# US 2002/0104511 A1 · Apparatus for controlling throttle valve and manufacturing method for the same and motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2002/0104511 A1 - Document ID: US20020104511A1 - Status: Published application - Kind: A1 - Application number: 10/062,519 - Filed: 2002-02-05 - Published: 2002-08-08 - Earliest claimed: 2001-02-08 - Assignees: Denso Corporation - Inventors: Katsuya Torii; Yutaka Kawai; Yuichiro Miura - Web page: https://patentgrep.com/patent/US20020104511A1 ## CPC - F02M 31/10: by hot liquids, e.g. lubricants {or cooling water} - F02D 9/104: {Shaping of the flow path in the vicinity of the flap, e.g. having inserts in the housing} - F02D 9/1065: {Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like} - F02D 11/10: of the electric type - F02M 15/02: with heating means, e.g. to combat ice-formation - F02M 15/022: {near to manually operated throttle valve} - F02M 31/04: combustion-air or fuel-air mixture (electrically F02M31/12; by using heat from working cylinders or cylinder heads F02M31/14; heating of combustion-air as an engine starting aid F02N7/04) - F05C 2201/021: Aluminium - Y02T 10/12: Improving ICE efficiencies - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - F05C: INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An apparatus for controlling a throttle valve has a body member made of resin. The body member contains a motor for controlling a throttle valve. The motor has a yoke as a one of components thereof. The yoke is exposed to an intake passage at a slightly upstream side of the throttle valve. According to the arrangement, heat radiation from the motor is improved by intake airflow, and the throttle valve can be prevented from an icing malfunction. ## Claims ### Claim 1 An apparatus for controlling a throttle valve, comprising: a valve which regulates an air amount flowing in an intake pipe of an internal combustion engine in accordance with an opening degree; and a motor which operates the throttle valve to change the opening degree, wherein at least a part of a yoke of the motor is arranged to dissipate heat to the air. ### Claim 2 (depends on 1) The apparatus for controlling the throttle valve according to claim 1, wherein the part of the yoke is exposed to the air in the intake pipe. ### Claim 3 (depends on 1) The apparatus for controlling the throttle valve according to claim 1, further comprising a heat conductive member which is in contact with the part of the yoke, wherein the part of the yoke dissipates heat through the heat conductive member. ### Claim 4 (depends on 3) The apparatus for controlling the throttle valve according to claim 3, wherein a part of the heat conductive member is exposed to the air in the intake pipe. ### Claim 5 (depends on 3) The apparatus for controlling the throttle valve according to claim 3, wherein a part of the heat conductive member is exposed to the outside air. ### Claim 6 (depends on 4) The apparatus for controlling the throttle valve according to claim 4, wherein the other part of the heat conductive member is exposed to the outside air. ### Claim 7 (depends on 2) The apparatus for controlling the throttle valve according to claim 2, further comprising a heat conductive member which is in contact with the other part of the yoke, wherein a part of the heat conductive member is exposed to the air in the intake pipe. ### Claim 8 (depends on 2) The apparatus for controlling the throttle valve according to claim 2, further comprising a heat conductive member which is in contact with the other part of the yoke, wherein a part of the heat conductive member is exposed to the outside air. ### Claim 9 (depends on 7) The apparatus for controlling the throttle valve according to claim 7, wherein the other part of the heat conductive member is exposed to the outside air. ### Claim 10 (depends on 2) The apparatus for controlling the throttle valve according to claim 2, wherein the part of the yoke is exposed at a vicinity of the valve for preventing the valve from an icing. ### Claim 11 (depends on 3) The apparatus for controlling the throttle valve according to claim 3, wherein the heat conductive member has an uneven surface for improving a heat dissipation to the air. ### Claim 12 (depends on 1) The apparatus for controlling the throttle valve according to claim 1, further comprising a member which defines the intake pipe accommodating the valve and a passage in which a heat conductive medium flows, wherein the passage is arranged along an outside of the valve, and a part of the passage is arranged through a vicinity of the motor. ### Claim 13 An apparatus for controlling a throttle valve, comprising: a valve which regulates an air amount flowing in an intake pipe of an internal combustion engine in accordance with an opening degree; a motor which operates the throttle valve to change the opening degree; and a member which defines the intake pipe accommodating the valve and a passage in which a heat conductive medium flows, wherein the passage is arranged along an outside of the valve, and a part of the passage is arranged through a vicinity of the motor. ### Claim 14 An apparatus for controlling a throttle valve for regulating an amount of air flowing in an intake pipe of an internal combustion engine, comprising: a body member made of a resin