Coaxial double-magnetic-plane horn

Abstract

A coaxial double-magnetic-plane horn relates to the technical field of horns and comprises a shell, a magnet, a magnet, a magnet, a magnet, a magnet and a magnet, the diaphragm is arranged in the shell; the voice coil is arranged on the upper surface of the diaphragm; the first magnetic group and the second magnetic group are both located in the containing cavity, the first magnetic group and the second magnetic group are arranged on the upper side and the lower side of the diaphragm respectively, and the first magnetic group and the second magnetic group are matched to provide a magnetic field for the voice coil, so that the voice coil can move on the diaphragm after being connected with an electric signal. According to the technical scheme, the first magnetic group and the second magnetic group respectively emit magnetic fields from the upper side and the lower side of the voice coil, the magnetic field intensity of the position where the voice coil is located is enhanced, and therefore the tone quality of the loudspeaker and the overall sensitivity of the loudspeaker are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a coaxial double-magnetic plane loudspeaker. Background Art

[0002] A speaker, also known as a loudspeaker, is an electroacoustic device that converts electrical signals into sound. It is an indispensable component of the sound system and is widely used in home theaters, car audio, portable music players, smartphones, tablets, computers and other electronic devices.

[0003] Existing speakers usually include a diaphragm, a voice coil (a coil made of thin copper wire), and a magnet, which are arranged from top to bottom. The working principle is: when an electrical signal is connected to the voice coil, the voice coil moves under the magnetic field of the magnet, thereby driving the diaphragm to vibrate. The back and forth vibration of the diaphragm will cause the surrounding air molecules to vibrate, and these vibrations will spread in the form of waves, that is, sound waves. The frequency and amplitude of the sound waves match the original electrical signal, thereby reproducing the sound.

[0004] However, the structure of the existing speakers is relatively simple, and the sound quality and overall sensitivity of the speakers are relatively low. Utility Model Content

[0005] The purpose of the utility model is to address the defects and shortcomings of the prior art. The utility model provides a coaxial dual-magnetic planar speaker, which has the advantages of improving the sound quality of the speaker and the overall sensitivity of the speaker.

[0006] The technical solution adopted by the utility model is: a coaxial dual-magnetic planar speaker, comprising:

[0007] A housing having a receiving cavity therein;

[0008] A diaphragm is disposed in the housing;

[0009] a voice coil disposed on the upper surface of the diaphragm; and

[0010] A first magnetic group and a second magnetic group, wherein the first magnetic group and the second magnetic group are both located in the accommodating cavity, the first magnetic group and the second magnetic group are respectively arranged on the upper and lower sides of the diaphragm, and the first magnetic group and the second magnetic group cooperate to provide a magnetic field to the voice coil so that the voice coil can move on the diaphragm after the electrical signal is connected.

[0011] Preferably, the first magnetic group and the second magnetic group are coaxially arranged, and a plane where the first magnetic group is located is parallel to a plane where the second magnetic group is located.

[0012] Preferably, the first magnetic group includes at least one first magnet, the second magnetic group includes at least one second magnet, and the first magnet and the second magnet are symmetrically arranged on the upper and lower sides of the diaphragm.

[0013] Preferably, a soldering pad is provided on the surface of the shell, the voice coil is electrically connected to a wire, a wire threading groove is opened on the inner wall of the shell for the wire to pass through, and the end of the wire away from the voice coil passes through the wire threading groove and then extends upward and is welded to the soldering pad.

[0014] Preferably, a plurality of sound outlet holes are arranged on the bottom side of the shell, the plurality of sound outlet holes are evenly distributed on the bottom of the shell, and the plurality of sound outlet holes are communicated with the accommodating cavity.

[0015] Preferably, positioning grooves for positioning the first magnetic group and the second magnetic group are respectively provided on the upper and lower sides of the interior of the shell.

[0016] Preferably, a through slot is provided at the center of the shell, the through slot runs through the upper and lower sides of the shell, and through holes matching the through slot are provided on the first magnet and the second magnet.

