Vibration damper

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second component has a through opening;
• and,
• said coil spring is adapted so as to permit said first end of said coil spring to be screwed through said through opening to facilitate mounting thereof.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second mount being an attachment module including a plurality of elements coacting with each other;
• said attachment module including a through bore extending through said second component and a thread formed in said through bore;
• said through bore having an end facing away from said first mount and a rotation stop formed at said end of said through bore;
• and,
• said coil spring having a radial counter stop formed thereon for coacting with said rotation stop.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second mount being an attachment module including a plurality of elements coacting with each other;
• said attachment module includes a bushing having an internal thread and said bushing engaging over said second end of said coil spring with said internal thread.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second mount being an attachment module including a plurality of elements coacting with each other;
• said attachment module includes:
• a connecting element for form-tightly holding said second end of said coil spring;
• a receptacle on said second component and said receptacle securely accommodating said connecting element so that said connecting element cannot rotate relative to said second component;
• and,
• said connecting element including a first set of teeth and said receptacle including a second set of teeth meshing with said first set of said teeth.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second mount being an attachment module including a plurality of elements coacting with each other;
• and, said attachment module includes a receptacle having a first part formed as part of said second component and a second part joined to said first part so that said first and second parts conjointly define a receptacle completely surrounding and engaging said second end of said coil spring.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• and,
• said coil spring has a radially bent over end segment form-tightly engaging into said second mount on said second component.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• means for facilitating mounting said coil spring between said first and second mounts from one of said first and second ends of said coil spring;
• one of said mounts corresponding to said one end of said coil spring and said one end including means for holding said one end of said coil spring form-tight so as to prevent a rotational movement of said coil spring in the peripheral direction thereof;
• said second mount includes a lug engaging into said second end of said coil spring;
• and,
• said lug being connected to a turn of said coil spring so as not to be separable therefrom.

A vibration damper assembly disposed between first and second components of a portable handheld work apparatus wherein the first component is a handle for use by an operator for guiding the work apparatus and the second component is a housing accommodating a motor generating vibrations, the vibration damper assembly comprising:

• a coil spring defining a longitudinal center axis and having first and second ends having respective sets of end turns;
• a first mount provided on said first component for holding said coil spring at said first end thereof;
• a second mount provided on said second component for holding said coil spring on said second end thereof;
• said first and second mounts lying approximately on said longitudinal center axis and being spaced at a distance from each other;
• one of said mounts being a first threaded holder for threadably engaging the end turns of one of said ends of said coil spring and said first threaded holder being immovably disposed on the component corresponding thereto;
• said holder defining a stop to limit the extent to which said one end of said coil spring can threadably engage said threaded holder;
• said threaded engagement and said stop being the only and exclusive attachment of said one end of said coil spring to said holder whereby no torsion force is imparted to said coil spring at said holder;
• the other one of said mounts being a second threaded holder for threadably engaging the end turns of the other one of said ends of said coil spring;
• and,
• said second threaded holder being disposed in or on the component corresponding thereto so as to ensure that no torsion force is imparted to said coil spring by said first and second holders when said coil spring is mounted therebetween whereby the vibration damping characteristic of said coil spring is determined exclusively by the material characteristics of said coil spring.