US3768262A - Cooling shroud plate for hydraulic torque transmitting mechanism - Google Patents

Cooling shroud plate for hydraulic torque transmitting mechanism Download PDF

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Publication number
US3768262A
US3768262A US00204162A US3768262DA US3768262A US 3768262 A US3768262 A US 3768262A US 00204162 A US00204162 A US 00204162A US 3768262D A US3768262D A US 3768262DA US 3768262 A US3768262 A US 3768262A
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US
United States
Prior art keywords
torque transmitting
transmitting mechanism
cooling
hydraulic torque
annular member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00204162A
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English (en)
Inventor
K Iwanaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
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Publication of US3768262A publication Critical patent/US3768262A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/24—Details
    • F16H41/30—Details relating to venting, lubrication, cooling, circulation of the cooling medium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/912—Cooling means

Definitions

  • ABSTRACT A cooling shroud plate for use in a hydraulic torque transmitting mechanism, consisting of an annular member having formed thereon a plurality of concave and convex portions which circumferentially alternate, a plurality of rib portions formed between the concave and convex portions and flange means formed on the annular member at the outer peripheral wall thereof.
  • the concave portions serve as mounting elements for mounting the cooling shroud plate on the outer surface of the hydraulic torque transmitting mechanism, while the convex portions serve to provide cooling air flow passages through which the cooling air circulates to cool the outer surface of the torque transmitting a mechanism.
  • a hydraulic torque transmitting mechanism such as a hydraulic torque converter is commonly provided with cooling fins or a shroud plate at the outer surface thereof.
  • the cooling fins or shroud plate which are usually formed from a metal sheet, are arranged to be rotatable with the moving part of the hydraulic torque transmitting mechanism for circulating the air thereon to cool the same.
  • the cooling fins thus arranged have disadvantages in that it is extremely difficult to provide a sufficient air flow due to their inherent construction with a resultant decrease in cooling effect. Furthermore, since these cooling fins are divided from each other, it is also difficult to provide ease of assembling especially when mounting on the outer surface of the torque transmitting mechanism. Another problem encountered is that the cooling fins produce undesirable noises during optransmitting mechanism. For this reason, an additional reinforcing member will be required thereby complicating the construction of the cooling shroud plate.
  • Another object of this invention is to provide a cooling shroud plate which has a light weight yet possesses great strength and rigidity without use of a reinforcing member.
  • Still another object of this invention is to provide a cooling shroud plate which provides ease of assembling.
  • a further object of this invention is to provide a cooling shroud plate which is highly effective in cooling the component parts of the hydraulic torque transmitting mechanism.
  • the present invention contemplates providing a cooling shroud plate for use in a hydraulic torque transmitting mechanism.
  • the shroud plate consists of an annular member having formed thereon a plurality of circumferentially alternating concave and convex portions.
  • the concave portions serve as mounting elements for mounting the cooling shroud plate on the hydraulic torque transmitting mechanism, while the convex portions serve to provide cooling air flow passages.
  • the concave and convex portions are connected with each other by means of a plurality of rib portions which extend radially of the annular member.
  • a flange means is provided on the annular member at the periphery thereof and connected to the peripheral walls of the concave and convex portions for improving directional characteristics of the cooling air flow.
  • FIG. 1 is a schematic side elevation view of a hydraulic torque converter employing a cooling shroud plate embodying the present invention
  • FIG. 2 is an elevation view showing a preferred embodiment of the cooling shroud plate according to the present invention.
  • FIG. 3 is a section view taken on section line III-III of FIG. 2;
  • FIG. 4 is a section view taken on line IV of FIG. 2;
  • FIG. 5 is a section view taken on section line V of FIG. 2;
  • FIG. 6 is an elevation view showing another preferred embodiment of the cooling shroud plate according to the present invention.
  • FIG. 7 is a section view taken on section line VII of FIG. 6;
  • FIG. 8 is a section view taken on section line VIII of FIG. 6.
  • cooling shroud plate of the present invention will be herein shown and described as applied to a hydralic torque converter, by way of example only. It should, however, be understood that the cooling shroud plate of the present invention is also applicable to many other types of hydraulic torque transmitting mechanisms.
  • the hydraulic torque converter 10 employing a cooling shroud plate 11 embodying the present invention.
  • the hydraulic torque converter 10 is usually mounted in a housing 12.
  • the hydraulic torque converter 10 consists of, as customary, a bladed impeller or pump 10a, a bladed rotor or turbine 10b and a bladed reaction element or stator 100.
  • the pump 10a is connected through a driving plate 13 to an input shaft 14 which may be a crank shaft of an internal combustion engine.
  • the turbine 10b which is driven by the pump 10a, is splined to an output shaft 15.
  • the stator is rotatably mounted on a hollow shaft 16, and a one-way brake 17 is disposed between the stator 10c and the hollow shaft 16.
  • the hydraulic torque converter 10 operates in a manner well known for driving the turbine 10b at an increased torque than the torque impressed on the pump 10a of the converter.
  • the working oil in the pump 10a passes through the turbine 10b to the stator 10c and thus functions to transfer the torque impressed on the pump 10a to the turbine 10b, which consequently drives the output shaft Eat the increased torque.
