CN212628404U

CN212628404U - Loudspeaker

Info

Publication number: CN212628404U
Application number: CN202021322695.2U
Authority: CN
Inventors: 肖波; 令狐荣林; 孔晨亮; 章统
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-02-26
Anticipated expiration: 2030-07-06
Also published as: WO2022006943A1

Abstract

The utility model provides a loudspeaker, which comprises a magnetic basin fixedly connected with a support ring, a connecting ring surrounding the magnetic basin and fixed with the magnetic basin, and a sound film positioned at one side of a first vibrating diaphragm away from a first magnetic circuit system; the sound film is fixed on the connecting ring, and the sound film, the supporting ring, the magnetic basin and the second side wall surround to form a closed sound production cavity; the side wall is fixed in the go-between and keeps away from one side of magnetism basin, and the lateral wall is to keeping away from the protruding conduction groove that extends formation and external intercommunication of go-between direction, is equipped with on the go-between along the breach that perpendicular vibration direction runs through it on, and the breach forms the conduction channel with conduction groove and intercommunication, and the conduction channel intercommunication is sounded the chamber and external. The utility model discloses a locate the go-between with the sound membrane lid and form the cavity with the basin frame together, set up the air guide channel that recess and go-between shaping constitute the speaker together on the inside wall that the sound membrane is close to the go-between, for plastics or the effectual space of having saved of metal material.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

With the development of mobile communication technology, more and more mobile electronic devices become indispensable tools for people's daily life, such as smart phones, tablet computers, and the like. Due to the development trend of high quality and thin type of mobile electronic devices, the speaker is an essential component of the mobile electronic devices, and its high acoustic performance and space saving of the component are the development direction of the speaker.

The loudspeaker in the prior art comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a magnetic yoke, magnetic steel arranged on the magnetic yoke and a pole core attached to the magnetic steel, the vibration system comprises a vibrating diaphragm and a voice coil for driving the vibrating diaphragm to vibrate, the voice coil surrounds the magnetic steel, and air pressure can be formed in a gap between the vibrating diaphragm and the pole core when the vibrating diaphragm vibrates, so that an air guide channel which is communicated with the outside can be arranged in the loudspeaker, but the air guide pipeline made of plastics and metal materials in the prior art occupies a large space and is not in line with the development trend of saving space.

Therefore, there is a need to provide a new structure of an air guide duct of a speaker to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a sound membrane constitutes speaker of air duct new construction of speaker with go-between shaping.

The technical scheme of the utility model as follows: a loudspeaker comprises a support ring, a first magnetic circuit system fixed on one side of the support ring, and a first vibration system supported on the other side of the support ring, wherein the first vibration system is provided with a first diaphragm fixedly connected with the other side of the support ring and a first voice coil driving the first diaphragm to vibrate; the sound film comprises a panel and a side wall, wherein the panel is opposite to the first vibrating diaphragm at intervals, and the side wall is bent and extended from the edge of the panel and fixed with the connecting ring; the side wall is fixed on one side, far away from the magnetic basin, of the connecting ring, the side wall protrudes and extends in the direction far away from the connecting ring to form a conduction groove communicated with the outside, a notch penetrating through the connecting ring in the vertical vibration direction is formed in the connecting ring, the notch, the conduction groove and the conduction groove are communicated to form a conduction channel, and the conduction channel is communicated with the sounding cavity and the outside.

Preferably, the sound diaphragm and the connecting ring are of an integrally formed structure.

Preferably, the conduction groove extends from one end of the side wall close to the panel to one end far away from the panel.

Preferably, the side walls of the sound film include two major axis side walls and two minor axis side walls, and the conduction grooves are respectively disposed on the two minor axis side walls.

Preferably, the first magnetic circuit system comprises a first magnetic steel fixedly arranged in the accommodating space of the magnetic basin and a first pole core fixedly connected with one side of the first magnetic steel, which is far away from the magnetic basin; the magnetic basin comprises a bottom wall fixedly connected with first magnetic steel, a side wall surrounding the bottom wall and opposite to the first magnetic steel at intervals to form a first magnetic gap, a first extending part extending from the side wall and connected with the support ring, and a second extending part extending from the first extending part and fixedly connected with the first side wall of the connecting ring; the first voice coil is suspended in the first magnetic gap.

Preferably, the first diaphragm includes a first central portion located in a central region of the first diaphragm, a first collar portion surrounding the first central portion, and a first fixing portion extending from the first collar portion to a position far away from the central portion and connected to the support ring, and the fixing portion is provided with a first ball top portion for enhancing hardness.