which has a concavity for housing a motor component; and a bearing holder member made of the same resin of the body member which is formed to cover the concavity and supports a bearing member for supporting an end of a rotation shaft of the motor component, wherein the bearing holder member is fixed on the body member by a welding. ### Claim 15 (depends on 14) The apparatus for controlling the throttle valve according to claim 14, wherein the motor component includes: a yoke fixed in the concavity formed on the body member; a magnet attached on an inside of the yoke; an armature having a rotation shaft which inserted into an inside of the yoke where the magnet is attached; bearing member which supports end of the rotation shaft, and is supported on the body member; and bearing member which supports another end of the rotation shaft, and is supported on the bearing holder member. ### Claim 16 (depends on 14) The apparatus for controlling the throttle valve according to claim 14, wherein a portion where the body member and the bearing holder member are fixed by the welding is an inclined surface which is arranged so that molten resin flows outside of the concavity. ### Claim 17 (depends on 14) The apparatus for controlling the throttle valve according to claim 14, wherein the body member provides a dam portion by an extended part thereof, the dam portion being located on an inside of a portion where the body member and the bearing holder member are fixed by the welding, the dam portion damming molten resin. ### Claim 18 (depends on 14) The apparatus for controlling the throttle valve according claim 14, wherein the body member and the bearing holder member provides a positioning means by engaging portions thereof, the positioning means being capable of aligning the rotation shaft and the bearing member supported on the bearing holder member. ### Claim 19 (depends on 14) The apparatus for controlling the throttle valve according to claim 14, wherein the bearing member supported on the bearing holder member supports an output side or a counter-output side end of the rotation shaft. ### Claim 20 The motor apparatus, comprising: a body member made of a resin having a concavity for housing a motor component; and a bearing holder member fixed on the body member, which supports a bearing member for supporting an end of a rotation shaft of the motor component, wherein the body member and the bearing member are made of the same resin, and the bearing holder member is fixed on the body member by a welding. ### Claim 21 An apparatus for controlling a throttle valve, the throttle valve being supported on a rotation shaft extending across an intake air passage, comprising: an inner cylindrical member which defines the intake air passage where the throttle valve is disposed; an outer cylindrical member disposed on an outside of the inner cylindrical member, the outer and inner cylindrical member defining a passage through which a heat conductive medium flows, the passage being arranged substantially around the intake passage; and at least two bridge portions which bridge the inner and outer cylindrical members and are disposed on vicinities of the rotation shaft. ### Claim 22 An apparatus for controlling a throttle valve, the throttle valve being disposed in an intake passage, comprising: a body member which defines the intake passage and defines a passage through which a heat conductive medium flows, the passage being arranged substantially around the intake passage; and a connecting pipe integrally formed with the body member for flowing the heat conductive medium through the passage, wherein the body member including a first body member and a second body member which are formed to divide the body member axially, and wherein the connecting pipe including a first pipe portion and a second pipe portion which are integrally formed with the first body member and the second body member respectively. ### Claim 23 A method for manufacturing an apparatus for controlling a throttle valve, the throttle valve being disposed in an intake passage, comprising: forming a first body member and a second body member which correspond to divided portion parts of a body member divided axially along an intake passage defined by the body member, the body member defining a passage through which a heat conductive medium flows, the passage being arranged substantially around the intake passage; forming a first pipe portion and a second pipe portion integrally with the first body member and the second body member respectively, the first and second pipe portions corresponding to divided parts of a connecting pipe for flowing the heat conductive medium through the passage; and assembling the first and second body members into the body member and the first and second pipe portions into the connecting pipe simultaneously. ### Claim 24 A method for manufacturing an apparatus for controlling a throttle valve, the throttle valve being disposed in an intake passage, comprising: forming a body member which defines the intake passage and a passage being arranged substantially around the intake passage, wherein the passage is formed by using at least one of a blow resin forming method and a lost wax resin forming method through an opening connected to the passage so that the body member is a seamless.