A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and f
A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and forefinger, is formed. A pair of side-face grooves, into which the user can place the thumb and forefinger, are formed in both side faces of the housing. A depth changing portion is formed in at least one of the side-face grooves, such that the depth is reduced toward the back-end face of the housing. According to this structure, even when the housing is gripped directly from the back-end face, the user can easily draw up or raise the power tool.
대표청구항▼
1. A portable power tool, comprising: a prime mover that rotates a tool; anda housing that houses the prime mover, the housing comprising:a back-end groove, into which a user can place a web between a thumb and a forefinger of the user, being formed on a back-end face of the housing that is arranged
1. A portable power tool, comprising: a prime mover that rotates a tool; anda housing that houses the prime mover, the housing comprising:a back-end groove, into which a user can place a web between a thumb and a forefinger of the user, being formed on a back-end face of the housing that is arranged on an opposite side from the tool, anda pair of side-face grooves, into which the user can place the thumb and forefinger, being formed on both side faces of the housing,wherein a surface of the back-end groove is covered with a deformable material that is more flexible than a material of the housing, surfaces of the side-face grooves are not covered with the deformable material, and the material of the housing is exposed on the surfaces of the side-face grooves. 2. The portable power tool according to claim 1, wherein at least one side face groove includes a depth changing portion where a depth of the side-face groove is reduced toward the back-end face of the housing. 3. The portable power tool according to claim 1, wherein the at least one side-face groove further includes a constant-depth portion where the depth of the side-face groove is substantially constant, and the constant-depth portion extends from the depth changing portion toward a tool side. 4. The portable power tool according to claim 1, wherein at least one protrusion is formed in at least one of the pair of side-face grooves. 5. The portable power tool according to claim 4, wherein at least one side-face groove includes a depth changing portion where a depth of the side-face groove is reduced toward the back-end face of the housing, and the at least one protrusion is formed within the depth changing portion. 6. The portable power tool according to claim 4, wherein the at least one protrusion is made of a material softer than the material of the housing. 7. The portable power tool according to claim 4, wherein the at least one protrusion is in a V-shape tapered toward the back end side of the housing from both end portions of the V-shape to an intermediate portion of the V-shape. 8. The portable power tool according to claim 1, wherein the back-end groove becomes deeper toward the back end of the housing. 9. The portable power tool according to claim 1, wherein an upper rim portion of the back-end groove protrudes more than an lower rim portion of the back-end groove. 10. The portable power tool according to claim 1, wherein a depth of the back-end groove is equal to or greater than 6 millimeters at the back end of the housing. 11. The portable power tool according to claim 1, wherein a flange portion protruding from the housing is formed in an upper portion of the back-end groove of the housing. 12. The portable power tool according to claim 11, wherein a height of the flange portion is greatest at the back end of the housing and decreases toward the side faces of the housing. 13. The portable power tool according to claim 1, wherein the back-end groove and the pair of side-face grooves are formed in a series.
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이 특허에 인용된 특허 (14)
Smolinski Gerald J. ; Landree Dale R., Air ratchet hand tool with thermoplastic jacket.
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