KR100220017B1 - Hauling prevention structure of multimedia monitor - Google Patents

Abstract

The present invention relates to a multimedia monitor. In the related art, fixing a vibrating chain speaker directly to a plastic object using a screw means that the vibrating body is an integral vibrating body. At the same time, a cathode- Which is a fatal defect in a monitor, unlike a TV, and also in the case of a dome acoustic barrel, a large number of screws are fastened, so that productivity is lowered by attaching a nonwoven fabric to the fastening portion of the screw There are many factors that cause cost increase, and at the same time, they can not produce desired quality compared to investment cost or productivity.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a structure capable of absorbing a direct vibration of a speaker in a multimedia monitor on which speakers are mounted, And it is the anti-howling structure of the multimedia monitor which aims to manufacture the product with the quality proportional to the investment cost or productivity by improving the productivity due to the cost reduction.

Description

Howling prevention structure of multimedia monitor

FIG. 1 is a perspective view of the conventional anti-falling structure of a conventional multimedia monitor. FIG.

FIG. 2 is an exploded perspective view of the dome of the conventional multimedia monitor in the anti-feedback structure. FIG.

FIG. 3 is an exploded perspective view of the anti-falling structure of the multimedia monitor of the present invention. FIG.

FIG. 4 is an assembled cross-sectional view of the anti-falling structure of the multimedia monitor of the present invention; FIG.

FIG. 5 is a detailed cross-sectional view showing the combination of the anti-falling structure of the multimedia monitor of the present invention.

6 is a detailed sectional view of a vibration trace in the anti-falling structure of the multimedia monitor of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

11: cabinet 11a: rib

11b: fastening hole 11c: fastening rib

12: speaker 12a: housing

12b: fixing hole 13: damping holder

13a: groove 13b: speaker fixing groove

13d: Through hole 14: rear sound

14a: Departure-preventing rib 14b: Screw hole

15: Screw

In particular, the present invention relates to a multimedia monitor, and more particularly, to a structure capable of absorbing a direct vibration of a speaker in a multimedia monitor on which speakers are mounted, To a structure for preventing howling of a multimedia monitor.

As shown in FIG. 1, the conventional anti-falling structure of the multimedia monitor has a structure in which a plurality of bosses 1a and elliptical ribs 1b are formed on both sides of the cabinet 1 A speaker 2 formed by machining a plurality of fastening holes 2a at square corners and a plurality of screws 3 coupled to the speaker 2, The cabinet 1 has a structure in which vibration of a screen is detected because a cathode ray tube 1, which is integrally fixed to the cabinet 1 with screws 3, transmits vibrations directly to the cabinet 1.

In the case where the speaker is 1W to 3W, as shown in FIG. 2, the speaker 2 is covered with the dome acoustic barrel and then connected to the cabinet 1 described in FIG. 1, The dome acoustic barrel is composed of a front acoustic barrel 4 covering the front portion of the sprinkler 2 and a rear acoustic barrel 5 covering the rear portion of the speaker 2. The front acoustic barrel 4 has a front portion A fixing boss 4a protrudes so that a screw 3 passing through a fastening hole 2a of the speaker 2 can be fastened and a speaker 2 is seated on the center of the protruded fixing boss 4a A speaker seating rib 4b is protruded and a coupling boss 4c is formed so that the rear acoustic tube 5 can be coupled to the rectangular corner portion.

A coupling member 4d protrudes from the rear of the front acoustic tube 4 at the upper and lower portions thereof so as to be coupled to the cabinet 1 according to the fastening of the screw 3. [

The rear acoustic tubes 5 are provided with a plurality of fastening holes 5a so as to be fastened to the coupling bosses 4c of the front acoustic tubes 4 covering the front portion of the speaker 2 according to the fastening of the screws 3. [ The front acoustic tubes 4 and the speaker 2 and the rear acoustic tubes 5 are integrally fastened together by the screws 3 so that they form the same vibrating body. The vibration of the speaker 2 is finally transferred to the solid body as the dome acoustic barrel is fastened to the boss la on the cabinet 1 by the screw 3 so that the vibration of the screen can not be prevented.

That is, in the conventional anti-falling structure of the multimedia monitor, fixing the speaker 2 with a screw 3 directly to the plastic object means that the speaker is an integral vibrator, and at the same time, , Which causes a serious screen trembling phenomenon due to receiving the same vibration, which is a fatal defect in a monitor unlike a TV, and in the case of a dome acoustical tube, a plurality of screws (3) are fastened to the left and right And the nonwoven fabric is adhered to the fastening portion of the screw 3, so that the productivity is decreased. In addition, there are many factors of cost increase, and at the same time, there is a fundamental problem that the desired quality can not be produced compared to the investment cost or productivity.

