Exhaust gas recirculation valve in vehicle

An exhaust gas recirculation EGR valve in a vehicle comprising:

• a driving unit having a driving motor for rotating a motor shaft;
• an interlocking unit for receiving rotation force from the motor shaft;
• a rod portion arranged perpendicular to the interlocking unit for moving upon reception of the rotation force from the interlocking unit;
• a valve unit provided to an end portion of the rod portion for controlling a flow rate of the exhaust gas;
• and
• a valve housing coupled to the driving unit as one unit, having an EGR port and a bypass port,
• wherein:
• the interlocking unit includes a valve return member for rotating the motor shaft forcibly to make the valve unit to move to an initial position;
• the valve return member is a torsion spring which generates torsion in a rotation direction of a regular or reverse direction rotation of the motor shaft the torsion spring including a body portion having a coil wound plurality of times, and first and second extensions from a starting point and an end point of the coil wound thus, respectively;
• the interlocking unit further includes a cap member which covers an outside, and the valve return member is mounted in the cap member;
• the cap member includes a projection from an inside surface thereof;
• and
• the projection includes:
• a guide projection for supporting the first and second extensions of the torsion spring;
• and
• a stopper is arranged spaced from the guide projection to prevent the interlocking gear from rotating excessively.