  • the working oil which is moving around with the pump 10a, is thrown with a forward motion, or velocity, into the turbine 10b.
  • considerable heat is generated. due to shock losses occurring at the entrance to the blades of the turbine. This is also true for the pump and the stator.
  • the cooling shroud plate 11 of the present invention is mounted on the outer surface 18 of the pump 10a to assist in transferring heat therefrom to cooling air therearound.
  • the housing 12 is provided with air inlet and outlet passages 12a and 12b. The cooling air passed from the air inlet passage 12a is passed in a direction shown by an arrow in FIG. 1 to a passage (not identified) defined between the outer surface 18 of the pump 10a and the cooling shroud plate 11 as and thus the cooling effect results.
  • FIGS. 2 to 5 A preferred example of the cooling shroud plate according to the present invention is illustrated in FIGS. 2 to 5.
  • the cooling shroud plate 11 consists of an annular member 19 which is made from a metal sheet formed in a shape to fit the outer surface 18 of the pump 10a of the hydraulic torque converter.
  • the annular member 19 is provided with a plurality of concave and convex portions 20 and 21, which are disposed alternatively circumferentially.
  • the concave and convex portions are connected with each other by means of rib portions 22 which extend radially of the annular member 19.
  • Each of the concave portions 20 is shown to be smaller in width than the convex portion 21, but may be suitably sized in accordance with requirements.
  • the concave portions 20 serve as mounting elements to be welded to the outer surface 18 of the pump 10a, while the convex portions 21 serve to provide cooling air flow passages on the outer surface 18 of the pump 10a.
  • the annular member 19 has formed thereon a flange 23 which provides not only strength to the cooling shroud plate 11 but also the directional characteristic of the cooling air flow
  • the cooling shroud plate 11 thus constructed is mounted on the hydraulic torque converter 10 by welding the concave portions 20 to the outer surface 18 of the pump 10a in a manner as previously discussed. As the pump 10a starts to rotate, then the cooling shroud plate 11 is caused to rotate therewith.
  • the cooling air is introduced from the air inlet passage 12a to the interior of the housing 12 by the centrifugal force causedby rotation of the pump 10a.
  • the cooling air thus introduced into the interior of the housing 12 is then passed through the cooling air flow passages defined by the convex portions 21 of the cooling shroud plate 11 to the air outlet passage 12b, from which it is passed into the atmosphere.
  • theouter surface 18 of the pump 10a and accordingly the working oil circulating in the hydraulic torque converter 10 is effectively cooled.
  • the flange 23 is shown as provided continuously on the whole outer end portion of the annular member 19 in FIGS. 2 to 5, the flange 23 may be formed discontinuously as seen from FIGS. 6 to 8, if desired.
  • cooling shroud plate implementing the present invention provides a desirable cooling effect to increase the useful life of the hydraulic torque transmitting mechanism.
  • cooling shroud plate of the present invention has a great strength and rigidity thereby avoiding provision of additional reinforcing members.
  • cooling shroud plate according to the present invention will provide ease of assembling since the component parts are integrally connected with each other.
  • a cooling shroud plate for use in a hydraulic torque transmitting mechanism comprising, an annular member, a plurality of disposed alternately circumferentially on said annular member, said concave portions serving as mounting elements for mounting said cooling shroud plate on an outer surface of said hydraulic torque transmitting mechanism, said convex portions serving to provide cooling air flow passages through which a cooling air circulates to cool the outer surface of said torque transmitting mechanism, a plurality of radially extending rib portions disposed between said concave and convex portions and connected therewith, and flange means on said annular member at the outer periphery thereof.
  • a cooling shroud plate adapted to be mounted on a moving part of a hydraulic torque transmitting mechanism having therein a working oil comprising, an annular member made from sheet metal and having a shape to fit an outer surface of said moving part of said hydraulic torque transmitting mechanism, a plurality of circumferential concave and convex portions alternately on said annular member, said concave portions serving as mounting elements for mounting said cooling shroud plate on said moving part of said torque transmitting mechanism, said convex portions serving to provide cooling air flow passages on the outer surface of said moving part of said torque transmitting mechanism for circulating a cooling air flow thereby cooling the working oil in said hydraulic torque transmitting mechanism, a plurality of radially extending rib portions disposed between said concave and convex portions and connected therewith, and flange means on said annular member at the outer periphery thereof.
  • a cooling shroud plate adapted to be mounted on an outer surface of a moving part of a hydraulic torque transmitting mechanism having therein a working oil which hydraulic torque transmitting mechanism is disposed in a housing having air inlet and outlet passages, said cooling shroud plate comprising an annular member made from sheet metal, a plurality of circumferentially, alternately disposed concave and convex portions on said annular member, said concave portions serving as mounting elements and having shapes to fit the outer surface of said moving part of said hydraulic torque transmitting mechanism, said convex portions serving to provide cooling air flow passages on the outer surface of said moving part of said hydraulic torque transmitting mechanism, said cooling air flow passages permitting a cooling air admitted from said air inlet passage formed on said housing to pass therethrough and subsequently to deliver the cooling air to said air outlet passage formed on said housing for thereby cooling the working oil in said hydraulic torque transmitting mechanism, a plurality of radially extending rib portions disposed between said concave and convex portions and connected therewith, and flange means on

