Source: http://www.google.com/patents/US5040917?dq=5,581,513
Timestamp: 2014-07-11 06:09:13
Document Index: 52650544

Matched Legal Cases: ['Application No. 68092', 'art 7', 'application No. 68092', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7', 'art 7']

Patent US5040917 - Device for fixing mechanical parts to the body of a motor vehicle - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA device is described for fixing to the floor of a motor-vehicle body, by screwing from above, a mechanical part which has previously been brought up to the floor from below. The mechanical part to be fixed carries at least one locating element which engages a corresponding hole formed in the body. The...http://www.google.com/patents/US5040917?utm_source=gb-gplus-sharePatent US5040917 - Device for fixing mechanical parts to the body of a motor vehicleAdvanced Patent SearchPublication numberUS5040917 APublication typeGrantApplication numberUS 07/501,053Publication dateAug 20, 1991Filing dateMar 29, 1990Priority dateMar 30, 1989Fee statusLapsedAlso published asDE69004726D1, DE69004726T2, EP0390751A1, EP0390751B1Publication number07501053, 501053, US 5040917 A, US 5040917A, US-A-5040917, US5040917 A, US5040917AInventorsSergio CamuffoOriginal AssigneeFiat Auto S.P.A.Export CitationBiBTeX, EndNote, RefManPatent Citations (10), Referenced by (47), Classifications (23), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetDevice for fixing mechanical parts to the body of a motor vehicleUS 5040917 AAbstract A device is described for fixing to the floor of a motor-vehicle body, by screwing from above, a mechanical part which has previously been brought up to the floor from below. The mechanical part to be fixed carries at least one locating element which engages a corresponding hole formed in the body. The locating element has a threaded hole which is engaged by a screw on which the smaller-diameter portion of a sleeve can slide. The sleeve has a larger-diameter portion which is adapted to fit over the outer surface of that part of the locating element which projects through the corresponding locating hole in order to facilitate the centering and insertion of the screw in the threaded hole in the locating element.
What is claimed is: 1. A device for fixing to a floor of a motor-vehicle body, by securing from above, a mechanical part which has previously been brought up to the floor below, wherein:a) the mechanical part being fixed carries at least one locating element and the body defines a corresponding locating hole for engagement by the locating element; b) the locating element comprising a peg-like member having an elongated tubular portion with a threaded hole and a flange at one end welded to said mechanical part; and c) a screw having a head and a shank with a threaded end portion spaced from said head adapted to engage the threaded hole in the locating element, anda sleeve having a first, smaller-diameter portion mounted slidably on the shank of said screw with the head of the screw bearing on its end, and a second, larger-diameter portion extending over said threaded end portion in spaced relation thereto and adapted to fit over the outer surface of said tubular portion of the locating element which projects through the corresponding locating hole so as to facilitate the centering and insertion of the screw in the threaded hole in the locating element. 2. A fixing device according to claim 1, wherein the device includes a resilient ring which is fitted onto the shank of the screw to prevent the accidental disengagement of the screw from the sleeve.
3. A fixing device according to claim 1, wherein the peg has a circumferential chamfer at its free end for facilitating the fitting of the larger-diameter portion of the sleeve.
4. A fixing device according to claim 1, wherein a washer is interposed between the head of the screw and the end surface of the smaller-diameter portion of the sleeve.
BACKGROUND OF THE INVENTION The present invention relates to a device for fixing to the floor of a motor-vehicle body, by screwing from above, a mechanical part which has previously been brought up to the floor from below.
A tendency has developed recently in the art to preassemble the mechanical units of a motor vehicle, usually by mounting the various parts on preassembly subframes, and then to mount the subframes carrying the preassembled units on the motor vehicle body by means of automatic equipment. An example of this mode of production which relates to a rear suspension unit mounted on the floor of the motor-vehicle body from below, is described in the prior Italian Patent Application No. 68092-A/88 filed by the same Applicant and designating the same inventor as the present Application. In this mode of production, the preassembled unit is fixed under the floor of the motor-vehicle body by screwing from below with the aid of automatic screwing devices. Because of the particular shape and size of the structure to be fixed, however, some of the fixing points of the preassembled unit may have to be screwed to the body from above, that is, from inside the motor-vehicle body, instead of from below, and this may be difficult to carry out with automatic equipment. Moreover, the mechanical parts are sometimes mounted on box elements forming part of the body and this can make them even more difficult to fix, taking into account the need to avoid the risk of deformation or local weakening of the box element. taking into account the need to avoid the risk of deformation or local weakening of the box element.
