JPS5843957B2 - Ceiling-mounted speaker device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ceiling-embedded speaker device that can be installed extremely easily and quickly on a ceiling or the like.

Generally, when installing a speaker from a room to the ceiling, it is required that the speaker be easily attached and detached in order to improve workability.

Conventionally, when mounting a speaker on the ceiling, the speaker body is attached to a mounting bracket installed in a mounting hole in the ceiling using a leaf spring, helical spring, thumbscrew, etc., or a retainer is provided on the mounting bracket. It has been common practice to install an engagement tool by providing an engagement tool on the top of the speaker body and engaging the two.

With this conventional method, attaching and detaching the speaker is relatively easy, but in addition to the mounting bracket, special parts such as screws, spring materials, holders, and retainers are required to attach the mounting bracket to the ceiling mounting hole. This also requires special work, which inevitably increases costs.

The present invention has been made to solve the above-mentioned drawbacks.
A holding part for engaging and holding the upper part (rear part) of the speaker body is integrated into the center of the top plate, and a holding part with multiple holding pieces for holding the peripheral edge of the ceiling mounting hole is integrated into the lower end of the side plate. A speaker device is constituted by a speaker mount having a substantially U-shaped cross section and a certain degree of elasticity, and a speaker integrally formed with an engaging portion on the upper part of the main body that can be freely secured by inserting it into the holding portion and turning it. However, by making the width between the side panels of the speaker mount almost equal to the width of the ceiling mounting hole, and by making the distance between the outer ends of the clamping pieces of the clamping part larger than the width of the ceiling mounting hole, it is extremely easy to attach to the ceiling. It is an object of the present invention to provide a ceiling-embedded speaker device that can be installed quickly, has a reduced number of parts, has a simplified configuration, and can be manufactured at a low cost.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below based on embodiments shown in the drawings.

As shown in FIG. 1, the ceiling-embedded speaker device of the present invention has a holding part 2 for holding and holding the upper part (rear part) of the speaker body in the center of the top plate 1, and a holding part 2 at the lower end of the side plate 3. 2 for holding the peripheral edge of the mounting hole 5 provided in the ceiling plate 4
A speaker mount 7 having a substantially U-shaped cross section integrally formed with a clamping part 6 having two clamping pieces, and an engaging part 9 that can be freely engaged with the holding part 2 on the upper part of the speaker main body 8. The speaker 10 is formed of a speaker 10.

11 is a horn connected to a driver unit (not shown).

As shown in FIG. 2, the clamping portion 6 of the speaker mount γ consists of two substantially parallel clamping pieces 12 and 13.

The width between the side plates 3, 3 of the speaker mount 7 and the width of the ceiling mounting hole 5 are almost equal, and the outer end of one clamping piece 12, 13 of the clamping part 6 and the other clamping piece 12 .13
The distance from the outer end of the ceiling mounting hole 5 is larger than the width of the ceiling mounting hole 5.

Note that the shape of the holding portion is not limited to this, and may be composed of three holding pieces 14, 15, and 16, as shown in FIG. 3, for example.

The speaker mount 7 is manufactured by punching and bending a single metal plate, or by integrally molding a synthetic resin.

Further, the speaker mount 7 is manufactured so that the entire speaker mount 7 has a certain degree of elasticity.

When attaching the speaker mount 7 to the mounting hole provided in the ceiling plate, first insert the mount γ into the mounting hole 5 of the ceiling plate 4 from below as shown in FIG. Then, reduce the distance between both ends of the fixture 7 with a hand knife against the elastic force of the fixture, and when you release your hand at a predetermined position, both ends of the fixture will return to their original positions and be clamped as shown in Figure 6. The parts 6, 6 are attached to the ceiling plate by sandwiching the peripheral edge of the mounting hole 5.

Then, the speaker main body 8 is attached by engaging the engaging portion 9 on the upper part of the speaker body 8 with the holding portion 2 of the mounting tool T.

In this mounted state, as shown in FIG. 1, both ends of the fixture are pressed outward by the open end of the speaker body or cannot move inward, so that the fixture 7 cannot be detached from the mounting hole 5. There isn't.

If the clamping portions at both ends of the fixture are constructed of a lower clamping piece 12 and an upper clamping piece 17 having an angular cross-section as shown in FIG. 1, the thickness of the ceiling board can be absorbed.

Further, if the upper clamping piece 18 is provided in an oblique direction as shown in FIG. 8, the fixture can be easily attached by simply pushing it up without compressing it from both sides.

Next, embodiments of the present invention will be described based on FIGS. 9 to 11.

An engaging body 22 consisting of a long diameter part and a short diameter part is integrally connected to the upper part of the speaker main body 20 via a constriction part 21.

The manufacturing method is to form a circumferential groove in the upper part of the speaker body 20 made of aluminum or the like by a spatula drawing process, and then crush it from both sides with a mold 23 or the like to form the engaging body 22.
A method of integrally forming two halves, a method of molding symmetrical halves of a synthetic resin and joining them together, a so-called blow molding method of molding a synthetic resin using the pressure of a fluid such as air or water, etc. are used.

