CN212628405U

CN212628405U - Loudspeaker box

Info

Publication number: CN212628405U
Application number: CN202021323362.1U
Authority: CN
Inventors: 吴军; 印兆宇
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-26
Anticipated expiration: 2030-07-07
Also published as: WO2022007023A1

Abstract

The utility model provides a loudspeaker box, which comprises a shell with an accommodating space, a sounding monomer accommodated in the accommodating space of the shell and a breathable isolating piece accommodated in the accommodating space and covered on the sounding monomer; the shell includes upper cover and lower cover, the sound production monomer is including the magnetic circuit that has the yoke, the lower cover includes the diapire, locates mounting hole on the diapire and enclose to close and form the pore wall of mounting hole, the yoke includes the yoke body and locates the first block portion at yoke body edge, and the yoke body is installed in the mounting hole and is exposed in accommodating space, and ventilative separator includes the cover body and the second block portion that extends out from the one end of the cover body, covers the body cover and establishes and hugs closely in the yoke body, second block portion and first block portion joint so that the yoke body exposes from the mounting hole. The packaging mode of the breathable partition, the sounding single body and the lower cover of the loudspeaker box forms a full-filling design, and the volume of the rear cavity is effectively utilized.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a loudspeaker box.

[ background of the invention ]

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

A speaker box of the related art includes a housing having an accommodating space and a sound generating unit accommodated in the housing, and the sound generating unit divides the accommodating space into a front cavity and a rear cavity. The speaker box of the related art further includes a retaining wall disposed in the rear cavity and spaced apart from the sound-generating unit, and an air-permeable member disposed on the retaining wall. The retaining wall and the ventilation piece are matched to separate the rear cavity into an independent space for filling sound absorption particles. The barricade with the picture peg has occupied the space of back chamber makes the volume utilization ratio of back chamber is low, and then can't further improve the acoustic performance of speaker box.

Therefore, a new speaker box must be provided to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide an improve speaker box of back chamber utilization ratio.

In order to achieve the above object, the present invention provides a speaker box, which comprises a housing having an accommodating space, a sounding unit accommodated in the accommodating space of the housing, and a breathable partition accommodated in the accommodating space and covering the sounding unit, wherein the sounding unit and the breathable partition jointly divide the accommodating space into a front cavity and a rear cavity; the casing comprises an upper cover and a lower cover, the sounding unit is fixed on the lower cover and comprises a basin frame fixed on the casing, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound, and the magnetic circuit system comprises a magnetic yoke fixed on the lower cover; the lower cover comprises a bottom wall, a mounting hole formed in the bottom wall and a hole wall surrounding the mounting hole, the magnet yoke is mounted in the mounting hole and exposed in the accommodating space, sound-absorbing particles are filled in the back cavity, the sound-absorbing particles are packaged in the back cavity by the breathable partition, the sounding monomer is provided with an inner cavity, the basin frame and the magnet yoke form a communicating part at an interval, the inner cavity sequentially passes through the communicating part and the breathable partition and is communicated with the back cavity, the magnet yoke comprises a magnet yoke body and a first clamping part arranged at the edge of the magnet yoke body, the breathable partition comprises a cover body and a first fixing part and a second clamping part which extend from two ends of the cover body, the first fixing part is connected with the basin frame, and the cover body is arranged around the sounding monomer and completely covers the communicating part, the cover body is sleeved and tightly attached to the magnetic yoke, and the second clamping portion is clamped with the first clamping portion so that the magnetic yoke body is exposed out of the mounting hole.

Preferably, the breathable partition piece further comprises a sleeve hole formed by the first fixing portion and the cover body in a surrounding mode, the magnet yoke body is contained in the sleeve hole, and the first fixing portion is bent and horizontally extends from one end, away from the second clamping portion, of the cover body towards the direction away from the sleeve hole.

Preferably, the first engaging portion is a stepped structure disposed at an edge of the magnetic yoke body, the second engaging portion is bent and horizontally extended from an end of the cover body away from the first fixing portion toward the inside of the sleeve hole, and the second engaging portion abuts against the first engaging portion.

