CN210641057U - Loudspeaker - Google Patents

Abstract

The utility model provides a loudspeaker, which comprises a first shell, a loudspeaker monomer and a waterproof ventilated membrane, wherein the first shell is provided with a first inner cavity, and the loudspeaker monomer is arranged in the first inner cavity; the loudspeaker monomer comprises a second shell and a vibrating diaphragm system, the second shell is provided with a second inner cavity, and the vibrating diaphragm system comprises a vibrating diaphragm which divides the second inner cavity into a front cavity and a rear cavity; the second shell includes drain pan and the top cap of being connected with the drain pan, and the vibrating diaphragm is fixed in between drain pan and the top cap and encloses with the top cap and close the preceding cavity that forms, and the terminal surface of top cap orientation drain pan is equipped with the heavy groove of keeping away from the drain pan direction concave with preceding cavity intercommunication, and the terminal surface that drain pan and top cap are fixed is equipped with to keeping away from the top cap direction concave and dodges the groove, and heavy groove is through dodging groove and back chamber intercommunication, and the overlapping part in waterproof ventilated membrane closing cap heavy groove and dodge the groove. The utility model discloses a speaker has and makes the speaker have the atmospheric pressure that can balance between back cavity and the preceding cavity and realize the advantage of water-proof through setting up waterproof ventilated membrane through setting up heavy groove.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to a speaker field.

[ 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 internal pressure increase of rear chamber to oppression speaker monomer's vibration system moves to the front chamber, makes speaker monomer sound 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 meters, 30 meters, 50 meters and the 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 can balance the atmospheric pressure between back cavity and the preceding cavity and have waterproof function's speaker.

The technical scheme of the utility model as follows:

the 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, and the loudspeaker single body is arranged in the first inner cavity; the loudspeaker monomer comprises a second shell and a diaphragm system, the second shell is provided with a second inner cavity, the diaphragm system comprises a diaphragm which divides the second inner cavity into a front cavity and a rear cavity, and the rear cavity is communicated with the first inner cavity to form a rear cavity; the second shell includes the drain pan and with the top cap that the drain pan is connected, the vibrating diaphragm be fixed in the drain pan with between the top cap and with the top cap encloses to close and forms preceding cavity, the top cap is equipped with the intercommunication first opening with the second opening of preceding cavity, the top cap orientation the terminal surface of drain pan is to keeping away from the concave heavy groove that is equipped with preceding cavity intercommunication, the drain pan with the fixed terminal surface of top cap is to keeping away from the concave groove of dodging that is equipped with of top cap direction, heavy groove part is folded and is located dodge the groove and make the heavy groove pass through dodge the groove with back cavity intercommunication, waterproof ventilated membrane clamp is located between the top cap with between the drain pan and the closing cover the heavy groove with dodge the overlapping portion in groove.

Further, the projection of the vibrating diaphragm along the vibration direction overlaps with the projection of the waterproof breathable film along the vibration direction, and the waterproof breathable film is clamped and fixed between the vibrating diaphragm and the top cover.

Further, the number of the sinking grooves is at least two.

Further, at least two heavy groove edge the marginal interval distribution of top cover, dodge the groove with waterproof ventilated membrane all corresponds heavy groove sets up.

Furthermore, the heavy groove comprises a first groove part and a second groove part, the second groove part is strip-shaped, one end of the second groove part is communicated with the first groove part, the other end of the second groove part is communicated with the front cavity, and the width of the first groove part is larger than that of the second groove part.

Further, the bottom shell further comprises a peripheral wall, the peripheral wall is provided with a matching surface matched with the top cover, the matching surface is convexly provided with a plurality of buckling pieces, each buckling piece is provided with a clamping groove, and the top cover is installed on the bottom shell through being buckled with the clamping groove.

Further, the perisporium is the rectangle shape of taking the fillet, buckle spare is equipped with threely, and is three buckle spare is located the three corner of perisporium, every buckle spare is including protruding locating the connecting portion of fitting surface and certainly the one end orientation that the fitting surface was kept away from to connecting portion the extension that the second opening extends, the extension connecting portion and the fitting surface encloses to close and forms the draw-in groove, the top cap is the rectangle, the three corner of top cap is from keeping away from one side orientation of fitting surface the notched breach of dodging that forms of fitting surface, the extension card is located in dodging the breach.

Further, the speaker is still including inhaling 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 pore of crossing of third through-hole.

Further, the bottom shell further comprises a magnetic bowl, the top cover is connected with the top of the peripheral wall, the magnetic bowl is connected with the bottom of the peripheral 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.