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US00204162A 1971-07-09 1971-12-02 Cooling shroud plate for hydraulic torque transmitting mechanism Expired - Lifetime US3768262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971060185U JPS4817577U (enrdf_load_stackoverflow) 1971-07-09 1971-07-09

Publications (1)

Publication Number Publication Date
US3768262A true US3768262A (en) 1973-10-30

Family

ID=27948554

Family Applications (1)

Application Number Title Priority Date Filing Date
US00204162A Expired - Lifetime US3768262A (en) 1971-07-09 1971-12-02 Cooling shroud plate for hydraulic torque transmitting mechanism

Country Status (5)

Country Link
US (1) US3768262A (enrdf_load_stackoverflow)
JP (1) JPS4817577U (enrdf_load_stackoverflow)
DE (1) DE2163981B2 (enrdf_load_stackoverflow)
FR (1) FR2145907A5 (enrdf_load_stackoverflow)
GB (1) GB1352898A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511979A (en) * 1974-06-25 1976-01-09 Matsushita Electric Industrial Co Ltd Musetsutenshutsuryokuseigyosochi
JPS511978A (en) * 1974-06-25 1976-01-09 Matsushita Electric Industrial Co Ltd Musetsutenshutsuryokuseigyosochi
JPS5160969A (ja) * 1974-11-22 1976-05-27 Omron Tateisi Electronics Co Kaitensuitsuchi
JPS5160968A (ja) * 1974-11-22 1976-05-27 Omron Tateisi Electronics Co Kaitengatamusetsutensuitsuchi
JPS51112063U (enrdf_load_stackoverflow) * 1975-03-07 1976-09-10

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2340494A (en) * 1941-04-23 1944-02-01 Borg Warner Fluid coupling
US2796239A (en) * 1951-12-20 1957-06-18 Gen Motors Corp Heat exchanger
US3472023A (en) * 1966-11-11 1969-10-14 Fichtel & Sachs Ag Drive arrangement for an automotive vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692560A (en) * 1950-12-15 1954-10-26 Borg Warner Cooling device for hydraulic torque converters
FR1219455A (fr) * 1958-05-16 1960-05-18 Porsche Kg Mécanisme d'entraînement pour véhicules, notamment pour tracteurs
GB908899A (en) * 1959-12-30 1962-10-24 Charles Robson An improved fluid coupling
FR1335281A (fr) * 1962-07-05 1963-08-16 Procédé et moyens de récupération de la puissance dissipée par des organes tournant dans des enceintes limitées
US3481148A (en) * 1966-05-07 1969-12-02 Voith Getriebe Kg Fluid flow machine,especially fluid coupling and fluid brake

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2340494A (en) * 1941-04-23 1944-02-01 Borg Warner Fluid coupling
US2796239A (en) * 1951-12-20 1957-06-18 Gen Motors Corp Heat exchanger
US3472023A (en) * 1966-11-11 1969-10-14 Fichtel & Sachs Ag Drive arrangement for an automotive vehicle

Also Published As

Publication number Publication date
FR2145907A5 (enrdf_load_stackoverflow) 1973-02-23
DE2163981B2 (de) 1975-12-04
GB1352898A (en) 1974-05-15
JPS4817577U (enrdf_load_stackoverflow) 1973-02-27
DE2163981A1 (de) 1973-01-18

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