US20130202233A1 - Support member - Google Patents
Support member Download PDFInfo
- Publication number
- US20130202233A1 US20130202233A1 US13/830,424 US201313830424A US2013202233A1 US 20130202233 A1 US20130202233 A1 US 20130202233A1 US 201313830424 A US201313830424 A US 201313830424A US 2013202233 A1 US2013202233 A1 US 2013202233A1
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- United States
- Prior art keywords
- support member
- projections
- shaft
- attached
- split
- 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.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/20—Alloys based on aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/30—Material joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
Definitions
- the present invention relates to a support member which supports a rotary member directly or through a bearing.
- a support member which supports a rotary member for example the wear-preventing sleeve shown in Japanese Patent Publication (A) No. 10-131975 is known.
- This sleeve is attached by insert casting to a cast member provided with a support hole for supporting a rotary member and supports the rotary member in a sliding manner to prevent wear of the support hole.
- the sleeve is formed with several projecting parts at intervals in the outer circumferential surfaces so as to prevent it from being pulled out from the support hole of the cast member or prevent it from turning inside it (see FIG. 7 of Japanese Patent Publication (A) No. 10-131975)
- An object of the present invention is to provide a support member with excellent contact with the member to which the support member is attached.
- the present invention provides a metal support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes.
- the height of the projections is preferably 0.3 to 2.0 mm, while the number of the projections is preferably 5 to 100/cm 2 .
- the metal support member is preferably made of cast iron, cast steel, copper, copper alloy, aluminum, aluminum alloy, magnesium, or magnesium alloy.
- the metal support member is a tubular member or split member.
- the tubular member is comprised of an integrally formed member or a pair of divided split members.
- the metal support member is preferably produced by centrifugal casting.
- the metal support member is, for example, attached by being insert cast in a member made of aluminum, aluminum alloy, magnesium, or magnesium alloy. Alternatively, the metal support member is attached by integral molding in a member made of plastic or rubber.
- the present invention is not limited to the above metal support member and may also be a plastic support member. That is, the invention also provides a plastic support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of molding of the support member and wherein at least part of the projections have thin-waisted shapes.
- the height of the projections is preferably 0.3 to 2.0 mm, and the number of the projections is preferably 5 to 100/cm 2 .
- the plastic support member is a tubular member or split member.
- the tubular member is comprised of an integrally molded member or a pair of divided split members.
- the plastic support member is preferably made by injection molding.
- the plastic support member is for example attached by integral molding in a member made of a plastic or rubber.
- the contact with the member to which the support member is attached is improved and the member is prevented from being pulled out or turning. Further, it is possible to make the support member and the member to which the support member is attached thinner.
- FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a longitudinal cross-sectional view along a shaft showing a support member which is attached to an outside member and which directly supports a shaft and FIG. 1B is an enlarged cross-sectional view showing a joined part of the outside member and support member;
- FIG. 2 is a longitudinal cross-sectional view of the support member part of FIG. 1A cut perpendicular to the shaft;
- FIGS. 3A and 3B show another embodiment of the present invention, wherein FIG. 3A is a longitudinal cross-sectional view cut along the shaft showing a support member which is attached to an outside member and which directly supports a shaft and FIG. 3B is an enlarged cross-sectional view showing a joined part of the outside member and support member;
- FIG. 4 is a longitudinal cross-sectional view of the support member part of FIG. 3A cut perpendicular to the shaft;
- FIGS. 5A and 5B show still another embodiment of the present invention, wherein FIG. 5A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing and FIG. 5B is an enlarged cross-sectional view showing a joined part of an outside member and support member;
- FIG. 6 is a longitudinal cross-sectional view of the support member part of FIG. 5A cut perpendicular to the shaft;
- FIGS. 7A and 7B show still another embodiment of the present invention, wherein FIG. 7A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing and FIG. 7B is an enlarged cross-sectional view showing a joined part of an outside member and support member;
- FIG. 8 is a longitudinal cross-sectional view of the support member part of FIG. 7A cut perpendicular to the shaft;
- FIGS. 9A and 9B show still another embodiment of the present invention, wherein FIG. 9A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft directly and FIG. 9B is an enlarged cross-sectional view showing a joined part of an outside member and support member;
- FIG. 10 is a longitudinal cross-sectional view of the support member part of FIG. 9A cut perpendicular to the shaft;
- FIGS. 11A and 11B show still another embodiment of the present invention, wherein FIG. 11A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing and FIG. 11B is an enlarged cross-sectional view showing a joined part of an outside member and support member; and
- FIG. 12 is a longitudinal cross-sectional view of the support member part of FIG. 11A cut perpendicular to the shaft;
- FIGS. 1A and 1B and FIG. 2 show an example where a support member directly supports a shaft.
