GB1582148A - Vibration isolation assembly - Google Patents

Vibration isolation assembly Download PDF

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Publication number
GB1582148A
GB1582148A GB2650877A GB2650877A GB1582148A GB 1582148 A GB1582148 A GB 1582148A GB 2650877 A GB2650877 A GB 2650877A GB 2650877 A GB2650877 A GB 2650877A GB 1582148 A GB1582148 A GB 1582148A
Authority
GB
United Kingdom
Prior art keywords
gasket
base
cover
sleeves
resilient
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
Application number
GB2650877A
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.)
Deere and Co
Original Assignee
Deere and Co
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
Priority claimed from US05/685,455 external-priority patent/US4066058A/en
Priority claimed from US05/707,622 external-priority patent/US4067531A/en
Application filed by Deere and Co filed Critical Deere and Co
Publication of GB1582148A publication Critical patent/GB1582148A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/04—Connections between superstructure or understructure sub-units resilient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/06—Drivers' cabs
    • B62D33/0604—Cabs insulated against vibrations or noise, e.g. with elastic suspension
    • 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
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • 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
    • F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • F02F7/008—Sound insulation
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0258—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using resiliently deformable sleeves, grommets or inserts
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
    • F16F1/3732—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having an annular or the like shape, e.g. grommet-type resilient mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/0062—Gaskets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Vibration Prevention Devices (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

