Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1996-05-24
1998-04-07
Bonck, Rodney H.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
92 71, 417269, 418 53, F01C 900, F04C 900, F16H 2300
Patent
active
057351724
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND ART
It is an object of the present invention to provide a swashplate machine which addresses the above desirata.
In my U.S. Pat. No. 3,942,384 I describe a swashplate machine comprising a housing, a shaft supported by the housing, the shaft mounting a reciprocating ball mounted swashplate via an angularly off-set journal arrangement such that rotation of the shaft will cause reciprocation of the swashplate within a defined chamber(s). The swashplate chamber is divided by a baffle.
There have been a number of aspects of the machine described in U.S. Pat. No. 3,942,384 which I have discovered could be improved, namely:
The object of the present invention is to address the above-mentioned aspects which I have found substantially improve the serviceability and efficiency of the machines.
DISCLOSURE OF INVENTION
According to the present invention there is provided a swashplate machine comprising a casing having end assemblies, a pair of end cones each having opposed semi-spherical surfaces and defining with the casing a ball assembly and swashplate chamber, an axle journalled with respect to the casing supporting a ball assembly and a swashplate which occupy the swashplate chamber, a baffle located with respect to the casing which intersects and divides the swashplate chamber, wherein at least one of said cones is slidably mounted in the casing on a guide, the arrangement being such that during operation of the machine limited axial movement of said at least one cone is possible whilst rotational movement of the cone is prevented by said guide.
The said at least one end cone can have sealing means between its outer surface and the casing.
The guide can be provided by pins.
The pins can be fixed to said at least one end cone and slide in an apertures in the adjacent end assembly.
Biasing means can be provided between said at least one moveable end cone and its adjacent end assembly.
According to a further aspect of the present invention there is provided a swashplate machine comprising a casing having end assemblies, a pair of end cones each having opposed semi-spherical surfaces and defining with the casing a ball assembly and swashplate chamber, an axle journalled with respect to the casing and supporting a ball assembly and a swashplate which occupy the swashplate chamber, an oscillatable bifurcated pivot between said ball assembly and said swashplate, said pivot having a longitudinal slot between the two bifurcations thereof connected to each other by a root mounted to said ball assembly, and said swashplate fitting in the slot of said pivot.
The outer ends of the bifurcations can be semi-spherical and engage a semi-spherical inner surface of said casing and there being a rubbing sealing member on an inner part of said oscillatable pivot, the sealing member conforming to the spherical surface of said spherical ball.
The sealing member can be biased outwardly by a spring.
The root of said bifurcated member can be provided with a radiused surface.
According to yet a further aspect of the present invention there is provided a swashplate machine comprising a casing having end assemblies, a pair of end cones each having opposed semi-spherical surfaces and defining with the casing a ball assembly and swashplate chamber, an axle journalled with respect to the casing and carrying a ball assembly and swashplate which occupy the swashplate chamber, said shaft having at least one passageway therein, said passageway being open to a bearing at one end and open externally of said casing at the other end, and a non-return valve provided in said passageway, the construction and arrangement being such that said non-return valve allows a lubricant provided in said passageway to pass through said passageway in a direction from the end open externally of said casing toward the end open to said bearing only.
The lubricant can be provided in a reservoir located externally of said casing, said reservoir having a lubricant outlet which is open to the end of said passageway open externally of said casing.
This inventi
REFERENCES:
patent: 3942384 (1976-03-01), Parker
patent: 3946617 (1976-03-01), Moriarty
patent: 3982860 (1976-09-01), Sraebler
patent: 4008987 (1977-02-01), Ritchie
patent: 4125030 (1978-11-01), Hackett
patent: 5242281 (1993-09-01), Hartley et al.
Bonck Rodney H.
Grabow Troy
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