- a metal outside member 1 is formed with a support hole 2 .
- a metal support member comprised of a cylindrical tubular member 3 is attached.
- a shaft 4 is supported in a rotatable manner.
- the outside member 1 is made of aluminum, aluminum alloy, magnesium, or magnesium alloy.
- the tubular member 3 is attached to the support hole 2 of the outside member 1 by insert casting.
- the metal tubular member 3 is formed by cast iron, cast steel, copper, copper alloy, aluminum, aluminum alloy, magnesium, or magnesium alloy.
- a plurality of projections 6 are formed over the entire area. Among the projections 6 , part or all of the projections 6 are thin-waisted. The height of the projections 6 is 0.3 to 2.0 mm, while the number of the projections 6 is 5 to 100/cm 2 .
- the contact becomes insufficient, while if larger than 2.0 mm, the height of the projections 6 easily becomes uneven and the precision of the outside diameter falls. If the number of the projections 6 is less than 5/cm 2 , the contact becomes insufficient, while if larger than 100/cm 2 , the clearance between the projections 6 becomes smaller, so when the tubular member 3 is attached inside the metal outside member 1 by insert casting or is attached inside a plastic or rubber member by integral molding, the metal, plastic, or rubber will no longer sufficiently fill the clearances between the projections 6 and contact will easily become insufficient.
- the tubular member 3 is produced by centrifugal casting. Below, the method of production of the tubular member 3 will be explained.
- Diatomaceous earth, bentonite (binder), water, and a surfactant are mixed in a predetermined ratio to prepare a mold wash.
- the mold wash is spray coated on the inside surface of a casting mold (mold) which is heated to 200 to 400° C. and rotates whereby a mold wash layer is formed on the inside surface of the casting mold. Due to the action of the surfactant, a plurality of recessed holes are formed in the mold wash layer due to the bubbles of the gas produced from the inside of the mold wash layer.
- the mold wash layer is dried, then metal melt is cast into the rotating casting mold. At this time, the melt fills the recessed holes of the mold wash layer whereby a plurality of uniform projections are formed.
- the melt hardens to form the tubular member then the tubular member is taken out from the casting mold together with the mold wash layer. This is then blasted to remove the mold wash whereby a tubular member which has a plurality of projections, at least part of which projections have a thin-waisted shape, over its entire outer circumferential surface is produced.
- FIGS. 3A and 3B and FIG. 4 show another embodiment of the present invention.
- the present embodiment differs from the above embodiment in the point that the support hole of the support member and the end of the shaft are formed tapered.
- the support hole 7 which supports the shaft 4 of the tubular member 3 is formed tapered, while the end of the shaft 4 which is inserted into this support hole 7 is formed tapered.
- the rest of the configuration is the same as the above embodiment.
- FIGS. 5A and 5B and FIG. 6 show still another embodiment of the present invention.
- the present embodiment shows an example where the support member supports a shaft through a bearing. It differs from the first embodiment in the point that the shaft is supported by the support member through a bearing.
- a tubular member 3 is attached inside of the support hole 2 of the outside member 1 .
- the shaft 4 is supported rotatably in the support hole 7 of the tubular member 3 through a bearing 8 .
- the rest of the configuration is the same as the above embodiments.
- FIGS. 7A and 7B and FIG. 8 show still another embodiment of the present invention.
- the present embodiment differs from the embodiment shown in FIGS. 5A and 5B and FIG. 6 in the point that the tubular member 3 is split into two and is formed by a pair of split members 3 A, 3 B with semicircular cross-sections.
- the outside member 1 is a connecting rod
- the bearing 8 is white metal
- the shaft 4 is a crankshaft
- 9 indicates a piston.
- the outside member 1 , tubular member 3 , and bearing 8 are split into two.
- the outside member 1 is split into two at its big end part.
- split members 3 A, 3 B with semicircular cross-sections are fastened inside the recesses 2 A, 2 B with the semicircular cross-sections of the split parts 1 A, 1 B.
