Abstract:
A bidirection-rotational conducting device has a pen cap. The pen cap can be twisted in two opposite directions, and a light emitting body cab be turned on and switch off accordingly. At the same time, a refill unit of the bidirection-rotational conducting device will extend outwardly in accordance to the illumination of the light emitting body, assisting the writing of the user. Further, the color of the light emitting body can be replaced, offering a special visual appeal. The conducting device comprises a holding unit having a holdable outer wall; a refill unit housed within said holding unit; a light unit also housed within said holding unit further including a light emitting body; and a rotational unit housed within a pen cap and connected to said holding unit by a screwed structure.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to conducting devices, more particularly to a bidirection-rotational conducting device used in a writing tool by which it can emit light and its refill can retreat, providing a user with visual appeals.  
       BACKGROUND OF THE INVENTION  
       [0002]     A light emitting pen of the prior art comprises an upper pen body having a slot, an inner pen body, a light emitting body and a circuit board controlling the switching and providing power for the light emitting body. The slot is further provided with a touch button for guiding the inner pen body slidably installed in the upper pen body; the outer wall of the inner pen body is provided with a guiding notch for the guiding. The circuit is provided with a battery and a touch sensitive switch in a position corresponding to the touch button. The light emitting body is disposed next to the circuit board and is provided with a conducting spring on the bottom thereof. A lower pen body can be coupled with the upper pen body by screwing. The upper end of the upper pen body is screw connected with a cover. Thereby, the above components form a light emitting pen of the prior art. To use the light emitting pen of the prior art, a user press the touch button in order to activate the touch sensitive switch, whereby the battery and the light emitting body are conducted. If the user pushes the touch button no more, the light emitting body will stop illuminating. Although the light emitting pen can be used as a flashlight, it cannot provide light at the same time when the user is writing. Therefore, the user still needs other light sources, such as a desk lamp and a secondary flashlight, to facilitate writing.  
       SUMMARY OF THE INVENTION  
       [0003]     The primary objective of the present invention is to provide a bidirection-rotational conducting device wherein a pen cap can be twisted in two opposite directions, and a light emitting body cab be turned on and switch off accordingly. At the same time, a refill unit of the bidirection-rotational conducting device will extend outwardly in accordance to the illumination of the light emitting body, assisting the writing of the user. Further, the color of the light emitting body can be replaced, offering a special visual appeal.  
         [0004]     To achieve above object, the present invention provides a bidirection-rotational conducting device,. The device comprises a holding unit having a holdable outer wall; a refill unit housed within said holding unit; a light unit also housed within said holding unit further including a light emitting body; and a rotational unit housed within a pen cap and connected to said holding unit by a screwed structure.  
         [0005]     The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawings. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0006]      FIG. 1  is an exploded perspective view of a bidirection-rotational conducting device of the present invention.  
         [0007]      FIG. 2  is a perspective view of the bidirection-rotational conducting device in  FIG. 1 .  
         [0008]      FIG. 3  is a perspective view of the rotational unit of the bidirection-rotational conducting device comprises in  FIG. 1 .  
         [0009]      FIG. 4  is a side cross-sectional view of the bidirection-rotational conducting device in  FIG. 1 .  
         [0010]      FIG. 5  illustrates a counter-clockwise rotation of the pen cap of the bidirection-rotational conducting device comprises.  
         [0011]      FIG. 6  illustrates a clockwise rotation of the pen cap of the bidirection-rotational conducting device comprises. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0012]     Referring to  FIG. 1  to  FIG. 3 , a bidirection-rotational conducting device  6  according to the present invention comprises a holding unit  1 , a refill unit  2 , a light unit  3 , a rotational unit  4  and a pen cap  5 .  
