CN206908813U - More driving ultra-thin panel full frequency speakers - Google Patents

Abstract

The utility model discloses a multi-drive ultra-thin flat-panel full-frequency loudspeaker, which comprises a bracket, a magnetic circuit system and a vibration system, the bracket is provided with an accommodating cavity, the magnetic circuit system includes a U iron, a magnet and a washer, and the magnet and the washer are bonded together. The vibration system is composed of flat drum paper and voice coil. The magnetic circuit system is 2 or more, and the voice coil is 2 or more. The magnetic circuit system It is combined with the voice coil to form a multi-voice coil multi-drive structure, and is set in the accommodation cavity. The positive and negative poles of the voice coil are connected by external wires to realize the parallel connection between multiple voice coils. In the utility model, a plurality of magnetic circuit systems and voice coils of a parallel structure are arranged in the housing cavity of the bracket to form a multi-voice coil multi-drive structure. It provides more powerful driving force, improves efficiency, maintains the height of the original speaker, effectively reduces the second and third distortion of the speaker, and makes the frequency response curve smoother.

Description

Multi-driver ultra-thin flat-panel full-range speaker

technical field

The utility model relates to the field of loudspeakers, in particular to a flat panel loudspeaker.

Background technique

The birth of flat-panel speaker technology is a revolution in speaker technology, and it represents a major innovation in the speaker field. Because it has completely changed the traditional speaker's principle of piston-like movement, and replaced it with the random vibration of millimeter-scale thin plates. After several years of research by mathematics and acoustics experts, flat panel speaker technology has been put into research in commercial, professional and household applications.

At present, in order to ensure that most flat-panel speakers can be installed on ultra-thin electrical appliances, the volume of the speaker is reduced in the same proportion, but the power is reduced when the volume is reduced, resulting in insufficient sound loudness, increasing the distortion rate of the speaker, and greatly reducing the quality of the sound. .

In view of the above problems, in the Chinese utility model patent application number "201020503128.7", the patent document named "ultra-thin flat panel speaker" discloses a flat panel speaker whose drum paper adopts flat drum paper, which effectively reduces the volume of the drum paper , and then reduce the volume of the speaker, so that when the speaker is installed on other electrical equipment, it takes up less space and meets the installation requirements of ultra-thin electrical appliances.

Although the use of flat drum paper can effectively reduce the volume of the speaker, it also reduces the height of the speaker, and the single magnetic circuit pushes the diaphragm, and the driving force is small. Due to the vibration of the single-drive drum paper, reverse resonance is likely to occur, and the distortion increases.

Contents of the invention

In order to solve the above problems, the utility model provides a multi-drive ultra-thin flat-panel speaker that maintains the original speaker height and reduces distortion.

In order to achieve the above purpose, the technical solution adopted by the utility model is to provide a multi-drive ultra-thin flat-panel full-range loudspeaker, including a bracket, a magnetic circuit system and a vibration system, the bracket is provided with an accommodating cavity, and the magnetic circuit system includes U-iron, magnet and washer, the magnet and washer are bonded and stacked together, and both are sleeved in the U-iron, the vibration system is composed of a flat drum paper and a voice coil, and the magnetic circuit system is 2 There are two or more voice coils, and the magnetic circuit system is bonded with the voice coils to form a multi-voice coil multi-drive structure, which is sleeved in the accommodating cavity. The positive and negative poles are connected through external wires to realize parallel connection among multiple voice coils.

Wherein, the bracket is provided with an annular groove corresponding to the flat drum paper, and the flat drum paper is fixed on the bracket by being inserted into the annular groove.

Wherein, a terminal is provided on the outside of the bracket, and the terminal is electrically connected to the voice coil through a cotton thread.

Wherein, the two ends of the terminal are provided with annular sheets, the top of the terminal is provided with a square protrusion, the bracket is provided with a square groove corresponding to the square protrusion, and the terminal is inserted into the square recess through the square protrusion. fixed on the slot.

The beneficial effects of the utility model are:

1. The utility model forms a multi-voice coil multi-drive structure by setting two or more magnetic circuit systems and voice coils in the housing cavity of the bracket. The multi-voice coil setting is conducive to vibration balance, and the multi-drive energy is adopted for The diaphragm provides stronger driving force, improves efficiency, maintains the height of the original speaker, effectively reduces the second and third distortion of the speaker, and makes the frequency response curve smoother.

2. The positive and negative poles of the voice coil are connected through external wires to realize the parallel connection between multiple voice coils. When multiple voice coils are connected in parallel, the total impedance value of the speaker becomes half of the impedance value of a single voice coil. The problem of driving low impedance is the goal; multiple voice coils have the same conductive characteristics, which effectively avoids the large distortion caused by the mechanical structure differences between multiple speakers, thereby achieving better stereo effects.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural exploded view of the utility model.