Further, the waterproof breathable film is a polytetrafluoroethylene porous film.

The beneficial effects of the utility model reside in that: the heavy groove can balance the atmospheric pressure between first inner chamber and the preceding cavity, when avoiding the increase of back cavity internal pressure, oppression vibrating diaphragm moves to the preceding cavity, makes speaker sound diminish or noiseless, and waterproof ventilated membrane covers heavy groove, and the air feed body circulates between preceding cavity and the first inner chamber, and avoids water to flow into first inner chamber from preceding cavity, plays waterproof effect, can satisfy the waterproof grade requirement of 20 meters, 30 meters, 50 meters and more degree of depth.

[ description of the drawings ]

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

FIG. 2 is an exploded view of the speaker of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a top cover in a speaker according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

fig. 6 is a schematic structural view of a top cover and a waterproof breathable film in a speaker according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

fig. 8 is a schematic structural diagram of a speaker unit in a speaker according to an embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 9 at D;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 12 is an enlarged view of a portion of FIG. 11 at E;

FIG. 13 is an enlarged view of a portion of FIG. 11 at F;

FIG. 14 is an enlarged view of a portion of FIG. 2 at G;

fig. 15 is a schematic structural diagram of another angle of the speaker unit in the speaker according to the embodiment of the present invention.

In the figure: 100. a speaker; 1. a first housing; 101. a first lumen; 102. a first opening; 2. a speaker unit; 21. a second housing; 201. a second lumen; 221. vibrating diaphragm; 202. a front chamber; 203. a rear chamber; 23. a magnetic circuit system; 211. a bottom case; 212. a top cover; 204. a second opening; 205. sinking a groove; 3. a waterproof breathable film; 206. an avoidance groove; 207. a first groove portion; 208. a second groove portion; 213. a peripheral wall; 209. a mating surface; 214. a fastener; 210. a card slot; 215. a connecting portion; 216. an extension portion; 217. avoiding the notch; 218. a third through hole; 219. a sound absorbing member; 220. a groove; 24. a magnetic bowl.

[ detailed description ] embodiments

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

The invention provides a loudspeaker 100, please refer to fig. 1, 2, 4, 5, 8-11, the loudspeaker 100 includes a first casing 1, a loudspeaker single body 2 and a waterproof breathable film 3, the first casing 1 has a first inner cavity 101, the first casing 1 is provided with a first opening 102 communicating with the first inner cavity 101, the loudspeaker single body 2 is disposed in the first inner cavity 101, the loudspeaker single body 2 includes a second casing 21, the second casing 21 has a second inner cavity 201, the loudspeaker single body 2 further includes a diaphragm assembly disposed in the second inner cavity 201, the diaphragm assembly (not labeled in the figure) includes a diaphragm 221 dividing the second inner cavity 201 into a front cavity 202 and a rear cavity 203, the loudspeaker single body 2 further includes a magnetic circuit assembly 23 disposed in the rear cavity 203, the rear cavity 203 communicates with the first inner cavity 101 to form a rear cavity, the front cavity 202 communicates with the first opening 102, the second casing 21 includes a bottom shell 211 and a top cover 212 connected with the bottom shell 211, the vibrating diaphragm 221 is fixed between the bottom cover 211 and the top cover 212 and forms a front chamber 202 by enclosing with the top cover 212, the top cover 212 is provided with a second opening 204 communicating the front chamber 202 and the first opening 102, the end surface of the top cover 212 facing the bottom cover 211 is concavely provided with a sinking groove 205 communicating the first inner chamber 101 and the front chamber 202, the fixed end surface of the bottom cover 211 and the top cover 212 is concavely provided with a avoiding groove 206 facing away from the top cover 212, the sinking groove 205 is partially overlapped on the avoiding groove 206, so that the sinking groove 205 is communicated with the rear chamber through the avoiding groove 206, when the loudspeaker is powered on for work, expanded gas caused by heating of components in the rear chamber 203 can be diffused into the first inner chamber 101 from the rear chamber 203 and diffused into the front chamber 202 from the first inner chamber 101 through the sinking groove 205, the air pressure of the rear chamber 203 is balanced, and therefore the vibrating diaphragm 221 cannot be pressed to move towards the front chamber 202 by the gas in the rear chamber 203, so that the sound of the loudspeaker becomes small or silent and the normal work of the loudspeaker is kept.