Preferably, ventilative separator is still including locating dodge the hole on the first fixed part, vibration system is including being fixed in vibrating diaphragm, the drive of basin frame the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production and be fixed in the basin frame and with the relative just elastic support subassembly that the interval set up of vibrating diaphragm, dodge the hole with elastic support subassembly corresponds.

Preferably, the elastic support subassembly is including connecting the vibrating diaphragm with the link of voice coil loudspeaker voice coil, connection the link with the first elastic component of basin frame and with first elastic component is kept away from supplementary membrane and the second elastic component that the one end of link is connected, dodge the hole with the second elastic component corresponds.

Preferably, the first elastic piece with the second elastic piece is flexible circuit board, the first elastic piece with second elastic piece electric connection, the second elastic piece be equipped with dodge the just right pad in hole.

Preferably, the basin frame includes the basin frame body, certainly the basin frame body is close to the extension arm that a plurality of intervals that magnetic circuit's one end stretches out set up and locate the extension arm is close to one of the basin frame body is served inserting groove, the yoke is still including locating the yoke body link up the mounting groove of first block portion, the extension arm inserts and is fixed in the mounting groove, so that the yoke body with basin frame body fixed connection is in the same place.

Compared with the prior art, the utility model provides an above-mentioned speaker box's ventilative separator and sound production monomer divide into front chamber and rear chamber with accommodating space jointly, the sound production monomer has the inner chamber, basin frame and yoke form the intercommunication portion near the one side interval of rear chamber, ventilative separator sets up and covers the intercommunication portion around sound production monomer week side completely, the inner chamber is in proper order through intercommunication portion and ventilative separator and rear chamber intercommunication, the rear chamber intussuseption is filled with the sound absorption granule, ventilative separator encapsulates the sound absorption granule in the rear chamber, above-mentioned structure makes the rear chamber fill and all regard as virtual sound chamber after filling the sound absorption granule, the low frequency acoustic performance of speaker box has effectively been improved; because of ventilative separator is fixed in the sound production monomer around establishing, the improvement of very big degree the volume of back chamber to effectively improved the filling efficiency of the sound granule of inhaling of back intracavity. The yoke includes the yoke body and locates the first block portion at yoke body edge, ventilative separator is including the cover body and certainly first fixed part and the second block portion that the both ends of the cover body extended, first fixed part with the basin frame is connected, the cover body encircles sound production monomer week side sets up and covers completely the intercommunication portion, cover the body cover establish and hug closely in the yoke, second block portion with first block portion joint is so that the yoke body certainly expose in the mounting hole. The firm connection among the breathable isolating piece, the sounding monomer and the shell is effectively realized. The packaging mode of the ventilating partition, the sounding monomer and the lower cover of the loudspeaker box forms a full-filling design, and the volume of the rear cavity is effectively utilized.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is an exploded view of a loudspeaker enclosure of the present invention;

fig. 2 is a schematic diagram of an explosion structure of the sounding unit shown in fig. 1;

FIG. 3 is a schematic view of the sound generating unit shown in FIG. 2 at another angle;

FIG. 4 is a perspective view of the breathable barrier of FIG. 1;

FIG. 5 is a schematic perspective view of the assembled speaker box of FIG. 1;

FIG. 6 is a schematic view of the speaker cabinet of FIG. 5 at another angle;

FIG. 7 is a schematic cross-sectional view of the speaker box of FIG. 6 taken along the line A-A;

fig. 8 is an enlarged schematic view of the loudspeaker enclosure of fig. 7 at B.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1-8 simultaneously, according to the utility model provides a speaker box 100, it includes the shell 10 that has accommodating space 40, accept in the shell 10 sound production monomer 20 in the accommodating space 40, accept in the accommodating space 40 and cover and locate sound production monomer 20's ventilative separator 30 and sealing member 50, sound production monomer 20 with ventilative separator 30 will accommodating space 40 separates into front chamber 41 and rear chamber 42 jointly, shell 10 be equipped with the filling hole 125 of rear chamber 42 intercommunication, speaker box 100 passes through filling hole 125 to rear chamber 42 intussuseption is filled with and is inhaled sound granule 60, ventilative separator 30 will inhale sound granule 60 and encapsulate in the rear chamber 42, sealing member 50 is used for sealing filling hole 125.

