US3834476A - Impact attenuating, replaceable powerplant support - Google Patents
Impact attenuating, replaceable powerplant support Download PDFInfo
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- US3834476A US3834476A US00304223A US30422372A US3834476A US 3834476 A US3834476 A US 3834476A US 00304223 A US00304223 A US 00304223A US 30422372 A US30422372 A US 30422372A US 3834476 A US3834476 A US 3834476A
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- main
- intercostal
- fitting
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- support
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/10—Arrangement or mounting of internal-combustion or jet-propulsion units providing for ready detachment of engine
Definitions
- ABSTRACT An easily replaceable powerplant support is disclosed for use on motor vehicles, of either rigid frame or unit body construction.
- the two main intercostal members are adaptable to engage impact attenuating devices while the vehicle is in use; as well as being adaptable to engage a powerplant removal fixture during removal or replacement of the powerplant and its support for maintenance and inspection or substitution.
- a primary purpose of this invention is to provide a readily replaceable powerplant support of a minimal number of standardized sizes and dimensions so that the automotive manufacturers could quite easily produce motor vehicles of standardized appearance; and yet have a variety of engines or powerplants that could be readily installable in the same vehicle to comply with local pollution control requirements. Consequently, vehicles of identical appearance might be used in Los Angeles or Death Valley, which differ only in the size, type or model of the engine installed in each said vehicle.
- Many governmental agencies have enacted, or are in the process of enacting, legislation to set up minimal requirements for vehicles to be able to withstand minor collisions at low speeds without damage to the safety equipment.
- lmpuct attenuators have been known in the prior art to reduce the potential-danger to the occupants; however, their effective use has been quite limited due to the tremendous variance in automotive design construction.
- the two basic types of automotive body designs are the rigid frame construction andthe unit body construction.
- the rigid frame construction is much easier to assemble by the manufacturer, and is more protective to the vehicle itself in the event of a collision; however, the rigid frame does not have the cushioning effect that the the unit body does in the event of a major impact, necessarily resulting in the abrupt transmittal of force to the passenger compartment, thereby making the passenger more susceptible to injuries such as whiplashes.
- One of the novelties of the present invention is that it combines the advantage of a rigid frame with regard to minor impacts, and the advantage of a unit body with regard to major impacts. This is because it preserves the rigidity of the frame up to a point of failure, above which the engine compartment cowling can collapse, thereby absorbing the impact as would a unit body construction.
- the invention comprises a replaceable powerplant support, generally designated by reference numeral 10, having two tubular main intercostals 11, each said intercostal having an elongate void or passageway therein and adapted to contain a conventional impact attenuator while the vehicle is in operation, or adapted to contain a powerplant removal fixture during removal or replacement of the powerplant.
- the intercostal member 11 has an intercostal fitting 15 at the end opposite the impact attenuator 50 to aid self-alignment of the intercostal fitting 15 into the vehicle support fitting 20.
- the vehicle support fitting may be adapted to any type of vehicle.
- the firewall interface support 38 is hinged at the base for easy disengagement from the firewall prior to the powerplant removal.
- the main cross-member serves to rigidly affix the support framework to the vehicle suspension cross-member 80, as well'as providing a base for powerplant shock or torsional restraint mounts, one being shown by numeral 77.
- the forward bulkhead serves as the vehicle bulkhead as well as the supporting structure for the cooling system, battery, logical subsystems and uniformly designed fan cowling, etc. By sliding the forward bulkhead 100 toward the open end of the main intercostal 11, the powerplant fanblades (not shown) would disengage the fan cowling 98.
- the transmission support member 90 provides a base for the transmission shock or torsional restraint mounts 95, as shown in FIG. 2.
- FIG. 1 is a view, partly in cross-section, showing the novel replaceable powerplant support with the impact attenuator as it would appear installed in the vehicle.
- FIG. 2 is a view of the replaceable powerplant support without the impact attenuators.
- FIG. 3 is a more detailed view of the impact attenuator.
- FIG. 4 is a detailed view of the powerplant removal fixture.
- Powerplant support may be any of various standardized sizes that are adapted for use on conventional motor vehicles including cars, trucks, and vans.
- each main intercostal member has a substantially tubular cylindrical appearance.
- an elongate hollow void or passage 13 within intercostal member 11 is substantially cylindrical in shape contigous with the circular inner portion 12.
