A speaker and a sound equipment

Abstract

The application discloses a loudspeaker and a loudspeaker device, and the loudspeaker comprises a sound film, a voice coil, a first magnetic guide, a magnet and a second magnetic guide; the first magnetic guide, the magnet and the second magnetic guide are sequentially and contactingly arranged in layers, the second magnetic guide extends to the opposite position of the first magnetic guide, and the inclined magnetic gap with a magnetic field is formed between the first magnetic guide and the second magnetic guide; the inclined magnetic gap is arranged in an inclined mode; and the inclined magnetic gap is filled with a magnetic fluid; the sound film is provided with an inclined bending part arranged in an inclined bending mode around the edge; the voice coil is arranged on the inclined bending part; and the inclined bending part is inserted into the magnetic fluid in the inclined magnetic gap. The loudspeaker of the application cancels the suspension edge and the elastic part, directly arranges the voice coil on the sound film, and meets the demand of miniaturization of the loudspeaker to the maximum, and meanwhile, the problems of abnormal sound and damage do not occur, and the problem of insufficient sound pressure does not occur.

Description

Technical Field

[0001] This invention relates to the field of loudspeaker technology, and more particularly to a loudspeaker and a sound-emitting device. Background Technology

[0002] Traditional loudspeaker magnetic circuits, such as Figure 1 The diagram shows a structure consisting of a washer, a magnet, and a T-iron. A voice coil is placed between the magnetic gap between the washer and the T-iron, and is connected to a frame, which in turn connects to a diaphragm. When an electrical signal is input to the voice coil, it vibrates vertically under the influence of the magnetic field within the gap. The amplitude of this vibration is transmitted to the diaphragm through the frame. This vibration of the diaphragm then produces sound. The diaphragm is typically supported by a suspension edge and elastic elements. The frame, through which the voice coil is connected, maintains its horizontal centering through the gap between the washer and the T-iron, while simultaneously generating vertical vibration.

[0003] To meet the requirements of miniaturization, current loudspeakers generally reduce the size of the surround and elastic components, and also make the surround, diaphragm, dust cover, elastic components, frame, and voice coil lighter. However, reducing the size of the surround and elastic components does not result in a high degree of miniaturization, and it leads to an increase in their own frequency response. Furthermore, by making the surround, diaphragm, dust cover, elastic components, frame, and voice coil lighter, the lowest resonant frequency of the loudspeaker ultimately increases, while the low-frequency reproduction frequency decreases.

[0004] To lower the lowest resonant frequency of a loudspeaker, the elastic element with a relatively high frequency is removed. However, without the elastic element, it is difficult for the voice coil to remain centered in the gap between the washer and the T-iron. The voice coil will come into contact with or collide with the washer or T-iron, causing quality problems such as noise and damage. To avoid this problem, the industry has also increased the gap between the washer and the T-iron, but this will reduce the magnetic flux of the magnetic gap, resulting in insufficient sound pressure. Summary of the Invention

[0005] The purpose of this invention is to provide a loudspeaker and a sound-enhancing device that can maximize miniaturization while reducing the minimum resonant frequency, and the diaphragm can be kept in a horizontal center, making it less prone to problems such as abnormal noise, damage and insufficient sound pressure.

[0006] This invention discloses a loudspeaker, including a diaphragm, a voice coil, a first magnetic conductor, a magnet, and a second magnetic conductor; the first magnetic conductor, the magnet, and the second magnetic conductor are stacked and contacted in sequence, the second magnetic conductor extends to a position opposite to the first magnetic conductor, forming an inclined magnetic gap with a magnetic field between them, the inclined magnetic gap is inclined and filled with a magnetic fluid; the edge of the diaphragm is provided with an inclined bending portion, and the voice coil is disposed on the inclined bending portion; the inclined bending portion is inserted into the magnetic fluid in the inclined magnetic gap.

[0007] Optionally, the inclination angle of the inclined magnetic gap and the inclined bending part is 30-60 degrees.

[0008] Optionally, the inclination angle of the inclined magnetic gap and the inclined bending part is 45 degrees.

[0009] Optionally, the magnetic fluid in the inside and outside of the inclined bending part is filled integrally.

[0010] Optionally, the magnetic fluid is filled in the area with the strongest magnetic induction in the inclined magnetic gap.

[0011] Optionally, the material of the diaphragm is any one of aluminum, polyethylene terephthalate, polyimide, polyether ether ketone or magnesium.

[0012] Optionally, the voice coil is wound on the inclined bending part.

[0013] Optionally, the second magnetic conducting member comprises a first sub magnetic conducting member and a second sub magnetic conducting member, the first sub magnetic conducting member is arranged in contact with the magnet in layers, and the second sub magnetic conducting member is connected with the first sub magnetic conducting member; the second sub magnetic conducting member extends to the opposite position of the first magnetic conducting member to form the inclined magnetic gap with the first magnetic conducting member.

