Power tool having a plastics material housing
AssigneeBlack & Decker Inc.
InventorsHorst Grossmann, Rolf Meier, Karl Schmid
Life of this patent
Estimating the term…
Abstract
A power tool having a plastics material housing and a power output spindle is provided with a tube-like metal member in the front end of the housing. A bearing is received within the tube-like member for supporting the spindle. The tube-like member has at the front end thereof radially outwardly extending tabs for dissipating heat therefrom. The tabs are preferably partially embedded in the plastics material of the front end of the housing for anchoring the member therein, alternate tabs preferably being angled rearwardly. The member may also support ratchet teeth of a hammer drill. A fan may be mounted on the spindle in the region of the front end of the member for facilitating dissipation of heat from the radial tabs.
Claims13
A power tool, comprising:
- a plastics material housing;
- a power output spindle;
- a tube-like metal member integrally moulded in the front end of said housing;
- a bearing received within said tube-like member and supporting said spindle;
- and
- said tube-like member having at the front end thereof a plurality of radially outwardly extending tabs at least partially embedded in the plastics material of the front end of said housing for anchoring said tube-like member therein and for dissipating heat from said member and said bearing.
A power tool, comprising:
- a plastics material housing;
- a power output spindle;
- a tube-like metal member in the front end of said housing;
- bearing means, received within the tube-like metal member, for supporting said spindle;
- said tube-like metal member having at the front end thereof radially outwardly extending portions for dissipating heat from said member;
- and
- said outwardly extending portions comprising a plurality of tabs at least partially embedded in the plastics material of the front end of said housing for anchoring said tube-like member therein.
A power tool, comprising:
- a plastics material housing;
- a power output spindle;
- a tube-like metal member in the front end of said housing;
- bearing means, received within the tube-like metal member, for supporting said spindle;
- said tube-like metal member having at the front end thereof radially outwardly extending portions for dissipating heat from said member;
- said tube-like metal member being formed from sheet metal;
- and
- apertures are provided in said tube-like metal member and said member is integrally moulded in said front end of said housing whereby during the integral moulding of said tube-like metal member in said housing, plastics material flows into said apertures to anchor said tube-like metal member in said housing.
A power tool, comprising:
- a plastics material housing;
- a power output spindle;
- a tube-like metal member in the front end of said housing;
- bearing means, received within the tube-like metal member, for supporting said spindle;
- said tube-like metal member having at the front end thereof radially outwardly extending portions for dissipating heat from said member;
- and
- said tube-like metal member being a cup-shaped, stepped, sheet metal member.
A power tool, comprising:
- a plastics material housing;
- a power output spindle;
- a tube-like metal member in the front end of said housing;
- bearing means, received within the tube-like metal member, for supporting said spindle;
- said tube-like metal member having at the front end thereof radially outwardly extending portions for dissipating heat from said member;
- and
- rotatable fan means associated with said spindle and located in the region of said front end of said tube-like metal member proximate a chuck of the power tool for facilitating dissipation of heat from said tube-like metal member.
A portable power tool comprising:
- a plastics material housing;
- a rotatable power output spindle;
- a tube-like member of sheet metal integrally moulded in the front end of said housing;
- bearing means, received within said tube-like member, for supporting said spindle;
- said tube-like member having at the front end thereof a plurality of bent-over, outwardly extending tabs which are at least partially embedded in the plastics material of the front end of said housing to provide firm location of said tube-like member in said housing while at the same time providing forwardly facing external surfaces for dissipation of heat from said member;
- and
- a fan rotatable with said spindle and located in the region of the front end of said tube-like metal member for directing cooling air outwardly over said forwardly facing surfaces of said tabs to increase dissipation of heat from said tube-like metal member.
Dependencies are inferred from the claim text.