- the impact attenuator generally designated by reference numeral 50 comprises a cylindrical structure 51 in which is mounted a plunger 52 secured at one end to an impact transmitting element 53.
- the external bumper of the vehicle 120 which may be of any size or shape, and which may or may not be contiguous is adapted to tit snugly over the impact transmitting element 53, but may or may not be permanently secured to said element.
- the spring washeres may be Belleville type which are substantially conical in profile in an unloaded or not fully loaded condition, which absorb the transmitted collision force due to the physical property of the washers, which become flattened under maximum loading.
- the washers 55 are arranged in a sequentially increased plurality of opposed parallel groups.
- the impact attenuator may also be hydraulic, or pneumatic or a combination of the two, or a conventional helically wound spring, or any other conventional means for absorbtion of the collision forces. In the minor collision, the attenuator would essentially return to its original condition.
- the vehicle support fitting 20 may move longitudinally and downward away from the vehicle passenger compartment underframe, thereby permitting the vehicles forward structure including the fenders 130 and forward bulkhead 100 and suspension cross-member 80 as well as the shear failure of the interlocking shoe assembly intermediate the main cross-member 70 and vehicle suspension crossmember thereby absorbing additional impact forces, as would occur in a conventional unit body type construction vehicle.
- the vehicle support fitting 20 has an upper surface 27, of which the end proximate the intercostal member 11 would be at a greater height above the ground than the opposite end of said surface 27.
- Theangle of slope of said surface 27 should be at least great enough to result in downward movement as well as longitudinal movement of the support fitting 20 in the event of a major collision, in excess of the capacity of the impact attenuators 50.
- the upper surface 27 has a series of apertures, collectively referred to as 28, to provide a bearing surface for application of force to said shear fasteners (not shown).
- the shear fasteners may be cylindrical and include bolts or rivets which penetrate the apertures 28, at one end and are connected to vehicle interface fitting (not shown) at the other end of the shear fasteners.
- the vehicle firewall interface upright, elongate support column 38 separates from the brackets 40 due to failure of the hinge pin 39 mounted intermediate the ends of said bracket 40, permitting the firewall support assembly generally designated by reference numeral 45 to remain engaged to the vehicle firewall 46. This is due to the holding capacity of the locking device 47.
- the impact attenuator outer cylinder 51 is supported within the void or passage 13 of the intercostal member 11 by being juxtaposed to the inner surface 12 of the intercostal member 11 and is retained within the intercostal member 11 by bearing upon the flange or shoulder 57 and being retained by a biasing means such as a clip 58 shown in FIGS. 3 and 1.
- a pin 59 is affixed to clip 58, and said pin is adapted to engage the aperture 91 on the intercostal 11.
- main intercostal fitting 15 which may be either swaged or welded to the main intercostal 11.
- Main intercostal fitting 15 is tapered, internally and externally.
- the externally tapered wall 16 of said main intercostal fitting 15 aids self-alignment of the fitting, generally designated by reference numeral 15 into the vehicle support fitting 20.
- the internally tapered wall 17 of the main intercostal fitting 15 aids in the seating and self-alignment'of the internal wrenching bolt 61.
- the internal hollow passage 13 of the intercostal member 11 is adapted to contain the impact attenuator 50 while the vehicle is in use or the removal fixture generally designated by reference numeral 60 during the powerplant removal, overhaul, replacement or inspection.
- the vehicle support fitting 20 may be made of metal casting or forging, with a tapered receptacle 21 adapted to engage the main intercostal fitting 15.
- the tapered receptacle 21 of said vehicle support fitting 20 terminates in a tapped hole adapted in size and shape to contain the internal wrenching bolt 61.
- the main cross-member 70 serves to rigidly affix the support framework to the vehicle suspension crossmember 80 as well as providing a base for the powerplant shock or torsional restraint mounts 77. It will be seen from FIG. 1 that the upper ends of said main cross-member 70 which are proximate the intercostal members slope downward at a gradually increasing angle in the form of a U-channel and the bottom wall of said U-channel becomes horizontal to the ground near its connection with the powerplant shock mounts 77.
- the forward bulkhead 100 serves as a vehicle bulkhead as well as the supporting structure for the cooling system, electrical subsystems, uniformly designed fancowling 98, vehicle grill 110, and all other logical systems inherent to the various types of powerplants.
