Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker, which comprises a lead, a vibration assembly, a yoke iron, magnetic steel and a basin stand arranged on the yoke iron, the vibration assembly comprises a vibrating diaphragm and a voice coil which are connected with each other, the vibrating diaphragm is arranged on the basin stand, and the voice coil is positioned in an area surrounded by the basin stand; the magnetic steel is arranged on the yoke, an avoiding groove is formed in the bottom of the magnetic steel, and at least part of the magnetic steel is located in an area formed by the voice coil in a surrounding mode; the wire comprises a connecting part and a plurality of bonding parts connected with the connecting part, the plurality of bonding parts are respectively bonded on the outer side wall, far away from the magnetic steel, of the voice coil, and the connecting part is arranged in the avoiding groove. According to the utility model, by changing the current of the live wire, the magnitude of the acting force applied to the live wire can be controlled, and then the vibration transition states of the voice coil and the vibrating diaphragm are controlled, so that the effect of controlling the vibration state of the micro loudspeaker is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a micro loudspeaker. Background Art

[0002] As is well known, a micro loudspeaker is an electroacoustic device, which is widely used in various portable electronic devices, such as mobile phones, laptop computers and hearing aids. With the rapid development of these portable electronic devices, the requirements for the micro loudspeakers applied therein are also getting higher and higher. Therefore, large-amplitude micro loudspeakers or super-linear loudspeakers are rapidly popularizing. By using large-amplitude micro loudspeakers, the micro loudspeakers can generate greater sound volume and a wider dynamic range, thus providing better sound quality and more realistic sound effects. However, the existing large-amplitude micro loudspeaker products will vibrate violently during use, resulting in inconsistent vibration at various positions of the diaphragm, which affects the use effect of the micro loudspeaker. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a micro loudspeaker to solve the problem that the existing large-amplitude micro loudspeaker has inconsistent vibration at various positions of the diaphragm due to violent vibration of the product.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] A micro loudspeaker, which includes a wire, a vibration assembly, a yoke, a magnet, and a chassis arranged on the yoke. The vibration assembly includes a diaphragm and a voice coil connected to each other. The diaphragm is arranged on the chassis, and the voice coil is located in the area surrounded by the chassis. The magnet is arranged on the yoke, an avoidance groove is provided at the bottom of the magnet, and at least part of the magnet is located in the area surrounded by the voice coil. The wire includes a connecting part and a plurality of bonding parts connected to the connecting part. The plurality of bonding parts are respectively bonded to the outer side wall of the voice coil away from the magnet, and the connecting part is arranged in the avoidance groove.

[0006] Further, in the micro loudspeaker of the utility model, there are four bonding parts, and the four bonding parts are respectively located at the four corners of the voice coil.

[0007] Further, in the micro loudspeaker of the utility model, the connecting part includes three sub-wires intersecting at the same point. Two of the sub-wires are respectively connected to the bonding parts at the diagonal corners, and the other sub-wire extends along the horizontal length direction of the magnet.

[0008] Further, in the micro loudspeaker of the utility model, the connecting part has a distance from the bottom of the avoidance groove in the vertical height direction.

[0009] Furthermore, in the micro-speaker of the present utility model, the connecting portion has a spacing from the yoke in the vertical height direction.

[0010] Furthermore, in the micro-speaker of the present utility model, the relief groove includes three linear grooves intersecting at a point.

[0011] Furthermore, in the micro-speaker of the present utility model, a plurality of protrusions are provided on the yoke, and the protrusions extend upward in the vertical height direction.

[0012] Furthermore, in the micro-speaker of the present utility model, the voice coil is located above the vertical height of the yoke, and the voice coil has a spacing from the yoke in the vertical height.

[0013] Furthermore, in the micro-speaker of the present utility model, it further includes a washer, and the washer is arranged on the magnet.

[0014] Furthermore, in the micro-speaker of the present utility model, a plurality of limiting blocks are provided on the yoke, and a convex block is provided on the chassis, and the convex block is arranged between the plurality of limiting blocks.

[0015] The beneficial effect of the present utility model lies in that: the present utility model adds a corresponding charged wire, and the wire includes a connecting portion and a plurality of bonding portions connected to the connecting portion. On this basis, a relief groove is provided at the bottom of the magnet close to the yoke to arrange the connecting portion in the relief groove, and the plurality of bonding portions are bonded to a plurality of different positions on the outer sidewall of the voice coil (such as at the corner positions of the voice coil). Since the connecting portion is arranged in the relief groove of the magnet, and the magnet itself generates a corresponding magnetic field. When the micro-speaker works, since the plurality of bonding portions are bonded to the outer sidewall of the voice coil, the wire will move up and down following the voice coil. During the process of the wire moving up and down following the voice coil, the connecting portion of the wire will cut the magnetic induction lines in the magnetic field generated by the magnet. Therefore, the connecting portion of the wire will be subjected to a corresponding force in the magnetic field, that is, the Ampere force F = BIL. In practical applications, by changing the current of the wire, the magnitude of the force received by the wire can be controlled, and then the vibration state of the voice coil and the diaphragm can be controlled to achieve the effect of controlling the vibration state of the micro-speaker, and reduce the situation where the vibrations of different positions of the diaphragm are inconsistent due to the violent vibration of the product, that is, reduce the situations of rolling vibration and polarization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the micro-speaker of the present utility model from one perspective in one embodiment;

