CN211531241U - speaker box - Google Patents

Abstract

The utility model provides a loudspeaker box, which comprises a lower cover, an upper cover that forms a receiving space with the lower cover, a sound generating unit, a ventilation isolation component and a conductive terminal; the upper cover includes a support wall, and the sound generating unit and the ventilation isolation component are respectively supported It is fixed on the support wall and jointly divides the receiving space into a front cavity and a rear cavity. The sound-generating unit has an inner cavity and a leakage portion. The air-permeable isolation component includes a bracket and a ventilating spacer respectively surrounding the peripheral side of the sound-generating unit. The brackets are stacked. It is fixed on the support wall, one end of the ventilating spacer is fixed on the bracket, and the other end is fixed on the side of the sounding unit away from the upper cover; Between the spacers, the conductive terminals extend to the outside of the receiving space through the fracture and the rear cavity; the breathable isolation component completely covers the leakage part and encapsulates the sound-absorbing particles in the rear cavity. Compared with the related art, the speaker box of the utility model has high filling efficiency and excellent low-frequency acoustic performance.

Description

speaker box

【Technical field】

The utility model relates to the technical field of electro-acoustic conversion devices, in particular to a speaker box.

【Background technique】

With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. At present, the functions of mobile phones are extremely diverse, one of which is the high-quality music function. Therefore, speaker boxes for playing sound are widely used in today's smart mobile devices.

The speaker box of the related art includes an upper cover, a lower cover assembled with the upper cover to form a receiving space, a sounding unit and a ventilating spacer accommodated in the receiving space; the sounding unit and the upper cover A front cavity is enclosed, the sounding unit, the upper cover and the lower cover together form a rear cavity, a baffle wall is formed in the rear cavity, and the breathable spacer is attached to the baffle wall and is connected to the baffle wall. The baffle walls jointly divide the rear cavity into a first rear cavity and a second rear cavity which are in air communication with each other, and the sound producing unit is partially located in the first rear cavity.

However, in the speaker box of the related art, the sound-absorbing particles are encapsulated in the second rear cavity by the baffle wall and the ventilating spacer to form a DBASS space serving as a virtual sound cavity, but the rear cavity cannot be efficiently utilized due to the design limitation of the baffle wall structure , thereby limiting the low-frequency acoustic performance of the speaker enclosure.

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

【Content of utility model】

The purpose of the utility model is to provide a speaker box with high filling efficiency and good low-frequency acoustic performance.

In order to achieve the above-mentioned purpose, the present invention provides a speaker box, which comprises a lower cover, an upper cover that is covered on the lower cover and jointly encloses a receiving space, a sound-emitting unit received in the receiving space, a ventilation unit, and a ventilation unit. an isolation assembly and a conductive terminal; the upper cover includes an upper cover body covered on the lower cover and a support wall protruding from the upper cover body toward the lower cover, and the sounding unit is supported and fixed on the lower cover the support wall, the air-permeable isolation component is fixed to the support wall, and the air-permeable isolation component and the sound-generating unit together divide the accommodation space into a front cavity and a rear cavity, and the sound-generating unit has an inner cavity , the side of the sounding unit close to the rear cavity is provided with a leakage part that communicates with the inner cavity; It is fixed on the support wall and arranged around the periphery of the sound-emitting unit, the air-permeable spacer surrounds the periphery of the sound-emitting unit, one end of the air-permeable spacer is fixed to the bracket, and the other end is is fixed on the side of the sounding unit away from the upper cover, and the air-permeable isolation component completely covers the leakage part; the bracket is provided with a fracture, and the conductive terminal is clamped on the fracture and clamped and fixed. Between the support wall and the ventilating spacer, the conductive terminal extends to the outside of the receiving space through the fracture and the back cavity; the cavity passes through the leakage portion and the ventilating spacer in turn. The component is communicated with the rear cavity, the rear cavity is filled with sound-absorbing particles, and the air-permeable isolation component encapsulates the sound-absorbing particles in the rear cavity.

Preferably, the air-permeable spacer includes a ring-shaped first fixing portion fixed on a side of the sound-generating unit away from the upper cover. A ring-shaped body that is bent and extended, and a second ring-shaped fixing part that is bent and extended from the end of the body away from the first fixing part to the direction away from the sounding unit; the body and the The sounding units are arranged at intervals, and the second fixing portion is fixed to an end of the bracket away from the supporting wall.

