CN104238657A - Portable electronic device - Google Patents

Abstract

A portable electronic device comprises a shell and a loudspeaker. The shell is provided with a back part, a side wall connected with the back part and a sound hole arranged on the side wall. The speaker is disposed in the housing and has a diaphragm extending along a plane. The plane is located between the sound hole and the back. Therefore, the tone quality of the portable electronic device is improved, and the thickness of the portable electronic device is reduced.

Description

portable electronic device

technical field

The present invention mainly relates to a portable electronic device, in particular to a portable electronic device with a speaker. the

Background technique

As shown in FIG. 1 , in order to obtain a large-area display screen in a currently known smart phone 100, the display screen 110 occupies most of the front side of the smart phone 100, so the speaker 120 can only be stacked on the display screen. the top of the screen 110 . In addition, in order to reduce the thickness of the smart phone 100, the speaker 120 is placed in a direction parallel to the display screen 110, and in order to correspond to the sounding surface 121 of the speaker 120, the sound hole 132 is arranged on the back plate 131 of the casing 130. However, when the smart phone 100 is in use, the display screen 110 faces the user, so disposing the sound hole 132 on the back panel 131 of the casing 130 will greatly reduce the sound quality of the smart phone 100 . the

As shown in FIG. 2 , in order to improve the sound quality of the smart phone 100 , in the known technology, a sound hole 132 is disposed on the side panel 133 of the casing 130 . In addition, in order to enable the sound produced by the speaker 120 to be derived from the sound hole 132 with little impact on the sound quality, a channel 134 is formed between the sounding surface 121 of the speaker 120 and the back plate 131, and the sound hole 132 The upper part of the sounding surface 121 is set to be connected with the channel 134 . However, under this structure, the thickness of the smart phone 100 will be increased due to the height of the sound hole 132 . the

In addition, the known speaker 120 is directly fixed on the motherboard 140 . As shown in FIG. 1 and FIG. 2 , the motherboard 140 is located between the speaker 120 and the display screen 110 , thus increasing the thickness of the smart phone 100 . the

Contents of the invention

In order to solve the deficiency of the above-mentioned conventional technologies, the purpose of the present invention is to provide a portable electronic device, the sound hole of which is located on the side wall of the casing, and the casing has a thinner thickness. the

In order to achieve the above objectives, the present invention provides a portable electronic device, which includes a casing and a speaker assembly. The shell has a back, a side wall connected to the back, and a sound hole arranged on the side wall. The speaker assembly includes a base and a speaker. The base is arranged in the housing, and has an accommodating portion and an inclined portion connected to the accommodating portion, wherein a channel is formed between the inclined portion and the side wall. The loudspeaker is arranged in the accommodating part and has a vibrating membrane. A resonant cavity is formed between the diaphragm and the back, and the passages communicate with the resonant cavity and the sound hole respectively. In addition, the diaphragm extends along a plane, and the plane is located between the sound hole and the back, and the sound hole is separated from the plane by a predetermined distance. the

To sum up, the sound hole of the portable electronic device of the present invention is located on the side wall of the casing, so as to improve the sound quality of the portable electronic device. In addition, through the resonant cavity and the channel formed between the base and the shell, the position of the sound hole can be lower than the diaphragm of the speaker, so the thickness of the portable electronic device can be reduced. the

Description of drawings

1 and 2 are schematic diagrams of a known smart phone. the

FIG. 3 is a perspective view of the portable electronic device of the present invention. the

FIG. 4 is a rear view of the portable electronic device of the present invention. the

FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 . the

Fig. 6 is a perspective view of the speaker assembly of the present invention. the

FIG. 7 is a cross-sectional view taken along line BB in FIG. 4 . the

Fig. 8 is a perspective view of another speaker assembly of the present invention. the