[0017] Figure 2 is a schematic structural diagram of the micro-speaker of the present utility model from another perspective in one embodiment;

[0018] Figure 3 It is an exploded view of the structure of the micro speaker according to the present utility model from a certain perspective in an embodiment;

[0019] Figure 4 is Figure 1 A schematic diagram of the structure of the micro speaker shown from a certain perspective after hiding some structures;

[0020] Figure 5 is Figure 4 A schematic diagram of the structure of the micro speaker shown from another perspective;

[0021] Figure 6 is Figure 4 A schematic diagram of the structure of the micro speaker shown from yet another perspective;

[0022] Figure 7 is Figure 1 A schematic diagram of the structure of the micro speaker shown from a certain perspective after hiding some structures again.

[0023] Label description:

[0024] 1. Lead wire; 11. Connection part; 12. Bonding part;

[0025] 2. Yoke; 21. Limit block; 22. Protrusion;

[0026] 3. Magnet; 31. Avoidance groove;

[0027] 4. Spider; 41. Protrusion;

[0028] 5. Diaphragm;

[0029] 6. Voice coil;

[0030] 7. Washer. Detailed implementation mode

[0031] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the drawings.

[0032] Please refer to Figures 1 to 7The utility model designs a miniature loudspeaker, which includes a wire 1, a vibration component, a yoke 2, a magnetic steel 3 and a basin 4 arranged on the yoke 2, the vibration component includes a diaphragm 5 and a voice coil 6 connected to each other, the diaphragm 5 is arranged on the basin 4, and the voice coil 6 is located in the area surrounded by the basin 4; the magnetic steel 3 is arranged on the yoke 2, and the magnetic steel 3 is provided with an avoidance groove 31 at the bottom near the yoke 2, and at least part of the magnetic steel 3 is located in the area surrounded by the voice coil 6; the wire 1 includes a connecting portion 11 and a plurality of bonding portions 12 connected to the connecting portion 11, the plurality of bonding portions 12 are respectively bonded to the outer side wall of the voice coil 6 away from the magnetic steel 3, and the connecting portion 11 is arranged in the avoidance groove 31.

[0033] The structural principle / working principle of the utility model is briefly described as follows: In a micro speaker, when the voice coil 6 is charged with current, the voice coil 6 will vibrate up and down. Since the voice coil 6 is connected to the diaphragm 5, the voice coil 6 will also drive the diaphragm 5 to vibrate. In a large-amplitude micro speaker, due to the relatively violent vibration, the vibration of each position of the diaphragm 5 will be inconsistent. In order to solve the above problem, the utility model adds a corresponding charged wire 1, and the wire 1 includes a connecting portion 11 and a plurality of bonding portions 12 connected to the connecting portion 11. On this basis, an avoidance groove 31 is provided at the bottom of the magnetic steel 3 close to the yoke 2, so that the connecting portion 11 is arranged in the avoidance groove 31, and the plurality of bonding portions 12 are bonded to a plurality of different positions of the outer wall of the voice coil 6 (such as the corner positions of the voice coil 6). Since the connecting portion 11 is arranged in the avoidance groove 31 of the magnetic steel 3, the magnetic steel 3 itself will generate a corresponding magnetic field. When the micro speaker is working, since the plurality of bonding portions 12 are bonded to the outer wall of the voice coil 6, the wire 1 will move up and down with the voice coil 6. When the wire 1 moves up and down following the voice coil 6, the connecting portion 11 of the wire 1 will cut the magnetic flux lines in the magnetic field generated by the magnet 3. Therefore, the connecting portion 11 of the wire 1 will be subjected to a corresponding force in the magnetic field, that is, the Ampere force F=BIL. In practical applications, by changing the current of the wire 1, the magnitude of the force on the wire 1 can be controlled, and then the vibration state of the voice coil 6 and the diaphragm 5 can be controlled to achieve the effect of controlling the vibration state of the micro speaker, reducing the inconsistent vibration of each position of the diaphragm 5 caused by the violent vibration of the product, that is, reducing the rolling vibration and polarization.

[0034] Furthermore, in the micro-speaker of the present invention, four adhesive portions 12 are included, and the four adhesive portions 12 are respectively located at four corners of the voice coil 6 .

