CN108430008B

CN108430008B - Sound production device

Info

Publication number: CN108430008B
Application number: CN201810079961.4A
Authority: CN
Inventors: 金鑫; 黄振
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2018-01-27
Filing date: 2018-01-27
Publication date: 2020-09-18
Anticipated expiration: 2038-01-27
Also published as: CN108430008A

Abstract

The invention provides a sounding device which comprises a basin frame, and a magnetic circuit system and a vibration system which are fixed on the basin frame, wherein the basin frame comprises a main body part and a fixed vibrating diaphragm, and a supporting part which extends from one side of the main body part, which is far away from the vibrating diaphragm, towards the part far away from the vibrating diaphragm, the magnetic circuit system comprises a magnetic bowl which is fixedly supported at one end of the supporting part, and a magnet which is arranged between the main body part and the magnetic bowl, the magnet extends to the edge of the basin frame, a concave part is formed on one side, which is close to the supporting part, of the edge of the magnet, a concave part is formed on the supporting part, which is correspondingly concave towards the direction far away from the magnet, and an avoiding part is communicated with the concave part, the concave part and the avoiding part enclose a glue containing groove, the magnetic bowl is correspondingly provided with a. The sounding device is provided with a glue containing groove between the edge of the magnet and the supporting part, the glue containing groove is filled with glue, and impact force is released through glue buffering so as to protect the magnet and the basin stand.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of electroacoustic transduction, in particular to a sounding device.

[ background of the invention ]

A general sound production device includes magnetic circuit and vibration system, and vibration system is including the voice coil loudspeaker voice coil and the vibrating diaphragm that are connected, and the voice coil loudspeaker voice coil of circular telegram drives the vibrating diaphragm vibration under magnetic circuit's effect, sends sound.

A magnetic circuit system of a sound production device among the prior art covers to the edge of sound production device, and parts such as the lower splint of sound production device, magnet steel and basin frame use the metalwork as the owner, and the plastics total amount is few, relies on glue adhesion about 0.01mm thickness between each part, and consequently can't effectively cushion the impact force between each part, easily takes place the condition that part deformation, fracture, glue peel off etc. arouse the product inefficacy because of the impact force effect in the process of falling.

[ summary of the invention ]

In order to solve the above problems, the present invention provides a sound generating device, which includes a frame, and a magnetic circuit system and a vibration system fixed on the frame, wherein the vibration system includes a vibrating diaphragm fixed at one end of the frame, the frame includes a main body portion for fixing the vibrating diaphragm, and a support portion extending from one side of the main body portion away from the vibrating diaphragm toward a portion away from the vibrating diaphragm, the magnetic circuit system includes a magnetic bowl fixedly supported at one end of the support portion and a magnet disposed between the main body portion and the magnetic bowl, the magnet extends to an edge of the frame, a recess portion is formed in a recess of one side of the edge of the magnet close to the support portion, the support portion is correspondingly recessed toward a direction away from the magnet to form an avoiding portion communicated with the recess portion, the recess portion and the avoiding portion enclose a glue containing groove, the magnetic bowl is correspondingly provided with a glue injection port communicated with the glue containing groove, the glue containing groove extends to the main body part from the surface of one side, far away from the main body part, of the magnet, and damping glue is filled in the glue containing groove.

As an improvement, the supporting parts comprise at least two supporting parts and are symmetrically distributed on the periphery of the magnet.

As an improvement, the magnet comprises a main magnetic steel fixed in the middle of the magnetic bowl and an edge magnetic steel arranged at an interval with the main magnetic steel and arranged on the periphery of the magnetic bowl, the edge magnetic steel is fixed between two adjacent supporting parts, and the recess is formed at one end of the edge magnetic steel close to the supporting parts.

As an improvement, the main part is square, the supporting part corresponds the setting and is in the bight of main part, the magnetism bowl is the slice to be fixed the supporting part, the injecting glue mouth certainly the inside sunken formation in edge of magnetism bowl.

As an improvement, keeping away from of supporting part the protruding stopper that is equipped with of one end of main part, magnetism bowl edge fastening just correspond on the supporting part the stopper is sunken to be formed with and to let the position portion, the injecting glue mouth with let the position portion interval set up.