SUMMARY OF THE INVENTION In order to resolve all the aforesaid problems simply, the subject of the present invention is a device for fixing to the floor of a motor-vehicle body, by screwing from above, a mechanical part which has previously been brought up to the floor from below,
characterised by the combination of the following characteristics:
a) the mechanical part to be fixed carries at least one locating element which engages a corresponding hole formed in the body;
b) the locating element has a threaded hole;
c) the fixing device comprises:
-a screw adapted to engage the threaded hole in the locating element, and
-a sleeve having a first, smaller-diameter portion mounted slidably on the screw with the head of the screw bearing on its end, and a second, larger-diameter portion adapted to fit over the outer surface of that part of the locating element which projects through the corresponding locating hole so as to facilitate the centering and insertion of the screw in the threaded hole in the locating element.
The locating element may be constituted, for example, by a peg the head of which is welded to the mechanical part to be fixed according to a technique known in applications in which locators have to be provided for the mounting of a preassembled unit on the body of the motor vehicle. Moreover, the fixing device preferably includes a resilient ring which is fitted on the shank of the screw to prevent the accidental disengagement of the screw from the sleeve.
BRIEF DESCRIPTION OF THE DRAWINGS Further characteristics and advantages will become clear from the description which follows with reference to the appended drawings, provided by way of non-limiting example, in which:
FIG. 1 shows in section a detail of the mechanical part to be fixed, provided with a locating peg engaged in a corresponding locating hole in part of the floor of a motor-vehicle body,
FIG. 2 is a sectional view of the fixing device according to the invention, and
FIG. 3 is a sectional view showing the mechanical part mounted on the floor of the motor-vehicle body by means of the device of FIG. 2.
DETAILED DESCRIPTION OF THE INVENTION In the drawings, a mechanical part 7 (for example, an element with a cross member on which a rear suspension unit has been preassembled--see the Applicant's patent application No. 68092-A/88) is to be brought up to the floor 2 of the motor-vehicle body from below and fixed to the floor by screwing from above. The part 7 carries at least one locating element 1 which, in the embodiment illustrated, is constituted by a locating peg with a body which is inserted through a hole 7' in the part 7 and a head which is fixed to the part 7 by welding 9. When the part 7 is mounted under the floor 2 of the body, the portion of the locating peg 1 which projects from the part 7 engages a locating hole 2' formed in the floor 2. The free end of the locating peg 1 which projects above the floor 2--still with reference to the particular embodiment shown--has a circumferential chamfer 1'.
FIG. 3 shows the portion of the floor 2 to which the part 7 is to be fixed in greater detail. As can be seen, in the embodiment shown, the part 7 is fixed to the lower wall of a box element. The fixing device according to the invention, generally indicated 8, (see also FIG. 2) includes a screw 3 with a threaded end portion 3a terminating in a conical point 3b. The threaded portion 3a is intended to be screwed into the threaded hole 1a in the locating peg 1. A sleeve, indicated 5, has a first, smaller-diameter portion 11 mounted slidably on the unthreaded part of the shank of the screw 3 and a second, larger-diameter portion 12 (the diameters of the two portions are indicated d and D respectively in the drawings). The head 3' of the screw 3 abuts the free end surface of the smaller-diameter portion 11 of the sleeve 5 with the interposition of a washer 4. The shank of the screw 3 also has a circumferential groove 3c in which a resilient split ring 6 to prevent the accidental disengagement of the screw 3 from the sleeve 5.
FIG. 3 clearly shows the operating principle of the device 8 according to the invention: after the mechanical part 7 has been positioned adjacent the box element 2 from below by the insertion of the locating peg 1 in the locating hole 2', the device 8 is fitted into the cavity of the body element 2 from above by being passed through a hole 2a (FIG. 3) in the upper wall of the box element. The larger-diameter portion 12 of the sleeve 5 fits over the outer surface of that part of the locating peg 1 which projects through the hole 2' so as to facilitate the centering and insertion of the screw 3 in the threaded hole in the locating peg 1. The chamfer 1' of the locating peg facilitates the fitting of the sleeve over it. At the same time, the conical point 3b of the screw facilitates its fitting in the threaded hole 1a.
The device according to the invention is particularly suitable for fixing mechanical parts to box elements which form parts of motor-vehicle bodies, as shown in FIG. 3, but its use is not of course limited exclusively to box parts.
Another characteristic of the solution according to the invention is that the same locating pegs 1 as are normally used for the mounting of preassembled subassemblies are also used as engagement elements for fixing screws.
