Wearable Drive System for a Work Apparatus

Abstract

A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may provided that permit the carrying device to be worn over both shoulders of a user.

1 . A drive system comprising:
 a carrying device with a wearable carrying frame;   an energy store carried by the carrying frame;   at least one electric drive motor carried by the carrying frame; and   a coupling device that is configured to mechanically couple a work apparatus to be driven by the drive motor to the drive system.   
     
     
         2 . The drive system as claimed in  claim 1 , wherein the carrying device comprises a shoulder bag or backpack having at least one strap configured to permit the carrying device to be worn over a shoulder of a user. 
     
     
         3 . The drive system as claimed in  claim 1 , wherein two straps are provided that are configured to permit the carrying device to be worn over both shoulders of a user. 
     
     
         4 . The drive system as claimed in  claim 1 , wherein an axis of rotation of the drive motor extends horizontally in relation to an intended worn state of the drive system. 
     
     
         5 . The drive system as claimed in  claim 1 , wherein the drive motor is fastened to the carrying frame below the energy store in relation to an intended worn state of the drive system. 
     
     
         6 . The drive system as claimed in  claim 1 , wherein
 the drive motor is fastened to the carrying frame by a motor holder; and wherein   the motor holder is designed to move the drive motor relative to the carrying frame.   
     
     
         7 . The drive system as claimed in  claim 1 , wherein the coupling device is designed for the coupling of a drive shaft for the work apparatus to the drive system. 
     
     
         8 . The drive system as claimed in  claim 1 , further comprising a transformer device which is carried by the carrying frame and which transforms an electrical current, which is drawn from the energy store, to a current suitable for powering the drive motor. 
     
     
         9 . The drive system as claimed in  claim 1 , further comprising a hip strap which is connected to the carrying frame. 
     
     
         10 . The drive system as claimed in  claim 1 , further comprising a device which is fastened to the hip strap and thus to the carrying frame, the device comprising either the energy store or a transformer device which transforms an electrical current, which is drawn from the energy store, to a current suitable for powering the drive motor. 
     
     
         11 . The drive system as claimed in  claim 1 , further comprising an electrical connection device which is carried by the carrying frame and which serves for the connection of a consumer device to the drive system. 
     
     
         12 . The drive system as claimed in  claim 1 , further comprising a switching device which is carried by the carrying frame and which serves for the switching of an electrical connection between the energy store and the drive motor and/or for the switching of an electrical connection between the energy store and a transformer device which transforms an electrical current, which is drawn from the energy store, to a current suitable for powering the drive motor.