[0035] In the above technical solution of the present utility model, the shape of the voice coil 6 is similar to a rectangular ring, and the four bonding parts 12 are respectively arranged at the four corner positions of the voice coil 6. Since the four corner positions of the voice coil 6 are where the vibration energy is relatively concentrated, by bonding the wire 1 at these corner positions, the vibration state can be controlled more effectively.

[0036] Further, in the micro-speaker of the present utility model, the connecting part 11 includes three sub-wires intersecting at the same point, where two sub-wires are respectively connected to the bonding parts 12 at the diagonal positions, and the other sub-wire extends along the horizontal length direction of the magnet 3.

[0037] In the above technical solution of the present utility model, by arranging three sub-wires intersecting at the same point, since two of the sub-wires are respectively connected to the bonding parts 12 at the diagonal positions, the two sub-wires will move up and down following the voice coil 6, and then drive the remaining one sub-wire to move up and down, so that all three sub-wires can cut the magnetic induction lines in the magnetic field generated by the magnet 3 to generate the Ampere force meeting the corresponding magnitude requirement, thereby controlling the vibration state of the micro-speaker.

[0038] Further, in the micro-speaker of the present utility model, the connecting part 11 has a spacing from the bottom of the avoidance groove 31 in the vertical height direction.

[0039] Further, in the micro-speaker of the present utility model, the connecting part 11 has a spacing from the yoke in the vertical height direction.

[0040] In the above technical solution of the present utility model, making the connecting part 11 have a certain spacing from both the bottom of the avoidance groove 31 and the yoke 2 in the vertical height direction enables the connecting part 11 to have a certain up and down movement space, ensuring that the connecting part 11 can move up and down following the voice coil 6.

[0041] Further, in the micro-speaker of the present utility model, the avoidance groove includes three straight grooves intersecting at one point.

[0042] In the above technical solution of the present utility model, by arranging three straight grooves, corresponding straight wires can be arranged in the straight grooves.

[0043] Further, in the micro-speaker of the present utility model, a plurality of protrusion parts 22 are provided on the yoke, and the protrusion parts 22 extend upward in the vertical height direction.

[0044] Further, in the micro-speaker of the present utility model, the voice coil is located above the vertical height of the yoke, and the voice coil has a spacing from the yoke in the vertical height.

[0045] Further, in the micro-speaker of the present utility model, a washer 7 is further included, and the washer 7 is disposed on the magnet 3.

[0046] In practical applications, the washer 7 is disposed on the magnet 3, and the washer 7 is located in the area surrounded by the voice coil 6, that is, the washer 7 is located inside the voice coil 6.

[0047] Further, in the micro-speaker of the present utility model, a plurality of limiting blocks 21 are provided on the yoke 2, and a convex block 41 is provided on the chassis 4, and the convex block 41 is disposed between the plurality of limiting blocks 21.

[0048] In practical applications, for the convenience of installation and fixation, two limiting blocks 21 are provided on the side of the yoke 2 along the horizontal length direction of the yoke 2. Correspondingly, a convex block 41 is provided on the side of the chassis 4 extending along the horizontal length direction, and the convex block 41 is located between the two limiting blocks 21. During assembly, the convex block 41 on the chassis 4 is directly embedded between the two limiting blocks 21 on the yoke 2, and the chassis 4 and the yoke 2 can be quickly limited.

[0049] Please refer to Figures 1 to 7 , Embodiment 1 of the present utility model is: a micro-speaker, which sequentially includes a yoke 2, a chassis 4, a magnet 3, a washer 7, a voice coil 6, a lead wire 1, and a diaphragm 5 from bottom to top. The following will specifically introduce the above components in combination with Figures 1 to 7 specifically introduce the above components.

[0050] In this embodiment, as Figure 3 shown, the above-mentioned chassis 4 is disposed on the yoke 2. The shape of the above-mentioned chassis 4 is similar to a rectangular ring, and the shape of the above-mentioned yoke 2 is similar to a rectangular plate. For the convenience of installation and fixation, two limiting blocks 21 are provided on the side of the yoke 2 along the horizontal length direction of the yoke 2. Correspondingly, a convex block 41 is provided on the side of the chassis 4 extending along the horizontal length direction, and the convex block 41 is located between the two limiting blocks 21. During assembly, the convex block 41 on the chassis 4 is directly embedded between the two limiting blocks 21 on the yoke 2, and the chassis 4 and the yoke 2 can be quickly limited. In addition, four protruding portions are provided on the yoke. The four protruding portions extend out from the side of the yoke along the length direction and extend upward. As Figure 3 shown, a magnet 3 is provided on the yoke 2. The magnet 3 is located in the area surrounded by the chassis 4, and the magnet 3 is disposed at the central position of the yoke 2. The shape of the magnet 3 is similar to a rectangular block with four corners missing. A washer 7 similar to the shape of the magnet 3 is provided above the magnet 3. The upper end of the magnet 3 is located in the area surrounded by the voice coil 6. The lower end of the magnet 3 extends out of the area surrounded by the voice coil 6 to contact the upper surface of the yoke 2. A relief groove 31 is provided at the bottom of the magnet 3.

