JPH0833076A - Ceiling speaker mounting device - Google Patents

Abstract

PURPOSE:To prevent a plastic deformation by making the whole elongation of a spring covering a panel on a ceiling the same, in the speaker mounting within a ceiling hole. CONSTITUTION:This device has a speaker frame 3 provided to cover the ceiling hole 2 punched in a ceiling 1 upward from the hole 2, a speaker panel 11 covering the ceiling hole 2 on the lower surface side of the ceiling, a coil spring 10 which is restrained in its elongation state to the engagement part where the rear part of the speaker 6 installed on the speaker frame 3 toward the speaker panel 11 is provided so that the halfway part may be detoured, and each of both ends parts passes through the speaker frame 3 and the ceiling 1 and is provided on the speaker panel 11, and a guide part composed of a circular arc shape spring guide groove 8 smoothly bending the coil spring 10 at the back side of the speaker frame 3 and directing the spring to the engagement part. The device is provided with a hard cover T to cover the back surface of the speaker. The hard cover 7 is provided with the spring guide groove 8. As the spring guide part, arch-shaped parts or even parts whose end parts face with each other, leaving a space between them, can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling speaker mounting device, and more particularly to an improved mounting structure for mounting a panel on the lower surface of a ceiling hole with a coil spring or the like.

[0002]

2. Description of the Related Art Conventionally, as one structure for mounting a speaker in a ceiling hole provided in a ceiling, there is a structure in which a speaker and a panel are mounted by a restoring force of a spring. In this case, for example, as shown in FIG. 7, a ceiling hole 32 is formed in the ceiling 31, and the speaker frame 33 is provided in the ceiling 31 so as to cover the ceiling hole 32.
The speaker 35 is provided so as to be located on the back surface side of the opening 34 formed in the speaker frame 33 so as to correspond to the ceiling hole 32. The speaker 35 is entirely covered with a speaker cover 36 made of cloth, for example.

A coil spring 37 attached to the upper surface or side surface of a speaker cover 36 covering the speaker 35.
Of the speaker frame 33 is pulled out from the spring outlet 38 of the speaker frame 33 to the lower side of the ceiling hole 32, and the panel 39
, And the panel 39 is covered with the ceiling hole 32 by the contraction action of the spring 37.

[0004]

However, such a ceiling speaker mounting structure has a speaker cover 36.
Both ends of the spring 37 attached to the upper surface or the side surface of the above are engaged with the panel 39 in a pulled state, and the restoring force of the spring 37 is utilized to attach the panel 39 to the ceiling hole 32.

However, when the spring 37 is pulled and both ends thereof are to be engaged with the panel 39, the coil spring 37 is sufficiently caught because the corner of the spring lead-out port 38 of the speaker frame 33 is largely bent. When the spring 37 is not stretched and is pulled in this state to engage the panel 39, the pitch of the spring portion 37b between the ceiling hole 32 and the engaging hole of the panel 39 is changed to the spring portion 37a on the speaker cover 36. It spreads from the pitch of
There is a problem that the panel 39 cannot be tightly covered by the restoring force of the spring 37 on the ceiling portion due to plastic deformation. Further, there is a problem that the convenience of mounting, which is an advantage of this type of speaker mounting device, is impaired.

In view of the above, the present invention, when mounting the panel on the ceiling by the spring attached to the upper surface or the side surface of the speaker, pulls the spring on the speaker and the spring between the ceiling hole and the panel. By making the time stretch the same, the panel and ceiling can be closely attached.

[0007]

Means for Solving the Problems According to the means of the present invention, a speaker frame is provided above a ceiling hole formed in a ceiling so as to cover the ceiling hole, and the ceiling hole is covered on the lower surface side of the ceiling. The speaker panel to be covered and the rear part of the speaker installed on the speaker frame facing the speaker panel are provided so as to bypass the middle part, and both ends of the speaker panel penetrate the speaker frame and the ceiling, respectively, and are provided on the speaker panel. A coil spring locked in the joint portion in an extended state; and a guide portion including an arc-shaped spring guide groove for smoothly bending the coil spring on the rear side of the speaker frame and directing it toward the engaging portion. Have.

