Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker, which comprises a vibration assembly, a yoke, and magnetic steel and a basin stand which are arranged on the yoke, the yoke is also provided with a plurality of magnet assemblies, each magnet assembly comprises a first magnet and a second magnet, and a gap is arranged between the first magnet and the second magnet; the vibrating assembly comprises a vibrating diaphragm and a voice coil which are connected with each other, the vibrating diaphragm is arranged on the basin frame, the voice coil is located in an area formed by the basin frame in a surrounding mode, the magnetic steel is arranged in the area formed by the voice coil in a surrounding mode, a plurality of wires are bonded to the outer side wall, away from the magnetic steel, of the voice coil, and at least part of the wires are located in the distance between the first magnet and the second magnet. According to the utility model, when the miniature loudspeaker works, the electrified wire moves up and down along with the voice coil to cut a magnetic induction line, so that the electrified wire is subjected to a corresponding ampere force, the current of the wire is changed, the magnitude of the force can be controlled, and the vibration state of the miniature loudspeaker is further controlled.

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 a commonly used electro-acoustic device, which is widely used in various portable electronic devices, such as mobile phones, laptop computers and hearing aids.

[0003] In recent years, with the rapid development of these portable electronic devices, people's requirements for the micro loudspeakers applied therein have become higher and higher. Therefore, large-amplitude micro loudspeakers or ultra-linear loudspeakers are rapidly popularizing. By using large-amplitude micro loudspeakers, the micro loudspeakers can generate greater sound volume and a wider dynamic range, thereby providing better sound quality and more realistic sound effects. However, when the existing large-amplitude micro loudspeaker products are in use, they will vibrate violently, resulting in inconsistent vibration at each position of the diaphragm, which affects the use effect of the micro loudspeaker. Summary of the Utility Model

[0004] 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 each position of the diaphragm due to violent vibration of the product.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0006] A micro loudspeaker, which comprises a vibration assembly, a yoke, a magnet disposed on the yoke and a chassis. A plurality of magnet components are further disposed on the yoke. Each magnet component includes a first magnet and a second magnet, and there is a spacing between the first magnet and the second magnet. The vibration assembly includes a diaphragm and a voice coil connected to each other. The diaphragm is disposed on the chassis, and the voice coil is located in the area surrounded by the chassis. The magnet is disposed in the area surrounded by the voice coil. A plurality of wires are bonded to the outer sidewall of the voice coil away from the magnet, and at least part of the wires is located in the spacing between the first magnet and the second magnet.

[0007] Further, in the micro loudspeaker of the utility model, there are four wires, and the four wires are respectively bonded at the four corner positions of the voice coil.

[0008] Further, in the micro loudspeaker of the utility model, there are four groups of magnets, and the four groups of magnets are respectively disposed at the four corner positions of the yoke.

[0009] Further, in the micro-speaker of the present utility model, a plurality of avoidance holes are provided on the yoke, and at least a part of the wires are arranged in the avoidance holes.

[0010] Further, in the micro-speaker of the present utility model, a first recessed portion and a second recessed portion are further provided on the yoke, the first magnet is arranged in the first recessed portion, and the second magnet is arranged in the second recessed portion.

[0011] Further, in the micro-speaker of the present utility model, the first recessed portion and the second recessed portion are arranged around the avoidance holes.

[0012] Further, in the micro-speaker of the present utility model, a plurality of protrusions are provided on the yoke, and the protrusions extend upward from the second recessed portion.

[0013] Further, in the micro-speaker of the present utility model, the voice coil is located above the vertical height of the yoke, and there is a spacing between the voice coil and the yoke in the vertical height.

[0014] Further, in the micro-speaker of the present utility model, a washer is further included, and the washer is arranged on the magnet.

[0015] Further, in the micro-speaker of the present utility model, a convex block is provided on the yoke, and a plurality of limiting blocks are provided on the speaker frame, and the convex block is arranged between the plurality of limiting blocks.

