Ultra-light and ultra-thin loudspeaker

Abstract

The utility model relates to an ultra-light and ultra-thin loudspeaker which comprises a front cover, a voice diaphragm, a voice coil, a support, a pole piece, magnetic steel and a magnetic bowl. Weight reduction grooves are evenly formed in the edge of the inner side of the support. A wiring terminal is arranged at the corner position of the back surface of the bracket; a plurality of reinforcing ribs are uniformly distributed on the upper surface of the voice diaphragm along the length direction of the voice diaphragm, and each reinforcing rib is arranged along the width direction of the voice diaphragm; the edge position of the lower surface of the voice diaphragm is adhered to the edge position of the upper surface of the bracket; the front cover is adhered to the edge of the upper surface of the voice diaphragm; the porcelain bowl is adhered to the edge of the lower surface of the support, and the wiring terminal on the support is located on the outer side of the porcelain bowl. The bottom of the magnetic steel is bonded in the porcelain bowl; the pole piece is adhered to the top of the magnetic steel; the voice coil is located in the support, and the top of the voice coil is bonded with the lower surface of the voice diaphragm; the magnetic steel and the pole piece are positioned in the voice coil; the voice coil is electrically connected with the wiring terminal. According to the utility model, a dome assembly is canceled, and the product attribute of the dome is completed by reinforcing the structural design of the voice diaphragm.

Description

TECHNICAL FIELD

[0001] The utility model relates to a loudspeaker technical field especially a kind of super light and thin loudspeaker. BACKGROUND

[0002] Loudspeaker is a kind of equipment for converting electrical signal into sound, usually used in audio playback system. It drives the internal vibrating diaphragm (diaphragm) to produce mechanical vibration by receiving current signal from audio source, to form sound wave in air, and finally be heard by human ear. When audio signal passes through voice coil in loudspeaker, current variation produces varying magnetic field, which interacts with fixed magnetic field of magnet, to push voice coil and diaphragm to vibrate, thereby generating sound wave.

[0003] At present, the requirement of micro loudspeaker is higher and higher, for example, micro loudspeaker used in unmanned aerial vehicle, how to realize light and thin without affecting the pronunciation effect of loudspeaker is the problem to be solved by the person skilled in the art.

[0004] Therefore, it is necessary to provide a super light and thin loudspeaker to solve the above technical problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of super light and thin loudspeaker, cancels ball top component, completes the product attribute of ball top by strengthening diaphragm structure design.

[0006] To achieve the above-mentioned utility model purposes, a super light and thin loudspeaker is provided, comprising a front cover, a diaphragm, a voice coil, a bracket, a pole piece, a magnetic steel and a magnetic bowl.

[0007] The inner side edge of the bracket is uniformly provided with a weight reduction groove;

[0008] The edge corner of the back surface of the bracket is provided with a terminal for connecting external power supply;

[0009] The upper surface of the diaphragm is uniformly distributed with a plurality of reinforcing ribs along its length direction, and each reinforcing rib is arranged along the width direction of the diaphragm.

[0010] The lower surface edge of the diaphragm is bonded to the upper surface edge of the bracket;

[0011] The front cover is bonded to the upper surface edge of the diaphragm;

[0012] The porcelain bowl is bonded to the lower surface edge of the bracket, and the terminal on the bracket is located outside the porcelain bowl.

[0013] The bottom of the magnetic steel is bonded in the porcelain bowl;

[0014] The pole piece is bonded to the top of the magnetic steel.

[0015] The voice coil is located in the support, and the top of the voice coil is bonded with the lower surface of the diaphragm;

[0016] The magnetic steel and the pole piece are located in the voice coil; and the voice coil is electrically connected with the terminal.

[0017] Further, the corners of the support are each provided with a positioning protrusion, and the corners of the front cover are each provided with an insertion part, which corresponds to the positioning protrusion one by one.

[0018] Preferably, a first annular groove is provided on the diaphragm between the support and the voice coil and is concave downward.

[0019] Further, a second annular groove is provided on the diaphragm between the support and the first annular groove and is concave upward.

[0020] Compared with the prior art, the super-thin loudspeaker has the following advantages:

[0021] (1) By specific structural design, the ball top assembly is cancelled, and the product properties of the ball top are completed by strengthening the diaphragm structure design, so that the requirements of super-thin are realized without affecting the sound effect of the loudspeaker;

[0022] (2) Simple structure, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an exploded view of the super-thin loudspeaker of the embodiment;

[0024] Figure 2 It is a structural schematic view of the super-thin loudspeaker of the embodiment;

[0025] Figure 3 It is a structural schematic view of the support in the embodiment Figure 1 ;

[0026] Figure 4 It is a structural schematic view of the support in the embodiment Figure 2 ;

[0027] Figure 5 It is a structural schematic view of the diaphragm in the embodiment;

[0028] Figure 6 It is a structural schematic view of the front cover in the embodiment;

[0029] Figure 7 It is a sectional view of the super-thin loudspeaker of the embodiment. DETAILED DESCRIPTION

[0030] The utility model is further described below in combination with the drawings and specific embodiments.

