Importance

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Abstract

There is provided an electric driving unit for X-type gun made up by combining a pressure application driving body with a motor, wherein the electric driving unit is attached to a fixed arm or a gun bracket utilizing a housing of the motor, thereby obtaining the electric driving unit for X-type gun capable of rendering the electric driving unit to be compact and held stably, and causing the maintenance thereof to be executed with reliability and ease. The electric driving unit for X-type gun, wherein the pressure application driving body and a motor are combined with each other, comprises: a rotary shaft provided in the motor and formed of a hollow shaft to which a screw shaft is secured; a guide bearing provided at the front end side of the motor for guiding the pressure application shaft; said pressure application shaft having: a part to be driven by the motor and pulled into the motor; a hollow part for containing therein a tip end side of the screw shaft; a nut to be threaded with the screw shaft; and a bearing provided at the front thereof for causing the rear end of the swing arm to be journalled to the pressure application shaft by a pivotal shaft; said electric driving unit for X-type gun still further comprising: a housing provided at the front end of the motor; a bearing provided in the housing for bearing a load applied to the rotary shaft of the motor in the axial direction thereof; and a bearing provided in the housing for causing the housing to be journalled to the fixed arm or causing the housing to be journalled to the gun bracket by a pivotal shaft.

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First Claim