CN202103810U

CN202103810U - MP3 player with novel structure

Info

Publication number: CN202103810U
Application number: CN2011202017615U
Authority: CN
Inventors: 黄佰胜
Original assignee: SHENZHEN NANHE HUAYI PLASTIC PRODUCT CO Ltd
Current assignee: SHENZHEN NANHE HUAYI PLASTIC PRODUCT CO Ltd
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-01-04
Anticipated expiration: 2021-06-15

Abstract

The utility model discloses an MP3 player with a novel structure. The MP3 player comprises a main PCBA (Printed Circuit Board Assembly) board, a loudspeaker, a cell, an outer casing, a middle casing, and a passive vibration membrane, wherein the main PCBA board comprises a PCB (Printed Circuit Board), an SD (Secure Digital) card slot, a charging jack, and an earphone jack, the outer casing comprises a horn mesh, a surface cover and a cell cover, the horn mesh is embedded on the surface cover, the surface cover is provided with a hollow part, the loudspeaker is fixed in the hollow part of the surface cover, the main PCBA board is fixed in the middle casing, the upper end face of the main PCBA board is in fastening connection with the surface cover, and the lower end of the main PCBA board is in fastening connection with the cell cover. The MP3 player well seals the loudspeaker, has enough space for generating acoustic resonance, makes auditory impression deep and clear, and greatly improves tone quality; and the MP3 player increases the driving area of a vibration membrane by adding the passive vibration membrane, and well presents a bass effect.

Description

A kind of MP3 player of new structure

Technical field

The utility model relates to a kind of MP3 player, especially a kind of MP3 player with good tonequality.

Background technology

The MP3 player has the band boombox and is not with the branch of boombox type.The present popular on the market MP3 player that has boombox; Its structure has been continued to use not the type with boombox basically; Adopt 2 layers of structural design of drain pan+face-piece, the influence of product structure to tonequality do not considered in this design, and Chang Yin is not enough to the sealing property of loud speaker; Make tonequality have a greatly reduced quality, and then must rely on earphone and obtain sound effect preferably; Simultaneously, the MP3 player is owing to receive the restriction of volume, and the loud speaker of its use can not be too big; Thus, because the bore of the diaphragm of loudspeaker is too little, when it shakes at every turn; The air capacity that promotes just seldom; And the volume of air that bass and loudspeaker promote has direct relation, and like this, the born defective of MP3 player has just caused the shortage of its bass.

The utility model content

The purpose of the utility model is to solve the problem that exists in the prior art, and a kind of MP3 player of new structure is provided, and the inner space that has increased the MP3 player has increased the volume that can promote air, thereby can obtain good bass effect.

The technical scheme of the utility model is: a kind of MP3 player comprises: main PCB A plate, loud speaker, battery, shell, and said main PCB A plate comprises PCB circuit board, SD card slot, charging jack, earphone jack; Said shell comprises speaker net, cover and battery cover; Said speaker net is embedded on the cover, and said cover is provided with hollow-out parts, and said loud speaker is fixed in the hollow-out parts of cover; Also comprise mesochite; Said main PCB A plate is fixed in the mesochite, and its upper end is fastenedly connected with cover, and lower end and battery cover are fastenedly connected.

Preferably: also be provided with the loud speaker lining, said loud speaker lining and said cover secure fit, said loud speaker lining is provided with hollow-out parts, and said loud speaker is assemblied between the hollow-out parts of hollow-out parts and cover of loud speaker lining.

Preferably: said main PCB A plate also is provided with through hole, and the afterbody of said loud speaker passes from the hollow-out parts of loud speaker lining, and penetrates the through hole of PCBA plate.

Preferably: said loud speaker lining is provided with two through holes, is provided with two protruding posts on the cover accordingly, and said protruding post can insert in the through hole on the loud speaker lining.

Preferably: the horizontal direction at said loud speaker also is provided with passive shake film, also is provided with second hollow-out parts on said cover and the loud speaker lining respectively, and said passive shake film is fastened on second hollow-out parts on the loud speaker lining.

