Patent Publication Number: US-6213621-B1

Title: Tool kit with illumination function

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a tool kit with illuminating function, and more particularly to a tool kit having a tool connecting section detachably connected with a tool kit. A cover board serves to prevent the tool heads from dropping out of the tool kit. 
     FIGS. 6 and 7 show a conventional screwdriver with illuminating function. The screwdriver has a grip  8  made of transparent material. The center of the front end of the grip  8  is disposed with an elongated tool stem  81 . The periphery of the tool stem  81  is formed with multiple engaging holes  82  for engaging with a tool head  7 . A kit of tool heads  7  can be placed at the end section of the tool stem  81 . The outer periphery of the front section of the grip  8  is disposed with an engaging groove  83 . A flange  841  of a transparent cover shade  84  can be engaged into the engaging groove to make the cover shade  84  cover the front section of the grip  8  and prevent the tool head  7  from dropping out. An illuminating device  9  is disposed in the grip  8 . A bottom cap  85  is screwed with the rear end of the grip  8 . The center of the bottom cap  85  is disposed with a resilient push button  86  for touching and controlling the switch  91  of the illuminating device  9 , whereby the light of the illuminating device  9  can be projected toward the front side of the grip  8  to provide illumination in working. 
     In the above screwdriver, the tool heads  7  are placed in the engaging holes  82 . However, when replacing and taking out the tool head  7 , it is necessary to open the entire cover shade  84  and take out the cover shade along the tool stem  81 . After the tool head  7  is taken out, the cover shade  84  is again fitted back through the tool stem  81 . Therefore, it is inconvenient to take out the tool head  7 . Moreover, in practice, in order to avoid the tool head  7  from unexpectedly dropping out, the tool head  7  must be tightly fitted in the engaging hole  82 . Therefore, it costs greater strength to extract out the tool head  7 . 
     SUMMARY OF THE INVENTION 
     It is therefore a primary object of the present invention to provide a tool kit with illuminating function. The tool kit is tightened and fixed by a fixing cap and user can rotate a cover board to align a taking hole thereof with the engaging hole of the main body of the tool kit so as to conveniently take out the tool head. When the taking hole is disaligned from the engaging hole, the tool head is prevented from dropping out so that the kit of tool heads can be reliably located in the tool kit. 
     According to the above object, the tool kit with illuminating function of the present invention includes: 
     a hollow grip for receiving therein an illuminating cell unit, two ends of the grip being formed with outer threads; 
     a bottom cap screwed on the outer thread of the rear end of the grip, a center of the bottom cap being disposed with a resilient push button for pressing the illuminating cell unit to control on/off of the power therefor; and 
     a transparent cover shade having a tool connecting section and a grip connecting section, the tool connecting section having an elongated tool stem, an end section of the tool stem being replaceably connected with a kit of tool heads, the transparent cover shade being passed through a top cap which is screwed on the outer thread of the front end of the grip for fixing the transparent cover shade. 
     The tool kit is characterized in that the circumference of the tool connecting sect ion of the transparent cover shade is detachably connected with a tool kit. A front end of the tool connecting sect ion being disposed with a fixing cap which can be screwed and tightened. The tool kit is made of transparent material and has a substantially ring-shaped main body formed with multiple internal engaging holes for receiving a kit of tool heads therein. The front end of the main body has a small diameter section on which a cover board is fitted. The cover board is formed with a taking hole which can be aligned with one of the engaging holes by means of rotating the cover board. The entire tool kit is fitted with the tool connecting section and tightened and fixed by the fixing cap. 
