Structure of vehicle door

1. A vehicle door, comprising:

a door sash;

a bracket, which joins the door sash to an inner panel; and

a patch, which is joined to the bracket and the door sash and which sandwiches the door sash in cooperation with the bracket, thereby reinforcing the bracket,

wherein the door sash is sandwiched between the patch and the bracket.

2. The vehicle door according to claim 1 , wherein the door sash comprises a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction, and

wherein the bag part of the door sash is sandwiched in a vehicle front-rear direction by the bracket and the patch.

3. The vehicle door according to claim 1 , wherein the door sash comprises a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction and a design part that is positioned at a more vehicle exterior side than the bag part,

wherein the patch is joined to a vehicle exterior face of the design part,

wherein the bracket is joined to a vehicle interior face of the bag part, and

wherein the door sash is sandwiched in a vehicle width direction by the patch and the bracket.

4. The vehicle door according to claim 1 , wherein the door sash comprises:

a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction;

a design part that is positioned at a more vehicle exterior side than the bag part; and

a connection part that connects the bag part and the design part,

wherein a recess part is formed between the bag part and the design part, and includes a wall part, which is configured by a vehicle exterior face of the bag part and a vehicle interior face of the design part, and a bottom part, which is configured by the connection part, and

wherein the patch covers an opening of the recess part and is connected to the bag part.

5. The vehicle door according to claim 1 , wherein the door sash comprises a bag part configured by a first face and a second face, which extend in a vehicle width direction and face each other, and a third face and a fourth face, which extend in a vehicle front-rear direction and face each other, and the door sash comprises a design part,

wherein the bracket includes a fifth face that extends in the vehicle width direction, and the bracket includes a seventh face that extends from one side of the fifth face in the vehicle front-rear direction and a ninth face that extends from another side of the fifth face in the vehicle front-rear direction,

wherein the patch includes a sixth face that extends in the vehicle width direction, and the patch includes an eighth face that extends from one side of the sixth face in the vehicle front-rear direction and a tenth face that extends from another side of the sixth face in the vehicle front-rear direction.

6. The vehicle door according to claim 5 , wherein the seventh face that extends from said one side of the fifth face is joined to the eighth face that extends from said one side of the sixth face, and the ninth face that extends from said another side of the fifth face is joined to the tenth face that extends from said another side of the sixth face, so that the bracket and the patch are joined.

7. The vehicle door according to claim 5 , wherein the fifth face, which extends in the vehicle width direction, of the bracket and the sixth face, which extends in the vehicle width direction, of the patch are separated from each other, in the vehicle front-rear direction.

8. The vehicle door according to claim 1 , wherein a shape formed by the door sash and the bracket is a bent shape, as viewed from a vehicle width direction.

9. The vehicle door according to claim 5 , wherein the eighth face that extends from said one side of the sixth face is joined to a vehicle exterior face of the design part, so that the patch and the door sash are joined.

10. The vehicle door according to claim 5 , wherein the sixth face that extends in the vehicle width direction is joined to the second face, which extends in the vehicle width direction, of the bag part, so that the patch and the door sash are joined.

11. The vehicle door according to claim 5 , wherein the seventh face that extends from said one side of the fifth face is joined to a vehicle interior face of the design part of the door sash, so that the bracket and the door sash are joined.

12. The vehicle door according to claim 5 , wherein the ninth face that extends from said another side of the fifth face is joined to the vehicle interior face of the bag part, so that the bracket and the door sash are joined.

13. The vehicle door according to claim 5 , wherein the fifth face that extends in the vehicle width direction is joined to the first face, which extends in the vehicle width direction, of the bag part, so that the bracket and the door sash are joined.

14. The vehicle door according to claim 5 , wherein the seventh face that extends from said one side of the fifth face is joined to the eighth face that extends from said one side of the sixth face at two points.

15. The vehicle door according to claim 5 , wherein the ninth face that extends from said another side of the fifth face is joined to the tenth face that extends from said another side of the sixth face at one point.

16. The vehicle door according to claim 1 , wherein the door sash comprises a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction.

17. The vehicle door according to claim 1 , wherein the door sash comprises a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction and a design part that is positioned at a more vehicle exterior side than the bag part,

wherein the patch is joined to a vehicle exterior face of the design part, and

wherein the bracket is joined to a vehicle interior face of the bag part.

18. The vehicle door according to claim 1 , wherein the door sash comprises:

a bag part having a closed cross-sectional shape in a cross-sectional shape in a direction intersecting with a longitudinal direction;

a design part that is positioned at a more vehicle exterior side than the bag part; and

a connection part that connects the bag part and the design part.

19. The vehicle door according to claim 1 , wherein the door sash comprises a bag part configured by a first face and a second face, which extend in a vehicle width direction and face each other, and a third face and a fourth face, which extend in a vehicle front-rear direction and face each other.