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There is provided a caliper for an opposed piston type disc brake, including: an inner body including an inner cylinder portion; an outer body including an outer cylinder portion; and a rotation-in side connecting portion and a rotation-out side connecting portion. The end portions on both circumferentially outer sides of the outer body are connected to the rotation-in side connecting portion and the rotation-out side connecting portion, and the outer body includes a band-shaped reinforcing rib that covers a bottom portion of the outer cylinder portion from an axially outer side so as to cross the bottom portion in a circumferential direction. The reinforcing rib includes a bottomed or bottomless cut-out portion recessed in the axial direction on at least one of both circumferentially outer side portions.

Titel:	CALIPER FOR OPPOSED PISTON TYPE DISC BRAKE
Link:	Zum Volltext
Veröffentlichung:	2023
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20230341016 Publication Date: October 26, 2023 Appl. No: 18/133126 Application Filed: April 11, 2023 Assignees: AKEBONO BRAKE INDUSTRY CO., LTD. (Tokyo, JP) Claim: 1. A caliper for an opposed piston type disc brake, comprising: an inner body including an inner cylinder portion and disposed on an axially inner side of a rotor; an outer body including an outer cylinder portion and disposed on an axially outer side of the rotor; and a rotation-in side connecting portion and a rotation-out side connecting portion which are disposed radially outward of an outer circumferential edge of the rotor and which connect end portions on both circumferentially outer sides of the inner body and end portions on both circumferentially outer sides of the outer body in an axial direction, wherein the end portions on both circumferentially outer sides of the outer body are connected to the rotation-in side connecting portion and the rotation-out side connecting portion, and the outer body includes a band-shaped reinforcing rib that covers a bottom portion of the outer cylinder portion from an axially outer side so as to cross the bottom portion in a circumferential direction, and wherein the reinforcing rib includes a bottomed or bottomless cut-out portion recessed in the axial direction on at least one of both circumferentially outer side portions. Claim: 2. The caliper for an opposed piston type disc brake according to claim 1, wherein the cut-out portion has a shape elongated in the circumferential direction, wherein the reinforcing rib includes side ribs extending in the circumferential direction on both radial sides of the cut-out portion, and wherein a total of two or more of the side ribs are provided. Claim: 3. The caliper for an opposed piston type disc brake according to claim 2, wherein each of the side ribs extends in a direction closer to a central axis of the outer cylinder portion as each of the side ribs is toward a circumferentially inner side. Claim: 4. The caliper for an opposed piston type disc brake according to claim 3, wherein the cut-out portion is provided on a radially intermediate portion of the reinforcing rib, wherein the side rib disposed on a radially outer side of the cut-out portion is inclined in a direction toward a radially inner side as the side rib is toward the circumferentially inner side, and wherein the side rib disposed on a radially inner side of the cut-out portion is inclined in a direction toward a radially outer side as the side rib is toward the circumferentially inner side. Claim: 5. The caliper for an opposed piston type disc brake according to claim 4, wherein the side rib disposed on the radially inner side of the cut-out portion is connected to an end portion on a circumferentially outer side of the rotation-in side connecting portion or the rotation-out side connecting portion. Claim: 6. The caliper for an opposed piston type disc brake according to claim 2, wherein a radial thickness of the side rib disposed on a radially outer side of the cut-out portion is larger than a radial thickness of the side rib disposed on a radially inner side of the cut-out portion. Claim: 7. The caliper for an opposed piston type disc brake according to claim 2, wherein when viewed from a radially outer side, the side rib disposed on a radially inner side of the cut-out portion protrudes outward from the side rib disposed on a radially outer side of the cut-out portion. Claim: 8. The caliper for an opposed piston type disc brake according to claim 2, wherein the reinforcing rib has a design surface having a flat surface shape formed by an axially outer side surface of the reinforcing rib on a circumferentially inner side portion thereof, and wherein the design surface and axially outer side surfaces of the side ribs are smoothly connected to each other without steps. Claim: 9. The caliper for an opposed piston type disc brake according to claim 2, wherein axially outer side surfaces of the side ribs are inclined in a direction toward an axially inner side as the axially outer side surfaces are toward a circumferentially outer side. Claim: 10. The caliper for an opposed piston type disc brake according to claim 2, wherein at least one of the side ribs includes a communication path through which brake oil is to pass. Claim: 11. The caliper for an opposed piston type disc brake according to claim 1, wherein one of the cut-out portion is provided on a radially intermediate portion of each of both circumferentially outer side portions of the reinforcing rib, wherein each of the cut-out portions has a substantially triangular shape when viewed in the axial direction, and a radial width thereof increases toward a circumferentially outer side, and wherein a portion of the reinforcing rib excluding the cut-out portions has a substantially X-shape when viewed in the axial direction. Claim: 12. The caliper for an opposed piston type disc brake according to claim 11, wherein an axial thickness of the portion of the reinforcing rib excluding the cut-out portions is larger at a portion deviated outward in the circumferential direction from the outer cylinder portion than at a portion covering the bottom portion of the outer cylinder portion. Claim: 13. The caliper for an opposed piston type disc brake according to claim 1, wherein the cut-out portion is bottomed. Claim: 14. The caliper for an opposed piston type disc brake according to claim 1, wherein the cut-out portion is bottomless. Current International Class: 16

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CALIPER FOR OPPOSED PISTON TYPE DISC BRAKE