Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
  • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
• • 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
  • B60K5/12—Arrangement of engine supports
• • 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
  • B60K5/12—Arrangement of engine supports
  • B60K5/1208—Resilient supports

Definitions

• the invention relates to an assembly fastening element of a motor vehicle for fastening a drive train to a frame of the motor vehicle.
• the invention relates in particular to a transmission fastening element which has a bearing for the transmission in order to specifically dampen or weaken occurring moments and forces which can be generated on the aggregate side relative to the frame of the vehicle.
• gear-holding devices which, by means of elastic elements, permit damped mounting with respect to the vehicle body.
• damping or storage elements for one
• the attachment of gears or gear trains of a vehicle have spring-elastic bearings which are mounted between a support strut running transversely to the longitudinal axis of the vehicle and the longitudinal members of the vehicle frame.
• the bearing bracket for the gearbox is firmly attached to the longitudinal beams of the vehicle frame and therefore transfers the vibrations, forces and moments not damped by the bearing elements directly to the frame of the vehicle. This leads, in particular in the case of an increased moment load, to the fact that the longitudinal members can be subjected to a locally increased torsional load.
• Such an energy-absorbing fastening or mounting system for a transmission of a vehicle is known, for example, from GB 2 204 839 A.
• a cross member connected to the transmission is fixedly connected to respective longitudinal members of a vehicle frame.
• rubber-elastic bearing elements are provided which, due to their deformability, allow a certain weakening and damping of forces and vibrations occurring in the transmission.
• the disadvantage here is that the cross members on the gear train are firmly connected to the longitudinal members, so that moments that occur inevitably lead to torsional stress at the fastening points of the cross members.
• the central mounting between the gearbox itself and a crossbeam provided here allows for a slight reduction in the transmitted vibrations and forces. Effective storage without excessive stress on the frame of the vehicle is not possible.
• the additional gearbox support is designed so that torques of the gearbox can be effectively absorbed and supported by the rubber-metal bearing on the axis of rotation of the Gearbox have aligned line of action.
• the disadvantage here is on the one hand the considerably increased assembly and parts costs for this additional gear support and storage.
• this strut-like gear support can only be used to support the torque of the gear train. The vertical and horizontal forces of the gearbox are hardly absorbed or damped.
• the present invention is based on the object of providing an assembly fastening element of a motor vehicle which enables effective storage with regard to horizontal and vertical forces as well as moments of an assembly with reduced parts expenditure and improved effectiveness of the damping, even in limited installation space situations.
• the assembly fastening element according to the present invention for a motor vehicle for fastening a drive train or an assembly to a frame or body part of the motor vehicle has an assembly holder on which the drive train is fixedly mounted and at least one cross member for stiffening the vehicle frame. mens.
• the unit fastening element has a bearing for mounting the drive train with respect to the body of the vehicle, the at least one cross member and the unit holder being coupled to one another via the bearing and fastened as a composite to the vehicle frame of the motor vehicle in such a way that moments resulting from the drive train occur the crossbeam can be compensated.
• a highly effective support and bearing element for a drive train of a vehicle is provided, which prevents moments from being introduced into the frame of the vehicle body.
• a unit is, in particular, a transmission, a motor, a retarder or the like. Component of a drive train meant.
• a local load on the side members of the vehicle frame due to torsional stress at a fixed attachment point is avoided.
• the torques resulting from the drive train or the assembly of the vehicle are no longer absorbed on the frame, but are absorbed in the fastening element according to the invention via the cross member / assembly bracket assembly.
• the storage is still simple in its design and does not require complex torsion bearings or complex storage systems.
• the at least one cross member absorbs the moments of the drive train, so that only longitudinal, transverse and high forces are introduced into the frame of the vehicle body via the unit bracket and the bearings. There is therefore no torsional stress on the side members, and the side members are therefore less stressed than before.
• the assembly fastening according to the invention element consisting of a composite of a cross member and an assembly bracket and bearing elements possible to save space in the very confined area of the transmission of a vehicle. No additional parts and fasteners are required for the body cross member.