[0014] Optionally, the magnet, the first sub magnetic conducting member and the second sub magnetic conducting member surround the first inner cavity, and the first inner cavity communicates with the inclined magnetic gap.

[0015] The application further discloses a loudspeaker device comprising the loudspeaker.

[0016] The loudspeaker of the application cancels the suspension edge and the elastic member, and directly arranges the voice coil on the diaphragm, thereby meeting the demand of miniaturization of the loudspeaker to the maximum extent. Meanwhile, the inclined magnetic gap is arranged in an inclined manner, the magnetic fluid is filled in the inclined magnetic gap, the inclined bending part in an inclined and bent manner is inserted into the magnetic fluid in the inclined magnetic gap, and the voice coil is directly arranged on the inclined bending part. When the diaphragm vibrates up and down, the magnetic fluid wraps the inclined bending part due to the block of the inclined magnetic gap, the inclined bending part and the magnetic fluid, the inclined bending part can move to drive the diaphragm to vibrate, so that the diaphragm can be kept in the center of the horizontal direction, the amplitude direction of the voice coil is also kept in the center, the contact collision is avoided, the problem of abnormal sound and damage caused by the contact collision without the suspension edge and the elastic member is solved, and the problem of insufficient sound pressure is also avoided. In addition, the voice coil of the application is directly arranged on the diaphragm, and the diaphragm has the function of the voice coil, so that the loudspeaker is further miniaturized. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the embodiments of the invention and illustrate implementation methods, and together with the textual description, explain the principles of the invention. Obviously, the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of an existing loudspeaker;

[0019] Figure 2 This is a schematic diagram of a loudspeaker according to an embodiment of the present invention.

[0020] Among them, 1. Diaphragm; 11. Inclined bending part; 2. Voice coil; 3. Magnet; 4. Second magnetic conductor; 41. First sub-magnetic conductor; 42. Second sub-magnetic conductor; 5. Inclined magnetic gap; 6. Magnetorheological fluid; 7. First inner cavity; 8. First magnetic conductor; 10. Washer; 20. T-iron; 30. Frame; 40. Suspension edge; 50. Dust cover; 60. Elastic element. Detailed Implementation

[0021] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, the invention can be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0022] Traditional loudspeaker magnetic circuits, such as Figure 1 The diagram shown consists of a washer 10, a magnet 3, and a T-iron 20. A voice coil 2 is placed between the magnetic gap between the washer 10 and the T-iron 20, and is connected to a frame 30, which in turn is connected to a diaphragm 1. When an electrical signal is input to the voice coil 2, it vibrates vertically under the influence of the magnetic field within the magnetic gap. The amplitude of the voice coil 2 is transmitted to the diaphragm 1 through the frame 30. This causes the diaphragm 1 to vibrate the air and produce sound. The diaphragm 1 is typically supported by a suspension edge 40 and an elastic element 60. Simultaneously, the frame 30 ensures that the voice coil 2 remains centered horizontally through the gap between the washer 10 and the T-iron 20, while simultaneously generating vertical amplitude.

[0023] In order to meet the requirement of miniaturization, the suspension 40 and the elastic member 60 are generally made small in size, and the suspension 40, the diaphragm 1, the dust cover 50, the elastic member 60, the skeleton 30 and the voice coil 2 are also made light. However, the suspension 40 and the elastic member 60 are not made small in size to a high degree, and the suspension 40, the diaphragm 1, the dust cover 50, the elastic member 60, the skeleton 30 and the voice coil 2 are also made light, which results in an increase in the frequency of the suspension 40 and the elastic member 60, and an increase in the lowest resonance frequency of the loudspeaker and a decrease in the low frequency reproduction frequency.

[0024] In order to reduce the lowest resonance frequency of the loudspeaker, the elastic member 60 with a high frequency is removed. However, without the elastic member 60, the voice coil 2 is difficult to be kept at the center of the gap between the bobbin 10 and the T iron 20, and the voice coil 2 is in contact with the bobbin 10 or the T iron 20, which results in the quality problems such as abnormal sound and damage. In order to avoid the problem, the gap between the bobbin 10 and the T iron 20 is increased, which results in a decrease in the magnetic flux of the magnetic gap and the problem of insufficient sound pressure.

[0025] In order to meet the requirement of miniaturization of the loudspeaker and solve the above problems, the present application provides a loudspeaker. The present application will be described in detail below with reference to the accompanying drawings and optional embodiments.

