JPH08126087A - Horn speaker support device - Google Patents

Abstract

PURPOSE: To improve the workability with compact configuration by fixing a horn speaker and a cabinet to both ends of an elastic rib with a connection boss having a mount part so as to attenuate the vibration of the speaker. CONSTITUTION: A connection boss 7 having a boss 7b to be fitted to both ends of an elastic rib 7a and a mount hole 7c is provided to an upper and lower as one pair to fix a horn panel 2 and a font cabinet 3, the forward/backward vibration of the speaker 1 changes its direction by the rib 7a to attenuate the propagation of the forward/backward vibration of the speaker 1 to the front cabinet 3 and a buffer material 10 provided to a tip of the horn panel 2 attenuates the changed vibration. Thus, the forward/backward displacement of the horn panel 2 is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a horn speaker holding device in a television receiver or a display monitor.

[0002]

2. Description of the Related Art In recent years, in a television receiver, a speaker device having a horn panel having a vertically long rectangular opening in the front part (hereinafter referred to as a horn speaker) is used to minimize the total width of a set. Products that have become mainstream, but even in display monitors, products with stereo speakers are appearing, and horn speakers are used.

A conventional horn speaker mounting structure for a television receiver comprises a speaker 1, a horn panel 2, a front cabinet 3, a CRT 4 and a screw 5 as shown in the perspective view of the main part of FIG. The horn panel is fixed to the horn panel 2 with screws 1a or the like to form a horn speaker, and the pair of mounting bosses 3a provided on the upper and lower sides of the front cabinet 3 are fitted with the mounting fixing holes 2a provided on the side surfaces of the horn panel 2. The horn speaker was fixed with a screw 5 in the gap between the CRT 4 and the inner surface of the front cabinet 3. Further, when the screw 5 is attached, a structure for absorbing the longitudinal vibration of the horn speaker through a vibration-proof rubber or the like (not shown) is adopted.

[0004]

Since the screen resolution of the display monitor is several times higher than that of the television receiver, the resonance phenomenon of the shadow mask portion of the CRT 4 occurs in the low frequency band. When the resonance phenomenon occurs, a stripe-shaped screen distortion called microphony occurs on the screen, and the screen quality as a display monitor that attaches importance to a still screen is significantly impaired.

In the conventional speaker device mounting structure, even if a vibration-proof rubber or the like is used when mounting the screw 5, the rate of damping the vibration in the low frequency band is limited, and in order to secure the damping rate. It is necessary to increase the volume of the anti-vibration rubber or to use gel-like rubber, which results in waste of spacing that absorbs large vibrations in the front-rear direction, resulting in poor position stability and cost reduction. There was a problem of becoming expensive.

In view of the above problems, the present invention intends to provide a mounting structure for a horn speaker holding device, which efficiently absorbs vibrations in this low frequency band by a connecting boss, has good assembly workability, and is low in cost. To do.

[0007]

The mounting structure of the horn speaker holding device according to the present invention has a structure in which a connecting boss having an elastic structure for converting the vibration direction is interposed between the mounting parts of the horn speaker and the front cabinet. Is characterized by.

[0008]

According to the present invention, the spacing for mounting the connecting boss can be realized by extending the mounting portions of the horn speaker and the front cabinet in the front-rear direction, and it is not necessary to increase the lateral width of the entire set. Moreover, it is not necessary to use a gel-like part that requires a large clearance in the front-rear direction, which is poor in workability. Therefore, the workability in assembling is good and the cost can be reduced.

The vibration generated from the speaker, particularly the vibration in the front-back direction, is converted into a component in the perpendicular direction by the connecting boss to be attenuated, and is absorbed by the cushioning material attached to the side surface of the front cabinet.

