Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
  • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
  • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
  • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
• • 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
  • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F2224/00—Materials; Material properties
  • F16F2224/02—Materials; Material properties solids
  • F16F2224/0241—Fibre-reinforced plastics [FRP]

Definitions

• the present invention relates to a damping unit bearing, in particular engine mount for a motor vehicle, with a suspension spring which limits a filled with a working fluid working chamber.
• Such aggregate bearings are designed as hydraulic or pneumatic damping bearings. These have a suspension spring which surrounds a filled with a working fluid working chamber.
• a suspension spring which surrounds a filled with a working fluid working chamber.
• the suspension spring consists of a rubber-elastic, vulcanizable material.
• the customarily used natural rubber (NR) has a relatively low long-term temperature resistance of about 80 0 C.
• Synthetic rubber (EPDM) has a long-term temperature resistance up to about 120 0 C. An exposure of these materials with continuous temperatures above 100 0 C or 140 0 C leads to a destruction of the material. In today's motor vehicles used in high-performance engines, especially in conjunction with noise-encapsulated engines, a higher temperature resistance is required.
• a damping unit bearing which has an annular spring body made of fiber composite material.
• the spring body consists of several layers of Kunststoffharzgetränkter fibers, which are wrapped mainly transversely to the direction of stress circumferentially.
• As a reinforcing fiber are essentially glass fibers, but also carbon fibers in question.
• As curable matrix materials are essentially thermosets or thermoplastics, such as polyether ether ketone, use.
• the annular spring body surrounds a hydraulic damping device which has a working chamber enclosed by a bellows. The working chamber is connected via a damping channel with a compensation chamber. Both chambers are filled with a hydraulic fluid.
• Such an aggregate bearing has a limited temperature resistance due to the existing of an elastomeric bellows bellows.
• the invention has for its object to propose a unit bearing, which has a high temperature resistance at a low rate under preload.
• the suspension spring consists of a fiber composite material, and that the matrix material of the fiber composite material is a thermoplastic material with high thermal stability, which is processable by deep drawing.
• the working chamber is limited by the suspension spring, which simultaneously absorbs the static loads occurring.
• the unit bearing according to the invention is characterized by a high temperature resistance. Furthermore, only a small amount of preload occurs, which does not significantly reduce linear free travel over the lifetime. Furthermore, the matrix material causes only a slight dynamic hardening occurs.
• the deep-drawn suspension spring may have any suitable geometric shape. In particular, the suspension spring can be rotationally symmetrical or rectangular.
• the unit bearing according to the invention is characterized by a high vibration resistance and low weight and is still inexpensive to produce.
• polyphenylene sulfide is used as the matrix material. This material is characterized by a high heat resistance, low creep and high bending strength. Likewise, polyphenylene sulfide offers very high resistance to hydrolysis. In an advantageous embodiment, it is proposed that glass fibers, carbon fibers or aramid fibers be used as reinforcing fibers.
• the suspension spring includes a layer structure of fibers, which is present as a fabric and / or unidirectional fiber layer.
• the layer structure is formed as a single layer or multilayer.
• a wave contour is advantageously formed in the suspension spring.
• the suspension spring is advantageously fixed to a floor or intermediate plate.
• the base plate can also be present as a structural part of the vehicle body.
• a bearing pin is fixed to the suspension spring.
• the bearing pin can be advantageously poured into the matrix material of the suspension spring.
• the unit bearing is designed as a pneumatically damping bearing, wherein the working chamber with a gas, in particular air, is filled.
• a gas in particular air
• the use of air as a damping medium also a high temperature resistance of> 130 0 C and a temperature independence to -30 0 C is achieved.
• such a unit bearing is characterized by low costs compared to hydraulically damping bearings.
• the working chamber is connected via a nozzle channel with the environment or with a compensation chamber.
• an inner side of the suspension spring is provided with a layer which reduces the volume of the working chamber.
• the layer consists of a closed-cell foam plastic with high temperature resistance.
• the unit bearing is designed as a hydraulically damping bearing, wherein the working chamber is filled with a hydraulic fluid.
• the working chamber is connected via a damping channel with a compensation chamber.
• the working chamber is bounded by a compensating membrane of an elastic material.
