# US 10,865,888 B2 · Connection fitting and heat management module including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,888 B2 - Document ID: US10865888B2 - Status: Granted - Kind: B2 - Application number: 16/080,081 - Filed: 2017-02-03 - Published: 2019-03-21 - Granted: 2020-12-15 - Earliest claimed: 2016-02-26 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Uli Grosskopf; Michael Weiss - Web page: https://patentgrep.com/patent/US10865888B2 ## CPC - F16K 5/201: {with the housing or parts of the housing mechanically pressing the seal against the plug} - F16K 5/0689: {between housing and plug} - F01P 2007/146: {using valves} - 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)} - 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) ## Abstract A connection fitting (8) of a heat management module (1) of an internal combustion engine can be inserted into a receptacle hole (9) in a housing (2) of the heat management module. The aim is to be able to bias a sealing ring (16) of the nozzle against a rotary valve (3) using a compression spring element (13). The connection fitting is to be provided with a stop (24) that limits the longitudinal movement of the sealing ring in the direction of the rotary valve. ## Claims ### Claim 1 A connection fitting of a heat management module of an internal combustion engine, said connection fitting being adapted to be inserted into a receptacle hole of a housing of the heat management module and comprising a sealing ring and a compression spring, the sealing ring includes a first axial end that is adapted to be biased against a rotary valve by the compression spring, the sealing ring includes a stop defined at a second axial end, opposite from the first axial end that limits a longitudinal movement of the sealing ring in a direction of the rotary valve, the sealing ring defining a cylindrical recess defined on a radially inner surface of the sealing ring in which a ring-shaped grooved ring is held, the ring-shaped groove ring including a sealing lip extending radially inward and contacting a hollow cylindrical fitting section of the connection fitting. ### Claim 2 (depends on 1) The connection fitting according to claim 1, further comprising a retaining element fixed on the connection fitting, from which a radial projection forming a secondary stop extends, which engages behind the stop of the sealing ring. ### Claim 3 (depends on 2) The connection fitting according to claim 2, wherein the retaining element is constructed as a retaining bushing that is fixed on a radially outer surface of a projection that extends in an axial direction. ### Claim 4 (depends on 2) The connection fitting according to claim 2, wherein the radial projection is constructed as a first collar that is at least partially circumferential and points radially inward. ### Claim 5 (depends on 2) The connection fitting according to claim 2, wherein the section of the sealing ring is constructed as a second collar pointing radially outward. ### Claim 6 (depends on 3) The connection fitting according to claim 3, wherein the hollow cylindrical fitting section includes a flange pointing radially outward and a sleeve with a radial distance to an outer lateral surface of the fitting section extends from the flange as a projection, on which the retaining bushing is mounted. ### Claim 7 (depends on 6) The connection fitting according to claim 6, wherein the retaining bushing is pressed onto the sleeve. ### Claim 8 (depends on 6) The connection fitting according to claim 6, further comprising a radial sealing element that encloses the sleeve arranged axially between the flange and the retaining bushing. ### Claim 9 (depends on 1) The heat management module comprising the housing and the rotary valve that is rotatably supported in the housing, and the connection fitting of claim 1 arranged on the housing, with a coolant flow through the connection fitting being controllable by the rotary valve. ### Claim 10 A connection fitting of a heat management module of an internal combustion engine, said connection fitting comprising: a fitting body that is insertable into a receptacle hole of a housing of the heat management module; a sealing ring that is movable in an axial direction relative to the fitting body, the sealing ring including a first axial end that is adapted to be biased against a rotary valve by a compression spring, and a second axial end, opposite from the first axial end that includes a stop that limits a longitudinal movement of the sealing ring in the axial direction, the sealing ring defining a cylindrical recess defined on a radially inner surface of the sealing ring in which a ring-shaped grooved ring is held, the ring-shaped groove ring including a sealing lip extending radially inward and contacting a hollow cylindrical fitting section of the connection fitting; and the compression spring biases the sealing ring in an axial direction away from the fitting body such that it is adapted to be pressed against the rotary valve of the heat management module. ### Claim 11 (depends on 10) The connection fitting of claim 10, further comprising a retaining element having a radial projection and being fixed on the fitting body, and the radial projection forms a secondary stop that engages behind the stop of the sealing ring. ### Claim 12 (depends on 11) The connection fitting of claim 11, wherein the retaining element comprises a retaining bushing that is fixed on the fitting body. ### Claim 13 (depends on 12) The connection fitting of claim 12, wherein the hollow cylindrical fitting section includes a flange that extends radially outward, a sleeve that is spaced apart radially from an outer lateral surface of the fitting section extends from the flange, and the retaining bushing is mounted on the sleeve. ### Claim 14 (depends on 13) The connection fitting of claim 13, wherein the retaining bushing is pressed onto the sleeve. ### Claim 15 (depends on 13) The connection fitting of claim 13, further comprising a radial sealing element that encloses the sleeve arranged axially between the flange and the retaining bushing. ### Claim 16 (depends on 13) The connection fitting of claim 13, wherein the compression spring is located between the cylindrical fitting section and the sleeve. ### Claim 17 (depends on 11) The connection fitting of claim 11, wherein the section of the sealing ring comprises a collar that extends radially outward.