US3873237A - Impeller wheel for torque converter or fluid coupling - Google Patents

Impeller wheel for torque converter or fluid coupling Download PDF

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Publication number
US3873237A
US3873237A US425297A US42529773A US3873237A US 3873237 A US3873237 A US 3873237A US 425297 A US425297 A US 425297A US 42529773 A US42529773 A US 42529773A US 3873237 A US3873237 A US 3873237A
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US
United States
Prior art keywords
shell
impeller wheel
rib
tabs
torque converter
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
US425297A
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English (en)
Inventor
Masayoshi Tokunaga
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.)
DAIKEN SEISAKUSHO KK
Original Assignee
DAIKEN SEISAKUSHO KK
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Publication date
Application filed by DAIKEN SEISAKUSHO KK filed Critical DAIKEN SEISAKUSHO KK
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Publication of US3873237A publication Critical patent/US3873237A/en
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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
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D33/00—Rotary fluid couplings or clutches of the hydrokinetic type
    • F16D33/18—Details
    • 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
    • F16H2041/243—Connections between pump shell and cover shell of the turbine
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member

Definitions

  • the impeller wheel has a very desirable rigidity by 1 1 416/180 reason 01 the fact that the shell of the impeller wheel 1 1 f U B211 is provided with an annular support member welded to 1 1 lleld 0 Search FC its periphery, and that each blade of the impeller wheel is welded, at its rib. to the shell.
  • 1 1 416/180 reason 01 the fact that the shell of the impeller wheel 1 1 f U B211 is provided with an annular support member welded to 1 1 lleld 0 Search FC its periphery, and that each blade of the impeller wheel is welded, at its rib. to the shell.
  • This invention relates to an improved impeller wheel which can be used as an impeller in a turbine, in a torque converter or fluid coupling, or similar application.
  • the prior art impeller wheel such as that disclosed in U.S. Pat. No. 2,855,852, was of a type which comprised many stamped blades with pre-determined outer profiles, each blade being fixed between a shell (outer wall of working fluid) and a core ring (inner wall).
  • each blade since each blade had a few tabs (or projections) on its inner and outer peripheries in one body, and the tabs were inserted and secured in the respective grooves or slits in the shell and core ring, the
  • the pressure in the casing of a conventional torque converter or liquid coupling for a vehicle is 3 or 4 kg/cm or below, and it is also known that higher pressure minimizes the bad effect of air or gas contained in the liquid (oil) such as cavitation, which phenomenon makes for poor performance of the device.
  • a pressure higher than above mentioned cannot be applied because of the low rigidity of the structure.
  • slits in the shell or core ring may easily cause the bursting of the torque converter.
  • the performance of the prior construction gradually deteriorates, because the place and angle of the connection points between the blades and respective parts, and the curvature of the blades, can easily change.
  • a stamped impeller shell needs, in general, at its outer and or inner peripheries an annular support member, such as a support ring, which is connected to a ring member secured on a rotary housing, or an impeller hub journalled in a stationary housing.
  • the annular support member functions to provide a liquid-tight connection with the ring member or stationary housing.
  • the outer periphery of the impeller shell is sometimes directly connected, by welding, to the rotary housing.
  • a stamped shell for turbine wheel has a member (spline hub) to which the shell is secured by rivets.
  • each impeller wheel for a pump or turbine a welding or rivetting process is required to attach an annular support member or members in addition to the processes of fixing the blades onto the shell.
  • the cost of manufacturing this prior type of impeller wheel was high in that much labor was required for assembling the parts.
  • each shell has at least an annular support member secured on its outer or inner periphery and the securing process can also be used at the same time to secure the blades onto the shell.
  • a principal object of the invention is to provide an impeller wheel of a design favorable to a lower cost of manufacture.
  • the impeller wheel has a shell, many blades and a core ring, each blade having a rib at least at its outer periphery in the same body, and each blade seating on the inner surface of the shell by means of the rib.
  • Each blade is secured at the rib to the shell by tabs provided on each end of the rib, by welding, soldering or equivalent secure way, together with an annular support member, thereby increasing the rigidity and durability of the blades and of the wheel as a whole, and minimizing the labor for assembling the parts.
  • Another object of the invention is to provide an impeller wheel in which the distance between the blades does not change as time passes. and in which the profile of the blade also does not change, because each blade is strengthened by the rib or ribs and preferably being stamped with the rib or ribs in one piece from sheet metal, thereby giving high performance of the impeller wheel.
  • a further inventive object is to provide an impeller wheel in which each blade is accurately located in a shell and a core ring by means of blade position-setting means (tabs) provided on the rib, thereby simplifying assembly of the blades with the shell and core ring.
  • FIG. 1 is a sectional view of an upper half part of a torque converter according to the present invention
  • FIG. 2 is a partial view taken along line llll in FIG.
  • FIG. 3 is a perspective view of a blade used in FIG. 1;
  • FIGS. 4 and 5 are partial sectional views of another impeller wheel embodying principles of the invention.