Specifically, the housing 10 includes an upper cover 11 and a lower cover 12, the upper cover 11 includes a top wall 111, a first side wall 112 extending from the top wall 111 along the bending direction, an annular retaining wall 113 protruding from the top wall 111, a protruding wall 114 protruding from the first side wall 112 towards the direction away from the annular retaining wall 113, and a positioning post 115 disposed on the protruding wall 114. The lower cover 12 includes a bottom wall 121, a second sidewall 122 bent and extended from an edge of the bottom wall 121, a mounting hole 123 disposed on the bottom wall 121, and a hole wall 124 enclosing the mounting hole 123, wherein the filling hole 125 is disposed on the bottom wall 121. The first side wall 112 and the second side wall 122 of the bottom wall 121 are joined to make the upper cover 11 and the lower cover 12 combined to form the accommodating space 40, one end of the sound generating unit 20 is mounted in the mounting hole 123, and the other end is mounted in the annular retaining wall 113. The sound generating unit 20 and the upper cover 11 are arranged at intervals to form the front cavity 41, and the sound generating unit 20, the upper cover 11 and the lower cover 12 enclose to form the rear cavity 42.

Further, the sounding unit 20 includes a frame 21, a vibration system 22 fixed to the frame 21, a magnetic circuit system 23 having a magnetic gap 235 and fixed to the frame 21, and a middle frame 24 sleeved and fixed to the frame 21, the vibration system 22 and the magnetic circuit system 23 enclose to form an inner cavity 25, the frame 21 and the magnetic circuit system 23 form a communicating portion 26 at an interval, the ventilation isolator 30 is covered on the magnetic circuit system 23 and connected to the middle frame 24, and the inner cavity 25 is communicated with the rear cavity 42 through the communicating portion 26 and the ventilation isolator 30 in sequence. Wherein, the vibration system 22 is installed on the annular retaining wall 113 and spaced apart from the top wall 111 to form the front cavity 41, and the magnetic circuit system 30 is installed in the installation hole 123 and exposed from the installation hole 123.

Specifically, the basin frame 21 is used for supporting the vibration system 22 and the magnetic circuit system 23, and includes a basin frame body 211, a plurality of extension arms 212 extending from one end of the basin frame body 211 close to the magnetic circuit system 23 at intervals, and an insertion groove 213 formed in one end of the extension arm 212 close to the basin frame body 211. The vibration system 11 is connected to the frame body 211, the middle frame 24 is fixed to the frame body 211, the magnetic circuit system 23 is connected to the extension arm 212, and the air-permeable isolation member 30 surrounds the extension arm 212 and the magnetic circuit system 23.

The vibration system 22 includes a vibration diaphragm 221 fixed on the cone frame body 211, a voice coil 222 inserted in the magnetic gap 235 to drive the vibration diaphragm 221 to vibrate and generate sound, and an elastic support member assembly 23 fixed on the cone frame body 211 and opposite to and spaced from the vibration diaphragm 221. The vibrating diaphragm 221 includes a folding ring 2211, a second fixing portion 2212 and a vibrating portion 2213 extending from two sides of the folding ring 2211, and a ball top 2214 fixed to the vibrating portion 2213, wherein the second fixing portion 2212 is connected to the frame body 211. The elastic support assembly 223 includes a connection frame 2231 connecting one end of the dome 2214 away from the vibrating portion 2213 and the voice coil 222, a first elastic member 2232 connecting the connection frame 2231 and the frame body 211, an auxiliary membrane 2233 and a second elastic member 2234 connected to one end of the first elastic member 2232 away from the connection frame 2231, and a positioning hole 2235 and a pad 2236 provided on the second elastic member 2234, the second elastic member 2234 is further connected to the middle frame 24, and the positioning hole 2235 is snapped into the positioning post 115 of the upper cover 11 to position and fix the second elastic member 2234. Optionally, the first elastic member 2232 and the second elastic member 2234 are both flexible circuit boards, and the first elastic member 2232 is electrically connected to the second elastic member 2234.