[0016] The beneficial effects of the present utility model are as follows: In the present utility model, charged wires are bonded at a plurality of different positions on the outer side wall of the voice coil, and a magnet assembly (i.e., a first magnet and a second magnet with a certain spacing) is arranged near the charged wires, and a magnetic field will be generated between the first magnet and the second magnet. When the micro-speaker works, since the charged wires are bonded to the outer side wall of the voice coil, the wires will move up and down following the voice coil. During the process of the wires moving up and down following the voice coil, the charged wires will cut the magnetic induction lines in the magnetic field generated by the first magnet and the second magnet. Therefore, the charged wires will be subjected to corresponding forces in the magnetic field generated by the first magnet and the second magnet, that is, the Ampere force F = BIL. In practical applications, by changing the current of the charged wires, the magnitude of the force received by the charged wires can be controlled, and further the vibration state of the corresponding positions of the voice coil and the diaphragm can be controlled to achieve the effect of controlling the vibration state of the micro-speaker. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the micro-speaker of the present utility model from a certain perspective in one embodiment;

[0018] Figure 2Schematic diagram of the structure of the micro speaker according to the present utility model from another perspective in one embodiment;

[0019] Figure 3 Exploded view of the structure of the micro speaker according to the present utility model from one perspective in one embodiment;

[0020] Figure 4 For Figure 1 Schematic diagram of the structure of the micro speaker shown from one perspective with some structures hidden;

[0021] Figure 5 For Figure 1 Schematic diagram of the structure of the micro speaker shown from one perspective with some more structures hidden;

[0022] Figure 6 For Figure 5 Schematic diagram of the structure of the micro speaker shown from another perspective;

[0023] Figure 7 For Figure 5 Schematic diagram of the structure of the micro speaker shown from yet another perspective.

[0024] Reference numeral description:

[0025] 1. Yoke; 11. Avoidance hole; 12. First recess; 13. Second recess; 14. Protrusion;

[0026] 2. Magnet;

[0027] 3. Frame; 31. Limiting block;

[0028] 4. Magnet assembly; 41. First magnet; 42. Second magnet;

[0029] 5. Diaphragm;

[0030] 6. Voice coil;

[0031] 7. Lead wire;

[0032] 8. Protrusion part;

[0033] 9. Washer. Detailed implementation mode

[0034] 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 accompanying drawings.

[0035] Please refer to Figures 1 to 7, the present utility model designs a micro speaker, which includes a vibration assembly, a yoke 1, a magnet 2 disposed on the yoke 1, and a chassis 3. A plurality of magnet assemblies 4 are further provided on the yoke 1. Each magnet assembly 4 includes a first magnet 41 and a second magnet 42, and there is a spacing between the first magnet 41 and the second magnet 42; the vibration assembly includes a diaphragm 5 and a voice coil 6 connected to each other. The diaphragm 5 is disposed on the chassis 3, the voice coil 6 is located in the area surrounded by the chassis 3, the magnet 2 is disposed in the area surrounded by the voice coil 6, and a plurality of wires 7 are bonded to the outer sidewall of the voice coil 6 away from the magnet 2, and at least part of the wires 7 are located in the spacing between the first magnet 41 and the second magnet 42.

[0036] The structural principle / working principle of the present utility model is briefly described as follows: In a micro speaker, when an electric current is applied to the voice coil 6, 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 intense vibration, the vibration of different positions of the diaphragm 5 will be inconsistent. To solve the above problems, the present utility model bonds charged wires 7 at multiple different positions on the outer sidewall of the voice coil 6, and a magnet assembly 4 (i.e., a first magnet 41 and a second magnet 42 with a certain spacing) is disposed near the charged wires 7, and a magnetic field will be generated between the first magnet 41 and the second magnet 42. When the micro speaker is working, since the charged wires 7 are bonded to the outer sidewall of the voice coil 6, the wires 7 will move up and down following the voice coil 6. During the process of the wires 7 moving up and down following the voice coil 6, the plurality of charged wires 7 will cut the magnetic induction lines in the magnetic field generated by the first magnet 41 and the second magnet 42. Therefore, the charged wires 7 will be subjected to corresponding forces in the magnetic field generated by the first magnet 41 and the second magnet 42, that is, the Ampere force F = BIL. In practical applications, by changing the current of the wires 7 at multiple different positions, the magnitude of the force received by the wires 7 can be controlled, and further the vibration states of different positions 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.

[0037] Further, in the micro speaker of the present utility model, four wires 7 are included, and the four wires 7 are respectively bonded at the four corner positions of the voice coil 6.

