CN217643721U - Loudspeaker and loudspeaker equipment - Google Patents

Abstract

The utility model discloses a loudspeaker and a loudspeaking device, wherein the loudspeaker comprises a sound film, a voice coil, a first magnetic conduction piece, a magnet and a second magnetic conduction piece; the first magnetic conduction piece, the magnet and the second magnetic conduction piece are sequentially arranged in a stacked contact mode, the second magnetic conduction piece extends to the position opposite to the first magnetic conduction piece, an inclined magnetic gap with a magnetic field is formed between the second magnetic conduction piece and the first magnetic conduction piece, the inclined magnetic gap is arranged in an inclined mode, and magnetic fluid is filled in the inclined magnetic gap; an inclined bending part which is obliquely bent is arranged on one circle of the edge of the sound film, and the voice coil is arranged on the inclined bending part; the inclined bent portion is inserted into the magnetic fluid in the inclined magnetic gap. The utility model discloses a loudspeaker has cancelled limit and elastic component of hanging simultaneously to directly set up the voice coil loudspeaker voice coil on the sound membrane, the at utmost has satisfied the miniaturized demand of loudspeaker, can not produce the problem of abnormal sound and damage simultaneously, can not appear the not enough problem of sound pressure yet.

Description

Loudspeaker and loudspeaker equipment

Technical Field

The utility model relates to a speaker technical field especially relates to a speaker and speaker equipment.

Background

The traditional loudspeaker magnetic circuit is composed of a washer, a magnet and T iron as shown in figure 1. And a voice coil is arranged between the magnetic gaps of the washer and the T iron, the voice coil is connected to the framework, and the framework is connected with the sound membrane. When an electric signal is input to the voice coil, the voice coil vibrates in the vertical direction due to a magnetic field in the magnetic gap, and the amplitude of the voice coil is transmitted to the diaphragm through the bobbin. Thus, the diaphragm vibrates the air to generate sound. The voice coil is held by the suspension and the elastic member, and the voice coil is held at the center of the figure in the horizontal direction through the gap between the washer and the T-iron and generates the amplitude in the vertical direction through the connected bobbin.

In order to meet the requirement of miniaturization of the existing loudspeaker, the sizes of the suspension edge and the elastic part are generally reduced, and the suspension edge, the sound film, the dust cover, the elastic part, the framework and the voice coil are also lightened correspondingly. However, the suspension edge and the elastic member are not small in size and small in size, and the frequency of the suspension edge, the sound film, the dust cover, the elastic member, the bobbin, and the voice coil are also light, and then the lowest resonance frequency of the speaker itself is increased, and the low-frequency reproduction frequency is reduced.

In order to lower the lowest resonance frequency of the loudspeaker, the elastic part with higher self frequency is removed. However, without the elastic member, the voice coil is difficult to maintain at the center of the gap between the washer and the T-iron, and the voice coil may collide with the washer or the T-iron, thereby causing quality problems such as abnormal sound and damage. In order to avoid the problem, the industry also increases the gap between the washer and the T iron, but the magnetic flux of the magnetic gap is weakened, so that the problem of insufficient sound pressure occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a speaker and speaker equipment reduces minimum resonance frequency when can satisfy the miniaturization to the utmost, and the sound membrane can keep at the horizontal center, is difficult to produce abnormal sound, damage and the sound pressure scheduling problem not enough.

The utility model discloses a loudspeaker, which comprises a sound film, a voice coil, a first magnetic conduction piece, a magnet and a second magnetic conduction piece; the first magnetic conduction piece, the magnet and the second magnetic conduction piece are sequentially arranged in a stacked contact mode, the second magnetic conduction piece extends to the position opposite to the first magnetic conduction piece, an inclined magnetic gap with a magnetic field is formed between the second magnetic conduction piece and the first magnetic conduction piece, the inclined magnetic gap is arranged in an inclined mode, and magnetic fluid is filled in the inclined magnetic gap; an inclined bending part which is bent in an inclined manner is arranged on the periphery of the edge of the sound film, and the voice coil is arranged on the inclined bending part; the inclined bent portion is inserted into the magnetic fluid in the inclined magnetic gap.