(54) A VIBRATION ISOLATION ASSEMBLY (71) We, DEERE & COMPANY, a corporation organised and existing under the laws of the State of Delaware, United States of America, of Moline, Illinois 61265, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a vibration isolation assembly of a member from a base and particularly to such an assembly in which a cover is vibration isolated from an internal combustion engine. The invention is an improvement in, or modification of, that described and claimed in the complete specification of our co-pending application number 18625/77 (Serial No. 1582147).
In particular we have claimed in that specification an assembly for vibration isolation of a member from a base which comprises the base, the member mounted on the base, a plurality of securing means, each having a head, securing the member to the base, a plurality of resiliently compressible vibration isolating elements each compressed between a head and the member, and a resilient vibration isolating gasket compressed between the member and the base, the static spring rate of the plurality of resiliently compressible elements being within the range one half to twice that of the gasket.
According to the present invention a vibration isolation assembly comprises an assembly according to any of claims 1 to 10 in the complete specification of our co-pending application number 18625/77 (Serial No.
1582147) in which the plurality of resiliently compressible elements comprises a plurality of resilient protruding sleeves for shank portions of the securing means, the sleeves being integral with the gasket and extending through the member, and the gasket having corresponding through-passages therein for the shank portions of the securing means aligned with the sleeves.
Embodiments of the invention will now be described with reference to the accompanying diagrammatic drawings in which: Figure 1 is a side view of an assembly for vibration isolation of a cover from an engine; Figure 2 is a cross-sectional view taken along the line 2--2 of Figure 1; Figure 3 is a cross-sectional view taken along line 3--3 of Figure 1; Figure 4 is a side view of an alternative assembly for vibration isolation of the cover from the engine; Figure 5 is a cross-sectional view taken along the line 5--5 of Figure 4; Figure 6 is a cross-sectional view taken along the line 6--6 of Figure 4; and Figure 7 is an isometric view of a portion of the assembly of Figure 4.
Referring now to Figure 1, there is shown a vibration isolation assembly 10 which includes a vibratable base in the form of an engine 12 having a cavity or opening 14 provided therein, a gasket 16 encircling the opening 14, and a cover 18 covering the opening 14 and secured to the engine 12 by bolts 22 passing through washers 20.
In Figure 2, there is shown a cross-section of the gasket 16 with the bolt 22 in an untightened position. The bolt 22 having a bolt head 24 and a threaded portion 26 is lightly threaded into a threaded hole 28 in the engine 12. The gasket 16 includes a pair of oblong bead-shaped, i.e. H-shaped, sealing portions 30 and 32 which have similar cross-sections and which are connected by a rectangular flange portion 34. The flange portion 34 is integral with a plurality of resilient sleeves or cylindrical protrusions 36 axially perpendicular to the plane of the bead-shaped portions 30 and 32. Each of the protrusions 36 has a through-passage 37 in which is moulded a non-resilient sleeve 38 which is generally metallic. The protusions 36 which taper toward the bolt heads 24 further have annular relief grooves 40 provided therearound proximate the flange portions 34, of substantially the same diameter as clearance holes 42 provided in the cover 18 so as to provide shoulders which abut the upper face of the cover 18.
As may be seen in Figure 3, when the bolt 22 is tightened into the threaded hole 28 until the washer 20 abuts the sleeve 38, the gasket 16 will be compressed until the beadshaped portions 30 and 32 are deformed to form sealing surfaces 46 and 48, and 50 and 52, respectively, and the protrusion 36 will be deformed into a convoluted configuration or grommet as designated by the numeral 44.
For assembly, the protrusions 36 are first press fitted into the clearance holes 42 in the cover 18 and held in place thereby. The cover 18, with the gasket 16 held in place, is then positioned against the vibratable base 12 and the bolts 22, encircled by the washers 20, are inserted through the prtrusions 36 and the sleeves 38 to be threaded into the threaded holes 28. As the bolts 22 are tightened down to a position set by the length of the sleeve 38, the gasket 16 will deform so as to form the convolutions 44 above the cover and the sealing surfaces 46, 48, 50 and 52 between the cover 18 and the base 12.
The durometer of the gasket 16 as well as the wall thickness of the protrusions 36 are selected so as to provide equal spring rates between the washer 20 and the cover 18 and between the cover 18 and the vibratable base 12 as explained in greater detail in the specification of our said co-pending patent application. Furthermore, as also explained in that specification, the minimum compression of the gasket 16 between the cover 18 and the vibratable base 12 is 10% of the uncompressed height. Thus the sleeve 38 is sized accordingly.
Referring now to Figure 4, there is shown a vibration isolation assembly 110 which includes a vibratable engine or base 112 having an engine cavity or opening 114 provided therein, a gasket 116 encircling the opening 114, and a cover 118 covering the opening 114 and secured to the vibratable base 112 by bolts 122 passing through washers 120.
In Figure 5, there is shown a cross-section of the gasket 116 which includes an oblong bead-shaped sealing portion 130 with the major axis of the oblong perpendicular to the surface of the base 112 and a stabilizing band 132 embedded in the sealing portion 130 which is of a material, such as a metal, which is rigid enough to withstand any tendency of the major axis of the sealing portion 130 to move out of perpendicularity with the surface of the base 112.
Figure 6 shows a cross-section of the gas ket 116 in the region of one of the bolts 122 which is screwed into a threaded hole 128 in the base 112. In this region, the gasket 116 includes a flange portion 134 encircled by the sealing portion 130 and having one of a plurality of cylindrical protrusions 136 which are positioned axially perpendicular to the flange portion 134 and perpendicular to the plane of a closed loop defined by the gasket 116. The protrusion 136 and the flange portion 134 contain a through-hole into which is moulded a cylindrical sleeve 138. The protrusions 136 further have an annular relief groove 140 provided therearound proximate the flange portion 134, of substantially the same diameter as clearance holes 142 provided in the cover 118.
The bolt 122 is shown tightened into the threaded hole 128 until the washer 20 abuts the sleeve 138 compressing the gasket 116 until the oval bead-shaped sealing portion 130 is deformed to form sealing surfaces 146 and 148 and the protrusion 136 is deformed into a convoluted configuration or isolating grommet as designated by the numeral 144.
Figure 7 shows an isometric of a portion of the gasket 116 in the uncompressed condition in the region of one of the protrusions 136.
The assembly 110 is fitted together in a similar way to the assembly 10 as described above in relation to Figures 1 to 3.
