Sound production and pickup device

Abstract

The invention discloses a sound production and pickup device, and relates to the field of acoustic equipment, the sound production and pickup device comprises a shell, the shell is cylindrical, and the front surface of the shell is provided with a sound outlet hole or a sound outlet groove; the sound source is embedded in the front face of the shell, the back face of the sound source is located in the shell, and the front face of the sound source faces the exterior of the shell; a spiral channel is further arranged in the shell, back sound waves emitted by the back of the sound source are transmitted to the sound outlet hole after passing through the spiral channel, and the back sound waves and forward sound waves emitted by the front face of the sound source are intersected and coupled together after passing through the sound outlet hole. The sound production and pickup device provided by the invention is simple in structure, can effectively improve the electro-acoustic conversion efficiency and sound energy, and improves the holographic reduction degree of sound information at the same time.

Description

Technical Field

[0001] The present invention relates to the field of acoustic equipment, and in particular to a sound generating and picking up device. Background Art

[0002] Traditional sound-generating and sound-picking devices, such as loudspeakers, are sound-generating and sound-picking devices with very low sound efficiency. The sound efficiency can be improved by installing them in a sound box. The theoretical basis of traditional sound box design is the Infinite Baffle theory, that is, an infinite baffle is placed between the forward and backward sound waves of the loudspeaker diaphragm to block the forward and backward sound waves so as to prevent the two from canceling each other out in the air; but since the infinite baffle is difficult to make infinitely large, the infinite baffle is folded toward the direction of the backward sound waves of the loudspeaker to form an enclosed space, blocking the backward sound waves of the loudspeaker and completely releasing the energy of the forward sound waves of the loudspeaker, thereby obtaining the basic structure of a modern sound box.

[0003] Since the structural design of modern speakers is based on the infinite baffle theory, the theoretical basis of which is to suppress the back sound waves of the speaker, the speakers in the prior art are equivalent to single-sided sound devices. However, the vibration of the diaphragm of the speaker itself produces two-way sound waves in the forward and backward directions. However, since the closed speaker shields the energy of the back sound waves of the speaker, this causes a great loss of the speaker's sound energy. Therefore, the sound energy and efficiency of the speaker in the modern sound design system are very low. Therefore, how to effectively utilize the back sound waves of the speaker and improve the sound energy and efficiency of the speaker has become a difficult problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a sound generating and sound picking device to solve the problem of low sound generating efficiency of the existing sound generating and sound picking devices.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a sound emitting and picking up device, comprising:

[0007] A housing, wherein a sound outlet hole or a sound outlet groove is provided on the front side of the housing;

[0008] A sound source, wherein the sound source is embedded in the front side of the shell, the back side of the sound source is located inside the shell, and the front side of the sound source faces the outside of the shell;

[0009] A spiral channel is also provided inside the shell, and the backward sound waves emitted from the back of the sound source are transmitted to the sound outlet hole after passing through the spiral channel, and are intersected and coupled with the forward sound waves emitted from the front of the sound source after passing through the sound outlet hole.

[0010] Preferably, the sound outlet holes are provided in plurality and are evenly distributed on the shell in a circular shape.

[0011] Preferably, the sound source is arranged at a central position of the front side of the shell.

[0012] Preferably, a spiral curved partition is installed inside the shell, and the spiral curved partition cooperates with the front and back surfaces of the shell to form the spiral channel.

[0013] Preferably, the outer end of the spiral curved partition is in contact with the side circumferential surface of the shell.

[0014] Preferably, the shell is composed of a cylinder and a back plate, the back plate is threadedly connected to the cylinder, and a groove for limiting the spiral curved partition is formed on the back plate.

[0015] Preferably, the shape of the back plate includes a flat plate or a bowl-shaped concave plate.

[0016] Preferably, the sound source is a speaker, a tympanic membrane, a sound board, a sound-generating body or a vibrating body made of other materials.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The present invention constructs a spiral channel in a shell by means of a spiral curved partition, opens a sound outlet hole or a sound outlet groove on the front side of the shell, and embeds a sound source in the front center of the shell, so that the back sound wave emitted from the back of the sound source advances along the spiral channel in the shell, and passes through the sound outlet hole on the outside of the spiral channel and intersects and couples with the forward sound wave emitted from the front side of the sound source, thereby effectively improving the electroacoustic conversion efficiency and sound energy, and at the same time improving the holographic restoration degree of the sound information. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the sound-generating and sound-collecting device of the present invention;

[0021] Figure 2 It is a front view of the sound-generating and sound-collecting device of the present invention;

[0022] Figure 3 It is a side view of the sound-generating and sound-collecting device of the present invention;

[0023] Figure 4 It is a front view of the back plate of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the sound-generating and sound-collecting device of the present invention;

[0025] Figure 6It is a schematic diagram of the spiral curved partition structure of the present invention.