Optionally, the inclined angle of the inclined magnetic gap and the inclined bent portion is 30 ° to 60 °.

Optionally, the angle of inclination of the slanted magnetic gap and the slanted bend is 45 °.

Optionally, the magnetic fluid inside and outside the inclined bending part is filled and connected into a whole.

Optionally, the magnetic fluid fills the region of strongest magnetic induction in the slanted magnetic gap.

Optionally, the material of the sound membrane is any one of aluminum, polyethylene terephthalate, polyimide, polyetheretherketone or magnesium.

Optionally, the voice coil is wound around the inclined bent portion.

Optionally, the second magnetic conduction member includes a first sub magnetic conduction member and a second sub magnetic conduction member, the first sub magnetic conduction member is disposed on the magnet in a stacked contact manner, and the second sub magnetic conduction member is connected with the first sub magnetic conduction member; the second magnetic conduction sub-piece extends to the position opposite to the first magnetic conduction piece, and an inclined magnetic gap is formed between the second magnetic conduction sub-piece and the first magnetic conduction piece.

Optionally, the magnet, the first sub-magnetic-conductive member and the second sub-magnetic-conductive member enclose a first inner cavity, and the first inner cavity is communicated with the inclined magnetic gap.

The utility model also discloses a speaker equipment, include as above-mentioned speaker.

The utility model discloses a loudspeaker has cancelled limit and elastic component of hanging simultaneously to directly set up the voice coil loudspeaker voice coil on the sound membrane, the demand that the speaker is miniaturized has been satisfied to the at utmost, simultaneously, will incline the setting of slope magnetic gap slope, it has the magnetic current body to fill in the slope magnetic gap, is the slope kink that the slope was buckled and inserts the magnetic current body in the slope magnetic gap, and the voice coil loudspeaker voice coil directly sets up on the slope kink. When the sound film vibrates up and down, because the slope magnetic gap, slope kink and the blockking of magnetic current body, the magnetic current body wraps up the slope kink, the slope kink can move about in order to drive the sound film vibration for can let can keep the sound film at the center of horizontal direction, make the voice coil loudspeaker voice coil amplitude direction also keep the center, avoid colliding first magnetic conduction spare and second magnetic conduction spare, solve the contact collision that no dangling limit and elastic component brought and produce the abnormal sound and the problem of damage, the not enough problem of sound pressure can not appear yet. Additionally, the utility model discloses a voice coil loudspeaker voice coil directly sets up at the sound membrane, and the sound membrane has had the effect of voice coil loudspeaker voice coil concurrently, and the speaker is further miniaturized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic diagram of a conventional speaker;

fig. 2 is a schematic diagram of a speaker according to an embodiment of the present invention.

Wherein, 1, sound film; 11. a slant bending portion; 2. a voice coil; 3. a magnet; 4. a second magnetic conductive member; 41. a first sub-flux guide; 42. a second sub-flux guide; 5. a tilted magnetic gap; 6. a magnetic fluid; 7. a first inner chamber; 8. a first magnetically conductive member; 10. washer; 20. t iron; 30. a framework; 40. hanging edges; 50. a dust cover; 60. an elastic member.

Detailed Description

It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are intended to be representative, but that the present invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

The traditional loudspeaker magnetic circuit is composed of a washer 10, a magnet 3 and a T-shaped iron 20 as shown in figure 1. A voice coil 2 is arranged between the magnetic gap between the washer 10 and the T-shaped iron 20, the voice coil 2 is connected to the framework 30, and the framework 30 is connected with the sound membrane 1. When an electric signal is input to the voice coil 2, the voice coil 2 vibrates in the vertical direction by the magnetic field in the magnetic gap, and the amplitude of the voice coil 2 is transmitted to the diaphragm 1 through the bobbin 30. Thereby, the diaphragm 1 vibrates air to generate sound. The voice coil 2 is held at the center in the horizontal direction in the figure through the gap between the washer 10 and the T-bar 20 while generating the amplitude in the vertical direction by the voice coil 1 supported by the suspension 40 and the elastic member 60 through the connected bobbin 30.