Preferably, the loudspeaker further comprises a second magnetic circuit system and a second vibration system which are fixedly arranged on one side of the magnetic basin, which is far away from the first magnetic steel.

Preferably, the second magnetic circuit system comprises a first main magnetic steel fixed on one side of the magnetic basin departing from the first magnetic steel, a first auxiliary magnetic steel surrounding the first main magnetic steel and spaced apart from the first main magnetic steel, a second main pole core attached to one side of the first main magnetic steel departing from the magnetic basin, a second auxiliary pole core attached to one side of the first auxiliary magnetic steel departing from the magnetic basin, a second main magnetic steel attached to one side of the second main pole core departing from the first main magnetic steel, a second auxiliary magnetic steel surrounding the second main magnetic steel and spaced apart from the second main magnetic steel, and a clamping plate fixedly arranged on one side of the second main magnetic steel departing from the second main pole core; a second magnetic gap is formed between the first main magnetic steel and the first auxiliary magnetic steel, and a third magnetic gap communicated with the second magnetic gap is formed between the second main magnetic steel and the second auxiliary magnetic steel.

Preferably, the central region of the clamping plate is provided with a through hole penetrating through the clamping plate, the second main magnetic steel part is arranged in the through hole and is arranged at intervals with the periphery of the through hole, and a first connecting part connected with the through hole and the second main magnetic steel part is further arranged between the through hole and the second main magnetic steel part.

Preferably, the speaker still include with the basin frame that the magnetism basin deviates from first magnet steel one side and links to each other, second vibration system include with the first supplementary vibrating diaphragm that the basin frame links to each other, arrange in the basin frame and with first supplementary vibrating diaphragm is kept away from magnetism basin one side fixed connection's second support, be fixed in the second support and suspension in the second voice coil loudspeaker voice coil in second magnetism clearance and third magnetism clearance, be fixed in the basin frame is kept away from the second vibrating diaphragm of magnetism basin one side.

Preferably, the second diaphragm includes a second dome portion disposed in the central region and fixedly connected to a side of the second support away from the magnetic basin, a second flange portion surrounding the second dome portion, a second connection portion extending from the second flange portion to the second dome portion, and a second fixing portion extending from the second flange portion to the side away from the second dome portion; the center area of the top of the second sphere is provided with a first through hole penetrating through the center area, one end of a second auxiliary vibrating diaphragm fixedly connected with the top of the second sphere is arranged at the first through hole, and the other end of the second auxiliary vibrating diaphragm is fixedly connected with the clamping plate.

Preferably, the loudspeaker still including arrange in first support between first voice coil loudspeaker voice coil and the first vibrating diaphragm, paste locate keep away from on first support and the support ring the first flexible circuit board of magnetism basin one side and arrange in between basin frame and the magnetism basin and with the second flexible circuit board of second leg joint, first flexible circuit board still include with first surface that first vibrating diaphragm is connected and with the pin that the second flexible circuit board is electric is connected, the pin by first flexible circuit board is followed support ring and magnetism basin court the second flexible circuit board is close to one side extension formation of magnetism basin.

The beneficial effects of the utility model reside in that: the utility model discloses a locate the go-between with the sound membrane lid and form the cavity with the basin frame together, set up the air guide channel that recess and go-between shaping constitute the speaker together on the inside wall that the sound membrane is close to the go-between, for plastics or the effectual space of having saved of metal material.

[ description of the drawings ]

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

fig. 2 is a schematic perspective view of the speaker of the present invention at another viewing angle;

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

FIG. 4 is an exploded view of FIG. 1;

FIG. 5 is an exploded view in another orientation of FIG. 1;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 1;

fig. 7 is a sectional view taken along the direction B-B in fig. 1.