  • the torque converter 10 comprises a driving impeller wheel 11, powered by an engine, which functions as a pump, a driven impeller wheel 12 which functions a turbine and a bladed stator 13.
  • the rotating pump wheel lltransmits energy to a working fluid which latter transmits energy to and drives turbine wheel 12 which is coupled to an output drive shaft 14.
  • the bladed stator 13 located intermediate the facing pump and turbine wheels 11, 12 remains stationary below a pre-determined output-input speed ratio of the turbine and pump impellers, to change the direction of the fluid to convert energy thereof.
  • Pump wheel 11 is connected to the flywheel 16 of an engine (not shown) by means including an annular drive plate 17 which is secured at its outer peripheral portion to the face of the flywheel 16 by a ring of circumferentially spaced bolts 18.
  • the inner peripheral portion of drive plate 17 is secured to a hub 19 by a similar ring of bolts 20, the hub 19 including an axle 21 journalled in flywheel 16 by an anti-friction bearing 22.
  • Hub 19 in turn is secured to a hub 23 by the same ring of bolts 20, which hub 23 is welded to the inner portion of rotary housing 24 as at 25.
  • Welded as at 26 on the outer periphery of rotary housing 24 is a support ring 27.
  • asupport ring 28 Around support ring 27 is asupport ring 28 which is fastened to support ring 27 by bolts 29 and a fluid tight seal is provided therebetween by seal ring 30.
  • Impeller wheel 11 is composed of' the support ring 28, and a stamped shell 32, an impeller hub 33, a core ring 34 and a plurality of ribbed blades 35.
  • Each ribbed blade 35 has ribs 36, 37 along its outer and inner peripheries.
  • Rib 36 provides a snug fit with the interior surface of shell 32.
  • Rib 37 fits on the core ring 34 in the same manner as rib 36.
  • Tabs 38, 39 formed at both ends of rib 36 are bent outwardly on the exterior surface of shell 32. Therefore, support ring 28 and shell 32 abut each other having a plurality of tabs 38 interposed therebetween, and an annular clearance 40 (FIG. 2) which is equivalent with the thickness d of tab 38 is left between the tabs 38.
  • Seam welding is applied, as at 41, over the clearance 40 and tabs 38. Tabs 39 are also placed between shell 32 and impeller hub 33, and are bent outwardly. Seam welding is also applied as at 42. Rib 36 may be secured on the interior surface of shell 32 by way of spot welding, soldering or some other secure way if necessary.
  • Tabs 44, 45 formed at both ends of rib 37 are bent outwardly on the exterior surface of core ring 34 and soldered as at 46, 47.
  • the novel concept underlying the present invention is applied to the portions indicated circles A, B in the impeller wheel 11.
  • Impeller hub 33 is journalled in the stationary housing and a fluid-tight seal is provided therebetween by seal ring 31.
  • the detailed structure of the turbine wheel 12 includes a shell 49, a spline hub 50, a core ring 51 and a plurality of ribbed blades 52.
  • the present invention is applied to the portion C in which tabs 53 formed at I the end of ribs 54 are located in the annular clearance formed between the shell 49 and spline hub 50 abutting each other.
  • the clearance and bent tabs 53 are filled and sealed by seam welding as at 55.
  • the spline hub 50 engages with a spline 57 on the previously mentioned output drive shaft 14 (i.e., a turbine shaft).
  • Shaft 14 is journalled on a bearing 58 mounted inside hub 19 and support ring 23.
  • a ring 59 prevents the shaft 14 from slipping off axially.
  • Stator 13 preferably is cast in one piece, and is journalled on a fixed sleeve 61 through a oneway cluuth 62 which includes an outer race 63 which engages with stator 13 through spline 64.
  • stator 13 is fixed on stationary sleeve 61, whilst at a velocity above said velocity ratio, the stator is free to rotate in the same direction as that of driven impeller wheel or turbine 12, to make the converter act as a fluid coupling.
  • impeller wheel blades were fixed independently of (or apart from) the junction between the shell and support members such as support ring (corresponding to support ring 380, impeller hub (33) and spline hub Therefore, much labor was required. Strong construction against pressure was difficult to obtain.
  • shell 32, tabs 38 and support ring 28 are welded at the same time to make a unitary construction. Therefore. the construction is not only easy to manufacture but also is strongly resistant to pressure. In the connection portions B, C, the same advantages are provided.
  • support ring 28 overlaps the array of tabs 38 which are bent and seated on the outer peripheries of the exterior surface of shell 32'.
  • tabs 38' are engaged in recesses (indents) 66 which are circumferentially spaced at regular intervals and function as position-setting means.
  • Rightmost ends of tabs 38' are aligned with the rightmost end surface of support ring 28' and welding is applied annularly as at 41'.
  • three parts, i.e., tabs 38, support ring 28 and shell 32'. are connected in one procedure of seam welding. To strengthen the construction, additional welding may be applied as at 67.
  • Impeller hub 33' has an annular recess 69 in which inner portion of shell 32' is engaged interposing tabs 39' which are regularly spaced by means of indents 70 formed on the inner periphery of shell 32. Weldings 42' and 71 are applied, if necessary.
  • indents 73 are formed on the inner periphery of shell 40'.
  • the indents 73 help blades 52 to dispose at regular intervals. It will be understood that the feature shown incircle C may be applicable in conjunctions shown in circles A, B, C in FIG. 1.
  • An impeller wheel for torque converter or fluid I coupling comprising a shell (32); a core ring (34); a circular array of circumferentially spaced blades (35); and
  • a support ring member (28, 33) connected at at least one of the inner and outer peripheries of said shell (3 each of said blades having a least a rib (36) with a configuration complementary to that of the interior surface of said shell (32),
  • said rib (36) having a tab (38, 39) at at least one of t intervals on the periphery of said shell (32').