In order to meet the demand for miniaturization of the conventional speaker, the dimensions of the suspended edge 40 and the elastic member 60 themselves are generally reduced, and the size is not so reduced, and the suspended edge 40, the diaphragm 1, the dust cover 50, the elastic member 60, the bobbin 30, and the voice coil 2 are also made lighter accordingly. However, the suspension 40 and the elastic member 60 are not so small in size and high in frequency, and the suspension 40, the diaphragm 1, the dust cover 50, the elastic member 60, the bobbin 30, and the voice coil 2 are also made light, and then the lowest resonance frequency of the speaker itself is increased and the low-frequency reproduction frequency is decreased.

In order to lower the lowest resonance frequency of the speaker, the elastic member 60 having a higher self frequency is removed. However, without the elastic member 60, the voice coil 2 is difficult to be maintained at the center of the gap between the washer 10 and the T-bar 20, and the voice coil 2 may collide with the washer 10 or the T-bar 20, thereby causing quality problems such as abnormal noise and damage. In order to avoid this problem, the industry also increases the gap between the washer 10 and the T-iron 20, but this leads to the problem of insufficient sound pressure due to the reduced magnetic flux in the magnetic gap.

In order to satisfy the miniaturized demand of speaker and solve above-mentioned other problems, the utility model provides a speaker. The invention will be described in detail below with reference to the drawings and alternative embodiments.

As shown in fig. 2, as an embodiment of the present invention, a speaker is disclosed, which includes a voice diaphragm 1, a voice coil 2, a first magnetic conductive member 8, a magnet 3, and a second magnetic conductive member 4; the first magnetic conduction member 8, the magnet 3 and the second magnetic conduction member 4 are sequentially arranged in a laminated contact manner, the second magnetic conduction member 4 extends to the position opposite to the first magnetic conduction member 8, an inclined magnetic gap 5 with a magnetic field is formed between the second magnetic conduction member 4 and the first magnetic conduction member 8, the inclined magnetic gap 5 is arranged in an inclined manner, and a magnetic fluid 6 is filled in the inclined magnetic gap 5; an inclined bending part 11 which is bent in an inclined manner is arranged on the periphery of the edge of the sound film 1, and the voice coil 2 is arranged on the inclined bending part 11; the inclined bent portion 11 is inserted into the magnetic fluid 6 in the inclined magnetic gap 5.

The utility model discloses a loudspeaker has cancelled limit 40 and elastic component 60 of hanging simultaneously to directly set up voice coil loudspeaker voice coil 2 on sound membrane 1, the demand that the speaker is miniaturized has been satisfied to the at utmost, simultaneously, with the slope setting of slope magnetic gap 5, it has magnetic current body 6 to fill in the slope magnetic gap 5, is the slope kink 11 of slope buckling and inserts in the magnetic current body 6 in the slope magnetic gap 5, and voice coil loudspeaker voice coil 2 directly sets up on slope kink 11. When the sound membrane 1 vibrates from top to bottom, because slope magnetic gap 5, the blockking of slope kink 11 and magnetic current body 6, the magnetic current body 6 wraps up and holds the slope kink 11, the slope kink 11 can move about in order to drive the vibration of sound membrane 1, make and to let and to keep the center at the horizontal direction by sound membrane 1, make 2 amplitude directions of voice coil loudspeaker voice coil also keep the center, avoid colliding first magnetic conduction spare 8 and second magnetic conduction spare 4, solve the problem that the contact collision that does not have dangling limit 40 and elastic component 60 and come produces abnormal sound and damage, the insufficient problem of sound pressure can not appear yet. In addition, the utility model discloses a voice coil loudspeaker voice coil 2 directly sets up at sound membrane 1, and sound membrane 1 has had the effect of voice coil loudspeaker voice coil 2 concurrently, and the speaker is further miniaturized.

