CN210641058U

CN210641058U - Loudspeaker

Info

Publication number: CN210641058U
Application number: CN201921603016.6U
Authority: CN
Inventors: 孟义明; 张古清
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-05-29
Anticipated expiration: 2029-09-24

Abstract

The utility model provides a loudspeaker, including first shell, speaker monomer and waterproof ventilated membrane, first shell has first inner chamber and the first opening that communicates first inner chamber, the speaker monomer is located in first inner chamber, the speaker monomer includes second shell, magnetic circuit and vibration system, the second shell has second inner chamber and the second opening that communicates second inner chamber, vibration system includes the vibrating diaphragm that is used for separating second inner chamber into preceding cavity and back cavity, magnetic circuit locates in the back cavity, back cavity communicates with first inner chamber, the second opening communicates with first opening, the second shell is equipped with at least one first through-hole that communicates first inner chamber and preceding cavity, waterproof ventilated membrane is installed in the second shell and covers first through-hole, can satisfy waterproof and normal acoustics function, can also balance the atmospheric pressure of the back cavity and the preceding cavity of speaker, the loudspeaker is not influenced by the pressure of the rear chamber and can keep normal operation.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an vocal ware technical field especially relates to a loudspeaker.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. While among many mobile devices, cell phones and wearable devices are undoubtedly the most common mobile terminal devices. At present, mobile terminal devices have various functions, one of which is a high-quality music function, and a speaker is one of the necessary conditions for implementing the high-quality music function. The loudspeaker monomer in the prior art comprises a shell with an inner cavity, a vibrating diaphragm system for vibrating and sounding and a magnetic circuit system for driving the vibrating diaphragm system to vibrate, wherein the shell divides the inner cavity into a front cavity and a rear cavity by taking the vibrating diaphragm of the vibrating diaphragm system as a boundary, and the magnetic circuit system is arranged in the rear cavity. In wearable equipment or cell-phone, when the speaker monomer circular telegram was worked, because the rear chamber temperature rose of reason of generating heat, gaseous inflation leads to the increase of rear chamber indoor pressure to oppress the free vibrating system of speaker and move to the front chamber, make the free sound of speaker diminish or noiseless, and prior art's speaker, waterproof grade generally is within 10 meters of depth, within 10 meters under water, can normally work, but at the depth that exceeds 10 meters under water, speaker waterproof performance is poor, can not satisfy the waterproof grade requirement of 20, 30, 50 meters and great depth.

Therefore, it is necessary to provide a new speaker to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a speaker of the atmospheric pressure of back chamber and the front chamber that can balance the speaker.

The technical scheme of the utility model as follows:

a loudspeaker comprises a first shell, a loudspeaker single body and a waterproof breathable film, wherein the first shell is provided with a first inner cavity and a first opening communicated with the first inner cavity, the loudspeaker single body is arranged in the first inner cavity and comprises a second shell, a magnetic circuit system and a vibration system, the second housing has a second inner cavity and a second opening communicating with the second inner cavity, the vibration system includes a diaphragm for dividing the second inner cavity into a front chamber and a rear chamber, the magnetic circuit system is arranged in the rear cavity, the rear cavity is communicated with the first inner cavity, the second opening is communicated with the first opening, the second shell is provided with at least one first through hole which is communicated with the first inner cavity and the front cavity, and the waterproof breathable film is arranged on the second shell and covers the first through hole.

As an improved mode, the loudspeaker further comprises an annular support, the second casing comprises a bottom shell and a top cover connected with the bottom shell, the top cover is provided with the second opening, the top cover and the vibrating diaphragm are enclosed to form the front cavity, the top cover comprises a top plate and a side plate arranged on the top plate, the first through hole is formed in the side plate, the annular support is arranged on the outer side or the inner side of the side plate, the annular support is provided with a second through hole correspondingly arranged with the first through hole, and the waterproof breathable film is clamped between the top cover and the annular support.