In the above means, it is preferable that a hard cover is provided so as to cover the back surface of the speaker, and the spring guide groove is provided in the hard cover. In the above means, it is assumed that the guide portion is formed of an arched part having a spring guide groove corresponding to the entire length of a portion of the spring located on the rear side of the speaker frame, and is attached to the speaker frame. Good. In the above-mentioned means, it is preferable that the guide portion is formed in a substantially arcuate shape which stands up from the vicinity of the spring penetrating portion of the speaker frame, bends smoothly, and has its end portions facing each other with a space therebetween. .

Further, another means of the present invention is to install a speaker panel in which a ceiling hole formed in the ceiling is covered on the lower surface side of the ceiling, a speaker is attached to the speaker panel and the speaker portion is inserted into the ceiling hole. A container-shaped hard cover that covers the rear surface of the speaker while the speaker panel is in contact with the lower surface of the ceiling, and the lower edge reaches the upper surface of the ceiling, and smoothly bends downwards on both sides through the central top of the outer surface of the hard cover. However, both ends of the spring guide groove are formed so as to extend downward and reach the lower edge, and both ends pass through the spring guide groove and extend through the ceiling to the engaging portion provided on the speaker panel. And a coil spring that is locked in this state.

[0010]

According to the means of the present invention, the speaker attached to the speaker frame is fixed such that the ceiling portion located between the speaker frame and the speaker panel is sandwiched by the tensile acting force for restoring the coil spring. The coil spring is smoothly bent in the middle part and engages with the speaker frame side, and both ends are guided by the guide grooves toward the engaging part of the speaker panel. When pulled and stretched, and when contracted, the coil springs are angular and there are no catches in the middle of the coil spring, so that each portion always expands and contracts over the entire length.

The structure in which the spring guide groove is provided in the hard cover can also be used as a fixing means for attaching the hard cover to the speaker or the speaker frame because the hard spring pulls the hard cover to the upper surface side of the ceiling. Then, the guide member having the spring guide groove and the speaker cover are integrated into one component. When the spring guide portion is formed of an arch-shaped part having a guide groove, the spring guide part is formed of a dedicated part, so that it can be designed to have an optimum shape so that the entire length of the coil spring uniformly expands and contracts. In the case where the spring guide portions are formed in a generally arcuate shape facing each other with a gap, there is no guide for the portion with a gap, but since the coil spring traverses the air, there is no resistance to expansion and contraction, and it is a pair of parts. This makes it possible to use the same parts for the coil springs having different distances between both sides of the speaker frame and the ceiling.

According to another aspect of the present invention, the speaker mounted on the speaker panel is fixed such that the ceiling portion located between the speaker panel and the hard cover is sandwiched by the tensile acting force for restoring the coil spring. To be done. The speaker is attached to the speaker panel, the speaker frame is omitted, the spring guide groove is provided in the hard cover, and the guide member and the speaker cover are integrated into one part, and the coil spring pulls the hard cover to the upper surface side of the ceiling. Because
It can also be used as a fixing means for attaching the hard cover to the ceiling.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. In the figure, 1 is a ceiling, and a circular or rectangular ceiling hole 2 is formed in this ceiling 1. Reference numeral 3 denotes a speaker frame for mounting a speaker, which is formed so as to cover the ceiling hole 2 from the back of the ceiling.
Is in contact with the upper surface of the ceiling 1 at the lower end of the peripheral wall 4, and the space between the ceiling 1 and the ceiling 1 is maintained.

A circular opening 5 is formed in the speaker frame 3 at a position corresponding to the central ceiling hole 2.
A speaker 6 capable of emitting sound from the opening 5 is attached to the back surface side of the speaker frame 3. 7 is a speaker 6
2 is a speaker cover that covers the speaker 6 for the purpose of protecting the speaker 6 from dust and the like, and is a hard cover formed of plastic in a hemispherical dome shape as shown in FIG. 3 is in contact with the upper surface. The cover 7 has a guide groove 8 for guiding a coil spring 10 described later. The spring guide groove 8 is a single groove formed on the dome-shaped outer surface in such a manner as to divide the spring guide groove into two equal parts, and passes through the top portion, and both ends reach the lower end of the cover 7. Spring guide groove 8
The groove bottom has a semi-arcuate shape whose groove bottom is slightly larger than the radius of the coil spring 10, and the side surfaces rise from both ends of the semi-arcuate shape and are continuous with the dome-shaped surface. It is approximately equal to the outer diameter of the spring. Therefore, the spring guide groove 8 has a semicircular arc shape along the dome-shaped surface and is smoothly bent. The lower end of the spring guide groove 8 is directed downward, and the speaker frame 3 at a position corresponding to the lower end is provided with an insertion hole 9 through which the coil spring 10 can be inserted with a margin.