[ detailed description ] embodiments

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

The utility model provides a loudspeaker 100, as shown in fig. 1-7, loudspeaker 100 is a two-sided sound monomer. The loudspeaker 100 comprises a support ring 12, a first magnetic circuit system 13 fixed on one side of the support ring 12, and a first vibration system 14 supported on the other side of the support ring 12, wherein the first vibration system 14 is provided with a first diaphragm 143 fixedly connected with the other side of the support ring 12 and a first voice coil 141 driving the first diaphragm 143 to vibrate. The first magnetic circuit system 13 includes a magnetic basin 131 fixedly connected to the support ring 12, the speaker 100 further includes a connection ring 2 surrounding the magnetic basin 131 and fixed to the magnetic basin 131, and a sound membrane 3 located on a side of the first diaphragm 143 away from the first magnetic circuit system 13, the sound membrane 3 is fixed to the connection ring 2, and the connection ring 2 includes a first side wall 21 fixedly connected to the first magnetic circuit system 13 and a second side wall 22 opposite to the first side wall 21 and abutting against the side wall 32 of the sound membrane 3. The sound film 3, the support ring 12, the magnetic basin 131 and the second side wall 22 surround to form a closed sounding cavity 19; the sound film 3 comprises a panel 31 which is opposite to the first diaphragm 143 at intervals, and a side wall 32 which is bent and extended from the edge of the panel 31 and fixed with the connecting ring 2; the side wall 32 is fixed on one side of the connection ring 2 far away from the magnetic basin 131, the side wall 32 protrudes and extends towards the direction far away from the connection ring 2 to form a conduction groove 34 communicated with the outside, the connection ring 2 is provided with a notch 23 penetrating through the connection ring along the vertical vibration direction, the notch 23 is communicated with the conduction groove 34 to form a conduction channel 35, and the conduction channel 35 is communicated with the sounding cavity 19 and the outside. The utility model provides a establish sound membrane 3 on go-between 2 through go-between 2 and lid and basin frame 11 constitute cavity 5 together and set up the recess and set up breach 23 and shaping together at the lateral wall of go-between 2 at the inside wall 331 of sound membrane 3 and constitute speaker 100's conduction channel 35 new construction's speaker, can effectual save space for plastics or metal material's air guide channel. Preferably, the sound diaphragm 3 and the connection ring 2 are integrally formed. The sealing performance of the structure is guaranteed by integral forming. Preferably, the conduction groove 34 extends from an end of the sidewall 32 close to the panel 31 to an end far from the panel 31. The through-flow groove 34 is further beneficial to smooth airflow, so that the noise effect and the exhaust smoothness are not affected by airflow disturbance. Preferably, the side walls 1312 of the diaphragm 3 include two long-axis side walls 32 and two short-axis side walls 33, and the conduction grooves 34 are respectively disposed on the two short-axis side walls 33. The conduction grooves 34 are arranged on the short-axis side wall 33, so that the distance between the two groups of conduction grooves 34 is increased, and mutual influence is avoided.

As shown in fig. 1-7, preferably, the first magnetic circuit system 13 includes a first magnetic steel 132, and the ceramic magnetic basin 131 has an accommodating space 111, the first magnetic steel 132 is fixedly disposed in the accommodating space 111 of the magnetic basin 131, and a first pole core 133 fixedly connected to a side of the first magnetic steel 132 away from the magnetic basin 131; the magnetic basin 131 includes a bottom wall 1311 fixedly connected to the first magnetic steel 132, a side wall 1312 surrounding the bottom wall 1311 and spaced apart from and facing the first magnetic steel 132 to form the first magnetic gap 134, a first extension 1313 extending from the side wall 1312 and connected to the support ring 12, and a second extension 1314 extending from the first extension 1313 and fixedly connected to the first side wall 21 of the connection ring 2. A first voice coil 141 is suspended in the first magnetic gap 134. The specific arrangement structure of the first magnetic circuit system 13 is provided, and the overall sound effect of the loudspeaker is ensured by ensuring the precision of the arrangement structure. Preferably, the first diaphragm 143 includes a first center portion 1433 located in a center region of the first diaphragm 143, a first collar portion 1432 surrounding the first center portion 1433, and a first fixing portion 1434 extending from the first collar portion 1432 to a position far away from the first center portion 1433 and connected to the support ring 12, and the first fixing portion 1434 is provided with a first dome portion 1431 for enhancing stiffness. Also, the first diaphragm 143 is configured to be implemented in cooperation with other components to ensure an acoustic effect.

It should be noted that the connection ring 2 is an important component of the sound generating chamber 19 of the present invention, and the structure form thereof is specifically as shown in fig. 5, the connection ring 2 is a rectangular ring shape surrounding the first magnetic circuit system 13 and the first vibration system 14 and fixed on the frame 11, and the connection ring 2 includes two major axis sides x and two minor axis sides y. The length of the major axis x and the minor axis y is relative, and x and y are distinguished in the figure and cannot be understood as limiting the protection scope. The air pressure generated in the cavity 5 when the first diaphragm 143 vibrates can be guided out of the air flow through the air guide channel 4 along the air flow conducting direction (arrow direction) as shown in fig. 6, so as to balance the air pressure.

