CN201001182Y

CN201001182Y - Integrated curve wooden rear casing sound box

Info

Publication number: CN201001182Y
Application number: CNU2006200626552U
Authority: CN
Inventors: 张兰洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-07
Filing date: 2006-08-07
Publication date: 2008-01-02
Anticipated expiration: 2016-08-07

Abstract

The utility model relates to a sound box with integrally formed curve wooden rear box body, which comprises a rear box body, an upper box body and a lower box body. The utility model is characterized in that the rear box body has the integrally formed structure, wherein the rear box body can be approximately U-shaped, approximately semicircular, door-shaped, or open mouthed trapezoid, and the rear box body can be made of wooden sandwich plates. Because the rear box body has the integrally formed structure, better acoustic quality is provided; the safe reliability during the operation is greatly improved, the service life is enhanced, simultaneously, the appearance modeling is diversified, and through different integrally formed shapes, models with various appearance structures can be realized.

Description

The wooden rear box audio amplifier of integrally formed curve

[technical field]

The utility model relates to a kind of sound equipment rear box that is suitable for large-scale occasion, the wooden rear box audio amplifier of particularly integrally formed curve.

[background technology]

Fig. 1 a is the loudspeaker box structure of prior art, as shown in Figure 1a, the rear box 2 of tradition shape audio amplifier comprises three wood based panels compositions at least, moreover in order to make body structure is firm, intensity good, inside has added a lot of wood strips 22, and Fig. 1 b is the frequency response curve figure of traditional audio amplifier, shown in Fig. 1 b, make the low-frequency sound wave energy that comes out after the guiding that bigger loss be arranged in casing because low-frequency sound wave repeatedly reflects in trapezoidal cabinet, weakened low-frequency effect.

From first acoustic angle, standing wave is that two opposite sound waves (incident wave and reflected wave) in the direction of propagation repeatedly reflect the result of stack in two parallel reflectings surface, and it is prevalent in traditional audio amplifier, and parallel surface is many more, and the standing wave of generation is many more.Fig. 2 a, Fig. 2 b, Fig. 2 c are the schematic diagram that traditional audio amplifier produces standing wave, as shown in Figure 2, and traditional audio amplifier, as six faces in its top to bottom, left and right, front and rear of square audio amplifier is to be parallel to each other, therefore the standing wave that produces is maximum, shown in Fig. 2 a, comprises the axial standing wave that two faces cause, shown in Fig. 2 b, the tangential standing wave that its four faces cause, shown in Fig. 2 c, the oblique standing wave that its six faces cause, in sum, the various standing waves of above-mentioned generation have had a strong impact on tonequality and sound articulation such as Fig. 1 b.

Wherein, another acoustic angle, interference be two row (or two row more than) have same frequency, identical direction of vibration with constant, the sound wave of phase difference intersects mutually, the phenomenon that makes sound wave strengthen or weaken.Sound wave can cause standing wave and comb filtering after producing and interfering, and makes both poor sound quality.Fig. 3 is the interference schematic diagram after the reflection of traditional audio amplifier, as shown in Figure 3, the inner sound wave of tradition shape audio amplifier is random in a jumble after reflection, be cross one another between the sound wave, interference is serious, these interference waves react on the cone back side again, cone is produced interfere, and make the audio amplifier frequency response curve a lot of very big peak valley, audio distortions occur, influence definition.

[summary of the invention]

At the problem of above-mentioned existence, the purpose of this utility model provides a kind of being used to and addresses the above problem, and sound is good, the audio amplifier that the sound clarity degree is high.

For realizing above-mentioned purpose, the wooden rear box audio amplifier of integrally formed curve comprises rear box and last lower box, it is characterized in that: the described rear box structure that is formed in one.

Described rear box can be roughly U-shaped, roughly semicircle, ∏ shape, uncovered trapezoidal.

Described rear box can be wooden filled board material.

Characteristics of the present utility model are:

1. because the rear box structure that is formed in one, its low-frequency sound wave does not almost have loss, and the standing wave of generation is few, reflection back major part be the parallel wave that is parallel to each other and interfere little, thereby the tonequality that provides;

2. owing to the utility model audio amplifier, adopting rear box is that one-shot forming is finished, and no seam, nothing are reinforced wood strip, and the casing mechanical strength is improved, and security reliability improves greatly in transporting and using, the raising in useful life.

3. reduced process complexity in process of production simultaneously, can obtain the assurance of product quality again, also reduced production cost, raised the efficiency.

4. appearance and modeling variation by integrated difformity, can realize the moulding of various appearances structure.