[0017] Preferably, a limiting ring for limiting the movement of the voice coil is provided on the diaphragm, the limiting ring is adapted to the voice coil, and the voice coil is accommodated in the limiting ring.

[0018] Preferably, the shell includes an upper shell and a lower shell, the upper shell cooperates with the lower shell to form a receiving cavity, and the upper shell is accommodated in the lower shell.

[0019] Preferably, the inner wall of the lower shell is provided with a positioning protrusion for positioning the diaphragm, the edge of the bottom side of the diaphragm abuts against the positioning protrusion, and the bottom side edge of the upper shell abuts against the edge of the top surface of the diaphragm.

[0020] After adopting the above technical solution, the beneficial effects of the utility model are:

[0021] The present application increases the magnetic field strength of the voice coil by arranging the first magnetic group and the second magnetic group on the upper and lower sides of the voice coil, thereby improving the sound effect of the entire speaker, that is, improving the sound quality of the speaker and improving the overall sensitivity of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0024] Figure 2 is a cross-sectional view of this embodiment;

[0025] Figure 3 is an exploded view of this embodiment.

[0026] Explanation of the accompanying drawings: 1. Shell; 11. Accommodating cavity; 12. Threading groove; 13. Sound outlet hole; 14. Positioning groove; 15. Through groove; 16. Upper shell; 17. Lower shell; 171. Positioning ridge; 2. Diaphragm; 21. Limiting ring; 3. Voice coil; 4. First magnet; 41. Through hole; 5. Second magnet; 6. Soldering pad. DETAILED DESCRIPTION

[0027] The following will be combined with the attached embodiment of the present utility model Figure 1-3 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "back", "side", "circumferential" and the like in the present invention indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the words "first", "second" and the like are only used to distinguish multiple components or structures with the same or similar structures, and do not represent any special limitation on the setting order or connection relationship.

[0029] This embodiment relates to a coaxial dual-magnetic planar speaker, referring to Figures 1 to 3 , including a shell 1, a diaphragm 2, a voice coil 3, and a first magnetic group and a second magnetic group arranged in the shell 1, wherein a accommodating cavity 11 is arranged inside the shell 1, the diaphragm 2 is fixedly installed in the accommodating cavity 11, the voice coil 3 is installed on the upper surface of the diaphragm 2, the first magnetic group and the second magnetic group are respectively arranged on the upper and lower sides of the diaphragm 2, and the first magnetic group and the second magnetic group cooperate to provide a magnetic field to the voice coil 3, so that the voice coil 3 can move on the diaphragm 2 after the electrical signal is turned on.

[0030] It can be understood that by arranging the first magnetic group and the second magnetic group on the voice coil 3, the first magnetic group and the second magnetic group are used to provide magnetic fields on the upper and lower sides of the voice coil 3 respectively, thereby enhancing the magnetic field strength at the position where the voice coil 3 is located, so that after the voice coil 3 is connected to the electrical signal, the voice coil 3 moves to drive the diaphragm 2 to vibrate, and the diaphragm 2 drives the air in the accommodating cavity 11 to vibrate, so that the electrical signal is converted into sound, thereby realizing sound reproduction, and the enhanced magnetic field can improve the sound quality of the speaker, and also improve the overall sensitivity of the speaker.

[0031] Furthermore, the first magnetic group and the second magnetic group are coaxially arranged, and the plane where the first magnetic group and the second magnetic group are located is parallel to the plane where the second magnetic group is located.

[0032] It can be understood that by arranging the first magnetic group and the second magnetic group coaxially and making the planes in which the first magnetic group and the second magnetic group are located parallel to each other, the magnetic fields generated by the first magnetic group and the second magnetic group are more stable, so that the voice coil 3 can move stably on the diaphragm 2 after the electrical signal is turned on.