- split bearings 8 A, 8 B are fit into these, then the split parts 1 A, 1 B are fastened by fasteners 10 .
- a plurality of projections 6 the same as the tubular member 3 shown in the above embodiments are formed across the entire area. They are insert cast at the split parts 1 A, 1 B of the big end of the outside member 1 .
- FIGS. 9A and 9B and FIG. 10 show still another embodiment of the present invention.
- the present embodiment differs from the first embodiment in the point that the support member is a single split member with a semicircular cross-section.
- the outside member 1 is split into two. At the joining surface of one split part 1 B of the outside member 1 , a recess 2 B with a semicircular cross-section is formed. Inside this recess 2 B, a split member 3 B with a semicircular cross-section is insert cast. The outer circumferential surface 5 B of the split member 3 B has formed over its entire surface a plurality of projections 6 the same as the tubular member 3 shown in the above embodiments.
- the joining surface of the other split part 1 A is also formed with a recess 2 A with a semicircular cross-section.
- a shaft 4 is supported rotatably inside the support hole formed by this recess 2 A and split member 3 B.
- FIGS. 11A and 11B and FIG. 12 show still another embodiment of the present invention.
- the present embodiment differs from the embodiment shown in FIGS. 9A and 9B and FIG. 10 in the point that the support member supports the shaft through a bearing.
- the semicircular cross-section split member 3 B is insert cast. Further, at the split member 3 B, the split bearing 8 B is attached. In the recess 2 A of the joining surface of the other split member 1 A, the split bearing 8 A is attached.
- the shaft 4 is rotatably supported through the bearing 8 comprised of the pair of split bearings 8 A, 8 B.
- the material of the outside member is not limited to a metal and is sometimes also a plastic or rubber.
- the tubular member 3 or the split members 3 A, 3 B are for example attached to the outside member by injection molding.
- a plastic support member is for example produced by injection molding. That is, on the inner surface of the mold, a mold wash layer having a plurality of projection shaped recesses is formed. Plastic is injection molded into this mold. After the plastic hardens and the support member is formed, the support member is taken out from the mold together with the mold wash layer. This is then blasted to remove the mold wash whereby a plastic support member which has a plurality of projections, at least part of which projections have a thin-waisted shape, over its entire outer circumferential surface is produced.
- the plastic support member is, for example, attached in a plastic or rubber outside member by injection molding.
Abstract
A support member with excellent contact with the member to which the support member is attached, that is, a metal support member which supports a shaft directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes or a plastic support member which supports a shaft directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of molding of the support member and wherein at least part of the projections have thin-waisted shapes.
Description
- This application is a Divisional of Ser. No. 13/409,917, filed 1 Mar. 2012 which claims benefit of Serial No. 2011-046192, filed 3 Mar. 2011 in Japan and which applications are incorporated herein by reference. To the extent appropriate, a claim of priority is made to the above disclosed applications.
- 1. Field of the Invention
- The present invention relates to a support member which supports a rotary member directly or through a bearing.
- 2. Description of the Related Art
- As a support member which supports a rotary member, for example the wear-preventing sleeve shown in Japanese Patent Publication (A) No. 10-131975 is known. This sleeve is attached by insert casting to a cast member provided with a support hole for supporting a rotary member and supports the rotary member in a sliding manner to prevent wear of the support hole. The sleeve is formed with several projecting parts at intervals in the outer circumferential surfaces so as to prevent it from being pulled out from the support hole of the cast member or prevent it from turning inside it (see FIG. 7 of Japanese Patent Publication (A) No. 10-131975)
- As related art, see Japanese Patent Publication (A) No. 10-131975.
- However, with the wear-preventing sleeve shown in Japanese Patent Publication (A) No. 10-131975, sometimes contact with the cast member is insufficient.
- An object of the present invention is to provide a support member with excellent contact with the member to which the support member is attached.
- The present invention provides a metal support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes.
- The height of the projections is preferably 0.3 to 2.0 mm, while the number of the projections is preferably 5 to 100/cm2.
- The metal support member is preferably made of cast iron, cast steel, copper, copper alloy, aluminum, aluminum alloy, magnesium, or magnesium alloy.
- The metal support member is a tubular member or split member. The tubular member is comprised of an integrally formed member or a pair of divided split members.
- The metal support member is preferably produced by centrifugal casting.