Smartphone 100

display screen 110

Speaker 120

Pronunciation 121

Chassis 130

Backplane 131

Sound hole 132

Side panel 133

Channel 134

Motherboard 140

Portable Electronic Devices 2

Shell 20

front side 21

Protection board 221

back 22

side wall 23

Sound holes 24, 25

Grille 26

display screen 30

Display panel 31

Speaker components 40

Base 41

Accommodating part 411

Upper surface 4111

Storage tank 4112

Opening 4113

Inclined part 412

Inclined surface 4121

Support block 4122

Fixed part 413

Speaker 42

Housing 421

Diaphragm 422

Magnetic Assembly 423

Groove 424

Electrode shrapnel 425

Flexible printed circuit board 43

Washer 44

First side 441

Second side 442

Inclined side 443

Speaker components 50

Base 51

Fixed part 513

Speaker 52

Flexible printed circuit board 54

Motherboard 60

Electrical connector 61

Electronic Parts A1

Resonant cavity C1, C3

Channel C2, C4

Scheduled distance d1

Extension direction D1, D2

Width W1, W2, W3, W4

Plane P1

Detailed ways

FIG. 3 is a perspective view of the portable electronic device 2 of the present invention. FIG. 4 is a rear view of the portable electronic device 2 of the present invention. FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 . The portable electronic device 2 can be a smart phone or a tablet computer. The portable electronic device 2 includes a casing 20 , a display screen 30 , and two speaker components 40 , 50 . The shell 20 includes a front side 21 , a back 22 , a side wall 23 , two sound holes 24 , 25 , and two grilles 26 . The front side portion 21 is opposite to the back portion 22 , and the side wall 23 is connected to the front side portion 21 and the back portion 22 . the

The sound holes 24 and 25 are respectively arranged at the two ends of the side wall 23 with a distance of 7 cm to 15 cm, which may be about 10 cm in this embodiment. The mesh covers 26 are respectively arranged on the sound holes 24 and 25 to prevent dust and the like from entering the interior of the casing 20 through the sound holes 24 and 25 . the

The front side portion 21 may include a protection plate 221 . The display screen 30 may include a display panel 31 located between the protective plate 221 and the back 22 . The speaker components 40 , 50 are disposed in the casing and located between the back 22 and the display panel 31 . The speaker assembly 40 corresponds to the sound hole 24, and the speaker assembly 50 corresponds to the sound hole 25. the

Since the sound holes 24 and 25 are arranged on the side wall 23 of the casing 20 and are spaced apart from each other, a good stereo effect can be obtained when the user lays the portable electronic device 2 horizontally and watches a video displayed on the display screen 30 . the

FIG. 6 is a perspective view of the speaker assembly 40 of the present invention. The speaker assembly 40 includes a base 41 , a speaker 42 , a flexible circuit board 43 , and a washer 44 . The base 41 is disposed in the housing 20 and located between the display panel 31 and the back 22 . The base 41 has an accommodating portion 411 , an inclined portion 412 , and a fixing portion 413 . The accommodating portion 411 has an upper surface 4111 and an accommodating groove 4112 . The upper surface 4111 can be parallel to the back 22 , that is, have the same curved surface as the back 22 , and the upper surface 4111 can also be a plane. The receiving groove 4112 is formed on the upper surface 4111 and has an opening 4113 on the upper surface 4111 . the

The speaker 42 is disposed in the accommodating groove 4112 of the accommodating portion 411 and generally extends along an extending direction D1. The speaker 42 may include a casing 421 , a diaphragm 422 , a magnetic component 423 , a groove 424 , and an electrode elastic piece 425 . The housing 421 is disposed in the receiving groove 4112 . The diaphragm 422 is disposed in the casing 421 and the receiving groove 4112 , corresponding to the opening 4113 of the receiving groove 4112 , so the diaphragm 422 exposes the receiving portion 411 through the opening 4113 . The distance between the diaphragm 422 and the back 22 may be 0.3 mm to 1 mm, and in this embodiment it is about 0.5 mm. the

The magnetic component 423 is disposed in the casing 421 and corresponds to the diaphragm 422 , and the magnetic field generated by the magnetic component 423 on the diaphragm 422 causes the diaphragm 422 to vibrate. The groove 424 is disposed at the bottom of the housing 421 . The electrode spring 425 is electrically connected to the magnetic component 423 , and is disposed on the housing 421 and extends into the groove 424 . the