As an improvement, the annular support is annularly arranged on the outer side of the side plate, a first groove is arranged on the outer side wall of the side plate facing the front cavity, the first groove is provided with a first bottom groove surface facing the annular support, the first through hole penetrates through the side plate from the first bottom groove surface, and the waterproof breathable film is embedded in the first groove.

As an improvement mode, the bottom shell comprises a surrounding wall, the surrounding wall is provided with a matching surface matched with the top cover, a plurality of buckling pieces are convexly arranged on the matching surface, each buckling piece is provided with a clamping groove, and the annular support is installed on the surrounding wall through the clamping grooves in a buckling mode.

As an improvement mode, the enclosure wall is the rectangular shape of taking the fillet, buckle spare is equipped with four, four buckle spare is located four corners of enclosure wall, every buckle spare is including protruding locating the connecting portion of fitting surface and certainly connecting portion keep away from the one end orientation of fitting surface the extension that the second opening direction extends, the extension connecting portion and the fitting surface encloses to close and forms the draw-in groove, the ring carrier is the rectangular shape, four corners of ring carrier are from keeping away from one side orientation of fitting surface the fitting surface is concave to be established and is formed the first breach of dodging, the extension card is located in the first breach of dodging.

As an improvement mode, the top cap is the rectangle, four corners of top cap are from keeping away from one side orientation of fitting surface the fitting surface is concave to be established and is formed the second and dodge the breach, the extension card is located in the second dodges the breach, the ring carrier clamp is located the top cap with between the connecting portion.

As an improvement, the speaker still includes inhales the sound spare, the drain pan is equipped with the intercommunication first inner chamber with the third through-hole of back cavity, inhale the sound spare with the drain pan is connected and is covered the third through-hole, it is equipped with the intercommunication to inhale the sound spare first inner chamber with the filtration hole of third through-hole.

As an improvement mode, the bottom shell further comprises a magnetic bowl, the top cover is connected with the top of the enclosing wall, the magnetic bowl is connected with the bottom of the enclosing wall, the magnetic bowl and the vibrating diaphragm are enclosed to form the rear cavity, and the magnetic bowl is provided with the third through hole.

As an improvement mode, the bottom surface of the magnetic bowl far away from the rear cavity is provided with a second groove towards the rear cavity, and the sound absorbing piece is arranged in the second groove.

As a modification, the waterproof breathable film is a polytetrafluoroethylene porous film.

Compared with the prior art, the loudspeaker provided by the utility model is provided with the first through hole on the second shell of the loudspeaker monomer, and the front cavity is communicated with the first inner cavity through the first through hole, so that the front cavity is communicated with the rear cavity, the air pressure of the rear cavity and the front cavity of the loudspeaker can be balanced, the loudspeaker is not influenced by the pressure of the rear cavity, and the loudspeaker can keep normal work; meanwhile, the waterproof breathable film is used for covering the first through hole, so that liquid in the front chamber can be prevented from entering the rear chamber, the air tightness of the rear chamber is not affected, the waterproof and breathable problems are perfectly solved, and the waterproof grade requirements of 20, 30 and 50 meters and greater depths can be met.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a speaker according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of section B-B of FIG. 1;

fig. 4 is an exploded view of the speaker of the present invention;

fig. 5 is an enlarged view of C of fig. 4.

Fig. 6 is a schematic structural view of the top cover of the present invention;

fig. 7 is a schematic structural view of the ring-shaped support of the present invention;

fig. 8 is a schematic structural view of the magnetic bowl of the present invention;

fig. 9 is a schematic structural view of the sound absorbing member of the present invention.

[ detailed description ] embodiments

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

It should be noted that all directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), 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. 1-9, a speaker 100 according to an embodiment of the present invention includes a first housing 10, a speaker unit 20, a waterproof breathable film 30, and a ring-shaped support 40, wherein,

the first shell 10 comprises a front cover 11 and a rear cover 12, the front cover 11 and the rear cover 12 enclose a first inner cavity 13, a first opening 14 is formed in the front cover 11, two L-shaped positioning protrusions 15 are convexly arranged on one side, facing the rear cover 12, of the front cover 11, the two positioning protrusions 15 are symmetrically arranged on two sides of the first opening 14 by taking the first opening 14 as a center, and the loudspeaker single body 20 is arranged in the first inner cavity 13 and is arranged between the two positioning protrusions 15.