Preferably, the sound-generating unit includes a vibration system, a basin frame supporting the vibration system, and a magnetic circuit system fixed with the basin frame and driving the vibration system to vibrate and emit sound, the magnetic circuit system comprising a lower splint and a mounting plate In the magnet part of the lower splint, the magnet part has a magnetic gap, the pot frame is fixed with the support wall, and the vibration system includes a vibrating film fixed on the side of the pot frame away from the lower splint; For the voice coil fixed with the diaphragm and extending to the magnetic gap, the basin frame and the lower plate form a leakage portion.

Preferably, the lower clamping plate is provided with a fixing groove recessed from the side away from the upper cover to the direction of the upper cover, the fixing groove is placed on the periphery of the lower clamping plate, and the first fixing portion fixed to the fixing groove.

Preferably, a gap is formed between the lower clamping plate and the lower cover, and the body passes through the gap and is connected with the lower cover.

Preferably, the basin frame is attached and fixed to the support wall through glue, the bracket is attached and fixed to the support wall through the glue, the conductive terminal is attached and fixed to the support wall through the glue, and is fixed on the support wall through the glue The position of the fracture is fitted and fixed to the bracket.

Preferably, the bracket includes a first end portion, a second end portion, and a connecting portion connecting the first end portion and the second end portion, and between the first end portion and the second end portion The fracture is formed, and an end of the first end portion close to the connecting portion is higher than an end of the first end portion close to the second end portion.

Preferably, an end of the second end portion close to the connecting portion is higher than an end of the second end portion close to the first end portion.

Preferably, the support wall includes a first support wall extending from the upper cover body toward the lower cover and a second support extending from the outer periphery of the first support wall toward the lower cover The sound generating unit is supported and fixed on one end of the first support wall close to the lower cover, and the bracket is supported and fixed on the end of the second support wall close to the lower cover.

Preferably, the body and the support wall are disposed in the opposite direction.

Compared with the related art, the speaker box of the present invention supports and fixes the sound-generating unit and the air-permeable isolation component on the supporting wall respectively, so as to jointly divide the accommodation space into a front cavity and a rear cavity. A bracket and a ventilating spacer are respectively arranged around the peripheral side of the sounding unit. The bracket is provided with a fracture, and the conductive terminal is clamped in the fracture and clamped and fixed between the support wall and the gas-permeable separator. The conductive terminal passes through the fracture and the back The cavity extends out of the accommodating space; the breathable isolation component completely covers the leakage part and encapsulates the sound-absorbing particles in the rear cavity. The above structure makes the rear cavity of the ventilated isolation component on the side away from the sound-emitting unit filled with sound-absorbing particles and then all used as a virtual sound cavity, which effectively improves the low-frequency acoustic performance of the speaker box; The volume of the rear cavity is greatly increased, thereby effectively improving the filling efficiency of the sound-absorbing particles in the rear cavity.

【Description of drawings】

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the stereoscopic structure schematic diagram of the speaker box of the present invention;

Fig. 2 is the partial three-dimensional structure exploded schematic diagram of the speaker box of the present invention;

3 is a schematic diagram of the assembly structure of the speaker box of the present invention after the lower cover is omitted;

Fig. 4 is a sectional view along line A-A in Fig. 1;

FIG. 5 is an enlarged view of the portion indicated by B in FIG. 4 .

【Detailed ways】

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-5 at the same time, the present invention provides a speaker box 100 , which includes a lower cover 1 , an upper cover 2 , a sounding unit 3 , a ventilating isolation component 4 and a conductive terminal 5 . The lower cover 1 is disposed on the upper cover 2 and together form a receiving space 10 .

The sounding unit 3 is accommodated in the accommodating space 10 and supported by the upper cover 2 .

Specifically, the upper cover 2 includes an upper cover body 21 covered on the lower cover 1 , a support wall 22 extending from the upper cover body 21 toward the lower cover, and a support wall 22 formed on the upper cover The sound guide channel 23 of the cover body 21 .

In this embodiment, the support wall 22 is annular. The support wall 22 includes a first support wall 221 that protrudes from the upper cover body 21 toward the lower cover 1 , and a first support wall 221 that extends from the outer periphery of the first support wall 221 toward the lower cover 1 . The second support wall 222 , that is, the first support wall 221 and the second support wall 222 form a support step structure.

The sound generating unit 3 is supported and fixed on the support wall 22 . In this embodiment, the peripheral edge of the sounding unit 3 is fixed to the supporting wall 22 by glue.