Preferably: the outer ring of said passive shake film is the TPU film, and inner ring is an iron plate, and TPU film and iron plate are bonded together.

Preferably: said charging jack and earphone jack are welded on the edge of main PCB A plate; Said charging jack and earphone jack are passed the through hole that the mesochite edge is offered; Also be provided with main PCB A plate lining, said main PCB A plate lining covers said charging jack and earphone jack, and is connected with the slotting shape of mesochite.

Preferably: the back side of said mesochite is provided with cavity volume, shown in battery be placed in this cavity volume.

Preferably: the outside of said mesochite also is provided with the lanyard button.

Preferably: the magnitude relationship of the diameter D1 of passive vibrating diaphragm and the vibrating diaphragm D2 of loud speaker is following: 95%*D2≤D1≤D2.

The shell of the MP3 player of the utility model designs for 3-tier architecture, closely cooperates between each parts, has enough spaces to empathize.Wherein speaker net and cover are ground floor; Mesochite constitutes the second layer; Battery cover then is the 3rd layer.Said 3-tier architecture shell and main PCB A plate, main PCB A plate lining, loud speaker, passive vibrating diaphragm, loud speaker lining, secondary PCBA plate, volume button, shift knob, battery, lanyard are buckled through assembling; Constituted airtight relatively body structure, made that MP3 player tonequality is well guaranteed.Said passive vibrating diaphragm is installed in the MP3 casing of sealing, is arranged parallel with loud speaker; It also is an acoustical generator, but itself does not possess active drive power, and it does not comprise drive system; When it relied on main loudspeaker work, the air in the compression acoustics cavity was driven and sounding.When speaker operation was sounded, the motion of the diaphragm of loudspeaker can cause air in the casing to be compressed and expands, and under the effect of air pressure change, passive vibrating diaphragm produces vibrations, promotes the outer air of casing, and it is next so just can to sound.This method is actual to be at the driving area that increases vibrating diaphragm, obtains the sense of low frequency amount with the air that promotes more volume, and simultaneously, the bore of passive vibrating diaphragm increases, and can also reduce its resonance frequency, makes loud speaker when sounding, obtains better bass submerged depth.Like this, rely on bigger passive vibrating diaphragm, even if use little loud speaker, the MP3 player also can obtain bass effect preferably.

The area ratio relation of loud speaker and passive vibrating diaphragm is: if passive vibrating diaphragm is very big, the active force that each unit are of passive vibrating diaphragm obtains is just less relatively, and the response speed of sound can be slack-off; Vibrating diaphragm is just out of control easily; Otherwise if passive vibrating diaphragm is too little, bass effect can can't represent in perfection.So preferably, the magnitude relationship of the diameter D1 of passive vibrating diaphragm and the vibrating diaphragm D2 of loud speaker is following:

95％*D2≤D1≤D2。

So the MP3 player of the utility model has enough spaces to empathize, and loud speaker is carried out well airtight, make the sense of hearing of MP3 player dull, clear, promoted tonequality greatly; Through increasing the mode of passive vibrating diaphragm, increase the driving area of vibrating diaphragm, bass effect is well represented.

Description of drawings

Fig. 1 is the positive structural representation of the utility model.

Fig. 2 is the exploded view of the utility model.

Fig. 3 is the back side perspective view of the utility model cover.

Fig. 4 is the positive perspective view of the utility model mesochite.

Fig. 5 is the utility model mesochite back side perspective view.

Fig. 6 the utility model mesochite left view.

Fig. 7 is the utility model mesochite vertical view.

Fig. 8 is the positive perspective view of the utility model main PCB A.

Fig. 9 is the back side perspective view of the utility model loud speaker lining.

Figure 10 is the perspective view of the passive vibrating diaphragm of the utility model.

Embodiment

Further specify below in conjunction with the embodiment of accompanying drawing the utility model.

