Work tool with vibration dampers
First Claim
1. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
- an outer housing extending in an elongate form along a longitudinal axis,an inner housing provided in the outer housing,a brushless motor having a rotational output shaft, anda spindle having a rotation axis extending in parallel to the rotational output shaft of the brushless motor and configured to be rotated on the rotation axis within a prescribed angular range via the brushless motor to drive the tool accessory,along the longitudinal axis, the outer housing having a front outer housing region that defines a front part of the outer housing, a rear outer housing region that defines a rear part of the outer housing, and an intermediate outer housing region that defines an intermediate part between the front outer housing region and the rear outer housing region so as to be held by a user,the inner housing having;
a front inner housing region that is arranged within the front outer housing region and houses at least the brushless motor and the entire spindle, except for a portion of the spindle to which the tool accessory is attached;
a rear inner housing region that is arranged within the rear outer housing region; and
an intermediate inner housing region that is arranged within the intermediate outer housing region,a front elastic member disposed between the front inner housing region and the front outer housing region, anda rear elastic member disposed between at least one of the intermediate inner housing region and the rear inner housing region and at least one of the intermediate outer housing region and the rear outer housing region;
wherein the rotational output shaft and the rotation axis are perpendicular to the longitudinal axis.
1 Assignment
0 Petitions
Accused Products
Abstract
It is an object of the invention to provide a more rational vibration reducing technique for a work tool. A representative work tool 100 has an outer housing 102, an inner housing 104, a brushless motor 115, a spindle 124 having a rotation axis extending in parallel to a rotation output shaft of the brushless motor 115 and configured to be rotated on the rotation axis within a prescribed angular range to drive a tool accessory 145, a front elastic member 110a disposed between a front inner housing region 104a and a front outer housing region 102a, and a rear elastic member 110c disposed between at least one of an intermediate inner housing region 104b and a rear inner housing region 104c and at least one of an intermediate outer housing region 102b and a rear outer housing region 102c.
42 Citations
15 Claims
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1. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
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an outer housing extending in an elongate form along a longitudinal axis, an inner housing provided in the outer housing, a brushless motor having a rotational output shaft, and a spindle having a rotation axis extending in parallel to the rotational output shaft of the brushless motor and configured to be rotated on the rotation axis within a prescribed angular range via the brushless motor to drive the tool accessory, along the longitudinal axis, the outer housing having a front outer housing region that defines a front part of the outer housing, a rear outer housing region that defines a rear part of the outer housing, and an intermediate outer housing region that defines an intermediate part between the front outer housing region and the rear outer housing region so as to be held by a user, the inner housing having;
a front inner housing region that is arranged within the front outer housing region and houses at least the brushless motor and the entire spindle, except for a portion of the spindle to which the tool accessory is attached;
a rear inner housing region that is arranged within the rear outer housing region; and
an intermediate inner housing region that is arranged within the intermediate outer housing region,a front elastic member disposed between the front inner housing region and the front outer housing region, and a rear elastic member disposed between at least one of the intermediate inner housing region and the rear inner housing region and at least one of the intermediate outer housing region and the rear outer housing region; wherein the rotational output shaft and the rotation axis are perpendicular to the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
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an outer housing extending in an elongate form along a longitudinal axis, an inner housing provided in the outer housing, a brushless motor having a rotational output shaft, and a spindle having a rotation axis extending in parallel to the rotational output shaft of the brushless motor and configured to be rotated on the rotation axis within a prescribed angular range via the brushless motor to drive the tool accessory, along the longitudinal axis, the outer housing having a front outer housing region that defines a front part of the outer housing, a rear outer housing region that defines a rear part of the outer housing, and an intermediate outer housing region that defines an intermediate part between the front outer housing region and the rear outer housing region, the inner housing having;
a front inner housing region that is arranged within the front outer housing region and houses at least the brushless motor and the entire spindle, except for a portion of the spindle to which the tool accessory is attached;
a rear inner housing region that is arranged within the rear outer housing region; and
an intermediate inner housing region that is arranged within the intermediate outer housing region,a front elastic member disposed between the front inner housing region and the front outer housing region, and an intermediate elastic member provided at a prescribed location in an area from the front inner housing region to the rear inner housing region via the intermediate inner housing region and configured to elastically connect the front inner housing region to at least the rear inner housing region; wherein the rotational output shaft and the rotation axis are perpendicular to the longitudinal axis. - View Dependent Claims (13)
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14. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
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an outer housing extending in an elongate form along a longitudinal axis, an inner housing provided in the outer housing, a brushless motor having a rotational output shaft, and a spindle having a rotation axis extending in parallel to the rotational output shaft of the brushless motor and configured to be rotated on the rotation axis within a prescribed angular range via the brushless motor to drive the tool accessory, along the longitudinal axis, the outer housing having a front outer housing region that defines a front part of the outer housing, a rear outer housing region that defines a rear part of the outer housing, and an intermediate outer housing region that defines an intermediate part between the front outer housing region and the rear outer housing region so as to be held by a user, the inner housing having;
a front inner housing region that is arranged within the front outer housing region and houses at least the brushless motor and the entire spindle, except for a portion of the spindle to which the tool accessory is attached;
a rear inner housing region that is arranged within the rear outer housing region; and
an intermediate inner housing region that is arranged within the intermediate outer housing region,a front elastic member disposed between the front inner housing region and the front outer housing region, and a rear elastic member disposed between at least one of the intermediate inner housing region and the rear inner housing region and at least one of the intermediate outer housing region and the rear outer housing region; wherein the rotational output shaft and the rotation axis are on separate, but parallel, axes, wherein the rotational output shaft and the rotation axis are perpendicular to the longitudinal axis.
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15. A work tool, which performs a prescribed operation on a workpiece by driving a tool accessory, comprising:
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an outer housing extending in an elongate form along a longitudinal axis, an inner housing provided in the outer housing, a brushless motor having a rotational output shaft, and a spindle having a rotation axis extending in parallel to the rotational output shaft of the brushless motor and configured to be rotated on the rotation axis within a prescribed angular range via the brushless motor to drive the tool accessory, along the longitudinal axis, the outer housing having a front outer housing region that defines a front part of the outer housing, a rear outer housing region that defines a rear part of the outer housing, and an intermediate outer housing region that defines an intermediate part between the front outer housing region and the rear outer housing region, the inner housing having;
a front inner housing region that is arranged within the front outer housing region and houses at least the brushless motor and the entire spindle, except for a portion of the spindle to which the tool accessory is attached;
a rear inner housing region that is arranged within the rear outer housing region; and
an intermediate inner housing region that is arranged within the intermediate outer housing region,a front elastic member disposed between the front inner housing region and the front outer housing region, and an intermediate elastic member provided at a prescribed location in an area from the front inner housing region to the rear inner housing region via the intermediate inner housing region and configured to elastically connect the front inner housing region to at least the rear inner housing region; wherein the rotational output shaft and the rotation axis are on separate, but parallel, axes, wherein the rotational output shaft and the rotation axis are perpendicular to the longitudinal axis.
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Specification