The fixing achieved by the device according to the invention provides a good distribution of the loading of the bolts between the connected elements by virtue of the wide annular coupling surface between the larger-diameter portion of the sleeve 5 and the fixed parts. Moreover, good resilience under tension is achieved by virtue of the overall length of the screw.
Naturally, the principle of the invention remaining the same, the forms of embodiment and details of construction may be varied widely with respect to those described and illustrated purely by way of example.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2915152 *Mar 12, 1957Dec 1, 1959Graham Thomas TLeak-proof boltUS3271058 *May 22, 1963Sep 6, 1966Anderson Greenwood & CoTapered fastenerUS3603626 *Jan 27, 1969Sep 7, 1971Standard Pressed Steel CoHigh-strength joint and fastener assembly thereforUS4238165 *Jan 25, 1979Dec 9, 1980Illinois Tool Works Inc.Fastener unit for clamping plastic workpiecesUS4312145 *Jan 9, 1980Jan 26, 1982Caterpillar Tractor Co.Replaceable fastener for cover plates and the likeUS4334599 *Aug 18, 1980Jun 15, 1982The Bendix CorporationDisc brake and mounting pin assembly thereforUS4647264 *Jul 22, 1985Mar 3, 1987Russell, Burdsall & Ward CorporationSealing cap tubular rivet head and assemblyUS4787793 *Mar 27, 1987Nov 29, 1988Terrell Lee SharpBolt guardUS4850771 *May 20, 1988Jul 25, 1989Hurd Ramon LInstallation system for securing workpieces of composite materials and the like and threaded fastener for such systemUS4921371 *Feb 24, 1989May 1, 1990ValeoVibration resistant securing means, especially for securing a brush carrier plate to a bearing carrier plate of an electric motor* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5139361 *Feb 7, 1991Aug 18, 1992Fiat Auto SpaDevice for connecting mechanical parts to the body of a motor vehicleUS5244325 *Sep 28, 1992Sep 14, 1993Elco Industries, Inc.Fastener assembly with axially slidable sleeveUS5247549 *Oct 16, 1992Sep 21, 1993General Electric CompanyControl rod spacer padUS5328311 *Aug 30, 1993Jul 12, 1994Elco Industries, Inc.Fastener assembly with axially slidable sleeve and floating retainerUS5349884 *Oct 28, 1993Sep 27, 1994Chrysler CorporationDust shield mounting systemUS5489177 *Jun 8, 1994Feb 6, 1996Crest Products, Inc.Fastener assembly with axially captivated washerUS5505036 *Mar 27, 1995Apr 9, 1996Lewtex Technological Manufacturing, Inc.Utility pole beam with improved load transferUS5505465 *Jan 3, 1994Apr 9, 1996Hornsby; JohnMechanical seal stud torquing systemUS5682678 *Nov 13, 1995Nov 4, 1997The Nordam Group, Inc.Mechanical repair for a honeycomb panelUS5711711 *Nov 17, 1995Jan 27, 1998Crest Products, Inc.Method of manufacturing a fastener assembly with axially captivated washerUS5980174 *Oct 29, 1997Nov 9, 1999The Nordam Group, Inc.System for reinforcing a sandwich panelUS6102640 *May 6, 1998Aug 15, 2000Fujikin IncorporatedBolt retainer for members to be fixed together by the boltUS6269902 *Feb 18, 2000Aug 7, 2001Honda Giken Kogyo Kabushiki KaishaConstruction for mounting subframe to vehicle bodyUS6394537Jan 31, 2001May 28, 2002Daimlerchrysler CorporationArrangement for attaching a plastic vehicle body to a metal frame and related methodUS6561715Sep 19, 2001May 13, 2003American Axle & Manufacturing, Inc.Inner tie rod to relay rod fastening and adjustment systemUS6609435 *Feb 9, 2000Aug 26, 2003Ina-Schaeffler KgActuating element a straight-toothed gearboxUS6672672 *Jun 13, 2000Jan 6, 2004Intier Automotive Inc.Floating attachment washer for a vehicle seatUS6872040 *Apr 11, 2003Mar 29, 2005Kamax-Werke Rudolf Kellermann Gmbh & Co. KgFastener including a screw and a supporting elementUS6883859Sep 16, 2003Apr 26, 2005Honda Motor Company, Ltd.Fastening system with extension elementUS7086688Sep 16, 2003Aug 8, 2006Honda Motor Company, Ltd.Fastening system with bearing memberUS7228935 *Sep 10, 2003Jun 12, 2007Andreas Stihl Ag & Co. KgAttachment pin