Sound production and pickup device

Abstract

The utility model discloses a sounding and pickup device, which relates to the field of acoustic equipment, and comprises a cylindrical shell, 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 utility model 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 utility model relates to acoustics equipment field especially, relate to a sound production and pickup device. BACKGROUND

[0002] Traditional sound production and pickup device, such as loudspeaker, it is a sound production and pickup device with very low sound production efficiency, and the improvement of its sound production efficiency can be improved by setting it in a sound box, and the theoretical basis of traditional sound box design is infinite baffle theory, that is, a piece of infinite baffle is placed between the forward and backward sound waves of the loudspeaker diaphragm to block the forward and backward sound waves to prevent them from canceling each other in the air, but since it is difficult to make the infinite baffle infinitely large, the infinite baffle is folded towards the backward sound wave direction of the loudspeaker to form a closed space, which blocks the backward sound wave of the loudspeaker and completely releases the energy of the forward sound wave of the loudspeaker, thereby obtaining the basic structure of the modern sound box.

[0003] Since the structural design of the modern sound box is based on the infinite baffle theory, and the theoretical basis is to suppress the backward sound wave of the loudspeaker, the loudspeaker in the prior art is equivalent to a single-sided sound production device, however, the diaphragm of the loudspeaker itself vibrates to produce bidirectional sound waves in the forward and backward directions, but the energy of the backward sound wave of the loudspeaker is shielded by the closed sound box, which causes great loss of sound production energy of the loudspeaker, therefore, the sound production energy and efficiency of the loudspeaker in the modern sound design system are very low, therefore, how to effectively utilize the backward sound wave of the loudspeaker and improve the sound production energy and efficiency of the loudspeaker becomes a difficult problem to be solved by the technical personnel in the field. SUMMARY

[0004] The utility model aims at providing a sound production and pickup device to solve the problem of low sound production efficiency of the existing sound production and pickup device.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model provides a sound production and pickup device, which comprises:

[0007] The front surface of the shell is provided with an audio outlet hole or an audio outlet slot;

[0008] The sound source is embedded in the front surface of the shell, the back surface of the sound source is located in the interior of the shell, and the front surface of the sound source faces the exterior of the shell;

[0009] The interior of the shell is further provided with a spiral channel, the backward sound wave emitted by the back part of the sound source is transmitted to the audio outlet hole after passing through the spiral channel, and the forward sound wave emitted by the front surface of the sound source is coupled together after passing through the audio outlet hole.

[0010] Preferably, the sound holes are arranged in plurality and are distributed on the shell in a circumferential direction.

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

[0012] Preferably, a spiral curved partition is arranged inside the shell, and the spiral curved partition and the front face and the back face of the shell cooperatively form the spiral channel.

[0013] Preferably, the outer side end of the spiral curved partition abuts against the side circumferential surface of the shell.

[0014] Preferably, the shell is formed by 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 arranged on the back plate.

[0015] Preferably, the back plate is in a shape of a flat plate or a concave plate similar to a bowl.

[0016] Preferably, the sound source is a loudspeaker, a eardrum, a sound board, a sound emitting body or a vibration body.

[0017] Compared with the prior art, the utility model has the beneficial technical effects that:

[0018] The utility model discloses a spiral curved partition is arranged in the shell to form a spiral channel, sound holes or sound grooves are arranged on the front face of the shell, and a sound source is arranged in the central position of the front face of the shell, so that the back sound waves emitted by the back of the sound source can advance along the spiral channel in the shell, and the back sound waves can be coupled with the front sound waves emitted by the front face of the sound source after the back sound waves pass through the sound holes on the outer side of the spiral channel, thereby effectively improving the electroacoustic conversion efficiency and the sound energy, and improving the holographic restoration degree of the sound information. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in connection with the drawings.

[0020] Figure 1 It is a structure schematic view of the sound emitting and sound pickup device of the utility model.

[0021] Figure 2 It is a front view of the sound emitting and sound pickup device of the utility model.

[0022] Figure 3 It is a side view of the sound emitting and sound pickup device of the utility model.

[0023] Figure 4 It is a front view of the back plate of the utility model.

[0024] Figure 5 It is a structure schematic view of the sound emitting and sound pickup device of the utility model.

[0025] Figure 6 The utility model discloses a spiral curved baffle structure schematic diagram.

