CN107396263B

CN107396263B - Loudspeaker

Info

Publication number: CN107396263B
Application number: CN201710716379.XA
Authority: CN
Inventors: 曹成铭; 令狐荣林
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-08-21
Filing date: 2017-08-21
Publication date: 2020-02-18
Anticipated expiration: 2037-08-21
Also published as: CN107396263A

Abstract

The invention discloses a loudspeaker, which comprises a frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixedly connected to the frame, the frame comprises an upper surface and a lower surface which are oppositely arranged, an inner surface which is fixedly connected with the magnetic circuit system and is used for connecting the upper surface and the lower surface, and an outer surface which is connected with the upper surface and the lower surface and is oppositely arranged with the inner surface, the frame is provided with a step surface which is sunken from the upper surface to the lower surface and is connected with the inner surface, an inclined surface which is sunken from the outer surface to the inner surface and is connected with the lower surface, and a through hole which penetrates through the step surface and the inclined surface, and the loudspeaker also comprises a first damping net which is arranged on the step surface and covers the through hole and a second damping net which is arranged on the inclined. The loudspeaker provided by the invention can reduce warping damping, and has a large sound resistance adjusting range and a good dustproof effect.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of acoustoelectrics, in particular to a loudspeaker.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among many mobile devices, the mobile terminal device which is the most common and portable mobile phone is unconscious. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker for playing sound is widely applied to the current smart mobile devices.

In the related art, the loudspeaker comprises a frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are contained in the frame, the magnetic circuit system comprises a magnetic bowl, the vibration system comprises a vibrating diaphragm, and the frame, the magnetic bowl and the vibrating diaphragm jointly enclose a loudspeaker inner cavity. When the loudspeaker vibrates to produce sound, the air pressure formed in the inner cavity of the loudspeaker is not smooth, and the acoustic performance of the loudspeaker box is influenced. In order to solve the technical problem, the related technology adopts that an air guide channel for communicating the inner cavity of the loudspeaker with the outside is arranged on the basin frame and is used for balancing the air pressure generated by the inner cavity of the loudspeaker; however, the air guide channel is arranged, so that substances such as dust and the like can easily enter the inner cavity of the loudspeaker.

In the related art, in order to prevent substances such as dust from entering the inner cavity, a dust-proof net is attached to one side of the air guide channel, and in practical application, the dust-proof net attached to one side is prone to warping and damping, small in acoustic resistance adjusting range and poor in dust-proof effect and is prone to falling off.

Therefore, it is necessary to provide a new structure to solve the above technical problems.

[ summary of the invention ]

The invention aims to overcome the technical problems and provide the loudspeaker which can reduce warping damping, has a large sound resistance adjusting range and has a good dustproof effect.

The technical scheme of the invention is as follows:

a loudspeaker comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixedly connected with the basin frame, the vibration system comprises a sound film and a voice coil which drives the sound film to vibrate and produce sound, the basin stand comprises an upper surface fixedly connected with the sound film, a lower surface arranged opposite to the upper surface, an inner surface fixedly connected with the magnetic circuit system and connecting the upper surface and the lower surface, and an outer surface arranged opposite to the inner surface and connecting the upper surface and the lower surface, the basin stand is provided with a step surface which is sunken from the upper surface to the lower surface and is connected with the inner surface, an inclined surface which is sunken from the outer surface to the inner surface and is connected with the lower surface, and a through hole which penetrates through the step surface and the inclined surface, the loudspeaker further comprises a first damping net arranged on the step surface and covering the through hole and a second damping net arranged on the inclined surface and covering the through hole.

Preferably, the area of the second damping mesh is larger than the area of the first damping mesh.

Preferably, the first damping net and the second damping net are combined with the basin frame in an injection molding mode.

Preferably, the through-hole extends in a vibration direction of the sound diaphragm.

Preferably, the basin frame includes first basin frame lateral wall, second basin frame lateral wall, third basin frame lateral wall and the fourth basin frame lateral wall that end to end, first basin frame lateral wall with third basin frame lateral wall sets up relatively, second basin frame lateral wall with fourth basin frame lateral wall sets up relatively, the through hole be equipped with two sets ofly and set up respectively in first basin frame lateral wall with third basin frame lateral wall.