- the transmission support member 90 may be U- channelled and semi-circular or semi-eliptical in shape and provides a base for the transmission shock or torsional restraint mounts 95.
- Numeral 152 refers to an opening through which instrumentation and controls characteristic of a predetermined powerplant are placed.
- Numeral 152 would oppose a correspondingly shaped opening (not shown) within the vehicle firewall for visual and manual access of said instrumentation and controls.
- Opening 154 is adapted to engage predetermined electrical interface connections between the vehicle and the powerplant.
- Opening 156 is adapted to engage predetermined air circulation systems.
- the powerplant support may be readily removable as follows:
- the novel invention comprises a forward bulkhead and a firewall interface support assembly that maintain a continual relationship between the engine and its electrical systems.
- hose connections need not be disconnected because the radiator is also supported by the bulkhead in the proposed system.
- the air inlet associated with the powerplant need not be removed.
- shock or torsional restraint mounts need not be disconnected.
- the upper lock 47 which restrains the vehicle interface support assembly 45 disengages the said support from the firewall 46.
- the impact attenuators 50 are removed together with bumper 120 by releasing the biasing clips 58 and withdrawing said attenuators from the main intercostals l 1.
- a conventionally slidable lock 140 disengages recesses in bulkhead retaining pins, collectively designated by reference numeral 102, thereby releasing the forward bulkhead 100 from vehicle fender 130.
- the bolthead torque applicator 66 of the removal fixture 60 engages the recess in the head 62 of the internal wrenching bolt 61.
- Said torque applicator is rigidly affixed to shaft 63 which is free to rotate within bushing 64 and slide longitudinally relative to said bushing.
- the shaft 63 is ridigly affixed to crank 65 for the purpose of transmitting torque to torque applicator 66 to remove the internal wrenching bolt 61.
- the powerplant support 10 may be withdrawn from the vehicle.
- cross-sectional area of the internal void or passage 13 of intercostal member 11 is greater than the cross-sectional area of the tubular member 67 of the removal fixture 60.
- a replaceable power plant support comprising:
- each said member being substantially tubular in shape and having an elongate void or passage therein,
- each said main intercostal fitting secured to one end of each said main inercostal member and tapered, internally and externally, to aid selfalignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
- each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
- each bolt adapted to be contained within each said support fitting
- shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners
- brackets each of which is mounted on each said main intercostal member proximate each said main intercostal fitting
- each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin.
- a replaceable power plant support comprising:
- each said member being substantially tubular in shape and having an elongate void or passage therein,
- each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
- each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
- each bolt adapted to be contained within each said support fitting
- shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners
- brackets each of which is mounted on each said majn'intercostal member proximate each said main intercostal fitting
- each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin, and
- a plurality of torsional restraint mounts which are mounted on said main cross-member.
- a replaceable power plant support comprising:
- each said member being substantially tubular in shape and having an elongate void or passage therein,
- each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
- each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
- each bolt adapted to be contained within each said support fitting
- shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners
- brackets each of which is mounted on each said main intercostal member proximate each said main intercostal fitting
- each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin,
- a replaceable power plant support comprising:
- each said member being substantially tubular in shape and having an elongate void or passage therein,
- each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
- each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
- each bolt adapted to be contained within each said support shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners,
- brackets each of which is mounted on each said main intercostal member proximate each said main intercostal fitting
- each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin,
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Abstract
An easily replaceable powerplant support is disclosed for use on motor vehicles, of either rigid frame or unit body construction. The two main intercostal members are adaptable to engage impact attenuating devices while the vehicle is in use; as well as being adaptable to engage a powerplant removal fixture during removal or replacement of the powerplant and its support for maintenance and inspection or substitution.
