Reciprocating tool having orbit function
AssigneeBlack & Decker Inc.
InventorYanchao Wang
Life of this patent
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Abstract
A reciprocating power tool may include a driving system driving a reciprocating mechanism. A selection mechanism provides for selection of a linear mode of operation or at least one orbital mode of operation. Motion of a reciprocating shaft of the reciprocating mechanism may be guided by a guide bracket fixed in the housing and an orbit bushing movably coupled in the housing. The guide bracket may include at least one guide slot having a contoured guide surface that guides the motion of the corresponding end portion of the reciprocating shaft. The contoured guide surface may guide the corresponding end portion of the reciprocating shaft in a corresponding direction relative to the longitudinal centerline of the at least one guide slot during an out stroke and a return stroke of the reciprocating stroke.
Claims19
A reciprocating power tool, comprising:
- a housing;
- a driving system including a motor and a transmission received in the housing;
- and
- a reciprocating mechanism received in the housing, the reciprocating mechanism including:
- a guide bracket fixed in the housing;
- a bushing movably coupled in the housing;
- and
- a reciprocating shaft having a first end portion thereof movably coupled to the guide bracket, a second end portion thereof configured to be coupled to an accessory tool, and an intermediate portion thereof movably coupled in the bushing, wherein the reciprocating shaft is configured to reciprocate in response to a force transmitted thereto from the driving system,
- wherein the guide bracket includes:
- at least one guide slot;
- a contoured guide surface defined in the at least one guide slot, the contoured guide surface having a curved contour configured to guide a rolling motion of at least one roller coupled to the first end portion of the reciprocating shaft in response to a reciprocating movement of the first end portion of the reciprocating shaft in the guide bracket,
- wherein, in response to the rolling motion of the at least one roller along the contoured guide surface, the first end portion of the reciprocating shaft moves in a first direction with respect to a longitudinal centerline of the at least one guide slot, and the second end portion of the reciprocating shaft moves in a second direction that is opposite the first direction.
A reciprocating device, comprising:
- a guide bracket fixed to a housing;
- a bushing movably coupled to the housing;
- a reciprocating shaft, including:
- a first end portion movably received in the guide bracket;
- a second end portion configured to be coupled to an accessory tool;
- and
- an intermediate portion movably received in the bushing;
- and
- at least one roller coupled to the first end portion of the reciprocating shaft,
- wherein the guide bracket includes a guide slot defining a guide surface having a curved contour, wherein the guide surface is configured to guide a rolling motion of the at least one roller as the reciprocating shaft reciprocates relative to the guide bracket,
- wherein, in response to movement of the at least one roller along the guide surface, the first end portion of the reciprocating shaft moves in a first direction with respect to a longitudinal centerline of the guide slot, and the second end portion of the reciprocating shaft moves in a second direction, opposite the first direction.
Dependencies are inferred from the claim text.