[0010]

1 is a perspective view showing the structure of a horn speaker mounting apparatus according to an embodiment of the present invention, and FIG. 2 is a horizontal sectional view of a connecting boss portion shown in FIG. 1 and 2, reference numeral 1 denotes a speaker, which is fixed to a horn panel 2 with a screw 1a to form a horn speaker. A front cabinet 3 has a pair of horn speaker mounting bosses 3a at its upper and lower portions. This mounting boss 3a
In contrast to the above, the horn panel 2 has a mounting fixing hole 2a, is provided with a space into which the connecting boss 7 is inserted, and is provided with another first mounting fixing hole 2b parallel to the mounting fixing hole 2a. .

As shown in FIG. 2, the connecting boss 7 has an elastic rib 7a between the mounting boss 3a and the mounting fixing hole 2a, and the boss 7b is fitted to both ends of the rib 7a so as to fit the mounting fixing hole 2b.
And a mounting hole 7c is provided in accordance with the mounting boss 3a. In order to facilitate the positioning with the mounting boss 3a, the mounting hole 7c is provided with a rib 7d so as to enclose the inlet portion of the mounting boss 3a, and is fixed with the screw 5. that time,
The guide boss 7e is provided to ensure the workability of mounting the screw 5. The tip portion of the boss 7b penetrates the mounting fixing hole 2b, and a vibration-proof rubber 8 is provided so as to fill this gap, and the horn panel 2 and the connecting boss 7 are fixed by the screw 6, but the screw 6 and the mounting fixing are fixed. An anti-vibration rubber 9 is provided between the holes 2b so as to penetrate the tip portion of the boss 7b to directly avoid contact between the horn panel 2 and the connecting boss 7 via the screw 6 to attenuate vibration transmission. This structure is provided for each pair of upper and lower horn speakers.

Next, the vibration of the speaker 1 will be described. Although the vibration direction of the speaker 1 is the Z direction in FIG. 2, the vibration component which cannot be completely absorbed by the vibration-proof rubbers 8 and 9 is changed to the Y direction by the rib 7a. Substitute in direction. Rib 7
By providing f and 7g between the rib 7a and the guide boss 7e and the boss 7b to adjust the natural frequency of the rib 7a, it is possible to control the vibration transmission component effective for preventing microphony. Y
The vibration component displaced in the direction is transmitted to the tip portion of the horn panel 2 with the mounting hole 7c as a fulcrum,
The cushioning material 10 provided at the tip end of the CRT 4 absorbs between the CRT 4 and the front cabinet 3.

According to such a construction, it is not necessary to make the anti-vibration rubbers 8 and 9 correspond to a low frequency band, a compact and inexpensive construction can be taken, and the assembling workability is improved.

Although the mounting and fixing hole 2a is provided to secure the rigidity of vibration applied to the mounting and fixing hole 2b, the mounting and fixing hole 2a is not necessary as long as the output range of the speaker 1 can secure the strength. Further, the vibration proof rubbers 8 and 9 are not necessary unless the occurrence of microphonies is of concern in the frequency band absorbed by the vibration proof rubbers 8 and 9.

[0015]

As described above, according to the mounting structure of the horn speaker holding device of the present invention, the constituent parts are inexpensive and have good workability, and it is possible to take countermeasures against microphony and take a compact structure. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part showing a configuration of a horn speaker mounting device according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of a connection boss portion of FIG.

FIG. 3 is a perspective view of an essential part showing an example of a conventional horn speaker mounting structure.

[Explanation of symbols]

1 ... Speaker, 1a, 5, 6 ... Screw, 2 ... Horn panel, 2a, 2b ... Fixing hole, 3 ... Front cabinet, 3a ... Mounting boss, 4 ... CRT, 7 ... Connection boss, 7a, 7d, 7f , 7g ... rib, 7b ... boss,
7c ... Mounting hole, 7e ... Guide boss, 8, 9 ... Anti-vibration rubber, 10 ... Buffer material.

Claims (1)

[Claims] 1. Absorption of vibration by providing mounting portions at both ends of an elastic rib substantially at right angles to the elastic direction and fixing one end to a horn speaker and the other end to a cabinet to replace the speaker's vibration direction at a substantially right angle. A horn speaker holding device having a pair of upper and lower connecting bosses.