         [0013]     The holding unit  1  further comprises a lower ring stopper  11 , a first tube  12 , a holding part  13 , an upper ring stopper  14 , a second tube  15 , a conducting spring  16  and a spring cap  17 . The first tube  12  is provided with an axial hole  124  that has a screwed section  121  at its lower end where a gradually converged end  122  is extended downwardly. The gradually converged end  122  is attached with the lower ring stopper  11  which has a through hole  111  therein for the insertion of the first tube  12 . The inner wall of the through hole  111  of the lower ring stopper  11  is provided with a screwed section  112  for engaging a lower screwed section  121  in the first tube  12 . On the inner wall of the holding part  13 , there is an axial hole  131  for being coupled with an upper screwed section  123  on the outer wall of the first tube  12 , whereby the holding part  13  can be mounted onto the outer wall of the first tube  12 . The lower end of the holding part  13  can be supported by the top face of the lower ring stopper  11 . The upper end of the holding part  13  is further provided with the upper ring stopper  14 . The top surface of the upper ring stopper  14  is provided with an annular flange  141 , and a through hole  142  is formed within the upper ring stopper  14 , whereby the upper ring stopper  14  will be coupled with the outer wall of the first tube  12  by the through hole  142 . Above the upper ring stopper  14 , there is a second tube  15 , which second tube  15  is provided with an internal axial hole  153  having an inner screwed section  152  in a lower part thereof, whereby the second tube  15  can be connected with the first tube  12  by the engagement between the inner screwed section  152  and the upper screwed section  123 . Further, the lower end of the second tube  15  is mounted on the top face of the upper ring stopper  14 . The annular flange  141  of the upper ring stopper  14  is connected to the lower end of the second tube  15 , whereby the first tube  12  and the second tube  15  are united. The upper outer wall of the second tube  15  is provided with an outer screwed section  151 , and the axial hole  153  of the second tube  15  houses the conducting spring  16 . On top of the conducting spring  16  there is a spring cap  17  that has a through hole  172 . The conducting spring  16  is retained by an annular groove  171  formed around the upper end of the spring cap  17 . The set of the axial hole  124 , the axial hole  153  and the through hole  172  forms an elongated internal space within the holding unit  1  for the insertion of the refill unit  2 .  
         [0014]     The refill unit  2  further comprises an upper tube  21  and a lower tube  22 . An inwardly converged neck  212  is extended from the lower end of the upper tube  21 . A hole  211  is formed at where the upper tube  21  and the inwardly converged neck  212  are connected for the insertion of a positive-polarity bracket  312 . The positive-polarity bracket  312  has an arced head that can be attached onto the outer wall of the neck  212 . Further, the outer wall of the neck  212  is provided with an annular projection  213  for retaining the spring cap  17  at the neck  212  and at the same time confining the arced head of the positive-polarity bracket  312 . The inwardly converged lower tube  22  is extended from the lower end of the neck  212 . A refill  23  is mounted at the lower end of the lower tube  22 . The internal space from the upper tube  21  to the lower tube  22  defines an axial hole for housing the light unit  3 .  
         [0015]     The light unit  3  further comprises a light-emitting body  31 , a supporting unit  32 , a set of batteries  33  and a battery cap  34 . A negative-polarity bracket  311  and a positive-polarity bracket  312  are extended from the top face of the light-emitting body  31 . The free end of the negative-polarity bracket  311  is bent to form a vertical structure, whereas the free end of the positive-polarity bracket  312  is bent to form the arced head. Each of the free ends of the brackets is provided with a supporting unit  32  having an annular stopper  321 . Each of the annular stoppers  321  further includes a guiding notch  3212  and a hole  3211  at one end of the associated guiding notch  3212 , which hole  3211  is for the insertion of the negative-polarity bracket  311 , whereby the vertically bent head at the free end of the negative-polarity bracket  311  will situate in one of the guiding notches  3212  of a corresponding supporting unit  32 , for securing at the negative terminal of the set of batteries  33 . The set of batteries supplies the power of the light emitting body. An inwardly converging neck portion  322  is extended from the lower end of the annular stoppers  321 , and the neck portion  322  in turn has a downwardly extended thin rod  323  between the negative-polarity bracket  311  and the positive-polarity bracket  312 . The thin rod  323  is further secured by the annular stopper  321  of the supporting unit  32  on bottom face of the upper tube  21  of the refill unit  2 , at a predetermined location. Thereby, the light emitting body  31  will be retained within the lower tube  22  of the refill unit  2 . A battery cap  34  is mounted on the set of batteries  33  disposed within the upper tube  21  of the refill unit  2 .  