The magnetic circuit system 23 includes a magnetic yoke 231 fixedly connected with the extension arm 212 of the basin stand 211, a main magnetic steel 232 and a plurality of auxiliary magnetic steels 233 arranged on the magnetic yoke 231, a main pole core 234 covering the main magnetic steel 232, and an upper clamp plate 234 connected with the extension arm 212, wherein the magnetic yoke 231 is fixed on the lower cover 12. The plurality of secondary magnetic steels 233 and the primary magnetic steel 232 are arranged at intervals to form the magnetic gap 235. The upper clamping plate 234 comprises an annular part 2341 fixed on the frame 211, a plurality of auxiliary pole cores 2342 and a plug part 2343 arranged on the annular part 2341, the plug part 2343 is inserted into the plug groove 213 to fix the annular part 2341 on the frame 21, and the plurality of auxiliary pole cores 2342 are attached to one ends, far away from the magnetic yoke 231, of the plurality of auxiliary magnetic steels 233. The yoke 231 includes a yoke body 2311, a first engaging portion 2312 disposed at an edge of the yoke body 2311, and a mounting groove 2313 disposed at the yoke body 2311 and penetrating the first engaging portion 2312, and the extension arm 212 is inserted into and fixed to the mounting groove 2313, so that the yoke body 2311 and the frame body 211 are fixedly coupled together.

The breathable partition 30 includes a cover 32, a first fixing portion 31 and a second engaging portion 34 extending from two ends of the cover 32, a first fixing portion 31 and the cover 32 enclose to form a sleeve hole 33 and a avoiding hole 35 formed in the first fixing portion 31. The cover 32 is disposed around the sound generating unit 20 and completely covers the communication portion 26, and the cover 32 is sleeved on and closely attached to the yoke body 2311 of the yoke 231. The first fixing portion 31 is bent and horizontally extended from an end of the cover 32 far away from the second engaging portion 254 toward a direction far away from the sleeve hole 33, and the second engaging portion 254 is bent and horizontally extended from an end of the cover 32 far away from the first fixing portion 31 toward the sleeve hole 33. The first fixing portion 31 is fixed to an end of the second elastic member 2234 away from the middle frame 24, and is connected to the frame body 211 through the second elastic member 2234 and the middle frame 24. The avoiding hole 35 corresponds to the second elastic member 2234 of the elastic support assembly 223, and specifically, the avoiding hole 35 is opposite to the pad 2236 of the second elastic member 2234.

The cover 32 is sleeved on the yoke body 2311 to accommodate the yoke body 2311 in the sleeving hole 33, the cover 32 is clamped between the yoke body 2311 and the hole wall 124 of the lower cover 12, and the second engaging portion 254 is clamped with the first engaging portion 2312 to expose the yoke body 2311 from the mounting hole 123 of the upper cover 12. Optionally, the first engaging portion 2312 is a stepped structure disposed at an edge of the yoke body 2311, and the second engaging portion 254 presses against the first engaging portion 2312, so as to close the edge of the yoke body 2311.

The utility model provides a preceding chamber and back chamber are separated into with accommodating space to above-mentioned speaker box's ventilative separator and sound production monomer jointly, the sound production monomer has the inner chamber, basin frame and yoke form the intercommunication portion near the one side interval of back chamber, ventilative separator sets up and covers the intercommunication portion completely around sound production monomer week side, the inner chamber communicates with the back chamber through intercommunication portion and ventilative separator in proper order, the back chamber intussuseption is filled with sound-absorbing particle, ventilative separator encapsulates sound-absorbing particle in the back chamber, above-mentioned structure makes the back chamber fill pack and totally regard as virtual sound chamber after sound-absorbing particle, the low frequency acoustic performance of speaker box has effectively been improved; because of ventilative separator is fixed in the sound production monomer around establishing, the improvement of very big degree the volume of back chamber to effectively improved the filling efficiency of the sound granule of inhaling of back intracavity. The yoke includes the yoke body and locates the first block portion at yoke body edge, ventilative separator is including the cover body and certainly first fixed part and the second block portion that the both ends of the cover body extended, first fixed part with the basin frame is connected, the cover body encircles sound production monomer week side sets up and covers completely the intercommunication portion, cover the body cover establish and hug closely in the yoke, second block portion with first block portion joint is so that the yoke body certainly expose in the mounting hole. The firm connection among the breathable isolating piece, the sounding monomer and the shell is effectively realized.

