Generally speaking, a three-proof handset refers to a handheld terminal with waterproof, shockproof and dustproof effects, such as an industrial IP67 three-proof handset. Specifically, waterproof refers to the waterproof of the left and right shells of the body, including the key area, battery compartment, sensor, receiver and other functional areas; Anti-vibration refers to the rigidity of the exterior parts of the body, including the protection of keys, cover plates and internal components. Usually, if the handset can reach waterproof, it can reach the necessary dustproof effect. In order to achieve the ideal effect of three defenses, the design of three defenses handsets has strict requirements and standards in terms of structure, material and technology. The following are the design points and design methods of the three-proof handset.

Generally speaking, a three-proof handset refers to a handheld terminal with waterproof, shockproof and dustproof effects, such as an industrial IP67 three-proof handset. Specifically, waterproof refers to the waterproof of the left and right shells of the body, including the key area, battery compartment, sensor, receiver and other functional areas; Anti-vibration refers to the rigidity of the exterior parts of the body, including the protection of keys, cover plates and internal components. Usually, if the handset can reach waterproof, it can reach the necessary dustproof effect. In order to achieve the ideal effect of three defenses, the design of three defenses handsets has strict requirements and standards in terms of structure, material and technology. The following are the design points and design methods of the three-proof handset.

The structural design of the three-proof handset should be ergonomic, and the design should be optimized as much as possible on the basis of realizing product functions, so that the internal structure layout is reasonable, and the components in each functional area can run smoothly and well. Ensure the stability and sealing of the structure, and effectively guarantee the safety of internal components. In addition to the stability and safety of the internal structure, the shell design of the body is also very important, which directly guarantees the safety of the body.
In terms of material, the hard rubber of the shell designed by the three-proof handheld terminal usually adopts PC + 20% glass fiber material, etc. The soft rubber of the shell often adopts TPU material, Bayer TPU 80AP10, etc. The soft + hard double-material injection molding process is mostly selected in the process. In order to achieve the anti-fall effect, the edges are mostly soft rubber design. In the body protection, attention must be paid to the waterproof design of functional areas such as the successive shell, side keys, touch screen, front and rear shells, earphones, USB ports, acoustic devices, optical devices, battery covers, locking parts, etc. Commonly used waterproof design methods include sealing ring waterproof methods, such as hot melt adhesive, adhesive, waterproof adhesive, etc.

In addition, the design of the three-proof handset needs to carry out various necessary tests such as waterproof, pressure-proof, and saline-alkali prevention according to the use requirements. Only after passing the test can it be put into actual production and use. Different use environments have different three-defense standards, such as outdoor three-defense design, industrial-grade three-defense design, military-grade three-defense design, etc. Designers should carry out reasonable overall planning and design according to specific needs, and do a good job in details The processing of the product makes the product practical, beautiful and comfortable.