JPH0733097U - Speaker box laminated structure - Google Patents

Abstract

(57) [Abstract] [Purpose] By eliminating the mutual influence of the sound generated by each speaker, the sound from each speaker can be eliminated.
To hear a beautiful sound. Configuration: A plurality of speaker boxes 1, 2, ... N are arranged in the vertical direction, and a space S is provided at least between the speaker boxes 1, 2, 2, 3 ... N-1 and n.
₁₂ , S ₂₃ ... S _{(n-1) n} are provided in the speaker box laminate structure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a laminated structure of speaker boxes, and more particularly to a laminated structure of speaker boxes in which cone speaker boxes widely used in stereos, televisions, radios and the like are separated and stacked.

[0002]

[Prior art]

 It is well known that the audible frequency, which is the frequency of the sound heard by the human ear, is generally about 20 Hz to 20 kHz. Therefore, it is desirable for the speaker to reproduce the original sound by maintaining a constant sound pressure, which is the pressure of the vibration of the air that is the source of the sound, over the entire audible frequency range. However, one speaker capable of reproducing the original sound while keeping the sound pressure constant over the entire audible frequency has not yet appeared. For example, with one speaker, the sound pressure in the high-pitched part of the audible frequency fluctuates, and conversely, the sound pressure in the low-pitched part of the audible frequency fluctuates, and a reproduced sound that is faithful to the original sound cannot be obtained. No sound can be heard by the listener. Therefore, it has been attempted to reproduce the original sound while keeping the sound pressure constant over the entire audible frequency by combining several speakers. For example, as shown in FIG. 6, a high-frequency speaker 200, a medium-frequency speaker 300, and a low-frequency speaker 400 are incorporated into one box 100 to form a so-called 3Way speaker box. With this structure, the high-pitched sound portion, the middle-pitched sound portion, and the low-pitched sound portion of the audible frequency are shared by the high-pitched speaker 200, the middle-tone speaker 300, and the low-pitched speaker 400, respectively, and are faithful to the original sound as much as possible. I try to get the playback sound.

[0003]

[Problems to be solved by the device]

However, the above conventional technique has the following problems. (1) As shown in FIG. 7A, the sound emitted from the speaker 200 and the sound emitted from the speaker 300 overlap and interfere with each other, and an interference wave K1 is generated. Further, the sound emitted from the speaker 300 and the sound emitted from the speaker 400 overlap and interfere with each other, and an interference wave K2 is generated. Moreover, the interference waves K1 and K2 are reflected by the front surface of the speaker box 100. Therefore, the sounds produced by the speakers 200, 300, 400 themselves and the interference waves K1, K2 are mixed, and the entire sound is muffled in the vicinity of the speaker box 100. (2) Further, as shown in FIG. 7B, the sound A ₂₃ emitted from the speaker 200 enters the speaker 300 immediately below and vibrates the cone, and the sound A ₃₂ emitted from the speaker 300 is It goes into the speaker 200 directly above and vibrates the cone. As a result, a sound different from the sound produced by the speakers 200 and 300 themselves is generated and reflected by the front surface of the speaker box 100. Similarly, the sound A ₃₄ emitted from the speaker 300 enters the speaker 400 immediately below and vibrates the cone, and the sound A ₄₃ emitted from the speaker 400 enters the speaker 300 immediately above and the cone A Vibrate. As a result, a sound different from the sound produced by the speakers 300 and 400 themselves is generated and reflected on the front surface of the speaker box 100. Therefore, the sounds produced by the speakers 200, 300, and 400 themselves and the different sounds are mixed, and the entire sound is muffled in the vicinity of the speaker box 100. An object of the present invention is to eliminate the mutual influence of the sounds generated by the speakers so that the sounds from the speakers can be eliminated and to hear a clean sound.

[0004]

[Means for Solving the Problems]

The above problem is that a plurality of speaker boxes 1, 2, ... N are arranged in the vertical direction, and a space is provided at least between the speaker boxes 1, 2, 2, 3 ... N-1 and n. This is solved by the laminated structure of the speaker box, which is characterized in that S ₁₂ , S ₂₃ ... S _{(n-1) n} are provided.

