JPH04638Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a speaker mounting device that is used by being embedded in a ceiling or wall surface.

(Prior art) Conventionally, as this type of speaker mounting device, the third
As shown in the figure, a substantially U-shaped fixture 3 and a flat plate-shaped fixing fixture 4 are inserted into the speaker mounting hole 2 provided in the ceiling plate 1.
There was one in which a speaker 7 attached to a panel 6 was attached to a fixture 3 with a V-shaped spring 8.

(Problem to be solved by the invention) However, if the ceiling panel 1 is sandwiched between the fixture 3 and the fixing fixture 4 in this way, and it is fixed to the speaker mounting hole 2 using only the coupling force of the thumbscrew 5, During long-term use, the thumbscrew 5 sometimes loosened or fell off due to vibrations caused by the operation of the speaker 7 or vibration shocks applied to the ceiling from the outside.
If the thumbscrew 5 becomes loose, abnormal vibration noise will be generated at the loosened location due to the vibrations of the speaker 7 during operation, and if the thumbscrew 5 falls off, the speaker 7 or its mounting device may fall from the ceiling. The dot was hot.

(Means for Solving the Problems) This invention was made to solve the above-mentioned conventional problems, and will be described in detail below based on embodiments shown in the drawings.

As shown in FIG.
0, a substantially U-shaped fixture 11 that engages along the central longitudinal outer peripheral surface of the storage case 10, and a fixture 12 that is attached to the fixture 11 with a thumbscrew 13.

The speaker housing case 10 is integrally molded with synthetic resin, and as shown in FIG. 2, has a cylindrical shape that follows the inner circumference of a speaker mounting hole 15 formed in a plate-like member 14 that constitutes the ceiling, wall surface, etc. .

A flange portion 16 having a larger diameter than the speaker mounting hole 15 and expanding outward is formed at this lower end. Further, in the center of the upper surface, there is a band-shaped stepped portion 17 that spans both ends, and near both ends, wave-shaped elastic pieces 18 are formed that extend from both sides of the stepped portion 17 to a position above. Openings 20 surrounded by a pair of left and right inclined frames 19 expanding downward are provided on both side surfaces following both ends of the stepped portion 17 . The inclined frame 19 is bent vertically downward from approximately the center, and two engaging claws 21 projecting outward are formed on the lower side of the inclined frame 19.
A small protrusion 32 is provided at the outer lower end of.

The fixture 11 is made by punching and bending a band-shaped sheet metal whose width is slightly smaller than the stepped portion 17 of the storage case 10.

The intermediate piece 22 is fitted into the stepped portion 17 of the storage case 10 in a depressed state against the pressure of the elastic piece 18, and both legs 23 are continuously formed at both ends of the intermediate piece 22. . These legs 23
The inclined piece 24 is inclined in a figure eight shape along the inclined frame 19 and has a slit-shaped slide hole 29 having a width slightly larger than the thread diameter of the thumbscrew 13, and an engaging claw 21 that continues vertically downward from the lower end of the inclined piece 24. Engagement hole 2 engaged with
5 and a locking piece 27 extending horizontally outward from the lower end of the vertical piece 26 and contacting the lower surface of the plate member 14 around the speaker mounting hole 15.

The fixture 12 has a screw hole 28 near one end;
Slide hole 29 of inclined piece 24 by thumbscrew 13
It is installed so that it can be moved freely along the Note that FIG. 1 only shows one of the fixtures 12 and thumbscrew 13. The combined speaker housing case 10 and mounting fixture 11 are fixed by sandwiching the plate-like member around the speaker mounting hole 15 between the locking piece 27 and the fixture 12. A support piece 30 extending inward from the upper end of the locking hole 25 is formed on the vertical piece 26 of the fixture 11 . This support piece 30 is provided with opposing notches 31 . A speaker 34 attached to the front panel 33 is placed in this notch 31 with a V-shaped coil spring 35.
It is elastically supported through.

