CN213073069U

CN213073069U - Loudspeaker

Info

Publication number: CN213073069U
Application number: CN202021310397.1U
Authority: CN
Inventors: 冯国袖; 吴树文
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-27
Anticipated expiration: 2030-07-06
Also published as: WO2022006930A1

Abstract

The utility model provides a loudspeaker, including the basin frame, be fixed in the vibration system and the magnetic circuit of basin frame, vibration system includes the vibrating diaphragm, the flexible line way board of voice coil loudspeaker voice coil and electric connection voice coil loudspeaker voice coil and outside signal of telecommunication of vibrating diaphragm sound production in the drive, the flexible line way board is including the first fixed arm that has first pad, it is equipped with a book ring to go up the vibrating diaphragm, roll over the ring and include the fixed part fixed with the basin frame, it includes first supporting part and the second supporting part that extends and the mutual interval sets up from the fixed part towards the surface of basin frame to the flexible line way board to go up the vibrating diaphragm, the basin frame includes the medial surface of orientation voice coil loudspeaker voice coil and the relative lateral surface that sets up with the medial surface, first supporting part laminating medial surface sets up, second supporting part laminating lateral surface sets up, first pad overlaps with. The utility model discloses a vibrating diaphragm and basin frame contact department's structure in the improvement is favorable to the silica gel of first, second supporting part to mould plastics, avoids the silica gel scald and the problem of opening a circuit.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric conversion field, concretely relates to speaker.

[ background of the invention ]

With the development of science and technology, more and more electronic devices are built in with sounding devices. Generally, the speaker can provide even strong magnetic field through the magnet steel, makes the voice coil loudspeaker voice coil that leads to there is alternating current vibrate in even strong magnetic field, and voice coil loudspeaker voice coil drive skeleton, and then drives the vibrating diaphragm vibration and makes the speaker produce sound.

In the prior art, the loudspeaker comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixed on the basin frame, the vibration system comprises a vibrating diaphragm fixed on the basin frame, a driving voice coil for sounding the vibrating diaphragm and a flexible circuit board electrically connected with an external electric signal. The flexible line way board is equipped with the monomer pad of being connected with outside signal of telecommunication, the vibrating diaphragm is including rolling over the ring, it is equipped with the fixed part that outside periphery extends to roll over the ring, the fixed part corresponds monomer pad and is equipped with the supporting part, the supporting part near basin frame medial surface sets up. The silicone rubber of moulding plastics is all below the monomer pad, and when the FPC and the monomer FPC welding of BOX are in the same place, monomer pad below does not support, appears the rosin joint problem easily, leads to the finished product to open a circuit, and the silicone rubber of monomer pad below is scalded also easily moreover.

Therefore, there is a need for a new speaker.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker to solve above-mentioned problem.

The technical scheme of the utility model 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 fixed on the basin frame, the vibration system comprises an upper vibrating diaphragm fixed on the basin frame, a voice coil for driving the upper vibrating diaphragm to generate sound and a flexible circuit board electrically connected with the voice coil and an external electric signal, the flexible circuit board comprises a first fixed arm fixed on one end of the basin frame and far away from one side of the upper vibrating diaphragm, a first pad is arranged on one side of the voice coil, the upper vibrating diaphragm comprises a ball top positioned in the middle and a folding ring surrounding the ball top, the folding ring comprises a fixed part fixed on the basin frame, the upper vibrating diaphragm comprises a first supporting part and a second supporting part which are arranged from the fixed part towards the surface of the basin frame to the flexible circuit board in an extending way and are arranged at intervals, the basin frame comprises an inner side face towards the voice coil and an outer side face, the first supporting part is attached to the inner side face, the second supporting part is attached to the outer side face, and the projection of the first pad in the vibration direction is at least partially overlapped with the projection of the basin frame in the vibration direction.

Preferably, the first supporting part and the second supporting part form a supporting structure, the basin stand is rectangular and annular, the basin stand comprises two long axis sides which are arranged oppositely and two short axis sides which are connected with the two long axis sides, an arc part is formed at the joint of the long axis sides and the short axis sides, and the arc part is installed in the supporting structure.

