초록 ▼

A technique for making a handle vibration-proof while avoiding size increase is provided in an impact tool. The impact tool has a striking mechanism part for driving a tool bit in its axial direction, a motor for driving the striking mechanism part, a tool body housing the motor and striking mechani

A technique for making a handle vibration-proof while avoiding size increase is provided in an impact tool. The impact tool has a striking mechanism part for driving a tool bit in its axial direction, a motor for driving the striking mechanism part, a tool body housing the motor and striking mechanism part, an outer shell housing covering part of the tool body, a handle that is integrally formed with the outer shell housing and extends transversely to the axial direction, a first handle end portion formed on one extending end of the handle, a second handle end portion formed on the other extending end of the handle, a first elastic element that connects the first handle end portion and tool body for relative movement in the axial direction, and a second elastic element that connects the second handle end portion and tool body for relative movement in the axial direction.

대표청구항 ▼

1. An impact tool comprising: a striking mechanism part that strikes a tool bit in an axial direction of the tool bit,a motor that drives the striking mechanism part and is disposed such that a rotation axis of the motor runs transversely to the axial direction of the tool bit,a tool body having a f

1. An impact tool comprising: a striking mechanism part that strikes a tool bit in an axial direction of the tool bit,a motor that drives the striking mechanism part and is disposed such that a rotation axis of the motor runs transversely to the axial direction of the tool bit,a tool body having a first portion that houses the motor and a second portion that houses the striking mechanism part, the tool body having a front end region to which the tool bit is coupled and a rear end region, the front end region of the tool body being closer to the tool bit, in the axial direction, than the rear end region of the tool body,an outer shell housing that covers the second portion of the tool body, the outer shell housing having a front end region and a rear end region, the front end region of the outer shell housing being closer to the tool bit than the rear end region of the outer shell housing in the axial direction, the front end region of the outer shell housing having a bottom that is open other than at a front end of the bottom, the bottom being spaced from the rotation axis in a direction transverse to the axial direction and facing the first portion of the tool body, the first portion of the tool body extending from the bottom of the front end region of the outer shell housing in the transverse direction,a handle that is designed to be held by a user and integrally formed with the outer shell housing on a side opposite from the tool bit and extends transversely to the axial direction of the tool bit,a first handle end portion formed on a first extending end of the handle,a second handle end portion formed on a second extending end of the handle opposite to the first extending end,a first elastic element that is disposed between the first handle end portion and the tool body and connects the first handle end portion and the tool body such that the first handle end portion and the tool body can move in the axial direction of the tool bit with respect to each other,a second elastic element that is disposed between the second handle end portion and the tool body and connects the second handle end portion and the tool body such that the second handle end portion and the tool body can move in the axial direction of the tool bit with respect to each other,an auxiliary handle directly coupled with an outer surface of the outer shell housing front end region, anda third elastic element extending about an outer circumference of the tool body front end region between an inner peripheral surface of the outer shell housing front end region and the outer circumference of the tool body front end region such that the outer shell housing front end region and the tool body can move with respect to each other, thereby reducing vibration transmitted from the tool body front end region to the auxiliary handle,wherein the outer circumference defines a circumferential plane that is orthogonal to the axial direction of the tool bit,wherein the first portion of the tool body that houses the motor is exposed to an outside of the impact tool,wherein the outer shell housing, the handle, and the auxiliary handle are integrally formed, andwherein the integrally formed outer shell housing, handle, and auxiliary handle are elastically connected with and movable relative to the second portion of the tool body and the first portion of the tool body that houses the motor. 2. The impact tool as defined in claim 1, wherein the third elastic element comprises a plurality of elastic receivers which are disposed at predetermined intervals in a circumferential direction and held in contact with the inner peripheral surface of the outer shell housing front end region and the outer circumference of the tool body front end region. 3. The impact tool as defined in claim 1, wherein the outer shell housing covers only the second portion of the tool body entirely along the striking mechanism part in a longitudinal direction of the striking mechanism part. 4. The impact tool as defined in claim 1, wherein the third elastic element includes one or more elastic members that extend about a circumference of the second portion of the tool body. 5. The impact tool as defined in claim 1, wherein the auxiliary handle is coupled with the outer surface of the outer shell housing front end region by a side grip mounting part, the third elastic element being disposed between the auxiliary handle and the outer circumference of the tool body front end region in the circumferential plane.