WHAT WE CLAIM IS: 1. A vibration isolation assembly which comprises an assembly according to any of claims 1 to 10 in the complete specification of our co-pending application number 18625/77 in which the plurality of resiliently compressible elements comprises a plurality of resilient protruding sleeves for shank portions of the securing means, the sleeves being integral with the gasket and extending through the member, and the gasket having corresponding through-passages therein for the shank portions of the securing means aligned with the sleeves.
2. An assembly according to claim 1 in which the gasket is H-shaped in vertical cross-section at each protrusion, the upright arms of the H-shape contacting at one end the member and at the other end the base.
3. An assembly according to claim 1 or 2 in which the resilient sleeves are convoluted under compression between the head means and the member.
4. An assembly according to any preceding claim including a non-resilient sleeve in each resilient sleeve and corresponding through-passage, the non-resilient sleeves receiving shank portions of the securing means therethrough and arranged between the head means and the base to limit compression of the resilient sleeves and the gasket.
5. An assembly according to claim 4 in which the non-resilient sleeves are integral with the associated resilient sleeves and the gasket.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    further have annular relief grooves 40 provided therearound proximate the flange portions 34, of substantially the same diameter as clearance holes 42 provided in the cover 18 so as to provide shoulders which abut the upper face of the cover 18.
    As may be seen in Figure 3, when the bolt 22 is tightened into the threaded hole 28 until the washer 20 abuts the sleeve 38, the gasket 16 will be compressed until the beadshaped portions 30 and 32 are deformed to form sealing surfaces 46 and 48, and 50 and 52, respectively, and the protrusion 36 will be deformed into a convoluted configuration or grommet as designated by the numeral 44.
    For assembly, the protrusions 36 are first press fitted into the clearance holes 42 in the cover 18 and held in place thereby. The cover 18, with the gasket 16 held in place, is then positioned against the vibratable base 12 and the bolts 22, encircled by the washers 20, are inserted through the prtrusions 36 and the sleeves 38 to be threaded into the threaded holes 28. As the bolts 22 are tightened down to a position set by the length of the sleeve 38, the gasket 16 will deform so as to form the convolutions 44 above the cover and the sealing surfaces 46, 48, 50 and 52 between the cover 18 and the base 12.
    The durometer of the gasket 16 as well as the wall thickness of the protrusions 36 are selected so as to provide equal spring rates between the washer 20 and the cover 18 and between the cover 18 and the vibratable base
    12 as explained in greater detail in the specification of our said co-pending patent application. Furthermore, as also explained in that specification, the minimum compression of the gasket 16 between the cover 18 and the vibratable base 12 is 10% of the uncompressed height. Thus the sleeve 38 is sized accordingly.
    Referring now to Figure 4, there is shown a vibration isolation assembly 110 which includes a vibratable engine or base 112 having an engine cavity or opening 114 provided therein, a gasket 116 encircling the opening 114, and a cover 118 covering the opening
    114 and secured to the vibratable base 112 by bolts 122 passing through washers 120.
    In Figure 5, there is shown a cross-section of the gasket 116 which includes an oblong bead-shaped sealing portion 130 with the major axis of the oblong perpendicular to the surface of the base 112 and a stabilizing band
    132 embedded in the sealing portion 130 which is of a material, such as a metal, which is rigid enough to withstand any tendency of the major axis of the sealing portion 130 to move out of perpendicularity with the surface of the base 112.
    Figure 6 shows a cross-section of the gas ket 116 in the region of one of the bolts 122 which is screwed into a threaded hole 128 in the base 112. In this region, the gasket 116 includes a flange portion 134 encircled by the sealing portion 130 and having one of a plurality of cylindrical protrusions 136 which are positioned axially perpendicular to the flange portion 134 and perpendicular to the plane of a closed loop defined by the gasket 116. The protrusion 136 and the flange portion 134 contain a through-hole into which is moulded a cylindrical sleeve 138. The protrusions 136 further have an annular relief groove 140 provided therearound proximate the flange portion 134, of substantially the same diameter as clearance holes 142 provided in the cover 118.
    The bolt 122 is shown tightened into the threaded hole 128 until the washer 20 abuts the sleeve 138 compressing the gasket 116 until the oval bead-shaped sealing portion 130 is deformed to form sealing surfaces 146 and 148 and the protrusion 136 is deformed into a convoluted configuration or isolating grommet as designated by the numeral 144.
    Figure 7 shows an isometric of a portion of the gasket 116 in the uncompressed condition in the region of one of the protrusions 136.
    The assembly 110 is fitted together in a similar way to the assembly 10 as described above in relation to Figures 1 to 3.
    WHAT WE CLAIM IS: 1. A vibration isolation assembly which comprises an assembly according to any of claims 1 to 10 in the complete specification of our co-pending application number 18625/77 in which the plurality of resiliently compressible elements comprises a plurality of resilient protruding sleeves for shank portions of the securing means, the sleeves being integral with the gasket and extending through the member, and the gasket having corresponding through-passages therein for the shank portions of the securing means aligned with the sleeves.
  2. 2. An assembly according to claim 1 in which the gasket is H-shaped in vertical cross-section at each protrusion, the upright arms of the H-shape contacting at one end the member and at the other end the base.
  3. 3. An assembly according to claim 1 or 2 in which the resilient sleeves are convoluted under compression between the head means and the member.
  4. 4. An assembly according to any preceding claim including a non-resilient sleeve in each resilient sleeve and corresponding through-passage, the non-resilient sleeves receiving shank portions of the securing means therethrough and arranged between the head means and the base to limit compression of the resilient sleeves and the gasket.
  5. 5. An assembly according to claim 4 in which the non-resilient sleeves are integral with the associated resilient sleeves and the gasket.
  6. 6. An assembly according to any preced
    ing claim which the resilient sleeves each have a shoulder abutting the face of the member nearer the head means.
  7. 7. An assembly according to any preceding claim in which the resilient sleeves taper toward the head means before compression.
  8. 8. An assembly according to any preceding claim including a non-resilient stabilizing band embedded in the gasket.
  9. 9. An assembly for vibration isolation of a member from a base substantially as described herein with reference to, and as illustrated in, Figures 1 to 3 or Figures 4 to 6 of the accompanying diagrammatic drawings.
GB2650877A 1976-05-12 1977-06-24 Vibration isolation assembly Expired GB1582148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/685,455 US4066058A (en) 1976-05-12 1976-05-12 Vibration isolation system
US05/707,622 US4067531A (en) 1976-07-22 1976-07-22 Vibration isolation and sealing gasket

