Sanitary washing apparatus

1. A sanitary washing apparatus, comprising:

a toilet bowl with a pair of first through-holes and a second through-hole that are formed on an upper surface thereof;

a base plate that has a pair of mounting holes that corresponds to the pair of first through-holes and is mounted on the upper surface of the toilet bowl by inserting fastening members mounted on the pair of mounting holes through the pair of first through-holes; and

a body part that incorporates a functional component that includes a washing nozzle, and is mounted on the toilet bowl via the base plate, wherein

the second through-hole is a through-hole for passing a water supply hose and an electrical power supply cord that are connected to the body part and is arranged around the pair of first through-holes,

a mounting part for the body part is formed only between the pair of mounting holes on the base plate and

the base plate does not plug the second through-hole.

2. The sanitary washing apparatus according to claim 1 , wherein the body part is slid relative to the base plate and thereby mounted on the mounting part of the base plate, and the mounting part includes:

a pair of linear grooves that extend in a mounting direction of the body part and open on a front side in the mounting direction and an upper side thereof; and

a pair of first engagement recesses that are provided on side surfaces of the pair of linear grooves, open on a front side in the mounting direction and a side of the linear grooves, and are plugged on an upper side thereof.

3. The sanitary washing apparatus according to claim 2 , wherein

the mounting part includes a press fit protrusion that is provided on a side surface of the pair of linear grooves, and

among both left and right side surfaces of the linear grooves, the first engagement recess is formed on a side surface on a center side of the base plate and the press fit protrusion is formed on a side surface on an outer side thereof.

4. The sanitary washing apparatus according to claim 2 , wherein

the mounting part includes a pair of second engagement recesses that are provided on a surface of the pair of linear grooves on a back side in the mounting direction, open on a front side in the mounting direction, and are plugged on an upper side thereof.

5. The sanitary washing apparatus according to claim 4 , further comprising:

a third engagement recess that is formed between the pair of linear grooves, opens on a front side in the mounting direction, and is plugged on an upper side thereof, wherein

the pair of second engagement recesses is formed on a back side in the mounting direction with respect to a center of the base plate, and

the third engagement recess is formed on a front side in the mounting direction with respect to the center of the base plate.

6. The sanitary washing apparatus according to claim 5 , wherein

the mounting part includes a pair of hook-like grooves formed between the pair of linear grooves, and

the third engagement recess is provided on a surface of one hook-like groove among the pair of hook-like grooves on a back side in the mounting direction.

7. The sanitary washing apparatus according to claim 1 , wherein

the base plate includes

a pair of bolts, and

a pair of positioning plates that have insertion holes for the bolts at positions shifting from a center thereof and are mounted on the mounting holes, thereby positioning the bolts in the mounting holes,

the pair of mounting holes has a width to communicate with the insertion holes in any case among a case where the positioning plates are mounted in a first direction with respect to the mounting holes and a case where it is mounted in a second direction provided by rotating the first direction by 180°.