Abstract:
A detecting device for performing fatigue tests on a pivoting piece includes a clamping module and an actuating module. The clamping module clamps the pivoting piece. The actuating module includes an elastic actuating shaft abutting the clamping module and a resilient member mounted in the elastic actuating shaft. The resilient member is adapted to push forward against spring pressure and retract by the release of spring tension so as to achieve cyclic movements in the pivoting piece.

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to detecting devices for performing fatigue tests. 
     2. Description of Related Art 
     Various types of tests are performed on electronic devices. One of the tests is used to perform fatigue tests on movable members of the electronic members. A typical fatigue test device includes an actuating tool which automatically and repeatedly presses buttons of the electronic devices. Then operators detect whether the buttons are worn out after being repeatedly used. However, such a fatigue test device can not perform fatigue tests to other movable members rather than the buttons, such as a pivotable plate. 
     Therefore, there is room for improvement within the art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       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. 
         FIG. 1  is an exploded view of a detecting device according to an embodiment. 
         FIG. 2  is another exploded view of the detecting device of  FIG. 1 . 
         FIG. 3  illustrates the internal structure of an elastic actuating shaft of  FIG. 2 . 
         FIG. 4  is an assembled view of the detecting device of  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION 
     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. 
     Referring to  FIGS. 1 and 2 , an embodiment of a detecting device includes a base module  10 , an actuating module  20 , and a clamping module  90 . The detecting device is used to perform fatigue tests on a pair of pivotable pieces  102  of a shell  100 . The clamping module  90  includes a connecting rod  30 , a pivot shaft  40 , a pair of nuts  50 , a holder  60 , a pair of clamping members  70 , and a pair of fastening members  80 . 
     The base module  10  includes a base panel  12  and a perpendicular support beam  14  attached to the base panel  12 . A vertical slot  141  is defined in the support beam  14 . 
     Referring to  FIG. 2 , the actuating module  20  includes an elastic actuating shaft  22 , a securing member  24 , a mounting block  26 , and a holding block  28 . The width of the mounting block  26  is substantially equal to the width of the vertical slot  141 . The holding block  28  is wider than the mounting block  26 . The mounting block  26  abuts the securing member  24  and the holding block  28  and is located between the securing member  24  and the holding block  28 . The elastic actuating shaft  22  is partially received in the securing member  24 , the mounting block  26 , and the holding block  28 . One end of the elastic actuating shaft  22  protrudes from the securing member  24 , the other end protrudes from the holding block  28 . 
     Referring to  FIG. 3 , in one embodiment, the elastic actuating shaft  22  includes a tubular case  221 , a separation piece  223  movably mounted in the tubular case  221 , a spring  225  mounted in the tubular case  221 , and a movable post  227  connected to the spring  225 . The spring  225  includes a first end attached to the separation piece  223  and a second end attached to the movable post  227 . An air injection device (not shown) is utilized to actuate the elastic actuating shaft  22 . The air injection device can rhythmically inject air into the tubular case  221 . When the air pressure at a first side of the separation piece  223  exceeds the air pressure at the second side of the separation piece  223 , the separation piece  223  moves the movable post  227  axially and compresses the spring  225 . When the air injection device stops injecting air into the tubular case  221 , the spring  225  resumes its original state and the movable post  227  moves back to its original position. 
     A mounting slot  32  is defined in a rear side of the connecting rod  30  for mounting the movable post  227 . A pivot slot  34  is defined in a front side of the connecting rod  30  for mounting the pivot shaft  40 . The mounting slot  32  is substantially perpendicular to the pivot slot  34 . The holder  60  includes a rectangular main body  61  and a pair of parallel mounting pieces  64  extending from the rectangular main body  61 . The distance between the pair of mounting pieces  64  is substantially equal to the thickness of the connecting rod  30 . The thickness of the connecting rod  30  is substantially equal to the length of the pivot slot  34 . A pivot hole  641  is defined in each of the pair of mounting pieces  64  corresponding to the pivot slot  34 . A horizontal slot  62  is defined in the rectangular main body  61  for receiving the pair of clamping members  70 . Each of the clamping members  70  includes a mounting rod  72  and a pair of clamping pieces  74  extending perpendicularly from the mounting rod  72 . Each piece of the clamping pieces  74  is parallel to each other. The distance between the pair of clamping pieces  74  is substantially equal to the thickness of each of the pair of pivotable pieces  102 . A securing hole  741  is defined in one of the pair of clamping pieces  74 . The mounting rod  72  includes a threaded end whereby the rod  72  can be fixed to the holder  60 . 
     Referring to  FIG. 4 , in assembly, the front end of the connecting rod  30  is located between the pair of mounting pieces  64 . The pivot holes  641  are aligned with the pivot slot  34 . The pivot shaft  40  is engaged in the pivot holes  641  and the pivot slot  34 , thereby pivotably attaching the connecting rod  30  to the holder  60 . The threaded ends of the pair of clamping members  70  extend into and protrude from the horizontal slot  62  and are secured in place by the pair of nuts  50 . The shell  100  is placed on the base panel  12 . Each one of the pair of pivotable pieces  102  is clamped in one of the pieces of the clamping pieces  74 . The pair of fastening members  80  in the securing holes  741  engage and hold the pieces  102  in place. The elastic actuating shaft  22  extends into the vertical slot  141 . The mounting block  26  is engaged in the vertical slot  141 . The holding block  28  abuts a first side of the support beam  14 . The securing member  24  abuts a second side of the support beam  14 . The actuating module  20  is secured to the support beam  14  at a desired height where the movable post  227  is aligned with the mounting slot  32 . The movable post  227  is securely mounted in the mounting slot  32 . 
     During the test, the air injection device injects air into the tubular case  221 . The separation piece  223  is pushed axially. The spring  225  is compressed and pushes the movable post  227  and the connecting rod  30 . The motion of the rod  30  causes the pivotable pieces  102  to rotate in relation to the shell  100 . The connecting rod  30  is rotated slightly relative to the holder  60 . Then the air injection device stops injection air into the tubular case  221 . The spring  225  is released and resumes to its original state and the movable post  227  moves back to its original position. The connecting rod  30  moves together with the movable post  227 . The holder  60  and the pair of clamping members  70  are pulled back by the connecting rod  30 , thereby the pair of pivotable pieces  102  rotate back to their original positions. In this way, the pair of pivotable pieces  102  are repeatedly rotated back and forth for the desired period of time in order that the operators can determine whether the pair of pivotable pieces  102  pass the fatigue test. 
     In one embodiment, the actuating module  20  can use other resilient members to push the connecting rod  30 . 
     While the present disclosure has been illustrated in detail in one or more embodiments, it is not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications within the spirit and scope of the present disclosure will readily appear to those skilled in the art, and the present disclosure is not to be limited to the specific details and illustrative examples shown and described.