• suspension spring of fiber composite material has a relatively high volume stiffness, a decoupling device for decoupling small amplitudes is advantageously provided.
• the decoupling device may be formed in an advantageous embodiment as applied to the inner wall of the suspension spring compressible material layer.
• FIG. 1 is a perspective view of a first embodiment of a unit bearing according to the invention, which is designed as a pneumatically damping bearing, 2 is a vertical section through Fig. 1,
• Fig. 3 is a vertical section through a second embodiment of a unit bearing according to the invention.
• Fig. 4 is a vertical section through a third embodiment of a unit bearing according to the invention.
• the unit bearing 10 shown in Figs. 1 and 2 is designed as a pneumatically damping bearing, which is used as an engine mount.
• the unit bearing 10 has a working chamber 15 which is bounded by a suspension spring 11.
• the suspension spring 11 consists of a fiber composite material, wherein the matrix material of the fiber composite material is a thermoplastic material with high temperature resistance.
• the Materixmaterial consists of polyphenylene sulfide (PPS). This material is characterized by a high heat resistance (depending on the type between 130 0 C and 240 0 C), low creep and high bending strength. Furthermore, there is a very good hydrolysis resistance.
• the fiber composite material has a layer structure of fibers, wherein in the present case a single layer of a fabric made of glass fibers is provided. Alternatively, however, it is also possible to provide a layer composite with a plurality of stacked individual layers.
• the rotationally symmetrical suspension spring 11, which has a bell shape, is obtained by deep drawing, wherein the wave structure 14 is formed during deep drawing. Due to the wave structure 14, the suspension spring 11 has a high mobility.
• a bearing pin 12 is fixed, which is cast in the matrix material of the suspension spring 11. On the bearing pin 12, the determination of the unit bearing 10 takes place on the motor, not shown, of a motor vehicle.
• a plurality of fastening bolts 13 are provided which serve to fix the unit bearing 10 to the vehicle body.
• the unit bearing 10 is characterized by a high temperature resistance, which is achieved on the one hand by the temperature resistance of the suspension spring and on the other hand by the damping medium used (air).
• FIG. 3 further embodiment of an assembly bearing 10 according to the invention, the description of the already introduced reference numerals for the same or functionally identical parts is used, has a provided on the inside of the suspension spring 11 coating 17, the plastic of a closed-cell foam with high temperature resistance consists. For this purpose, for example, find EPDM use.
• the coating 17 a significant reduction of the volume of the working chamber 15 is achieved.
• the suspension spring 11 is supported on a bottom plate 18, in the center of a nozzle channel 19 is introduced.
• the illustrated in Fig. 4 further embodiment of an assembly bearing 10 according to the invention is designed as a hydraulic damping bearing.
• the suspension spring 11 in this case surrounds a working chamber 15 which is filled with a hydraulic fluid.
• the working chamber 15 is separated by means of an intermediate plate 21 from a compensation chamber 20.
• the compensation chamber 20 is bounded by an elastic compensation membrane 22.
• Ü Via a damping channel 23, the working chamber 15 is in hydraulic communication with the compensation chamber 20.
• a decoupling device 24 is provided for decoupling small amplitudes. This is designed as a compressible material layer, for example of a closed-cell foam.
• a suspension spring 11 which consists of a fiber composite material, wherein the matrix material of the fiber composite material is a thermoplastic material with high thermal stability, which is processable by deep drawing.
• the suspension spring used 11 causes a very low rate in preload, the low linear Freiweg is not significantly reduced over the life of the unit bearing 10.
• the unit bearing 10 is characterized by a low dynamic hardening.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Acoustics & Sound (AREA)
• Aviation & Aerospace Engineering (AREA)
• Physics & Mathematics (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Vehicle Body Suspensions (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
• Combined Devices Of Dampers And Springs (AREA)
• Reinforced Plastic Materials (AREA)
• Vibration Prevention Devices (AREA)
• Support Of The Bearing (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38596897

Family Applications (1)

Country Status (6)

Cited By (5)

Families Citing this family (4)

Citations (6)

Family Cites Families (22)

• 2006
  • 2006-08-03 DE DE102006036343A patent/DE102006036343B4/de not_active Expired - Fee Related
• 2007
  • 2007-08-01 US US12/376,229 patent/US20100025901A1/en not_active Abandoned
  • 2007-08-01 WO PCT/EP2007/057985 patent/WO2008015247A1/de not_active Ceased
  • 2007-08-01 JP JP2009522278A patent/JP4802278B2/ja not_active Expired - Fee Related
  • 2007-08-01 EP EP07788150A patent/EP2047138B1/de not_active Not-in-force
  • 2007-08-01 KR KR1020097004381A patent/KR101393020B1/ko not_active Expired - Fee Related

Patent Citations (6)

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