OPPOSED-PISTON TYPE DISC BRAKE DEVICE
FIG11 is a cross-sectional view of a part of FIG4 obtained by cutting a peripheral portion of a third portion with a virtual plane that contains a central axis of an outer guide pin
The third guide portion 55 is disposed at the same position as the first guide portion 53 in the circumferential direction, and supports the clamp member 41 to be axially displaceable relative to the caliper 8 together with the first guide portion 53 and the second guide portion 54. As illustrated in FIG11, the third guide portion 55 includes a support tubular portion 66 provided in the outer body 13 and an outer guide pin 67 fixed to the clamp member 41. The support tubular portion 66 is provided on a radial outer side of the rotation-in outer cylinder 18a in the outer body 13. An axial inner side portion of the outer guide pin 67 is fixed to the pressing portion 43 of the clamp member 41; an axial outer side portion thereof is inserted into the support tubular portion 66 to be slidable (relative displacement) in the axial direction. Therefore, the outer guide pin 67 is disposed (bridged) between the outer body 13 and the pressing portion 43 in the axial direction. The axial inner side portion of the outer guide pin 67 is screwed into a female screw hole 68 opened to an axial outer side surface of the pressing portion 43. A central axis of the outer guide pin 67 is parallel to the central axis of the housing hole 50. The central axis of the outer guide pin 67 and the central axis of the housing hole 50 are in the same position in the circumferential direction and in different positions in the radial direction.
cross-sectional view
24
small diameter tubular portion
67
outer guide pin
14
inner body
77
electric drive device
11
pistons piston
65
dust cover
62
inner guide pin
69
body
52
cylindrical portion
16
intermediate coupling portion
66
support tubular portion
47
arm
54
second guide portion
68
female screw hole
13
outer body
['1. An opposed-piston type disc brake device comprising: a caliper including an outer body and an inner body which are disposed on two sides of a rotor in an axial direction of the rotor and in which cylinders are respectively provided, and a pair of coupling portions which connect two circumferential side portions of the outer body and the inner body, and configured to be fixed to a suspension device; a plurality of pistons respectively fitted in the cylinders; a pair of pads, disposed on two sides of the rotor in the axial direction, and supported so as to be displaced relative to the caliper in the axial direction; and a parking mechanism portion including a clamp member and a thrust generating mechanism, wherein the clamp member includes a pressing portion on an axial outer side portion and a clamp base portion on an axial inner side portion, the clamp member is disposed between the pair of coupling portions in a circumferential direction, crosses the pair of pads and the inner body provided between the pressing portion and the clamp base portion from radially outside, and is supported to the caliper so as to be displaced relative to the caliper in the axial direction, the thrust generating mechanism includes an inner displacement member which is supported on the clamp base portion and is configured to be displaced axially inwardly relative to the caliper during braking operation, and an outer displacement member which is disposed in one of the cylinders provided in the inner body and is configured to be displaced axially outward relative to the caliper during braking operation, the cylinders are configured to receive a pressure oil so that a braking force by a service brake is generated, and the thrust generating mechanism is configured to be operated so that a braking force by a parking brake is generated, and a guide cylinder extending axially inward from an opening edge portion of the cylinder in which the outer displacement member is disposed is provided in the inner body at an axial inner side portion of the inner body, the clamp base portion includes a housing hole opened to an axial outer side of the clamp base portion in which the inner side displacement member is disposed, and the guide cylinder is fitted into the housing hole so as to relatively move in the axial direction, to form a first guide portion which supports the clamp member so that the clamp member is displaced relative to the cylinder in the axial direction.', '5. The opposed-piston type disc brake device according to any one of claims 1 to 4, further comprising: a dust cover bridged between the outer peripheral surface of the guide cylinder and an opening of the housing hole.', '6. The opposed-piston type disc brake device according to any one of claims 1 to 5, further comprising: a second guide portion disposed in a position deviated from the first guide portion  in the circumferential direction, wherein the second guide portion supports the clamp member so that the clamp member is displaced relative to the caliper in the axial direction together with the first guide portion, and includes an inner guide pin disposed between the inner body and the clamp base portion in the axial direction.', '9. The opposed-piston type disc brake device according to claim 7 or 8, wherein the caliper includes an intermediate coupling portion that axially connects a circumferential intermediate portion of the outer body and a circumferential intermediate portion of the inner body, and the inner guide pin is fixed at a same position as the intermediate coupling portion in the circumferential direction.', '10. The opposed-piston type disc brake device according to any one of claims 1 to 9, further comprising: a third guide portion, wherein the third guide portion supports the clamp member so that the clamp member is displaced relative to the caliper in the axial direction together with the first guide portion, and includes an outer guide pin disposed between the outer body and the pressing portion in the axial direction.', '16. The opposed-piston type disc brake apparatus according to any one of claims 1 to 15, wherein the clamp base portion includes an electric drive device configured to operate the  thrust generating mechanism.']