[0005]

[Action]

As described above, according to the present invention, the air gaps S ₁₂ , S ₂₃ ... S _{(n-1) n} are provided between the speaker boxes 1 and 2, 2 and 3 ... n-1 and n. Provided (FIG. 1). According to this configuration, the sounds A2, A3, ..., Emitted from the speakers 1A, 2A ... nA escape through the voids S ₁₂ , S ₂₃ ... S _{(n-1) n} (FIG. 5 ₎ . ). Therefore, as in the conventional case (FIG. 7), neither interference (FIG. 7A) nor different sound (FIG. 7B) occurs. For this reason, the sound will not be muffled and will come out, and you will be able to hear a much cleaner sound than before.

[0006]

【Example】

 Hereinafter, the present invention will be described with reference to the accompanying drawings by way of embodiments. FIG. 2 is a view showing a first embodiment of the present invention. FIG. 2A is an example of a laminated structure of a 3-way speaker box, in which the gap forming means 12 is provided between the speaker boxes 1 and 2, the gap forming means 23 is provided between the speaker boxes 2 and 3, and the speaker box 3 is shown. The case where the space forming means 310 is installed between the floor surface 10 and the floor surface 10 is shown. The void forming means 12, 23, 310 all have the same structure, and FIG. 2B is a detailed view of the void forming means 12. The space forming means 12 has a rectangular parallelepiped shape as a whole, and an upper plate 125 and a lower plate 123 thereof have substantially the same size corresponding to the upper part and the lower part of each speaker box 1, 2, 3. As shown in the drawing, rectangular openings 121, 122, 123, and 124 are provided on the side surface of the gap forming means 12 in FIG. 2B so that the sounds emitted from the speakers 1A and 2A can easily escape. (Fig. 5). The speakers 1A, 2A, 3A and the front surfaces of the corner speaker boxes 1, 2, 3 are not so different in area so that sounds emitted from the speakers 1A, 2A, 3A are not reflected. The same applies to the following second to fourth embodiments shown in FIGS. 3 to 5.

FIG. 3 is a diagram showing a second embodiment of the present invention. As in the case of FIG. 2A, the void forming means of FIG. 3, for example, reference numeral 12, is inserted between the speaker boxes 1 and 2, 2 and 3, and between the speaker box 3 and the floor surface 10, Although the speaker box has a laminated structure, it is different from the void forming means 12 of FIG. 2B in that the height dimension H can be adjusted. That is, as shown in FIG. 3 (A), the gap forming means 12 includes an upper plate 12A and a lower plate 12B, and bolts 12C, 12D and the like and nuts 12G which are members for connecting them and adjusting the height. , 12H, etc.

FIG. 3B is a view showing a connecting structure of the upper plate 12A and the lower plate 12B, and the bolt 12DF and the nut 12H are shown as the connecting means. A bolt 12D is fixedly mounted on the lower plate 12B, and a hexagon nut 12H is screwed onto the bolt 12D. A round hole 12A2 is formed in the upper plate 12A, and a bolt 12D penetrates the hole 12A2. Therefore, as shown in FIG. 3 (A), the upper plate 12A is placed on the nut 12G such as the bolt 12C fixed to the lower plate 12B through the hole 12A1 and the nut 12G. By rotating the etc., the height dimension H between the upper plate 12A and the lower plate 12B can be adjusted.

FIG. 4 is a diagram showing a third embodiment of the present invention. The space forming means shown in FIG. 4 is composed of a column 20 standing on the floor 10 and fixtures 30, 40, 50 that move up and down along the column 20. As shown in FIG. 4 (A), the pillar 20 is provided with a base 20A at the bottom thereof, and when the base 20A is placed on the floor surface 10, it stands upright. The cross section of the pillar 20 is, for example, rectangular, and the fittings 30, 40, and 50 having a shape corresponding to the rectangular shape are attached to the pillar 20 so as to be vertically movable. The structures of these mounting tools 30, 40, 50 are all the same, and the mounting tool 30 is shown as an example in FIG. 4 (B) and FIG. 4 (C).