The flexible circuit board 43 is disposed on the base 41 . One end of the flexible circuit board 43 extends inside the groove 424 and connects with the electrode spring 425 , and the other end extends to the outside of the base 41 . the

The washer 44 is substantially square-shaped. The gasket 44 is disposed on the upper surface 4111 of the accommodating portion 411 and surrounds part of the opening 4113 of the accommodating groove 4112 . The gasket 44 is located between the accommodating portion 411 and the back 22 and connected to the upper surface 4111 and the back 22 . The material of the washer 44 can be rubber, plastic, or foam, and its thickness can be about 0.8 mm. After being compressed by the accommodating portion 411 and the back 22 , its thickness is about 0.5 mm. the

A resonant cavity C1 is formed between the gasket 44 , the upper surface 4111 of the accommodating portion 411 , the vibrating membrane 422 , and the back 22 , and the vibrating membrane 422 is exposed in the resonant cavity C1 . The volume of the resonant cavity C1 can be 0.1cc to 0.3cc, and in this embodiment it is about 0.2cc. the

The inclined portion 412 is connected to the accommodating portion 411 . The inclined portion 412 has an inclined surface 4121 , one side of the inclined surface 4121 is connected to the upper surface 4111 , and the other side is adjacent to the bottom of the sound hole. The washer 44 extends to the inclined surface 4121 . A channel C2 is formed between the washer 44 , the inclined surface 4121 of the inclined portion 412 and the side wall 23 , and the channel C2 can be an arc-shaped channel. The channel C2 communicates with the resonance cavity C1 and the sound hole 24 respectively. The volume of channel C2 may be 0.05cc to 0.2cc, in this embodiment about 0.1cc. In this embodiment, the ratio of the total volume of the resonance cavity C1 and the channel C2 to the volume of the speaker 42 is approximately 1:2. the

The inclined surface 4121 can be parallel to the side wall 23 , that is, the inclined surface 4121 can match the curved surface of the side wall 23 , and at this time, the inclined surface 4121 can be a curved surface. If the sidewall 23 extends along a plane, the inclined surface 4121 can be a plane. Therefore, this embodiment can be applied to casings 20 of different designs. the

As shown in FIG. 5 , the diaphragm 422 extends along a plane P1 , and the plane P1 is located between the sound hole 24 and the back 22 . In FIG. 5 , the plane P1 is a horizontal plane. The sound hole 24 is separated from the plane P1 by a predetermined distance d1, and the predetermined distance d1 may be between 1 mm and 1.5 mm, and in this embodiment is about 1.2 mm. Compared with the known technology, the sound hole 24 must be located between the back 22 and the plane P1. In this embodiment, the sound hole 24 can be made The position of can be lower than the diaphragm 422 of the speaker 42 . The thickness of the portable electronic device 2 can be reduced. the

The fixing portion 413 generally extends along the extending direction D1, and the fixing portion 413 is used for assisting in fixing the electronic component A1 inside the casing 20, such as the camera module shown in FIG. 4 . Therefore, the shape of the fixing portion 413 matches the internal design of the portable electronic device 2 and is not limited. the

For another example, as shown in FIG. 6 , the width W1 of the resonant cavity C1 is greater than the width W2 of the channel C2 . The washer 44 has a first side 441 on the receiving portion 411 , a second side 442 on the inclined portion 412 , and an inclined side 443 connected to the first side 441 and the second side 442 . The first and second sides 441 , 442 are parallel to each other, and the inclined side 443 is inclined relative to the first and second sides 441 , 442 . The standing wave caused by the sound wave generated by the speaker 42 between the resonant cavity C1 and the channel C2 can be reduced by the inclined side 443 . the

In addition, in this embodiment, the inclined portion 412 may have a support block 4122 disposed on the inclined surface 4121 . The support block 4122 is located between the net cover 26 and the inclined portion 412 and can be used to fix and support the net cover 26 . In another embodiment, the support block 4122 and the mesh cover 26 can be selectively provided. the