As a modified form of this embodiment, the speaker 100 further includes a waterproof breathable membrane 3 interposed between the top cover 212 and the bottom cover 211, the waterproof breathable membrane 3 covers the sink 205, so that air can circulate between the front chamber 202 and the first inner cavity 101, and water is prevented from flowing into the first inner cavity 101 from the front chamber 202, thereby playing a waterproof role.

Preferably, the waterproof breathable film 3 is clamped and fixed between the vibrating film 221 and the top cover 212, and in the vibrating direction of the vibrating film 221, the vibrating film 221 partially overlaps with the waterproof breathable film 3, and as the sinking groove 205 partially overlaps with the vibrating film 221, the waterproof breathable film 3 partially overlaps with the vibrating film 221, so that the edge of the sinking groove 205 corresponding to the vibrating film 221 can be covered by the waterproof breathable film 3, and the waterproof effect of the waterproof breathable film 3 is further ensured.

It is understood that the number of the sinking grooves 205 may be at least two, and the sinking grooves 205 are distributed at intervals along the edge of the top cover 212 of at least two sinking grooves 205, and the avoiding groove 206 and the waterproof breathable film 3 are respectively disposed corresponding to the sinking grooves 205, that is, one sinking groove 205 corresponds to one avoiding groove 206 and one waterproof breathable film 3.

In other embodiments, at least two sinking grooves 205 can correspond to an avoiding groove 206 and a waterproof and breathable film 3, so that the arrangement of the avoiding groove 206 and the waterproof and breathable film 3 can be simplified.

Referring to fig. 6 and 7, the waterproof breathable film 3 is preferably a polytetrafluoroethylene porous film, but the waterproof breathable film 3 may be other film materials having both waterproof and breathable properties. Specifically, the waterproof and breathable film 3 can be mounted on the top cover 212 by injection molding, hot pressing, fitting, or other methods.

Preferably, the outer edge of the top cover 212 is protruded compared to the outer edge of the diaphragm 221, and it is understood that the diaphragm 221 covers the portion of the sink 205 exposed to the first inner cavity 101 to achieve a waterproof effect.

Preferably, the sinking groove 205 comprises a first groove 207 and a second groove 208, the first groove 207 is exposed to the first inner cavity, the second groove 208 is strip-shaped and communicates the first groove 207 and the front cavity 202, the dimension of the first groove 207 along the width direction of the second groove 208 is larger than the width of the second groove 208, and it can be understood that the waterproof breathable film 3 covers the first groove 207 and the joint of the first groove 207 and the second groove 208 to achieve the waterproof function.

Preferably, the bottom case 211 includes a peripheral wall 213, the peripheral wall 213 has a matching surface 209 facing the top cover 212, the bottom case 211 is provided with a plurality of locking members 214 protruding from the matching surface 209 to the top cover 212, the locking members 214 are formed with locking slots 210, and the locking members 214 lock the top cover 212 to the bottom case 211 through the locking slots 210.

Preferably, the speaker unit 2 is rectangular as a whole, the peripheral wall 213 and the top cover 212 are both formed as a rectangular frame, three fasteners 214 are provided and are respectively provided at three corners of the peripheral wall 213, each fastener 214 includes a connecting portion 215 extending from the mating surface 209 and an extending portion 216 extending from an end of the connecting portion 215 far away from the mating surface 209 toward the second opening 204, the extending portion 216, the connecting portion 215 and the mating surface 209 enclose to form a fastening groove 210, a side surface of the top cover 212 far away from the peripheral wall 213 is recessed toward the peripheral wall 213 to form an avoiding notch 217, and the extending portion 216 is fastened in the avoiding notch 217. The positioning effect of the fastener 214 is better, and the sinking groove 205 is disposed at the corner of the top cover 212 that is not fastened by the fastener 214. By arranging the avoiding notch 217, the connection part 215 can be protruded for a short distance, so that the extension part 216 can be clamped on the annular bracket 40, and the effect of reducing the size of the loudspeaker is achieved.

Preferably, the bottom case 211 is provided with a third through hole 218 communicating the first inner cavity 101 and the rear cavity 203, the speaker 100 further includes a sound absorbing member 219 connected to the bottom case 211 and covering the third through hole 218, the sound absorbing member 219 is provided with a filter hole, and the filter hole communicates the first inner cavity 101 and the rear cavity 203.

Preferably, the speaker unit 2 further includes a magnetic bowl 24, the magnetic bowl 24 is formed as a bottom of the speaker unit 2 and connected to a bottom of the peripheral wall 213, it can be understood that the magnetic bowl 24, the peripheral wall 213 and the diaphragm 221 enclose to form the rear chamber 203, and the third through hole 218 is opened on the magnetic bowl 24.

