EP0547731A1 - Gegossene verstärkte Konsole - Google Patents

Gegossene verstärkte Konsole Download PDF

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Publication number
EP0547731A1
EP0547731A1 EP92305592A EP92305592A EP0547731A1 EP 0547731 A1 EP0547731 A1 EP 0547731A1 EP 92305592 A EP92305592 A EP 92305592A EP 92305592 A EP92305592 A EP 92305592A EP 0547731 A1 EP0547731 A1 EP 0547731A1
Authority
EP
European Patent Office
Prior art keywords
reinforcing plate
bracket
hole
support bracket
holes
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.)
Withdrawn
Application number
EP92305592A
Other languages
English (en)
French (fr)
Inventor
Dennis S. Shimmell
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.)
Nelson Metal Products Corp
Original Assignee
Nelson Metal Products Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nelson Metal Products Corp filed Critical Nelson Metal Products Corp
Publication of EP0547731A1 publication Critical patent/EP0547731A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium

Definitions

  • the present invention relates to cast metal brackets, and, more specifically, to cast metal brackets having an embedded stiffening plate.
  • Cast metal brackets are frequently used as support members in applications where the bracket must be formed in a special shape or configuration.
  • a typical application is a mounting bracket for an internal combustion engine.
  • the bracket is bolted to the engine and has support members extending outwardly for supporting components such as an alternator, power steering pump, or any of a wide variety of other devices.
  • bracket In an application such as an internal combustion engine, the bracket must be specially shaped to avoid interferences with other components in the typically crowded engine compartment of modern vehicles. Furthermore, it is highly desirable to make the bracket as light in weight as possible to improve fuel economy. To meet these ends, such brackets will often be configured with rather slender support members and thin wall thicknesses. Cast metal, particularly aluminium, is well suited to meet such requirements.
  • Brackets as described above, particularly those used on engines, will be subject to significant stresses.
  • the bracket must be able to withstand such stresses without excessive deflection. Vibrations may be severe, and it is particularly important that the natural frequencies of the vibration modes of the bracket be higher than the vibration frequencies of the engine to which the bracket is mounted; otherwise, the vibrations of the engine would induce excessive bracket vibration amplitudes and might even cause the bracket to crack and fail.
  • a second approach is to make the bracket out of stronger and stiffer materials. However, such materials tend to be heavier and harder. Material hardness is a significant problem in that machining of the bracket is made more difficult.
  • a third approach is to manufacture the bracket with an embedded reinforcing plate, the reinforcing plate being designed to strengthen and increase the natural frequency of the bracket as needed.
  • Cast metal brackets are usually manufactured by first casting the metal, machining the casting to obtain precision surfaces, and by drilling to form holes for bolts or other fasteners or penetrations.
  • the metal used for the outer body of the casting typically aluminium
  • the reinforcing plate material typically steel
  • Drilled holes will be particularly difficult to produce, since the drill must pass through the hard reinforcing plate material as well as the softer outer body material of the bracket.
  • a cast bracket that may be made in shapes suitable for cramped spaces, that is light in weight yet strong and stiff enough to resist vibrations, and is readily machinable.
  • a support bracket which comprises a body cast of material having at least one drilled hole therethrough and a reinforcing plate embedded in the body, and is characterised in that the reinforcing plate has a preformed hole disposed in correspondence with the drilled hole, the preformed hole having a diameter greater than the diameter of the drilled hole.
  • Brackets made according to the present invention may be made in any desired configuration. Since it is not necessary to machine through the reinforcing plate, the plate may be made of an extremely strong and tough material, thus enabling the bracket to be formed in shapes having thin members which would otherwise be unable to resist the forces imposed on the bracket.
  • the invention also includes, according to a second aspect, a method for making a support bracket comprising the steps of forming a reinforcing plate and casting a bracket body material around the reinforcing plate such that the reinforcing plate is embedded within said bracket body material, characterised in that the plate is formed with a hole and that after casting a hole is drilled through the bracket body material with a drill having a smaller diameter than the hole in the reinforcing plate, the drill passing through the hole in the reinforcing plate without cutting into the reinforcing plate.
  • a support bracket 10 for an internal combustion engine In its general organisation, the bracket has a central section 12 which is adapted to be bolted to an engine or an engine component, and outwardly extending members 14,16 which are adapted to support other engine components such as an alternator 18 and a power steering pump 20.
  • the central section 12 of the bracket is formed with three holes 22,24,26 which are drilled through the bracket. These holes are provided for the passage of bolts for attaching the bracket. Other holes 28,30,32 are provided for other fasteners as needed.
  • the other body of the bracket is made of a cast metal such as 280 aluminium chosen for its castability and light weight.
  • a steel reinforcing plate 36 Embedded within the aluminium body of the bracket generally surrounding a central opening 34 is a steel reinforcing plate 36.
  • the reinforcing plate is a relative thin member shaped as a ring having a perpendicularly offset tongue 38.
  • the shape of the reinforcing plate 36 is specific to the particular bracket shown in Fig. 1. It should be understood that the principles of the invention are applicable to an unlimited variety of other bracket and reinforcing plate shapes, sizes, and configurations.
  • each of the reinforcing plate holes has a diameter somewhat larger than the holes of the finished bracket.
  • the reinforcing plate holes are substantially concentric with the finished holes 22, 24, 26.
  • Brackets according to the invention are manufactured by first forming the reinforcing plate with the desired shape and holes, then supporting the plate in the desired position within the cavity of a casting die. Molten metal is then poured into the die. As a result, the reinforcing plate is embedded within the bracket. Holes such as holes 22, 24 and 26 are then drilled through the bracket. Since the diameters of the reinforcing plate holes 40, 42, and 44 are greater than the diameters of the drilled holes 22, 24, and 26, the drill bit cuts only through the softer metal of the body 46 of the bracket, not through the harder, less machinable reinforcing plate metal. The resulting bracket is relatively light in weight, yet has sufficient strength and rigidity to resist the forces imposed by a harsh, vibrating environment, such as an engine compartment.
  • Fig. 5 shows a second example of a bracket 50 according to the invention.
  • the configuration of bracket 50 contains a number of bends 52, 53, 54, surfaces 56, 57, 58, and a relatively narrow neck 60.
  • the steel reinforcing plate 62 is conveniently bent, shaped, and preformed with holes such as hole 64 to be embedded within the cast aluminium body 66 in the same manner as described above.
  • the reinforcing plate being of steel is of a metal which has a greater stiffness than the material of which the remainder of the bracket is cast, namely aluminium. Moreover, the plate is configured to increase the natural frequency of vibration of the bracket in order to avoid dangerous vibrations being generated by running of the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Motor Or Generator Frames (AREA)
  • Body Structure For Vehicles (AREA)
EP92305592A 1991-12-09 1992-06-18 Gegossene verstärkte Konsole Withdrawn EP0547731A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80352591A 1991-12-09 1991-12-09
US803525 1991-12-09