A kind of MP3 player of new structure comprises: main PCB A plate 7, loud speaker 3, battery 13, shell.Wherein:

Shell, shown in Fig. 1-7, integral body is the apple shape, and said shell comprises speaker net 1, cover 2, mesochite 8, battery cover 14.Said speaker net 1 is embedded on the cover 2; Be respectively equipped with first hollow-out parts 18 and second hollow-out parts 24 on the said cover 2; Cover 2 back sides are provided with

screw column

15,16,17,19,20,21,22,23,25,26; Said mesochite 8 sides are provided with

hole slot

36,37,38,39,40,41,42,43a, 43b, 43c, 43d; The back side is provided with the cavity volume 35 of a packed battery; Cover 2 is fastenedly connected through 4 self-tapping screws with mesochite 8, and the

hole slot

32,30,29,27 that 4 self-tapping screws pass respectively on the mesochite 8 is fastened on the

screw column

17,21,22,25 at cover 2 back sides; Battery cover 14 is gripping on the mesochite 8 through the button bit design.Said cover 2, mesochite 8, battery cover 14 are once injection moulding separately.

Main PCB A plate 7, as shown in Figure 8, comprise PCB circuit board 44 and be welded to power control switch 53, USB slot 52, Micro-SD card slot 47, charging jack 50, earphone jack 51 on the PCB circuit board 44 through welding procedure; Main PCB A plate 7 is placed in the mesochite 8, and the parts at its edge pass the hole slot at mesochite 8 edges accordingly.Main PCB A plate 7 is provided with a big circular hollow-out parts 45, because the existence of this hollow-out parts 45 can be selected bigger a little loud speaker for use, the afterbody of loud speaker is passed this hollow-out parts 45, thereby can obtain good audio.Main PCB A plate 7 is provided with through

hole

46,48,54,55.

Main PCB A plate lining 6 covers on charging jack 50 and the earphone jack 51, guarantees not pressurized of jack.

Loud speaker lining 5, as shown in Figure 9, loud speaker 3 seals it off through the fastening assembling of loud speaker lining 5 and cover 2; Said loud speaker lining 5 is provided with hollow-out parts 57, is used for fitting tight loud speaker 3; Loud speaker lining 5 also is provided with through

hole

56,58,59,60,62,63; Through

hole

59 and 63 and face-piece 2 on

pillar

15,19 cooperate the guide-localization effect of playing.Screw is fastened on the

screw column

30,33,34,29 of mesochite 8 through the through

hole

56,58,60,62 on the loud speaker lining 5 respectively, and with cover 2 on corresponding screw column link together, play sealing and fixation.

Passive shake film 4, shown in figure 10, be bonded by iron plate 64 and TPU film 65.Thereby said passive shake film 4 is the fastening assemblings through loud speaker lining 5 and cover 2 to be sealed.Passive shake film 4 is horizontally disposed with loud speaker 3, and loud speaker lining 5 is provided with hollow-out parts 61, is used for assembling passive shake film 4; Passive shake film 4 is acoustical generators; But itself does not possess active drive power, and it does not comprise drive system, when it relies on initiatively loud speaker 3 work; Air in the compression acoustics cavity is driven and sounding.When loud speaker 3 work was sounded, the motion of the diaphragm of loudspeaker can cause air in the casing to be compressed and expands, and under the effect of air pressure change, passive vibrating diaphragm 4 produces vibrations, promotes the outer air of casing, and it is next so just can to sound.This method is actual to be at the driving area that increases vibrating diaphragm, obtains the sense of low frequency amount with the air that promotes more volume.Magnitude relationship between the diameter D1 of passive vibrating diaphragm 4 and the diaphragm diameter D2 of loud speaker 3 is following: 95%*D2≤D1≤D2.The vibrating diaphragm size specification of the loud speaker 3 of this execution mode is Φ 40mm, so our passive vibrating diaphragm 4 total diameter of design are Φ 40mm.Wherein the diameter of iron plate 64 is Φ 25mm, and thickness is 1.2mm.

Secondary PCBA plate 9 comprises the PCB circuit board and is welded to the volume control switch on the PCB through welding procedure; The volume of PCB circuit board major control MP3 player and the selection of song.

