Electric distribution box and method of assembling the same

1. An electric distribution box, comprising:

a distribution box body, in which interior parts are mounted, said interior parts including a first part and a second part; and

a cover, attached to the distribution box body to protect the interior parts,

wherein the cover is completely attachable to the distribution box body in a first position,

wherein the cover is provisionally attachable to the distribution box body in a second position different from the first position, and

wherein the positioning of said cover in said second provisional position indicates that said first part, and not said second part, is mounted in said distribution box body and wherein the positioning of said cover in said first position indicates that both of said first and second parts are mounted in the distribution box body.

2. The electric distribution box as set forth in claim 1 , wherein a mounting direction of the cover relative to the distribution box body when the cover is provisionally fixed to the distribution box body, is reverse to a mounting direction of the cover relative to the distribution box body when the cover is completely fixed to the distribution box body.

3. The electric distribution box as set forth in claim 1 , wherein the cover is formed with a first engaging portion;

wherein the distribution box body is formed with a first retaining portion; and

wherein the cover is provisionally fixed to the distribution box body by engaging the first engaging portion with the first retaining portion.

4. The electric distribution box as set forth in claim 1 , wherein the cover is formed with a first guide portion;

wherein the distribution box body is formed with a first receiving portion corresponding to the first guide portion;

wherein the first guide portion is guided into the first receiving portion at the time of provisionally fixing the cover to the distribution box body; and

wherein the first guide portion is guided into the first receiving portion at the time of completely fixing the cover to the distribution box body.

5. The electric distribution box as set forth in claim 1 , wherein the cover is formed with a first engaging portion;

wherein the distribution box body is formed with a first retaining portion; and

wherein the cover is completely fixed to the distribution box body by engaging the first engaging portion with the first retaining portion.

6. The electric distribution box as set forth claim 5 , wherein the first engaging portion is provided on a side wall of the cover; and

wherein the first retaining portion is provide on a side wall of the distribution box body.

7. The electric distribution box as set forth in claim 1 , wherein the cover is formed with a first guide portion;

wherein the distribution box body is formed with a first receiving portion corresponding to the first guide portion;

wherein the first guide portion is deviated from the first receiving portion at the time of provisionally fixing the cover to the distribution box body; and

wherein the first guide portion is guided into the first receiving portion at the time of completely fixing the cover to the distribution box body.

8. The electric distribution box as set forth in claim 7 , wherein the cover is formed with an engaging portion;

wherein the distribution box body is formed with a retaining portion;

wherein the cover is provisionally fixed to the distribution box body by engaging the engaging portion with the retaining portion;

wherein the engaging portion is provided on the first guide portion; and

wherein the retaining portion is provided on a side wall of the distribution box body.

9. The electric distribution box as set forth in claim 1 , wherein a wiring board having upstanding terminals and, an electronic unit including a connector having mating terminals corresponding to the terminals, are served as the interior parts; and

wherein the electronic unit is mounted on an upper side of the wiring board so that the terminals are electrically connected to the mating terminals, respectively.

10. The electric distribution box as set forth in claim 9 , wherein the terminals are formed respectively at one end portions of bus bars mounted on the wiring board, and the other end portions of the bus bars are connected to a wire installed on the wiring board so as to form electric circuits on the wiring board; and

wherein the connector mounted on the electronic unit is served as a PCB connector such that a part of the mating terminals of the connector are soldered to circuit conductors on a board of the electronic unit.

11. A method of assembling an electric distribution box, comprising the steps of:

mounting a first interior part in a distribution box body;

provisionally fixing a cover to the distribution box body to protect the interior part;

removing the cover from the distribution box body;

mounting a second interior part in the distribution box body; and

completely fixing the cover to the distribution box body, said steps being performed in the stated order.

12. The method as set forth in claim 11 , wherein a mounting direction of the cover relative to the distribution box body in the provisionally fixing step is reverse to a mounting direction of the cover relative to the distribution box body in the completely fixing step.