Preferably, the speaker 100 further includes a second magnetic circuit system 16 and a second vibration system 17 fixedly disposed on a side of the cone 131 facing away from the first magnetic steel 132. Preferably, the second magnetic circuit system 16 includes a first main magnetic steel 162 fixed on one side of the magnetic basin 131 departing from the first magnetic steel 132, a first auxiliary magnetic steel 163 surrounding the first main magnetic steel 162 and spaced apart from the first main magnetic steel 162, a second main pole core 166 attached to one side of the first main magnetic steel 162 departing from the magnetic basin 131, a second auxiliary pole core 167 attached to one side of the first auxiliary magnetic steel 163 departing from the magnetic basin 131, a second main magnetic steel 164 attached to one side of the second main pole core 166 departing from the first main magnetic steel 162, a second auxiliary magnetic steel 165 surrounding the second main magnetic steel 164 and spaced apart from the second main magnetic steel 164, and a clamping plate 161 fixedly arranged on one side of the second main magnetic steel 164 departing from the second main pole core 166; a second magnetic gap 167 is formed between the first main magnetic steel 162 and the first sub magnetic steel 163, and a third magnetic gap 168 that is electrically connected to the second magnetic gap 167 is formed between the second main magnetic steel 164 and the second sub magnetic steel 165. Preferably, the central region of the clamping plate 161 is provided with a through hole 1611 penetrating therethrough, the second main magnetic steel 164 is partially disposed in the through hole 1611 and spaced from the periphery of the through hole 1611, and a first connecting portion 1751 connected to the through hole 1611 and the second main magnetic steel 164 is further disposed between the two. Preferably, the speaker 100 further includes a frame 11 connected to a side of the magnetic basin 131 away from the first magnetic steel 132, and the second vibration system 17 includes a first auxiliary diaphragm 171 connected to the frame 11, a second support 172 disposed in the frame 11 and fixedly connected to a side of the first auxiliary diaphragm 171 away from the magnetic basin 131, a second voice coil 173 fixed to the second support 172 and suspended in the second magnetic gap 167 and the third magnetic gap 168, and a second diaphragm 174 fixed to a side of the frame 11 away from the magnetic basin 131. Preferably, the second diaphragm 174 includes a second dome portion 1741 disposed in the central region and fixedly connected to a side of the second support 172 away from the magnetic cup 131, a second flange portion 1742 surrounding the second dome portion 1741, a second connecting portion 1743 extending from the second flange portion 1742 to the second dome portion 1741, and a second fixing portion 1744 extending from the second flange portion 1742 to a side away from the second dome portion 1741; a first through hole 1611 is formed in the central region of the second dome 1741, a second auxiliary diaphragm 175 is disposed at the first through hole 1611, one end of the second auxiliary diaphragm 175 is fixedly connected to the second dome 1741, and the other end of the second auxiliary diaphragm 175 is fixedly connected to the clamp plate 161. Preferably, the speaker 100 further includes a first support 142 disposed between the first voice coil 141 and the first diaphragm 143, a first flexible circuit board 15 attached to one side of the first support 142 and the support ring 12 away from the magnetic basin 131, and a second flexible circuit board 18 disposed between the frame 11 and the magnetic basin 131 and connected to the second support 172, the first flexible circuit board 15 further includes a first surface 151 connected to the first diaphragm 143 and a pin 152 electrically connected to the second flexible circuit board 18, and the pin 152 is formed by extending the first flexible circuit board 15 along the support ring 12 and the magnetic basin 131 toward one side of the second flexible circuit board 18 close to the magnetic basin 131. Given the above description of all the components and the structural form of the accessories of the loudspeaker 100, and the mutual positional relationship and connection relationship, the combination of the components can be matched to form a loudspeaker with good acoustic effect.

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 support ring, a first magnetic circuit system fixed on one side of the support ring, and a first vibration system supported on the other side of the support ring, wherein the first vibration system is provided with a first diaphragm fixedly connected with the other side of the support ring and a first voice coil for driving the first diaphragm to vibrate; the sound film comprises a panel and a side wall, wherein the panel is opposite to the first vibrating diaphragm at intervals, and the side wall is bent and extended from the edge of the panel and fixed with the connecting ring; the side wall is fixed on one side, far away from the magnetic basin, of the connecting ring, the side wall protrudes and extends in the direction far away from the connecting ring to form a conduction groove communicated with the outside, a notch penetrating through the connecting ring in the vertical vibration direction is formed in the connecting ring, the notch, the conduction groove and the conduction groove are communicated to form a conduction channel, and the conduction channel is communicated with the sounding cavity and the outside.

