Electrical drive-in tool having two component flywheel
An electrical drive-in tool includes a driving ram ( 13 ) displaceable in a guide ( 12 ), and a motor-driven drive flywheel ( 32 ) for driving the driving ram ( 13 ) and having a first component forming at least a circumferentially arranged rim and formed of a metal selected from a group consisting of steel and alloyed iron, and a second component formed of a material having a density greater than a density of the metal the first component is formed of.
1. An electrical drive-in tool for driving in fastening elements, comprising:
a guide ( 12 );
a driving ram ( 13 ) displaceable in the guide ( 12 ); and
a drive unit ( 30 ) including:
a drive flywheel ( 32 ) having:
a hub;
a first component forming at least a circumferentially arranged rim and formed of steel having a density from about 7 g/cm 3 to about 8.4 g/cm 3 ;
a second component forming an annular body positioned between the circumferentially arranged rim and the hub of the drive flywheel ( 32 ), with the second component being formed of a material having a density greater than 8.5 g/cm 3 and also greater than at least 1 g/cm 3 of the density of the steel of which the first component is formed;
a motor ( 31 ) for rotating the drive flywheel ( 32 ); and wherein the second component is formed of metal selected from the group consisting of lead, copper, nickel, tin and silver.
2. A drive-in tool according to claim 1 , wherein the second component is formed of an alloy formed of at least two metals selected from the group consisting of lead, cooper, nickel, tin, zinc, silver, and mercury.
3. A drive-in tool according to claim 1 , wherein the first component forms a base body ( 38 ) carrying the rim ( 41 ) and the hub ( 42 ).
4. A drive-in tool according to claim 3 , wherein the annular body of the second component is formed as an annular body ( 39 ) that is arranged in at least one rotationally symmetrical recess ( 40 ) formed in the base body ( 38 ).
5. A drive-in tool according to claim 3 , wherein the annular body of the second component is formed as an annular body ( 39 ) that is supported, together with the base body ( 38 ) on a common axle ( 34 ).
6. A drive flywheel for driving a driving ram of a drive-in tool, comprising:
a hub;
a first component forming at least a circumferentially arranged rim and formed of steel having a density from about 7 g/cm 3 to about 8.4 g/cm 3 ;
a second component forming an annular body positioned between the circumferentially arranged rim and the hub, with the second component being formed of a material having a density greater than 8.5 g/cm 3 and also greater than at least 1 g/cm 3 of the density of the steel of which the first component is formed; and wherein the second component is formed of metal selected from the group consisting of lead, copper, nickel, tin and silver.