1. Technical Field
The present disclosure relates to button assemblies and electronic devices using the same, and particularly to a waterproof button assembly and electronic device using the same.
2. Description of Related Art
Electronic devices such as cell phones often include a number of mechanical button assemblies. Due to the gap between the button assemblies and the housing of the device, water may enter the device.
The components of the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views.
The embodiments of the present disclosure are described with reference to the accompanying drawings.
Referring to
The at least one protruding member 214 protrudes from a lateral surface 2131 of the at least one resisting rod 213. In the embodiment, two protruding members 214 protrude from opposite lateral surfaces 2131 of one corresponding resisting rod 213.
Each protruding member 214 includes an inclined surface 215 and a resisting surface 216. The inclined surface 215 faces the inside of the housing 10 and is inclined toward the cap member 211. The resisting surface 216 may be perpendicular to the lateral surface 2131 or faces and is inclined toward the cap member 211.
The sealing member 22 and the housing 10 are integrally formed at the opening 101. The sealing member 22 is made of waterproof and elastic material. The sealing member 22 includes a main body 221 and a positioning member 222. The main body 221 is arranged in the opening 101. The positioning member 222 protrudes from the main body 221 toward an inside of the housing 10. The positioning member 222 defines a receiving hole 223. A depth of the receiving hole 223 is equal to a length of the key rod 212. The receiving hole 223 includes an opening end 224 open toward an outside of the housing 10. The key rod 212 is capable of being inserted into the receiving hole 223 through the opening end 224. When the button body 21 is pressed, the key rod 212 of the button body 21 presses the positioning member 222, causing the sealing member 22 to be deformed, thus the positioning member 222 can actuate the switch (not labeled) of the PCB (not labeled).
The sealing member 22 further defines a number of first through holes 225. Each first through hole 225 corresponds to one resisting rod 213. A distance between the resisting surface 216 of the protruding member 214 and the inner surface 2111 of the cap member 211 is less than a length of the first through hole 225. A shape of each first through hole 225 is substantially the same as a shape of corresponding resisting rod 213. In the processing of extending the resisting rod 213 through the corresponding first through hole 225, the rim of each first through hole 225 is pressed by the rim of the corresponding resisting rod 213 and the protruding member 214.
Because of the inclined surface 215, the resisting rod 213 is facilitated extension through the corresponding first through hole 225, and because the material of the sealing member 22 is elastic material, the first through hole 225 enlarges until each protruding member 214 extends through the corresponding first through hole 225. Then the sealing member 22 rebounds and the sealing member 22 is resisted by the resisting surface 216 of each protruding member 214. Thus, the button body 21 is attached to the sealing member 22. Furthermore, the resisting surface 216 of each protruding member 214 resists against the sealing member 22, causing the sealing member 22 to be elastically deformed, thus each resisting rod 213 is tightly engaged in the corresponding first through hole 225. There is no gap between the resisting rod 213 and the corresponding first through hole 225, which prevents water from entering the electronic device 1.
Referring to
Further, the resisting surface 216 of each protruding member 214 resists against the corresponding latching member 23, the latching members 23 and the sealing member 22 are elastically deformed. Thus each resisting rod 213 is tightly engaged in the corresponding first through hole 225 and the corresponding second through hole 231. There is no gap between the resisting rod 213 and the corresponding first through hole 225 or the corresponding second through hole 231, which prevents water from entering the electronic device 1. Also, the resisting surface 216 of each protruding member 214 is resisted against the corresponding latching member 23. Thus the force exerted on the latching member 23 is uniformly exerted on the sealing member 22, which prevents the sealing member 22 from being damaged.
In the aforementioned first embodiment and second embodiment, the cap member 211 includes a base 217 and a sealing portion 218. The sealing portion 218 protrudes from the base 217. The key rod 212 and the resisting rods 213 protrude from a sidewall of the sealing portion 218 away from the base 217. The sidewall of the sealing portion 218 further defines a number of first annular grooves 219 surrounding the corresponding resisting rod 213. The sealing member 22 defines a number of recesses 227 engagingly receiving the sealing portion 218 and forms a number of annular protrusions 228 extending from a bottom in the recess. Each annular protrusion 228 is tightly engaged in the corresponding first annular groove 219 of the sealing portion 218.
After the button body 21 is attached to the sealing member 22, each recess 227 of the sealing member 22 is urged to deform by the resisting surface 216, thus each annular protrusion 228 of the sealing member 22 tightly engages in the corresponding first annular groove 219 of the sealing portion 218, and the sealing portion 218 tightly engages in the corresponding second recess 227 of the sealing member 22, which further prevents water from entering the electronic device 1.
Although the present disclosure has been specifically described on the basis of the exemplary embodiment thereof, the disclosure is not to be construed as being limited thereto. Various changes or modifications may be made to the embodiment without departing from the scope and spirit of the disclosure.
Number | Date | Country | Kind |
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201210373359.4 | Sep 2012 | CN | national |