The fixture 30 includes a square tube 30B surrounding the support column 20 and a support rod 30A, and the speaker box 1 is fixed to the support rod 30A (FIG. 4A). A screw hole 30D is formed on the square cylinder 30B on the side opposite to the support rod 30A, and a bolt 30C is screwed into the screw hole 30D from the outside (FIG. 4C). ). With this configuration, if the bolt 30C is tightened, the bolt 30C can abut the back surface 20A of the column 20 to fix the fixture 30, and conversely, if the bolt 30C is loosened, the bolt 30C can be fixed. The attachment 30 can be moved up and down away from the back surface 20A of the column 20. The relationship between the column 20 and the fixture 30 is the same for the other fixtures 40 and 50. Therefore, when the bolt 30C or the like is rotated, the space S between the speaker boxes 1 and 2 is ₁₂ Height dimension H₁₂, The space S between the speaker boxes 2 and 3_{twenty three}Height dimension H_{twenty three}, The space S between the speaker box 3 and the floor surface S₃₁₀Height dimension H₃₁₀Can be adjusted respectively (FIG. 4 (A)).

FIG. 5 is a view showing a fourth embodiment of the present invention. Unlike the case of FIGS. 2 to 4, the gap forming means 12, 23, and 310 of FIG. 5 constitute a speaker box laminated structure by stacking the gap forming means themselves. That is, as shown in FIG. 5B, for example, the space forming means 12 is composed of side plates 12a and 12b, and a horizontal plate 12c that straddles both side plates. As shown in FIG. 5 (A), the side plates 12a and 12b have a function of stacking vertically, and the horizontal plate 12c has a function of placing the speaker box 1 thereon. The horizontal plate 12c may be fixed to the side plates 12a and 12b, or the position thereof may be adjusted with screws or the like.

As shown in FIG. 5A, the space forming means 12 and the like are stacked to form a space between the speaker boxes 1 and 2, 2 and 3, and between the speaker box 3 and the floor surface 10. S ₁₂ , S ₂₃ and S ₃₁₀ are provided.

The operation of the present invention having the above configuration will be described below with reference to FIG. As shown in the drawing, using any of the gap forming means shown in FIGS. 2 to 5, the gap S ₁₂ between the speaker boxes 1 and 2, the gap S ₂₃ between the speaker boxes 2 and 3, the speaker box 3 and the floor 10 are used. And voids S ₃₁₀ are provided respectively. First, the sound A1 that upward from the speaker. 1A, in a conventional manner through the space between the ceiling, relief, sound A2, downward from the speaker 1A escapes through the gap S _12. Also, the sound A3 which upward from the speaker. 2A, escape through the gap S _12, the sound A4 that downward from speaker 2A escapes through the gap S _23. Furthermore, the sound A5 which upward from the speaker. 3A, escape through the gap S _23, the sound A6 that downward from speaker 3A escapes through the gap S _310. Therefore, unlike in the past, the sound was cut off and a clearer sound could be heard.

[0014]

[Effect of device]

As described above, according to the present invention, a plurality of speaker boxes 1, 2, ... N are arranged in the vertical direction, and at least the speaker boxes 1, 2, 2, 3 ... N-1 and n. , A void S ₁₂ , S ₂₃ ... S _{(n-1) n} is provided between the two. According to this configuration, the sounds A2, A3, ..., Emitted from the speakers 1A, 2A ... nA escape through the voids S ₁₂ , S ₂₃ ... S _{(n-1) n} (FIG. 6 ₎ . ). Therefore, as in the conventional case (FIG. 7), neither interference (FIG. 7A) nor different sound (FIG. 7B) occurs. As a result, the sound becomes muffled and can be lost, and you can hear a much cleaner sound than before. In other words, by eliminating the mutual influence of the sounds generated by each speaker, the sound from each speaker can be eliminated, and the technical effect of being able to hear a clean sound is achieved.

[0015]

[Brief description of drawings]

FIG. 1 is a principle view of the present invention.

FIG. 2 is a diagram showing a first embodiment of the present invention.

FIG. 3 is a view showing a second embodiment of the present invention.

FIG. 4 is a view showing a third embodiment of the present invention.

FIG. 5 is a view showing a fourth embodiment of the present invention.

FIG. 6 is an explanatory view of the operation of the present invention.

FIG. 7 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

1,2 ··· n-1, n speaker box _{S 12, S 23 ··· S (} n-1) n void

Claims (1)

[Scope of utility model registration request] 1. A plurality of speaker boxes 1, 2, ...
n are arranged in the vertical direction, and the gaps S ₁₂ , S ₂₃ ... S _{(n-1) n} are provided at least between the speaker boxes 1 and 2, 2 and 3 ... n-1 and _n. A laminated structure of a speaker box, which is provided with.