In addition to the shape shown in the drawings, the engaging body 22 may have a substantially ellipsoidal shape, a rectangular parallelepiped, or any other shape having a major diameter portion and a minor diameter portion.

On the other hand, as shown in FIG.
A holding hole 24 having a long diameter portion and a short diameter portion slightly larger than the outer diameter of the holding hole 24 is provided, and the speaker can be easily attached by inserting the engaging body 22 into the holding hole 24 and rotating it approximately half a turn.

In this case, if the speaker open end flange is formed to have elasticity in the vertical direction in the drawing, there will be no slack in each part when the speaker is installed.

Furthermore, other embodiments of the present invention will be described based on FIGS. 12 to 16.

A threaded part 32 having a plurality of threaded threads 31 (circumferential grooves) is provided on the upper part of the speaker body 30 to form an engaging part.

As in the case described above, a thread groove 31 is formed in the upper part of the speaker body 30 made of aluminum or the like by a spatula drawing process, a method of molding and joining symmetrical halves of synthetic resin, a method of synthetic resin blow molding, etc. Manufactured.

On the other hand, as shown in FIG.
3 is provided, and the peripheral edge of this through hole is formed into a receiving threaded part 34 such as an S washer to serve as a holding part, and the threaded part 32 is screwed into this receiving threaded part 34 to attach the speaker.

In this case, the S washer and the screw act as a lock washer and can be securely attached without loosening.

Further, it is more effective if the open end flange portion of the speaker is formed to have elasticity in the vertical direction of the drawing.

As shown in FIGS. 14 and 15, the holding portion may be one in which protrusions 36a, 36b, and 36c are provided on the periphery of the through hole 35 provided in the upper surface 1 of the fixture.

In this case, the number of protrusions may be two or four or more.

Furthermore, as shown in FIG. 16, a fixture in which cuts 38a, 38b, and 38c are provided at the peripheral edge of the through hole 3T provided in the top surface 1 of the fixture can also be used.

There is no problem even if two or four or more cuts are provided.

In this case, the speaker can be easily attached by simply pushing in the threaded portion 32 of the speaker body.

The ceiling-embedded speaker device of the present invention can be applied to both a horn speaker and a cone speaker, but is particularly suitable for a folded horn speaker.

As explained above, in the ceiling-embedded speaker device of the present invention, the holding part and the clamping part are integrally formed in the mounting fixture, and the engaging part is integrally formed in the speaker body. Since only the fittings are required, the number of parts is reduced, and costs can be reduced.

It also has the effect of being able to be easily and reliably attached simply by pushing and turning from below.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of a ceiling-embedded speaker device of the present invention, Fig. 2 is a perspective view showing an embodiment of the speaker mount, and Fig. 3 is an embodiment of the holding part of the speaker mount. FIGS. 4 to 6 are explanatory diagrams showing the state in which the speaker mount is attached to the ceiling board, and FIGS. 7 and 8 show other embodiments of the holding part of the speaker mount. Perspective view, No. 9
10 is a top view of the main body of a ceiling-embedded speaker according to another embodiment, FIG. FIG. 13 is a partially cutaway side view showing still another embodiment of the built-in speaker device, FIG. 13 is a perspective view showing one embodiment of the holding portion of the speaker mounting device, and FIG. FIG. 15 is a sectional view taken along the line A-A in FIG. 14, and FIG. 16 is a plan view showing still another embodiment of the holding portion of the speaker mount. 1... Fixture top plate, 2... Holding part,
3... Fixture side plate, 4... Ceiling plate,
5... Mounting hole, 6... Holding part, 7...
...Speaker mounting bracket, 8...Speaker body, 9...Engagement part, 10...Speaker,
11... Horn, 12, 13, 14, 15, 1
6,1γ. 18... Clamping piece, 20... Speaker body, 21... Throttle part, 22... Engaging body, 23... Mold, 24...Retention hole, 3
0... Speaker body, 31... Thread groove, 32... Threaded part, 33... Through hole,
34...Reception screw part, 35...Through hole,
36a, 36b. 36c...Protrusion, 37...Through hole, 3
8a, 38b. 38c...notch.

Claims (1)

[Claims] 1. A holding part for holding and holding the upper part of the speaker body is integrally formed at the center of the top plate, and a holding part having a plurality of holding pieces for holding the peripheral edge of the ceiling mounting hole is integrally formed at the lower end of the side plate. It consists of a speaker mount that has a roughly U-shaped cross section and has a certain degree of elasticity, and a speaker that has an integrally formed engaging part on the upper part of the main body that can be freely secured by inserting it into the holding part and turning it. A ceiling-embedded speaker device characterized in that the width between the side panels and the width of the ceiling mounting hole are approximately equal, and the distance between the outer ends of the clamping pieces of the clamping portion is larger than the width of the ceiling mounting hole.