The mp3,mp4 mould maker Shenzhen,DHY mould

I. MP3, MP4 ID design

The first step of design is to define its external structure. This step is very important, external structure determines success or failure of the product, relates to professional knowledge in marketing, aesthetics, manufacturing technology which shall be considered comprehensively. During design thorough acquaintance of relative products in the market and current manufacturing technology shall be achieved at first to avoid any serious design fault in mould fabrication owing to failure in some details. Appearance design shall be fashionable, elegant and win users’ fondness. The most important step is design of press keys. Since there were no function keys for recording and repeating, preliminary products have only 6 keys: ON, OFF, Forward, Backward, Volume up/down. Thus it was easy to arrange these keys. Some old phones adopted compound keys, for example, one typical type “Goose egg” of Samsung phones had several disadvantages although it has very elegant appearance: 7# battery was adopted which can last only for 2-3 hours, compound keys adopted provided poor usability because of complex menus.

II. Selection of MP3, MP4 batteries

Current products on the market mainly powered by two types of batteries: dry battery, built-in secondary battery. For MP4, MP3 Player, their batteries are mainly of the following 4 types: conventional dry battery；chewing-gum battery（Ni-MH）；built-in Ni-MH, lithium battery. Dry batteries are divided into 7# and 5#. Using 7# ordinary dry battery will short time play time, using 5# battery will inevitably result in thick and large phone body, using lithium battery will result in high cost. Built-in chargeable battery design is the option of many factories, it for sure provides convenience to users and save the demand to buy batteries. However, it still leaves two problems: First: when the battery runs out, it will be very troublesome if there is no charging condition; Second: The biggest problem is that the battery has limited service life and it will be troublesome after the battery runs out in one or two years. Only phone manufacturer can change the batteries for users. Chewing-gum battery has small size and large capacity without any memory effect, thus a favorable phone structure can be designed. However, special charger is needed for it. All in all, the battery to be used shall be determined according to market demand.

III. General structure and function of MP3, MP4

1. Recording key 2. Delete key 3. Stop key 4. Sound effect key 5.Repeat key 6. Play key 7.Volume down 8. Volume up 9. Headset jack 10. Keyboard lock 11. Fast forward key 12. Fast backward key 13. LCD screen 14. Microphone recording orifice 15.SMC card return key 16.USB connecting port 17.SMC card slot 18. Battery chamber 19. Camera

IV. MP3, MP4 mould

Offer of MP3 or MP4 moulds by Japanese, Taiwan, Hongkong mould plants in early years was normally more than 100,000 yuan RMB, and offer made by mainland plants is only 60-80 thousand yuan RMB. Although our price is relatively low, but the procedure can not meet requirements; Along with more and more fierce market competition, MP3，MP4 mould cost decreases. Many plants use male mould, and normally 3 to 4 sets of moulds are needed: one set for front and back shell, one set for battery cover, all press keys and accessories, one set for transparent lens. Specific moulds are defined according to practical size of products.