Abstract 987,210. Connecting-rods. ROBERT BOSCH G.m.b.H. Feb. 28, 1964 [March 1, 1963], No. 8318/64. Heading F2T. In a compressor a piston 10 is driven from a crank-shaft 3 by a connecting rod which is transversely flexible in the direction of the crank-shaft axis and rigid in a plane containing the piston axis and normal to the crank-shaft axis. In the embodiment shown in Figs. 1-3, the connecting rod 6 comprises a leaf spring 12 secured, as by rivets, between two reinforcements 17, 18 to leave two unstrengthened portions x and y of the spring between the reinforcements and the rod end bearings 7 and 8. End portions 15 and 16 of the spring 12 are held in semi-annular grooves 23 and 24 respectively in the bearings 7 and 8 by members 19 and 20 secured by radial lugs 25-28 partially sheared off the groove walls and peened over the members 19, 20. In a modification, Fig. 6 (not shown), the connecting rod comprises a rigid middle portion connected to each of the end bearings by a leaf spring. In a further modification, Fig. 7, the rod 50 is made from plastics and has a stiff central portion 51 connected by narrow webs 52, 53 with the end bearings 54, 55. Parts of the rod 50 may be reinforced with metal.
A CONNECTING ROD TRANSMISSION FOR COMPRESORS OR THE LIKE, COMPRISING, IN COMBINATION, ROTARY CRANK MEANS HAVING A PREDETERMINED CRANK AXIS ABOUT WHICH SAID CRANK MEANS ROTATES; CYLINDER MEANS HAVING AN AXIS PERPENDICULAR TO SAID CRANK AXIS; A PISTON AXIALLY SLIDABLE IN SAID CYLINDER MEANS; AND CONNECTING ROD MEANS HAVING A PAIR OF OPPOSED END PORTIONS RESPECTIVELY CONNECTED OPERATIVELY WITH SAID CRANK MEANS AND PISTONS MEANS FOR RECIPROCATING SAID PISTON MEANS IN SAID CYLINDER MEANS IN RESPONSE TO ROTATION OF SAID CRANK MEANS, SAID CONNECTING ROD MEANS BEING OPERATIVELY CONNECTED TO SAID PISTON MEANS FOR TURNING MOVEMENT RELATIVE THERETO ABOUT A TURNING AXIS SUBSTANTIALLY PARALLEL TO SAID CRANK AXIS, AND SAID CONNECTING ROD MEANS HAVING IN THE REGION OF SAID END PORTIONS THEREOF A PAIR OF SPRINGY YIELDABLE PORTIONS, RESPECTIVELY, FORMING BUT A SMALL FRACTION OF THE ENTIRE CONNECTING ROD MEANS, EACH OF SAID YIELDABLE PORTIONS INCLUDING A FLAT SPRINGY PLATE LOCATED IN A PLANE SUBSTANTIALLY NORMAL TO SAID TURNING AXIS AND THE CRANK AXIS, SAID CONNECTING ROD MEANS BEING SUBSTANTIALLY RIGID EXCEPT FOR SAID YIELDABLE PORTIONS THEREOF AND INCLUDING A RELATIVELY RIGID PLATE STRUCTURE ENGAGING OPPOSED FACES OF SAID SPRINGY PLATE AT ALL PARTS THEREOF EXCEPT SAID YIELDABLE PORTIONS SO THAT THE LATTER ARE EXPOSED AND ARE FREE OF YIELD, SAID PLATE STRUCTURE INCLUDING ONE PLATE ENGAGING ONE FACE OF SAID SPRINGY PLATE AND A SECOND PLATE ENGAGING THE OTHER FACE OF SAID SPRINGY PLATE AND HAVING EDGE PORTIONS OF CHANNEL-SHAPED CONFIGURATION RECEIVING IN THEIR INTERIORS OPPOSED EDGES OF SAID SPRINGY PLATE AND SAID ONE PLATE AND SAID CONNECTING ROD MEANS YIELDING AT SAID YIELDABLE PORTIONS THEREOF TO COMPENSATE FOR ANY LACK OF PARALLELISM BETWEEN SAID TURNING AXIS AND CRANK AXIS.
Claim 2
Dependent Claim
281 words
A CONNECTING ROD TRANSMISSION FOR COMPRESORS OR THE LIKE, COMPRISING, IN COMBINATION, ROTARY CRANK MEANS HAVING A PREDETERMINED CRANK AXIS ABOUT WHICH SAID CRANK MEANS ROTATES; CYLINDER MEANS HAVING AN AXIS PERPENDICULAR TO SAID CRANK AXIS; A PISTON AXIALLY SLIDABLE IN SAID CYLINDER MEANS; AND CONNECTING ROD MEANS HAVING A PAIR OF OPPOSED END PORTIONS RESPECTIVELY CONNECTED OPERATIVELY WITH SAID CRANK MEANS AND PISTONS MEANS FOR RECIPROCATING SAID PISTON MEANS IN SAID CYLINDER MEANS IN RESPONSE TO ROTATION OF SAID CRANK MEANS, SAID CONNECTING ROD MEANS BEING OPERATIVELY CONNECTED TO SAID PISTON MEANS FOR TURNING MOVEMENT RELATIVE THERETO ABOUT A TURNING AXIS SUBSTANTIALLY PARALLEL TO SAID CRANK AXIS, AND SAID CONNECTING ROD MEANS HAVING IN THE REGION OF SAID END PORTIONS THEREOF A PAIR OF SPRINGY YIELDABLE PORTIONS, RESPECTIVELY, FORMING BUT A SMALL FRACTION OF THE ENTIRE CONNECTING ROD MEANS, EACH OF SAID YIELDABLE PORTIONS INCLUDING A FLAT SPRINGY PLATE LOCATED IN A PLANE SUBSTANTIALLY NORMAL TO SAID TURNING AXIS AND THE CRANK AXIS, SAID CONNECTING ROD MEANS BEING SUBSTANTIALLY RIGID EXCEPT FOR SAID YIELDABLE PORTIONS THEREOF AND INCLUDING A RELATIVELY RIGID PLATE STRUCTURE ENGAGING OPPOSED FACES OF SAID SPRINGY PLATE AT ALL PARTS THEREOF EXCEPT SAID YIELDABLE PORTIONS SO THAT THE LATTER ARE EXPOSED AND ARE FREE OF YIELD, SAID PLATE STRUCTURE INCLUDING ONE PLATE ENGAGING ONE FACE OF SAID SPRINGY PLATE AND A SECOND PLATE ENGAGING THE OTHER FACE OF SAID SPRINGY PLATE AND HAVING EDGE PORTIONS OF CHANNEL-SHAPED CONFIGURATION RECEIVING IN THEIR INTERIORS OPPOSED EDGES OF SAID SPRINGY PLATE AND SAID ONE PLATE AND SAID CONNECTING ROD MEANS YIELDING AT SAID YIELDABLE PORTIONS THEREOF TO COMPENSATE FOR ANY LACK OF PARALLELISM BETWEEN SAID TURNING AXIS AND CRANK AXIS.