[0038] 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 wires 7 are respectively arranged at the four corner positions of the voice coil 6. Since the four corner positions of the voice coil 6 are the places where the vibration energy is relatively concentrated, by bonding the wires 7 at these corner positions and controlling the current magnitudes of the wires 7 at the four corners, the vibration state of the voice coil 6 can be controlled more effectively and quickly, and then the vibration state of the micro speaker can be controlled. That is, by setting different current magnitudes for the four wires 7, the vibration states at different positions of the voice coil can be controlled, thereby reducing the situation where the vibrations of different positions of the diaphragm are inconsistent.

[0039] Further, in the micro speaker of the present utility model, it includes four groups of magnets, and the four groups of magnets are respectively arranged at the four corner positions of the yoke.

[0040] In the above technical solution of the present utility model, the shape of the yoke is similar to a rectangular ring, the four groups of magnets are respectively arranged at the four corner positions of the yoke, and the position of each group of magnets corresponds to the position of the wire.

[0041] Further, in the micro speaker of the present utility model, a plurality of avoidance holes 11 are provided on the yoke 1, and at least part of the wires are arranged in the avoidance holes 11.

[0042] In the above technical solution of the present utility model, by providing a plurality of avoidance holes 11 on the yoke 1, when the wire 7 moves up and down following the voice coil 6, it can have a certain activity space to ensure that the wire 7 can move up and down.

[0043] Further, in the micro speaker of the present utility model, a first recess 12 and a second recess 13 are further provided on the yoke 1, the first magnet 41 is arranged in the first recess 12, and the second magnet 42 is arranged in the second recess 13.

[0044] Further, in the micro speaker of the present utility model, the first recess 12 and the second recess 13 are arranged around the avoidance holes 11.

[0045] In the above technical solution of the present utility model, by arranging the first recess 12 and the second recess 13 around the avoidance holes 11, the first magnet 41 and the second magnet 42 can be respectively arranged in the first recess 12 and the second recess 13, so that the magnet 2 and the first / second magnets are at different height positions in the vertical height direction, ensuring normal use.

[0046] Further, in the micro speaker of the present utility model, a plurality of protrusions 8 are provided on the yoke, and the protrusions 8 extend upward from the second recess.

[0047] In practical applications, four protrusions 8 can be provided, and the four protrusions 8 are respectively arranged at positions close to the four corners of the yoke.

[0048] Further, in the micro-speaker of the present utility model, the voice coil is located above the vertical height of the yoke, and there is a spacing between the voice coil and the yoke in the vertical height direction.

[0049] Further, in the micro-speaker of the present utility model, a washer 9 is further included, and the washer 9 is arranged on the magnet 2.

[0050] In practical applications, the washer 9 is arranged on the magnet 2, and the washer 9 is located in the area surrounded by the voice coil 6, that is, the washer 9 is located inside the voice coil 6.

[0051] Further, in the micro-speaker of the present utility model, a convex block 14 is provided on the yoke 1, and a plurality of limiting blocks 31 are provided on the chassis 3, and the convex block 14 is located between the plurality of limiting blocks 31.

[0052] In the above technical solution of the present utility model, for the convenience of installation and fixation, a convex block 14 is provided on the side edge of the yoke 1 along the horizontal width direction of the yoke 1. Correspondingly, two limiting blocks 31 are provided on the side edge of the chassis 3 extending along the horizontal width direction, and the convex block 14 is located between the two limiting blocks 31. During assembly, the convex block 14 on the yoke 1 is directly embedded between the two limiting blocks 31 on the chassis 3, and the chassis 3 and the yoke 1 can be quickly limited.

[0053] Please refer to Figures 1 to 7 , Embodiment 1 of the present utility model is: a micro-speaker, which sequentially includes a yoke 1, a chassis 3, a magnet 2, a washer 9, a voice coil 6, a lead wire 7, a magnet assembly, 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.