It should be emphasized that the loudspeaker of the present invention eliminates the hanging edge 40 and the elastic member 60 at the same time, and directly arranges the voice coil 2 on the voice diaphragm 1, so that the loudspeaker is miniaturized to the maximum extent, and the minimum resonance frequency is reduced at the same time, and the problems of abnormal sound, damage and insufficient sound pressure are not generated. If only one of the hanging edge 40 and the elastic member 60 is eliminated or the voice coil 2 is normally disposed, the speaker cannot be miniaturized extremely. If the inclined magnetic gap 5 is not arranged obliquely but vertically, for example, the magnetic fluid 6 cannot generate a fixing force enough to keep the voice coil 2 and the diaphragm 1 at the horizontal center when the voice coil 2 vibrates vertically.

Specifically, when the diaphragm 1 vibrates up and down, the magnetic fluid 6 generates a thrust reaction force under the action of the force of the magnetic field and the surface tension, so that the diaphragm 1 and the voice coil 2 can be always kept to be restored to the original center position. The inclined magnetic gap 5 and the inclined bending part 11 are inclined, the magnetic fluid 6 in the inclined magnetic gap 5 is also inclined, the reaction force can be more obvious, 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 vibration is guaranteed, 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 to play a role in buffering, and avoids colliding with the first magnetic conduction part 8 and the second magnetic conduction part 4, so that the suspended edge 40 and the elastic part 60 can be removed to meet the miniaturization requirement, the fixing effect of the sound film 1 can be guaranteed, and contact collision is avoided.

The same important thing is that the inclined magnetic gap 5 can make the magnetic fluid 6 in the inclined magnetic gap less easily break away from the inclined magnetic gap 5, so as to ensure the long-term use of the magnetic fluid 6. In addition, the suspension edge 40 and the elastic member 60 tend to vibrate nonlinearly due to the amplitude, and nonlinear distortion also occurs in the sound generated from the speaker. However, the magnetic fluid 6 has good linearity for supporting vibration, the loudspeaker has small distortion, and the tone quality performance is more excellent.

Specifically, when the magnetic fluid 6 is filled in the inclined magnetic gap 5 and is kept in the inclined magnetic gap 5 by the magnetic force of the magnetic field, the magnetic fluid 6 can fix the sound diaphragm 1 without restricting the vibration of the voice coil 2 and the sound diaphragm 1.

Alternatively, the inclined magnetic gap 5 and the inclined bent portion 11 have an inclination angle of 30 ° to 60 °. In this scheme, the inclination angle of slope magnetic gap 5 and slope kink 11 is 30 ~ 60, and fixed sound membrane 1 is effectual, and the buffering effect of magnetic current body 6 is good, and magnetic current body 6 is difficult to break away from slope magnetic gap 5. Alternatively, the angle of inclination of the inclined magnetic gap 5 and the inclined bend 11 is 45 °. When the angle of inclination of the inclined magnetic gap 5 and the inclined bent portion 11 is 45 °, the balance between the fixing and vibration of the voice coil 2 and the voice diaphragm 1 is best.

Alternatively, the magnetic fluid 6 inside and outside the inclined bent portion 11 is filled and connected into a whole, so that the wrapping effect on the inclined bent portion 11 and the voice coil 2 is better.

Optionally, the magnetic fluid 6 fills the region of strongest magnetic induction in the tilted magnetic gap 5. In the scheme, the magnetic fluid 6 is filled in the area with the strongest magnetic induction in the inclined magnetic gap 5, so that the magnetic fluid 6 is easier to keep in the inclined magnetic gap 5. The region where the magnetic induction is the strongest is the region where the lines of magnetic induction of the inclined magnetic gap 5 are the densest, generally in the middle region.