Description
United States Patent Donaldson [11] 3,834,476 Sept. 10, 1974 IMPACT ATTENUATING, REPLACEABLE POWERPLANT SUPPORT [21] Appl. No.: 304,223
[52] US. Cl. 180/64 L, 180/82 R, 293/86 [51] Int. Cl. B60r 21/00 Field of Search 180/64 M, 64 L, 82 R; 85/9 R; 296/28 G; 293/85, 86, 89; 267/139, 162
[56] References Cited UNITED STATES PATENTS 1,408,117 2/1922 Mellett 180/82 R 1,543,820 6/1925 Belden 180/90 X 2,035,212 3/1936 Alborn 180/64 L 2,202,050 5/1940 Gibbons 293/85 2,284,768 6/1942 Ramsdell 85/9 R 2,387,266 10/1945 Holland 267/162 3,226,146 12/1965 Behr 293/86 X 3,313,567 4/1967 Sturman 293/89 3,333,880 8/1967 Tavano 293/85 X 3,589,466 6/1971 Dudley 180/82 R 3,638,748 2/1972 Tixier 293/63 X FOREIGN PATENTS OR APPLICATIONS 340,141 9/1959 Switzerland 180/64 M 1,180,715 6/1959 France 180/64 L Primary ExaminerDavid Schonberg Assistant Examiner-Terrance L. Siemens Attorney, Agent, or FirmAllan Miller [57] ABSTRACT An easily replaceable powerplant support is disclosed for use on motor vehicles, of either rigid frame or unit body construction. The two main intercostal members are adaptable to engage impact attenuating devices while the vehicle is in use; as well as being adaptable to engage a powerplant removal fixture during removal or replacement of the powerplant and its support for maintenance and inspection or substitution.
4 Claims, 4 Drawing Figures PATENIED SEP 1 0 m4 SHE! 1 0F 3 PATENTEB 01974 SHEEISDFS IMPACT ATTENUATING, REPLACEABLE POWERPLANT SUPPORT BACKGROUND OF THE INVENTION Despite the tremendous strides that have been made, by the automotive industry since the introduction of the horseless carriage, two areas of vital significance have been neglected by the manufacturers to the detriment of the general public: Namely, control of pollution emitting from exhausts and the safety of the occupants of the vehicle.
With the ecology-minded population now being more concerned than ever with the preservation of the natural environment, much and varied legislation has been introduced by numerous governmental bodies and agencies at all levels, in an attempt to control the amount and type of pollutants emitting from motor vehicle exhausts. This has resulted in the adoption of greatly varying, sometimes inconsistent regulations about the size and type of powerplants that may be used in different areas of the country. It is quite obvious that some geographical areas, for example, the Los Angeles basin, are more beset by smog problems than are the rural areas. Consequently, it is apparent that more rigid controls would have to bev enacted in most of the urban areas than would correspondingly be required in rural areas. This has left the automotive manufacturers with almost an insurmountable dilemma, since an engine currently manufactured may be acceptable in some parts of the country but not acceptable in others. Heretofore a change in the size and type of the engine itself has unnecessarily resulted in a change in the entire design of the vehicle.
A primary purpose of this invention is to provide a readily replaceable powerplant support of a minimal number of standardized sizes and dimensions so that the automotive manufacturers could quite easily produce motor vehicles of standardized appearance; and yet have a variety of engines or powerplants that could be readily installable in the same vehicle to comply with local pollution control requirements. Consequently, vehicles of identical appearance might be used in Los Angeles or Death Valley, which differ only in the size, type or model of the engine installed in each said vehicle.
It may also be seen that using the proposed invention, should a particular engine fail to comply with pollution control requirements, the engine could be readily removed and another inserted without the owner having to purchase an entire new vehicle.
Naturally, during the life of any motor vehicle, the engine must be worked on from time to time for numerous reasons, thus necessitating the entire vehicle to be tied up in a shop for a day or more, and thereby depriving the owner of the use of said vehicle all during that time. He must either change his schedule or rent another vehicle at his own expense. Thus, there is an urgent need to have a replaceable powerplant support so that in case extended maintenance is required, the owner can simply bring his vehicle in, have the original powerplant and support removed for maintenance or inspection and have a substitute powerplant and support installed; and soon be on his way in a matter of minutes. After the maintenance has been completed, the owner can then return and have the powerplant supports and engines switched. Once the engine has been removed on its replaceable support using this novel method, it can easily be temporarily connected to a removal fixture so that all of the engine is accessible from all sides and more easy to work on than it would be if it were still enclosed in the vehicle.
Last, but not least, is an area of most vital concern to the general public, namely the safety of the occupants during the operation of the vehicle. Many governmental agencies have enacted, or are in the process of enacting, legislation to set up minimal requirements for vehicles to be able to withstand minor collisions at low speeds without damage to the safety equipment. lmpuct attenuators have been known in the prior art to reduce the potential-danger to the occupants; however, their effective use has been quite limited due to the tremendous variance in automotive design construction. The two basic types of automotive body designs are the rigid frame construction andthe unit body construction.