The speaker unit 20 includes a second housing 21, a magnetic circuit system 22 and a vibration system 23, the vibration system 23 is configured to vibrate and generate sound, the magnetic circuit system 22 is configured to drive the vibration system 23 to vibrate and generate sound, the second housing 21 has a second inner cavity 211 and a second opening 212 communicating with the second inner cavity 211, the vibration system 23 includes a diaphragm 231 configured to divide the second inner cavity 211 into a front cavity 213 and a rear cavity 214, the magnetic circuit system 22 is disposed in the rear cavity 214, the rear cavity 214 is communicated with the first inner cavity 13, the second opening 212 is communicated with the first opening 14, the second housing 21 is provided with at least one first through hole 52 communicating with the first inner cavity 13 and the front cavity 213, and the waterproof breathable film 30 is mounted on the second housing 21 and covers the first through hole 52. In this design, when the speaker 100 is powered on to operate, the gas expanded by the heat generated by the components in the rear chamber 214 can diffuse from the rear chamber 214 into the first inner chamber 13 and diffuse from the first inner chamber 13 to the front chamber 213 through the first through hole 52, balancing the gas pressure in the rear chamber 214, so that the diaphragm 231 is not pressed to move towards the front chamber 213 due to the thermal expansion of the gas in the rear chamber 214, the sound of the speaker 100 is reduced or silenced, and the normal operation of the speaker 100 is maintained; and cover first through-hole 52 through setting up waterproof ventilated membrane 30, waterproof ventilated membrane 30 can prevent that outside moisture from entering into first inner chamber 13 through first through-hole 52 to play waterproof effect to the first inner chamber 13 of speaker, satisfy the waterproof grade requirement of 20, 30, 50 meters and more degree of depth.

As a modification of this embodiment, the second housing 21 includes a bottom shell 215 and a top cover 216 connected to the bottom shell 215, the second opening 212 is disposed on the top cover 216, the top cover 216 is disposed around the edge of the first opening 14, and preferably, the top cover 216 and the plate body of the front cover 11 with the first opening 14 are fixed by gluing. The top cover 216 and the diaphragm 231 enclose to form a front chamber 213, the top cover 216 includes a top plate 217 and four side plates 218 enclosing the top plate 217, the number of the side plates 218 is four, first through holes 52 are arranged on one of the side plates 218, two of the side plates 218, three of the side plates 218, or four of the side plates 218, and the number of the first through holes 52 is designed according to actual requirements. Of course, the top cover 216 is not limited to four side plates 218, for example, the top cover 216 may only have one circular side plate, as long as the side plate is provided with the first through hole 52 to balance the air pressure of the rear chamber 214.

The annular support 40 is arranged at the outer side of the side plate 218 in an annular mode, the annular support 40 is provided with a second through hole 41 which is arranged corresponding to the first through hole 52, the waterproof breathable film 30 is clamped between the side plate 218 and the annular support 40, and when the waterproof breathable film 30 bears large pressure, the waterproof breathable film 30 cannot be separated from the side plate 218 to cause waterproof failure. It should be understood that the ring-shaped support 40 is not limited to be disposed around the outer side wall of the side plate 218, and the ring-shaped support 40 may be disposed around the inner side wall of the side plate 218, as long as the waterproof breathable membrane 30 is sandwiched between the ring-shaped support 40 and the side plate 218, and when a large pressure is applied, the waterproof breathable membrane 30 will not be separated from the side plate 218.