• the unit fastening element according to the invention also enables variable fastening of different assemblies or body shapes, since body-side fastening and mounting is possible independently of a cross member fixedly mounted on the body. Nevertheless, the required rigidity of the body is guaranteed in the area of the unit.
• the unit fastening element according to the invention can be fastened directly to a longitudinal member of the vehicle frame at various positions, for example, using conventional fastening means on the bearings of the bearing, without complex adjustments and assembly work being carried out on different types of vehicles.
• the cross member is torsionally rigid to absorb moments with respect to a longitudinal axis of the motor vehicle and is directly attached to the bearing. This ensures the absorption of moments on the part of the unit or drive train of an engine of a motor vehicle.
• the torsionally stiff design of the at least one cross member can take place, for example, via a corresponding profile shape, such as an L shape or U shape, or via a corresponding material strength and / or shape of the cross member.
• the crossbeam can also have a slightly curved shape, for example, so that the crossbeams provide support at an instant.
• the cross member is also provided in order to provide transverse stiffening of the vehicle body itself.
• the vertical mobility at the fastening points between the bearing elements and the cross member itself is designed to be correspondingly limited.
• the horizontal and vertical forces can be absorbed in the same way by the cross member, as can the moments of the drive train to be weakened and stored according to the invention.
• the aggregate fastening element according to the invention is thus improved in functionality compared to previously known elements of this type and, by means of a simple and compact composite element, enables the two functions of a transverse reinforcement of the vehicle body and a torque-absorbing mounting of the aggregate to be combined.
• the at least one cross member consists of two carrier parts which are connected laterally and at a distance from the unit holder itself at its ends to two elastic bearing elements of the bearing.
• the bearing elements serve on the one hand to connect the unit bracket to the parts of the cross member.
• the aggregate fastening element as a whole is fastened to a body part of the vehicle.
• the cross member can be mounted on the vehicle in the same way as the assembly bracket. The number of parts and the assembly effort are reduced.
• the spaced-apart cross-member parts arranged on the side of the unit bracket enable simple design of the cross-member elements, e.g. through simple bending and forming processes.
• the unit fastening element is also relatively light.
• the mounting of the unit fastening element consists of two elastic bearings, which are permanently mounted on the body side and each have fastening openings for the cross member and the unit holder.
• the fastening openings for the unit bracket and the cross member are each arranged, for example, approximately at right angles to one another and offset, so that the fastening of both sub-elements in one and the same elastic basic body of the bearing of the unit fastening element according to the invention can be mounted.
• the bearing is permanently mounted on the body side, for example via a bearing plate or a housing part of the elastic bearing.
• the bearing can consist of a composite of sheet metal and elastic materials, such as rubber or elastomeric plastics.
• the unit fastening element according to the invention can be fastened and assembled using simple screw connections.
• the assembly-fastening element according to the invention is relatively simple to produce, since the bearings are designed as simple elastic bearing elements.
• the unit holder is a central, for. B. U-shaped profile beam designed to transmit moments and forces.
• the unit holder is provided, for example, in its central region with a flat fastening section and has openings or bores at its ends for screwing to the bearings.
• the U-shape points in the downward direction, which provides a bar-like, relatively rigid holder for the forces coming from the unit.
• the forces and moments are transmitted directly from the unit to the unit holder, and the moments are transferred to the cross members on the bearing elements, whereas only the longitudinal, transverse and high forces on the part are transferred to the side members of the frame of the vehicle. This avoids torsional stress at the attachment points of the unit attachment. Only the harmless longitudinal, transverse and high forces are still transferred from the unit bracket directly to the frame part of the vehicle body, albeit in a weakened form due to the elastic mounting of the bearing elements.
• the unit mounting of the unit fastening element is in each case via two fastening units mounted in the vertical direction. fastened medium via corresponding mounting openings of the storage.
• the unit bracket offers firm support in the vertical direction through the support on the side longitudinal members and their vertically aligned fastening elements, such as screws.
