EP0616661A1 - Mechanism for converting rotary to reciprocating rotary motion - Google Patents
Mechanism for converting rotary to reciprocating rotary motionInfo
- Publication number
- EP0616661A1 EP0616661A1 EP93921766A EP93921766A EP0616661A1 EP 0616661 A1 EP0616661 A1 EP 0616661A1 EP 93921766 A EP93921766 A EP 93921766A EP 93921766 A EP93921766 A EP 93921766A EP 0616661 A1 EP0616661 A1 EP 0616661A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- planet
- housing
- driveshaft
- carrier
- sun gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F01C1/063—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/02—Methods of operating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to mechanisms for converting between rotary and reciprocating rotary motion.
- Mechanisms converting the motion of vanes or pistons that reciprocate while rotating to rotary driveshaft motion and vice versa are numerous and well known in the art.
- a typical use is in a vane engine where each of a pair of concentric vane rotors is connected by a mechanism to an output shaft.
- the motion of a vane rotor rotating at some constant angular frequency, while simultaneously reciprocating at twice that frequency is converted by the connected mechanism to constant rotation of the output shaft.
- Mechanisms, able to generate a simple harmonic reciprocating motion component e.g. U.S. Pat. Nos. 1,330,629, 1,946,136
- U.S. Pat. Nos. 1,330,629, 1,946,136 have few load paths and transmit power through line contacts and therefore limit capacity.
- Other designs, with the reciprocating component approximating simple harmonic motion e.g. U.S. Patent No. 1,603,630
- the principal object of the present invention is to provide a simple, robust drive mechanism to transform between reciprocating rotary and rotary motion.
- Another object of the present invention is to provide a commercially feasible drive mechanism for a pump or internal combustion engine of the reciprocating rotating type.
- a drive mechanism of the present invention comprises a housing, driveshaft, crank linkage, planet, carrier, flywheel, and timing assembly. Details of lubrication, bearings, fasteners and the like are not discussed as they fall within the scope of competent engineering work.
- the driveshaft joumaled in the housing, carries a flywheel incorporating a ring gear.
- the carrier is joumaled in the flywheel and carries a planet which engages the ring gear.
- the timing assembly turns the carrier which drives the planet around the ring gear causing a point on the planet gear pitch cylinder to execute a reciprocating motion with respect to the flywheel.
- a crank linkage connects the planet along the reciprocating axis to an assembly revolving with the driveshaft imparting a reciprocating rotating motion to it.
- FIG. 1 shows assembled and exploded views of one embodiment of a drive mechanism incorporating the present invention.
- FIG. 2 shows assembled and exploded views of a second embodiment of the present invention adapted to an internal combustion engine design.
- FIG. 3 shows assembled and exploded views of a third embodiment of a drive mechanism incorporating the present invention using a cam type timing assembly.
- FIG. 1 shows a drive mechanism embodying the present invention.
- the embodiment shown provides a single load path and incorporates a geared timing arrangement.
- the driveshaft D is joumaled in bore H-l in the housing H.
- a flywheel F is affixed to the driveshaft.
- the flywheel has a bore F-l parallel to the driveshaft incorporating a ring gear F-2.
- the carrier C is joumaled in the flywheel bore F-l.
- the carrier has a bore C-1 to accommodate the planet P.
- the planet shaft P-l is joumaled in the carrier bore C-1 with the planet gear P-2 engaging the ring gear F-2.
- the pitch diameter of the ring gear is twice that of the planet gear.
- the carrier incorporates a timing gear C-2 which engages a sun gear H-2, stationary on the housing.
- the pitch diameter of the sun gear is twice that of the timing gear.
- the flywheel As the flywheel revolves with the driveshaft it drives the timing gear against the sun gear causing the carrier to revolve.
- the carrier drives the planet around the ring gear causing a point on the planet gear pitch cylinder to execute a reciprocating motion relative to the flywheel.
- the timing and sun gears are timed so that this reciprocating motion is normal to the line joining the driveshaft and carrier axes.
- a crankpin P-3, on the planet, has its axis parallel to that of the planet and passing through a point on the planet gear pitch cylinder.
- a slider S is rotatably mounted on the crankpin and rests in a slot M-l, part of a driven mechanism M coaxial with and pivoted about the driveshaft. The slider imparts a reciprocating rotating motion to the driven mechanism when the driveshaft is turned.
- the driven mechanism may be a vane rotor in a vane engine or pump.