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 box comprises a shell with an accommodating space, a sounding single body accommodated in the accommodating space of the shell and a breathable isolating piece accommodated in the accommodating space and covering the sounding single body, wherein the sounding single body and the breathable isolating piece jointly divide the accommodating space into a front cavity and a rear cavity; the casing comprises an upper cover and a lower cover, the sounding unit is fixed on the lower cover and comprises a basin frame fixed on the casing, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and sound, and the magnetic circuit system comprises a magnetic yoke fixed on the lower cover; the lower cover comprises a bottom wall, a mounting hole formed in the bottom wall and a hole wall formed by enclosing the mounting hole, the magnet yoke is mounted in the mounting hole and exposed in the accommodating space, sound-absorbing particles are filled in the back cavity, and the sound-absorbing particles are packaged in the back cavity by the breathable partition piece, and the lower cover is characterized in that the sounding monomer is provided with an inner cavity, the basin frame and the magnet yoke form a communicating part at an interval, the inner cavity sequentially passes through the communicating part and the breathable partition piece and is communicated with the back cavity, the magnet yoke comprises a magnet yoke body and a first clamping part arranged at the edge of the magnet yoke body, the breathable partition piece comprises a cover body and a first fixing part and a second clamping part which extend from two ends of the cover body, the first fixing part is connected with the basin frame, and the cover body surrounds the sounding monomer and is arranged on the periphery side and completely covers the communicating part, the cover body is sleeved and tightly attached to the magnetic yoke, and the second clamping portion is clamped with the first clamping portion so that the magnetic yoke body is exposed out of the mounting hole.

2. The speaker box according to claim 1, wherein the air-permeable partition further includes a socket hole defined by the first fixing portion and the cover, the yoke body is received in the socket hole, and the first fixing portion is bent and horizontally extended from an end of the cover away from the second engaging portion toward a direction away from the socket hole.

3. The speaker box of claim 2, wherein the first engaging portion is a stepped structure disposed on an edge of the magnetic yoke body, the second engaging portion is bent from an end of the cover body away from the first fixing portion toward the inside of the socket hole and extends horizontally, and the second engaging portion presses against the first engaging portion.

4. The loudspeaker box of claim 1, wherein the breathable partition further comprises an avoiding hole formed in the first fixing portion, the vibration system comprises a diaphragm fixed on the frame, a voice coil for driving the diaphragm to vibrate and generate sound, and an elastic supporting component fixed on the frame and opposite to the diaphragm and arranged at an interval, and the avoiding hole corresponds to the elastic supporting component.

5. The speaker box according to claim 4, wherein the elastic support assembly comprises a connection frame connecting the diaphragm and the voice coil, a first elastic member connecting the connection frame and the frame, and an auxiliary membrane and a second elastic member connected with one end of the first elastic member far away from the connection frame, and the avoiding hole corresponds to the second elastic member.

6. The speaker box according to claim 5, wherein the first elastic member and the second elastic member are both flexible circuit boards, the first elastic member is electrically connected to the second elastic member, and the second elastic member is provided with a pad opposite to the avoiding hole.

7. The speaker box according to claim 1, wherein the frame comprises a frame body, a plurality of extension arms extending from one end of the frame body near the magnetic circuit system and arranged at intervals, and an insertion groove arranged at one end of the extension arms near the frame body, the magnet yoke further comprises an installation groove arranged on the magnet yoke body and penetrating through the first clamping portion, and the extension arms are inserted into and fixed to the installation groove, so that the magnet yoke body and the frame body are fixedly connected together.