Volume button 10, it is assemblied on the mesochite 8, and contacts with secondary PCBA plate 9, through pushing volume button 10, plays the corrective action of volume; Said volume button 10 is a moulding.

Shift knob 12, it is assemblied on the mesochite 8, and is connected with volume control switch on the main PCB A plate 7; Said shift knob 12 is a moulding.

Lithium battery 13, it uses lithium battery for mobile phone, and it is assembled on the cavity volume 35 at mesochite 8 back sides, can freely install and remove; After battery has consumed, can battery be removed charging, also can directly on MP3, charge through charging jack 50.After battery can not re-use, the battery that the user can oneself more renew, the useful life of having improved the MP3 player.

Lanyard button 11, it is arranged on the outside of mesochite 8.

Said shell designs for 3-tier architecture, and wherein speaker net 1 is a ground floor with cover 2; Mesochite 8 constitutes the second layer; 14 of battery covers are the 3rd layer.Said 3-tier architecture shell and main PCB A plate 7, main PCB A plate lining 6, loud speaker 3; Passive vibrating diaphragm 4, loud speaker lining 5, secondary PCBA plate 9, volume button 10; Shift knob 12, lithium battery 13, lanyard button 11 passes through assembly relation; Constituted airtight relatively body structure, made that MP3 player tonequality is well guaranteed.

Being merely the utility model preferred embodiment in sum, is not the practical range that is used for limiting the utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to the technological category of the utility model.

Claims

1. the MP3 player of a new structure comprises: main PCB A plate, loud speaker, battery, shell, and said main PCB A plate comprises PCB circuit board, SD card slot, charging jack, earphone jack; Said shell comprises speaker net, cover and battery cover; Said speaker net is embedded on the cover, and said cover is provided with hollow-out parts, and said loud speaker is fixed in the hollow-out parts of cover; It is characterized in that: also comprise mesochite; Said main PCB A plate is fixed in the mesochite, and its upper end is fastenedly connected with cover, and lower end and battery cover are fastenedly connected.

2. MP3 player according to claim 1; It is characterized in that: also be provided with the loud speaker lining; Said loud speaker lining and said cover secure fit, said loud speaker lining is provided with hollow-out parts, and said loud speaker is assemblied between the hollow-out parts of hollow-out parts and cover of loud speaker lining.

3. MP3 player according to claim 2 is characterized in that: said main PCB A plate also is provided with through hole, and the afterbody of said loud speaker passes from the hollow-out parts of loud speaker lining, and penetrates the through hole of PCBA plate.

4. MP3 player according to claim 3 is characterized in that: said loud speaker lining is provided with two through holes, is provided with two protruding posts on the cover accordingly, and said protruding post can insert in the through hole on the loud speaker lining.

5. MP3 player according to claim 4; It is characterized in that: the horizontal direction at loud speaker also is provided with passive shake film; Also be provided with second hollow-out parts on said cover and the loud speaker lining respectively, said passive shake film is fastened on second hollow-out parts on the loud speaker lining.

6. MP3 player according to claim 5 is characterized in that: the outer ring of said passive shake film is the TPU film, and inner ring is an iron plate, and TPU film and iron plate are bonded together.

7. MP3 player according to claim 6 is characterized in that: the magnitude relationship of the diameter D1 of passive vibrating diaphragm and the vibrating diaphragm D2 of loud speaker is following: 95%*D2≤D1≤D2.

8. MP3 player according to claim 1; It is characterized in that: said charging jack and earphone jack are welded on the edge of main PCB A plate; Said charging jack and earphone jack are passed the through hole that the mesochite edge is offered; Also be provided with main PCB A plate lining, said main PCB A plate lining covers said charging jack and earphone jack, and is connected with the slotting shape of mesochite.

9. according to any described MP3 player of claim 1-8, it is characterized in that: the back side of said mesochite is provided with cavity volume, and said battery is placed in this cavity volume.

10. according to any described MP3 player of claim 1-8, it is characterized in that: the outside of said mesochite also is provided with the lanyard button.