# US 2025/0095620 A1 · Soundproof heat-dissipation cover, cover member, and manufacturing method of soundproof heat dissipation cover > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0095620 A1 - Document ID: US20250095620A1 - Status: Published application - Kind: A1 - Application number: 18/969,215 - Filed: 2024-12-04 - Published: 2025-03-20 - Earliest claimed: 2023-04-27 - Assignees: Sumitomo Riko Company Limited - Applicants: Sumitomo Riko Company Limited - Inventors: Toshiki Matsuoka; Nobuyoshi Seto; Yusuke Hayazaki; Yukio Hatanaka; Akio Yabu; Takashi Miyanaga - Web page: https://patentgrep.com/patent/US20250095620A1 ## CPC - G10K 11/168: Plural layers of different materials, e.g. sandwiches - B29C 45/263: {with mould wall parts provided with fine grooves or impressions, e.g. for record discs} - B60R 13/0838: {for engine compartments} - B60R 13/0876: {for mounting around heat sources, e.g. exhaust pipes} - F28F 13/185: {Heat-exchange surfaces provided with microstructures or with porous coatings} - G10K 11/16: Methods or devices for protecting against, or for damping, noise or other acoustic waves in general (G10K11/36 takes precedence) - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR - 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) - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) ## Abstract A soundproof heat-dissipation cover (3) that covers a target object (2), and includes a heat-dissipation contact surface (10) having a contact part (12) contacting the target object (2). The density is 0.1 g/cm3 to 2.0 g/cm3, the thermal conductivity is 0.1 W/m to 2.0 W/mK, and the maximum height roughness (Rz) of the heat-dissipation contact surface (10) is 50 μm to 300 μm. With an air layer formed between the surface of the target object (2) and the heat-dissipation contact surface (10) of the soundproof heat dissipation cover (3), the contact area between the surface of the target object (2) and the heat-dissipation contact surface (10) of the soundproof heat-dissipation cover (3) can be reduced, the vibration received by the soundproof heat-dissipation cover (3) from the surface of the target object (2) can be suppressed, and the secondary radiation sound from the soundproof heat-dissipation cover (3) can be suppressed. ## Claims ### Claim 1 A soundproof heat-dissipation cover, covering a target object and comprising: a heat-dissipation contact surface, having a contact part that comes into contact with the target object, wherein a density of the soundproof heat-dissipation cover is 0.1 g/cm3 to 2.0 g/cm3, a thermal conductivity of the soundproof heat-dissipation cover is 0.1 W/mK to 2.0 W/mK, and a maximum height roughness of the heat-dissipation contact surface is 50 μm to 300 μm. ### Claim 2 (depends on 1) The soundproof heat-dissipation cover according to claim 1, wherein the maximum height roughness of the heat-dissipation contact surface is 60 μm to 250 μm. ### Claim 3 (depends on 2) The soundproof heat-dissipation cover according to claim 2, wherein the maximum height roughness of the heat-dissipation contact surface is 110 μm to 200 μm. ### Claim 4 (depends on 1) The soundproof heat-dissipation cover according to claim 1, wherein the soundproof heat-dissipation cover is formed in a sheet-like shape by using foamed resin, and further comprises: a foam layer having bubbles; and a skin layer formed outward in a thickness direction relative to the foam layer and having fewer bubbles than the bubbles of the foam layer, wherein the heat-dissipation contact surface is formed on the skin layer. ### Claim 5 (depends on 1) The soundproof heat-dissipation cover according to claim 1, wherein the soundproof heat-dissipation cover is formed in a sheet-like shape, the soundproof heat-dissipation cover further comprises a thermal conductive material that extends along a thickness direction. ### Claim 6 (depends on 1) The soundproof heat-dissipation cover according to claim 1, wherein the thermal conductivity is 0.5 W/mK to 0.7 W/mK. ### Claim 7 (depends on 1) A cover member, comprising: the soundproof heat-dissipation cover according to claim 1 and comprising a heat-dissipation surface on a side opposite to the heat-dissipation contact surface; and a reinforcement member, formed of a material having a higher hardness than the soundproof heat-dissipation cover, and covering the soundproof heat-dissipation cover from a side of the heat-dissipation surface of the soundproof heat-dissipation cover, the soundproof heat-dissipation cover further comprises: a pair of first attachment parts, formed at positions near two ends in a first direction along the heat-dissipation contact surface, and a heat-dissipation region, formed between the pair of first attachment parts, and the reinforcement member comprises: a pair of second attachment parts, formed at positions near two ends in the first direction and respectively attached to the pair of first attachment parts; and a bridging part, bridging the pair of second attachment parts and having a plurality of through holes, wherein the heat-dissipation contact surface is formed at a position that overlaps with at least the heat-dissipation region in a thickness direction of the soundproof heat-dissipation cover. ### Claim 8 (depends on 7) The cover member according to claim 7, wherein a plurality of strips arranged at intervals are formed on the heat-dissipation surface of the soundproof heat-dissipation cover, and in a state in which the pair of second attachment parts of the reinforcement member are attached to the pair of first attachment parts of the soundproof heat-dissipation cover, the strips of the soundproof heat-dissipation cover abut against the bridging part of the reinforcement member. ### Claim 9 (depends on 1) A manufacturing method of the soundproof heat-dissipation cover according to claim 1, the manufacturing method comprising: a molding process of molding the soundproof heat-dissipation cover by injecting resin into a mold having a rough surface for molding the heat-dissipation contact surface and then curing the resin, wherein a maximum height roughness of the rough surface is 50 μm to 300 μm. ### Claim 10 (depends on 9) The manufacturing method of the soundproof heat-dissipation cover according to claim 9, wherein, in the molding process, a shape of the rough surface of the mold is transferred to the heat-dissipation contact surface of the soundproof heat-dissipation cover. ### Claim 11 (depends on 9) The manufacturing method of the soundproof heat-dissipation cover according to claim 9, wherein, in the molding process, the maximum height roughness of the heat-dissipation contact surface of the soundproof heat-dissipation cover is formed to be greater than the maximum height roughness of the rough surface of the mold. ### Claim 12 (depends on 9) The manufacturing method of the soundproof heat-dissipation cover according to claim 9, further comprising: a roughening process of roughening at least a portion of an inner surface of the mold. ### Claim 13 (depends on 12) The manufacturing method of the soundproof heat-dissipation cover according to claim 12, wherein, in the roughening process, at least a portion of the inner surface of the mold is roughened by blast processing. ### Claim 14 (depends on 12) The manufacturing method of the soundproof heat-dissipation cover according to claim 12, wherein the mold is formed of metal or resin, and in the roughening process, at least a portion of the inner surface of the mold is roughened by embossing processing. ### Claim 15 (depends on 9) The manufacturing method of the soundproof heat-dissipation cover according to claim 9, wherein, in the molding process, a foaming process of foaming resin is executed. ### Claim 16 (depends on 9) The manufacturing method of the soundproof heat-dissipation cover according to claim 9, wherein the resin molded in the molding process comprises a thermal conductive material.