[0051] In this embodiment, asFigure 4 and Figure 5 As shown, the shape of the voice coil 6 is similar to a rectangular ring. The upper end of the voice coil 6 is connected to the diaphragm 5. The voice coil 6 is located above the yoke 2, and there is a certain distance between the voice coil 6 and the yoke 2 in the vertical height direction. At the outer walls of the four corners of the voice coil 6 (i.e., the R corners of the voice coil), four bonding parts 12 of the wire 1 are bonded. It should be noted that, as Figure 6 shown, the wire 1 includes a connecting part 11 and four bonding parts 12 connected to the connecting part 11. The above-mentioned connecting part 11 is arranged in the avoiding groove 31, and there is a certain distance between the connecting part 11 and the bottom of the avoiding groove 31 and the yoke 2 in the vertical height direction, so that the connecting part 11 can move up and down with the voice coil 6. In addition, in this embodiment, the connecting part 11 includes three sub-wires intersecting at the same point. Two of the sub-wires are respectively connected to the bonding parts 12 at the diagonal corners, and the other sub-wire extends along the horizontal length direction of the magnet 3. It should be noted that the shape of the above-mentioned avoiding groove 31 is adapted to the shape of the above-mentioned connecting part 11. As Figure 7 shown, the avoiding groove includes three straight grooves intersecting at a point. One of the straight grooves extends along the horizontal length direction of the magnet, and the cross-sections of the other two straight grooves are in an X shape.

[0052] In summary, the micro-speaker provided by the present invention: adds a charged wire 1, the wire 1 includes a connecting part 11 and a plurality of bonding parts 12 connected to the connecting part 11. The plurality of bonding parts 12 are bonded at the corner positions of the voice coil 6, and the connecting part 11 is arranged in the avoiding groove 31 at the bottom of the magnet 3. By generating a magnetic field with the magnet 3, when the micro-speaker works, the charged wire 1 will move up and down with the voice coil 6, and thus cut the magnetic induction line. The charged wire 1 will therefore be subjected to a corresponding force, that is, the Ampere force F = BIL. By changing the current of the charged wire 1, the magnitude of the force can be controlled, and then the vibration state of the micro-speaker can be controlled.

[0053] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A micro speaker, characterized in that: The invention comprises a conducting wire, a vibration component, a yoke, a magnetic steel and a basin frame arranged on the yoke, wherein the vibration component comprises a diaphragm and a voice coil connected to each other, the diaphragm is arranged on the basin frame, and the voice coil is located in an area surrounded by the basin frame; the magnetic steel is arranged on the yoke, a avoidance groove is provided at the bottom of the magnetic steel, and at least part of the magnetic steel is located in an area surrounded by the voice coil; the conducting wire comprises a connecting part and a plurality of bonding parts connected to the connecting part, the plurality of bonding parts are respectively bonded to the outer side wall of the voice coil away from the magnetic steel, and the connecting part is arranged in the avoidance groove.

2. The micro-speaker according to claim 1, characterized in that: It comprises four bonding parts, which are respectively located at four corners of the voice coil.

3. The micro-speaker according to claim 2, characterized in that: The connecting portion includes three sub-conductors intersecting at the same point, wherein two sub-conductors are respectively connected to the bonding portions at the diagonals, and the other sub-conductor extends along the horizontal length direction of the magnetic steel.

4. The micro-speaker according to claim 1, characterized in that: The connection portion has a distance from the groove bottom of the avoidance groove in the vertical height direction.

5. The micro-speaker according to claim 1, characterized in that: The connection portion has a distance from the yoke in a vertical height direction.

6. The micro-speaker according to claim 1, characterized in that: The avoidance groove includes three straight grooves intersecting at one point.

7. The micro-speaker according to claim 1, characterized in that: The yoke is provided with a plurality of protrusions, and the protrusions extend upward along the vertical height direction.

8. The micro-speaker according to claim 1, characterized in that: The voice coil is located above the vertical height of the yoke, and there is a distance between the voice coil and the yoke in the vertical height.

9. The micro-speaker according to claim 1, wherein: It also includes a washer, and the washer is arranged on the magnetic steel.

10. The micro-speaker according to claim 1, characterized in that: The yoke is provided with a plurality of limit blocks, the basin frame is provided with a convex block, and the convex block is arranged between the plurality of limit blocks.

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