Therefore, in order to solve such a problem, the present invention proposes a structure capable of absorbing a direct vibration of a speaker in a multimedia monitor on which speakers are mounted by absorbing body vibration, thereby blocking vibration transmission to a cathode ray tube, And at the same time to improve the productivity by cost reduction and to produce a product with quality proportional to investment cost or productivity.

As shown in FIGS. 3 to 6, the anti-falling structure of the multimedia monitor of the present invention for achieving the above object has a structure in which a rib 11a, which can be contacted with a speaker, is protruded on both inner side surfaces thereof, And a rod-like housing 12a formed with a fixing hole 12b are integrally formed on the upper and lower sides of the cabinet 11a, A damping holder 13 of urethane or rubber material fastened to the coupling rib 11c of the cabinet 11 and fixing the speaker 12; And a rear sound box 14 protruding from the inner side of the cabinet 11 and the speaker 12 to prevent the speaker 12 from being separated from the speaker 12, On the front surface of the holder 13 A radial groove 13a is machined so that radial coupling ribs 11c protruding from upper and lower portions of the beet 11 are fastened to the cabinet 11 and a speaker 12 coupled to the cabinet 11 is fixed to the lower portion. And a speaker fixing groove 13b formed so as to fasten a rod-shaped housing 12a formed integrally on the upper and lower portions of the speaker 12 is formed.

The unexplained reference numeral 13c is a through hole, 14b is a screw hole, and 15 is a screw.

The operation of the anti-howling structure of the multimedia monitor according to the present invention will now be described.

First, in the assembling process, a housing 12a integrally formed in a bar shape is fastened to upper and lower portions of a speaker 12 in a speaker fixing groove 13b formed in a lower portion of a damping holder 13 made of a urethane or rubber material The speaker 12 is fixed to the damping holder 13 and then a groove 13a radially formed on the front surface of the damping holder 13 is inserted into the radial coupling ribs 13a protruding from the upper and lower portions of the cabinet 11 The front face of the speaker 12 fixed by the damping holder 13 is brought into contact with the rib 11a protruding from the inner face of the cabinet 11 so that the speaker 12 is fixed to the cabinet 11a, 11).

At this time, the rear sound source 14 is brought into close contact with the rear surface of the cabinet 11 and the speaker 12 coupled by the damping holder 13, and then the screw hole 14b, which is formed on the rear surface of the rear sound source 14, The screw 15 passing through the screw hole 14b is fastened to the fastening hole 11b of the cabinet 11 through the through hole 13c of the damping holder 13, The coupling between the cabinet 11 and the loudspeaker 12 and the damping holder 13 and the rear phalanx 14 are finally completed and at the same time the complete fixing is achieved irrespective of the fixed form of the cabinet and the form of the dome acoustic barrel.

Therefore, when the vibration of the speaker 12 is moved in the direction of the arrow P as shown in FIG. 5, the damping holder 13, to which the speaker 12 is fixed, 6, the screw 15 is moved in the direction of the arrow C (C) (D) within the range of the clearance A (B) Which is the center of the 'High Government'.

In other words, since it is a trajectory of the arrow direction C (D) to rotate by the turning radius R around the 'fixed portion', by changing the linear motion within the limited range to the limited rotational motion, The amplitude of about 60% is reduced. Therefore, the remaining vibration of the weakened amplitude is absorbed by the damping holder 13 made of rubber or urethane, and at the same time, an almost completely self-vibration absorption effect is obtained.

Here, the separation preventing rib 14a protruding from the inner center of the rear phalanx 14 may prevent the speaker 12 from falling due to dropping of the product wool or external sudden impact.

As described above, according to the present invention, by constructing a structure capable of absorbing the direct vibration of the speaker in all multimedia monitors to which the speaker is mounted, transmission of vibration to the Braun tube is blocked, and the howling, which is a trembling phenomenon of the image, is fundamentally prevented It has the effect of producing quality products that are proportional to the investment cost or productivity by improving productivity by cost reduction.

Claims (2)

A cabinet 11 which protrudes a rib 11a to which a speaker can be contacted on both inner side surfaces and a plurality of radially protruding locking ribs 11c protrude from upper and lower portions while a locking hole 11b is passed therethrough, A speaker 12 coupled to the cabinet 11 while integrally molding the processed rod-like housing 12a at the upper and lower portions thereof and a speaker 12 coupled to the coupling rib 11c of the cabinet 11, A damping holder 13 made of a urethane or rubber material for fixing the speaker 12 to the rear of the cabinet 11 and the speaker 12 coupled by the damping holder 13, And a rear sound box (14) protruding from the release preventing rib (14a). The damping holder according to claim 1, wherein a radial groove (13a) is formed in the front surface of the damping holder (13) so that a radial locking rib (11c) protruding from the upper and lower portions of the cabinet (11) And a speaker fixing groove 13b is formed in the upper and lower portions of the speaker 12 so as to fix the speaker 12 coupled to the speaker 12, Howling prevention structure of multimedia monitor.