[description of drawings]

Fig. 1 a is the loudspeaker box structure figure of prior art;

Fig. 1 b is the frequency response curve figure of traditional audio amplifier;

Fig. 2 a, Fig. 2 b, Fig. 2 c are the schematic diagram that traditional audio amplifier produces axial, tangential and oblique standing wave;

Fig. 3 is the interference schematic diagram after the reflection of traditional audio amplifier;

Fig. 4 is first embodiment of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Fig. 4 a is the frequency response curve figure of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Fig. 5 is the schematic diagram that the wooden rear box audio amplifier of the integrally formed curve of the utility model produces standing wave;

Fig. 6 is the interference schematic diagram after the reflection of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Fig. 7 is second embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Fig. 8 is the 3rd embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Fig. 9 is the 4th embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model;

Figure 10 is the 5th embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model

[embodiment]

The utility model is further detailed structure, characteristics and the purpose of the wooden rear box audio amplifier of the integrally formed curve of the utility model below in conjunction with accompanying drawing.

Fig. 4 is first embodiment of the wooden rear box audio amplifier of the integrally formed curve of the utility model, as shown in Figure 4, the wooden rear box audio amplifier 10 of the integrally formed curve of the utility model comprises integrated U type rear box 11, after sound spread by described integrated U type rear box 11, the sound that guide pipe and speaker element (not shown) are sent spread towards periphery.

Fig. 4 a is the frequency response curve figure of the wooden rear box audio amplifier of the integrally formed curve of the utility model, shown in Fig. 4 a, because the integrally formed curve of the utility model is wooden, its inner no any wood strip, the low-frequency sound wave that comes out from guide pipe does not almost have loss, so just strengthened low-frequency effect, the bass dynamics increases.

Fig. 5 is the schematic diagram that the wooden rear box audio amplifier of the integrally formed curve of the utility model produces standing wave, as shown in Figure 5, the wooden rear box audio amplifier of the integrally formed curve of the utility model is parallel owing to having only upper and lower surfaces, have only the axial wave of 1/3 traditional shape audio amplifier to produce, and do not have tangential standing wave and oblique standing wave to produce, therefore this curve rear box audio amplifier has reduced the standing wave of box house to greatest extent on the both artistic and practical basis of outward appearance, has improved tonequality.

Fig. 6 is the interference schematic diagram after the reflection of the wooden rear box audio amplifier of the integrally formed curve of the utility model, as shown in Figure 6, the utility model box house sound wave major part after reflection is the parallel wave that is parallel to each other, reduced to greatest extent between the box house sound wave mutual interference and to the interference at the cone back side, make the frequency response curve relatively flat that becomes, improved tonequality and sound articulation.

Fig. 7 is second embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model, and as shown in Figure 7, its rear box can be roughly U-shaped.

Fig. 8 is the 3rd embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model, and as shown in Figure 8, its rear box can be roughly semicircle.

Fig. 9 is the 4th embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model, and as shown in Figure 9, its rear box can be ∏ shape.

Figure 10 is the 5th embodiment of the rear box of the wooden rear box audio amplifier of the integrally formed curve of the utility model, and as shown in figure 10, its rear box can be uncovered trapezoidal.

Because its shape can be unequal to lifting thoroughly, this enumerates no longer one by one again.

Wherein, rear box can be wooden sandwich board making, and its weight ratio particieboard, MDF etc. are all light.

As mentioned above, advantage of the present utility model is:

1. because rear box 11 structure that is formed in one, its low-frequency sound wave does not almost have loss, and the standing wave of generation is few, reflection back major part be the parallel wave that is parallel to each other and interfere little, thereby the tonequality that provides;

2. because the utility model audio amplifier, adopt and its rear box 11 is that one-shot forming is finished, no seam, there is not the wood strip of reinforcing, the casing mechanical strength is improved, security reliability improves the raising in useful life greatly in transportation and in using.

4. appearance and modeling variation by integrated difformity, to Figure 10 difformity, can realize the moulding of various appearances structure as Fig. 6 like this.

The above person is the utility model most preferred embodiment only, is not to be used to limit scope of the present utility model, and all equivalences of being done according to the utility model claim change or modify, and are all the utility model and contain.

Claims

1, the wooden rear box audio amplifier of integrally formed curve comprises rear box and last lower box, it is characterized in that: the described rear box structure that is formed in one.

2, the wooden rear box audio amplifier of integrally formed curve according to claim 1, it is characterized in that: described rear box can be U-shaped.

3, the wooden rear box audio amplifier of integrally formed curve according to claim 1, it is characterized in that: described rear box can be semicircle.

4, the wooden rear box audio amplifier of integrally formed curve according to claim 1, it is characterized in that: described rear box can be П shape.

5, the wooden rear box audio amplifier of integrally formed curve according to claim 1, it is characterized in that: described rear box can be uncovered trapezoidal.

6, according to the wooden rear box audio amplifier of any one described integrally formed curve of claim 1 to 5, it is characterized in that: described rear box can be wooden filled board material.