[0031] As Figure 1 and Figure 2 The utility model discloses a super light and thin loudspeaker, which comprises a front cover 1, a sound film 2, a voice coil 3, a support 4, a pole piece 5, a magnetic steel 6 and a magnetic bowl 7.

[0032] As Figure 3 The inner side edge of the support 4 is uniformly provided with a weight-reducing groove 8, which facilitates wire arrangement and effectively reduces the weight of the support.

[0033] As Figure 4 The back of the support 4 is provided with a wiring terminal 9 at the edge corner position, which is used for connecting an external power supply.

[0034] As Figure 5 The upper surface of the sound film 2 is uniformly provided with a plurality of reinforcing ribs 12 along the length direction, and each reinforcing rib 12 is arranged along the width direction of the sound film 2; the lower surface edge of the sound film 2 is bonded to the upper surface edge of the support 4; and the front cover 1 is bonded to the upper surface edge of the sound film 2.

[0035] In the embodiment, as Figure 3 The edge corner of the support 4 is provided with a positioning protrusion 10, as Figure 6 The edge corner of the front cover 1 is provided with a plug-in part 11, and the plug-in part 11 corresponds to the positioning protrusion 10 one by one; in this way, the front cover 1 can be quickly positioned, the assembly is facilitated, and the connection strength is effectively improved.

[0036] The porcelain bowl 7 is bonded to the lower surface edge of the support 4, and the wiring terminal 9 on the support 4 is located outside the porcelain bowl 7.

[0037] The bottom of the magnetic steel 6 is bonded to the inside of the porcelain bowl 7; and the pole piece 5 is bonded to the top of the magnetic steel 6.

[0038] The voice coil 3 is located in the support 4, and the top of the voice coil 3 is bonded to the lower surface of the sound film 2; the magnetic steel 6 and the pole piece 5 are located in the voice coil 3; and the voice coil 3 is electrically connected with the wiring terminal 9.

[0039] As Figure 7 As shown in the figure, an alternating voltage is input at the wiring terminal 9 of the support 4 to turn on the voice coil 3, the voice coil 3 vibrates up and down in the magnetic field, pushes the reinforcing rib sound film 2, the sound film 2 pushes the air to transmit sound, the lightweight design cancels the ball top assembly by arranging the reinforcing ribs 12 on the sound film 2, and the product attributes of the ball top are completed by strengthening the structural design of the sound film 2.

[0040] In the embodiment, as shown in Figure 5 The first annular groove 13 is concave downward and is arranged between the support 4 and the voice coil 3 on the diaphragm 2. When the diaphragm vibrates, compensation is effectively provided to avoid the diaphragm from being damaged due to vibration, thereby prolonging the service life of the diaphragm.

[0041] Further, in the embodiment, the second annular groove 14 is concave upward and is arranged between the support 4 and the first annular groove 13 on the diaphragm 2. In this way, the glue at the bonding position of the front cover 1 and the diaphragm 2 is blocked by the second annular groove 14, so that the glue cannot enter the normal working area of the diaphragm 2 and affect the vibration of the diaphragm 2. If the glue at the bonding position of the support 4 and the diaphragm 2 overflows, the glue will flow into the second annular groove 14 and cannot enter the normal working area of the diaphragm 2, thereby effectively ensuring the normal vibration of the diaphragm.

[0042] The preferred embodiments of the utility model have been specifically described above, but the utility model is not limited to the embodiments described above. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An ultra-thin speaker, characterized in that, The loudspeaker comprises a front cover, a diaphragm, a voice coil, a support, a pole piece, a magnetic steel and a magnetic bowl. The inner side edges of the support are uniformly provided with lightening grooves. The edge corners of the back of the support are provided with terminal connectors for connecting external power supply. The upper surface of the diaphragm is uniformly provided with reinforcing ribs along the length direction, and each reinforcing rib is arranged along the width direction of the diaphragm. The lower surface edge of the diaphragm is bonded to the upper surface edge of the support. The front cover is bonded to the upper surface edge of the diaphragm. The magnetic bowl is bonded to the lower surface edge of the support, and the terminal connectors on the support are located outside the magnetic bowl. The bottom of the magnetic steel is bonded to the inside of the magnetic bowl. The pole piece is bonded to the top of the magnetic steel. The voice coil is located in the support, and the top of the voice coil is bonded to the lower surface of the diaphragm. The magnetic steel and the pole piece are located in the voice coil. The voice coil is electrically connected to the terminal connectors.

2. The ultra-thin loudspeaker of claim 1, wherein, The edge corners of the support are provided with positioning protrusions, and the edge corners of the front cover are provided with insertion parts, which correspond to the positioning protrusions one by one.

3. The ultra-thin loudspeaker of claim 1 or 2, wherein, A first annular groove is provided on the diaphragm between the support and the voice coil, and the first annular groove is concave downward.

4. The ultra-thin loudspeaker of claim 3, wherein, A second annular groove is provided on the diaphragm between the support and the first annular groove, and the second annular groove is concave upward.

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