The rigid frame construction is much easier to assemble by the manufacturer, and is more protective to the vehicle itself in the event of a collision; however, the rigid frame does not have the cushioning effect that the the unit body does in the event of a major impact, necessarily resulting in the abrupt transmittal of force to the passenger compartment, thereby making the passenger more susceptible to injuries such as whiplashes.
One of the novelties of the present invention is that it combines the advantage of a rigid frame with regard to minor impacts, and the advantage of a unit body with regard to major impacts. This is because it preserves the rigidity of the frame up to a point of failure, above which the engine compartment cowling can collapse, thereby absorbing the impact as would a unit body construction.
As will be seen from the following description, this novel and unique replaceable powerplant support accomplishes all of the objectives set forth above as well as many others.
SUMMARY OF THE INVENTION The invention comprises a replaceable powerplant support, generally designated by reference numeral 10, having two tubular main intercostals 11, each said intercostal having an elongate void or passageway therein and adapted to contain a conventional impact attenuator while the vehicle is in operation, or adapted to contain a powerplant removal fixture during removal or replacement of the powerplant. The intercostal member 11 has an intercostal fitting 15 at the end opposite the impact attenuator 50 to aid self-alignment of the intercostal fitting 15 into the vehicle support fitting 20. The vehicle support fitting may be adapted to any type of vehicle. The firewall interface support 38 is hinged at the base for easy disengagement from the firewall prior to the powerplant removal. The main cross-member serves to rigidly affix the support framework to the vehicle suspension cross-member 80, as well'as providing a base for powerplant shock or torsional restraint mounts, one being shown by numeral 77. The forward bulkhead serves as the vehicle bulkhead as well as the supporting structure for the cooling system, battery, logical subsystems and uniformly designed fan cowling, etc. By sliding the forward bulkhead 100 toward the open end of the main intercostal 11, the powerplant fanblades (not shown) would disengage the fan cowling 98. The transmission support member 90 provides a base for the transmission shock or torsional restraint mounts 95, as shown in FIG. 2.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view, partly in cross-section, showing the novel replaceable powerplant support with the impact attenuator as it would appear installed in the vehicle.
FIG. 2 is a view of the replaceable powerplant support without the impact attenuators.
FIG. 3 is a more detailed view of the impact attenuator.
FIG. 4 is a detailed view of the powerplant removal fixture.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings in this case, and particularly to FIG. 1, it may be seen that the invention contemplates and includes a replaceable powerplant support generally designated by reference numeral 10. Powerplant support may be any of various standardized sizes that are adapted for use on conventional motor vehicles including cars, trucks, and vans.
Although the main intercostals may have a wide variety of different cross-sectional forms or shapes, the preferred embodiment is seen in FIG. 1 wherein each main intercostal member has a substantially tubular cylindrical appearance. Moreover, it may be seen from FIG. 1 that an elongate hollow void or passage 13 within intercostal member 11 is substantially cylindrical in shape contigous with the circular inner portion 12.
The impact attenuator generally designated by reference numeral 50 comprises a cylindrical structure 51 in which is mounted a plunger 52 secured at one end to an impact transmitting element 53.
As seen in FIG. 1, the external bumper of the vehicle 120, which may be of any size or shape, and which may or may not be contiguous is adapted to tit snugly over the impact transmitting element 53, but may or may not be permanently secured to said element. 7
In the event of a minor collision of an object with bumper 120, the longitudinal force resulting from said collision is transmitted to the plunger 52 by means of the impact transmitting element 53. Said force then causes longitudinal movement of the plunger 52 within cylinder 51, so that plunger 52 in turn causes compression of a plurality of spring washers, generally and collectively designated by reference numeral 55, by means of piston 54, which is rigidly attached to plunger 52 so longitudinal movement of the plunger 52 causes corresponding movement of the piston 54. Movement of piston 54 causing deformation of spring washers 55.
As seen in the preferred embodiment, the spring washeres may be Belleville type which are substantially conical in profile in an unloaded or not fully loaded condition, which absorb the transmitted collision force due to the physical property of the washers, which become flattened under maximum loading. In the preferred embodiment the washers 55 are arranged in a sequentially increased plurality of opposed parallel groups.