2. A loudspeaker according to claim 1, wherein the diaphragm and the coupling ring are of one-piece construction.

3. A loudspeaker according to claim 1, wherein the conductive channel extends from an end of the side wall adjacent the panel to an end remote from the panel.

4. The loudspeaker of claim 1, wherein the side walls of the diaphragm include two major axis side walls and two minor axis side walls, and the conduction grooves are respectively disposed on the two minor axis side walls.

5. The loudspeaker of claim 1, wherein the first magnetic circuit system comprises a first magnetic steel fixedly arranged in the accommodating space of the magnetic basin, and a first pole core fixedly connected with one side of the first magnetic steel, which is far away from the magnetic basin; the magnetic basin comprises a bottom wall fixedly connected with first magnetic steel, a side wall surrounding the bottom wall and opposite to the first magnetic steel at intervals to form a first magnetic gap, a first extending part extending from the side wall and connected with the support ring, and a second extending part extending from the first extending part and fixedly connected with the first side wall of the connecting ring; the first voice coil is suspended in the first magnetic gap.

6. The loudspeaker of claim 1, wherein the first diaphragm includes a first center portion located in a center region of the first diaphragm, a first collar portion surrounding the first center portion, and a first anchor portion extending from the first collar portion away from the center portion and connected to the support ring, the anchor portion having a first dome portion with increased stiffness.

7. The loudspeaker of claim 5, further comprising a second magnetic circuit system and a second vibration system fixedly arranged on a side of the magnetic basin facing away from the first magnetic steel.

8. The loudspeaker of claim 7, wherein the second magnetic circuit system comprises a first main magnetic steel fixed on a side of the magnetic basin facing away from the first magnetic steel, a first auxiliary magnetic steel surrounding the first main magnetic steel and spaced apart from the first main magnetic steel, a second main pole core attached to a side of the first main magnetic steel facing away from the magnetic basin, a second auxiliary pole core attached to a side of the first auxiliary magnetic steel facing away from the magnetic basin, a second main magnetic steel attached to a side of the second main pole core facing away from the first main magnetic steel, a second auxiliary magnetic steel surrounding the second main magnetic steel and spaced apart from the second main magnetic steel, and a clamp plate fixedly attached to a side of the second main magnetic steel facing away from the second main pole core; a second magnetic gap is formed between the first main magnetic steel and the first auxiliary magnetic steel, and a third magnetic gap communicated with the second magnetic gap is formed between the second main magnetic steel and the second auxiliary magnetic steel.

9. The loudspeaker of claim 8, wherein the central region of the clamping plate is provided with a through hole passing through the clamping plate, the second main magnetic steel part is arranged in the through hole and is arranged at intervals with the periphery of the through hole, and a first connecting part connected with the through hole and the second main magnetic steel part is arranged between the through hole and the second main magnetic steel part.

10. The loudspeaker of claim 8, further comprising a frame connected to a side of the magnetic basin facing away from the first magnetic steel, wherein the second vibration system comprises a first auxiliary diaphragm connected to the frame, a second support disposed in the frame and fixed to a side of the magnetic basin, a second voice coil fixed to the second support and suspended in the second magnetic gap and the third magnetic gap, and a second diaphragm fixed to a side of the frame facing away from the magnetic basin, wherein the second auxiliary diaphragm is connected to the frame, the second support is fixed to the second support and suspended in the second magnetic gap and the third magnetic gap.

11. The loudspeaker of claim 10, wherein the second diaphragm comprises a second dome portion disposed in the central region and fixedly connected to a side of the second support away from the magnetic bowl, a second flange portion surrounding the second dome portion, a second connecting portion extending from the second flange portion toward the second dome portion, and a second fixing portion extending from the second flange portion toward the second dome portion; the center area of the top of the second sphere is provided with a first through hole penetrating through the center area, one end of a second auxiliary vibrating diaphragm fixedly connected with the top of the second sphere is arranged at the first through hole, and the other end of the second auxiliary vibrating diaphragm is fixedly connected with the clamping plate.

12. The loudspeaker of claim 10, further comprising a first support disposed between the first voice coil and the first diaphragm, a first flexible circuit board attached to one side of the first support and the support ring away from the magnetic basin, and a second flexible circuit board disposed between the frame and the magnetic basin and connected to the second support, wherein the first flexible circuit board further comprises a first surface connected to the first diaphragm and a pin electrically connected to the second flexible circuit board, and the pin is formed by extending the first flexible circuit board along the support ring and the magnetic basin toward one side of the second flexible circuit board close to the magnetic basin.