As an improvement, the glue containing grooves are symmetrically distributed at four corners of the basin frame, and the glue injection ports correspond to the glue containing grooves one to one.

As an improvement, the basin stand is rectangular, and the glue containing grooves are distributed on two long edges of the basin stand.

As an improvement, the cross section of the glue containing groove is circular.

As an improvement, the magnetic circuit system further comprises an upper clamp plate injection-molded on the main body portion, the upper clamp plate being disposed between the magnet and the main body portion.

The invention has the beneficial effects that: according to the sound production device, the glue containing groove is formed between the edge of the magnet and the supporting part, the glue is filled in the glue containing groove, and the impact force is buffered and released through the glue, so that the magnet and the basin frame are protected, and the capability of resisting the falling failure condition of the sound production device is improved.

[ description of the drawings ]

FIG. 1 is a perspective view of a sound device in an embodiment of the present invention;

FIG. 2 is an exploded view of the sound device in an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a sound device in an embodiment of the present invention.

[ detailed description ] embodiments

The invention will be described in further detail below with reference to the accompanying fig. 1 to 3 in order to better understand the solution of the invention and its advantages in various aspects. In the following examples, the following detailed description is provided to facilitate a more thorough understanding of the present disclosure and is not intended to limit the invention. Where words such as upper, lower, left, right, etc. indicate orientation, then only the position of the illustrated structure in the corresponding figure is considered.

As shown in fig. 1, the sound generating device provided by the present invention includes a frame 4, and a magnetic circuit system 6 and a vibration system 3 fixed on the frame 4, the vibration system includes a diaphragm 30 fixed at one end of the frame 4, a dome 31 attached to the middle of the diaphragm 30, and a voice coil (not shown) driving the diaphragm 30 and the dome 31, the frame 4 includes a main body portion 41 for fixing the diaphragm 30, and a support portion 42 partially extending from a side of the main body portion 41 away from the diaphragm 30 toward a direction away from the diaphragm 30.

Magnetic circuit 6 includes the fixed support at the magnetic bowl 62 of supporting part 42 one end and sets up the magnet 60a between main part 41 and

magnetic bowl

62, 60b, this magnet extends to the basin frame 4 edge, the magnet edge is close to the sunken depressed part 601 that is formed in one side of supporting part 42, supporting part 42 corresponds to sunken the dodging portion 421 that forms and communicate with depressed part 601 towards keeping away from the magnet direction, depressed part 601 and dodging portion 421 enclose into and hold gluey groove 500, magnetic bowl 62 corresponds the injecting glue mouth 621 of seting up and holding gluey groove 500 intercommunication, hold gluey groove 500 and extend to main part 41 from the side surface that main part 41 was kept away from to magnet 60, it is filled with damping glue 50 to hold gluey inslot 500 intussuseption.

After filling the damping glue 50 in the glue containing groove 500, when the falling process receives impact force, the damping glue 50 filled in the glue containing groove 500 is connected between the basin frame and the magnet to play a buffering role, so that the impact on the structural member is reduced, and the risk of damage to the structural member is reduced.

As shown in fig. 2, the supporting portion 42 includes at least two supporting portions, and the two supporting portions are symmetrically distributed around the periphery of the magnet.

The magnet comprises a main magnet 60a fixed in the middle of the magnetic bowl 62 and an edge magnet 60b arranged at intervals with the main magnet 60a and arranged on the periphery of the magnetic bowl 62, the edge magnet 60b is fixed between two adjacent supporting parts 42, and a recess 601 is formed at one end of the edge magnet 60b close to the supporting parts 42.

The magnetic circuit system 6 further includes an upper plate 61 injection-molded to the main body portion 41, the upper plate 61 being disposed between the magnet and the main body portion 41.

The main body 41 is a square frame structure, the support portion 42 is correspondingly disposed at the corner of the main body 41, the magnetic bowl 62 is fixed on the support portion 42 in a sheet shape, and the glue injection port 621 is formed by inward recess from the edge of the magnetic bowl 62.

