Housing mechanism for electronic device

[0001] 1. Field of the Invention

[0002] The present invention generally relates to electronic devices and, more particularly, to a housing mechanism for an electronic device configured (i.e., structured and arranged) for preventing water or dust from invading the electronic device.

[0003] 2. Description of Related Art

[0004] With the development of wireless communication and information processing technologies, portable electronic devices such as notebook computers, mobile phones, and personal digital assistants (PDAs) are now in widespread use. These electronic devices enable consumers to enjoy high technology services anytime and anywhere.

[0005] Most contemporary electronic devices have little protection against water or dust. If the electronic devices drop into water, the electronic devices cannot be used because water may erode electronic elements of the electronic devices and cause short circuits. Some electronic devices have rubber plugs to protect against water or dust. However, the rubber plugs may easily become lost or fall out as they are small.

[0006] Therefore, a new housing mechanism for an electronic device is desired in order to overcome the above-described shortcomings.

[0007] In one aspect, a housing mechanism for an electronic device includes a cover and a frame. The cover has a cover body, a sealing element, and a sidewall formed around the cover body. A surface of a distal end of the sidewall is recessed thereby forming a receiving slot therein. The sealing element has a connecting portion and a positioning portion connected to the connecting portion. The connecting portion is fixedly received in the receiving slot of the cover. The frame has a positioning slot defined therein and the positioning portion of the sealing element is configured for reception in the positioning slot of the frame when the cover is closed to the frame.

[0008] Other advantages and novel features will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0015] Referring to FIG. 1, in a preferred embodiment, a housing mechanism 8 for an electronic device, such as a mobile phone, includes a cover 10 and a frame 20. An elastic sealing element 12 is integrally formed with the cover 10. For describing the structure of the housing mechanism 8, FIGS. 1-2 and 5 show exploded views of the housing mechanism 8, though the cover 10 and the elastic sealing element 12 are actually formed together.

[0016] Also referring to FIGS. 1-2 and 4-5, the cover 10 includes a cover body 11, the elastic sealing element 12, and a sidewall 13 formed around the cover body 11. The cover body 11 is a rectangular board in shape. A plurality of hooks 14 is formed on the cover body 11 adjacent to the sidewall 13. An inner surface of a distal end of the sidewall 13 away from the cover body 11 is recessed thereby forming two inclined surfaces 162. The two surfaces 162 are inclined at an angle relative to each other thereby forming a receiving slot 16 therebetween.

[0017] The sealing element 12 is a substantially quadrate hollow element and has a connecting portion 122 and a positioning portion 124 connected to the connecting portion 122 in a cross section thereof. The connecting portion 122 has two connecting surfaces 126. The two connecting surfaces 126 are inclined at an angle relative to each other. The connecting portion 122 is formed in the receiving slot 16 of the cover 10. Each connecting surface 126 abuts one corresponding inclined surface 162 of the cover 10. The connecting portion 122 and the positioning portion 124 are inclined at an angle relative to each other. The positioning portion 124 is substantially pillar-shaped. The sealing element 12 may advantageously be made of an elastic thermoplastic, such as thermoplastic urethanes (TPU). The sealing element 12 can also be made of elastic rubber.

[0018] The frame 20 is rectangular in shape. The frame 20 has a positioning slot 26 defined therein. The positioning slot 26 has a substantially V-shaped cross section. The positioning portion 124 of the sealing element 12 is configured for reception in the positioning slot 26. A plurality of projections 24 is formed on the frame 20 adjacent to the positioning slot 26. Each projection 24 defines a groove 242 therein. Each hook 14 is configured for reception in one corresponding groove 242.

[0019] The cover body 11, the sidewall 13, and the frame 20 may advantageously be made of a plastic material. The plastic material can be polyvinyl chloride, polyethylene terephthalate, acrylonitrile-butadiene-styrene, polycarbonate, polyimide, liquid crystal polymer, polyetherimide, polyphenylene sulfide, polysulfone, polystyrene, glycol-modified polyester, polypropylene, or any desired combination thereof.

[0020] Referring to FIGS. 3-4, in assembly, the positioning portion 124 of the sealing element 12 is deformed and pressed into the positioning slot 26 of the frame 20. The cover 10 and the frame 20 are locked together by means of the hooks 14 and the projections 24. In this way complete assembly of the housing mechanism 8 is achieved and a sealed inner space in which electronic components of the electronic device are accommodated is formed and surrounded by the sealing element 12 which prevents water or dust from invading the housing mechanism 8.

[0021] An exemplary method for making the housing mechanism 8 is provided. Firstly, a cover 10 is molded in a first mold by injection molding. The cover 10 has a receiving slot 16 defined therein and a plurality of hooks 14 formed thereon adjacent to the receiving slot 16. Secondly, an elastic sealing element 12 is molded in the receiving slot 16 of the cover 10 by injection molding. Thirdly, a frame 20 is molded in another mold by injection molding thus obtaining a housing mechanism 8 for an electronic device.

[0022] It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples here before described merely being preferred or exemplary embodiments of the invention.