Flat horn capable of improving low frequency

Abstract

The utility model discloses a flat horn for raising low frequency, which comprises a basin stand and an upper cover, the upper cover covers the basin stand to form an installation cavity with the basin stand, a diaphragm structure is installed in the installation cavity, a diaphragm assembly comprises a support ring, a diaphragm and a dome, the dome is arranged at the top of the diaphragm, a folding ring with an arc-shaped cross section is arranged at the position, close to the edge, of the diaphragm, and the support ring is connected with the diaphragm. And the vibrating diaphragm is arranged on the supporting ring through the planar structure at the edge. According to the utility model, a traditional diaphragm structure is improved, a special structural design is carried out on the diaphragm, the diaphragm assembly comprises a support ring, the diaphragm and a dome, the diaphragm is arranged to be a structure with an arc-shaped folding ring, the folding ring is arranged on the support ring through the design of the folding ring, and a double-voice-coil structure is matched, so that the diaphragm assembly is simple in structure and convenient to use. The design can greatly improve the amplitude of the vibrating diaphragm, thereby improving the low frequency of the loudspeaker.

Description

TECHNICAL FIELD

[0001] The utility model relates to a loudspeaker technical field, concretely is a flat loudspeaker of promoting low frequency. BACKGROUND

[0002] The diaphragm of the traditional flat loudspeaker is a plane structure, so the vibration amplitude of the diaphragm is very small, within 0.1mm, for the loudspeaker, the greater the diaphragm amplitude, the better the low frequency performance. SUMMARY

[0003] The utility model discloses a flat loudspeaker of promoting low frequency, through the improvement diaphragm structure, can greatly improve the amplitude of the diaphragm, realize the promotion of low frequency, can solve the problem in the prior art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A flat loudspeaker of promoting low frequency, including basin frame and upper cover, the upper cover is covered on the basin frame and forms the installation chamber between the basin frame, install the diaphragm structure in the installation chamber, the diaphragm component includes support ring, diaphragm and ball top, the top of diaphragm is provided with ball top, and the diaphragm is provided with the folded ring of the cross section arc shape near the edge, and the diaphragm is arranged on the support ring through the plane structure of the edge.

[0006] Further, the diaphragm and ball top all exist at least the plane structure for bonding the voice coil, and the bottom of diaphragm and the top of ball top all bond the voice coil.

[0007] Further, the bottom of the upper cover is arranged on the support ring.

[0008] Further, the upper magnetic circuit of the diaphragm component is bonded on the upper cover, and the lower magnetic circuit of the diaphragm component is bonded on the basin frame.

[0009] Further, the upper magnetic circuit and lower magnetic circuit all include outer magnet and inner magnet, and the inner magnet is arranged in the center of outer magnet.

[0010] Further, the voice coil and upper magnetic circuit and lower magnetic circuit leave the clearance of at least 0.2mm.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] The utility model discloses a special structure design to the diaphragm, the diaphragm assembly of the utility model includes support ring, diaphragm and ball top three parts, set up the structure of the diaphragm with the arc of the folding ring, through the design of folding ring and set up folding ring on the support ring, and cooperate double voice coil structure, like this can guarantee the amplitude increase 3 times of diaphragm, and this loudspeaker can be used for OWS etc. The earphone and intelligent glasses of development formula product. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the assembly drawing of the utility model's overhead direction;

[0014] Figure 2 It is the assembly drawing of the utility model's overhead direction;

[0015] Figure 3 It is the structure exploded view of the utility model's flat loudspeaker of promoting low frequency;

[0016] Figure 4 It is the sectional view of the utility model's flat loudspeaker of promoting low frequency.

[0017] In the drawing: 1, the stand; 2, upper cover;3, support ring;4, diaphragm;5, ball top;6, folding ring;7, voice coil;8, outer magnet;9, inner magnet. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Referring to Figures 1-4 A flat loudspeaker of promoting low frequency, including stand 1 and upper cover 2, the upper cover 2 is covered on the stand 1 and forms installation chamber between the stand 1, the stand 1 and the upper cover 2 are fixed by glue bonding, the upper cover is provided with sound hole in the middle, can be provided in the middle, also can be provided in the side, the installation chamber is installed with diaphragm structure, and the diaphragm assembly includes support ring 3, diaphragm 4 and ball top 5, the top of diaphragm 4 is provided with ball top 5, the diaphragm 4 is provided with folding ring 6 of arc-shaped cross section near the edge, the folding ring 6 is arc-shaped and can increase the amplitude of diaphragm 4, and is made of elastic material, for example, is made of one of PEEK, PU, PET or is made of multiple material composite, the diaphragm 4 is arranged on the support ring 3 through the plane structure of the edge, the ball top 5 is selected from rigid material, the central region of the ball top 5 is the plane structure, is convenient for bonding voice coil 7, and the material of the ball top 5 can be plastic or metal, carbon fiber and other hard and light materials.