• sufficient stability of the holder in the transverse and longitudinal directions with respect to the vehicle longitudinal axis of the vehicle is ensured. Nevertheless, torque support according to the invention with the unit fastening element is possible by means of the cross-member elements additionally and parallel to the unit holder.
• the at least one cross member of the unit fastening element is mounted on the bearing via two fastening means each mounted in the horizontal direction via corresponding fastening openings. Due to the two fastenings on the bearing, the cross member or the parts of the cross member have the moment-absorbing property, since rotation with respect to the bearing element, as would be present with only one uniaxial attachment, is avoided. This ensures good torque absorption from the unit via the unit bracket and the bearings on the cross member.
• the mounting consists of block-like, elastic mounting elements, each with a housing or a mounting plate.
• the mounting plate has openings for detachable mounting on the vehicle frame, for example four opening holes. Corresponding fastening screws can be screwed to the side member of the vehicle frame in the opening holes.
• the block-like formation of the bearing elements from an elastic material, such as rubber, can be realized in any way known to the person skilled in the art.
• a sheet metal housing open on one side with a base plate for fastening the load be provided in which one or more layers of elastic material are mounted.
• the layers of elastic material and sheet metal can be connected, for example, by gluing or any other means known to the person skilled in the art.
• FIG. 1 is a perspective view of an embodiment of an aggregate fastening element according to the present invention.
• FIG. 1 A first figure.
• FIG. 2c shows a top view of the unit fastening element from FIG. 1.
• the unit fastening element 10 is designed as a transmission fastening element 10 and, according to FIG. 1, is designed with a two-part cross member 2, consisting of a first and a second cross member part 21, 22.
• the transmission fastening element 10 here consists of a composite of a central transmission holder 1 and L-shaped cross member parts 21, 22 arranged laterally to it, which together with the transmission holder 1 via bearings 3, which are explained in more detail with reference to FIGS. 2a to 2c , 4 are mounted.
• the bearings 3, 4 in turn have fastening openings 11, by means of which they can each be fastened to a side member of a vehicle frame (not shown).
• the bearings 3, 4 each have a flat mounting plate, which points outwards from the gearbox mounting element 10.
• the bearings 3, 4 instead of the flat design of the fastening plate, it would also be conceivable for the bearings 3, 4 to rest only in the region of the fastening openings 11 on the associated longitudinal member.
• the points of the bearing 3, 4 which are in contact with the associated longitudinal beam can protrude and lie in one plane or offset from one another.
• the bearings 3, 4 are furthermore provided with elastic materials, so that moments and forces are transmitted and partial absorption is made possible.
• the gear holder 1 has a flat section in its central region and fastening openings 12 for fastening a gear (not shown).
• the transmission or the transmission train generates moments and forces during operation of the vehicle, which are received by the transmission holder 1 and transmitted to the bearings 3, 4. According to the invention, the moments are absorbed by the cross member 2 specifically designed for this purpose. In this way, by means of the transmission fastening element 10 according to the invention, only transverse and longitudinal forces, but no moments, are transmitted to the lateral fastening sections of longitudinal members via the bearings 3, 4.
• the cross member parts 21, 22 have a slightly curved shape and an outwardly projecting, torsionally rigid L-shape.
• the cross member parts 21, 22 are mounted on the respective end bearings 3, 4 by means of two horizontally arranged fastening screws 8, 9 per side of the bearing 3, 4 in a manner which will be explained in more detail below with reference to FIGS. 2a to 2c.
• the central, beam-like gear holder 1 is in turn also mounted on the bearing 3, 4 in each case by means of two fastening screws 7 in a manner which will also be explained in more detail below with reference to FIGS.
• the gear holder itself is designed such that it has sufficient rigidity to hold a gear train, and in this exemplary embodiment it is designed as an essentially U-shaped bar with a flat central region. Alternatively, it would also be conceivable to use a connecting element composed of several parts as a beam. Through the direct connection of the cross member 2 and the one hand. Gear holder 1 via bearings 3, 4 provided at each end, a compact and highly effective mounting and mounting element is provided. A transmission of moments from the gear train is absorbed without being introduced into the body.
• the transmission fastening element 10 according to the invention is very compact in its construction and does not require any additional, respective fastening elements for the cross member 2 and the transmission holder 1 itself.