[0026] As shown in Figure 2 As an embodiment of the present application, a loudspeaker is disclosed, which comprises a diaphragm 1, a voice coil 2, a first magnetic guide 8, a magnet 3, a second magnetic guide 4; the first magnetic guide 8, the magnet 3 and the second magnetic guide 4 are sequentially and in contact, and the second magnetic guide 4 extends to the opposite position of the first magnetic guide 8 to form an inclined magnetic gap 5 with a magnetic field between the first magnetic guide 8 and the second magnetic guide 4, the inclined magnetic gap 5 is inclined, and the inclined magnetic gap 5 is filled with a magnetic fluid 6; the diaphragm 1 is provided with an inclined bending part 11 which is inclined and bent around the edge, and the voice coil 2 is arranged on the inclined bending part 11; the inclined bending part 11 is inserted into the magnetic fluid 6 in the inclined magnetic gap 5.

[0027] The loudspeaker of the present application cancels the suspension 40 and the elastic member 60 at the same time, and directly sets the voice coil 2 on the sound film 1, which meets the demand of miniaturization of the loudspeaker to the maximum extent, and sets the inclined magnetic gap 5 in an inclined manner, fills the magnetic fluid 6 in the inclined magnetic gap 5, inserts the inclined bending part 11 which is in an inclined and bent manner into the magnetic fluid 6 in the inclined magnetic gap 5, and directly sets the voice coil 2 on the inclined bending part 11. When the sound film 1 vibrates up and down, the magnetic fluid 6 wraps the inclined bending part 11 due to the block of the inclined magnetic gap 5, the inclined bending part 11 and the magnetic fluid 6, and the inclined bending part 11 can move to drive the sound film 1 to vibrate, so that the sound film 1 can be kept in the center of the horizontal direction, and the amplitude direction of the voice coil 2 is also kept in the center, which avoids the collision with the first magnetic conducting member 8 and the second magnetic conducting member 4, solves the problem of abnormal sound and damage caused by the contact collision of the suspension 40 and the elastic member 60, and also avoids the problem of insufficient sound pressure. In addition, the voice coil 2 of the present application is directly set on the sound film 1, and the sound film 1 has the function of the voice coil 2, so that the loudspeaker is further miniaturized.

[0028] It should be emphasized that the loudspeaker of the present application cancels the suspension 40 and the elastic member 60 at the same time, and directly sets the voice coil 2 on the sound film 1, which makes the loudspeaker miniaturized to the maximum extent, reduces the minimum resonance frequency, and avoids the problems of abnormal sound, damage and insufficient sound pressure. If only one of the suspension 40 and the elastic member 60 is cancelled, or the voice coil 2 is normally set, the loudspeaker cannot be miniaturized to the maximum extent. If the inclined magnetic gap 5 is not set in an inclined manner, but is set in a vertical manner for example, the magnetic fluid 6 cannot generate enough fixing force to keep the sound film 1 and the voice coil 2 in the center of the horizontal direction when the voice coil 2 vibrates up and down.

[0029] Specifically, when the sound film 1 vibrates up and down, the magnetic fluid 6 generates a counteracting force under the action of the magnetic field force and the surface tension, so that the sound film 1 and the voice coil 2 can always return to the original center position. The inclined magnetic gap 5 and the inclined bending part 11 are in an inclined manner, and the magnetic fluid 6 in the inclined magnetic gap 5 is also in an inclined manner, which makes the counteracting force more obvious, ensures that the magnetic field force and the surface tension of the magnetic fluid 6 can act on the sound film 1 and the voice coil 2 when vibrating, and the fixing effect of the sound film 1 is better. The magnetic fluid 6 can wrap the voice coil 2 and the inclined bending part 11 like foam, which plays a buffering role and avoids the collision with the first magnetic conducting member 8 and the second magnetic conducting member 4, so that the suspension 40 and the elastic member 60 can be removed to meet the miniaturization demand, and the fixing effect of the sound film 1 can be ensured to avoid the contact collision.

[0030] It is also important that the slanted magnetic gap 5 can make the magnetic fluid 6 in it more difficult to escape from the slanted magnetic gap 5, ensuring long-term use of the magnetic fluid 6. In addition, the overhang 40 and the elastic member 60 tend to vibrate nonlinearly due to the amplitude, and the sound produced by the loudspeaker will also appear nonlinear distortion. However, the support of the magnetic fluid 6 to the vibration has good linearity, the distortion of the loudspeaker is small, and the sound quality performance is more superior.

[0031] Specifically, when the magnetic fluid 6 is filled in the slanted magnetic gap 5, it will be kept in the slanted magnetic gap 5 under the action of the magnetic force of the magnetic field. The magnetic fluid 6 can not only fix the diaphragm 1, but also will not limit the vibration of the voice coil 2 and the diaphragm 1.

