Drill chuck

Abstract

A drill is provided with a chuck that is capable of being tightened or loosened by operation of the drill. The chuck includes a shift mechanism that interacts with the multi-speed transmission of the drill to ensure that the transmission is shifted into a desired gear ratio whenever the chuck is shifted from a drill mode to a chuck mode.

1 . A drill, comprising: 
 a motor;    a multi-speed transmission device drivingly connected to said motor, said multi-speed transmission device being operable in at least two gear ratios;    a chuck drivingly connected to said multi-speed transmission device, said chuck being operable in a drilling mode and a chuck loosening mode, said chuck including an actuating device that is operable to switch said chuck from said drilling mode to said chuck loosening mode and simultaneously switching said multi-speed transmission device to a desired gear ratio.    
   
   
       2 . The drill according to  claim 1 , wherein said actuating device includes an arm engaging a shift mechanism of said multi speed transmission.  
   
   
       3 . The drill according to  claim 1 , wherein said actuating device includes a rotary sleeve that is operable by a user.  
   
   
       4 . The drill according to  claim 3 , wherein said rotary sleeve includes an arm engaging a shift mechanism of said multi-speed transmission.  
   
   
       5 . The drill according to  claim 1 , wherein said multi-speed transmission includes a shift mechanism engageable by said actuating device when said chuck is switched from said drilling mode to said chuck loosening mode.  
   
   
       6 . The drill according to  claim 5 , wherein said actuating device is disengaged from said shift mechanism when said chuck is switched from said chuck loosening mode to said drilling mode.  
   
   
       7 . The drill according to  claim 1 , wherein said desired gear ratio is a highest gear ratio of said plurality of gear ratios.  
   
   
       8 . A drill, comprising: 
 a motor;    a multi-speed transmission device drivingly connected to said motor, said multi speed transmission device being operable in at least two gear ratios;    a chuck drivingly connected to said multi-speed transmission device, said chuck being operable in a drilling mode and a chuck tightening mode, said chuck including an actuating device that is operable to switch said chuck from said drilling mode to said chuck tightening mode and simultaneously switching said multi-speed transmission device to a desired gear ratio.    
   
   
       9 . The drill according to  claim 8 , wherein said actuating device includes an arm engaging a shift mechanism of said multi speed transmission.  
   
   
       10 . The drill according to  claim 8 , wherein said actuating device includes a rotary sleeve that is operable by a user.  
   
   
       11 . The drill according to  claim 10 , wherein said rotary sleeve includes an arm engaging a shift mechanism of said multi-speed transmission.  
   
   
       12 . The drill according to  claim 8 , wherein said multi-speed transmission includes a shift mechanism engageable by said actuating device when said chuck is switched from said drilling mode to said chuck tightening mode.  
   
   
       13 . The drill according to  claim 12 , wherein said actuating device is disengaged from said shift mechanism when said chuck is switched from said chuck tightening mode to said drilling mode.  
   
   
       14 . The drill according to  claim 8 , wherein said desired gear ratio is a lowest gear ratio of said plurality of gear ratios.  
   
   
       15 . A drill, comprising: 
 a motor;    a multi-speed transmission device drivingly connected to said motor, said multi speed transmission device being operable in at least two gear ratios;    a chuck drivingly connected to said multi-speed transmission device, said chuck being operable in a drilling mode and a chuck mode, said chuck including an actuating device that is operable to switch said chuck from said drilling mode to said chuck mode; and    a lock out device engaged with said chuck and a shift mechanism of said multi-speed transmission device and adapted to prevent said chuck from being switched to said chuck mode unless said multi-speed transmission is in a predetermined one of said at least two gear ratios.    
   
   
       16 . The drill according to  claim 15 , wherein said lock out device includes a spring biased member that engages a cam surface on said shift mechanism and is pressed by said cam surface into engagement with said chuck to prevent said chuck from being switched to said chuck mode when said multi-speed transmission is not in said predetermined one of said at least two gear ratios.  
   
   
       17 . The drill according to  claim 15 , wherein said lock out device includes a spring biased member that engages a recess on said shift mechanism when said multi-speed transmission is in said predetermined one of said at least two gear ratios so as to allow said chuck to be moved from said drilling mode to said chuck mode.  
   
   
       18 . A drill, comprising: 
 a motor;    a multi-speed transmission device drivingly connected to said motor, said multi speed transmission device being operable in at least two gear ratios;    a chuck drivingly connected to said multi-speed transmission device, said chuck being operable in a drilling mode and a chuck mode, said chuck including an actuating device that is operable to switch said chuck from said drilling mode to said chuck mode; and    a lock out device engaged with said chuck and a shift mechanism of said multi-speed transmission device and adapted to prevent said multi-speed transmission from being switched from a predetermined one of said at least two gear ratios while said chuck is in said chuck mode.    
   
   
       19 . The drill according to  claim 18 , wherein said lock out device includes a spring biased member that engages a cam surface on said shift mechanism and is pressed by said cam surface into engagement with said chuck, said chuck having a recess that is aligned with said member when said chuck is in said drilling mode to allow said member to move into said recess and thereby allow said shift mechanism to move between said at least two gear ratios.  
   
   
       20 . The drill according to  claim 18 , wherein said lock out device includes a spring biased member that engages a cam surface on said shift mechanism and is pressed by said cam surface into engagement with said chuck, said chuck blocking movement of said member when said chuck is in said chuck mode to prevent said shift mechanism from moving out of said predetermined one of said at least two gear ratios.  
   
   
       21 . A drill, comprising: 
 a motor;    a multi-speed transmission device drivingly connected to said motor, said multi-speed transmission device being operable in at least two gear ratios;    a chuck drivingly connected to said multi-speed transmission device, said chuck being operable in a drilling mode and a chuck mode, said chuck including an actuating device that is operable to switch said chuck from said drilling mode to said chuck mode and simultaneously switching said multi-speed transmission device to a desired gear ratio.    
   
   
       22 . The drill according to  claim 21 , wherein said actuating device includes an arm engaging a shift mechanism of said multi speed transmission.  
   
   
       23 . The drill according to  claim 21 , wherein said actuating device includes a rotary sleeve that is operable by a user.  
   
   
       24 . The drill according to  claim 23 , wherein said rotary sleeve includes an arm engaging a shift mechanism of said multi-speed transmission.  
   
   
       25 . The drill according to  claim 21 , wherein said multi-speed transmission includes a shift mechanism engageable by said actuating device when said chuck is switched from said drilling mode to said chuck mode.  
   
   
       26 . The drill according to  claim 25 , wherein said actuating device is disengaged from said shift mechanism when said chuck is switched from said chuck mode to said drilling mode.  
   
   
       27 . The drill according to  claim 21 , wherein said desired gear ratio is a highest gear ratio of said plurality of gear ratios.