Preferably, the fixing portion includes a first fixing portion extending horizontally outward from the edge and a second fixing portion extending from the first fixing portion toward the flexible printed circuit board.

Preferably, the first supporting portion is extended from the first fixing portion, and the second supporting portion is extended from the second fixing portion.

Preferably, the flexible line way board still include with the second fixed arm that first fixed arm interval set up with be connected first fixed arm with the elastic arm of second fixed arm, the elastic arm includes that the structure is the same and each other is mirror symmetry's a pair of, the elastic arm is including connecting first U type arm and the second U type arm of first fixed arm and second fixed arm.

Preferably, the number of the first pads is two, and the two first pads are respectively located at two opposite ends of the long axis of the first fixing arm.

Preferably, the second fixing arm includes a main body portion and a second pad extending from two lengthwise ends of the main body portion toward the frame in a bending manner.

Preferably, the voice coil is rectangular and annular, the voice coil comprises two long shaft sides which are arranged oppositely and two short shaft sides which are connected with the two long shaft sides, the number of the flexible circuit boards is two, and the two flexible circuit boards are respectively and correspondingly arranged on the two short shaft sides.

Preferably, the magnetic circuit system comprises an auxiliary magnetic steel component fixedly connected with the basin frame and provided with a second opening in the middle, main magnetic steel positioned in the second opening and a pole core attached to the upper surface of the main magnetic steel, a magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel component, and at least part of the voice coil is arranged in the magnetic gap.

Preferably, the vibration system further includes a framework fixed to the flexible circuit board and supporting the upper diaphragm, and a lower diaphragm located below the flexible circuit board.

The beneficial effects of the utility model reside in that: the utility model provides a loudspeaker, including the basin frame, be fixed in the vibration system and the magnetic circuit of basin frame, vibration system is including being fixed in last vibrating diaphragm, the drive of basin frame go up the voice coil loudspeaker voice coil and the electricity of vibrating diaphragm sound production and connect the flexible line way board of voice coil loudspeaker voice coil and outside signal of telecommunication, the flexible line way board is including being fixed in the basin frame is kept away from the first fixed arm of last vibrating diaphragm one end, first fixed arm is kept away from voice coil loudspeaker voice coil one side is equipped with first pad, go up the vibrating diaphragm including the ball top that is located the intermediate position and encircle the book ring of ball top, roll over the ring include with the fixed part that the basin frame is fixed, go up the vibrating diaphragm include from the fixed part orientation the surface of basin frame to the first supporting part and the second supporting part that flexible line way board extended and mutual interval set up, the basin frame including towards the medial surface of voice, the first supporting part is attached to the inner side face, the second supporting part is attached to the outer side face, and the projection of the first pad in the vibration direction is at least partially overlapped with the projection of the basin frame in the vibration direction. The utility model discloses an improve the structure of vibrating diaphragm and basin frame contact department, can let the circular arc portion of basin frame prop up first pad to the silica gel that is favorable to first, second supporting part is moulded plastics, avoids silica gel scald and open circuit problem.

[ description of the drawings ]

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

fig. 2 is a schematic structural view of the upper diaphragm and the skeleton of fig. 1, which are combined and separated into a whole;

fig. 3 is an exploded view of the speaker of the present invention;

fig. 4 is a schematic structural diagram of the flexible printed circuit of the present invention;

fig. 5 is a schematic structural view of the middle-upper vibrating diaphragm and the framework of the present invention after being combined;

fig. 6 is a schematic perspective cross-sectional view taken along line a-a of fig. 1.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 to 6, the present invention provides a speaker 100, which includes a frame 20, a vibration system 30 fixed to the frame 20, and a magnetic circuit system 40. The magnetic circuit system 40 is used for driving the vibration system 30 to vibrate and generate sound.

The basin stand 20 is integrally in a hollow rectangle shape, the basin stand 20 comprises two long shaft sides which are arranged oppositely and two short shaft sides which are connected with the two long shaft sides, and a circular arc part 21 is formed at the joint of the long shaft sides and the short shaft sides.