[0032] Optionally, the inclination angle α of the slanted magnetic gap 5 and the slanted bending part 11 is 30°-60°. In this scheme, the inclination angle α of the slanted magnetic gap 5 and the slanted bending part 11 is 30°-60°, the effect of fixing the diaphragm 1 is good, the buffering effect of the magnetic fluid 6 is good, and the magnetic fluid 6 is not easy to escape from the slanted magnetic gap 5. Optionally, the inclination angle α of the slanted magnetic gap 5 and the slanted bending part 11 is 45°. When the inclination angle α of the slanted magnetic gap 5 and the slanted bending part 11 is 45°, the balance effect between the fixing and the vibration of the voice coil 2 and the diaphragm 1 is the best.

[0033] Optionally, the magnetic fluid 6 filled in the inside and outside of the slanted bending part 11 is connected as a whole, and the entrapment effect of the slanted bending part 11 and the voice coil 2 is better.

[0034] Optionally, the magnetic fluid 6 is filled in the area with the strongest magnetic induction in the slanted magnetic gap 5. In this scheme, the magnetic fluid 6 is filled in the area with the strongest magnetic induction in the slanted magnetic gap 5, so that the magnetic fluid 6 is more likely to be kept in the slanted magnetic gap 5. The area with the strongest magnetic induction is the area with the densest magnetic lines of force in the slanted magnetic gap 5, which is generally in the middle area.

[0035] Optionally, the material of the diaphragm 1 is any one of aluminum, polyethylene terephthalate, polyimide, polyether ether ketone or magnesium. In this scheme, the material of the diaphragm 1 is any one of aluminum, polyethylene terephthalate, polyimide, polyether ether ketone or magnesium. These materials are not easy to adsorb the magnetic fluid 6, and the magnetic fluid 6 can be used for a longer time.

[0036] Optionally, the voice coil 2 is wound on the slanted bending part 11 to realize the fixation of the voice coil 2.

[0037] Optionally, the second magnetic conducting member 4 comprises a first sub-magnetic conducting member 41 and a second sub-magnetic conducting member 42, the first sub-magnetic conducting member 41 is arranged in layer contact on the magnet 3, and the second sub-magnetic conducting member 42 is connected with the first sub-magnetic conducting member 41; the second sub-magnetic conducting member 42 extends to the opposite position of the first magnetic conducting member 8, and forms the slanted magnetic gap 5 between the first magnetic conducting member 8.

[0038] Optionally, the magnet 3, the first sub-magnetic conducting member 41 and the second sub-magnetic conducting member 42 surround the first inner cavity 7, and the first inner cavity 7 is communicated with the inclined magnetic gap 5.

[0039] Optionally, the first magnetic conducting member 8 is a pot core 10, and the first sub-magnetic conducting member 41 and the second sub-magnetic conducting member 42 are T iron 20.

[0040] As another embodiment of the present application, a loudspeaker device is disclosed, which comprises the loudspeaker as described above.

[0041] The above is further detailed description of the present application in combination with specific optional embodiments, and cannot be deemed as limitation of the specific implementation of the present application. For ordinary skilled in the art to which the present application belongs, several simple deductions or replacements can be made without departing from the concept of the present application, and all of them shall be deemed as falling within the protection scope of the present application.

Claims

1. A loudspeaker, characterized by The loudspeaker comprises a diaphragm, a voice coil, a first magnetic guide, a magnet, and a second magnetic guide. The first magnetic guide, the magnet, and the second magnetic guide are sequentially stacked and contacted.

2. The loudspeaker of claim 1, wherein The second magnetic guide extends to the opposite position of the first magnetic guide to form an inclined magnetic gap with a magnetic field between the first magnetic guide and the second magnetic guide.

3. The loudspeaker of claim 1, wherein The inclined magnetic gap is inclined.

4. The loudspeaker of claim 1, wherein The inclined angle of the inclined magnetic gap and the inclined bending part is 30-60°.

5. The loudspeaker of claim 1, wherein, The magnetic fluid inside and outside the inclined bending part is filled and connected as a whole.

6. The loudspeaker of claim 1, wherein The inclined angle of the inclined magnetic gap and the inclined bending part is 45°.

7. The loudspeaker of claim 6, wherein, The magnetic fluid is filled in the area with the strongest magnetic induction in the inclined magnetic gap.

8. A speaker device, comprising: The material of the diaphragm is any one of aluminum, polyethylene terephthalate, polyimide, polyether ether ketone, or magnesium. The voice coil is wound on the inclined bending part. The second magnetic guide comprises a first sub-magnetic guide and a second sub-magnetic guide. The first sub-magnetic guide is stacked and contacted on the magnet. The second sub-magnetic guide is connected with the first sub-magnetic guide. The magnet, the first sub-magnetic guide, and the second sub-magnetic guide enclose a first inner cavity. The first inner cavity communicates with the inclined magnetic gap. The loudspeaker comprises any one of claims 1-7.

Images