Vehicular panel structure

1. A vehicular panel structure comprising:

an inner panel disposed on an inner side of a vehicle;

an outer panel disposed on an outer side of the inner panel, having a linear expansion coefficient different from a linear expansion coefficient of the inner panel, and having an adhesive surface joined by an adhesive to an adhesive surface of the inner panel; and

an affixed member affixed to a part of the adhesive surface of the inner panel or the adhesive surface of the outer panel, the affixed member being configured to adhere less to the adhesive than to the adhesive surface of the inner panel or the adhesive surface of the outer panel to which the affixed member is affixed, wherein:

the inner panel and the outer panel constitute a door of the vehicle; and

the affixed member is disposed in a lower end portion of the door in an up-down direction of the vehicle.

2. The vehicular panel structure according to claim 1 , wherein:

the adhesive causes an outer edge of the inner panel and an outer edge of the outer panel to adhere to each other; and

the affixed member is disposed at a part of the outer edge of the inner panel or the outer edge of the outer panel.

3. The vehicular panel structure according to claim 1 , wherein:

a stepped portion is disposed on at least a part of the inner panel and the outer panel; and

the affixed member is disposed adjacent to the stepped portion.

4. The vehicular panel structure according to claim 1 , wherein the affixed member is affixed to the outer panel side, the outer panel side being a design surface side.

5. A vehicular panel structure comprising:

an inner panel disposed on an inner side of a vehicle;

an outer panel disposed on an outer side of the inner panel, having a linear expansion coefficient different from a linear expansion coefficient of the inner panel, and having an adhesive surface joined by an adhesive to an adhesive surface of the inner panel; and

an affixed member affixed to a part of the adhesive surface of the inner panel or the adhesive surface of the outer panel, the affixed member being configured to adhere less to the adhesive than to the adhesive surface of the inner panel or the adhesive surface of the outer panel to which the affixed member is affixed,

wherein the affixed member is a resin-molded article and is provided with a plurality of planar joined portions and a plurality of recessed portions molded in an intermediate portion of the planar joined portions.

6. The vehicular panel structure according to claim 5 , wherein the joined portions of the affixed member are joined to the adhesive surface of the outer panel at a position of a rear side vertical wall portion of the outer panel adjacent to a stepped portion such that recessed parts of the recessed portions pass along an up-down direction of the vehicle.

7. A vehicular panel structure comprising:

an inner panel disposed on an inner side of a vehicle;

an outer panel disposed on an outer side of the inner panel, having a linear expansion coefficient different from a linear expansion coefficient of the inner panel, and having an adhesive surface joined by an adhesive to an adhesive surface of the inner panel; and

an affixed member affixed to a part of the adhesive surface of the inner panel or the adhesive surface of the outer panel, the affixed member being configured to adhere less to the adhesive than to the adhesive surface of the inner panel or the adhesive surface of the outer panel to which the affixed member is affixed,

wherein the affixed member is configured of a polypropylene resin.

8. A vehicular panel structure comprising:

an inner panel disposed on an inner side of a vehicle;

an outer panel disposed on an outer side of the inner panel, having a linear expansion coefficient different from a linear expansion coefficient of the inner panel, and having an adhesive surface joined by an adhesive to an adhesive surface of the inner panel; and

an affixed member affixed to a part of the adhesive surface of the inner panel or the adhesive surface of the outer panel, the affixed member being configured to adhere less to the adhesive than to the adhesive surface of the inner panel or the adhesive surface of the outer panel to which the affixed member is affixed,

wherein the affixed member is configured of a polyethylene.