It is understood, of course, that the impact attenuator may also be hydraulic, or pneumatic or a combination of the two, or a conventional helically wound spring, or any other conventional means for absorbtion of the collision forces. In the minor collision, the attenuator would essentially return to its original condition.
' In the event of a major collision, the plunger cap 56, which is rigidly secured to the plunger 52 at its end opposite impact transmitting element 53, concurrently with the full deformation of spring washers 55 would bear upon the head 62 of the internal wrenching bolt 61, as shown in FIG. 1. This force is transmitted longitudinally through the head 62 which bears upon the main intercostal member fitting 15, which in turn, bears upon the vehicle support fitting 20. The collision is thereby transmitted from element 53 to the vehicle by way of shear fasteners (not shown) which couple vehicle support fitting 20 to the passenger compartment underframe (not shown).
Thus in the event of a major collision, in excess of the capacity of the shear fasteners (not shown) the vehicle support fitting 20 may move longitudinally and downward away from the vehicle passenger compartment underframe, thereby permitting the vehicles forward structure including the fenders 130 and forward bulkhead 100 and suspension cross-member 80 as well as the shear failure of the interlocking shoe assembly intermediate the main cross-member 70 and vehicle suspension crossmember thereby absorbing additional impact forces, as would occur in a conventional unit body type construction vehicle.
It will be seen from FIG. 1 that the vehicle support fitting 20 has an upper surface 27, of which the end proximate the intercostal member 11 would be at a greater height above the ground than the opposite end of said surface 27. Theangle of slope of said surface 27 should be at least great enough to result in downward movement as well as longitudinal movement of the support fitting 20 in the event of a major collision, in excess of the capacity of the impact attenuators 50.
It may also be seen that the upper surface 27 has a series of apertures, collectively referred to as 28, to provide a bearing surface for application of force to said shear fasteners (not shown). The shear fasteners may be cylindrical and include bolts or rivets which penetrate the apertures 28, at one end and are connected to vehicle interface fitting (not shown) at the other end of the shear fasteners.
Concurrent with the failure of said shear fasteners, and longitudinal and downward displacement of the vehicle .support fitting 20, the vehicle firewall interface upright, elongate support column 38 separates from the brackets 40 due to failure of the hinge pin 39 mounted intermediate the ends of said bracket 40, permitting the firewall support assembly generally designated by reference numeral 45 to remain engaged to the vehicle firewall 46. This is due to the holding capacity of the locking device 47.
In the event of a major collision, assuming that the total mass centroid is at a greater distance from the ground than at the primary point of impact, the vehicle would tend to rise above and about the point of impact, thereby increasing the gap between the vehicle underbody and the road surface. The longitudinal and downward thrust of the powerplant support framework would in turn transmit a corresponding force to the engine through the engine shock mount or torsional restraint mounts 95 mounted on transmission support cross-member and shock mounts 77 on the main cross-member 70. This occurs concurrently with collapse of the vehicle forward structure. Consequently, it
is apparent that the novel invention reduces the possibility of the engine being displaced into the passenger compartment as a result of a major impact.
The impact attenuator outer cylinder 51 is supported within the void or passage 13 of the intercostal member 11 by being juxtaposed to the inner surface 12 of the intercostal member 11 and is retained within the intercostal member 11 by bearing upon the flange or shoulder 57 and being retained by a biasing means such as a clip 58 shown in FIGS. 3 and 1. A pin 59 is affixed to clip 58, and said pin is adapted to engage the aperture 91 on the intercostal 11.
At the end of the intercostal member 11, proximate the firewall, generally designated by reference numeral 46 is tapered main intercostal fitting 15 which may be either swaged or welded to the main intercostal 11. Main intercostal fitting 15 is tapered, internally and externally. The externally tapered wall 16 of said main intercostal fitting 15 aids self-alignment of the fitting, generally designated by reference numeral 15 into the vehicle support fitting 20. The internally tapered wall 17 of the main intercostal fitting 15 aids in the seating and self-alignment'of the internal wrenching bolt 61.
The internal hollow passage 13 of the intercostal member 11 is adapted to contain the impact attenuator 50 while the vehicle is in use or the removal fixture generally designated by reference numeral 60 during the powerplant removal, overhaul, replacement or inspection.
The vehicle support fitting 20 may be made of metal casting or forging, with a tapered receptacle 21 adapted to engage the main intercostal fitting 15.
