CN111586535A - A low distortion speaker - Google Patents

Abstract

The invention discloses a low-distortion loudspeaker, which comprises a basin frame (1), a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are arranged on the basin frame (1), the vibration system comprises a vibrating diaphragm, a voice coil (2) and an elastic wave (3), the elastic wave (3) sequentially comprises an inner edge part (32), a fluctuation part (31) and an outer edge part (30) from inside to outside, the inner edge part (32) is fixedly connected with the periphery of the voice coil (2), the outer edge part (30) is fixedly connected with the inner wall of the basin frame (1), the fluctuation part (31) is a continuous ripple structure connected between the inner edge part (32) and the outer edge part (30), and the fluctuation amplitude of the fluctuation part (31) is gradually reduced from inside to outside. According to the low-distortion loudspeaker, the elastic wave adopts a continuous corrugated structure with gradually-changed fluctuation amplitude, so that the propagation path and the natural frequency of simple harmonic vibration and particle motion thereof can be effectively inhibited or broken, and therefore, the generation of resonance and stray vibration can be inhibited, and the effect of low distortion is achieved.

Description

A low distortion speaker

technical field

The invention relates to the technical field of acoustics, in particular to a low-distortion speaker.

Background technique

A loudspeaker, that is, a horn, is an energy conversion device used to complete the conversion between electrical signals and sound signals. A loudspeaker usually includes a vibration system and a magnetic circuit system. The vibration system includes a combined ring, a diaphragm, a voice coil, and an elastic wave arranged at the bottom of the diaphragm. The function of elastic wave is to provide compliance CMS, restoring force and damping RMS for other suspension systems (diaphragm, voice coil, ring) of the loudspeaker, so as to keep the linear piston motion as far as possible when it vibrates, which is indispensable for loudspeakers. one of the parts. However, the current commonly used elastic wave structure causes high distortion of the sound quality played by the speaker, and cannot provide high-quality sound.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a low-distortion speaker for reducing the distortion of the speaker and improving the sound quality of the speaker by improving the structure of the elastic wave.

In order to achieve the above objects, the technical solutions adopted in the present invention are as follows.

A low-distortion speaker includes a basin frame, a magnetic circuit system and a vibration system arranged on the basin frame. The inner edge is fixedly connected with the outer periphery of the voice coil, the outer edge is fixedly connected with the inner wall of the basin frame, and the wave portion is connected to the inner edge and the outer edge. The continuous corrugated structure between the outer edge portions, the wave amplitude of the wave portion gradually decreases from the inside to the outside.

Further, the wave portion includes a plurality of ascending segment arcs and a plurality of descending segment arcs sequentially arranged, and the heights of the plurality of ascending segment arcs gradually decrease in the direction from the inside.

Further, the ratio of the arc heights of two adjacent ascending segments is R, and the value of R is between 1.0 and 1.8.

Further, the connecting lines of the bottom ends of the arcs of the plurality of descending segments are perpendicular to the outer peripheral surface of the voice coil.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

The low-distortion horn provided by the present invention adopts a new elastic wave design scheme. The continuous corrugated structure design with gradual fluctuation in amplitude can effectively suppress or break the propagation path and natural frequency of simple harmonic vibration and particle motion. Therefore, It can suppress the generation of resonance and stray vibration, so as to achieve the effect of low distortion. Especially when applied to AI speaker products, it has a good improvement effect on its voice wake-up function.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments.

1 is a schematic three-dimensional structure diagram of a low-distortion speaker disclosed in the present invention;

2 is a schematic diagram of the exploded structure of the low-distortion speaker disclosed in the present invention;

3 is a schematic cross-sectional structure diagram of a low-distortion speaker disclosed in the present invention;

FIG. 4 is a partial enlarged schematic diagram of the elastic wave part of the low distortion horn disclosed in the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

A detailed description will be given below through specific embodiments.

Please refer to FIG. 1 to FIG. 4 , an embodiment of the present invention provides a low-distortion speaker. The low-distortion speaker includes a basin frame 1 and a magnetic circuit system and a vibration system arranged on the basin frame 1 .

The magnetic circuit system includes a U-shaped seat 7 arranged at the bottom of the basin frame 1 , a magnet 8 and a washer 9 arranged in the U-shaped seat 7 , and the washer 9 is arranged above the magnet 8 . The vibration system includes a diaphragm, a voice coil 2 and an elastic wave 3 . The vibrating film (or called drum paper) is a vibrating and sounding unit, and includes a folded ring 4 arranged on the upper end face of the basin frame 1 and a cone 5 connected to the folded ring 4 . The upper end of the voice coil 2 is connected to the cone 5 , and the voice coil 2 is located between the outer circumference of the washer 9 and the inner wall of the U-shaped seat 7 . The elastic wave 3 is a circular ring shape, the inner side of which is fixedly connected with the voice coil 2 , and the outer side is fixedly connected with the inner wall of the basin frame 1 .

In particular, the elastic wave 3 includes an inner edge portion 32, a wave portion 31 and an outer edge portion 30 in sequence from the inside to the outside. The inner edge portion 32 is fixedly connected with the outer peripheral surface of the voice coil 2, and the outer edge portion 30 is fixedly connected to the inner wall of the basin frame 1, the wave portion 31 is a continuous corrugated structure connected between the inner edge portion 32 and the outer edge portion 30, and the wave amplitude of the continuous corrugated structure is It gradually decreases from the inside to the outside.