[0026] Mark explanation: 1, the shell, 2, sound source, 11, sound hole, 12, spiral curved baffle, 13, cylinder, 14, backboard, 141, recess. Specific embodiments

[0027] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clear and clear, the following is combined with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0028] As Figures 1-6 The utility model discloses a sound production and pickup device, comprising:

[0029] The shell 1 is provided with sound hole 11 or sound slot on the front surface;

[0030] The sound source 2 is embedded in the front surface of the shell 1, the back surface of the sound source 2 is located in the inside of the shell 1, and the front surface of the sound source 2 faces the outside of the shell 1;

[0031] The inside of the shell 1 is also provided with spiral channel, and the back sound wave emitted by the back of the sound source 2 is transmitted to the sound hole 11 after passing through the spiral channel and is coupled together with the forward sound wave emitted by the front surface of the sound source 2 after passing through the sound hole 11.

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

[0033] Specifically, the sound hole 11 is provided with a plurality of and is distributed on the shell 1 in the form of a circle.

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

[0035] Specifically, the inside of the shell 1 is provided with spiral curved baffle 12, and the spiral curved baffle 12 and the front surface and back surface of the shell 1 cooperate to form the spiral channel.

[0036] Specifically, the outer side end of the spiral curved baffle 12 and the side circumferential surface of the shell 1 are abutted together.

[0037] Specifically, the shell 1 is composed of cylinder 13 and backboard 14, the backboard 14 is threadedly connected on the cylinder 13, and the recess 141 for limiting the spiral curved baffle 12 is formed in the backboard 14.

[0038] The back plate 14 is provided with multiple 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 plate 12 and improve the sealing performance of the spiral channel, a groove corresponding to the groove 141 on the back plate 14 is arranged on the inner side of the upper panel of the shell 1.

[0040] Specifically, the shape of the back plate 14 includes a flat plate or a concave plate similar to a bowl.

[0041] When the back plate 14 is a concave plate similar to a bowl, the shape of the corresponding spiral curved partition plate 12 also changes, and the height and angle of the body of the spiral curved partition plate 12 close to the middle part also change, so that the spiral acoustic channel is formed again by the cylinder 13 and the back plate 14, and meaningless back-and-forth turning of the back acoustic waves emitted by the sound source 2 in the shell 1 is avoided.

[0042] Specifically, the sound source 2 is a loudspeaker, a tympanic membrane, a sound board, a sound-emitting 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 plate 12, the cylinder 13 and the back plate 14 can be integrally formed.

[0044] The utility model discloses a spiral channel is arranged in the shell 1, and the back acoustic waves emitted by the sound source 2 are transmitted to the front of the sound source 2, intersect and couple with the forward acoustic waves emitted by the sound source 2, effectively improve the electroacoustic conversion efficiency and sound energy, and improve the holographic restoration degree of sound information.

[0045] It should be noted that, in the present text, relational terms such as first and second and the like are used merely to differentiate one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] The above-described embodiments are merely preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope of the utility model claims.

Claims

1. A sound producing and sound picking up device, characterized by comprising: The application relates to a sound box. The sound box comprises: a shell (1) provided with sound holes (11) or sound grooves on the front surface; a sound source (2) embedded on the front surface of the shell (1), the back surface of the sound source (2) being located in the interior of the shell (1), and the front surface of the sound source (2) facing the outside of the shell (1); a spiral channel is further arranged in the interior of the shell (1), back sound waves emitted by the back surface of the sound source (2) are transmitted to the sound holes (11) after passing through the spiral channel, and the back sound waves are coupled with front sound waves emitted by the front surface of the sound source (2) after passing through the sound holes (11); the sound holes (11) are arranged in a plurality of and are circumferentially distributed on the shell (1); the sound source (2) is arranged at the central position of the front surface of the shell (1); a spiral curved partition plate (12) is arranged in the interior of the shell (1), the spiral curved partition plate (12) and the front surface and back surface of the shell (1) cooperatively form the spiral channel; 2. The sound production and pickup device of claim 1, wherein: the outer side end of the spiral curved partition plate (12) and the side circumferential surface of the shell (1) abut together.

3. The sound production and pickup device of claim 2, wherein: 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 recess (141) for limiting the spiral curved partition plate (12) is arranged on the back plate (14).

4. The sound production and pickup device of claim 1, wherein: The shape of the back plate (14) comprises a flat plate or a concave plate similar to a bowl. The sound source (2) is a loudspeaker, a tympanic membrane, a sound board, a sound emitting body or a vibration body made of other materials.

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