Vibration system 30 is including being fixed in last vibrating diaphragm 31 of basin frame 20, being located go up the drive of vibrating diaphragm 31 below go up the voice coil 32, the electricity of vibrating diaphragm 31 sound production and connect the flexible line way board 33 of voice coil 32 and outside signal of telecommunication, be fixed in on the flexible line way board 33 and support the skeleton 34 of vibrating diaphragm 31 and locate the flexible line way board 33 below and the lower vibrating diaphragm 35 of being connected with flexible line way board 33.

The flexible circuit board 33 includes two short shafts respectively located on two opposite sides of the basin frame 20, and includes a first fixing arm 331 fixed on one end of the basin frame 20 far away from the upper diaphragm 31, a second fixing arm 332 spaced apart from the first fixing arm 331, and an elastic arm 333 connected to the first fixing arm 331 and the second fixing arm 332.

In an alternative embodiment, the first fixing arm 331 is provided with a first pad 3311 connected to an external electrical signal, the first pad 3311 is located at an end of the first fixing arm 331 away from the voice coil 32, and a projection of the first pad 3311 in the vibration direction at least partially overlaps a projection of the tub 20 in the vibration direction. Optionally, the first pads 3311 include two first pads 3311, and the two first pads 3311 are respectively located at two opposite ends of the long axis of the first fixing arm 331.

In an alternative embodiment, the second fixing arm 332 includes a main body portion 3321, a bending portion 3322 extending from two longitudinal ends of the main body portion 3321 and bending toward the frame 34, and a second pad 3323 disposed at an end of the bending portion 3322 and connected to the frame 34.

The elastic arm 333 includes a pair of arms having the same structure and being mirror-symmetrical to each other, and the elastic arm 333 includes a first U-shaped arm 3331 and a second U-shaped arm 3332 connecting the first fixing arm 331 and the second fixing arm 332. In this embodiment, the flexible printed circuit 33 has a symmetrical structure, and the middle line thereof is a symmetrical line.

The upper diaphragm 31 includes a dome 311 at a middle position and a corrugated rim 312 surrounding the dome 311. The edge 312 include with the fixed part 3121 that the basin frame 20 is fixed, go up vibrating diaphragm 31 and still include certainly fixed part 3121 orientation the surface of basin frame 20 to the flexible line way board 33 extends and the first supporting part 313 and the second supporting part 314 that the mutual interval set up, basin frame 20 includes the orientation the medial surface of voice coil 32 and with the lateral surface that the medial surface set up relatively, the laminating of first supporting part 313 the medial surface sets up, the laminating of second supporting part 314 the lateral surface sets up. The projection of the first pad 3311 in the vibration direction at least partially overlaps the projection of the frame 20 in the vibration direction.

Specifically, the first support part 313 and the second support part 314 constitute a support structure, and the circular arc part 21 of the basin stand 20 is installed in the support structure, that is, clamped between the first support part 313 and the second support part 314. The utility model discloses an improve the structure of vibrating diaphragm 31 and basin frame 20 contact department, can let the circular arc portion 21 of basin frame 20 support first pad 3311 to be favorable to the silica gel of first, second supporting

part

313, 314 to mould plastics, avoid silica gel scald and open circuit problem.

Specifically, the fixing portion 3121 includes a first fixing portion 31211 extending horizontally outward from the edge 312 and a second fixing portion 31212 extending from the first fixing portion 31211 toward the flexible circuit board 33 to further increase a contact area with the tub frame 20. The first supporting portion 313 is extended from the first fixing portion 31211, and the second supporting portion 314 is extended from the second fixing portion 31212.

The voice coil 32 is rectangular and annular, and the voice coil 32 includes two long axis sides disposed opposite to each other and two short axis sides connecting the two long axis sides.

The frame 34 includes a support base 342 having a first opening 341, and a side wall 343 extending from an end of the support base 342 toward the flexible printed circuit 33, and the side wall 343 includes two parts disposed corresponding to the flexible printed circuit 33. The main body portion 3321 of the second fixed arm 332 is fixed to the side wall 343 of the frame 34, the bent portion 3322 of the second fixed arm 332 extends toward the support 342 of the frame 34, and the second pad 3323 is connected to the support 342 of the frame 34. Further, the dome 311 abuts against the upper periphery of the first opening 341 of the supporting platform 342, and the voice coil 32 abuts against the lower periphery of the first opening 341 of the supporting platform 342.