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Fluid Gearings (AREA)
US425297A 1972-12-30 1973-12-17 Impeller wheel for torque converter or fluid coupling Expired - Lifetime US3873237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP732817A JPS526420B2 (fr) 1972-12-30 1972-12-30

Publications (1)

Publication Number Publication Date
US3873237A true US3873237A (en) 1975-03-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US425297A Expired - Lifetime US3873237A (en) 1972-12-30 1973-12-17 Impeller wheel for torque converter or fluid coupling

Country Status (6)

Country Link
US (1) US3873237A (fr)
JP (1) JPS526420B2 (fr)
CA (1) CA977651A (fr)
FR (1) FR2212896A5 (fr)
GB (1) GB1437498A (fr)
IT (1) IT1008093B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665693A (en) * 1984-03-23 1987-05-19 Aisin Seiki Kabushiki Kaisha Hydraulic torque converter
US4868365A (en) * 1988-06-06 1989-09-19 Ford Motor Company Method for welding torque converter blades to a housing using a laser welding beam
US5259191A (en) * 1991-03-20 1993-11-09 Mazda Motor Corporation Torque converter
US5655881A (en) * 1995-03-17 1997-08-12 Exedy Corporation Fluid turbine
US5706656A (en) * 1995-04-10 1998-01-13 Fichtel & Sachs Ag Hydrokinetic torque converter and method of manufacture thereof
US5902498A (en) * 1994-08-25 1999-05-11 Qqc, Inc. Methods of joining metal components and resulting articles particularly automotive torque converter assemblies
DE19707558B4 (de) * 1997-02-26 2006-07-27 Voith Turbo Gmbh & Co. Kg Schaufelrad für eine hydrodynamische Maschine
DE19707557B4 (de) * 1997-02-26 2006-09-07 Voith Turbo Gmbh & Co. Kg Schaufelrad für eine von einem Medium durchströmte Maschine
US20080044285A1 (en) * 2006-06-08 2008-02-21 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torque converter with brazed turbine
WO2017222851A1 (fr) * 2016-06-21 2017-12-28 Schaeffler Technologies AG & Co. KG Convertisseur de couple comprenant une enveloppe de roue étendue destinée à être raccordée à une plaque d'entraînement du moteur
CN108223612A (zh) * 2016-12-14 2018-06-29 福伊特专利有限公司 液力耦合器
US20190011030A1 (en) * 2016-03-04 2019-01-10 Exedy Corporation Fluid-type rotary bladed wheel
US11092221B1 (en) * 2020-01-27 2021-08-17 Schaeffler Technologies AG & Co. KG Torque converter with expanded radius cover and method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220251A (en) * 1988-07-01 1990-01-04 Luk Lamellen & Kupplungsbau Fluid clutch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061997A (en) * 1934-05-14 1936-11-24 Chrysler Corp Power transmitting device
US2256988A (en) * 1938-12-09 1941-09-23 Chrysler Corp Apparatus for making fluid couplings
US2347071A (en) * 1940-08-24 1944-04-18 Chrysler Corp Fluid coupling
US2660957A (en) * 1949-03-16 1953-12-01 Chrysler Corp Rotor wheel
US2799228A (en) * 1951-05-22 1957-07-16 Borg Warner Vaned elements and method of making the same
US3673659A (en) * 1968-11-16 1972-07-04 Nissan Motor Method for bonding vanes in torque converter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2061997A (en) * 1934-05-14 1936-11-24 Chrysler Corp Power transmitting device
US2256988A (en) * 1938-12-09 1941-09-23 Chrysler Corp Apparatus for making fluid couplings
US2347071A (en) * 1940-08-24 1944-04-18 Chrysler Corp Fluid coupling
US2660957A (en) * 1949-03-16 1953-12-01 Chrysler Corp Rotor wheel
US2799228A (en) * 1951-05-22 1957-07-16 Borg Warner Vaned elements and method of making the same
US3673659A (en) * 1968-11-16 1972-07-04 Nissan Motor Method for bonding vanes in torque converter

