# US 12,109,745 B2 · Insert sintered part and manufacturing method for same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,745 B2 - Document ID: US12109745B2 - Status: Granted - Kind: B2 - Application number: 18/330,063 - Filed: 2023-06-06 - Published: 2023-10-05 - Granted: 2024-10-08 - Earliest claimed: 2020-01-31 - Assignees: Diamet Corporation - Applicants: Diamet Corporation - Inventors: Shinichi Takezoe; Tsuneo Maruyama; Hideo Sakai - Web page: https://patentgrep.com/patent/US12109745B2 ## CPC - B29C 45/1459: {Coating annular articles} - B22F 5/10: of articles with cavities or holes, not otherwise provided for in the preceding subgroups - B22F 7/06: of composite workpieces or articles from parts, e.g. to form tipped tools {(B22F7/002 takes precedence)} - B22F 7/08: with one or more parts not made from powder {(B22F7/062 takes precedence)} - B29C 45/14065: {Positioning or centering articles in the mould} - B29C 45/14778: {the article consisting of a material with particular properties, e.g. porous, brittle} - B29C 45/26: Moulds - B29C 45/2616: {having annular mould cavities} - F16C 33/128: {Porous bearings, e.g. bushes of sintered alloy} - F16C 33/145: {of sintered porous bearings} - B29K 2705/00: Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts - B29L 2031/04: Bearings - F16C 2204/20: Alloys based on aluminium - F16C 2208/00: Plastics; Synthetic resins, e.g. rubbers - F16C 2220/04: by injection-moulding - F16C 2226/80: with splines, serrations or similar profiles to prevent movement between joined parts - F16C 2326/01: Parts of vehicles in general - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract By using a forming die having a fixed die and a movable die moving along a parting surface on the fixed die and by moving the movable die along the parting surface, to press and hold a sintered part between the movable die and the fixed die, to form a cavity around the sintered part except parts which abut on the fixed die and the movable die by the forming die, and to fill the cavity with melted material which becomes an exterior part, so that the sintered part and the exterior part are integrated by insert molding. ## Claims ### Claim 1 An insert sintered part comprising: a sintered part having a first end part and a second end part; and an exterior part which is formed integrally with an outer peripheral part of the sintered part, wherein the sintered part is a sintered bearing, the exterior part is formed of resin or metal, a parting line is provided on a ridge line intersecting an end surface of the exterior part which is positioned at one end part side of at least either one of the first end part and the second end part and an outer peripheral surface of the exterior part, and the resin or the metal leaks out in an axial direction of the sintered bearing to form the parting line. ### Claim 2 (depends on 1) The insert sintered part according to claim 1, wherein the first end part of the sintered part protrudes from the exterior part, an outer-inclined surface is formed on an outer peripheral surface of the first end part of the sintered part to be reduced in diameter toward the end surface of the first end part, and the outer-inclined surface has an exposed part in a tip end part thereof. ### Claim 3 (depends on 2) The insert sintered part according to claim 2, wherein a large-diameter part having a larger diameter than that of the first end part is formed on the outer peripheral part of the sintered part, and at least either of a groove or a protrusion bar along an axial direction on an outer peripheral surface of the large-diameter part and the groove or the protrusion bar along a radial direction on an end surface of the large-diameter part is formed. ### Claim 4 (depends on 2) The insert sintered part according to claim 2, wherein the sintered part is the sintered bearing having one penetrated hole which penetrates the first end part and the second end part. ### Claim 5 (depends on 1) The insert sintered part according to claim 1, wherein the sintered part has one penetrated hole which penetrates the first end part and the second end part, and an inner inclined surface is provided in the penetrated hole to be increased in a diameter toward at least either one end surface of an end part between the first end part and the second end part. ### Claim 6 (depends on 5) The insert sintered part according to claim 5, wherein a groove or a protrusion bar is formed on an outer peripheral part of the sintered part. ### Claim 7 (depends on 1) The insert sintered part according to claim 1, wherein the sintered part is a sintered pivot bearing formed in a solid state. ### Claim 8 (depends on 7) The insert sintered part according to claim 7, wherein a groove or a protrusion bar is formed on an outer peripheral part of the sintered part. ### Claim 9 (depends on 1) The insert sintered part according to claim 1, wherein the sintered part is the sintered bearing having one penetrated hole which penetrates the first end part and the second end part. ### Claim 10 (depends on 1) The insert sintered part according to claim 1, wherein a groove or a protrusion bar is formed on an outer peripheral part of the sintered part. ### Claim 11 An insert sintered part comprising: a sintered part having a first end part, a second end part and a large-diameter part; and an exterior part which is formed integrally with an outer peripheral part of the sintered part, wherein the first end part has an outer-inclined surface whose diameter gradually increases in an axial direction of the sintered part toward the large-diameter part, said outer-inclined surface being partially exposed, and a parting line is provided on a ridge line intersecting an end surface of the exterior part which is positioned at one end part side of the first end part and an outer peripheral surface of the exterior part.