Abstract:
The present invention relates to a correction tape roll device to be used for correcting erroneous or omitted letters and the like wherein securing the lateral distance between shafts for at least a pair of rolls is unnecessary, so that the spatial availability can be increased and thus the size of the device can be reduced, as compared to the conventional device in which the corresponding distance was relative large and so the device became voluminous.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a correction tape roll device and more particularly to a correction tape roll device which is able to correct an erroneous description by covering it with correction paste in dry form fallen off a coated tape through a pressing operation. 
     BACKGROUND OF THE INVENTION 
     Generally a correction tape roll device includes a case in a certain form with openings, at least a pair of rolls provided rotatably within the case, a coated tape wound around one of the rolls and a tape guide projecting outward through an opening for guiding the movement of the coated tape and for allowing the coated tape to be pressed on paper as required. 
     A conventional correction tape roll device is described by referring to FIG. 1 which shows the exploded perspective view of one example of a conventional correction tape roll device. 
     As seen in FIG. 1, the correction tape roll device  100  is equipped with a case  110 , which is formed, at the front and rear ends, with openings  111  and  112  respectively. Further, the case  110  is formed with an engaging hole  113  at a position on the top side and formed with an observation hole  114  on one side surface so as to allow the examination of the used amount for the coated tape. Further, a clip  115  is also provided on a rear side surface to be fastened to a pocket or the like if required. The case  110  so constructed is intended to retain the coated tape  120  and various other accessaries within it in a protective manner and also to be easily dismantled when required. 
     The main body  130  shown below the case  110  in FIG. 1 is provided with a tape guide  131  to guide the movement of a coated tape  120 . The tape guide  131  projecting lengthily forward is inserted in the case from the rear opening  112  to be protruded to the outside through the front opening  111  at the time of assembling. The tape guide  131  can also function to help the coated tape  120  to be pressed during a correction work. As such a tape guide  131 , a quality material with excellent elasticity should be used. A jacket  132  is shown in front of the tape guide  131 . This jacket  132  has an opening  133  through which the tape guide  131  can extend and also functions to prevent the coated tape  120  from straying aside by contacting the tape guide  131 . The tape guide  131  is formed with a roll mounting section  134  at its rear end. An elastic arm  135  is provided at a site around the circumference of the roll mounting section substantially in circular form. The elastic arm  135  is designed to detachably mount the main body  130  on the case  110  and provided with an engagement jaw  136  to secure the main body  130  by engaging with the engagement hole  113 . 
     On the opposite sides of the main body  130  or the roll mounting section  134  to be more exact, the first and second rolls  140  and  150  are provided rotatably. As shown in the drawing, the first roll  140  is formed, on its one side, with the first gear  160  which has the first~shaft  162  for mounting the first roll  140 . This first roll  140  is the part on which unused coated tape  120  is wound. In addition, the roll mounting section  134  is provided with the second shaft  172  on which the second roll  150  is fitted in rotatable manner on the opposite of the roll mounting section  134 , wherein the second gear  170  is coupled to the other end of the second shaft  172 . The second roll  150  is used to wind a blank tape  122  after correction service. 
     In other words, after the first shaft  162  is mounted with the first gear and first roll  160  and  140 , and the second shaft  172  is mounted with the second gear and second roll  170  and  150 , the coated tape  120  is placed on the end of the tape guide  131 , the jacket  132  is fitted thereon and then the pre-assembly is inserted in the case  110  under the state of the elastic arm  135  of the main body  130  slightly pressed, so that the engagement jaw  136  may be, engaged with the engagement hole  113  in the case  100  to complete the assembly. In this state, the tip end of the tape guide  131  is protruded through the front opening  111  and thus the correction tape device  100  is ready for use. In the case of no use, the front tip  111  can be pulled forward as shown in two-dot-chain line in FIG. 1 to protect the coated tape  120  against the environmental interference. 
     The disadvantage with the conventional correction tape roll device is that the need for securing enough lateral distance between the first shaft  162  and second shaft  172  results in relative large body  130  and case  110 . In addition, there is another disadvantage that the correction work is possible only in one direction. 
     SUMMARY OF THE INVENTION 
     The object of the invention is to provide a correction tape roll device wherein securing the lateral distance between shafts for at least a pair of rolls is unnecessary, so that the spatial availability can be increased and thus the size of the device can be reduced. 
     The above object is achieved according to an aspect of the invention by a correction tape roll device with a first and second rolls for winding a tape therearound, comprising: a case of a particular shape open at least one side through an opening having a predetermined size; a main body including a tape guide protruding from said opening, the tape guide being formed, at one side, integrally with a roll mounting section, the tape guide being bent to form a stepped section between the tape guide and the roll mounting section, said stepped section being formed with a through-opening; a first gear formed rotatably at one side of the roll mounting section, the first gear being connected to the first roll; a second gear formed rotatably at the other side of the roll mounting section, the second gear being connected to the second roll; and a power transmitting gear unit consisting of an upper and lower stage gears to transmit the rotation of said first gear to said second gear for causing the rotation of the second gear, the lower stage gear being engaged with the first gear and the upper stage gear being engaged with the second gear through said through-opening in said main body. 
     Preferably, said first and second gears are arranged coaxial to each other on opposite lateral sides of the roll mounting section. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 shows the exploded perspective view of an example of a correction tape roll device according to prior art, 
     FIG. 2 shows the exploded perspective view of a correction tape roll device according to an embodiment of the invention, 
     FIG. 3A shows the perspective partial view of a correction tape roll device according to an embodiment of the invention illustrating the manner of a power transmission gear unit mounted in the main body, 
     FIG. 3B shows the perspective view of FIG. 3A as viewed from the backside, 
     FIG. 4A shows the front view of the main body including the first and second roll as the main part of the correction tape roll device according to the invention, 
     FIG. 4B shows the sectional plan view of the main body including the first and second roll as the main part of the correction tape roll device according to the invention, 
     FIG. 5A shows the sectional plan view of the correction tape roll device according to the invention and 
     FIG. 5B shows the cross sectional view of a significant part illustrating the coupling of the power transmission gear unit. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     A preferred embodiment of the invention will be described in detail below by referring to the accompanying drawings of FIGS. 2 through 5. 
