Hand-held power tool with an impact mechanism assembly

A hand-held power tool, comprising:

• an impact mechanism assembly that includes an electric motor;
• an eccentric assembly;
• and
• an impact pin configured to oscillate linearly along an impact mechanism axis,
• wherein the eccentric assembly includes (i) an eccentric wheel mounted in an impact mechanism carrier of the impact mechanism assembly and configured to rotate about an eccentric axis, and (ii) a connecting rod driven by the eccentric wheel and operably coupled to said impact pin to oscillate said pin,
• wherein the electric motor has a motor shaft along a motor axis, which is configured to drive the impact pin by way of the eccentric wheel and the connecting rod,
• wherein the eccentric wheel has an eccentric hub formed on one side, which is mounted along the eccentric axis on a side of the eccentric wheel facing away from the connecting rod proximally with a floating bearing and distally with a fixed bearing in the impact mechanism carrier,
• wherein the floating bearing is fixed in the impact mechanism carrier axially along the eccentric axis by way of a fixing element,
• wherein an air gap extends in the direction of the eccentric axis between the impact mechanism carrier and the fixing element in a not yet in a firmly connected state;
• and
• wherein the fixing element has a spring-loaded tongue for each screw connection which is configured to reduce the air gap in the firmly connected state of the fixing element.

A hand-held power tool, comprising:

• an impact mechanism assembly that includes an electric motor;
• an eccentric assembly;
• and
• an impact pin configured to oscillate linearly along an impact mechanism axis,
• wherein the eccentric assembly includes (i) an eccentric wheel mounted in an impact mechanism carrier of the impact mechanism assembly and configured to rotate about an eccentric axis, and (ii) a connecting rod driven by the eccentric wheel and operably coupled to said impact pin to oscillate said pin,
• wherein the electric motor has a motor shaft along a motor axis, which is configured to drive the impact pin by way of the eccentric wheel and the connecting rod,
• wherein the eccentric wheel has an eccentric hub formed on one side, which is mounted along the eccentric axis on a side of the eccentric wheel facing away from the connecting rod proximally with a floating bearing and distally with a fixed bearing in the impact mechanism carrier,
• wherein the floating bearing is fixed in the impact mechanism carrier axially along the eccentric axis by way of a fixing element designed as a sheet metal part which is configured to be connected to the impact mechanism carrier by way of a plurality of screw connections,
• wherein the eccentric wheel, the floating bearing, the fixed bearing and the fixing element are collectively designed as a pre-assembled structural unit, and
• wherein the eccentric wheel has at least one bore for the screw connections of the fixing element.

A hand-held power tool, comprising:

• an impact mechanism assembly that includes an electric motor;
• an eccentric assembly:
• an impact pin configured to oscillate linearly along an impact mechanism axis,
• wherein the eccentric assembly includes (i) an eccentric wheel mounted in an impact mechanism carrier of the impact mechanism assembly and configured to rotate about an eccentric axis, and (ii) a connecting rod driven by the eccentric wheel and operably coupled to said impact pin to oscillate said pin,
• wherein the electric motor has a motor shaft along a motor axis, which is configured to drive the impact pin by way of the eccentric wheel and the connecting rod,
• wherein the eccentric wheel has an eccentric hub formed on one side, which is mounted along the eccentric axis on a side of the eccentric wheel facing away from the connecting rod proximally with a floating bearing and distally with a fixed bearing in the impact mechanism carrier,
• wherein the fixed bearing has an inner ring connected to the eccentric hub of the eccentric wheel without play via an interference fit, and an outer ring held in a second sliding seat of the impact mechanism carrier, and
• an elastic component acting along the eccentric axis in a direction facing the eccentric wheel and located between the axial end stop of the second sliding seat and the outer ring of the fixed bearing.