Attachment structure

1. An attachment structure, comprising:

a bracket that is arranged around a steering wheel;

a rotary connector device that has an engagement portion for being directly and provisionally fixed to the bracket in a provisionally fixed state; and

a combination switch, that has one or more guide portions, for being slidably and directly retained to the bracket in the provisionally fixed state,

wherein the rotary connector device and the combination switch are completely fastened together with the bracket by a screw member from the provisionally fixed state,

wherein the bracket has a first face for attaching the rotary connector device and a second face for attaching the combination switch, the first face being opposite to the second face,

wherein the bracket includes a projected wall portion, the projected wall portion is projected from the second face toward the combination switch,

wherein the combination switch includes a recessed groove having a shape which corresponds to a shape of the projected wall portion, and

wherein one of the one or more guide potions is a protruding portion formed on a top face of the recessed groove, the protruding portion is engaged to an edge portion of the projected wall portion of the bracket.

2. The attachment structure according to claim 1 , wherein the screw member is disposed at a position at which the screw member is exposed in view from a front side when the steering wheel is turned by a predetermined angle from a neutral position.

3. The attachment structure according to claim 1 , wherein at least two of the one or more guide portions are arranged in a direction of sliding the bracket with respect to the combination switch.

4. The attachment structure according to claim 1 , wherein the recessed groove having the protruding portion is provided at a center of the combination switch;

wherein the projected wall portion has a slidable retaining portion for retaining the protruding portion; and

wherein the bracket has the projected wall portion, said projected wall portion is fitted into the recessed groove of the combination switch.

5. The attachment structure according to claim 1 , wherein the rotary connector device has a circular wall;

wherein the bracket has the projected wall portion, said projected wall portion has a hole portion corresponding to the circular wall; and

wherein recessed portions for engaging the circular wall are provided on both sides of the recessed groove of the combination switch.

6. The attachment structure according to claim 1 , wherein the combination switch has a containing portion for containing the engagement portion of the rotary connector device.

7. The attachment structure according to claim 1 , wherein two of the one or more guide portions of the combination switch are a pair of guide projected portions, the pair of guide projected portions are slidably and directly retained to both side edge portions of the bracket.