- The metal support member is, for example, attached by being insert cast in a member made of aluminum, aluminum alloy, magnesium, or magnesium alloy. Alternatively, the metal support member is attached by integral molding in a member made of plastic or rubber.
- The present invention is not limited to the above metal support member and may also be a plastic support member. That is, the invention also provides a plastic support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein the plurality of the projections are formed at the outer circumferential surface as a whole at the time of molding of the support member and wherein at least part of the projections have thin-waisted shapes.
- The height of the projections is preferably 0.3 to 2.0 mm, and the number of the projections is preferably 5 to 100/cm2.
- The plastic support member is a tubular member or split member. The tubular member is comprised of an integrally molded member or a pair of divided split members.
- The plastic support member is preferably made by injection molding.
- The plastic support member is for example attached by integral molding in a member made of a plastic or rubber.
- According to the support member of the present invention, the contact with the member to which the support member is attached is improved and the member is prevented from being pulled out or turning. Further, it is possible to make the support member and the member to which the support member is attached thinner.
- These and other objects and features of the present invention will become clearer from the following description of the preferred embodiments given with reference to the attached drawings, wherein:
-
FIGS. 1A and 1B show an embodiment of the present invention, whereinFIG. 1A is a longitudinal cross-sectional view along a shaft showing a support member which is attached to an outside member and which directly supports a shaft andFIG. 1B is an enlarged cross-sectional view showing a joined part of the outside member and support member; -
FIG. 2 is a longitudinal cross-sectional view of the support member part ofFIG. 1A cut perpendicular to the shaft; -
FIGS. 3A and 3B show another embodiment of the present invention, whereinFIG. 3A is a longitudinal cross-sectional view cut along the shaft showing a support member which is attached to an outside member and which directly supports a shaft andFIG. 3B is an enlarged cross-sectional view showing a joined part of the outside member and support member; -
FIG. 4 is a longitudinal cross-sectional view of the support member part ofFIG. 3A cut perpendicular to the shaft; -
FIGS. 5A and 5B show still another embodiment of the present invention, whereinFIG. 5A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing andFIG. 5B is an enlarged cross-sectional view showing a joined part of an outside member and support member; -
FIG. 6 is a longitudinal cross-sectional view of the support member part ofFIG. 5A cut perpendicular to the shaft; -
FIGS. 7A and 7B show still another embodiment of the present invention, whereinFIG. 7A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing andFIG. 7B is an enlarged cross-sectional view showing a joined part of an outside member and support member; -
FIG. 8 is a longitudinal cross-sectional view of the support member part ofFIG. 7A cut perpendicular to the shaft; -
FIGS. 9A and 9B show still another embodiment of the present invention, whereinFIG. 9A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft directly andFIG. 9B is an enlarged cross-sectional view showing a joined part of an outside member and support member; -
FIG. 10 is a longitudinal cross-sectional view of the support member part ofFIG. 9A cut perpendicular to the shaft; -
FIGS. 11A and 11B show still another embodiment of the present invention, whereinFIG. 11A is a longitudinal cross-sectional view cut along a shaft showing a support member which is attached to an outside member and supports a shaft through a bearing andFIG. 11B is an enlarged cross-sectional view showing a joined part of an outside member and support member; and -
FIG. 12 is a longitudinal cross-sectional view of the support member part ofFIG. 11A cut perpendicular to the shaft; - Below, preferred embodiments of the present invention will be explained while referring to the figures.