(Function) With this structure, when the speaker housing case 10 and the fixture 11 are combined, the force that tries to restore the elastic piece 18 from the depressed state, that is, pushes the fixture 11 upward. They are elastically bonded by the force that tries to bind them. The protrusion of the housing case 10 functions to prevent the engagement hole 25 of the fixture 11 from coming off.

The fixture 12 is temporarily fixed with a thumbscrew 13 at an upper position overlapping the inclined piece 19 of the fixture 11 before being attached to a ceiling or the like. Insert the speaker in this state into the speaker mounting hole 15 from below, and
While pressing the locking piece 27 against the lower surface of the plate member 11, loosen the thumbscrew 13 and slide the fixture 12 diagonally downward and outward, and when the lower end hits the upper surface of the plate member 14, Tighten the thumbscrew 13 again.
This completes the fixing of the speaker mounting device to the ceiling, etc., and the speaker 3 with panel 33 is attached to this support piece 30.
4 is detachably attached via a coil spring 35.

In such an attached state, the mounting tool 11 and the speaker housing case 10 are elastically connected by the elastic piece 18, so that it acts as a lock for the thumbscrew 13 against vibrations caused by the speaker 34 itself or external factors, and also prevents the thumbscrew 13 from loosening. , generation of abnormal vibration noise at joints between component parts is prevented. Also, thumbscrew 13
Because it is difficult to loosen, abnormal vibration noise (chattering sound) that is likely to occur due to loosening can be prevented. Furthermore, there is less fear that the speaker 34 or this mounting device will fall from the ceiling or the like due to loosening of the thumbscrew 13, thereby increasing safety.

(Effects of the invention) As described above, according to this invention, it is possible to prevent the mounting screws from loosening due to vibrations caused by the speaker itself or external factors, and to prevent the occurrence of abnormal vibration or resonance noise between component parts. In addition, various excellent practical effects can be obtained, such as being able to prevent speakers mounted on a ceiling or the like from falling, thereby increasing safety.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a speaker mounting device embodying this invention, FIG. 2 is a sectional view showing the same speaker mounting state, and FIG. 3 is a sectional view showing a conventional example. 10...Speaker housing case, 11...Mounting tool, 12...Fixing tool, 13...Thumb screw, 14...
Plate member, 15... Speaker mounting hole, 18... Elastic piece, 19... Inclined frame, 20... Opening, 22...
Intermediate piece, 23... Leg, 24... Inclined piece, 25...
Engagement hole, 27...Engagement piece, 28...Screw hole, 29
...Slide hole, 32...Protrusion, 34...Speaker.

Claims (1)

[Scope of utility model registration request] A cylinder with an open bottom end along the inner periphery of the speaker mounting hole of a board member that constitutes a ceiling, wall surface, etc., an elastic piece extending upward from this surface is formed on the top surface, and an inclined frame that expands downward on the side surface. and a speaker housing case in which engaging claws protruding outward are successively formed, and a substantially U-shaped intermediate piece that presses down the elastic piece and is engaged along the outer circumferential surface of the speaker housing case at approximately the center thereof. A downwardly expanding inclined piece along the inclined frame is formed on both sides of the intermediate piece, a slit-shaped slide hole is formed along the inclined direction, and the engaging claw is formed below the inclined piece. A mounting device is provided with an engagement hole that engages with the speaker mounting hole, and a locking piece is provided at the lower end of the mounting hole in contact with the surface of the plate member around the speaker mounting hole, and an inner wall is provided on the outside of the inclined piece of the mounting device. and a fixture that is movably coupled along the slide hole with a screw from one side, and the screw is attached to the inclined piece while the lower end of the fixture is in contact with the back surface of the plate-shaped member around the speaker mounting hole. By being fixed, the mounting tool is attached and held in the speaker mounting hole, and the engaging claw provided in the speaker housing case is engaged with the engaging hole provided in the mounting tool. , wherein the elastic piece provided on the speaker housing case is pushed down by the intermediate piece of the fixture, thereby elastically coupling the speaker housing case to the fixture. Speaker mounting device.