HIFI sound box structure with characteristic of eliminating low-frequency resonance

Abstract

The utility model discloses a HIFI sound box structure capable of eliminating low-frequency resonance, which comprises a sound box main body formed by loudspeaker main bodies and a noise filtering assembly, the noise filtering assembly comprises filtering plates arranged among the loudspeaker main bodies, the filtering plates are connected with the end parts of the loudspeaker main bodies through rotating shafts, two ends of the rotating shafts are provided with fixing plates for fixing, and the fixing plates are connected with the loudspeaker main bodies through the rotating shafts. The filter plate comprises an outer frame plate, a cavity is formed in the outer frame plate, the cavity is filled with wave-absorbing cotton, and the size of the filter plate is the same as that of the loudspeaker body. The HIFI sound box solves the problem that the HIFI sound box in the prior art is easy to be interfered by low-frequency wave diffraction resonance so as to generate noise.

Description

Technical Field

[0001] The utility model relates to the field of speaker structures, and particularly to a Hi-Fi speaker structure with the characteristic of eliminating low-frequency resonance. Background Art

[0002] Hi-Fi is the abbreviation of English High-Fidelity, which is directly translated as "high-fidelity". Its definition is: the reproduced sound that is highly similar to the original sound. To judge the high-fidelity degree of the reproduced sound, not only excellent equipment and software are required, but also a good listening environment.

[0003] At present, there are many brands of Hi-Fi speakers on the market. They have different shapes and slightly different listening experiences. One of the problems that affect the listening experience of such Hi-Fi speakers is the noise (hiss, distortion) caused by low-frequency resonance. Especially when such noise exists in clear music rhythms, it is very obtrusive and greatly affects the listening experience. The reason for low-frequency resonance is the lack of effective isolation between low-frequency waves, and due to the characteristics of low-frequency waves, they are particularly prone to diffraction interference with each other.

[0004] In view of this, this technical solution proposes a Hi-Fi speaker structure with the characteristic of eliminating low-frequency resonance. By adopting a semi-open isolation structure, the low-frequency waves are blocked, which neither destroys the normal sound field nor effectively blocks and weakens the diffraction resonance of the low-frequency waves. The overall structure is simple, can be instantaneously expanded and used according to actual needs, and is easy to install and maintain. Summary of the Utility Model

[0005] The technical solution of the utility model aims to solve at least one of the technical problems in the related technologies to some extent. For this reason, the main purpose of the utility model is to provide a Hi-Fi speaker structure with the characteristic of eliminating low-frequency resonance, aiming to solve the problem that the Hi-Fi speaker in the existing technology is easily interfered by the diffraction resonance of low-frequency waves and generates noise.

[0006] To achieve the above purpose, the utility model provides a Hi-Fi speaker structure with the characteristic of eliminating low-frequency resonance, including a speaker main body composed of each speaker main body and a noise filtering component.

[0007] The noise filtering component includes a filter board arranged between each speaker main body. The filter board is rotationally connected to the end of the speaker main body by a rotating shaft, and fixing plates for fixing are arranged at both ends of the rotating shaft. The filter board includes an outer frame board, a cavity is formed inside the outer frame board, absorbent cotton is filled in the cavity, and the size of the filter board is the same as that of the speaker main body.

[0008] As a further solution of the present utility model, the speaker bodies are arranged in a surrounding array, and at least two speaker units are arranged side by side on one side, and each speaker unit is correspondingly provided with one of the filter plates.

[0009] As a further solution of the present utility model, one end of the filter plate is further connected with a baffle that can be opened and closed.

[0010] As a further solution of the present utility model, the number of the absorbent cotton in the cavity is at least two layers.

[0011] As a further solution of the present utility model, the two layers of the absorbent cotton are both compacted through a pressing layer on the outside, and a fixing layer that is closely attached to the inner wall of the outer frame plate is arranged on the outside of the pressing layer.

[0012] As a further solution of the present utility model, clamping grooves for fixing the pressing layer, the fixing layer and the absorbent cotton are respectively opened at the upper and lower ends of the outer frame plate.

[0013] As a further solution of the present utility model, the fixing layer and the pressing layer are connected through an adhesive.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The HIFI speaker structure with the characteristic of eliminating low-frequency resonance proposed by the present utility model realizes the low-frequency noise filtering effect between adjacent speaker units through the rotatable noise filtering component of the speaker main body part arranged on the speaker main body. And this noise filtering component is a rotatable structure, and can be adaptively adjusted for opening and rotation angle according to actual use requirements. In addition, the noise filtering component can be rotated to an outward-expanded structure to keep the sound field of the speaker unit and not weaken the original sound field. The overall structure is simple, and all adopt mechanical connection structures to achieve blocking and noise filtering, which is easy to assemble, replace and maintain. Description of the Drawings

[0016] In order to more clearly illustrate the embodiments of the technical solutions of the present utility model or the technical solutions of the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the technical solutions of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the speaker main body and the noise filtering component in the present utility model.

[0018] Figure 2 It is a schematic diagram of the settings of the various components of the speaker main body and the noise filtering component in the present utility model.

[0019] Figure 3 Schematic diagram of the layers of the filter board in the present utility model.