The tapered receptacle 21 of said vehicle support fitting 20 terminates in a tapped hole adapted in size and shape to contain the internal wrenching bolt 61.
The main cross-member 70 serves to rigidly affix the support framework to the vehicle suspension crossmember 80 as well as providing a base for the powerplant shock or torsional restraint mounts 77. It will be seen from FIG. 1 that the upper ends of said main cross-member 70 which are proximate the intercostal members slope downward at a gradually increasing angle in the form of a U-channel and the bottom wall of said U-channel becomes horizontal to the ground near its connection with the powerplant shock mounts 77.
The forward bulkhead 100 serves as a vehicle bulkhead as well as the supporting structure for the cooling system, electrical subsystems, uniformly designed fancowling 98, vehicle grill 110, and all other logical systems inherent to the various types of powerplants.
The transmission support member 90 may be U- channelled and semi-circular or semi-eliptical in shape and provides a base for the transmission shock or torsional restraint mounts 95.
The uppermost portion, generally designated by reference numeral 150, of the firewall support assembly 45, is subdivided into a plurality of framed openings. Numeral 152 refers to an opening through which instrumentation and controls characteristic of a predetermined powerplant are placed. Numeral 152 would oppose a correspondingly shaped opening (not shown) within the vehicle firewall for visual and manual access of said instrumentation and controls.
It will be seen that the powerplant support may be readily removable as follows:
First of all, it is not necessary to disconnect a multitude of electrical connectors such as the battery, voltage regulator, starter relay, etc. that would have to be disconnected to remove the powerplant in the conventional method of mounting an engine. This is because the novel invention comprises a forward bulkhead and a firewall interface support assembly that maintain a continual relationship between the engine and its electrical systems.
Secondly, hose connections need not be disconnected because the radiator is also supported by the bulkhead in the proposed system.
Thirdly, the air inlet associated with the powerplant need not be removed.
Fourthly, the shock or torsional restraint mounts need not be disconnected.
Using the novel replaceable powerplant support as described above, the upper lock 47 which restrains the vehicle interface support assembly 45 disengages the said support from the firewall 46.
The impact attenuators 50 are removed together with bumper 120 by releasing the biasing clips 58 and withdrawing said attenuators from the main intercostals l 1.
Then a removal fixture 60 is inserted into the intercostals 11.
A conventionally slidable lock 140, disengages recesses in bulkhead retaining pins, collectively designated by reference numeral 102, thereby releasing the forward bulkhead 100 from vehicle fender 130.
Then the bolthead torque applicator 66 of the removal fixture 60, engages the recess in the head 62 of the internal wrenching bolt 61. Said torque applicator is rigidly affixed to shaft 63 which is free to rotate within bushing 64 and slide longitudinally relative to said bushing. The shaft 63 is ridigly affixed to crank 65 for the purpose of transmitting torque to torque applicator 66 to remove the internal wrenching bolt 61.
After all the bolts 61 have been loosened or disengaged from the tapped hole in support fitting 20, the powerplant support 10 may be withdrawn from the vehicle.
It is apparent that the cross-sectional area of the internal void or passage 13 of intercostal member 11 is greater than the cross-sectional area of the tubular member 67 of the removal fixture 60.
The withdrawal of the powerplant support 10 from the vehicle is facilitated by the use of a biasing clip 68 secured to the tubular member support housing 69.
I claim:
1. A replaceable power plant support comprising:
a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein,
a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main inercostal member and tapered, internally and externally, to aid selfalignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
a main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another,
a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting,
shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners,
a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting,
a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket, and
a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin.
2. A replaceable power plant support comprising:
a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein,
a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
21 main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another,
a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting,
shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners,
a plurality of brackets, each of which is mounted on each said majn'intercostal member proximate each said main intercostal fitting,
a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket,
a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin, and
a plurality of torsional restraint mounts, which are mounted on said main cross-member.
3. A replaceable power plant support comprising:
a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein,
a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
a main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another,
a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting,
shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners,
a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting,
a plurality of binge pins, each of which is mounted intermediate the ends of ach said bracket,
a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin,
a plurality of torsional restraint mounts, which are mounted on said main cross-member, and
a transmission support cross-member mounted intermediate said main intercostal members.