As an improvement of this embodiment, the outer side wall of the side plate 218 is provided with a first groove 201 facing the front chamber 213, the first groove 201 has a first bottom groove surface 202 facing the ring support 40, the first through hole 52 penetrates the side plate 218 from the first bottom groove surface 202, the waterproof breathable film 30 is embedded in the first groove 201, and the first groove 201 is used for accommodating the waterproof breathable film 30, so that the waterproof breathable film 30 can be fixed, the side plate 218 can be reasonably utilized, the structure of the speaker 100 is more compact, and the size of the speaker 100 cannot be enlarged.

As a modified mode of this embodiment, the bottom case 215 includes a surrounding wall 203 and a magnetic bowl 204 connected to the bottom of the surrounding wall 203, the magnetic bowl 204 and the diaphragm 231 surround to form a rear chamber 214, the surrounding wall 203 is in a rectangular shape with rounded corners, the surrounding wall 203 has a mating surface 205 matched with the top cover 216, the mating surface 205 is convexly provided with four fasteners 206, the four fasteners 206 are located at four corners of the surrounding wall 203, each fastener 206 includes a connecting portion 207 convexly provided on the mating surface 205 and an extending portion 208 extending from one end of the connecting portion 207 away from the mating surface 205 toward the second opening 212, and the extending portion 208, the connecting portion 207 and the mating surface 205 surround to form a locking groove 209.

As an improved mode of this implementation, the ring-shaped support 40 is rectangular, four corners of the ring-shaped support 40 are recessed from one side far away from the fitting surface 205 toward the fitting surface 205 to form a first avoidance notch 42, the extension portion 208 is clamped in the first avoidance notch 42, so that the four corners of the ring-shaped support 40 are located in the clamping groove 209, and the ring-shaped support 40 is clamped between the top cover 216 and the connection portion 207, the fixing mode is simple and effective, and by setting the first avoidance notch 42, the connection portion 207 can be protruded by a short distance to clamp the ring-shaped support 40 by the extension portion 208, thereby reducing the size of the speaker 100.

As an improvement of this embodiment, the top cover 216 is disposed on one side of the front cover 11 facing the rear cover 12 and fixed on the front cover 11, the top cover 216 is rectangular, four corners of the top cover 216 are recessed from one side away from the fitting surface 205 toward the fitting surface 205 to form a second avoidance notch 219, the extension portion 208 is clamped in the second avoidance notch 219, so that the four corners of the top cover 216 are located in the clamping groove 209, and the ring bracket 40 is clamped between the top cover 216 and the connecting portion 207.

As an improvement of this embodiment, the magnetic bowl 204 is provided with a third through hole 24 communicating the first inner cavity 13 and the rear cavity 214, the speaker 100 further includes a sound absorbing member 50, a second groove 25 is provided toward the main magnetic steel 221 on one side of the magnetic bowl 204 close to the rear cover 12, the second groove 25 has a second bottom groove surface 251 facing the rear cover 12, the third through hole 24 penetrates the second bottom groove surface 251 from the second bottom groove surface 251, the sound absorbing member 50 is embedded in the second groove 25 to play a role of sound absorption and dust prevention, and the sound absorbing member 50 is provided with a filter hole 51 communicating the first inner cavity 13 and the third through hole 24.

Specifically, the magnetic circuit system 22 includes a main magnet 221 disposed in the middle of the magnetic bowl 204, two auxiliary magnets 222 disposed on two sides of the main magnet 221, and a main pole core 223 attached to one side of the main magnet 221 away from the magnetic bowl 204, wherein the main magnet 221 and the auxiliary magnets 222 are disposed at an interval.

Specifically, the vibration system 23 further includes a voice coil 232 and an annular ball tip 233, the voice coil 232 is movably sleeved on the main pole 223, and the annular ball tip 233 is disposed on a side of the diaphragm 231 facing the second opening 212.

Preferably, the waterproof breathable membrane 30 is a polytetrafluoroethylene porous membrane with excellent air tightness and water tightness, and the waterproof breathable membrane 30 is embedded in the first groove 201, so that the loudspeaker 100 can meet the waterproof and normal acoustic functions.

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 are all within the scope of the present invention.