Optionally, the wave portion 31 includes a plurality of ascending segment arcs 33 (that is, wave crest portions) and a plurality of descending segment arcs 34 (that is, wave trough portions) arranged in sequence, and, along the direction from the inside, so the The heights of the plurality of ascending segment arcs 33 gradually decrease.

Optionally, the radii of the ascending segment arc 33 and the descending segment arc 34 are equal.

Optionally, the ratio of the heights of the two adjacent ascending segment arcs 33 is R, and the value of R may be between 1.0 and 1.8, especially between 1.3 and 1.5.

Optionally, the connecting line of the bottom ends of the plurality of descending segment arcs 34 is perpendicular to the outer peripheral surface of the voice coil 2 .

In some embodiments of the present invention, the vibration system of the low-distortion speaker further includes a dust cover 6 . The dust cover 6 is located above the cone ( 5 ), and its outer edge is bonded to the folded ring 4 . The dust cover 6 is used to prevent dust, impurities and water mist from entering the interior of the speaker.

Optionally, the basin frame 1 includes a circular body portion and a square extension portion at the upper end of the body portion. The extension portion may be provided with several mounting holes to facilitate mounting the horn to other devices. The height of the basin frame 1 is 5 to 25 mm. The length (or width, ie the side length of the extension) of the basin frame 1 is 30 to 65 mm. Preferably, the height of the basin frame 1 is 13.1 mm, and the length (or width, that is, the side length of the extension portion) of the basin frame 1 is 47 mm. On the premise of ensuring the sound quality of the speaker and the installation space required for the components, the overall structure of the basin frame 1 is made more compact, so as to meet the current development needs of miniaturization.

To sum up, the embodiment of the present invention discloses a low-distortion speaker, and it can be seen from the above technical solutions that the embodiment of the present invention has the following advantages:

The low-distortion horn provided by the present invention adopts a new elastic wave design scheme. The continuous corrugated structure design with gradual fluctuation in amplitude can effectively suppress or break the propagation path and natural frequency of simple harmonic vibration and particle motion. Therefore, It can suppress the generation of resonance and stray vibration, so as to achieve the effect of low distortion. Especially when applied to AI speaker products, it has a good improvement effect on its voice wake-up function.

It should be noted that, in the description of the present invention, the terms "first", "second", "third", etc. are used to distinguish different objects, rather than to describe a specific order. The terms "plurality" and "several" mean two or more, unless expressly and specifically limited otherwise. The terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

In the description of the present invention, for orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness" , "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "Clockwise", "counterclockwise" and other indications of orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be Having a particular orientation, being constructed and operating in a particular orientation should not be construed as limiting the specific protection scope of the present invention.

In the present invention, unless otherwise expressly specified and limited, the terms "assembled", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated It can be connected to the ground; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two components can be connected internally. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or modify some of the technical features. Equivalent replacements are made; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A low-distortion speaker, comprising a basin frame (1) and a magnetic circuit system and a vibration system arranged on the basin frame (1), the vibration system comprising a vibrating film, a voice coil (2) and an elastic wave (3), It is characterized by: The elastic wave (3) includes an inner edge portion (32), a wave portion (31) and an outer edge portion (30) in sequence from the inside to the outside, and the inner edge portion (32) is connected to the outer periphery of the voice coil (2). Fixed connection, the outer edge part (30) is fixedly connected with the inner wall of the basin frame (1), and the wave part (31) is connected to the inner edge part (32) and the outer edge part (30) ), the fluctuation range of the fluctuation portion (31) gradually decreases from the inside to the outside. 2. The low-distortion speaker according to claim 1, characterized in that, The wave portion (31) includes a plurality of ascending segment arcs (33) and a plurality of descending segment arcs (34) arranged in sequence, and along the direction from the inside, the multiple ascending segment arcs (33) height gradually decreases. 3. The low-distortion speaker according to claim 2, characterized in that, The ratio of the heights of the two adjacent ascending segment arcs (33) is R, and the value of R is between 1.0 and 1.8. 4. The low-distortion speaker according to claim 2, characterized in that, The connecting lines of the bottom ends of the plurality of descending segment arcs (34) are perpendicular to the outer peripheral surface of the voice coil (2). 5. The low-distortion speaker according to any one of claims 1-4, characterized in that, The diaphragm includes a folded ring (4) and a cone (5), the folded ring (4) is connected to the upper end of the basin frame (1), and the cone (5) is connected to the folded ring (4) ), the voice coil (2) is connected to the cone (5). 6. The low-distortion speaker according to claim 5, characterized in that, The vibration system further comprises a dust cover (6), the dust cover is located above the cone (5) and the outer edge is bonded to the folded ring (4). 7. The low-distortion speaker according to any one of claims 1-4, characterized in that, The magnetic circuit system comprises a U-shaped seat (7) arranged at the bottom of the basin frame (1), a magnet (8) arranged in the U-shaped seat (7), and a washer (9) arranged at the upper end of the magnet (8). , the voice coil (2) is located on the outer periphery of the washer (9).

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