[0033] Furthermore, the first magnetic group includes at least one first magnet 4, the second magnetic group includes at least one second magnet 5, and the first magnet 4 and the second magnet 5 are symmetrically arranged on the upper and lower sides of the diaphragm 2. In this embodiment, the number of the first magnet 4 in the first magnetic group and the number of the second magnet 5 in the second magnetic group are both one, and in other embodiments, the first magnet 4 and the second magnet 5 can also be set to other numbers, which is not limited here.

[0034] It can be understood that the first magnet 4 and the second magnet 5 can stably provide magnetic fields to the upper and lower sides of the diaphragm 2, that is, the first magnet 4 and the second magnet 5 can stably provide magnetic fields to the voice coil 3, and the two magnetic fields are superimposed, thereby increasing the magnetic field strength at the position of the voice coil 3.

[0035] Furthermore, a soldering pad 6 is provided on the surface of the shell 1, and the soldering pad 6 is fixedly provided on the upper surface of the shell 1. The voice coil 3 is electrically connected to a wire. A wire threading groove 12 for passing the wire through is opened on the inner wall of the shell 1, and one end of the wire away from the voice coil 3 passes through the wire threading groove 12 and then extends upward and is welded to the soldering pad 6.

[0036] It can be understood that by extending the wire through the wire threading groove 12 to the soldering pad 6, the current transmission and signal transmission of the voice coil 3 inside the shell 1 can be realized, so that the voice coil 3 can move on the diaphragm 2 after receiving the electrical signal. At the same time, the soldering pad 6 can also conduct the heat in the accommodating cavity 11 to the external environment, thereby preventing the coil from overheating and ensuring the stability of the coil operation.

[0037] Furthermore, a plurality of sound outlet holes 13 are provided on the bottom side of the housing 1, and the plurality of sound outlet holes 13 are evenly distributed on the bottom of the housing 1, and the plurality of sound outlet holes 13 are all connected to the accommodating cavity 11. The sound generated by the air vibration driven by the diaphragm 2 is transmitted to the outside of the housing 1 through the plurality of sound outlet holes 13, so that the sound quality of the transmitted sound is better.

[0038] Furthermore, positioning grooves 14 for positioning the first magnetic group and the second magnetic group are respectively provided on the upper and lower sides of the interior of the housing 1 .

[0039] It can be understood that during assembly, by placing the first magnetic group and the second magnetic group in the two positioning grooves 14 respectively, the first magnetic group and the second magnetic group can be quickly positioned, the operation is simple and convenient, and the production efficiency is improved.

[0040] Furthermore, a through slot 15 is provided at the center of the shell 1 , and the through slot 15 passes through the upper and lower sides of the shell 1 , and through holes 41 matching with the through slot 15 are provided on the first magnet 4 and the second magnet 5 .

[0041] That is, by setting the through groove 15 and the through hole 41, when the diaphragm 2 vibrates to drive the vibration of the surrounding air, the sound generated can also be transmitted to the outside of the shell 1 through the through hole 41 and the through groove 15, further ensuring the sound quality effect of the entire speaker.

[0042] Furthermore, a limiting ring 21 for limiting the movement of the voice coil 3 is provided on the diaphragm 2 . The limiting ring 21 is matched with the voice coil 3 , and the voice coil 3 is accommodated in the limiting ring 21 .

[0043] When the voice coil 3 is connected to an electrical signal, since the voice coil 3 is in the magnetic field of the first magnet 4 and the second magnet 5, the voice coil 3 moves relative to the diaphragm 2 under the action of the magnetic field force. At this time, the limit ring 21 can limit the diaphragm 2, so that the voice coil 3 moves within a limited area, so that the voice coil 3 can move stably relative to the diaphragm 2, and the diaphragm 2 is not easily displaced.

[0044] Furthermore, the housing 1 includes an upper shell 16 and a lower shell 17 . The upper shell 16 and the lower shell 17 cooperate to form a receiving chamber 11 , and the upper shell 16 is accommodated in the lower shell 17 .