4. A replaceable power plant support comprising:
a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein,
a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt,
a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fittings upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures,
main cross-member, perependicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another,
plurality of internal wrenching bolts, each bolt adapted to be contained within each said support shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners,
a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting,
a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket,
a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin,
a plurality of torsional restraint mounts, which are mounted on said main cross-member,
a transmission support cross-member mounted intermediate said main intercostal members, and
a plurality of transmission shock mounts, which are mounted on said transmission cross-member.
Claims (4)
1. A replaceable power plant support comprising: a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein, a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main inercostal member and tapered, internally and externally, to aid selfalignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt, a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fitting''s upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures, a main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another, a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting, shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners, a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting, a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket, and a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin.
2. A replaceable power plant support comprising: a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein, a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt, a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fitting''s upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures, a main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another, a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting, shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners anD are connected to a vehicle interface fitting at the other end of said shear fasteners, a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting, a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket, a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin, and a plurality of torsional restraint mounts, which are mounted on said main cross-member.
3. A replaceable power plant support comprising: a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein, a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt, a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, and the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fitting''s upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures, a main cross-member, perpendicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another, a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting, shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners, a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting, a plurality of hinge pins, each of which is mounted intermediate the ends of ach said bracket, a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin, a plurality of torsional restraint mounts, which are mounted on said main cross-member, and a transmission support cross-member mounted intermediate said main intercostal members.
4. A replaceable power plant support comprising: a plurality of main intercostal members, each said member being substantially tubular in shape and having an elongate void or passage therein, a plurality of main intercostal fittings, each said main intercostal fitting secured to one end of each said main intercostal member and tapered, internally and externally, to aid self-alignment of each said main intercostal fitting into each vehicle support fitting and to aid in the seating and self-alignment of each internal wrenching bolt, a plurality of vehicle support fittings, each said vehicle support fitting having a tapered receptacle adapted to engage each said main intercostal fitting, sand the receptacle terminates in a tapped hole adapted in size and shape to contain each internal wrenching bolt, and each said vehicle support fitting''s upper surface of which the end, proximate each said main intercostal member, would be at a greater height above the ground than the opposite end of said surface, and said surface has a series of apertures, A main cross-member, perependicular to each said main intercostal member, which secures each said main intercostal member in a parallel relationship to one another, a plurality of internal wrenching bolts, each bolt adapted to be contained within each said support fitting, shear fasteners which penetrate the apertures on the surface of each said vehicle support fitting at one end of said fasteners and are connected to a vehicle interface fitting at the other end of said shear fasteners, a plurality of brackets, each of which is mounted on each said main intercostal member proximate each said main intercostal fitting, a plurality of hinge pins, each of which is mounted intermediate the ends of each said bracket, a plurality of vehicle firewall interface upright, elongate support columns, each said column having each said hinge pin inserted through each said column, whereby each said support column will separate from each said bracket upon failure of each said hinge pin, a plurality of torsional restraint mounts, which are mounted on said main cross-member, a transmission support cross-member mounted intermediate said main intercostal members, and a plurality of transmission shock mounts, which are mounted on said transmission cross-member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00304223A US3834476A (en) | 1972-11-06 | 1972-11-06 | Impact attenuating, replaceable powerplant support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00304223A US3834476A (en) | 1972-11-06 | 1972-11-06 | Impact attenuating, replaceable powerplant support |
Publications (1)
Publication Number | Publication Date |
---|---|
US3834476A true US3834476A (en) | 1974-09-10 |
Family
ID=23175593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00304223A Expired - Lifetime US3834476A (en) | 1972-11-06 | 1972-11-06 | Impact attenuating, replaceable powerplant support |
Country Status (1)
Country | Link |
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US (1) | US3834476A (en) |
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US4452332A (en) * | 1982-07-14 | 1984-06-05 | Towmotor Corporation | Apparatus and method for mounting a transmission |
US4817973A (en) * | 1986-08-22 | 1989-04-04 | Mazda Motor Corporation | Vehicle suspension assembly |
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US20090051154A1 (en) * | 2005-09-13 | 2009-02-26 | Ksm Castings Gmbh | Front-axle bracket, in particular for motor vehicles |
US20150035399A1 (en) * | 2013-07-30 | 2015-02-05 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Rotating electrical machine for vehicle |
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