speaker

Abstract

The present invention provides a speaker. [Solution] The speaker includes a frame, a vibration system and a magnetic circuit system fixed to the frame, the vibration system includes a diaphragm, a voice coil that drives the diaphragm to vibrate and produce sound, and a flexible circuit board fixedly connected to the voice coil, the flexible circuit board includes a first fixed part connected to the voice coil, a second fixed part connected to the frame, and an elastic arm that connects the first fixed part and the second fixed part, the magnetic circuit system includes a lower clamp, a main magnet steel and a sub magnet steel fixed to the lower clamp and spaced apart from each other, the lower clamp is provided with a through hole, and at least a part of the projection of the elastic arm along the vibration direction of the diaphragm is located in the through hole, and the speaker further includes a connection piece connected to the outer surface of the lower clamp and covering the through hole. The speaker of the present invention improves the performance of the product.

Description

[Technical field]

[0001] The present invention relates to the field of electroacoustic conversion, in particular to loudspeakers. [Background technology]

[0002] With the advent of the mobile Internet era, the generation of electronic products is changing more and more rapidly, and the requirements for the performance of electronic products are also increasing, one of which is high-quality music function. Therefore, the performance of electro-acoustic systems needs to be constantly improved, and high-quality speakers are one of the prerequisites for realizing this high-quality music function.

[0003] A speaker of the related art generally comprises a frame, a vibration system fixed to the frame, and a magnetic circuit system. The vibration system has a diaphragm, a voice coil that drives the diaphragm to vibrate it and produce sound, and a flexible circuit board fixedly connected to the voice coil. The flexible circuit board has a first fixed part connected to the voice coil, a second fixed part connected to the frame, and an elastic arm connecting the first fixed part and the second fixed part. The magnetic circuit system has a lower clamp fixed to the frame, and a projection of the elastic arm along the vibration direction of the diaphragm is located on the lower clamp, so that the elastic arm is likely to come into contact with the lower clamp during vibration, restricting the movement of the elastic arm and affecting the performance of the product.

[0004] Therefore, it is necessary to provide a new speaker that can solve the above technical problems. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a speaker that overcomes the above technical problems and has improved product performance. [Means for solving the problem]

[0006] In order to achieve the above object, the speaker provided by the present invention comprises a frame, a vibration system and a magnetic circuit system fixed to the frame, the vibration system having a diaphragm, a voice coil that drives the diaphragm to vibrate it to produce sound, and a flexible circuit board fixedly connected to the voice coil, the flexible circuit board having a first fixed part connected to the voice coil, a second fixed part connected to the frame, and an elastic arm that connects the first fixed part and the second fixed part, the magnetic circuit system having a lower clamp, a main magnet steel and a secondary magnet steel fixed to the lower clamp and spaced apart from each other, the secondary magnet steel circumnavigates the main magnet steel to form a magnetic gap, the voice coil is disposed in the magnetic gap, the lower clamp has a through hole, and at least a portion of the projection of the elastic arm along the vibration direction of the diaphragm is located in the through hole, and the speaker further comprises a connecting piece connected to the outer surface of the lower clamp and covering the through hole.

[0007] Preferably, the flexible circuit board is located on a side of the voice coil away from the diaphragm, and the first fixed portion is connected to a lower surface of the voice coil.

[0008] Preferably, the lower clamp has an inner surface close to the vibration system and an outer surface opposite the inner surface, the lower clamp is provided with a groove recessed from the outer surface toward the inner surface, the through hole passes through the groove, and the connecting piece is positioned in the groove.

[0009] Preferably, the connecting piece is a steel sheet, a polycarbonate sheet, or a polyester resin sheet.

[0010] Preferably, the voice coil is track-shaped, there are four flexible circuit boards, each located at a corner of the voice coil, and there are also four through holes, each of which corresponds one-to-one to the flexible circuit board.

[0011] Preferably, four connection pieces are provided, and the connection pieces correspond one-to-one to the through holes.

[0012] Preferably, two connection pieces are provided, each of which covers two of the through holes.

[0013] Preferably, one connection piece is provided, has a hollow ring structure, and has a main body portion covering the through hole and a connection arm connecting adjacent ones of the main body portions.

[0014] Preferably, the magnetic circuit system further includes a main pole core affixed to the main magnet steel and a sub-pole core affixed to the sub-magnet steel, and the sub-pole core is provided with an escape hole for accommodating the flexible circuit board. Effect of the Invention

[0015] In the speaker of the present invention, a through hole corresponding to the flexible circuit board is provided in the lower clamp, thereby increasing the vibration space of the flexible circuit board and improving the performance of the product. [Brief description of the drawings]

[0016] In order to more clearly describe the technical solutions in the embodiments of the present invention, the drawings necessary for describing the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any inventive work, among which: [Figure 1] FIG. 1 is a perspective view of a speaker according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of the speaker according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA of FIG. [Figure 4] FIG. 4 is a partial exploded view of the speaker according to the first embodiment of the present invention. [Diagram 5]FIG. 5 is a partial exploded view of a speaker according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a partial exploded view of a speaker according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those skilled in the art without making inventive efforts based on the embodiments of the present invention shall be included in the protection scope of the present invention.

[0018] Example 1 1 to 3, a speaker 100 provided in the first embodiment of the present invention includes a frame 10, a vibration system 20 and a magnetic circuit system 30 fixed to the frame 10, and the vibration system 20 includes a diaphragm 21, a voice coil 22 that drives the diaphragm 21 to vibrate it and produce sound, and a flexible circuit board 23 fixedly connected to the voice coil 22. The magnetic circuit system 30 includes a lower clamp 31, a main magnet steel 321 and a sub magnet steel 322 fixed to the lower clamp 31 and spaced apart from each other, a main magnetic pole core 331 attached to the main magnet steel 321, and a sub magnetic pole core 332 attached to the sub magnet steel 322, and the sub magnet steel 322 goes around the main magnet steel 321 to form a magnetic gap 301, and the voice coil 22 has a track shape and is disposed in the magnetic gap 301.