Preferably, the distance between the sound film and the step surface is greater than the displacement of the sound film vibrating in the direction of the step surface.

Preferably, the magnetic circuit system comprises a magnetic bowl and magnetic steel arranged in the magnetic bowl, the magnetic bowl comprises a bottom wall and a magnetic bowl side wall which is bent and extended from the bottom wall to the voice diaphragm direction, and the magnetic bowl side wall is fixedly connected to the inner surface.

Preferably, a gap is formed between every two adjacent magnetic bowl side walls, an extending portion extending into the gap is arranged on the bottom wall, a protrusion extending into the gap is further arranged on the basin frame, and the extending portion abuts against the protrusion in the vibration direction of the sound film.

Compared with the related art, the loudspeaker provided by the invention has the beneficial effects that: the basin frame be equipped with certainly the upper surface to the sunken with of lower surface direction the step face of internal surface connection, certainly the outward appearance to the sunken with of internal surface direction the inclined plane of lower surface connection and run through the step face with the through hole on inclined plane, the speaker still including set up in step face and cover the first damping net of through hole with set up in the inclined plane covers the second damping net of through hole. Through setting up first damping net and second damping net cover respectively the through hole, reducible damping's of perk phenomenon, acoustic resistance control range is big, and is dustproof effectual.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a speaker according to the present invention;

fig. 2 is an exploded view of a speaker according to the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic structural diagram of a frame of a speaker provided in the present invention;

fig. 5 is a schematic structural diagram of another view angle of the frame of the speaker provided by the present invention;

fig. 6 is a schematic view of an assembly structure of a frame and a magnetic bowl of the loudspeaker provided by the invention.

[ detailed description ] embodiments

The invention will be further explained with reference to the drawings and the embodiments.

As shown in fig. 1 to 6, a speaker 100 according to the present invention includes a frame 11, a vibration system 12 and a magnetic circuit system 13 fixed to the frame 11, and a front cover 14 covering the frame 11.

The vibration system 12 includes a diaphragm 121 and a voice coil 122 for driving the diaphragm 121 to vibrate and generate sound.

The frame 11 includes an upper surface 111 fixed to the sound diaphragm 121, a lower surface 112 disposed opposite to the upper surface 111, an inner surface 113 fixed to the magnetic circuit 13 and connecting the upper surface 111 and the lower surface 112, and an outer surface 114 disposed opposite to the inner surface 113 and connecting the upper surface 111 and the lower surface 112.

The frame 11 is provided with a step surface 115 which is recessed from the upper surface 111 toward the lower surface 112 and connected to the inner surface 113, an inclined surface 116 which is recessed from the outer surface 114 toward the inner surface 113 and connected to the lower surface 112, and a through hole 110 which penetrates through the step surface 115 and the inclined surface 116, wherein the through hole 110 communicates with the inner space and the outer space of the speaker 100. Preferably, the through-hole 110 extends in the vibration direction of the sound diaphragm 121, so that the air flow leakage is more communicated. In addition, the distance between the sound film 121 and the step surface 115 is larger than the displacement of the sound film 121 vibrating towards the step surface 115, so that the vibration of the sound film 121 is not influenced.

The speaker 100 further includes a first damping mesh 15 disposed on the step surface 115 and covering the through-hole 110, and a second damping mesh 16 disposed on the inclined surface 116 and covering the through-hole 110. Preferably, the area of the second damping net 16 is larger than that of the first damping net 15, and the second damping net 16 is in contact with the external space, so that the combination area of the second damping net 16 and the basin frame 11 can be increased by arranging the second damping net 16 with a larger area, and the combination reliability of the second damping net 16 and the basin frame 11 can be increased. Preferably, the first damping net 15 and the second damping net 16 are combined with the basin frame 11 through injection molding, so that the combination reliability of the first damping net 15 and the second damping net 16 with the basin frame 11 is further enhanced.