[0020]

Description of the reference numerals of the main components / assemblies

[0021] Label Name Label Name 1 Speaker main body 212 Absorbing cotton 10 Speaker body 213 Cavity 2 Noise filtering component 214 Pressing layer 20 Fixed plate 215 Fixing layer 21 Filter board 22 Rotating shaft 210 Outer frame board 24 Baffle 211 Card slot Specific embodiments

[0022] As follows:

[0023] Please refer to the attached Figure 1-3 ,

[0024] The main structure includes a speaker main body 1 composed of each speaker main body 10 and a noise filtering component 2. The noise filtering component 2 includes a filter board 21 disposed between each speaker main body 10. The filter board 21 is connected to the end of the speaker main body 10 by a rotating shaft 22, and fixing plates 20 for fixing are provided at both ends of the rotating shaft 22. The filter board 21 includes an outer frame board 210. A cavity 213 is formed inside the outer frame board 210. Absorbing cotton 212 is filled inside the cavity 213. The size of the filter board 21 is the same as that of the speaker main body.

[0025] The working principle is as follows:

[0026] During use, each filter board 21 between the speaker main bodies 10 is opened to an outward-expanded state (which is conducive to the sound spreading out) through the rotating shaft 22. Since the absorbing cotton 212 is filled in the filter board 21, the low-frequency interference between two adjacent speaker main bodies 10 can be blocked, thereby playing a role in weakening the diffraction resonance of the low-frequency wave. Since a semi-open noise filtering structure is adopted, the original sound field will not be damaged and the listening experience will not be affected. The overall structure does not use electronic noise filtering for filtering, but uses a pure mechanical structure, and there is no need to set complex acoustic absorption corrugations on the surface of the speaker main body 1.

[0027] A preferred embodiment in the present utility model: The speaker main bodies 10 are arranged in a four-sided array, and at least 2 speaker units are arranged side by side on one side. Each speaker unit is correspondingly provided with a filter board 21.

[0028] It is particularly suitable for four-sided HiFi speakers, and the filter board 21 corresponds to the size of each speaker main body 10 and realizes complete closed protection when closed.

[0029] A preferred embodiment in the present utility model: One end of the filter board 21 is also connected with a baffle 24 that can be opened and closed.

[0030] The provided baffle 24 that can be opened and closed is used to extend the blocking range and is suitable for noise filtering in a large-range sound field such as classical music.

[0031] A preferred embodiment in the present utility model: The number of layers of the absorbing cotton 212 in the cavity 213 is at least 2 layers.

[0032] The double-layer wave-absorbing cotton 212 can enhance the blocking effect and has more noise filtering characteristics compared with the single-layer structure.

[0033] A preferred embodiment of the present utility model: Both outer layers of the wave-absorbing cotton 212 are compacted through a pressing layer 214, and a fixing layer 215 that is tightly attached to the inner wall of the outer frame plate 210 is provided outside the pressing layer 214.

[0034] The provided fixing layer 215 is used to connect with the outer frame plate 210, and the way of adhesive can be adopted. The pressing layer 214 is an intermediate layer to realize the function of clamping the internal wave-absorbing cotton 212 by the fixing layer 215.

[0035] A preferred embodiment of the present utility model: Card slots 211 for fixing the pressing layer 214, the fixing layer 215 and the wave-absorbing cotton 212 are provided at both upper and lower ends of the outer frame plate 210.

[0036] The provided card slots 211 are used for installing each internal layer structure in layers.

[0037] A preferred embodiment of the present utility model: The fixing layer 215 and the pressing layer 214 are connected by adhesive. Double-sided adhesive can be used to connect the fixing layer 215 and the pressing layer 214.

[0038] The above are only the preferred embodiments of the technical solutions of the present utility model, and do not limit the patent scope of the technical solutions of the present utility model. Any equivalent structural transformation made under the concept of the technical solutions of the present utility model by using the description and drawings of the technical solutions of the present utility model, or any direct / indirect application in other related technical fields shall be included in the patent protection scope of the technical solutions of the present utility model.

Claims

1. A HIFI speaker structure with the characteristic of eliminating low-frequency resonance, characterized in that: include The speaker body and noise filtering components are composed of the speaker bodies. The noise filtering component includes a filter plate arranged between each of the speaker bodies, the filter plate is connected to the end of the speaker body by a rotating shaft, and fixing plates for fixing are provided at both ends of the rotating shaft, the filter plate includes an outer frame plate, a cavity is formed inside the outer frame plate, the cavity is filled with absorbing cotton, and the filter plate is the same size as the speaker body.

2. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 1, characterized in that: The speaker bodies are arranged in a four-sided array, and at least two speaker units are arranged side by side on a single side, and each speaker unit is correspondingly provided with a filter plate.

3. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 1, characterized in that: One end of the filter plate is also connected to a baffle that can be opened and closed.

4. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 1, characterized in that: The number of the absorbing cotton layers in the cavity is at least 2.

5. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 4, characterized in that: The exteriors of the two layers of the wave-absorbing cotton are compacted by a pressing layer, and a fixing layer is provided outside the pressing layer and is in close contact with the inner wall of the outer frame plate.

6. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 5, characterized in that: The upper and lower ends of the outer frame plate are provided with slots for fixing the pressing layer, the fixing layer and the absorbing cotton.

7. The HIFI speaker structure with low-frequency resonance elimination characteristics according to claim 5, characterized in that: The fixing layer and the pressing layer are connected by adhesive.

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