     The present invention can be best understood through the following description and accompanying drawings wherein: 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective exploded view of the present invention; 
     FIG. 2 is a perspective assembled view of the present invention; 
     FIG. 3 is a sectional view taken along line III—III of FIG. 2; 
     FIG. 4 is a sectional view taken along line IV—IV of FIG. 2; 
     FIG. 5 shows that the tool head is taken out from the tool kit of the present invention; 
     FIG. 6 is a perspective exploded view of a conventional screwdriver with illuminating function; and 
     FIG. 7 is a perspective assembled view of the conventional screwdriver with illuminating function. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Please refer to FIGS. 1 to  4 . According to a preferred embodiment, the tool kit of the present invention includes: 
     an illuminating cell unit  1 , a rear end of the illuminating cell unit  1  being disposed with a press switch  11 , a front end of the illuminating cell unit  1  being disposed with a bulb  12  and a light shade  13  for making the light of the bulb  12  projected forward; 
     a hollow grip  2 , two ends of the grip  2  being formed with outer threads  21 ,  22 , the end face of the outer thread  21  of the front end being formed with multiple locating notches  23 , the illuminating cell unit  1  being positioned in the grip  2 ; 
     a bottom cap  3  screwed on the outer thread  22  of the rear end of the grip  2 , the center of the bottom cap  3  being disposed with a resilient push button  31  for pressing the press switch  11  of the illuminating cell unit  1  to control on/off of the power; 
     a transparent cover shade  4  having a tool connecting section  41  and a grip connecting section  42 , the end edge of the grip connecting section  42  being formed with multiple locating blocks  421  for inserting into the locating notches  23  of the grip  2 , a top cap  45  being screwed on the outer thread  21  of the front end of the grip  2  for fixing the transparent cover shade  4 , a ratchet mechanism  51  being disposed in the tool connecting section  41 , the ratchet mechanism  51  having a forward extending tool stem  5 , the end section of the tool stem  5  being replaceably connected with a kit of tool heads  53 , the ratchet mechanism  51  having a switch  52  protruding out of the outer circumference of the tool connecting section  41 , the circumference of the tool connecting section  41  being formed with two axially extending channels  43 , a fixing cap  44  being screwed with the front end of the tool connecting section  41 ; and 
     a tool kit  6  fitted around the tool connecting section  41 , the tool kit  6  having a substantially ring-shaped main body  61  formed with multiple internal engaging holes  62  at intervals for receiving a kit of tool heads  53  therein, the intervals between the respective engaging holes  62  permitting the light of the illuminating cell unit  1  to pass therethrough for illumination, the inner circumferential wall of the main body  61  being formed with projections  63  corresponding to the channels  43  of the tool connecting section  41  for inserting into the channels  43 , the front end of the main body  61  having a small diameter section  64  on which a cover board  65  is fitted, the outer circumference of the small diameter section  64  being formed with multiple engaging grooves  641  arranged at positions corresponding to the respective engaging holes  62  and a non-engaging hole section. 
     The cover board  65  is formed with a taking hole  66  which can be aligned with one of the engaging holes  62  by means of rotating the cover board  65 . The inner circumference of the cover board  65  is disposed with an engaging rib  651  for engaging into the engaging groove  641  of the main body  61 . The tool kit  6  is fitted with the tool connecting section  41  and tightened by the fixing cap  44 . In addition, the main body  61  of the tool kit  6  is formed with a recess  611  corresponding to the switch  52  of the ratchet mechanism  51  for a user to operate the switch  52 . 
     The entire tool kit  6  is tightly fixed on the tool connecting section  41  by the fixing cap  44  so that the tool kit  6  is prevented from being axially displaced. In addition, the projections  63  of the main body  61  of the tool kit  6  are inserted in the channels  43  of the tool connecting section  41  so that the tool kit  6  is prevented from being rotated. Therefore, the tool kit  6  can be firmly connected with the tool connecting section  41 . The engaging rib  651  of the cover board  65  is engaged in the engaging groove  641  of the tool kit  6 , whereby the taking hole  66  of the cover board  65  can be naturally aligned with the engaging hole  62  for taking out the tool head  53  as shown in FIG.  5 . When the taking hole  66  of the cover board  65  is positioned at the non-engaging hole section, the taking hole  66  is disaligned from the engaging hole  62  so that the tool head  53  is prevented from dropping out. 
     The tool kit  6  is made of transparent material and there are intervals between the engaging holes  62  so that when illumination is required, the light of the illuminating cell unit  1  can pass through the tool kit  6  to forward project onto the working range and provide necessary illumination. 
     According to the above arrangement, the tool kit  6  is fixed by the fixing cap  44  and a user can rotate the cover board  65  to align the taking hole  66  thereof with the engaging hole  62  of the main body  61  of the tool kit  6  so as to conveniently take out the tool head  53 . When the taking hole  66  is disaligned from the engaging hole  62 , the tool head  53  is prevented from dropping out so that the kit of tool heads  53  can be reliably located in the tool kit  6 . 
     Moreover, in the case that the user wants to apply the present invention to a work piece necessitating higher precision and it is necessary enhance the freeness of the tool kit, the user can first turn and remove the fixing cap  44  and then take off the tool kit  6  and then again turn tight the fixing cap  44  so as to reduce the weight of the tool kit and enhance the freeness in use. 
     The above embodiment is only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiment can be made without departing from the spirit of the present invention.