• the bearings 3, 4 serve to jointly fasten the cross member 2 and the transmission holder 1 Storage in the element according to the invention is extremely easy to implement and can be implemented, for example, from a mixed metal-rubber mounting. Any other type of bearing known to the person skilled in the art for damping and mounting gearboxes and / or motors can also fit.
• 2a, 2b and 2c show respective side views and a top view of the exemplary embodiment of the transmission fastening element 10 according to FIG.
• the curved shaped support parts 21, 22 are not connected directly to the longitudinal beam of a frame of a vehicle, but via the bearings 3 , 4 of the gearbox holder 1.
• the bearings 3, 4 have a fastening housing 13 which is open on one side and which surrounds elastic material layers 14 of the bearings 3, 4.
• the elastic layers 14 can be made of a rubber material or the like, for example.
• the mounting plate of the bearing housing 13 is provided on the back with four mounting openings 11, by means of which the bearings 3, 4 can be mounted on corresponding body parts of the vehicle frame.
• the two cross member parts 21, 22 are fixed via the two fastening screws 8, 9 on the side cheeks 15, 16 of the bearing housing 13 arranged on opposite sides of the bearings 3, 4.
• fastening screws 8, 9 are thus provided for each bearing 3, 4 in order to fasten the two cross member parts 21, 22 to the bearing housing 13.
• fastening screws 8, 9 which can be pushed through the elastic layers 14, so that two fastening screws 8, 9 are provided for each bearing 3, 4.
• fastening screws 7 arranged transversely thereto, by means of which the gear holder 1 is connected at its respective ends to the bearings 3, 4.
• the beam 1 is supported on the elastic layers 14 of the bearings 3, 4 and is not connected to the bearing housing 13.
• a support plate or the like which cannot be seen in the figures, is attached to the top of the elastic layer 14 on both bearings 3, 4. preferably made of a metal material, which is integrated into the elastic layer. Threaded holes or the like for fastening the screws 7 are also arranged on this support plate.
• the integration of the support plates into the elastic layers 14 of the two can also be used Bearing 3.4 can be dispensed with. In this way, moments which are not transmitted to the vehicle frame from a transmission train fastened to the transmission holder 1 via the fastening openings 12, but are instead absorbed by the bearings 3, 4.
• the cross member parts 21, 22, however, are extremely rigidly connected to the associated side members or other parts of the frame via the bearing housings 13 of the bearings 3, 4.
• the transmission fastening element 10 according to the invention is extremely compact and does not require any additional fastening elements and separate parts for mounting the transmission or stiffening a vehicle frame. Due to the releasable fastening of the element and the assumption of a double function, namely on the one hand a gear holder and bearing and on the other hand a stiffening in the sense of a cross member of a body, the variability in the installation in different vehicle types and with different dimensions is increased.
• the transmission fastening element 10 according to the invention can, for example, be positioned and mounted differently in various types of vehicles via a series of fastening openings provided on the side rails of a vehicle frame, depending on the respective position. Complex machining and assembly for different vehicle types with different dimensions in the transmission area of the vehicle body is avoided.
• the invention is not limited to the exemplary embodiment described above.
• the bearings 3, 4 can be replaced by another type of bearing and can be designed, for example, as a combined metal bushing / rubber bearing or the like.
• two separate crossbeam parts 21, 22 it is also possible to provide only a single crossbeam which, for example, can be in the form of a U-shaped crossbeam which encloses the gearbox mount.
• the present fastening element can also can be used to attach a motor, a retarder or the like component of a drive train.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Vibration Prevention Devices (AREA)
• Arrangement Of Transmissions (AREA)
• Body Structure For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34399427

Family Applications (1)

Country Status (7)

Families Citing this family (9)

Family Cites Families (4)

• 2003
  • 2003-10-10 DE DE10347096A patent/DE10347096A1/de not_active Withdrawn
• 2004
  • 2004-09-09 WO PCT/EP2004/010049 patent/WO2005039959A1/de not_active Application Discontinuation
  • 2004-09-09 EP EP04764986A patent/EP1670672A1/de not_active Withdrawn
  • 2004-09-09 CN CNA200480029665XA patent/CN1867478A/zh active Pending
  • 2004-09-09 KR KR1020067006610A patent/KR20060120653A/ko not_active Application Discontinuation
  • 2004-09-09 JP JP2006529974A patent/JP2007509788A/ja not_active Withdrawn
  • 2004-09-09 BR BRPI0415208-5A patent/BRPI0415208A/pt not_active Application Discontinuation

Non-Patent Citations (1)

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