Handheld terminal equipment that can switch the extended handset

Abstract

The invention provides a waterproof anti-collision expanded connecting structure of handheld terminal equipment. The waterproof anti-collision expanded connecting structure comprises a host machine and a sub-machine, wherein mutually-adapted guide rail structures are arranged on the housings of the host machine and the sub-machine to be butted, and the inner parts of the guide rail structures are provided with connecting pieces which are used for circuit and communication connection of the host machine and the sub-machine. The host machine has basic functions of voice communication, satellite positioning, pickup, taking a picture, bluetooth and the like, and the sub-machine can be arbitrarily switched into expanded sub-machines with various functions as needed, such as printers, POS (Point-of-Sale) card readers, identity recognizers, fingerprint readers, bar code readers and the like. Meanwhile, according to various usages, the host machine can arbitrarily select different sub-machines to form handheld terminal equipment which is suitable for various fields of public security, electric power, banks, logistics, finance, railway and the like. The waterproof anti-collision expanded connecting structure has the characteristics of firm and stable combination, small size, one-hand operation, one machine for multiple purposes, convenience in carrying and the like.

Description

technical field [0001] The present invention relates to a handheld terminal device, in particular to an extended connection structure suitable for freely superimposing functions of various waterproof and impact-resistant handheld terminal devices. Background technique [0002] The current various handheld terminal devices are usually small in size for easy portability, and do not have various extended peripherals, such as printers, ID readers, fingerprint readers, barcode readers, etc. If you need to use the above-mentioned extension devices When it comes to functions, it is usually to add Bluetooth or wireless communication modules, and then access the above-mentioned peripherals such as printers, ID readers, fingerprint readers, barcode readers, etc., which is very inconvenient to use, and some existing devices also have The handheld terminal equipment with portable printer has unreasonable structural design, large volume and heavy weight, and is extremely inconvenient to ...

AI Technical Summary

Problems solved by technology

[0002] The current various handheld terminal devices are usually small in size for easy portability, and do not have various extended peripherals, such as printers, ID readers, fingerprint readers, barcode readers, etc. If you need to use the above-mentioned extension devices When it comes to functions, it is usually to add Bluetooth or wireless communication modules, and then access the above-mentioned peripherals such as printers, ID readers, fingerprint readers, barcode readers, etc., which is very inconvenient to use, and some existing devices also have Handheld terminal devices with portable printers have unreasonable structural design, large volume and heavy weight, and are extremely inconvenient to carry

[0003] In addition, the current various handheld portable terminal devices usually have waterproof and impact-proof requirements. The usual waterproof method is to add a waterproof sealing ring between the upper and lower casings. However, if the sealing ring adopts ordinary sealing The waterproof level that can be achieved by this method is low, which cannot meet the purpose of being used on some portable devices with higher waterproof level requirements; and the anti-collision method usually uses elastic materials such as additional protective rings to increase the cushioning force of the shell, or to increase the cushioning force of the shell. body thickness to increase the strength of the shell, or use the above means at the same time to achieve

At the same time, when the traditional shell waterproof structure is adopted, the key switch (dome switch) generally can only be directly installed on the outside of the shell and then connected to the internal circuit board, which does not have the function of waterproofing. If it is used in a humid environment, The dome switch will turn on the power supply, causing malfunctions such as misoperation or key failure. If the dome switch is installed inside the housing, and then operated outside the housing by means of a key connecting rod, its sensitivity will be greatly reduced, not only Components such as button connecting rods are easily damaged, and the exterior of the whole machine still needs special waterproof treatment, and the production cost is also high

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