- Figure 2 shows a pair of drive mechanisms, each with three load paths, in an arrangement of a vane rotor engine.
- Drive mechanisms combined to share the same flywheel and timing mechanism, may be independently timed for individual output phasing, allowing more than one mechanism to be driven.
- crankpin P-3 need not be normal to the line joining the driveshaft and carrier axes.
- the pinion may be directly connected to drive a piston in a rotating piston engine.
- crank linkage may incorporate one or more pivoting links rather than a slider.
- An alternative timing assembly may be comprised of a cam and roller arrangement as illustrated in FIG. 3 wherein a roller R on a pin PN, affixed to the planet gear pitch cylinder parallel to the crankpin, is guided by a cam CM, affixed to the housing, causing the pin to reciprocate as the drive shaft rotates.
- two rollers are used with an external cam, with the relative timing of the rollers maintained by the crankarm CA.
- the crankarm also serves as a connecting link (at CA-1) to the driven mechanism.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transmission Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Un mécanisme pour convertir un mouvement de rotation en un mouvement alternatif de rotation comprend un logement (H), un arbre d'entraînement (D), une liaison à manivelle, une roue de planétaire (P), un support (C), un volant (F) et un dispositif commandé (M). L'arbre d'entraînement (D), supporté par des paliers du logement (H) porte un volant (F) comprenant une couronne de planétaire (F-2). Le support est tenu dans des paliers du volant et il porte une roue de planétaire (P) qui s'engage avec la couronne de planétaire (F-2). Lorsque le volant (F) tourne avec l'arbre d'entraînement (D), le système de commande tourne le support qui entraîne la roue de planétaire (P) autour de la couronne de planétaire, ce qui provoque un mouvement alternatif d'un point du cylindre primitif du planétaire par rapport au volant. Une liaison à manivelle relie la roue planétaire suivant l'axe à mouvement alternatif à un agencement tournant avec l'arbre d'entraînement en lui conférant un mouvement de rotation alternatif.A mechanism for converting a rotational motion to an alternating rotational motion includes a housing (H), a drive shaft (D), a crank linkage, a sun gear (P), a carrier (C), a steering wheel (F) and a controlled device (M). The drive shaft (D), supported by bearings of the housing (H) carries a flywheel (F) comprising a sun gear ring (F-2). The support is held in bearings of the flywheel and it carries a sun gear (P) which engages with the sun gear (F-2). When the flywheel (F) rotates with the drive shaft (D), the control system turns the bracket which drives the sun gear (P) around the sun gear ring, causing a reciprocating motion of a point of the primitive cylinder of the planetary relative to the flywheel. A crank connection connects the planetary wheel along the reciprocating axis to a rotating arrangement with the drive shaft giving it reciprocating rotational motion.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2080432 | 1992-10-13 | ||
CA002080432A CA2080432A1 (en) | 1992-10-13 | 1992-10-13 | Mechanism for converting rotary to reciprocating rotary motion |
PCT/CA1993/000411 WO1994009268A1 (en) | 1992-10-13 | 1993-10-13 | Mechanism for converting rotary to reciprocating rotary motion |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0616661A1 true EP0616661A1 (en) | 1994-09-28 |
Family
ID=4150536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93921766A Withdrawn EP0616661A1 (en) | 1992-10-13 | 1993-10-13 | Mechanism for converting rotary to reciprocating rotary motion |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0616661A1 (en) |
AU (1) | AU5105393A (en) |
CA (1) | CA2080432A1 (en) |
WO (1) | WO1994009268A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9175562B2 (en) * | 2011-03-29 | 2015-11-03 | Breville Pty Limited | Rotary engine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1332064A (en) * | 1963-12-16 | |||
US3776202A (en) * | 1972-05-25 | 1973-12-04 | B Mesa | Rotary engine with sun gear drive |
GB1556950A (en) * | 1977-09-28 | 1979-12-05 | Baer J S | Rotary fluidmachine |
-
1992
- 1992-10-13 CA CA002080432A patent/CA2080432A1/en not_active Abandoned
-
1993
- 1993-10-13 EP EP93921766A patent/EP0616661A1/en not_active Withdrawn
- 1993-10-13 AU AU51053/93A patent/AU5105393A/en not_active Abandoned
- 1993-10-13 WO PCT/CA1993/000411 patent/WO1994009268A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9409268A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2080432A1 (en) | 1994-04-14 |
AU5105393A (en) | 1994-05-09 |
WO1994009268A1 (en) | 1994-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19940610 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19941202 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19960501 |