for an exhaust-gas mufflerUS7363751Nov 2, 2006Apr 29, 2008Shakespeare Composite Structures, LlcWound-in tenon/wound-in tenon collar for attachment of luminaireUS7393015 *Jun 18, 2007Jul 1, 2008Honda Motor Co., Ltd.Vehicle sub-frame attachment apparatus and methodUS7490964Jun 26, 2006Feb 17, 2009Genlyte Thomas Group LlcModular pole system for a light fixtureUS7581913Jan 24, 2006Sep 1, 2009Honda Motor Company, Ltd.Seal nut assembly and method of manufactureUS7878287 *Dec 8, 2006Feb 1, 2011Ford Motor CompanySubframe-locating deviceUS8007029 *Oct 3, 2008Aug 30, 2011Newfrey LlcAttachment assembly for aerodynamic performance improvement coverUS8186901 *Apr 13, 2007May 29, 2012Dura Global Technologies, LlcLiftglass to strut retention device with built-in locking featureUS8220581Dec 20, 2010Jul 17, 2012Ford Global Technologies, LlcSubframe locating deviceUS8272823 *Oct 24, 2007Sep 25, 2012Sulzer Pumpen AgSealing arrangement for the attachment of a side plate of a centrifugal pump and an attachment screw used therewithUS8297720 *Jun 22, 2010Oct 30, 2012Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd.Device housing with latching mechanismUS8366150 *May 13, 2009Feb 5, 2013Ford Global TechnologiesReinforcement tube assemblyUS8371783Oct 26, 2009Feb 12, 2013Profil-Verbindungstechnik Gmbh & Co. KgSpacer element for the attachment of a sheet metal part, component assembly and method for its manufactureUS8591158Jan 8, 2013Nov 26, 2013Profil Verbindungstechnik Gmbh & Co. KgSpacer element for the attachment of a sheet metal part, component assembly and method for its manufactureUS8662576 *Jun 8, 2011Mar 4, 2014Thyssenkrupp Steel Europe AgBody for a motor vehicle and method for producing a motor vehicle bodyUS20100202856 *Jan 5, 2010Aug 12, 2010Acument Intellectual Properties, LlcIsolator assembly and method of installationUS20100289281 *May 13, 2009Nov 18, 2010David Alan ParsonsReinforcement tube assemblyUS20100296894 *Apr 20, 2010Nov 25, 2010Samsung Electronics Co., Ltd.Screw fastening unitUS20110008126 *Jul 24, 2008Jan 13, 2011Acument Gmbh & Co. OhgDevice for fastening plastic parts to a motor vehicle bodyUS20110193459 *Jun 22, 2010Aug 11, 2011Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd.Device housing with latching mechanismUS20110266837 *Jun 8, 2011Nov 3, 2011Thyssenkrupp Steel Europe AgBody for a Motor Vehicle and Method for Producing a Motor Vehicle BodyUS20110274483 *May 7, 2010Nov 10, 2011Ford Global Technologies, LlcBolted joint assemblyUS20120009033 *Jul 8, 2011Jan 12, 2012Chase 'Em Back Tools LLCReleasable Thread ChaserUS20130149943 *Feb 11, 2013Jun 13, 2013Makita CorporationDevice for preventing removal of a fixing member of a whetstone cover in a disc grinderCN101219685BDec 5, 2007Jun 20, 2012福特汽车公司Subframe-locating deviceDE10255296A1 *Nov 26, 2002Jun 3, 2004Volkswagen AgFastening bracket for attachment to elongated frame member has additional sheet metal section welded in place and incorporates nut with ends welded to frame and threaded blind boreDE10255296B4 *Nov 26, 2002Apr 10, 2014Volkswagen AgVorrichtung zur Befestigung von einem Bauteil* Cited by examinerClassifications U.S. Classification403/408.1, 411/970, 411/546, 411/353, 411/338, 411/339, 411/999International ClassificationB62D27/06, F16B35/00, F16B37/06, F16B5/02Cooperative ClassificationY10S411/97, Y10S411/999, F16B5/02, F16B37/061, F16B35/00, B62D27/065, B62D21/09European ClassificationF16B35/00, B62D27/06A, F16B37/06A, F16B5/02, B62D21/09Legal EventsDateCodeEventDescriptionOct 31, 1995FPExpired due to failure to pay maintenance feeEffective date: 19950823Aug 20, 1995LAPSLapse for failure to pay maintenance feesMar 28, 1995REMIMaintenance fee reminder mailedJun 7, 1991ASAssignmentOwner name: FIAT AUTO S.P.A. AN ITALIAN JOINT STOCK COMPANY,Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CAMUFFO, SERGIO;REEL/FRAME:005722/0786Effective date: 19900202RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google