The air-permeable isolation component 4 and the sounding unit 3 jointly divide the accommodation space 10 into a front cavity 101 and a rear cavity 102 . Wherein, the sounding unit 3 has an inner cavity 103 . A leakage portion 30 that communicates with the inner cavity 102 is provided on the side of the sound-producing unit 3 close to the rear cavity 102 . The leakage portion 30 is in air communication with the inner cavity 103 .

Specifically, the sounding unit 3 is supported and fixed to the end of the first support wall 221 close to the lower cover 1 , that is, supported by the support formed by the first support wall 221 and the second support wall 222 . On the step structure, it is fixed by applying glue on the periphery of the sounding unit 3 .

The sound generating unit 3 includes a vibration system 31 , a basin frame 32 supporting the vibration system 31 , and a magnetic circuit system 33 fixed to the basin frame 32 and driving the vibration system 31 to vibrate and produce sound.

The magnetic circuit system 33 includes a lower clamping plate 331 and a magnet part 332 mounted on the lower clamping plate 331, and the magnet part 332 has a magnetic gap 330. The lower clamping plate 331 is provided with a fixing groove 3311 recessed from the side away from the upper cover 2 toward the upper cover 2 . The fixing groove 3311 is placed on the periphery of the lower clamping plate 331 . The fixing groove 3311 is used to fix the air-permeable isolation assembly 4.

The basin frame 32 is fixed to the support wall 22 . In this embodiment, the basin frame 32 is attached and fixed to the support wall 22 by glue. The basin frame 32 and the lower clamping plate 331 form the leakage portion 30 .

The vibration system 31 includes a diaphragm 311 fixed on the side of the basin frame 32 away from the lower plate 331 , and a voice coil 312 fixed with the diaphragm 311 and extending to the magnetic gap 330 .

Leakage part 30 Leakage part 30 Specifically, the diaphragm 311 is spaced from the upper cover body 21 to form a front acoustic cavity 6 , and the sound guiding channel 23 communicates the front acoustic cavity 6 with the outside world and forms the front cavity 101 together , used to form a side sounding structure. The sound-generating unit 3 , the upper cover 2 and the lower cover 1 together form the rear cavity 102 for improving low-frequency acoustic performance.

The air-permeable isolation component 4 is fixed to the support wall 22 . The gas-permeable insulation assembly 4 completely covers the leakage portion 30 . The rear cavity 102 is filled with sound-absorbing particles 7, and the air-permeable isolation component 4 encapsulates the sound-absorbing particles 7 in the rear cavity 102 to form a DBASS virtual sound cavity for further improving low-frequency acoustic performance.

The breathable isolation component 4 is annular. The air-permeable isolation component 4 is arranged around the sound-generating unit 3. Specifically, the breathable isolation assembly 4 includes a ring-shaped support 41 and a ring-shaped breathable isolation member 42 . That is, both the bracket 41 and the air-permeable spacer 42 are annular and are arranged around the sounding unit 3 .

The brackets 41 are stacked and fixed on the support wall 22 and arranged around the periphery of the sounding unit 3 . In this embodiment, the brackets 41 are fixed to the support wall 22 by glue. Specifically, the bracket 41 is supported and fixed on one end of the second support wall 222 close to the lower cover 1 .

More preferably, the glue used to fix the bracket 41 to the second support wall 222 and the glue used to fix the sounding unit 3 to the first support wall 221 are integrally connected and solidified.

The ventilating spacer 42 surrounds the peripheral side of the sounding unit 3 . One end of the ventilating spacer 42 is fixed to the bracket 41 , and the other end is fixed to the side of the sounding unit 3 away from the upper cover 2 . The inner cavity 103 communicates with the rear cavity 102 through the leakage portion 30 and the air-permeable spacer 42 in sequence.

In this embodiment, the support 41 and the air-permeable spacer 42 make the air-permeable spacer 4 form a three-dimensional structure, so that the back cavity 102 on the side of the air-permeable spacer 4 away from the sound-emitting unit 3 is filled with sound-absorbing particles After 7, all of them are used as the DBASS virtual sound cavity, which effectively improves the low-frequency acoustic performance of the speaker box 100; because the breathable isolation component 4 is wound around the sound-emitting unit 3, the volume of the rear cavity 102 is greatly increased, thereby effectively The filling efficiency of the sound-absorbing particles 7 in the rear cavity 102 is improved.

