JP3467320B2 - Ceiling speaker mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting a speaker in a ceiling hole provided in a ceiling, and more particularly to a panel mounting structure for covering the ceiling hole.

[0002]

2. Description of the Related Art Conventionally, as a device for mounting a speaker on a ceiling, for example, as shown in FIG. 7, a ceiling box 4 is provided in a ceiling 2 and a speaker box is provided in the ceiling 2 so as to correspond to the ceiling hole 4. 6, a speaker 10 is provided on a panel 8 covering the ceiling hole 4, springs 12, 12 each having one end coupled to the panel 8 are extended, and the other end is coupled to the upper wall of the speaker box 6. There is one in which the ceiling holes 4 are covered with the panel 8 by compressing the springs 12, 12 so as to return to the original lengths as shown by arrows.

Further, as shown in FIG. 8, a pedestal 14 is provided in the ceiling 2 so as to cover the ceiling hole 4, and the pedestal 14 is located on the back surface side of an opening 16 formed so as to correspond to the ceiling hole 4. The speaker 10 is provided so that both ends of the spring 18 provided on the back surface side of the pedestal 14 are extended, pulled out from the ceiling hole 4 and coupled to the panel 8, respectively, and the spring 16 has the original length as shown by an arrow. There is also one in which the ceiling hole 4 is covered by the panel 8 by compressing the panel 8 so that the panel 8 is compressed.

[0004]

However, in any of the structures shown in FIGS. 7 and 8, the panel 8 is made by utilizing the restoring force of the spring 12, 12 or 16 from the state in which the spring 12, 12 or 16 is pulled. Is attached to the ceiling hole 4. Therefore, the springs 12, 12 or 16 are pulled, but at that time, the springs 12, 12 or 16 are likely to be plastically deformed, the panel 8 and the ceiling 2 do not come into close contact with each other, and when the loudspeaker 10 expands the sound, There were cases where chattering and appearance defects occurred. When such a phenomenon occurs, the spring 12, 12 or 16 is replaced only, and there is no good countermeasure.

[0005]

According to the first aspect of the present invention, a speaker is provided above a ceiling hole formed in a ceiling so as to correspond to the ceiling hole, and is provided outside the speaker. A plurality of folding members, a panel for covering the ceiling hole on the lower surface side of the ceiling, and one end coupled to this panel,
There are provided a plurality of springs that enter the ceiling hole, are folded back by the folding tool toward the ceiling hole on the side opposite to the speaker, and the other end is fixed near the ceiling.

Further, according to the second aspect of the present invention, a speaker provided corresponding to the ceiling hole is provided above a ceiling hole formed in the ceiling, and is provided outside the speaker in the ceiling. , The upper end of the speaker, which is higher than the vicinity of the speaker, and is opposite to the speaker.
A plurality of folding tools that are folded back to the ceiling side, a panel that covers the ceiling hole on the lower surface side of the ceiling, and one end is attached to the panel, and along the folding tools, to the ceiling hole. And a plurality of springs, the other end of which is fixed near the ceiling. In the second invention, the folding tool may have a groove into which the spring is inserted. Further, in the first and second inventions, it is desirable that each spring has a length slightly longer than the path of the spring when the spring is not pulled.

[0007]

According to the first and second aspects of the present invention, the spring for covering the ceiling hole in the panel is folded back by the folding tool. Therefore, the length of the spring is increased by the amount of the folded back portion, and since the ceiling hole is covered with the panel, it is difficult for the spring to be plastically deformed even if the spring is pulled. In particular, when the spring is folded back above the speaker as in the second invention, the length of the spring can be made considerably long. Further, in the second invention, when the folding tool is provided with a groove, the spring can be smoothly folded back.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment is shown in FIGS. As shown in FIG. 1, in this embodiment, a ceiling hole 24 is formed in the ceiling 22, and the ceiling hole 24 is, for example, circular or rectangular. Inside the ceiling 22, a pedestal 26 has a ceiling hole 2
It is arranged so as to cover 4. The pedestal 26 has, for example, a rectangular main plate 28 that is located at a distance from the ceiling 22, and a peripheral wall 30 that supports the main plate 28 is provided around the main plate 28.
Is formed, and this is in contact with the ceiling 22. A circular opening 32 is formed at a position corresponding to the central ceiling hole 24 of the main plate 28. The opening 3 is provided on the back side of the main plate 28.
A speaker 34 is attached so that the voice can be heard from No. 2.