FIG. 7 is a cross-sectional view taken along line BB in FIG. 4 . FIG. 8 is a perspective view of the speaker assembly 50 of the present invention. The main difference between the speaker assembly 50 and the speaker assembly 40 lies in. In order to match the internal design of the housing 20 , the speaker 50 of the speaker assembly 50 is roughly along an extending direction D2 , wherein the extending direction D2 is perpendicular to the extending direction D1 . Therefore, the width W3 of the resonant cavity C3 is wider than the width W1 of the resonant cavity C1 , and the width W4 of the channel C4 is wider than the width W2 of the channel C2 . The fixing portion 513 of the base 51 is different in shape from the fixing portion 413 of the base 41 . the

For another example, as shown in FIG. 7 , the flexible circuit board 54 is electrically connected to the main board 60 through an electrical connector 61 . Therefore, the motherboard 60 is disposed on one side of the speaker 52 instead of between the speaker 52 and the display panel 31 . Since the thickness of the flexible circuit board 54 is much smaller than that of the main board 60 , in this embodiment, the thickness of the portable electronic device 2 can be further reduced through the flexible circuit board 41 . the

To sum up, the sound hole of the portable electronic device of the present invention is located on the side wall of the casing, so as to improve the sound quality of the portable electronic device. In addition, through the resonant cavity and the channel formed between the base and the shell, the position of the sound hole can be lower than the diaphragm of the speaker, so the thickness of the portable electronic device can be reduced. the

Although the present invention is disclosed above with various embodiments, they are only exemplary references rather than limiting the scope of the present invention. Any person skilled in the art may make some modifications without departing from the spirit and scope of the present invention. Changes and retouching. Therefore, the above-mentioned embodiments are not intended to limit the scope of the present invention, and the protection scope of the present invention should be defined by the appended claims. the

Claims (11)

1. A portable electronic device, comprising: A shell having a back, a side wall connected to the back, and a sound hole arranged in the side wall; and A speaker assembly, comprising; a base, disposed in the housing, and has a receiving portion and an inclined portion connected to the receiving portion, wherein a channel is formed between the inclined portion and the side wall; and A loudspeaker, which is arranged in the above-mentioned accommodating part, and has a diaphragm, wherein a resonant cavity is formed between the above-mentioned diaphragm and the above-mentioned back, and the above-mentioned channels are respectively connected to the above-mentioned resonant cavity and the above-mentioned sound hole; Wherein the diaphragm extends along a plane, and the plane is located between the sound hole and the back, and the sound hole is separated from the plane by a predetermined distance. 2. The electronic device according to claim 1, wherein the predetermined distance is between 1 mm and 1.5 mm, and the distance between the diaphragm and the back is 0.3 mm to 1 mm. 3. The electronic device as claimed in claim 1, wherein the inclined portion has an inclined surface, and the channel is formed between the inclined portion and the side wall. 4. The electronic device as claimed in claim 3, wherein the inclined surface is a curved surface, and the channel is an arc channel. 5. The electronic device as claimed in claim 1, wherein the resonant cavity has a volume of 0.1cc to 0.3cc, and the channel has a volume of 0.05cc to 0.2cc. 6 . The electronic device as claimed in claim 1 , wherein a ratio of the total volume of the resonant cavity and the channel to the volume of the single speaker is approximately 1:2. 7. The electronic device according to claim 1, further comprising a gasket located between the accommodating portion and the back, and the resonant cavity is located in the washer, wherein the washer has a first one located in the accommodating portion side, a second side on the slope, and a slope connected to the first side and the second side, wherein the first and second sides are parallel to each other, and the slope is opposite to the first and second sides The second side is sloped. 8. The electronic device as claimed in claim 1, wherein the speaker assembly further comprises a flexible circuit board disposed on the base, and the speaker further comprises an electrode spring connected to the flexible circuit board. 9. The electronic device as claimed in claim 1, wherein the width of the resonant cavity is larger than the width of the channel. 10. The electronic device as claimed in claim 1, further comprising a display panel disposed in the casing, and the speaker is located between the back and the display panel. 11. The electronic device as claimed in claim 10, further comprising a main board disposed in the housing and not located between the speaker and the display panel.