Specifically, the ventilating spacer 42 includes a ring-shaped first fixing portion 421 fixed on the side of the sounding unit 3 away from the upper cover 2 , and is approached from the outer periphery of the first fixing portion 421 The ring-shaped main body 422 is bent and extended in the direction of the upper cover 2 , and the ring-shaped first body 422 is bent and extended in the direction away from the sounding unit 3 from the end of the main body 422 away from the first fixing portion 421 . Two fixed parts 423 . Wherein, the first fixing part 421 is fixed on the side of the sounding unit 3 away from the upper cover 2 . Specifically, the first fixing portion 421 is fixed to the fixing groove 3311 . The body 422 is spaced apart from the sounding unit 3 ; the second fixing portion 423 is fixed to an end of the bracket 41 away from the support wall 22 . A gap is formed between the lower clamping plate 331 and the lower cover 1 , and the body 422 passes through the gap and is connected to the lower cover 1 . This structure makes the air-permeable isolation component 4 form a three-dimensional structure.

In this embodiment, the main body 422 is disposed opposite to the support wall 22, and the main body 422 and the sounding unit 3 are disposed at intervals. That is, the sound generating unit 3 is wound around. The first fixing part 421 is in contact with the sounding unit 3, and the structure is arranged to make the volume of the inner cavity 103 as small as possible, and make the volume of the rear cavity 102 as large as possible. The effective utilization rate of the back cavity 102 is improved, and the filling efficiency of the back cavity 102 is improved.

In order to increase the volume of the back cavity 102 , the back cavity 102 is filled with more sound-absorbing particles 7 . In this embodiment, the lower cover 1 includes a lower cover body 11 covered on the upper cover 2 and an opening 110 penetrating the lower cover body 11 . Both the air-permeable spacer 42 and the sound-generating unit 3 are at least partially accommodated in the opening 110 . The lower cover body 11, the ventilating isolation assembly 4 and the upper cover 2 together form the rear cavity 102. The ventilating spacer 42 is fixed to the lower cover body 11 to separate the rear cavity 102 from the opening 110 .

The conductive terminals 5 are electrically connected to the sound-generating unit 3 and extend to the outside of the speaker box 100 through the rear cavity 102 for introducing external electrical signals to the sound-generating unit 3 .

The bracket 41 is provided with a fracture 410 . The fracture 410 penetrates through the bracket 41 and divides the bracket 41 into two parts. The conductive terminal 5 is clamped on the cutout 410 and clamped and fixed between the support wall 22 and the air-permeable spacer 42 . Specifically, the conductive terminal 5 is fixed to the second support wall 222 at the position of the fracture 410 . The conductive terminal 5 extends to the outside of the receiving space 10 through the fracture 410 and the rear cavity 102. Of course, when the conductive terminal 5 extends through the fracture 410, the fracture 410 needs to form a seal to prevent the sound-absorbing particles 7 from entering the interior. Cavity 103.

Specifically, the conductive terminal 5 is adhered and fixed to the support wall 22 by the glue, and is adhered and fixed to the bracket 41 at the position of the fracture 410 . In this embodiment, the bracket 41 includes a first end portion 411, a second end portion 412, and a connecting portion 413 connecting the first end portion 411 and the second end portion 412. The first end portion 411 and the second end portion 412 are connected to each other. The fracture 410 is formed between the two end portions 412 , and the end of the first end portion 411 close to the connecting portion 413 is higher than the end of the first end portion 411 close to the second end portion 412 . Of course, in the same way, the end of the second end portion 412 close to the connecting portion 4 may also be set higher than the end of the second end portion 412 close to the first end portion 411. That is, the distance of the fracture 420 from the side away from the support wall 22 along the extending direction of the bracket 41 is greater than the distance from the side close to the support wall 22 . In this embodiment, the fracture 410 is in the shape of an inverted trapezoid along the direction of the ventilation spacer 42 toward the support wall 22 . This structure allows glue to flow from the side of the fracture 420 away from the support wall 22 to seal and fix the conductive terminal 5 , which is beneficial to assembly and improves reliability.

Compared with the related art, the speaker box of the present invention supports and fixes the sound-generating unit and the air-permeable isolation component on the supporting wall respectively, so as to jointly divide the accommodation space into a front cavity and a rear cavity. A bracket and a ventilating spacer are respectively arranged around the peripheral side of the sounding unit. The bracket is provided with a fracture, and the conductive terminal is clamped in the fracture and clamped and fixed between the support wall and the gas-permeable separator. The conductive terminal passes through the fracture and the back The cavity extends out of the accommodating space; the breathable isolation component completely covers the leakage part and encapsulates the sound-absorbing particles in the rear cavity. The above structure makes the rear cavity of the ventilated isolation component on the side away from the sound-emitting unit filled with sound-absorbing particles and then all used as a virtual sound cavity, which effectively improves the low-frequency acoustic performance of the speaker box; The volume of the rear cavity is greatly increased, thereby effectively improving the filling efficiency of the sound-absorbing particles in the rear cavity.