The coil spring 10 is housed partway in the spring guide groove 8 and both ends thereof are pulled out downward through the insertion holes 9 and 9 and the ceiling hole 2, and hooks are provided at the respective ends. Has been formed. A speaker panel 11 through which sound is transmitted is arranged so as to cover the ceiling hole 2 from the lower surface of the ceiling. The hook 1 at the end of the coil spring 10 is formed on the upper surface of the speaker frame 11 and is a protrusion 1.
The two engaging holes 13 are engaged. In the state shown in FIG. 1, the hook is engaged with the engaging hole 13 and the speaker panel 11 is pulled down against the coil spring 10. When the pulling down force is released, the coil spring 10 is released.
Of the coil spring 10 so that the speaker panel 11 contracts and presses against the lower surface of the ceiling 1 with sufficient strength.
The wire diameter, coil diameter, etc. are determined.

FIG. 3 is a modification of the first embodiment, in which the speaker frame 3 is omitted and the speaker 6 is attached to the speaker panel 11. When the speaker panel 11 is attached to the lower surface of the ceiling, the rear portion of the speaker 6 passes through the ceiling hole 2 and is located inside the cover 7. The ceiling hole 2
Is formed slightly smaller to support the lower edge of the cover 7 at the inner edge portion, and a portion 9a corresponding to the insertion hole 9 in the speaker frame 3 is formed in the inner edge of the ceiling hole 2 in a notched shape. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

FIG. 4 shows a spring guide component 16 used in the second embodiment of the present invention. This spring guide component 16 is used in place of the speaker cover 7 of the first embodiment, and is exclusively formed in an arch shape for forming a spring guide groove 17 corresponding to the spring guide groove 8 of the first embodiment. It is a part of. Although not shown, the assembled state is a cross-sectional view as shown in FIG. 1, and since the spring guide component 16 has an arch shape, it is screwed to the speaker frame 3 so as not to fall. Are different. In FIG. 4, 18 is a screw fastening flange, and 18a is a screw insertion hole. When the spring guide component 16 is used, the speaker is not covered by the spring guide component 16. Therefore, for example, a cloth cover 36 as shown in FIG. 7 is provided as needed.

5 and 6 show a third embodiment. This embodiment uses spring guide parts 19 and 19 shown in FIG. 5 in place of the arch-shaped spring guide part 16 of the second embodiment. As a concept, the spring guide component 19 is formed by omitting the intermediate portion of the spring guide component 16 and dividing the spring guide component 16 into both sides. The portion indicated by 14 in FIG. 5 is the omitted portion. The spring guide parts 19 and 19 are of the same shape and are upright from below, a part 19a which is subsequently bent in an arc shape, a screwing flange 20 having a screw insertion hole 20a at the lower end, and a bent part. The rib 21 is formed by the rib 21 provided on the inside of the coil spring, and 22 is a spring guide portion of the coil spring 10.
As shown in FIG. 6, the spring guide parts 19 and 19 are fixed by the set screw so that the upper end of the spring guide groove 22 faces the speaker frame 3, that is, in the state shown in FIG. Reference numeral 23 in the figure denotes a dustproof cover provided separately. FIG.
The same parts as those shown in FIG.

In each of the ceiling speaker mounting devices of the above-described embodiments, similarly, after the inner portion of the ceiling 1 is installed, the lower end of the coil spring 10 is pulled out and the engaging hole of the convex portion 12 of the speaker panel 11 held below. The hooks at both ends of the spring 10 are engaged with the coil spring 13, and the coil spring is stretched in this state. Therefore, when the holding of the speaker panel 11 is released, the speaker panel 11 contacts the lower surface of the ceiling 1 by the contracting action of the coil spring. The speaker is attached and comes into contact. Coil spring 10
When both ends are pulled out downward, they are guided by the spring guide grooves 8, 17, 22 in the respective embodiments, so that they do not get caught in the middle and expand and contract equally over the entire length. The elongation required for mounting is ensured within the elastic deformation of the coil spring 10.

Although the cover 7 is made of plastic in the first embodiment and its modification, metal may be used instead of the cover 7, and the material is not to be caught by the expansion and contraction of the coil spring. Further, the cover shape is not limited to the dome shape, but may be any shape, but the spring guide groove 8 is assumed to have a bent portion smoothly bent in an arc shape having a radius as large as possible.

