for injecting resin on the top plate of the cabinet. In cabinets that are separate from the basil, gates can be provided on the inside of the cabinet, but when the bezel is molded integrally with the cabinet, it is difficult to provide such a firmness. This eliminates the proper position of the gate.

The present invention has been made in view of such a problem, and in addition to forming the weld by 2K molding so as to be located on the bottom surface, the position of the trace of the gate is not visible from the outside in an assembled state. It is an object of the present invention to provide a bezel integrated cabinet.

[Means for solving the problem]

The present invention is composed of a resin that does not include a foaming material that has been previously injected, and includes an outer layer that forms an outer surface including a presentation surface, and a resin that includes a foaming material that is subsequently injected, and is wrapped by the outer layer. And an inner layer positioned on the inside of the cabinet, a bezel-integrated television receiver cabinet formed integrally with a bezel on the front end side of the cabinet, provided on the rear peripheral portion of the cabinet, The outer surface has a step to which a rear cover is joined, and a trace of a gate for injecting two kinds of resins for forming the inner layer and the outer layer is located inside a top plate portion of the step. The present invention relates to a cabinet for a television receiver integrated with a bezel.

[Action]

Therefore, foam-free resin is first injected through the gate corresponding to the trace located inside the top plate portion of the step, which is the peripheral portion on the rear side of the cabinet and is joined to the outer surface by the rear cover, A resin containing a foaming material is injected from the mold, and the resin is fluidized and solidified so as to be filled in a mold cabinet, thereby forming a bezel integrated television receiver cabinet. This cabinet is formed so that the outer surface including its appearance surface is made of foam-free resin, and the resin containing foam injected later is wrapped by the outer layer made of the resin injected earlier. Will be. Since the trace of the gate is located inside the stepped top plate provided on the rear peripheral portion of the cabinet, the swirl mark at the flow end of the resin is located on the bottom surface of the cabinet and is inconspicuous. Also, traces of the gate located inside the top plate portion of the step on the rear edge of the cabinet are hidden by the rear cover that is mounted later.

〔Example〕

FIG. 1 shows a bezel integrated cabinet 10 according to one embodiment of the present invention, and this cabinet 10 is formed of high-impact polystyrene resin by so-called 2K molding described later. A bezel portion 11 is integrally formed on the front end side of the cabinet 10. The bezel portion 11 is a portion constituting a screen frame of a CRT (cathode ray tube). Further, a step portion 12 is formed at a peripheral portion on the rear side of the cabinet 10. A rear cover is connected to the outer surface of the step portion 12. When the cabinet 10 is detached from the mold, the sprue 13 and the runner 14 constituting the resin injection portion are connected via the gate portion 15. These parts 13 ~
15 will be cut off later and removed, and the 15 portion will form a trace of the gate.

FIG. 2 shows a molding apparatus for molding such a cabinet 10, in which a pair of dies 18 and 19 combined with each other are used. These molds
The cabinets 20 for forming the cabinet 10 are formed by 18 and 19. And cabinet 20 is a gate
It communicates with the resin passage 22 via 21. The base 24 of the firing cylinder 23 is connected to the inlet of the resin passage 22. In the injection cylinder 23, a first plunger 25 and a second plunger 26 are provided.
And are stored. Injection cylinder 23
The first injection unit 27 is connected to the upper side, and the second injection unit 28 is connected to the lower side.
These injection units 27 and 28 inject a first resin 31 and a second resin 32, respectively.

Next, cabinet 10 is formed by such a molding apparatus.
The operation of molding by 2K molding will be described. As shown in FIG. 3, the first plunger 25 disposed in the injection cylinder 23 is retracted. Then, the first resin from the first injection unit 27 through the gap between the plunger 25 and the cylinder 23,
That is, the resin 31 forming the appearance surface is injected. Then, slightly later, the second plunger 26 is retracted as shown in FIG. 4, and the second resin, that is, the resin 32 containing the foaming material, is passed through the second injection unit 28 to the plunger.
The second resin 32 injected from the gap between 25 and 26 flows near the center of the gap between the molds 18 and 19, whereas the portion facing the surface of the cabinet 20 first Injected first resin 31
Will be injected. Therefore, in the cabinet 10 formed by such 2K molding, the first resin 31 constituting the appearance surface is present on the outer surface, and the foamed resin 32 is injected inside. Accordingly, such a cabinet 10 has the same appearance as that of a molded product by general molding, enables thick molding as low as foam molding, has high strength, and has a sink due to the pressure of the foamed resin 32. Is reduced.

In addition, since the gate 21 for injecting the two kinds of resins 31 and 32 into the cavity 20 is located at the central portion on the rear side of the top plate portion of the cabinet 10, the two kinds of resins 31 and 32 are provided.
The weld constituting the flow end is located at the bottom of the cabinet 10. Since the bottom surface is difficult to be seen from the outside, there is no particular problem even if the swirl mark appears strongly. Further, since the rear cover is combined with the stepped portion 12 above the gate 21, the gate 21 is not noticeable from behind. That is, the bezel integrated cabinet 10 can be formed by 2K molding without providing a gate in the appearance portion, and the cabinet 10 can be commercialized by ordinary secondary processing.

[Effect of the invention]

As described above, the present invention has a step provided on the outer peripheral portion of the rear side of the cabinet and having an outer surface to which the rear cover is joined, and injects two kinds of resins for forming the inner layer and the outer layer, respectively. The trace of the gate to be positioned is located inside the top plate portion of the step.

Therefore, the flow ends of the above two types of resins, that is, the welds are located on the bottom surface of the cabinet which is farthest from the gate, and even if swirl marks appear strongly, the swirl marks must be located on the bottom surface of the cabinet. This makes it difficult to see from the outside, and the swirl mark does not impair the commercial value of the television receiver cabinet integrated with the bezel. Also, since the trace of the gate is located inside the top of the step on the rear edge of the cabinet, if the rear cover is joined to the outer surface of the step from the rear, the trace of the gate will be completely Become hidden.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a cabinet of a television receiver according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a cabinet molding apparatus, and FIG. FIG. 4 is a longitudinal sectional view showing the operation of injection, and FIG. 4 is a longitudinal sectional view showing the operation of injection of the second resin. The names of the main parts in the drawings are as follows. 10 Cabinet 11 Bezel 12 Step 21 Gate 31 First resin (resin forming appearance surface) 32 Second resin (resin containing foam material)

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-160885 (JP, A) JP-A-63-4116 (JP, A) Fully open 1987-147970 (JP, U) Really open 15029 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. An outer layer comprising an outer surface including a form surface, which is made of a resin which does not contain a foaming material injected earlier, and a resin which contains a foaming material injected later,
An inner layer wrapped by the outer layer and positioned inside, and a bezel-integrated television receiver cabinet formed integrally with a bezel on the front end side of the cabinet, wherein a rear edge of the cabinet is provided. And a step of connecting a rear cover to an outer surface of the step, and a trace of a gate for injecting two kinds of resins for forming the inner layer and the outer layer is formed on a top plate portion of the step. A cabinet for a television receiver integrated with a basil, characterized by being located inside the cabinet.