In this embodiment, basin frame 11 includes first basin frame lateral wall 11a, second basin frame lateral wall 11b, third basin frame lateral wall 11c and fourth basin frame lateral wall 11d that the head meets, first basin frame lateral wall 11a with third basin frame lateral wall 11c sets up relatively, second basin frame lateral wall 11b with fourth basin frame lateral wall 11d sets up relatively, through-hole 110 be equipped with two sets ofly and set up respectively in first basin frame lateral wall 11a with third basin frame lateral wall 11 c.

The magnetic circuit system 13 includes a magnetic bowl 131, a magnetic steel 132 disposed in the magnetic bowl 131, and a pole piece 133 attached to the surface of the magnetic steel 132, where the magnetic bowl 131 includes a bottom wall 1311 and a magnetic bowl sidewall 1312 extending from the bottom wall 1311 to the sound diaphragm 121, and the magnetic bowl sidewall 1312 is fixedly connected to the inner surface 113. A gap 1313 is arranged between two adjacent magnetic bowl side walls 1312, the bottom wall 1311 is provided with an extension 1314 extending into the gap 1313, the frame 11 is further provided with a protrusion 117 extending into the gap 1313, and the extension 1314 abuts against the protrusion 117 in the vibration direction of the sound diaphragm 121.

The basin frame 11 is equipped with certainly the upper surface 111 to the sunken with of lower surface 112 direction the step face 115 that inner surface 113 connects, certainly the outer surface 114 to the sunken with of inner surface 113 direction the inclined plane 116 that lower surface 112 connects and run through the step face 115 with the through-hole 110 of inclined plane 116, speaker 100 still including set up in step face 115 and cover the first damping net 15 of through-hole 110 with set up in inclined plane 116 and cover the second damping net 16 of through-hole 110. Through setting up first damping net 15 and second damping net 16 cover respectively through hole 110, reducible damping's phenomenon of perk, the acoustic resistance control range is big, and is dustproof effectual.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a loudspeaker, including basin frame, rigid coupling in the vibration system and the magnetic circuit of basin frame, vibration system includes sound membrane and drive the voice coil loudspeaker voice coil of sound membrane vibration sound production, the basin frame include with the upper surface of sound membrane rigid coupling, with the relative lower surface that sets up of upper surface, connection the upper surface with the lower surface with the internal surface and the connection of magnetic circuit rigid coupling the upper surface with the lower surface with the relative surface that sets up of internal surface, its characterized in that, the basin frame be equipped with certainly the upper surface to the lower surface direction sunken with the step face of internal surface connection certainly the external surface to the sunken with the inclined plane of lower surface connection and run through the step face with the through hole of inclined plane, loudspeaker still including set up in step face and cover the first damping net of through hole with set up in the inclined plane and cover the second of through hole hinders and hinders the inclined plane A nylon net.

2. The loudspeaker of claim 1 wherein the area of the second damping mesh is greater than the area of the first damping mesh.

3. The loudspeaker of claim 1, wherein the first and second damping nets are each injection molded with the frame.

4. The speaker according to claim 1, wherein the through-hole extends in a vibration direction of the diaphragm.

5. The loudspeaker according to claim 1, wherein the frame comprises a first frame side wall, a second frame side wall, a third frame side wall and a fourth frame side wall which are connected end to end, the first frame side wall and the third frame side wall are arranged oppositely, the second frame side wall and the fourth frame side wall are arranged oppositely, and two groups of through holes are arranged and are respectively arranged on the first frame side wall and the third frame side wall.

6. The speaker of claim 1, wherein a distance from the diaphragm to the step surface is larger than a displacement of the diaphragm to vibrate in a direction of the step surface.

7. The loudspeaker of claim 1, wherein the magnetic circuit system comprises a magnetic bowl and magnetic steel arranged in the magnetic bowl, the magnetic bowl comprises a bottom wall and a magnetic bowl side wall bending and extending from the bottom wall to the sound film direction, and the magnetic bowl side wall is fixedly connected to the inner surface.

8. The loudspeaker according to claim 7, wherein a gap is formed between two adjacent magnetic bowl side walls, the bottom wall is provided with an extension portion extending into the gap, the frame is further provided with a protrusion extending into the gap, and the extension portion abuts against the protrusion in the vibration direction of the sound film.