Disc brake caliper

1. A disc brake caliper comprising:

a caliper main body comprising:

a first portion;

a second portion facing the first portion;

a connecting portion connecting the first portion with the second portion such that a slit for arranging a disc rotor is defined between the first portion and the second portion, the connecting portion, the first portion and the second portion being formed as a single unitary member;

a first hole to which a banjo fixing member is to be attached; and

a second hole provided apart from the first hole and extending from the first portion to the connecting portion in an axial direction so as to at least partially overlap the slit in the connecting portion when viewed in a direction orthogonal to the axial direction; and

an insert member configured to be inserted into the second hole, the insert member extending from the first portion to the connecting portion in the axial direction so as to at least partially overlap the slit in the second hole, the second hole being provided outside the slit.

2. The disc brake caliper according to claim 1 , wherein

the caliper main body is made of a first material, and

the insert member is made of a second material harder than the first material.

3. The disc brake caliper according to claim 2 , wherein

the first material comprises an aluminum alloy, and

the second material comprises one of iron, titanium and stainless steel.

4. The disc brake caliper according to claim 1 , wherein

the second hole extends from the first portion to the connecting portion in the axial direction beyond a center plane defined at the slit and dividing the slit into halves.

5. The disc brake caliper according to claim 4 , wherein

the insert member extends from the first portion to the connecting portion in the axial direction beyond the center plane in a state where the insert member is provided in the second hole.

6. The disc brake caliper according to claim 4 , wherein

the second hole extends from the first portion to the second portion through the connecting portion in the axial direction beyond the slit.

7. The disc brake caliper according to claim 6 , wherein

the insert member extends from the first portion to the second portion through the connecting portion in the axial direction beyond the slit in a state where the insert member is provided in the second hole.

8. The disc brake caliper according to claim 1 , wherein

the second hole has an inner diameter greater than an inner diameter of the first hole.

9. The disc brake caliper according to claim 1 , wherein

the caliper main body further comprises

a first recess provided on the first portion to arrange a first piston, the first recess facing the slit,

a second recess provided on the second portion to arrange a second piston, the second recess facing the slit and the first recess, and

a fluid passage connecting the first hole, the first recess and the second recess.

10. The disc brake caliper according to claim 9 , wherein

the second hole is configured without being in fluid communication with the fluid passage.

11. The disc brake caliper according to claim 9 , wherein

the first recess defines a first movement axis along which the first piston moves, and

the second hole is configured to be parallel to the first movement axis.

12. The disc brake caliper according to claim 11 , wherein

the second recess defines a second movement axis along which the second piston moves, the second movement axis being coaxial with or parallel to the first movement axis.

13. The disc brake caliper according to claim 9 , wherein

the second hole is arranged at an opposite side of the first hole with respect to the first recess and the second recess.

14. The disc brake caliper according to claim 1 , wherein

the second hole includes an internal thread, and

the insert member includes an external thread and is configured to be screwed into the second hole.

15. The disc brake caliper according to claim 1 , wherein

the insert member is configured to be press-fitted into the second hole.

16. The disc brake caliper according to claim 1 , wherein

the insert member is configured to be detachably inserted into the second hole.

17. The disc brake caliper according to claim 1 , wherein

the second hole includes an end opening which is provided on the first portion, and a bottom opposite to the end opening.

18. The disc brake caliper according to claim 17 , further comprising:

a fixing portion provided on the second portion and configured to be detachably fixed to a bicycle frame.

19. The disc brake caliper according to claim 1 , wherein

the insert member includes a shaft portion configured to be inserted into the second hole and to be at least partially a cylindrical shape.

20. The disc brake caliper according to claim 1 , wherein

the insert member includes a shaft portion configured to be inserted into the second hole in the axial direction, and

the shaft portion is provided outside the slit.

21. The disc brake caliper according to claim 1 , wherein

the first hole extends in the axial direction.

22. The disc brake caliper according to claim 21 , wherein

the first hole is provided outside the slit.

23. The disc brake caliper according to claim 1 , wherein

the slit is provided between the first hole and the second hole.

24. The disc brake caliper according to claim 1 , wherein

the second hole includes a bottomed hole.

25. The disc brake caliper according to claim 1 , wherein

the first hole includes a bottomed hole.

26. The disc brake caliper according to claim 9 , wherein

the fluid passage directly extends from the first hole.