Grinding tool, and main component and grinding component thereof

Abstract

A grinding tool comprises: a main component, the main component comprises a housing, a motor, and an output assembly driven by the motor to rotate; and a grinding component, detachably connected to the main component, the grinding component including a grinding body, and an input assembly rotating relative to the grinding body. The main component comprises a first connector, the input assembly includes a second connector, and the first connector is operably movable relative to the second connector to enable the first connector to be joined to the second connector. So that the output assembly is capable of driving the input assembly to drive the body to move. The grinding tool is simple in structure and easy to operate. The application further discloses a main component of a grinding tool and a grinding component of a grinding tool.

1 - 25 . (canceled) 
     
     
         26 . A grinding tool, comprising:
 a main component comprises a housing,   a motor disposed in the housing, and   an output assembly being rotatably driven by the motor; and   a grinding component detachably connected to an underside of the main component, the grinding component comprises a grinding body and an input assembly located on the grinding body, the input assembly is rotatable around a first pivot axis relative to the grinding body;   wherein the main component further comprises a first connecting member with a first joining portion movably relative to the housing, the input assembly comprises a second joining portion for cooperating with the first joining portion and an eccentric portion with a central axis parallel to and spaced apart the first pivot axis; the first connecting member being configured to be operably movable relative to the input assembly to make the first joining portion connect with the second joining portion, so that the grinding component is connected to the underside of the main component and is movably driven by the motor relative to the housing.   
     
     
         27 . The grinding tool according to  claim 26 , wherein the grinding tool further comprises a locking mechanism configured to lock the input assembly relative to the housing. 
     
     
         28 . The grinding tool according to  claim 27 , wherein the locking mechanism comprises a first locking member non-rotatably movable relative to the housing, and a second locking member configured to fixed relative to the input assembly during the connection of the grinding component to the main component, the first locking member is movable between a first position being separated from the second locking member and a second position being engaged with the second locking member so as to lock the input assembly relative to the housing. 
     
     
         29 . The grinding tool according to  claim 28 , wherein the main component further comprises an operating member configured to be operably switched between an open state and a closed state, when the operating member is in the closed state, the first locking member is separated from the second locking member; when the operating member is in the open state, the first locking member is movable from the first position to the second position and the operating member is operable to drive the first connecting member to rotate relative to the input assembly to make the first joining portion connect with the second joining portion. 
     
     
         30 . The grinding tool according to  claim 26 , wherein the main component further comprises a hollow shaft surrounding the first connecting member, the hollow shaft is configured to be fixed relative to the output assembly so as to rotate with the output assembly; the hollow shaft comprises a first support portion at a first end, and the input assembly comprises a second support portion at a second end, the second support portion is configured to engage with the first support portion for central positioning of the main component and grinding component. 
     
     
         31 . The grinding tool according to  claim 30 , the output assembly comprises a plurality of first ratchet splines circumferentially distributed on the hollow shaft, the input assembly comprises a plurality of second ratchet splines configured to mesh with the first ratchet splines for transmitting rotation of the output assembly. 
     
     
         32 . The grinding tool according to  claim 26 , wherein the first joining portion comprises external thread located on the first connecting member, the second joining portion comprises internal thread located in a mounting hole of the input assembly. 
     
     
         33 . The grinding tool according to  claim 26 , wherein the output assembly further comprises a first driving wheel arranged coaxially with the rotation axis of the motor, and a second driving wheel driven by the first driving wheel, the rotation axis of the first driving wheel is parallel to and spaced from the rotation axis of the second driving wheel, the input assembly connect with the second driving wheel. 
     
     
         34 . The grinding tool according to  claim 33 , wherein the main component further comprises a first fan arranged below and coaxial with the motor, and a second fan arranged below the second driving wheel. 
     
     
         35 . The grinding tool according to  claim 34 , wherein the housing comprises at least one air inlet and at least one air outlet, the at least one air inlet is located at an upper end of the housing and away from the grinding component, the air outlet is located close to the second fan, air flows into the housing from the air inlet under the action of the first fan and through the motor, and flows out from the air outlet under the action of the second fan. 
     
     
         36 . A main component of a grinding tool, configured to be detachably connected to an underside of a grinding component of the grinding tool, the main component comprises:
 a housing;   a motor disposed in the housing and configured to provide a rotary power; and   an output assembly configured to be driven by the motor to transmit the rotary power to an input assembly of the grinding component;   wherein the main component further comprising a first connecting member movably disposed on the housing, the first connecting member is configured to join with the input assembly and driven by the output assembly to rotate relative to the housing when the grinding component is installed on the main component.   
     
     
         37 . The main component according to  claim 36 , wherein the main component further comprises a hollow shaft sheathing over the first connecting member, the output assembly fixed relative to the hollow shaft, the hollow shaft is rotatable relative to the housing when the output component driven by the motor. 
     
     
         38 . The main component according to  claim 37 , wherein the first connecting member is configured movable relative to the hollow shaft during the installation of the grinding component to the underside of the main component. 
     
     
         39 . The main component according to  claim 37 , wherein the first connecting member comprises an lower end with external thread extends out of the hollow shaft, the input assembly comprises a threaded hole with internal thread, the lower end of the first connecting member is configured to engaged with the threaded hole of the input assembly when the first connecting member rotates relative to the housing. 
     
     
         40 . The main component according to  claim 37 , wherein the output assembly comprises a plurality of ratchet splines circumferentially distributed on the hollow shaft, the input assembly comprises a plurality of second ratchet splines configured to mesh with the first ratchet splines for transmitting the rotation of the output assembly. 
     
     
         41 . The main component according to  claim 36 , wherein the main component further comprises a locking mechanism configured to operably switched between a locked state and an unlocked state, when the locking mechanism in the locked state, the locking mechanism prevent the hollow shaft from rotating relative to the housing, when the locking mechanism in the unlocked state, the hollow shaft is released by the locking mechanism so as to rotate relative to the housing. 
     
     
         42 . A grinding component of a grinding tool, configured to be detachably joined to a main component of the grinding tool,
 the grinding component comprising:   a grinding body;   an input assembly located on the grinding body, the input assembly is configured to connect with an output assembly of the main component to drive the grinding component moving relative to the main component, wherein   the input assembly is rotatable around a first pivot axis relative to the grinding body, the input assembly comprises a second joining portion and an eccentric portion having a centre axis parallel to and spaced apart the first pivot axis, the second joining portion is configured to connect with a first connecting member of the main component so as to connect the grinding component to the main component of the grinding tool.   
     
     
         43 . The grinding component according to  claim 42 , wherein the second joining portion comprises a mounting hole with internal thread, the input assembly further comprising a second support portion being configured as a groove coaxial with the mounting hole, the outer diameter of the groove is greater than an outer diameter of the mounting hole. 
     
     
         44 . The grinding component according to  claim 43 , wherein the groove, the mounting hole and the first pivot axis are collinear. 
     
     
         45 . The grinding component according to  claim 44 , wherein the input assembly further comprises a plurality of ratchet splines disposed on the periphery of the second support portion for transmitting torque in cooperation with the output assembly.