[0026] Explanation of the reference numerals: 1. Shell; 2. Sound source; 11. Sound outlet hole; 12. Spiral curved partition; 13. Cylinder; 14. Back plate; 141. Groove. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1-6 As shown, a sound emitting and picking-up device comprises:

[0029] A housing 1, wherein a sound outlet hole 11 or a sound outlet slot is provided on the front side of the housing 1;

[0030] A sound source 2, wherein the sound source 2 is embedded in the front side of the housing 1, the back side of the sound source 2 is located inside the housing 1, and the front side of the sound source 2 faces the outside of the housing 1;

[0031] A spiral channel is also provided inside the shell 1, and the backward sound waves emitted from the back of the sound source 2 are transmitted to the sound outlet 11 after passing through the spiral channel, and are intersected and coupled with the forward sound waves emitted from the front of the sound source 2 after passing through the sound outlet 11.

[0032] The shape of the housing 1 includes a columnar shape, a frame shape or other shapes.

[0033] Specifically, a plurality of sound outlet holes 11 are provided and are evenly distributed on the housing 1 in a circumferential manner.

[0034] Specifically, the sound source 2 is arranged at the center position of the front side of the housing 1 .

[0035] Specifically, a spiral curved partition 12 is installed inside the shell 1, and the spiral curved partition 12 cooperates with the front and back surfaces of the shell 1 to form the spiral channel.

[0036] Specifically, the outer end of the spiral curved partition 12 is in contact with the side circumferential surface of the shell 1 .

[0037] Specifically, the shell 1 is composed of a cylinder 13 and a back plate 14 . The back plate 14 is threadedly connected to the cylinder 13 . A groove 141 for limiting the spiral curved partition 12 is formed on the back plate 14 .

[0038] The back plate 14 is provided with various specifications, and the curvatures of the grooves 141 on the back plates 14 of different specifications are different.

[0039] In a specific implementation, in order to facilitate the installation of the spiral curved partition 12 and improve the sealing performance of the spiral channel, a groove corresponding to the groove 141 on the back plate 14 is provided on the inner side of the upper panel of the shell 1 .

[0040] Specifically, the back plate 14 may be in the shape of a flat plate or a bowl-shaped concave plate.

[0041] Among them, when the back plate 14 is a bowl-shaped concave plate, the shape of the corresponding spiral curved partition 12 also changes. At this time, the height and angle of the spiral curved partition 12 near the middle part also change, and the cylinder 13 and the back plate 14 form a spiral sound wave channel again to avoid meaningless return of the back sound waves emitted by the sound source 2 in the shell 1.

[0042] Specifically, the sound source 2 is a speaker, a tympanic membrane, a sound board, or a sound-generating body or a vibrating body made of other materials.

[0043] In a specific implementation, in order to improve production efficiency, the sound outlet 11, the spiral curved partition 12, the cylinder 13 and the back plate 14 can be integrally formed.

[0044] The present invention arranges a spiral channel in the shell 1 to transmit the back sound waves emitted from the back of the sound source 2 to the front of the sound source 2, and couples with the forward sound waves emitted from the front of the sound source 2, thereby effectively improving the electroacoustic conversion efficiency and sound energy, and at the same time improving the holographic restoration of sound information.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A sound emitting and picking up device, characterized in that: include: A housing (1), wherein a sound outlet hole (11) or a sound outlet groove is provided on the front side of the housing (1); a sound source (2), the sound source (2) being embedded in the front face of the shell (1), the back face of the sound source (2) being located inside the shell (1), and the front face of the sound source (2) facing the outside of the shell (1); A spiral channel is also provided inside the shell (1), and the backward sound waves emitted from the back of the sound source (2) are transmitted to the sound outlet (11) after passing through the spiral channel, and after passing through the sound outlet (11), they intersect and couple with the forward sound waves emitted from the front of the sound source (2).

2. The sound emitting and picking-up device according to claim 1, characterized in that: The sound outlet holes (11) are provided in plurality and are evenly distributed on the shell (1) in a circular shape.

3. The sound emitting and picking-up device according to claim 1, characterized in that: The sound source (2) is arranged at the center position of the front side of the shell (1).

4. The sound emitting and picking-up device according to claim 1, characterized in that: A spiral curved partition (12) is installed inside the shell (1), and the spiral curved partition (12) cooperates with the front and back surfaces of the shell (1) to form the spiral channel.

5. The sound emitting and picking-up device according to claim 4, characterized in that: The outer end of the spiral curved partition (12) is in contact with the side circumferential surface of the shell (1).

6. The sound emitting and picking-up device according to claim 4, characterized in that: The shell (1) is composed of a cylinder (13) and a back plate (14); the back plate (14) is threadedly connected to the cylinder (13); and a groove (141) for limiting the position of the spiral curved partition (12) is provided on the back plate (14).

7. The sound emitting and picking-up device according to claim 6, characterized in that: The shape of the back plate (14) includes a flat plate or a bowl-shaped concave plate.

8. The sound emitting and picking-up device according to claim 1, characterized in that: The sound source (2) is a loudspeaker, a tympanic membrane, a sound board, or a sound-generating body or a vibrating body made of other materials.

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