# US 2017/0284243 A1 · Temperature sensitive valve mechanism > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284243 A1 - Document ID: US20170284243A1 - Status: Published application - Kind: A1 - Application number: 15/467,234 - Filed: 2017-03-23 - Published: 2017-10-05 - Earliest claimed: 2016-04-01 - Assignees: Yamada Manufacturing Co., Ltd. - Applicants: Yamada Manufacturing Co., Ltd. - Inventors: Junichi Miyajima; Kazuo Shoji; Yuya Kato - Web page: https://patentgrep.com/patent/US20170284243A1 ## CPC - F01M 5/007: {Thermostatic control} - F01M 1/16: Controlling lubricant pressure or quantity (rendering machines or engines inoperative or idling on lubricant pressure failure F01M1/22) - F01P 11/08: Arrangements of lubricant coolers (in lubrication apparatus F01M) - F16K 3/24: with cylindrical valve members - F16K 31/002: {actuated by temperature variation (thermo-electric F16K31/025)} - F01P 2025/40: Oil temperature - F01M: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A pump housing has a main oil passage, a return oil passage provided substantially in parallel with the main oil passage, and a valve insertion hole extending across the main oil passage such that a closed fore end of the valve insertion hole reaches in the vicinity of the return oil passage. The valve insertion hole has a female screw formed at an open end thereof, and a through-hole is formed in the pump housing, having one end connected to the valve insertion hole at a portion adjacent to the closed fore end thereof and an opposite end opened to the outside of the pump housing. With the valve insertion hole thus provided, a temperature sensitive valve mechanism can be readily inserted in the valve insertion hole at any time. ## Claims ### Claim 1 A temperature sensitive valve mechanism mounted in a structural member having an oil passage so as to release a lubricating oil to the outside of the oil passage in response to a temperature of the lubricating oil flowing in the oil passage, the temperature sensitive valve mechanism comprising: a fixing part fixed to the structural member; a thermoelement disposed in the oil passage and having a first end supported by or made in contact with the fixed part; a valve element fixed to a second opposite end of the thermoelement; a valve casing surrounding the valve element; and a connecting part extending from the fixing member in such a manner as to surround the valve element and supporting the valve casing, the connecting part having oil passage through-holes for allowing the lubricating oil to pass therethrough and hit on the thermoelement, wherein the valve casing has a discharge port adapted to be opened and closed by the valve element for releasing the lubricating oil therefrom to the outside of the oil passage. ### Claim 2 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the connecting part and the valve casing are formed integrally with each other. ### Claim 3 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the connecting part and the valve casing are separate members structurally independent from one another, and the valve casing is joined to the connecting part via a clenched portion or a screw-connected portion. ### Claim 4 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the connecting part is joined to the fixing part via a clenched portion or a screw-connected portion. ### Claim 5 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the connecting part is joined to the fixing part via a clenched portion, and the clenched portion is a portion joined by clenching performed to cause deformation over the entire periphery thereof. ### Claim 6 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the connecting part is joined to the fixing part via a circlip. ### Claim 7 (depends on 6) The temperature sensitive valve mechanism according to claim 6, wherein the groove width of a clip reception groove in which the circlip is received is set to be larger than a thickness of the circlip, and the circlip is in the form of a spring washer. ### Claim 8 (depends on 7) The temperature sensitive valve mechanism according to claim 7, wherein the connecting part has a plurality of through-holes provided along the clip reception groove. ### Claim 9 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the structural member, the valve casing and the connecting part are formed of aluminum alloys. ### Claim 10 (depends on 1) The temperature sensitive valve mechanism according to claim 1, wherein the structural member is a cylinder block of an engine, and the cylinder block has a wall or a plate disposed such that the lubricating oil discharged from the discharge port hits on the wall or the plate before dropping into an oil reservoir of the cylinder block.