The main plate 28 is provided with two folding members 36, 36 integrally with the main plate 28. These folding tools 3
6 and 36 are arranged outside the speaker 34 (left and right direction of the speaker 34 in FIG. 1), and
Are located at the center of the front-back direction (front-back direction in FIG. 1). These folding tools 36, 36 extend upward from the main plate 28, and the tips thereof are the speaker 3
4 extends further upward than the upper part of 4, and is folded back to the main plate 28 while curving gently outward toward the outer side, that is, the side opposite to the speaker 34, at this tip portion, and returns to the main plate 28.
It has a letter shape. A groove 38 is formed in the center of the folding member 36 in the front-rear direction, as shown in a partially enlarged view in FIG.

Grooves 38, 3 of the folding tools 36, 36
8 along these grooves 38, 38 respectively.
0 and 40 are arranged. This folding tool 36, 36
Since the tip of the spring is bent, the springs 40, 40
The wrapping of the spring is also done gently, and the springs 40, 40
Does not get stuck in something that prevents it from moving smoothly.

These springs 40, 40 are in the normal state, that is, in the state in which they are not pulled, the groove 3 of the folding tool 36.
8 has a length slightly longer than that of the springs 40, 40, and one end of each of the springs 40, 40 has a hole 42 formed in the main plate 28.
A spherical projection 44 for engagement is attached to the tip end of the spherical projection 44. As shown in FIG. 3, the diameter d2 of the spherical protrusion 44 is larger than the diameter d1 of the hole 42. Therefore, even if the springs 40, 40 are pulled, the spherical protrusion 44 does not pass through the hole 42.
The movement of the spring 40 is prevented.

The other ends of the springs 40, 40, that is, the ends near the speaker 34, pass through the holes 46, 46 formed in the main plate 28, the ceiling hole 24, and the ceiling 22. It is pulled down. The ends on the pulled-out side are joined to the panel 48.

The panel 48 is formed in such a size that the ceiling hole 24 can be covered, and projections 50, 50 are formed at the center portions of both ends in the front-rear direction.
The springs 40, 4 are inserted into the engaging holes 52, 52 formed in the holes 0, 50.
The other end of 0 is engaged. Spring 4 like this
Since 0 and 40 are pulled and pulled out from the ceiling hole 24, when the springs 40 and 40 return to the original state, the panel 48 is pulled up and the panel 48 covers the ceiling hole 24.

In this way, the panel 48 is attached to the ceiling hole 24.
The springs 40, 40 cover the folding member 38.
Since it is folded back by, the total length in the normal state can be made longer than in the case where a spring is coupled to the upper wall of the speaker box 6 as shown in FIG. 7, for example. Therefore, in order to cover the ceiling hole 24 with the panel 48, the other ends of the springs 40, 40 are connected to the protrusions 50 of the panel 48.
Even if the springs 40, 40 are pulled so as to engage with the engagement holes 52 of the spring 50, the springs 40, 40 are less likely to be plastically deformed.

When the ceiling hole 24 is actually covered with the panel 48, the springs 40, 40 are fed into the ceiling 22 through the holes 42, 42 and folded back along the grooves 38, 38 of the folding members 36, 36 to form the holes. Pull out from 46,46. In this case, since the grooves 38, 38 are formed, the springs 40, 4
It is easy to fold back and pull out 0. Holes 46, 4
The springs 40, 40 pulled out from 6 are pulled and brought into a tension state, and the engagement holes 52 of the protrusions 50, 50 of the panel 48,
Engage 52. In this state, when the tension of the springs 40, 40 is released, the restoring force of the springs 40, 40 raises the panel 48, and the panel 48 covers the ceiling hole 24.

Even in the above-mentioned manner, the springs 40, 40 may be plastically deformed to be in a so-called stretched state. In such a case, if the springs 40, 40 are replaced one by one, the mounting efficiency of the panel 48 becomes poor. Therefore, in order to cope with such a case, spring engaging portions 54, 54 are provided on the lower surface of the main plate 28 so as to be positioned further outside than the hole 42.

As shown in the enlarged view of FIG. 4, these spring engaging portions 54, 54 are both from the lower surface of the main plate 28 to the peripheral wall 3.
It is composed of two plate-shaped members 56, 56 provided so as to face the 0 side. The distance d3 between the plate-shaped members 56, 56 is set smaller than the diameter d2 of the spherical protrusion 44.

When both or one of the springs 40, 40 is plastically deformed, as shown in FIG. 5, the spherical projection 44 is pulled toward the plate-like members 56, 56 as shown by the arrow, and the spherical projection 44 is pulled. The plate-shaped members 56, 56 are engaged with each other. As a result, even if the spring 40 is plastically deformed, the spring force can be recovered, and the labor of replacing the spring 40 one by one can be saved.

FIG. 6 shows a second embodiment. In this embodiment, a speaker box 58 is provided so as to cover the ceiling hole 24, and the speaker 34 is arranged on the panel 48.