[0054] In this embodiment, the above-mentioned chassis 3 is arranged on the yoke 1. The shape of the above-mentioned chassis 3 is similar to a rectangular ring, and the shape of the above-mentioned yoke 1 is similar to a rectangular plate. For the convenience of installation and fixation, a convex block 14 is provided on the side edge of the yoke 1 along the horizontal width direction of the yoke 1. Correspondingly, two limiting blocks 31 are provided on the side edge of the chassis 3 extending along the horizontal width direction, and the convex block 14 is located between the two limiting blocks 31. During assembly, the convex block 14 on the yoke 1 is directly embedded between the two limiting blocks 31 on the chassis 3, and the chassis 3 and the yoke 1 can be quickly limited. In addition, four protrusions are provided on the yoke, and the four protrusions extend upward from the second recessed portion. As Figure 2 , Figure 3 and Figure 6As shown in the figure, a magnet 2 is provided on the yoke 1, and four relief holes 11 are provided at the corresponding positions of the four corners of the magnet 2 on the yoke 1. A set of magnet components is provided around each relief hole 11. The overall shape of the relief hole 11 is similar to an arc-shaped hole. Two recessed parts (i.e., the first recessed part 12 and the second recessed part 13) are provided at the corresponding positions of the inner and outer arc-shaped sides close to the arc-shaped hole. A first magnet 41 (i.e., the magnet at the periphery) is provided in the first recessed part 12. The shape of the first magnet 41 is similar to one-Nth of a ring. A second magnet 42 (i.e., the magnet at the interior) is provided in the second recessed part 13. The shape of the second magnet 42 is similar to a circle with a part of the area cut off, similar to a crescent shape.

[0055] In this embodiment, as Figure 4 shown, the magnet 2 is located in the area surrounded by the chassis 3, and the magnet 2 is arranged at the central position of the yoke 1. The shape of the magnet 2 is similar to a rectangular block with four corners missing. A washer 9 similar to the shape of the magnet 2 is provided above the magnet 2. The upper end of the magnet 2 is located in the area surrounded by the voice coil 6, and the remaining part of the magnet 2 extends out of the area surrounded by the voice coil 6 to contact the upper surface of the yoke 1.

[0056] In this embodiment, as Figure 5 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 1 in the vertical height direction, and there is a certain distance between the voice coil 6 and the yoke 1 in the vertical height direction. Wires 7 are bonded to the outer sidewalls at the four corners (i.e., the R corners of the voice coil) of the voice coil 6. Part of the wires 7 is bonded to the outer sidewall of the voice coil 6, and part of the wires 7 is inserted into the relief holes 11 on the yoke 1.

[0057] In summary, for the micro speaker provided by the present utility model: an energized wire is bonded at the corner position of the voice coil, and a magnet is added near the wire to form a magnetic field. When the micro speaker works, the energized wire will move up and down with the voice coil, thereby cutting the magnetic induction lines. Therefore, the energized wire will be subjected to a corresponding force, that is, the Ampere force F = BIL. By changing the current of the energized wire, the magnitude of the force can be controlled, and thus the vibration state of the micro speaker can be controlled.

[0058] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A micro speaker, characterized in that: It includes a vibration component, a yoke, a magnetic steel arranged on the yoke, and a basin frame. The yoke is also provided with a plurality of magnet components, each magnet component includes a first magnet and a second magnet, and there is a distance between the first magnet and the second magnet; the vibration component includes a diaphragm and a voice coil connected to each other, the diaphragm is arranged on the basin frame, the voice coil is located in the area surrounded by the basin frame, the magnetic steel is arranged in the area surrounded by the voice coil, and the voice coil has a plurality of wires bonded to the outer wall away from the magnetic steel, and at least part of the wires are located in the distance between the first magnet and the second magnet.

2. The micro speaker according to claim 1, characterized in that: It comprises four conducting wires which are respectively bonded to four corners of the voice coil.

3. The micro-speaker according to claim 1, characterized in that: It comprises four groups of magnets, which are respectively arranged at four corners of the yoke.

4. The micro-speaker according to claim 1, characterized in that: The yoke is provided with a plurality of avoidance holes, and at least part of the wires are arranged in the avoidance holes.

5. The micro-speaker according to claim 4, characterized in that: The yoke is further provided with a first recessed portion and a second recessed portion, the first magnet is arranged in the first recessed portion, and the second magnet is arranged in the second recessed portion.

6. The micro-speaker according to claim 5, characterized in that: The first recessed portion and the second recessed portion are arranged around the avoidance hole.

7. The micro-speaker according to claim 6, characterized in that: The yoke is provided with a plurality of protrusions, and the protrusions extend from the second recessed portion and extend upward.

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 protrusion, the basin frame is provided with a plurality of limit blocks, and the protrusion is arranged between the plurality of limit blocks.

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