Publications (1)

Publication Number Publication Date
EP0547731A1 true EP0547731A1 (de) 1993-06-23

Family

ID=25186733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92305592A Withdrawn EP0547731A1 (de) 1991-12-09 1992-06-18 Gegossene verstärkte Konsole

Country Status (4)

Country Link
EP (1) EP0547731A1 (de)
JP (1) JPH05272355A (de)
CA (1) CA2067960A1 (de)
MX (1) MX9204626A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010950A1 (en) * 1996-09-11 1998-03-19 Ford Global Technologies, Inc. Mounting device for an engine bearing of an internal combustion engine
WO1999014862A1 (en) * 1997-09-12 1999-03-25 Ericsson, Inc. Frame structure for cellular telephones
WO2008113687A1 (de) 2007-03-21 2008-09-25 Zf Friedrichshafen Ag Gussgehäuse
EP2010344A2 (de) * 2006-03-30 2009-01-07 Z F Group North American Operations, Inc. Verfahren zur herstellung eines mehrschichtigen artikels aus duplexmaterial
GB2595358A (en) * 2020-05-06 2021-11-24 Cummins Inc Alternator support with alignment features

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040029736A (ko) * 2002-10-02 2004-04-08 현대자동차주식회사 엔진의 보조기구류 장착용 브라켓
CN111594733A (zh) * 2020-05-28 2020-08-28 安徽江淮汽车集团股份有限公司 发动机动转泵安装支架

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052818A1 (de) * 1980-11-26 1982-06-02 Nissan Motor Co., Ltd. Kurbelgehäuse für eine Brennkraftmaschine
JPH02151363A (ja) * 1988-11-30 1990-06-11 Mitsubishi Motors Corp エンジン取付用ブラケットの製造法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818896B2 (ja) * 1975-03-04 1983-04-15 関西ペイント株式会社 プラスチツクライナ−付王冠の製造方法
JPS5920955B2 (ja) * 1977-02-10 1984-05-16 株式会社東芝 直接接触式復水器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0052818A1 (de) * 1980-11-26 1982-06-02 Nissan Motor Co., Ltd. Kurbelgehäuse für eine Brennkraftmaschine
JPH02151363A (ja) * 1988-11-30 1990-06-11 Mitsubishi Motors Corp エンジン取付用ブラケットの製造法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 399 (M-1017)29 August 1990 & JP-A-02 151 363 ( MITSUBISHI MOTORS CORP ) 11 June 1990 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010950A1 (en) * 1996-09-11 1998-03-19 Ford Global Technologies, Inc. Mounting device for an engine bearing of an internal combustion engine
WO1999014862A1 (en) * 1997-09-12 1999-03-25 Ericsson, Inc. Frame structure for cellular telephones
US6058293A (en) * 1997-09-12 2000-05-02 Ericsson, Inc. Frame structure for cellular telephones
AU744218B2 (en) * 1997-09-12 2002-02-21 Ericsson Inc. Frame structure for cellular telephones
EP2010344A2 (de) * 2006-03-30 2009-01-07 Z F Group North American Operations, Inc. Verfahren zur herstellung eines mehrschichtigen artikels aus duplexmaterial
EP2010344A4 (de) * 2006-03-30 2009-04-15 Z F Group North American Opera Verfahren zur herstellung eines mehrschichtigen artikels aus duplexmaterial
WO2008113687A1 (de) 2007-03-21 2008-09-25 Zf Friedrichshafen Ag Gussgehäuse
GB2595358A (en) * 2020-05-06 2021-11-24 Cummins Inc Alternator support with alignment features
GB2595358B (en) * 2020-05-06 2023-08-23 Cummins Inc Alternator support with alignment features

Also Published As

Publication number Publication date
CA2067960A1 (en) 1993-06-10
JPH05272355A (ja) 1993-10-19
MX9204626A (es) 1993-06-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19940623