Folding tools 60, 60 for the springs 40, 40
Are provided on the upper wall of the speaker box 58. Further, engaging portions 62, 62 are formed inward from the side wall of the speaker box 58 toward one end of the springs 40, 40. These engaging portions 62, 62 are formed by, for example, a plate-shaped body having a groove smaller than the diameter of the spherical protrusion 44 provided on the springs 40, 40.

The springs 40, 40 are provided with engaging portions 62,
After the spherical projections 44, 44 are engaged with 62, respectively, they are directed upward, are folded back by the folding tools 60, 60, and are pulled out from the ceiling hole 24 to the outside, and then the spring 40,
40 is pulled to be in a tensioned state, and the protrusion 5 of the panel 48 is
The springs 40, 40 are engaged with the engagement holes 52, 52 of 0, 50. Then, when the tension of the springs 40, 40 is released, the spring force of the springs 40, 40 raises the panel 48, and the panel 48 covers the ceiling hole 24.

Also in this embodiment, since the folding tools 60, 60 are provided, the total length of the springs 40, 40 can be made longer than in the case where the spring is directly fixed to the upper wall of the speaker box 58. , The spring 4 as in the first embodiment
It is possible to make 0 and 40 resistant to plastic deformation.

In this embodiment, the folding tools 60, 60 are provided on the upper wall of the speaker box 58, but the folding tools 36, 36 similar to those in the first embodiment may be used. In this case, what corresponds to the main plate 28 of the first embodiment needs to be provided on the side wall of the speaker box 58.

Although two springs 40 are provided in both of the above embodiments, the number of springs 40 can be arbitrarily increased.

Further, in the first embodiment, the folding tool 36 is used.
Although the tip has an inverted U-shape with a curved tip, a tip having a leg portion at right angles to the horizontal portion may be used.

[0026]

As described above, according to the first and second aspects of the invention, since the spring for covering the ceiling hole in the panel is folded back by the folding tool, the spring is as much as the folded back portion. The length of the spring can be increased, and since the panel covers the ceiling hole, even if the spring is pulled, it is less likely to be plastically deformed as compared with the case where the total length of the spring is short. Therefore, the panel and the ceiling can be brought into close contact with each other, acoustic chattering does not occur, and the appearance becomes good. In particular, when the spring is folded back above the speaker as in the second aspect of the invention, the length of the spring can be made considerably longer, so that plastic deformation can be made more difficult. Furthermore, when the folding tool is provided with a groove as in the third aspect of the invention, the spring is guided in the groove, so that the folding can be smoothly performed.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a first embodiment of a ceiling speaker mounting device according to the present invention.

FIG. 2 is a partially omitted perspective view of a folding tool used in the first embodiment.

FIG. 3 is a view showing a spring mounting structure in the first embodiment.

FIG. 4 is a perspective view of a spring engaging portion according to the first embodiment.

FIG. 5 is an explanatory view of the engagement state of the spring with the spring engagement portion in the first embodiment.

FIG. 6 is a vertical sectional view of the second embodiment.

FIG. 7 is a vertical cross-sectional view showing an example of a conventional ceiling speaker mounting device.

FIG. 8 is a vertical cross-sectional view showing another example of a conventional ceiling speaker mounting device.

[Explanation of symbols]

22 ceiling 24 ceiling holes 36 60 Folding tool 40 spring 48 panels

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04R 1/02 102 H04R 1/02 105

Claims (4)

(57) [Claims] 1. A speaker provided corresponding to the ceiling hole above a ceiling hole formed in the ceiling, a plurality of folding members provided outside the speaker, and a bottom surface of the ceiling. A panel that covers the ceiling hole on the side, one end of which is coupled to the panel, enters the ceiling hole, and is folded back by the folding tool toward the side opposite to the speaker and toward the ceiling hole, and the other end. And a plurality of springs fixed in the vicinity of the ceiling. 2. A speaker provided corresponding to the ceiling hole above a ceiling hole formed in the ceiling, and a speaker provided outside the speaker in the ceiling above the vicinity of the speaker. Toward the ceiling and a plurality of folding tools that are folded back to the side opposite to the speaker at a tip end portion above the speaker and cover the ceiling hole on the lower surface side of the ceiling. Mounting a ceiling speaker, comprising: a panel; and a plurality of springs, one end of which is attached to the panel, folded back toward the ceiling hole along each of the folding tools, and the other end of which is fixed near the ceiling. apparatus. 3. The ceiling speaker mounting device according to claim 2, wherein each of the folding members has a groove into which the spring is inserted. 4. The ceiling speaker mounting device according to claim 1, wherein each spring has a length slightly longer than a path of the spring when the spring is not stretched. Mounting device.