Back to results
US 4,662,267 AGranted
Swash plate type compressor shoe
AssigneesKabushiki Kaisha Toyoda Jidoshokki Seisakusho, Taiho Kogyo Co., Ltd.
InventorsYoshihiro Kaku, Keiichiro Otsu
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneesKabushiki Kaisha Toyoda Jidoshokki Seisakusho, Taiho Kogyo Co., Ltd.
InventorsYoshihiro Kaku, Keiichiro Otsu
Estimating the term…
There are disclosed a shoe which is interposed between a swash plate and a piston of a swash plate type compressor and which converts rotary movement of the swash plate into reciprocal movement of the piston, and a method for manufacturing the same. The shoe has a hemispherical part which is in slidable contact with the surface of a piston defining a hemispherical recess, and a flat end face which is in slidable contact with a bottom end face of the swash plate. According to the method of the invention, a columnar element is compressed in the axial direction for plastic deformation in such a manner that one end of the columnar element is deformed along the inner surface of a hemispherical recess of a die while the other end is urged against the flat end surface of another die. A shoe can be easily manufactured with this method, which has a flank between the hemispherical part which is in slidable contact with the surface of the piston defining the hemispherical recess and the bottom end face of the swash plate which is in slidable contact with the swash plate. According to this method, a hole of a predetermined size may alternatively be formed at the end face of a columnar part of the element, and the end face of the columnar part is cut into a conical shape while reducing the diameter of the hole toward the opening side thereof. Still alternatively, the periphery of the end face of the columnar part may be cut into a conical shape and then pressed to form a hemispherical part. A great flow of the material and local exertion of a high load on the element are prevented.
A swash plate type compressor shoe which is interposed between a swash plate rotated by a rotating shaft inside a cylinder block and a piston which is slidably fitted inside a cylinder bore and which converts rotary movement of said swash plate to reciprocal movement of said piston, wherein said shoe has a hemispherical part and a flat bottom end face, said bottom end face is in slidable contact with an end face of said swash plate, and a surface of said hemispherical part is in slidable contact with a surface of said piston forming a hemispherical recess, wherein said shoe has a curved flank between said hemispherical part and said bottom end face which is gradually reduced in cross-sectional area from said hemispherical part toward said bottom end face, defining a clearance between said flank and an opposing part of said hemispherical recess.
A swash plate type compressor shoe which is interposed between a swash plate rotated by a rotating shaft inside a cylinder block and a piston which is slidably fitted inside a cylinder bore and which converts rotary movement of said swash plate to reciprocal movement of said piston, wherein said shoe has a hemispherical part and a flat bottom end face, said bottom end face is in slidable contact with an end face of said swash plate, and a surface of said hemispherical part is in slidable contact with a surface of said piston forming a hemispherical recess, wherein a top of said hemispherical part of said shoe does not contact the surface forming said hemispherical recess of said piston, thereby defining a clearance therebetween, a hole being formed in said top of said hemispherical part of said shoe, wherein said hole is a hole with a bottom.
A swash plate type compressor shoe which is interposed between a swash plate rotated by a rotating shaft inside a cylinder block and a piston which is slidably fitted inside a cylinder bore and which converts rotary movement of said swash plate to reciprocal movement of said piston, wherein said shoe has a hemispherical part and a flat bottom end face, said bottom end face is in slidable contact with an end face of said swash plate, and a surface of said hemispherical part is in slidable contact with a surface of said piston forming a hemispherical recess, wherein a top of said hemispherical part of said shoe does not contact the surface forming said hemispherical recess of said piston, thereby defining a clearance therebetween, a hole being formed in said top of said hemispherical part of said shoe, wherein said hole is charged with grease or with a filling material which is capable of absorbing a lubricant.
A swash plate type compressor shoe which is interposed between a swash plate rotated by a rotating shaft inside a cylinder block and a piston which is slidably fitted inside a cylinder bore and which converts rotary movement of said swash plate to reciprocal movement of said piston, wherein said shoe has a hemispherical part and a flat bottom end face, said bottom end face is in slidable contact with an end face of said swash plate, and a surface of said hemispherical part is in slidable contact with a surface of said piston forming a hemispherical recess, wherein a top of said hemispherical part of said shoe does not contact the surface forming said hemispherical recess of said piston, thereby defining a clearance therebetween, a hole being formed in said top of said hemispherical part of said shoe, wherein said hole is a through hole which opens to said bottom end face.
Dependencies are inferred from the claim text.