[0019] The flexible circuit board 23 includes a first fixing portion 231 connected to the voice coil 22, a second fixing portion 232 connected to the frame 10, and an elastic arm 233 connecting the first fixing portion 231 and the second fixing portion 232. The flexible circuit board 23 is disposed in the magnetic gap 301 and is located on the side of the voice coil 22 that is away from the diaphragm 21, and the first fixing portion 231 is connected to the lower surface of the voice coil 22, that is, the flexible circuit board 23 supports the voice coil 22 and is electrically connected to the voice coil 22. Specifically, four flexible circuit boards 23 are provided, and each is located at a corner of the voice coil 22. The sub-pole core 332 is provided with an escape hole 3320 that accommodates the flexible circuit board 23, and four escape holes 3320 are also provided corresponding to the escape hole.

[0020] The lower clamp 31 is provided with a through hole 310, and at least a portion of the projection of the elastic arm 233 of the flexible circuit board 23 along the vibration direction of the diaphragm 21 is located within the through hole 310, i.e., the through hole 310 of the lower clamp 31 can increase the vibration space of the elastic arm 233. Accordingly, four through holes 310 are provided, and the through holes 310 correspond one-to-one to the flexible circuit boards 23.

[0021] In addition, the speaker 100 further includes a connection piece 40 that covers the through hole 310, and the connection piece 40 is connected to the outer surface of the lower clamp 31. The connection piece 40 is a steel sheet, which can increase the strength of the magnetic circuit system, and in other embodiments, the connection piece can be a polycarbonate sheet or a polyester resin sheet, so that the through hole can ensure air leakage and the connection piece can prevent dust from entering. In other embodiments, the connection piece 40 can be made of other materials.

[0022] Referring also to Figure 4, the lower clamp 31 has an inner surface 311 close to the vibration system 20 and an outer surface 312 opposite the inner surface 311, and the lower clamp 31 is provided with a groove 313 recessed from the outer surface 312 toward the inner surface 311, the through hole 310 passes through the groove 313, and the connecting piece 40 is located in the groove 313, so that the installation of the connecting piece 40 does not increase the overall height of the speaker 100.

[0023] In this embodiment, four connection pieces 40 are provided, and the connection pieces 40 correspond one-to-one to the through holes 310 .

[0024] Example 2 FIG. 5 shows a speaker 200 according to a second embodiment of the present invention. The only difference between the first embodiment and the second embodiment is that the speaker 200 according to the second embodiment is provided with two connecting pieces 40', each of which covers two through holes 310'.

[0025] Example 3 FIG. 6 shows a speaker 300 according to a third embodiment of the present invention. The only difference between the first embodiment and the third embodiment is that the speaker 300 according to the third embodiment has one connecting piece 40'' having a ring-shaped structure and a main body portion 41'' covering the through-hole 310'', and a connecting arm 42'' connecting adjacent main body portions 41''.

[0026] In the speaker of the present invention, a through hole corresponding to the flexible circuit board is provided in the lower clamp, thereby increasing the vibration space of the flexible circuit board and improving the performance of the product.

[0027] The above is merely an embodiment of the present invention, and it should be noted here that those skilled in the art may make modifications without departing from the creative idea of ​​the present invention, and all such modifications are within the scope of protection of the present invention.

Claims

1. A speaker comprising: a frame; a vibration system and a magnetic circuit system fixed to the frame; the vibration system having a diaphragm, a voice coil that drives the diaphragm to vibrate and generate sound; and a flexible circuit board fixedly connected to the voice coil, the flexible circuit board having a first fixed portion connected to the voice coil, a second fixed portion connected to the frame, and an elastic arm that connects the first fixed portion and the second fixed portion; the magnetic circuit system having a lower clamp, and a main magnet steel and a sub magnet steel fixed to the lower clamp and spaced apart from each other, the sub magnet steel going around the main magnet steel to form a magnetic gap, and the voice coil being disposed in the magnetic gap; The lower clamp is provided with a through hole, a projection of the elastic arm along the vibration direction of the diaphragm is at least partially positioned in the through hole; The speaker further includes a connection piece connected to an outer surface of the lower clamp and covering the through hole, The flexible circuit boards are four in number, and are located at the corners of the voice coil, respectively. The through holes are also four in number, and the through holes correspond one-to-one to the flexible circuit boards. The connecting piece is provided in one piece and has a hollow ring structure, The connection piece has a main body portion covering the through hole and a connecting arm connecting adjacent main bodies. A speaker characterized by:

2. the flexible circuit board is located on a side of the voice coil that is away from the diaphragm, and the first fixed portion is connected to a lower surface of the voice coil.

2. The speaker according to claim 1 .

3. the lower clamp has an inner surface proximate to the vibration system and an outer surface opposite the inner surface; The lower clamp is provided with a recessed groove recessed from the outer surface to the inner surface, The through hole penetrates the groove, and the connection piece is located in the groove.

2. The speaker according to claim 1 .

4. The connecting piece is a steel sheet, a polycarbonate sheet, or a polyester resin sheet; 2. The speaker according to claim 1 .

5. The voice coil is of track type.

2. The speaker according to claim 1 .

6. The magnetic circuit system further includes a main pole core attached to the main magnet steel and a sub pole core attached to the sub magnet steel, The sub-pole core is provided with a relief hole for accommodating the flexible circuit board.

2. The speaker according to claim 1 .

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