[0045] Through the above arrangement, the upper shell 16 can seal the accommodating cavity 11 in the lower shell 17, the assembly process is simple, the production efficiency is improved, the structure is compact, and the production cost is reduced.

[0046] Furthermore, the inner wall of the lower shell 17 is provided with a positioning protrusion 171 for positioning the diaphragm 2. The positioning protrusion 171 is arranged along the circumferential direction of the lower shell 17. The edge of the bottom side of the diaphragm 2 abuts against the low-position protrusion, and the bottom side of the upper shell 16 abuts against the edge of the top of the diaphragm 2.

[0047] It can be understood that by setting the positioning protrusion 171, the diaphragm 2 can be quickly positioned, and at the same time, the bottom side of the upper shell 16 is abutted against the edge of the top of the diaphragm 2, that is, the upper shell 16 and the positioning protrusion 171 cooperate to fix the diaphragm 2, so that the diaphragm 2 is not easily displaced during vibration, thereby ensuring the stability of the diaphragm 2.

[0048] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A coaxial dual-magnetic planar speaker, characterized in that: include: A housing (1) having a receiving chamber (11) disposed therein; A diaphragm (2) is arranged in the housing (1); a voice coil (3) disposed on the upper surface of the diaphragm (2); and A first magnetic group and a second magnetic group, wherein the first magnetic group and the second magnetic group are both located in the accommodating cavity (11), the first magnetic group and the second magnetic group are respectively arranged on the upper and lower sides of the diaphragm (2), and the first magnetic group and the second magnetic group cooperate to provide a magnetic field to the voice coil (3), so that the voice coil (3) can move on the diaphragm (2) after the electrical signal is connected.

2. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: The first magnetic group and the second magnetic group are coaxially arranged, and a plane where the first magnetic group is located is parallel to a plane where the second magnetic group is located.

3. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: The first magnetic group includes at least one first magnet (4), the second magnetic group includes at least one second magnet (5), and the first magnet (4) and the second magnet (5) are symmetrically arranged on the upper and lower sides of the diaphragm (2).

4. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: A soldering pad (6) is provided on the surface of the shell (1), the voice coil (3) is electrically connected to a wire, and a threading groove (12) for the wire to pass through is provided on the inner wall of the shell (1), and an end of the wire away from the voice coil (3) passes through the threading groove (12), extends upward, and is soldered to the soldering pad (6).

5. The coaxial dual-magnetic planar speaker according to claim 4, characterized in that: A plurality of sound outlet holes (13) are arranged on the bottom side of the shell (1), the plurality of sound outlet holes (13) are evenly distributed on the bottom of the shell (1), and the plurality of sound outlet holes (13) are all connected to the accommodating cavity (11).

6. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: Positioning grooves (14) for positioning the first magnetic group and the second magnetic group are respectively provided on the upper and lower sides of the interior of the shell (1).

7. The coaxial dual-magnetic planar speaker according to claim 3, characterized in that: A through slot (15) is provided at the center of the shell (1), the through slot (15) runs through the upper and lower sides of the shell (1), and through holes (41) matching the through slot (15) are provided on the first magnet (4) and the second magnet (5).

8. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: The diaphragm (2) is provided with a limiting ring (21) for limiting the movement of the voice coil (3); the limiting ring (21) is adapted to the voice coil (3), and the voice coil (3) is accommodated in the limiting ring (21).

9. The coaxial dual-magnetic planar speaker according to claim 1, characterized in that: The housing (1) comprises an upper shell (16) and a lower shell (17); the upper shell (16) cooperates with the lower shell (17) to form a receiving chamber (11), and the upper shell (16) is received in the lower shell (17).

10. The coaxial dual-magnetic planar speaker according to claim 9, characterized in that: The inner wall of the lower shell (17) is provided with a positioning protrusion (171) for positioning the diaphragm (2), the edge of the bottom side of the diaphragm (2) abuts against the positioning protrusion (171), and the bottom side edge of the upper shell (16) abuts against the edge of the top surface of the diaphragm (2).

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