Claims

1. A loudspeaker is characterized by comprising a first shell, a loudspeaker single body and a waterproof breathable film, the first shell is provided with a first inner cavity and a first opening communicated with the first inner cavity, the loudspeaker single body is arranged in the first inner cavity, the loudspeaker monomer comprises a second shell, a magnetic circuit system and a vibration system, the second shell is provided with a second inner cavity and a second opening communicated with the second inner cavity, the vibration system comprises a diaphragm for dividing the second inner cavity into a front chamber and a rear chamber, the magnetic circuit system is arranged in the rear cavity, the rear cavity is communicated with the first inner cavity, the second opening is communicated with the first opening, the second shell is provided with at least one first through hole which is communicated with the first inner cavity and the front cavity, and the waterproof breathable film is arranged on the second shell and covers the first through hole.

2. The loudspeaker of claim 1, wherein: the loudspeaker further comprises an annular support, the second shell comprises a bottom shell and a top cover connected with the bottom shell, the top cover is provided with the second opening, the top cover and the vibrating diaphragm are enclosed to form the front cavity, the top cover comprises a top plate and side plates arranged on the top plate, the first through holes are arranged in the side plates, the annular support is arranged on the outer side or the inner side of the side plates, the annular support is provided with second through holes correspondingly arranged with the first through holes, and the waterproof breathable film is clamped between the top cover and the annular support.

3. The loudspeaker of claim 2, wherein: the ring carrier ring is located the outside of curb plate, the lateral wall orientation of curb plate the preceding cavity is equipped with first recess, first recess has the orientation the first kerve face of ring carrier, first through-hole is followed first kerve face runs through the curb plate, waterproof ventilated membrane inlays to be located in the first recess.

4. The loudspeaker of claim 2, wherein: the bottom shell comprises a surrounding wall, the surrounding wall is provided with a matching surface matched with the top cover, a plurality of buckling pieces are convexly arranged on the matching surface, each buckling piece is provided with a clamping groove, and the annular support is installed on the surrounding wall through the clamping grooves in a buckling mode.

5. The loudspeaker of claim 4, wherein: the wall is the rectangular shape of taking the fillet, buckle spare is equipped with four, four buckle spare is located four corners of wall, every buckle spare is including protruding locating the connecting portion of fitting surface and certainly connecting portion keep away from the one end orientation of fitting surface the extension that the second opening direction extends, the extension connecting portion and the fitting surface encloses to close and forms the draw-in groove, ring carrier is the rectangular shape, four corners of ring carrier are from keeping away from one side orientation of fitting surface the fitting surface is concave to be established and is formed the first breach of dodging, the extension card is located in the first breach of dodging.

6. The loudspeaker of claim 5, wherein: the top cap is the rectangle, four corners of top cap are from keeping away from one side orientation of fitting surface the fitting surface is concave to be established and is formed the second and dodge the breach, the extension card is located in the second dodges the breach, the ring carrier clamp is located the top cap with between the connecting portion.

7. The loudspeaker of claim 4, wherein: the speaker is still including inhaling the sound piece, the drain pan is equipped with the intercommunication first inner chamber with the third through-hole of back cavity, inhale the sound piece with the drain pan is connected and is covered the third through-hole, it is equipped with the intercommunication to inhale the sound piece first inner chamber with the filtration pore of crossing of third through-hole.

8. The loudspeaker of claim 7, wherein: the bottom shell further comprises a magnetic bowl, the top cover is connected with the top of the enclosing wall, the magnetic bowl is connected with the bottom of the enclosing wall, the magnetic bowl and the vibrating diaphragm are enclosed to form the rear cavity, and the magnetic bowl is provided with the third through hole.

9. The loudspeaker of claim 8, wherein: the magnetic bowl is far away from the bottom surface of the rear cavity faces the rear cavity and is provided with a second groove, and the sound absorbing piece is arranged in the second groove.

10. A loudspeaker according to any one of claims 1 to 9, wherein: the waterproof breathable film is a polytetrafluoroethylene porous film.