摘要:
A pneumatic spring element includes a rubber-elastic peripheral wall and two rigid end walls defining a chamber therebetween, a bellows-like spring body disposed inside the chamber defining an outer sub-chamber between spring body and the peripheral wall, the spring body being subjected to compressed air in the interior thereof, and an electroviscous fluid filling outer sub-chamber and being controlled by an electrical field.
摘要:
A two-chamber engine mount with hydraulic damping includes a housing having rubber-elastic peripheral walls and an engine side to be connected to an engine, an intermediate plate dividing the housing into fluid-filled chambers being in communication with each other through a penetration formed in the intermediate plate, and an active vibration generator being integrated into one of the fluid-filled chambers closest to the engine side and being controllable in dependence on predetermined operating parameters.
摘要:
An electroviscous fluid comprising more than 25% by weight of silica gel with a water content of 1 to 15% by weight, a non-conductive oily phase dispersion medium, 1 to 30% by weight of one or more polymers soluble in the dispersion medium, the weight percentage being based on the water-containing silica gel, and the polymers having a molecular weight in the range of from 5.times.10.sup.3 to 10.sup.6 and containing 0.1 to 10% by weight of N and/or OH and 25 to 83% by weight of C.sub.4 to C.sub.24 -alkyl groups. Such electroviscous fluids are useful for transmitting powerful forces by means of a low electronic output, for example, in hydraulic valves and shock absorbers.
摘要:
A device for the simultaneous sealing of the window pane of a door and the region between the upper edge of the door and the roof region of a motor vehicle includes a single elastomer profile having an outer front surface, the profile including:at least one element for sealing the window pane;at least one element for sealing the region between the upper edge of the door and the roof;a mounting region having two U-shaped recesses formed therein defining holding lips clamped to projecting sheet metal edges of the frame of the door; anda reinforcement insert disposed in the profile, surrounding the two U-shaped recesses and extending to the outer front surface of the profile.
摘要:
The invention relates to a two-chamber engine bearing, in particular for motor vehicles, which has hydraulic damping, the liquid-filled chambers of which have rubber elastic peripheral walls and are connected to each other by a line which is provided in the rigid, elastically-mounted intermediate plate. To improve the damping, the intermediate plate has, according to the invention, an extended cavity which has an approximately rectangular longitudinal cross-section in the area of the middle plane thereof, the length and width of the cavity being many times its height and the cavity being connected to the upper chamber at one end by a vertical passage and connected to the lower chamber at the other end by a corresponding passage.
摘要:
A device for the manufacture of molded parts from molding materials, includes a molding tool being completely closed, having a molding cavity formed therein and being divisible, a heating device having two heating plates disposed on top of each other and fastened to the molding tool, the heating plates being in mutual contact along respective contact surfaces thereof, at least one of the contact surfaces having slots formed therein, and tubular electrical heating elements with metal cladding press-fitted in the slots.
摘要:
Device for testing the Shore-hardness of rubber-like (elastomer) bodies, particularly rubber/metal parts, comprising a measuring head with a movable penetrator which can be positioned onto the surface of the rubber-like body, a rotatable circular plate, mounting elements which hold said rubber-like bodies, which are arranged at the circumference of the circular plate, an adjustable holding arrangement for the measuring head, and an actuating device for the measuring head.
摘要:
A vulcanizable rubber mixture for producing a leather-hard rubber, which mixture is suitable for use in making a composite profile produced by simultaneous extrusion and vulcanization of two different grades of rubber. The composite profile has a region of leather-hard rubber which serves as the clamping part, and a second zone made integrally therewith, of ordinary soft, rubber-elastic rubber. The vulcanizable rubber mixture for producing a leather-hard mixture contains 20 to 40 parts by weight of polar rubber, i.e. rubber which splits off acid groups under vulcanizing conditions, e.g. polychloroprene, and 60 to 80 parts non-polar rubber, i.e. will not split off said groups, e.g. nitrile rubber, 15 to 50 parts phenolformaldehyde reinforcement resin, 0.5 to 4 parts hexamethylene tetramine, and 0.5 to 3 parts sulfur. Conventional accelerators and zinc oxide are added. Excessive pore formation during the vulcanizing is repressed by the addition of the polar rubber which splits off acid groups under vulcanizing conditions. Other excellent properties are increased toughness in cutting and stamping, reduced splintering, low shrinkage, good injectability, and insignificant production of sulfur dioxide.
摘要:
An engine mount with hydraulic damping, includes at least one fluid-filled working chamber having a substantially conical shell-shaped rubber-elastic peripheral wall serving as a support spring, a support ring being connected to the peripheral wall and having an upper surface, a thrust element with adjustable radial stiffness in the form of a holding plate vulcanized to the upper surface of the support ring and closing the working chamber along with the support ring, the holding plate having a central cylindrical portion projecting freely into the working chamber and having an inner surface, a bell-shaped expanded ring projecting from the inner surface on the cylindrical portion toward the peripheral wall and having a free end, and a rubber-elastic membrane closing the free end of the expanded ring enclosing a volume of air.
摘要:
An active two-chamber engine mount with hydraulic damping includes rubber-elastic peripheral walls, a rigid intermediate plate disposed between the walls defining chambers, an electro-viscous fluid filling the chambers and flowing in a given fluid flow direction through at least one overflow opening formed in the rigid intermediate plate. At least two mutually parallel metallic mesh plates are successively disposed across the given fluid flow direction in the vicinity of the at least one overflow opening, and a control device for alternatingly applying an electric field to the mesh plates as electrodes for controlling the viscosity of the fluid.