The above are only the embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and accompanying drawings of the present invention, or directly or indirectly applied to other Relevant technical fields are similarly included in the scope of patent protection of the present invention.

Claims (10)

1. A loudspeaker box comprises a lower cover, an upper cover, a sound production single body, a ventilation isolation assembly and a conductive terminal, wherein the upper cover is covered on the lower cover and jointly encloses an accommodating space; the upper cover is arranged on the upper cover body of the lower cover and a supporting wall which is extended from the upper cover body to the lower cover in a protruding mode, the sounding monomer is supported and fixed on the supporting wall, the ventilating isolation assembly is fixed on the supporting wall, the ventilating isolation assembly and the sounding monomer jointly separate the accommodating space into a front cavity and a rear cavity, the sounding monomer is provided with an inner cavity, one side of the sounding monomer, which is close to the rear cavity, is provided with a leakage part communicated with the inner cavity, the ventilating isolation assembly comprises an annular support and an annular ventilating isolation piece, the support is overlapped and fixed on the supporting wall and surrounds the sounding monomer, the ventilating isolation piece surrounds the sounding monomer, one end of the ventilating isolation piece is fixed on the support, and the other end of the ventilating isolation piece is fixed on one side of the sounding monomer, which is far away from the upper cover, the breathable barrier component completely covers the leak; the support is provided with a fracture, the conductive terminal is clamped at the fracture and clamped and fixed between the support wall and the breathable isolating piece, and the conductive terminal extends out of the accommodating space through the fracture and the rear cavity; the inner chamber passes through in proper order the leakage part reaches ventilative separator with the back chamber intercommunication, the intussuseption of back chamber is filled with and is inhaled the sound granule, ventilative isolation assembly will inhale the sound granule encapsulate in the back intracavity.

2. The speaker box according to claim 1, wherein the air-permeable partition includes a first annular fixing portion fixed to a side of the sound generating unit away from the top cover, an annular body extending from an outer periphery of the first fixing portion to a direction close to the top cover, and a second annular fixing portion extending from an end of the body away from the first fixing portion to a direction away from the sound generating unit, the body and the sound generating unit being spaced apart from each other, and the second fixing portion being fixed to an end of the bracket away from the supporting wall.

3. The loudspeaker box of claim 2, wherein the sound generating unit comprises a vibration system, a frame supporting the vibration system, and a magnetic circuit system fixed with the frame and driving the vibration system to vibrate and generate sound, the magnetic circuit system comprises a lower plate and a magnet part mounted on the lower plate, the magnet part has a magnetic gap, the frame is fixed with the support wall, the vibration system comprises a diaphragm fixed on one side of the frame away from the lower plate and a voice coil fixed with the diaphragm and extending to the magnetic gap, and the frame and the lower plate form a leakage part.

4. The speaker cabinet as claimed in claim 3, wherein the lower clamp plate is provided with a fixing groove concavely formed from a side away from the upper cover toward a direction of the upper cover, the fixing groove being disposed at a periphery of the lower clamp plate, the first fixing portion being fixed to the fixing groove.

5. A loudspeaker enclosure according to claim 3, wherein a gap is formed between the lower clamping plate and the lower cover, the body passing through the gap and being connected to the lower cover.

6. The speaker box according to claim 3, wherein the frame is fixed to the support wall by glue, and the conductive terminal is fixed to the support wall by glue and fixed to the frame at the fracture position.

7. A loudspeaker enclosure according to claim 1, wherein the bracket comprises a first end portion, a second end portion and a connecting portion connecting the first end portion and the second end portion, the first end portion and the second end portion forming the break therebetween, an end of the first end portion adjacent the connecting portion being higher than an end of the first end portion adjacent the second end portion.

8. A loudspeaker enclosure according to claim 7, wherein the end of the second end portion adjacent the connecting portion is higher than the end of the second end portion adjacent the first end portion.

9. The speaker box according to claim 1, wherein the support walls include a first support wall that is protruded and extended from the upper cover body toward the lower cover, and a second support wall that is protruded and extended from an outer peripheral edge of the first support wall toward the lower cover, the sound generating unit is supported and fixed to one end of the first support wall near the lower cover, and the bracket is supported and fixed to one end of the second support wall near the lower cover.

10. A loudspeaker enclosure according to claim 2, wherein the body is disposed directly opposite the support wall.

Images