         [0016]     The rotational unit  4  further comprises a retaining sleeve  41 , a connecting portion  42 , an A core component  43 , a B core component  44  and a shell  45 . The top surface of the retaining sleeve  41  is extended with a hollow column  411  with an internal receptacle. The column  411  further includes a retaining hole  412 , and the lower inner all thereof is provided with a screwed section  413 . The column  411  can be mounted onto the base  421  of a connecting portion  42 . The top face of the base  421  is provided with two opposite projections  422  and a guiding column  423  between the projections  422 . Two lateral sides of the guiding column  423  are provided with respective guiding grooves  424 . Each of the arced projections  422  is provided with a through hole  427  going though the base  421 , and the top surface of the guiding column  423  is provided with an annular stopper  425  with side projected pieces  428 . Two hooked heads  426  are formed on the top surface of the annular stopper  425 , in opposite positions. The insertion tube  443  of the B core component  44  is capable of being inserting through one of the through holes  427  at the lower terminal of the left guiding groove  424 , whereas the metallic insertion tube  433  of the A core component  43  is capable of being inserting through one of the through holes  427  at the lower terminal of the right guiding groove  424 . The metallic insertion tube  433  and the insertion tube  443  respectively have springs  434 ,  444  and go through two retaining holes  412  on the retaining sleeve  41  at the same time. On the top of the metallic insertion tube  433 , there is a guiding column  430  with a ring plate  431 . The outer wall of the ring plate  431  is bulged with an arced guiding rail  432  that have a dipped retaining point  429  at the upper terminal thereof for securing the refill  23  in its extended configuration. A guiding column  440 , a ring plate  441  and a arced guiding rail  442  are extended upwardly on the top of the B core component  44 , for the sliding of the guiding columns  430 ,  440  along the annular guiding grooves  424 . The spring  434 ,  444  respectively of the A core component  43  and the B core component  44  can support and confine the A, B core components  43 ,  44  within the guiding groove  424  of the guiding column  423 . Therefore, the connecting portion  42 , the A core component  43 , the B core component  44  can be contained within the shell  45 . The inner doom of the shell  45  is provided with a supporting portion  451  that will follow the track of the guiding rails  432 ,  442  and be eventually retained by the retaining point  429 , as the shell  45  is rotated. Thereby, the shell  45  can definitely control the sliding motion of the A, B core components  43 ,  44  simultaneously, so as to achieve the retreat and the extension of the refill  23  about the pen nozzle  122 , as shown in  FIG. 3 . The lower inner wall of the shell  45  us for enclosing the column  411 , and the hooked heads  426  of the connecting portion  42  can go through the through holes  452  on the shell  45 . Thereby, as the hooked heads  426  are pushed inwardly, the shell  45  and the retaining sleeve  41  will be departed, whereby the rotational unit  4  will be stably confined within the pen cap  5 . The outer wall of the pen cap  5  is provided with a pen clip  51 . The pen cap  5  and the holding unit  1  are combined by the engagement between the screwed section  413  of the retaining sleeve  41  and the screwed section  151  of the second tube  15 , as shown in  FIG. 2 .  
         [0017]     Referring to  FIG. 4 , the bidirection-rotational conducting device of the present invention  6  in an unused situation has the supporting section  451  of the shell  45  situating at the bottom of the arced guiding rails  432 ,  442 , whereby the metallic insertion tube  433  and the insertion tube  443  will be held in their respective original locations. Meanwhile, the refill unit  2 , supported by the conducting spring  16 , is located on the inner upper wall of the holding unit  1 . Further, there exists a gap between the battery cap  34  and the insertion tubes  443 ,  443 , thereby prohibiting the formation of a conducting loop by the metallic insertion tube  433 , the spring  434 , the retaining sleeve  41 , the second tube  15  and the positive-polarity bracket  312  (the positive-polarity bracket  3   12  is thus connected to the second tube  15 ) and the supply of power from the batteries  33  to the light emitting body  31 . At the same time, the refill  23  is retreated into the first tube  12 .  
         [0018]     Referring to  FIG. 3  and  FIG. 5 , as the pen cap  5  of the bidirection-rotational conducting device is twisted in the counter-clockwise direction, it will follows the arced track of the guiding rail  432  at the lower end of the supporting portion  451  on the inner wall of the shell  5 , resulting in a downward shift of the A core component and a according contraction of the spring  434  on the metallic insertion tube  433  (as shown in  FIG. 3 ). Thereby, the metallic insertion tube  433  will be brought into contact with the battery cap  34 , and the metallic insertion tube  433 , the spring  434 , the retaining sleeve  41 , the second tube  15 , conducting spring  16 , the spring cap  17  and the positive-polarity bracket  312  will form a conducting loop. The light emitting body  31  will thus be powered by the batteries  33  and start to illuminate.  
         [0019]     Referring to  FIG. 3  and  FIG. 6 , as the pen cap  5  of the bidirection-rotational conducting device is twisted in the clockwise direction, it will follows the arced track of the guiding rail  442  at the lower end of the supporting portion  451  on the inner wall of the shell  45 , resulting in a downward shift of the B core component and according contraction of the spring  444  on the insertion tube  443  (as shown in  FIG. 3 ). Thereby, the insertion tube  443  will be brought into contact with the battery cap  34 , pushing the battery cap  34  and the second tube  15  downward and consequently contracting the conducting spring  16 . This will result in the extension of the refill  23  from the pen nozzle  122  of first tube  12 . The lower end of the supporting portion  451  on the inner wall of the shell  45  will be locked with the retaining point  429  of the guiding rail  432 , as shown in  FIG. 3 . Therefore, the motion of the shell  45  can indeed control the sliding motion of the B core component  44 .  
         [0020]     The present invention is thus described, and it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.