The two lower diaphragms 35 are respectively arranged below the two flexible circuit boards 33 and are in contact with one side of the flexible circuit board 33 away from the framework 34.

The magnetic circuit system 40 comprises an auxiliary magnetic steel component 41 fixedly connected with the basin frame 20 and provided with a second opening 411 in the middle, main magnetic steel 42 located in the second opening 411, and a pole core 43 attached to the upper surface of the main magnetic steel 42, a magnetic gap is formed between the main magnetic steel 42 and the auxiliary magnetic steel component 41, and the voice coil 32 is at least partially arranged in the magnetic gap. Optionally, the secondary magnetic steel assemblies 41 may be integrally formed to surround the primary magnetic steel 42, or the primary magnetic steel 42 may be surrounded by 4 groups of the secondary magnetic steel assemblies 41 at intervals, or the primary magnetic steel assemblies 42 may be surrounded by 2 groups of the secondary magnetic steel assemblies 41 at intervals. In the present embodiment, the sub-magnet assembly 41 includes two upper and lower sub-magnets 41.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A loudspeaker comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are fixed on the basin frame, the vibration system comprises an upper vibrating diaphragm fixed on the basin frame, a voice coil for driving the upper vibrating diaphragm to generate sound and an electric connection flexible circuit board for connecting the voice coil with an external electric signal, the flexible circuit board comprises a first fixing arm fixed on one end of the upper vibrating diaphragm, the first fixing arm is far away from one side of the voice coil and is provided with a first bonding pad, the upper vibrating diaphragm comprises a ball top positioned at a middle position and a folding ring surrounding the ball top, the folding ring comprises a fixing part fixed on the basin frame, the upper vibrating diaphragm comprises a first supporting part and a second supporting part which are arranged from the surface of the basin frame towards the flexible circuit board, the first supporting part and the second supporting part are arranged at intervals, the basin frame comprises an inner side face of the voice coil and an outer side face arranged, the first supporting part is attached to the inner side face, the second supporting part is attached to the outer side face, and the projection of the first pad in the vibration direction is at least partially overlapped with the projection of the basin frame in the vibration direction.

2. The loudspeaker of claim 1, wherein the first support portion and the second support portion form a support structure, the frame is in a rectangular ring shape, the frame comprises two long axis sides and two short axis sides, the long axis sides and the short axis sides are arranged oppositely, the joint of the long axis sides and the short axis sides forms an arc portion, and the arc portion is installed in the support structure.

3. The speaker of claim 1, wherein the fixing portion includes a first fixing portion extending horizontally outward from the edge and a second fixing portion extending from the first fixing portion toward the flexible printed circuit board.

4. The loudspeaker of claim 3, wherein the first support portion is extended from the first fixing portion, and the second support portion is extended from the second fixing portion.

5. The loudspeaker of claim 1, wherein the flexible printed circuit further comprises a second fixed arm spaced apart from the first fixed arm, and an elastic arm connecting the first fixed arm and the second fixed arm, wherein the elastic arm comprises a pair of arms having the same structure and being mirror images of each other, and the elastic arm comprises a first U-shaped arm and a second U-shaped arm connecting the first fixed arm and the second fixed arm.

6. The speaker of claim 5, wherein said first pads comprise two, said first pads being located at opposite ends of a long axis of said first fixed arm.

7. The speaker of claim 6, wherein the second fixing arm includes a main body and a second pad extending from two lengthwise ends of the main body and bent toward the frame.

8. The speaker of claim 1, wherein the voice coil is in a shape of a rectangular ring, the voice coil includes two long axis sides disposed opposite to each other and two short axis sides connecting the two long axis sides, and two flexible printed circuits are disposed on the two flexible printed circuits and respectively disposed on the two short axis sides.

9. The loudspeaker of claim 1, wherein the magnetic circuit system comprises an auxiliary magnetic steel component fixedly connected to the frame and having a second opening in the middle, a main magnetic steel located in the second opening, and a pole core attached to the upper surface of the main magnetic steel, a magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel component, and the voice coil is at least partially disposed in the magnetic gap.

10. The loudspeaker of claim 1, wherein the vibration system further comprises a frame fixed to the flexible wiring board and supporting the upper diaphragm, and a lower diaphragm located below the flexible wiring board.