Publications (1)

Publication Number Publication Date
GB1582148A true GB1582148A (en) 1980-12-31

Family

ID=27103601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2650877A Expired GB1582148A (en) 1976-05-12 1977-06-24 Vibration isolation assembly

Country Status (3)

Country Link
DE (1) DE2728664A1 (en)
FR (1) FR2359326A2 (en)
GB (1) GB1582148A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123519A (en) * 1982-07-08 1984-02-01 Summit Coin Limited Resilient mounting for vibratory component
EP1104856A1 (en) * 1999-11-23 2001-06-06 Schwarz Verbindungs-Systeme GmbH Vibration damping coupling for two parts which can slide with respect to each other
GB2507774A (en) * 2012-11-09 2014-05-14 Aston Martin Lagonda Ltd A mounting assembly for mounting a vibration device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATA108690A (en) * 1990-05-16 1994-12-15 Laimboeck Franz LIQUID-COOLED INTERNAL COMBUSTION ENGINE
DE4321514A1 (en) * 1993-06-29 1995-01-12 Goetze Ag Sealing two housing parts
DE4437341C2 (en) * 1994-10-19 1997-07-31 Ford Werke Ag Fastening arrangement for covers on machines
DE19936748B4 (en) * 1998-08-17 2011-07-28 Polytec Automotive GmbH & Co. KG, 82538 Mounting system for housing cover on housings of power machines
DE102006021625B4 (en) * 2006-05-09 2013-08-01 Federal-Mogul Sealing Systems Bretten Gmbh Covering device with sealing element for internal combustion engines
DE202009006788U1 (en) * 2009-04-30 2009-08-20 Alfred Kärcher Gmbh & Co. Kg Steam cleaner
DE102012006524A1 (en) * 2012-03-29 2013-10-02 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Screw assembly used for fixing of components in motor car, has screw that is set in pre-fixed state with threaded end of bottom of guide element and is projected from guide element central bore pre-fixed in rubber-elastic material
KR101382717B1 (en) * 2012-06-28 2014-04-17 현대자동차주식회사 Vibration Insulator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895408A (en) * 1974-01-30 1975-07-22 Charles J Leingang Resilient mounting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123519A (en) * 1982-07-08 1984-02-01 Summit Coin Limited Resilient mounting for vibratory component
EP1104856A1 (en) * 1999-11-23 2001-06-06 Schwarz Verbindungs-Systeme GmbH Vibration damping coupling for two parts which can slide with respect to each other
US6592285B1 (en) 1999-11-23 2003-07-15 Schwarz Verbindungs-Systeme Gmbh Vibration-damping connection arrangement for two components capable of being moved against one another
GB2507774A (en) * 2012-11-09 2014-05-14 Aston Martin Lagonda Ltd A mounting assembly for mounting a vibration device

Also Published As

Publication number Publication date
FR2359326B2 (en) 1982-09-03
FR2359326A2 (en) 1978-02-17
DE2728664A1 (en) 1978-01-26

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee