Valve device

1. A valve device comprising:

a body including a gas passage through which gas flows and an accommodation recess that includes an outer recessed portion that opens on a side surface of the body and communicates with the gas passage;

a valve mechanism which includes a solenoid configured with a bobbin and coil, the valve mechanism configured to control a flow of the gas flowing through the gas passage; and

a cover fixed to the body such that the cover covers the accommodation recess, wherein

the solenoid protrudes from the accommodation recess;

the cover is dimensioned to cover a single valve mechanism, and is configured such that an outermost wall of the cover is configured with an inner surface that defines a cover recess that opens toward the accommodation recess, a diameter of the cover recess, defined by the inner surface of the outermost wall of the cover, is substantially equal to an inner diameter of the outer recessed portion;

the valve mechanism is assembled to the body such that the valve mechanism is accommodated in the accommodation recess with a portion of at least one of the bobbin and coil protruding from the accommodation recess and the portion of the at least one of the bobbin and coil is accommodated in the cover recess;

the cover is fixed to the body by a bolt and configured such that the valve mechanism is not coupled to the cover;

the cover includes an insertion hole in which the bolt is loosely fitted; and

a first gap is defined between a wall of the cover, which defines the insertion hole, and the bolt in a direction perpendicular to an axial direction of the bolt and is smaller than a second gap defined between an inner periphery of the cover, which defines the cover recess, and the valve mechanism in the perpendicular direction.

2. The valve device according to claim 1 , wherein:

the gas passage includes a supply passage through which the gas is supplied from a gas tank to the valve mechanism, and an outlet passage through which the gas is supplied from the valve mechanism to a supply destination;

the supply passage opens into the accommodation recess, and the outlet passage opens in a bottom portion of the accommodation recess;

the valve mechanism includes a sleeve including a cylindrical portion and a bottom portion, a movable core provided in the cylindrical portion so as to be movable in an axial direction of the cylindrical portion, a fixed core fixed to a portion of the cylindrical portion that is closer to an opening of the cylindrical portion than the movable core is, and the solenoid provided on an outer periphery of the cylindrical portion;

the sleeve includes a communicating groove that communicates with the supply passage, an introduction passage that provides communication between the communicating groove and an inside of the cylindrical portion, and a lead-out passage that provides communication between the inside of the cylindrical portion and the outlet passage;

the communicating groove opens outwardly in a radial direction of the cylindrical portion, and extends in a circumferential direction of the cylindrical portion; and

the valve mechanism is accommodated in the accommodation recess such that the introduction passage is positioned away from a position of an opening of the supply passage in the accommodation recess in the circumferential direction.

3. The valve device according to claim 2 , wherein:

the solenoid is provided with a connecting line that extends from the portion of the solenoid, which protrudes from the accommodation recess; and

the valve mechanism includes a position holding member that holds the solenoid and the sleeve such that a positional relationship in the circumferential direction between the introduction passage and the connecting line satisfies a predetermined assembled positional relationship.

4. The valve device according to claim 2 , wherein a marker is provided on an outer periphery of the sleeve at a position corresponding to the introduction passage.