Fig. 3 is a schematic structural diagram of a terminal.

Description of reference numerals: 1-U iron; 2-magnet; 3-washer; 4-terminal; 5-bracket; 6-voice coil; 7-flat drum paper;

detailed description

The utility model will be described in detail below in conjunction with specific embodiments and accompanying drawings.

Please refer to Figures 1-3, the utility model relates to a multi-drive ultra-thin flat-panel full-range loudspeaker, including a bracket 5, a magnetic circuit system and a vibration system, the bracket 5 is provided with an accommodation cavity, and the magnetic circuit system Including U-iron 1, magnet 2 and washer 3, the magnet 2 and washer 3 are bonded and stacked together, and both are sleeved in the U-iron 1, and the vibration system is bonded by a flat drum paper 7 and a voice coil 6 Composition, the magnetic circuit system is 2 or more, the voice coil 6 is 2 or more, the magnetic circuit system and the voice coil 6 are bonded and combined into a multi-voice coil multi-drive structure, and set Located in the accommodating cavity, the positive and negative poles of the voice coil 6 are connected through external wires to realize the parallel connection among multiple voice coils 6 .

In the utility model, two or more magnetic circuit systems and voice coils 6 are arranged in the housing cavity of the bracket 5 to form a multi-voice coil multi-drive structure. The diaphragm provides stronger driving force, improves efficiency, maintains the height of the original speaker, effectively reduces the second and third distortion of the speaker, and makes the frequency response curve smoother.

Moreover, when multiple voice coils 6 are connected in parallel, the total impedance value of the loudspeaker becomes half of the single voice coil impedance value, which solves the problem that the power amplifier is aimed at driving low impedance; multiple voice coils 6 have the same conductive characteristics, It effectively avoids the large distortion caused by the difference in mechanical structure between multiple speakers, so as to achieve a better stereo effect.

In this embodiment, the bracket 5 is provided with an annular groove corresponding to the flat drum paper 7, and the flat drum paper 7 is fixed on the bracket 5 by inserting into the annular groove. Such a structure enables the flat drum paper 7 to be firmly Securely fixed on the bracket 5.

In this embodiment, a terminal 4 is provided on the outside of the support 5 , and the terminal 4 is electrically connected to the voice coil 6 through a cotton thread 8 , so that current is introduced into the voice coil 6 .

In this embodiment, the two ends of the terminal 4 are provided with annular sheets, the top of the terminal 4 is provided with a square protrusion, the bracket 5 is provided with a square groove corresponding to the square protrusion, and the terminal 4 passes through the square The protrusion is plugged into the square groove and fixed, such a structure enables the terminal 4 to be firmly fixed on the bracket 5 .

Below by specific embodiment the utility model will be further described.

When the signal is fed to the speaker, the terminal 4 leads the current into the voice coil 6 through the cotton wire 8, and when the current passes through the voice coil 6, it provides driving force for the voice coil 6 under the action of the ampere force of the magnetic circuit system, pushing the flat drum paper 7 , so that the flat drum paper 7 vibrates and resonates with the surrounding air to emit sound.

The above embodiment is only a description of the preferred implementation of the utility model, and is not intended to limit the scope of the utility model. On the premise of not departing from the design spirit of the utility model, ordinary engineers and technicians in the field made the technical solution of the utility model Various modifications and improvements should fall within the scope of protection determined by the claims of the present utility model.

Claims (4)

1. A multi-drive ultra-thin flat panel full-range loudspeaker, comprising a support, a magnetic circuit system and a vibration system, the support is provided with an accommodating chamber, the magnetic circuit system comprises U iron, a magnet and a washer, and the magnet and Washers are bonded and stacked together, and they are all sleeved in the U iron. The vibration system is composed of a flat drum paper and a voice coil. It is characterized in that: the magnetic circuit system is 2 or more, and the There are 2 or more voice coils, and the magnetic circuit system and the voice coil are bonded together to form a multi-voice coil multi-drive structure, which is set in the accommodating cavity, and the positive and negative poles of the voice coil are connected by external wires Realize the parallel connection between multiple voice coils. 2. The multi-drive ultra-thin flat panel full-range loudspeaker according to claim 1, characterized in that: the bracket is provided with an annular groove corresponding to the flat drum paper, and the flat drum paper is fixed on the on the stand. 3. The multi-drive ultra-thin flat-panel full-range loudspeaker according to claim 1, characterized in that: terminals are provided on the outside of the bracket, and the terminals are electrically connected to the voice coil through cotton threads. 4. The multi-drive ultra-thin flat-panel full-range loudspeaker according to claim 3, characterized in that: the two ends of the terminal are provided with annular sheets, the top of the terminal is provided with a square protrusion, and the bracket is provided with a square protrusion. A corresponding square groove is formed, and the terminal is inserted and fixed on the square groove through a square protrusion.