Specifically, the one end of the supporting portion 42 that is far away from the main body portion 41 is provided with a protruding stopper 422, the edge of the magnetic bowl 62 is fixed on the supporting portion 42 and is formed with a yielding portion 622 corresponding to the recess of the stopper 422, and the glue injection port 621 is arranged at an interval with the yielding portion 622.

The number of the glue containing grooves 500 may be one, two or more, in the embodiment of the present invention, the number of the glue containing grooves is four, the cross section of the glue containing grooves 500 is circular, the glue containing grooves 500 are symmetrically distributed at four corners of the basin stand 4, and the glue injection ports 621 correspond to the glue containing grooves 500 one to one.

Specifically, as shown in fig. 1, the frame 4 is rectangular, and the glue receiving grooves 500 are distributed on two long sides of the frame 4.

Therefore, when the sounding device falls, the stress of the falling sounding device can be effectively buffered no matter whether the long side is grounded, the short side is grounded, the large side is grounded or the right angle is grounded, and the conditions of deformation, breakage, glue peeling and the like of the sounding device are reduced.

Compared with the prior art, the sound production device provided by the embodiment of the invention is provided with the glue containing groove between the edge of the magnet and the supporting part 42, the glue containing groove is filled with glue, and impact force is buffered and released through the glue, so that the magnet and the basin stand are protected, and the capability of resisting the falling failure condition of the sound production device is improved.

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 sounding device, includes the basin frame and fixes magnetic circuit and vibration system on the basin frame, vibration system is including fixing the vibrating diaphragm of basin frame one end, its characterized in that:

the basin frame comprises a main body part for fixing the vibrating diaphragm and a supporting part partially extending from one side of the main body part, which is far away from the vibrating diaphragm, to the direction far away from the vibrating diaphragm, wherein the supporting part comprises at least two parts which are arranged at intervals; the magnetic circuit system comprises a magnetic bowl fixedly supported at one end of the supporting part and a magnet arranged between the main body part and the magnetic bowl, the magnet extends to the edge of the basin frame, the magnet comprises edge magnetic steel arranged on the periphery of the magnetic bowl, the edge magnetic steel is fixed between two adjacent supporting parts, and the edge magnetic steel is exposed out of the basin frame through the interval between the two adjacent supporting parts; the edge of the magnet is close to one side of the supporting portion is sunken to form a sunken portion, the supporting portion is correspondingly far away from the magnet, the direction of the magnet is sunken to form an avoiding portion communicated with the sunken portion, the sunken portion and the avoiding portion are enclosed to form a glue containing groove, the magnetic bowl is correspondingly provided with a glue injection port communicated with the glue containing groove, the glue containing groove is formed in the way that the magnet is far away from one side surface of the main body portion extends to the main body portion, and damping glue is filled in the glue containing groove.

2. The sounder device according to claim 1, wherein at least two of the support portions are symmetrically distributed about the periphery of the magnet.

3. The sounding device as claimed in claim 2, wherein the magnet further comprises a main magnetic steel fixed in the middle of the magnetic bowl and spaced from the side magnetic steel, and the recess is formed at an end of the side magnetic steel close to the supporting portion.

4. The sounding device according to claim 1, wherein the main body portion is square, the support portion is correspondingly disposed at a corner of the main body portion, the magnetic bowl is fixed to the support portion in a sheet shape, and the glue injection port is formed by inward recessing of an edge of the magnetic bowl.

5. The sound production device according to claim 4, wherein a limiting block is convexly arranged at one end of the supporting part, which is far away from the main body part, the edge of the magnetic bowl is fixed on the supporting part and is recessed to form a yielding part corresponding to the limiting block, and the glue injection port and the yielding part are arranged at intervals.

6. The sound production device according to claim 5, wherein the glue containing grooves are symmetrically distributed at four corners of the basin frame, and the glue injection ports are in one-to-one correspondence with the glue containing grooves.

7. The sounder device according to claim 5, wherein the frame is rectangular, and the glue receiving slots are distributed at ends of two long sides of the frame.

8. The sound production device of any one of claims 1 to 7, wherein the glue receiving slot is circular in cross-section.

9. The sounder device according to any one of claims 1 to 7, wherein the magnetic circuit system further comprises an upper clamp plate injection molded to the body portion, the upper clamp plate being disposed between the magnet and the body portion.