Vehicle body front structure

1. A vehicle body front structure in which a pair of front side frames are provided on left and right sides of the vehicle, an upper member is provided on an upper outer side of each front side frame, and a front bulkhead is connected to the pair of front side frames and a pair of upper members,

wherein the front bulkhead comprises:

a side stay made of a resin and connected to a front end of the front side frame;

an upper side beam made of a metal, extending from the side stay to the upper member, and having a rear end connected to the upper member;

an upper beam made of a metal and detachably connected to the side stay in a state in which an end is overlaid on a front end of the front side frame above the side stay; and

a hood lock device provided on the upper beam and configured to lock a striker of a hood,

wherein on the upper beam,

the upper member extends from an upper side of the front side frame to a front side of a vehicle body so as to be curved downward, and a front end of the hood is arranged above the front bulkhead,

wherein the vehicle body front structure further comprises:

a headlight provided under the hood and on the front side of the front bulkhead in the vehicle body; and

a fender with a front end provided under a rear end of the headlight,

wherein a positioning bracket is provided on a convex curved portion extending to be curved downward of the upper beam,

wherein the positioning bracket comprises:

a reference surface arranged substantially horizontally above the curved portion and including a front bulkhead attachment reference hole, a headlight attachment reference hole, a hood attachment reference hole, and a fender attachment reference hole;

a front leg portion extending from a front end of the reference surface downward to the curved portion and joined to the curved portion; and

a rear leg portion formed to be shorter than a leg length of the front leg portion and joined to the curved portion in a state in which the rear leg portion extends from a rear end of the reference surface downward to the curved portion, and

wherein the reference surface is supported above the curved portion by the front leg portion and the rear leg portion.

2. The vehicle body front structure according to claim 1 , further comprising hood hinges arranged to a rear end of the hood and rear ends of the pair of upper members so as to pivotally connecting the rear end of the hood to the rear ends of the pair of upper members,

wherein another hood attachment reference hole is formed between the hood hinge and the hood attachment reference hole of the upper member, and

four points corresponding to the pair of hood attachment reference holes and the pair of other hood attachment reference holes serve as references to position the hood.

3. The vehicle body front structure according to claim 1 , further comprising a hood cushion intervening between the upper side beam and the hood and configured to define a height of the hood,

wherein a headlight attachment hole is formed in the upper side beam on an inner side of the headlight attachment reference hole in a vehicle width direction,

wherein the headlight comprises:

an upper outer attachment piece extending from an upper portion of the rear end of the headlight up to the headlight attachment reference hole and positioned by the headlight attachment reference hole; and

an upper inner attachment piece extending from an upper portion on an inner side of the rear end of the headlight in the vehicle width direction up to the headlight attachment hole, placed on the upper side beam, and configured to be adjustable with respect to the headlight attachment hole.

4. The vehicle body front structure according to claim 2 , further comprising a hood cushion intervening between the upper side beam and the hood and configured to define a height of the hood,

wherein a headlight attachment hole is formed in the upper side beam on an inner side of the headlight attachment reference hole in a vehicle width direction,

wherein the headlight comprises:

an upper outer attachment piece extending from an upper portion of the rear end of the headlight up to the headlight attachment reference hole and positioned by the headlight attachment reference hole; and

an upper inner attachment piece extending from an upper portion on an inner side of the rear end of the headlight in the vehicle width direction up to the headlight attachment hole, placed on the upper side beam, and configured to be adjustable with respect to the headlight attachment hole.