Alternatively, the material of the sound diaphragm 1 is any one of aluminum, polyethylene terephthalate, polyimide, polyetheretherketone, or magnesium. In this embodiment, the material of the sound diaphragm 1 is any one of aluminum, polyethylene terephthalate, polyimide, polyetheretherketone, and magnesium, and these materials do not easily adsorb the magnetic fluid 6, so that the magnetic fluid 6 can be used for a longer time.

Alternatively, the voice coil 2 is wound around the inclined bent portion 11, and the fixation of the voice coil 2 is achieved.

Optionally, the second magnetic conduction member 4 includes a first sub magnetic conduction member 41 and a second sub magnetic conduction member 42, the first sub magnetic conduction member 41 is disposed on the magnet 3 in a stacked contact manner, and the second sub magnetic conduction member 42 is connected to the first sub magnetic conduction member 41; the second sub-magnetic-conductive member 42 extends to the position opposite to the first magnetic-conductive member 8, and forms an inclined magnetic gap 5 with the first magnetic-conductive member 8.

Optionally, the magnet 3, the first sub-magnetic conductive member 41 and the second sub-magnetic conductive member 42 enclose a first inner cavity 7, and the first inner cavity 7 is communicated with the inclined magnetic gap 5.

Alternatively, the first magnetic conductive member 8 is washer, and the first sub magnetic conductive member 41 and the second sub magnetic conductive member 42 are T iron.

As another embodiment of the present invention, a speaker apparatus is disclosed, including the speaker as described above.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific alternative embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. A loudspeaker is characterized by comprising a sound film, a voice coil, a first magnetic conduction piece, a magnet and a second magnetic conduction piece; the first magnetic conduction piece, the magnet and the second magnetic conduction piece are sequentially arranged in a stacked contact manner, the second magnetic conduction piece extends to the position opposite to the first magnetic conduction piece, an inclined magnetic gap with a magnetic field is formed between the second magnetic conduction piece and the first magnetic conduction piece, the inclined magnetic gap is arranged in an inclined manner, and a magnetic fluid is filled in the inclined magnetic gap; an inclined bending part which is bent in an inclined manner is arranged on one circle of the edge of the sound film, and the voice coil is arranged on the inclined bending part; the inclined bent portion is inserted into the magnetic fluid in the inclined magnetic gap.

2. The loudspeaker of claim 1, wherein the inclined magnetic gap and the inclined bend portion have an inclination angle of 30 ° to 60 °.

3. The loudspeaker of claim 2, wherein the angle of inclination of the slanted magnetic gap and the slanted bend is 45 °.

4. The speaker of claim 1, wherein the magnetic fluid inside and outside the inclined bent portion is integrally filled and connected.

5. The loudspeaker of claim 1 wherein the magnetic fluid fills the most magnetically induced region of the sloped magnetic gap.

6. A loudspeaker according to claim 1, wherein the material of the acoustic membrane is any one of aluminium, polyethylene terephthalate, polyimide, polyetheretherketone or magnesium.

7. The speaker of claim 1, wherein said voice coil is wound around said inclined bent portion.

8. The loudspeaker of claim 1, wherein said second magnetically permeable member comprises a first sub-magnetically permeable member and a second sub-magnetically permeable member, said first sub-magnetically permeable member being disposed in stacked contact with said magnet, said second sub-magnetically permeable member being coupled to said first sub-magnetically permeable member; the second sub-magnetic conduction piece extends to the position opposite to the first magnetic conduction piece, and an inclined magnetic gap is formed between the second sub-magnetic conduction piece and the first magnetic conduction piece.

9. The loudspeaker of claim 8 wherein said magnet, said first sub-flux guide and said second sub-flux guide enclose a first interior chamber, said first interior chamber communicating with said angled magnetic gap.

10. Loudspeaker device, characterized in that it comprises a loudspeaker according to any of claims 1 to 9.

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