Valve device

1. A valve device capable of controlling coolant water for a heating element of a vehicle, the valve device comprising:

a housing having a housing main body, a port, a housing-side cover fixing member, and a housing-side cover fastening hole, the housing main body defining an internal space therein, the port fluidly connecting the internal space to an outside of the housing main body, the housing-side cover fixing member being formed as a different member from the housing main body and protruding from an outer wall of the housing main body, the housing-side cover fastening hole being formed inside the housing-side cover fixing member;

a valve having a valve body rotatable about a rotation axis in the internal space and a shaft disposed along the rotation axis, the valve being configured to selectively open and close the port depending on a rotation position of the valve;

a pipe member having a cylindrical pipe portion that has an inside space in fluid communication with the port, the pipe member being attached to the housing main body;

a partition wall portion disposed to separate the internal space from the outside of the housing main body, the partition wall portion defining a shaft through hole therein through which one end of the shaft is rotatably inserted;

a drive unit cover having a cover main body, a cover fixing portion, and a cover fastening hole, the cover main body being disposed on a side of the partition wall portion opposite to the internal space and defining a drive space between the cover main body and the partition wall portion, the cover fixing portion being formed as a different member from the cover main body and protruding from an outer wall of the cover main body, the cover fastening hole being formed inside the cover fixing portion;

a drive unit disposed in the drive space, the drive unit being configured to rotate the valve body through the one end of the shaft; and

a fixing member fixing the cover fixing portion to the housing-side cover fixing member by being inserted into the cover fastening hole to engage with the housing-side cover fastening hole, wherein

the housing-side cover fixing member includes a cover fixing base portion that protrudes from the outer wall of the hosing main body and a cover fixing projection portion that protrudes from the cover fixing base portion toward the cover fixing portion and is fixed to the cover fixing portion, and

at least a portion of the pipe member is located on a side of the cover fixing base portion opposite to the cover fixing projection portion.

2. The valve device according to claim 1 , wherein

the cover fixing projection portion defines a gap between the cover fixing projection portion and the outer wall of the cover main body.

3. The valve device according to claim 1 , wherein

the housing-side cover fastening hole has a length in an axial direction of the housing-side cover fastening hole that is shorter than a combined length of a length of the cover fixing base portion and a length of the cover fixing projection portion in the axial direction of the housing-side cover fastening hole.

4. The valve device according to claim 3 , wherein

a length of a portion of the fixing member inside the housing-side cover fastening hole in the axial direction is shorter than the length of the housing-side cover fastening hole in the axial direction.

5. The valve device according to claim 1 , wherein

the fixing member is a self-tapping screw that engages with the housing-side cover fastening hole by tapping the housing-side cover fastening hole.