[0020] Referring to Figure 4 The diaphragm 4 and the dome 5 each have at least a planar structure for bonding the voice coil 7, and the voice coil 7 is bonded to the bottom of the diaphragm 4 and the top of the dome 5. The voice coil 7 can be bonded to the bottom of the diaphragm 4 alone, or to the top of the dome 5 alone, or, as in the present application, a double voice coil structure is adopted, that is, the voice coil 7 is bonded to the bottom of the diaphragm 4 and the top of the dome 5. If two voice coils 7 are adopted, the two voice coils 7 are connected in conduction through the PCB on the basket 1. In this way, the number of turns of the voice coil 7 of the loudspeaker is doubled, according to the Ampere force formula: F=BIL, where L is the number of turns of the voice coil, and the number of turns L of the voice coil is doubled, the Ampere force F is also doubled, and the sound pressure level output by the loudspeaker is increased by 3dB. Therefore, the adoption of a double voice coil structure can effectively improve the output of the loudspeaker. The present embodiment demonstrates a double voice coil structure, and although the present embodiment does not demonstrate the voice coil 7 bonded to the bottom of the diaphragm 4 alone or to the top of the dome 5 alone, the setting method is simple and easy to operate.

[0021] The bottom of the upper cover 2 is arranged on the support ring 3.

[0022] An upper magnetic circuit bonded to the upper cover 2 is arranged above the diaphragm assembly, which serves to position the height of the magnet and ensure that the gap between the upper magnet and the voice coil 7 is more stable. A lower magnetic circuit bonded to the basket 1 is arranged below the diaphragm assembly, which is positioned by the basket 1 and ensures that the gap between the lower magnetic circuit and the voice coil 7 is more stable.

[0023] Both the upper magnetic circuit and the lower magnetic circuit include an outer magnet 8 and an inner magnet 9, and the inner magnet 9 is arranged in the center of the outer magnet 8. The magnetism of the outer magnet 8 and the inner magnet 9 is opposite, and a gap can be left between the outer magnet 8 and the inner magnet 9 or not (the present application leaves a certain gap), as shown in Figure 4 The outer magnet of the outer magnet 8 is N (S), and the inner magnet of the inner magnet 9 is S (N). The voice coil 7 is subjected to the magnetic force lines from N to S of the upper magnetic circuit and vibrates up and down, and the voice coil 7 is subjected to the magnetic force lines from N to S of the lower magnetic circuit and vibrates up and down. The central part of the inner magnet 9 of the upper magnetic circuit is also provided with a sound outlet hole.

[0024] A gap of at least 0.2mm is left between the voice coil 7 and the upper magnetic circuit and the lower magnetic circuit, providing sufficient space for the vibration of the diaphragm 4.

[0025] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation 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.

[0026] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A flat panel loudspeaker for enhancing low frequencies, comprising a frame (1) and a top cover (2), the top cover (2) covering the frame (1) and forming a mounting chamber between the top cover (2) and the frame (1), characterized in that, The mounting chamber is equipped with a diaphragm assembly, which includes a support ring (3), a diaphragm (4) and a dome (5). The top of the diaphragm (4) is provided with a dome (5), and the diaphragm (4) is provided with an arc-shaped folded ring (6) near the edge. The diaphragm (4) is set on the support ring (3) through the planar structure of the edge.

2. The flat panel speaker for enhancing low frequencies according to claim 1, characterized in that, Both the diaphragm (4) and the dome (5) have at least a planar structure for bonding the voice coil (7), and the bottom of the diaphragm (4) and the top of the dome (5) are bonded with the voice coil (7).

3. The flat panel speaker for enhancing low frequencies according to claim 1, characterized in that, The bottom of the upper cover (2) is set on the support ring (3).

4. The flat panel speaker for enhancing low frequencies according to claim 2, characterized in that, The diaphragm assembly has an upper magnetic circuit bonded to the upper cover (2) above it, and a lower magnetic circuit bonded to the frame (1) below it.

5. The flat panel speaker for enhancing low frequencies according to claim 4, characterized in that, Both the upper and lower magnetic circuits include an outer magnet (8) and an inner magnet (9), with the inner magnet (9) positioned in the center of the outer magnet (8).

6. The flat panel speaker for enhancing low frequencies according to claim 5, characterized in that, The voice coil (7) has a gap of at least 0.2 mm between it and the upper and lower magnetic circuits.

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