Preferably, referring to fig. 15, the bottom surface of the magnetic bowl 24 facing away from the rear cavity 203 is recessed to form a groove 220, the groove 220 surrounds the third through hole 218, and the sound absorbing member 219 is embedded in the groove 220.

To sum up, the utility model discloses set up first one or more heavy groove 205 on the cemented surface of top cap 212, and cover the cemented surface with waterproof ventilated membrane 3 installation, make heavy groove 205 can play the effect of balanced back cavity 203 atmospheric pressure, when avoiding back cavity 203 internal pressure increase, oppression vibrating diaphragm 221 moves to preceding cavity 202, make 100 sound of speaker diminish or noiseless, speaker 100 still includes the waterproof ventilated membrane 3 of pressing from both sides between locating top cap 212 and drain pan 211, waterproof ventilated membrane 3 covers heavy groove 205, circulate between cavity 202 and first inner chamber 101 in the front for the gas supply, and avoid water to flow into first inner chamber 101 from preceding cavity 202, play waterproof effect, can satisfy 20 meters, 30 meters, 50 meters and the waterproof grade requirement of the great degree of depth.

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 (10)

1. A loudspeaker is characterized by comprising 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, and the loudspeaker single body is arranged in the first inner cavity; the loudspeaker monomer comprises a second shell and a diaphragm system, the second shell is provided with a second inner cavity, the diaphragm system comprises a diaphragm which divides the second inner cavity into a front cavity and a rear cavity, and the rear cavity is communicated with the first inner cavity to form a rear cavity; the second shell includes the drain pan and with the top cap that the drain pan is connected, the vibrating diaphragm be fixed in the drain pan with between the top cap and with the top cap encloses to close and forms preceding cavity, the top cap is equipped with the intercommunication first opening with the second opening of preceding cavity, the top cap orientation the terminal surface of drain pan is to keeping away from the concave heavy groove that is equipped with preceding cavity intercommunication, the drain pan with the fixed terminal surface of top cap is to keeping away from the concave groove of dodging that is equipped with of top cap direction, heavy groove part is folded and is located dodge the groove and make the heavy groove pass through dodge the groove with back cavity intercommunication, waterproof ventilated membrane clamp is located between the top cap with between the drain pan and the closing cover the heavy groove with dodge the overlapping portion in groove.

2. The loudspeaker of claim 1, wherein: the projection of vibrating diaphragm edge vibration direction with the projection part overlap of waterproof ventilated membrane edge vibration direction, waterproof ventilated membrane clamp establish be fixed in the vibrating diaphragm with between the top cap.

3. The loudspeaker of claim 1, wherein: the number of the sinking grooves is at least two.

4. A loudspeaker according to claim 3, wherein: at least two sink groove edge the marginal interval distribution of top cover, dodge the groove with waterproof ventilated membrane all corresponds sink groove sets up.

5. The loudspeaker of claim 1, wherein: the heavy groove comprises a first groove part and a second groove part, the second groove part is strip-shaped, one end of the second groove part is communicated with the first groove part, the other end of the second groove part is communicated with the front cavity, and the width of the first groove part is larger than that of the second groove part.

6. The loudspeaker of claim 1, wherein: the bottom shell further comprises a peripheral wall, the peripheral wall is provided with a matching surface matched with the top cover, the matching surface is convexly provided with a plurality of buckling pieces, each buckling piece is provided with a clamping groove, and the top cover is installed on the bottom shell through being buckled with the clamping groove.

7. The loudspeaker of claim 6, wherein: the perisporium is the rectangular shape of taking the fillet, buckle spare is equipped with threely, and is three buckle spare is located the three corner of perisporium, every buckle spare is including protruding locating the connecting portion of fitting surface and certainly the one end orientation that the fitting surface was kept away from to connecting portion the extension that the second opening extends, the extension connecting portion and the fitting surface encloses to close and forms the draw-in groove, the top cap is the rectangle, the three corner of top cap is from keeping away from one side orientation of fitting surface the breach is dodged to the sunken formation of fitting surface, the extension card is located in dodging the breach.

8. The loudspeaker of claim 6, 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.

9. The loudspeaker of claim 8, wherein: the bottom shell further comprises a magnetic bowl, the top cover is connected with the top of the peripheral wall, the magnetic bowl is connected with the bottom of the peripheral 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.

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

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