1. Technical Field
The present disclosure relates to a testing apparatus.
2. Description of Related Art
Electronic apparatus, such as computers, often need various tests, such as a vibration test or an impact test. A vibration absorbing plastic gasket is often attached to a bottom plate of the computer, for absorbing the vibration generated by the computer. The vibration absorbing plastic gasket is often tested to ensure the stability of the computer. When a vibration absorbing plastic gasket is tested, the computer is placed on a testing desk. A tension meter is engaged in a hole in a front plate of the computer, to move the computer relative to the testing desk. However, if there is no hole defined in the front plate, the tension meter cannot be engaged with the computer. Therefore, an improved testing apparatus may be needed within the art.
Many aspects of the embodiments can be better understood with references to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one.
The securing member assembly 10 includes a retaining panel 11, a screw pole 12, a resilient member 13 engaged with the screw pole 12, two securing panels 14, and two mounting members 15. The retaining panel 11 defines two transverse sliding slots 112. In one embodiment, the retaining panel 11 is a rectangle, and the two transverse sliding slots 112 are parallel to each other. A clipping portion 114, with a clipping ring 1141, is located on the center of the retaining panel 11. The clipping portion 114 is located between the two transverse sliding slots 112. In one embodiment, the clipping ring 1141 is substantially perpendicular to the retaining panel 11.
Each of the two securing panels 14 defines two fixing holes 141 and a securing hole 143. Two positioning members 40 are engaged in the two fixing holes 141, respectively. Each of the two positioning members 40 includes a head 41 and a positioning post 43 connected to the head 41. In one embodiment, a width of each of the two transverse sliding slots 112 is greater than a diameter of the positioning post 43, and is less than a diameter of the head 41. A plastic gasket 145 is attached to each of the two securing panels 14, for increasing friction between the two securing panels 14 and the two side plates 31. In one embodiment, the plastic gasket 145 is a rectangle.
Each of the two mounting members 15 defines an inner screw thread 151 corresponding to the screw pole 12. The tension meter 20 includes a hook 21 can be engaged with the clipping ring 1141.
In use, the two securing panels 14 are moved, and the two positioning members 40 are slid in the two transverse sliding slots 112, until a distance between the two securing panels 14 is greater than a distance between the two side plates 31. The electronic device 30 is located between the two securing panels 14. The two securing panels 14 are moved towards the electronic device 30, until each of the plastic gaskets 145 are attached to the two side plates 31. The two mounting members 15 are engaged with the screw pole 12 and attached to the two securing panels 14, for preventing the two securing panels 14 from moving away from the two side plates 31. The resilient member 13 is deformed, with the two securing panels 14 being pressed on the resilient member 13. The hook 21 is engaged with the clipping ring 1141. The tension meter 20 is moved in a direction substantially perpendicular to the retaining panel 11, and the electronic device 30 is moved relative to a testing desk. Therefore, a vibration absorbing plastic gasket (not shown) attached to a bottom surface of the electronic device 30, can be tested.
A first coefficient of friction, between a plastic and a wood, is 0.6, and a second coefficient of friction, between the plastic and a steel, is 0.45. A weight of the electronic device 30 is 20 kg, and the first coefficient of friction, between a plastic vibration absorbing plastic gasket and the wood testing desk, is 0.6. Thus, a tension F≧Nu=20×9.8×0.6N=117.6N, can pull the electronic device 30. The second coefficient of friction, between the plastic gasket 145 and each of the two side plates 31 made of steel, is 0.45, so a pressure f≧F/2u=117.6N/(2×0.45)=130.7N, and the pressure f is the each of the two mounting members 15 is pressed on the two securing panels 14. Therefore, the pressure f is greater than the tension F, and the two securing panels 14 cannot be disengaged from the two side plates 31 when the electronic device 30 is pulled.
In disassembly, the two mounting members 15 are disengaged from the two securing panels 14. The resilient member 13 is released to disengage the two securing panels 14 from the two side plates 31. Thus, the electronic device 30 can be detached from the securing member assembly 10.
It is to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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2011 1 0402877 | Dec 2011 | CN | national |
Number | Name | Date | Kind |
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20080282767 | Ido | Nov 2008 | A1 |
20130145860 | Qin et al. | Jun 2013 | A1 |
20130167670 | Liu | Jul 2013 | A1 |
20130168520 | Liu | Jul 2013 | A1 |
Number | Date | Country | |
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20130145860 A1 | Jun 2013 | US |