[0021]

According to the invention as set forth in claim 1, when the coil spring pulls the end portion downward and is stretched and contracts, the coil spring does not catch in the middle, and each portion is always the same over the entire length. Since the coil spring expands and contracts, the coil spring does not undergo plastic deformation due to the expansion of the coil spring required when the speaker is attached and detached. Therefore, a good mounting state in which the speaker panel is firmly attached to the lower surface of the ceiling can be obtained, and the simplicity of the mounting work can be utilized. According to the invention of claim 2,
There is no need to use special screws for fixing the hard cover to the speaker or speaker frame,
Since the spring guide member and the speaker cover are integrated into one component, the number of components can be reduced.

According to the third aspect of the present invention, the spring guide groove can be designed to have an optimum shape so that the entire length of the coil spring can be uniformly expanded and contracted, so that the speaker panel mounting work can be reliably performed. Play. According to the invention as set forth in claim 4, since the guide parts are divided into two parts, the guide parts can be shared by the speakers having different installation intervals, so that there is an advantageous effect in cost reduction. According to the invention described in claim 5, as in the invention described in claim 1, since the coil spring does not get caught in the middle of the coil spring and each part always expands and contracts over the entire length, it is necessary when attaching and detaching the speaker. Since the coil spring does not plastically deform due to the expansion of the coil spring, the speaker panel can be firmly attached to the lower surface of the ceiling and a good mounting state can be obtained.
Further, the effect of utilizing the simplicity of the mounting work is exerted, and the frame for mounting the speaker is omitted, and the effect of reducing the number of parts is further exerted.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic external appearance of the embodiment.

FIG. 3 is a partial vertical cross-sectional view showing a modification of the first embodiment.

FIG. 4 is a perspective view showing a spring guide component used in a second embodiment of the present invention.

FIG. 5 is a perspective view showing a spring guide component used in a third embodiment of the present invention.

FIG. 6 is a partial vertical sectional view showing a third embodiment of the present invention.

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

[Explanation of symbols]

 1 Ceiling 2 Ceiling Hole 3 Speaker Frame 6 Speaker 7 Hard Cover 8 Spring Guide Groove 10 Coil Spring 11 Speaker Panel 16 Spring Guide Component 17 Spring Guide Groove 19 Spring Guide Groove 22 Spring Guide Groove

Claims (5)

[Claims] 1. A speaker frame provided above a ceiling hole formed in a ceiling so as to cover the ceiling hole, and a speaker panel for covering the ceiling hole on a lower surface side of the ceiling.
To the speaker panel, the rear part of the speaker installed on the speaker frame is provided so that the middle part bypasses, and both ends of the speaker penetrate the speaker frame and the ceiling, respectively, and extend to the engaging part provided on the speaker panel. Ceiling speaker mounting device having: a coil spring to be locked; and a guide portion including an arc-shaped spring guide groove that smoothly bends the coil spring on the rear side of the speaker frame and faces the engaging portion. . 2. The ceiling speaker mounting device according to claim 1, wherein a hard cover is provided so as to cover the back surface of the speaker, and the spring guide groove is provided in the hard cover. . 3. The ceiling speaker mounting device according to claim 1, wherein the guide portion is formed of an arch-shaped part having a spring guide groove corresponding to the entire length of a portion of the spring located on the rear side of the speaker frame. An apparatus for mounting a ceiling speaker, which is mounted on the speaker frame. 4. The ceiling speaker mounting device according to claim 1, wherein the guide portions are erected from the vicinity of the spring penetrating portion of the speaker frame and are smoothly bent, and end portions thereof face each other with a space therebetween. An apparatus for mounting a ceiling speaker, which is formed in an arc shape. 5. A speaker panel in which a ceiling hole formed in the ceiling is covered on the lower surface side of the ceiling, a speaker is attached to the speaker panel, and a speaker portion is inserted into the ceiling hole to attach the speaker panel to the lower surface of the ceiling. A container-shaped hard cover that covers the back of the speaker in a state of contacting and the lower edge reaches the upper surface of the ceiling, and passes through the vicinity of the central top of the outer surface of the hard cover and is smoothly extended downwards on both sides to form both ends. A spring guide groove that reaches the lower edge and is directed downward, and a coil spring that extends through the spring guide groove and has both ends penetrating the ceiling and locked to an engaging portion provided on the speaker panel in an extended state. And a ceiling speaker mounting device having: