CN210093528U

CN210093528U - Loudspeaker box

Info

Publication number: CN210093528U
Application number: CN201921033442.0U
Authority: CN
Inventors: 李科; 印兆宇
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-30
Filing date: 2019-07-02
Publication date: 2020-02-18
Anticipated expiration: 2029-07-02
Also published as: WO2021000134A1

Abstract

The utility model provides a loudspeaker box, including upper cover, inferior valve and sound production monomer, the inferior valve includes steel sheet and inferior valve body, the sound production monomer is including being close to the sound production side of upper cover and with the dorsal part that the sound production side was carried on the back mutually, the steel sheet runs through and has seted up the through hole, the dorsal part warp the through hole is at least partially exposed to be located the steel sheet, the steel sheet is including encircleing the plane portion of through hole, the upper cover top wall, certainly the edge of roof is to being close to the lateral wall that the inferior valve direction is buckled and is extended and certainly the lateral wall to the barricade that extends in the accommodating space, plane portion keeps away from one side part of through hole bear in the barricade, plane portion with the cooperation of inferior valve body forms around the heavy groove of through. Compared with the prior art, the utility model discloses a loudspeaker box sound production monomer edge can reduce to 0.2mm with the interval of inferior valve body, has greatly reduced the whole volume of loudspeaker box.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

In recent years, science and technology have been rapidly developed, audio devices have been increasingly popularized, and among entertainment modes, high-quality music enjoyment has been gradually popularized in many people, so that speaker boxes for playing audio are widely applied to current smart mobile devices, and miniaturization of speaker boxes has become a mainstream demand in order to meet internal space arrangement of smart mobile devices.

In the related art, there is an assembly method for a speaker box in which a yoke leaks: the lower casing of the loudspeaker comprises a lower casing body and a steel sheet, wherein a through hole is formed in the steel sheet, a magnetic yoke of a sounding monomer penetrates through the through hole to be exposed outside the steel sheet, the steel sheet comprises a steel sheet body, a transition part and a groove sinking part, a flanging is arranged at the outer edge of the steel sheet body, the flanging and the lower casing are integrally molded through injection, and the groove sinking part is filled with glue to realize sealing. In the design, in order to meet the forming of the steel sheet, the distance between the edge of the sounding monomer and the lower shell needs to be kept above 1.4mm, and when the distance is less than 1.4mm, if the length of a straight line segment of the groove sinking part is reduced, the groove sinking characteristic of the steel sheet cannot be formed; if the length of the straight line section of the steel sheet body is reduced, the distance between the sinking groove part and the flanging is too short, so that the mold cannot be realized, and the development requirement of miniaturization of the loudspeaker box is not facilitated.

Therefore, there is a need to provide a new speaker box to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a simple structure, sound production monomer edge and the less speaker box of inferior valve body interval.

The utility model provides a loudspeaker box, which comprises an upper cover, a lower shell and a sound production monomer, wherein the upper cover is assembled to form a containing space, the sound production monomer is contained in the containing space, the lower shell comprises a steel sheet and a lower shell body, the steel sheet is arranged at the outer edge of the steel sheet in a surrounding way, the lower shell body is fixedly connected with the steel sheet, the lower shell body is fixed with the upper cover, the sound production monomer comprises a sound production side close to the upper cover and a back side opposite to the sound production side, the steel sheet is provided with a through hole in a penetrating way, the back side is at least partially exposed on the steel sheet through the through hole, the steel sheet comprises a plane part surrounding the through hole, the upper cover comprises a top wall, a side wall and a retaining wall, the top wall is oppositely arranged with the sound production side of the sound production monomer, the side wall, the plane portion is kept away from one side part of through hole bear in the barricade, plane portion with lower casing body cooperation forms around the heavy groove of through hole, fill sealed glue in the heavy groove.

Preferably, the inferior valve body corresponds the breach has been seted up to the barricade position of dodging, the lateral wall includes certainly the barricade is kept away from one side of sound production monomer is towards keeping away from the extension wall that the direction of roof extends, it keeps away from to extend the wall the one end of roof extends to the breach is passed through the breach exposes, it compares to extend the wall the barricade highly is greater than plane portion's thickness, extend the wall with plane portion butt and cooperation form with the seal groove of heavy groove intercommunication, sealed glue further fill extremely in the seal groove.

Preferably, plane portion keeps away from the edge of through hole includes first side and second side, the second side with first side end to end encloses into the ring-type, first side bear in the barricade, the steel sheet still includes certainly the second side is towards keeping away from the direction of upper cover is buckled the transition portion that extends and is connected the transition portion with steel sheet body between the inferior valve body.

Preferably, the minimum distance between the first side and the lower shell body is smaller than the minimum distance between the second side and the lower shell body.

Preferably, the both ends of second side are equipped with gluey hole, the both ends of barricade are equipped with sunken glue hiding groove, glue hiding groove with glue the hole intercommunication, just glue hiding groove with glue the hole one-to-one setting.

Preferably, the steel sheet body, the transition portion, and the planar portion are integrally formed.

Preferably, one side of the steel sheet body, which is far away from the transition part, is bent towards the direction close to the upper cover to form a flanging, and the flanging and the lower shell body are integrally injection-molded.

Preferably, the sound production side of the sound production unit is provided with a vibrating diaphragm for vibrating sound production, the back side of the sound production unit is provided with a magnetic yoke opposite to the vibrating diaphragm, and the magnetic yoke penetrates through the through hole and is exposed outside the steel sheet.

Preferably, the edge of the magnet yoke close to the steel sheet is at least partially sunken to form a yielding groove towards the direction of the upper cover, the yielding groove is communicated with the sinking groove, and the sealant extends into the yielding groove.

Preferably, the upper cover and the diaphragm are arranged at an interval to form a front sound cavity, and the upper cover, the lower shell and the sound generating monomer are matched together to form a rear cavity.

Preferably, the side wall is provided with a sound outlet communicated with the outside, the speaker box further comprises a sound guide channel communicated with the sound outlet and the front sound cavity, and the front sound cavity and the sound guide channel jointly form the front cavity of the speaker box and are used for conducting sound to the outside.

Compared with the prior art, the utility model provides a loudspeaker box, the through hole has been seted up in the steel sheet runs through. The steel sheet still including encircleing the plane portion of through hole, the upper cover includes the barricade, plane portion hold in on the barricade, plane portion with the cooperation of inferior valve body encloses into encircleing the heavy groove of through hole, sealed glue is filled in the heavy groove, has saved the structure of steel sheet body and transition portion among the correlation technique, makes the free edge of sound production with the interval of the lateral wall of upper cover can reduce, satisfies the development demand that the speaker box is microminiaturized.

[ 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 a schematic perspective view of a speaker box according to the present invention;

FIG. 2 is another angular schematic view of the loudspeaker enclosure of FIG. 1;

FIG. 3 is an exploded view of the speaker cabinet of FIG. 2;

FIG. 4 is an enlarged view of the area IV shown in FIG. 3;

FIG. 5 is a front view of the steel sheet shown in FIG. 3;

FIG. 6 is a cross-sectional view of the loudspeaker enclosure shown in FIG. 1 taken along line VI-VI;

FIG. 7 is a cross-sectional view of the loudspeaker enclosure shown in FIG. 1 taken along line VII-VII;

FIG. 8 is a cross-sectional view of the loudspeaker enclosure shown in FIG. 1 taken along line VIII-VIII;

fig. 9 is a schematic structural diagram of a speaker box according to another embodiment of the present invention.

[ 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.

Referring to fig. 1-5, the present invention provides a speaker box 100, which includes an upper cover 1, a lower shell 3 and a sound generating unit 5 having a diaphragm 53. The upper cover 1 and the lower shell 3 are matched to form an accommodating space, and the sounding unit 5 is accommodated in the accommodating space. The sound generating unit 5 and the vibrating diaphragm 53 are arranged at intervals to form a front sound cavity 10, and the sound generating unit 5, the upper cover 1 and the lower shell 3 are matched together to form a rear cavity 30.

The upper cover 1 includes a top wall 11 disposed opposite to the diaphragm 53 at an interval, a side wall 13 extending from the edge of the top wall 11 to the direction of the lower case 3, a supporting wall 15 extending from the middle area of the top wall 11 to the direction of the diaphragm 53 and carrying the sound generating unit 5, and a retaining wall 17 extending from the side wall 13 to the inside of the accommodating space.

The top wall 11, the lateral wall 13, the support wall 15 and the retaining wall 17 are integrally formed, the lateral wall 13 is provided with a sound outlet 130 communicated with the outside, the speaker 100 further comprises a sound guide channel 50 communicated with the sound outlet 130 and the front sound cavity 10, and the front sound cavity 10 and the sound guide channel 50 jointly form a front cavity 70 of the speaker box 100 and are used for transmitting sound to the outside.

In this embodiment, the retaining wall 17 is disposed on the short side of the side wall 13, and in other embodiments, the retaining wall 17 may also be disposed on the long side of the side wall 13. The two ends of the retaining wall 17 are recessed towards the lower casing 3 to form a glue storing groove 170, and the glue storing groove 170 is used for containing glue.

Inferior valve 3 with upper cover 1 is fixed, and is concrete, inferior valve 3 includes steel sheet 31 and ring locate the outward flange of steel sheet 31 and with inferior valve body 33 that steel sheet 31 is connected, inferior valve body 33 lid is located on lateral wall 13, can understand, inferior valve body 33 is ring structure, its shape with lateral wall 13's profile shape phase-match.

Further, the steel piece 31 has a through hole 310 formed therethrough. The steel piece 31 further comprises a plane portion 311 surrounding the through hole 310, and one side portion of the through hole, which is far away from the plane portion 311, is supported on the retaining wall 17.

The plane portion 311 and the lower shell body 33 are matched to form a sinking groove 313 surrounding the through hole 310, the sinking groove 313 is filled with sealant, and the sealant is used for sealing the rear cavity 30, so that the influence of air leakage of the rear cavity 30 on the acoustic performance of the loudspeaker box 100 is avoided.

The edge of the through hole 310 is kept away from by the plane portion 311, and includes a first side 3111 and a second side 3112, the first side 3111 is partially borne on the retaining wall 17, the second side 3112 and the first side 3111 are enclosed into a ring shape, the minimum distance between the first side 3111 and the lower casing 33 is less than the minimum distance between the second side 3112 and the lower casing 33.

First side 3111 both ends are equipped with gluey hole 3113, glue hole 3313 with hide and glue and hide 170 intercommunication, beat and glue the syringe needle and can pass glue hole 3113, it is right it hits to glue in the groove 170 to hide to glue, realize steel sheet 31 with barricade 17's is fixed, simultaneously, glue in hiding gluey groove 170 can also with sealed glue in the heavy groove 313 forms an organic whole structure, constitutes complete sealing ring jointly, has improved loudspeaker box 100's waterproof performance, simultaneously, sound production monomer 5 with steel sheet 31 connects firmly, is difficult for droing.

The steel sheet 31 further includes a transition portion 314 extending from the second side edge 3112 towards a direction away from the upper cover 1, and a steel sheet body 315 connected between the transition portion 314 and the lower shell body 33, wherein the steel sheet body 315, the transition portion 315 and the plane portion 311 are integrally formed.

One side of the steel sheet body 315, which is far away from the transition part 314, is bent towards the direction close to the upper cover 1 to form a flange 316, and the flange 316 and the lower shell body 33 are integrally formed by injection molding.

Inferior valve body 33 corresponds avoidance notch 330 has been seted up to barricade 17 position, lateral wall 13 includes certainly barricade 17 is kept away from one side of sound production monomer 5 is towards keeping away from the wall 131 that extends of roof direction catch of sight, it keeps away from to extend the wall 131 the one end of roof 11 extends to breach 330 and warp breach 330 exposes, it compares to extend wall 131 the barricade 17 highly be greater than plane portion 311's thickness, extend wall 131 with plane portion butt and cooperation form with the seal groove of heavy groove 313 intercommunication, sealed glue further fill extremely in the seal groove.

The sound production monomer 5 is including being close to sound production side 51 of upper cover 1 and with dorsal side 52 that sound production side 51 carried on the back mutually, sound production side 51 is equipped with the vibrating diaphragm 53 that is used for the vibration sound production, dorsal side 52 be equipped with the relative yoke 54 of vibrating diaphragm 53, yoke 54 passes through hole 310 exposes and locates outside the steel sheet 31, need not additionally occupy the space of back chamber 30, simultaneously because the intensity of steel sheet 31 is big, makes the thickness of steel sheet 31 can be done for a short time, has further increased the volume of back chamber 30 improves loudspeaker box 100's acoustic performance.

Furthermore, at least a part of the edge of the yoke 54 close to the steel sheet 31 is recessed towards the upper cover 1 to form a receding groove 540, the receding groove 540 is communicated with the sunken groove 313, and the sealant extends into the receding groove 540.

Referring to fig. 6 and 7, in order to ensure the formation of the structure of the sinking groove 313, the planar portion 311 needs to ensure a certain linear length; meanwhile, in consideration of the design of the steel sheet 31 forming die, the steel sheet body 315 also needs to ensure a certain linear length, so that the distance d1 between the edge of the sound generating unit 5 and the lower shell body 33 needs to satisfy d₁≥1.4mm。

Referring to fig. 6 and 8, the plane portion 311 is directly supported on the retaining wall 17, and the straight line portion of the steel sheet body 315 and the transition portion 315 are omitted, so that the distance d between the edge of the sound generating unit 5 and the lower case 33 is reduced₂Can reduce to 0.2mm, reduce the requirement to the installation distance greatly, make simultaneously the structure of steel sheet 31 is easily shaping to practice thrift the preparation material of steel sheet 31, reduced the cost.

It can be understood that, in the present embodiment, the retaining wall 17 is only disposed on the short side of the sidewall 13, and the plane portion 311 is also only partially supported on the retaining wall 17, please refer to fig. 9, in other manners, the retaining wall 17 can also be disposed on the long side of the sidewall 13, and the entire outer edge of the plane portion can be supported on the retaining wall 17, that is, the first side 3111 and the second side 3312 are supported on the retaining wall, and at this time, the distance between any position of the edge of the sound generating unit 5 and the lower case body 33 can be reduced to 0.2mm, so as to greatly reduce the overall volume of the speaker box 100.

Compared with the related art, in the speaker box 100 provided by the present invention, the steel sheet 31 penetrates through the through hole 310. Steel sheet 31 still includes encircleing the plane portion 311 of through hole 310, upper cover 1 includes barricade 17, plane portion 311 bear in on the barricade 17, plane portion with lower casing body 33 cooperation encloses into encircleing the heavy groove 313 of through hole 310, fill sealed glue in the heavy groove 313, saved the structure of steel sheet body 315 and transition portion 315 among the correlation technique, make the edge of sound production monomer 5 with the interval of upper cover 1's lateral wall 13 can reduce, satisfies the development demand that the speaker box microminiaturized.

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 an upper cover, a lower shell and a sound production monomer, wherein the lower shell is assembled with the upper cover to form an accommodating space, the sound production monomer is accommodated in the accommodating space, the lower shell comprises a steel sheet and a lower shell body, the steel sheet is arranged at the outer edge of the steel sheet in a surrounding mode, the lower shell body is fixedly connected with the steel sheet, the sound production monomer comprises a sound production side close to the upper cover and a back side back to the sound production side, a through hole is formed in the steel sheet in a penetrating mode, the back side is at least partially exposed in the steel sheet through the through hole, the steel sheet comprises a plane portion surrounding the through hole, the upper cover comprises a top wall, a side wall and a retaining wall, the top wall is arranged opposite to the sound production side of the sound production monomer, the side wall is bent and extended from the edge of the top wall to the, the plane portion is kept away from one side part of through hole bear in the barricade, plane portion with lower casing body cooperation forms around the heavy groove of through hole, fill sealed glue in the heavy groove.

2. The speaker box of claim 1, wherein the lower housing has an avoidance notch corresponding to the retaining wall, the sidewall includes an extension wall extending from a side of the retaining wall away from the sound generating unit toward a direction away from the top wall, an end of the extension wall away from the top wall extends to the notch and is exposed through the notch, the extension wall is higher than the retaining wall than the thickness of the planar portion, the extension wall abuts against the planar portion and is matched with the planar portion to form a sealing groove communicated with the sink groove, and the sealant is further filled into the sealing groove.

3. The speaker box according to claim 2, wherein the edge of the through hole away from the planar portion includes a first side and a second side, the second side and the first side are connected end to form a ring, the first side is supported by the retaining wall, the steel sheet further includes a transition portion extending from the second side in a bending manner in a direction away from the upper cover, and a steel sheet body connected between the transition portion and the lower shell body.

4. A loudspeaker enclosure according to claim 3, wherein the minimum distance between the first side and the lower housing is less than the minimum distance between the second side and the lower housing.

5. The speaker box as claimed in claim 3, wherein glue holes are provided at both ends of the second side edge, recessed glue hiding grooves are provided at both ends of the retaining wall, the glue hiding grooves communicate with the glue holes, and the glue hiding grooves and the glue holes are provided in one-to-one correspondence.

6. A loudspeaker enclosure according to claim 3, wherein the steel sheet body, the transition portion and the planar portion are integrally formed.

7. The loudspeaker box of claim 3, wherein the steel sheet body is bent to form a flange in a direction away from the transition part and towards the upper cover, and the flange and the lower shell body are integrally formed by injection molding.

8. The loudspeaker box of claim 1, wherein the sound-producing side of the sound-producing unit is provided with a diaphragm for vibrating sound production, and the back side of the sound-producing unit is provided with a magnetic yoke arranged opposite to the diaphragm, wherein the magnetic yoke is exposed out of the steel sheet through the through hole.

9. The speaker box as claimed in claim 8, wherein the edge of the yoke near the steel sheet is at least partially recessed toward the upper cover to form a relief groove, the relief groove is communicated with the recessed groove, and the sealant extends into the relief groove.

10. The loudspeaker box of claim 8, wherein the upper cover and the diaphragm are spaced apart to form a front acoustic cavity, and the upper cover, the lower shell and the sound generating unit cooperate together to define a rear cavity.

11. The speaker box according to claim 10, wherein the side wall is opened with a sound outlet communicating with the outside, the speaker box further comprises a sound guide channel communicating the sound outlet and the front sound cavity, and the front sound cavity and the sound guide channel jointly constitute the front cavity of the speaker box for transmitting sound to the outside.