     As shown, a correction tape roll device  200  according to the invention is provided with a case  210 , and also formed with openings  211  and  212  at the front and rear ends, wherein the openings  211  and  212  are communicated with each other. The case  210  is formed likewise with an engagement hole  213  on its top side. 
     The correction tape roll device  200  according to the invention includes a main body  230  with a particular shape, which body is formed with a tape guide  231 , wherein the tape guide can be inserted in the case  210  through the rear opening  212  to pass through the front opening  211  to thereby protrude forward with its front tip. On one side of the tape guide  231 , a roll mounting section  234  substantially in circular form is formed integrally with the guide. 
     The tape guide  231  is bent to form a stepped section through which the tape guide  231  is connected integrally to the roll mounting section  234 . At the stepped intersecting section between the tape guide  231  and the roll mounting section  234 , there is formed a through-opening  238 . 
     On the top side of the roll mounting section  234 , there is formed an elastic arm  235  in the form of plate, which arm is intended to facilitate detachable mounting of the main body  210  in the case  230  and which is formed with a projection  236  on its top side end, so that this projection may be engaged with the engagement hole  213  to join the main body  230  with the case  210 . 
     The roll mounting section  234  is formed on one side with the first shaft  262  and on the other side with the second shaft  272 , wherein the first and second shafts  262  and  272  are aligned with and opposite to each other, whereby spatial efficiency is increased in comparison to the conventional shafts with a definite spacing between the two shaft axises. In other words, because the correction tape dispenser according to the invention need not secure the inter shaft distance due to coaxial arrangement while the securement of that distance was indispensable with the conventional device, the inventive correction dispenser device can accommodate more coated types compared to the conventional device having the same size as the present device. 
     The inventive correction tape roll device  200  includes a first roll  240  for winding unused fresh coated tape  220  therearound and a second roll  250  for winding used tape  222 . The first roll  240  is provided with a first gear  260  and the second roll  250  is provided with a second gear  270 . The first and second rolls  240  and  250  are disposed on opposite sides of the roll mounting section  234 , wherein the first arid second gears  260  and  270  are positioned so that the respective end parts of the gears  260  and  270  may lie in the through-opening  238  which is formed in the stepped intersection between the roll mounting section  234  of the main body  230  and the tape guide  231 , particularly as shown in FIGS. 5A and 5B. 
     In addition, the second gear  270  is brought into rotation by a power transmission gear unit  280  through which the rotation of the first gear  260  is transmitted to the second gear  270 . The transmission gear unit  280  is provided with a third shaft  282  rotatable in integration with the transmission gear unit  280 , wherein the third shaft  282  guides the used tape  222  to be easily winded on the second roll  250 . Further, the third shaft  282  is fitted in the hole  232  formed in the tape guide  231 . 
     The circumferential area of the hole  232  is formed, on one side, with a projecting jaw  232   a  so as to be fitted in the groove  282   a  which is positioned around the third shaft  282  formed on the transmission gear unit  280 , as can be seen in FIG.  5 B. The fitted engagement of the projecting jaw  232   a  with the groove  282   a  assures the coupling of the power transmission gear unit  280 . 
     The power transmitting gear unit  280  is composed of two stages, i.e. the lower stage gear  280 A and the upper stage gear  280 B, wherein the lower stage gear  280 A is in engagement with the first gear, while the upper stage gear  280 B is in engagement with the second gear  270 . Accordingly, the rotation of the first gear  260  is transmitted to the second gear  270  to rotate the latter through the transmission gear unit  280  in engagement with the first gear  260 . 
     In assembling, the main body  230 , with the elastic arm  235  on the outside of the roll mounting section  234  lightly pressed, is pushed into the case  210  through its rear opening  212 , so that the projection  236  on the elastic arm  235  may be engaged with the engagement opening  213  to result in the finished correction tape roll device  200  according to the invention. Now, the tape guide  231  is moved on the description to be corrected, with the tip of the tape guide pressed toward that description, so that the dry correction paste may be peeled off the tape for erase. As the case may be, the functions of the two rolls may be exchanged, such that the coated tape  220  is wound on the second roll  250  while the first roll  240  functions to wind up the used tape  222 . 
     When a new coated tape  220  is desired to replace the used one, the main body  230  can be removed from the case  210  by pulling it backward while pressing the elastic arm  235 . Then, the used roll(s)  240  and  250  can be replaced with new roll(s) having new coated tapes  220  wound thereon. 
     The correction tape dispenser i.e. correction tape roll device according to the invention need not secure the inter shaft distance due to coaxial arrangement while the securement of that distance was indispensable with the conventional device permitting the correction dispenser of the present invention to accommodate larger size coated tape. 
     In the correction tape roll device according to the invention, the spatial availability can be enhanced due to the unnecessity of securing the inter shaft distance, because the first and second gears  260  and  270  mounted with the first and second rolls  240  and  250  respectively are positioned coaxial to each other on opposite lateral sides of the roll mounting section  234  so as to be capable of transmitting the rotation through the power transmitting gear unit  280 . 
     Moreover, the used tape  222  is so arranged as to be wound on the second roll  250  after it has been guided by the third shaft  282  rotating together with the power transmission gear unit  280  and therefore the possibility of making trouble in service, particularly the used tape being trapped, can be substantially eliminated.