Utility vehicle

1. A utility vehicle, comprising: a front seat; a rear seat; and a cargo bed provided in order from the front side,

wherein the cargo bed includes left and right fixed side walls, a front wall movable into a riding space on the front side of the cargo bed, and left and right expansion side walls expandable into the riding space, the cargo bed is changeable between an expanded state in which the cargo bed is expanded forward into the riding space and a non-expanded state in which the cargo bed is not expanded in the riding space,

lock devices for fixing the front wall to a vehicle body at a position in the expanded state and at a position in the non-expanded state are provided on the left and right sides of the front wall, and

the lock devices are displaceable between a fixing position where the lock devices are placed on the outer side in the vehicle width direction of the cargo bed for fixing the front wall and a non-fixing position where the lock devices are placed on the inner side in the vehicle width direction of the cargo bed.

2. The utility vehicle according to claim 1 ,

wherein a plurality of rollers is provided in a lower end of the front wall.

3. The utility vehicle according to claim 1 ,

wherein the lock devices are placed on the outer side in the vehicle width direction of the expansion side walls at the fixing position in the expanded state and the non-expanded state.

4. The utility vehicle according to claim 1 ,

wherein positioning holes into which positioning pins of the lock devices are inserted at the fixing position are formed in a bottom wall of the cargo bed.

5. The utility vehicle according to claim 1 ,

wherein lock parts of the lock devices are biased downward by elastic bodies.

6. The utility vehicle according to claim 1 ,

wherein the lock parts of the lock devices are pivoted by substantially 90 degrees between the fixing position and the non-fixing position.