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665693A (en) * 1984-03-23 1987-05-19 Aisin Seiki Kabushiki Kaisha Hydraulic torque converter
US4868365A (en) * 1988-06-06 1989-09-19 Ford Motor Company Method for welding torque converter blades to a housing using a laser welding beam
US5259191A (en) * 1991-03-20 1993-11-09 Mazda Motor Corporation Torque converter
US5902498A (en) * 1994-08-25 1999-05-11 Qqc, Inc. Methods of joining metal components and resulting articles particularly automotive torque converter assemblies
US5655881A (en) * 1995-03-17 1997-08-12 Exedy Corporation Fluid turbine
US5706656A (en) * 1995-04-10 1998-01-13 Fichtel & Sachs Ag Hydrokinetic torque converter and method of manufacture thereof
DE19707558B4 (de) * 1997-02-26 2006-07-27 Voith Turbo Gmbh & Co. Kg Schaufelrad für eine hydrodynamische Maschine
DE19707557B4 (de) * 1997-02-26 2006-09-07 Voith Turbo Gmbh & Co. Kg Schaufelrad für eine von einem Medium durchströmte Maschine
US20080044285A1 (en) * 2006-06-08 2008-02-21 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torque converter with brazed turbine
US7918645B2 (en) * 2006-06-08 2011-04-05 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torque converter with brazed turbine
US20190011030A1 (en) * 2016-03-04 2019-01-10 Exedy Corporation Fluid-type rotary bladed wheel
WO2017222851A1 (fr) * 2016-06-21 2017-12-28 Schaeffler Technologies AG & Co. KG Convertisseur de couple comprenant une enveloppe de roue étendue destinée à être raccordée à une plaque d'entraînement du moteur
CN109196249A (zh) * 2016-06-21 2019-01-11 舍弗勒技术股份两合公司 包括用于连接至发动机驱动板的延伸的叶轮壳的变矩器
US10408320B2 (en) 2016-06-21 2019-09-10 Schaeffler Technologies AG & Co. KG Torque converter including extended impeller shell for connecting to engine drive plate
CN108223612A (zh) * 2016-12-14 2018-06-29 福伊特专利有限公司 液力耦合器
US11092221B1 (en) * 2020-01-27 2021-08-17 Schaeffler Technologies AG & Co. KG Torque converter with expanded radius cover and method thereof

Also Published As

Publication number Publication date
FR2212896A5 (fr) 1974-07-26
CA977651A (en) 1975-11-11
DE2364168B2 (de) 1975-11-27
IT1008093B (it) 1976-11-10
JPS4992467A (fr) 1974-09-03
DE2364168A1 (de) 1974-08-22
GB1437498A (en) 1976-05-26
JPS526420B2 (fr) 1977-02-22

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