-
FIGS. 1A and 1B andFIG. 2 show an example where a support member directly supports a shaft. A metal outsidemember 1 is formed with asupport hole 2. Inside thissupport hole 2, a metal support member comprised of a cylindricaltubular member 3 is attached. Inside thetubular member 3, ashaft 4 is supported in a rotatable manner. - The
outside member 1 is made of aluminum, aluminum alloy, magnesium, or magnesium alloy. Thetubular member 3 is attached to thesupport hole 2 of theoutside member 1 by insert casting. Themetal tubular member 3 is formed by cast iron, cast steel, copper, copper alloy, aluminum, aluminum alloy, magnesium, or magnesium alloy. - At the outer
circumferential surface 5 of thetubular member 3, a plurality ofprojections 6 are formed over the entire area. Among theprojections 6, part or all of theprojections 6 are thin-waisted. The height of theprojections 6 is 0.3 to 2.0 mm, while the number of theprojections 6 is 5 to 100/cm2. - If the height of the
projections 6 is less than 0.3 mm, the contact becomes insufficient, while if larger than 2.0 mm, the height of theprojections 6 easily becomes uneven and the precision of the outside diameter falls. If the number of theprojections 6 is less than 5/cm2, the contact becomes insufficient, while if larger than 100/cm2, the clearance between theprojections 6 becomes smaller, so when thetubular member 3 is attached inside the metal outsidemember 1 by insert casting or is attached inside a plastic or rubber member by integral molding, the metal, plastic, or rubber will no longer sufficiently fill the clearances between theprojections 6 and contact will easily become insufficient. - The
tubular member 3 is produced by centrifugal casting. Below, the method of production of thetubular member 3 will be explained. - Diatomaceous earth, bentonite (binder), water, and a surfactant are mixed in a predetermined ratio to prepare a mold wash. The mold wash is spray coated on the inside surface of a casting mold (mold) which is heated to 200 to 400° C. and rotates whereby a mold wash layer is formed on the inside surface of the casting mold. Due to the action of the surfactant, a plurality of recessed holes are formed in the mold wash layer due to the bubbles of the gas produced from the inside of the mold wash layer. The mold wash layer is dried, then metal melt is cast into the rotating casting mold. At this time, the melt fills the recessed holes of the mold wash layer whereby a plurality of uniform projections are formed. The melt hardens to form the tubular member, then the tubular member is taken out from the casting mold together with the mold wash layer. This is then blasted to remove the mold wash whereby a tubular member which has a plurality of projections, at least part of which projections have a thin-waisted shape, over its entire outer circumferential surface is produced.
-
FIGS. 3A and 3B andFIG. 4 show another embodiment of the present invention. The present embodiment differs from the above embodiment in the point that the support hole of the support member and the end of the shaft are formed tapered. - That is, in the present embodiment, the
support hole 7 which supports theshaft 4 of thetubular member 3 is formed tapered, while the end of theshaft 4 which is inserted into thissupport hole 7 is formed tapered. The rest of the configuration is the same as the above embodiment. -
FIGS. 5A and 5B andFIG. 6 show still another embodiment of the present invention. The present embodiment shows an example where the support member supports a shaft through a bearing. It differs from the first embodiment in the point that the shaft is supported by the support member through a bearing. - That is, in the present embodiment, inside of the
support hole 2 of theoutside member 1, atubular member 3 is attached. Theshaft 4 is supported rotatably in thesupport hole 7 of thetubular member 3 through abearing 8. The rest of the configuration is the same as the above embodiments. -
FIGS. 7A and 7B andFIG. 8 show still another embodiment of the present invention. The present embodiment differs from the embodiment shown inFIGS. 5A and 5B andFIG. 6 in the point that thetubular member 3 is split into two and is formed by a pair ofsplit members outside member 1 is a connecting rod, thebearing 8 is white metal, theshaft 4 is a crankshaft, and 9 indicates a piston. - In the present embodiment, the
outside member 1,tubular member 3, andbearing 8 are split into two. Theoutside member 1 is split into two at its big end part. Inside therecesses split parts members split bearings split parts fasteners 10. At the outercircumferential surfaces members projections 6 the same as thetubular member 3 shown in the above embodiments are formed across the entire area. They are insert cast at thesplit parts outside member 1. -
FIGS. 9A and 9B andFIG. 10 show still another embodiment of the present invention. The present embodiment differs from the first embodiment in the point that the support member is a single split member with a semicircular cross-section. - In the present embodiment, the
outside member 1 is split into two. At the joining surface of one splitpart 1B of theoutside member 1, arecess 2B with a semicircular cross-section is formed. Inside thisrecess 2B, asplit member 3B with a semicircular cross-section is insert cast. The outercircumferential surface 5B of thesplit member 3B has formed over its entire surface a plurality ofprojections 6 the same as thetubular member 3 shown in the above embodiments. The joining surface of theother split part 1A is also formed with arecess 2A with a semicircular cross-section. Ashaft 4 is supported rotatably inside the support hole formed by thisrecess 2A and splitmember 3B. -
FIGS. 11A and 11B andFIG. 12 show still another embodiment of the present invention. The present embodiment differs from the embodiment shown inFIGS. 9A and 9B andFIG. 10 in the point that the support member supports the shaft through a bearing. - That is, in the present embodiment, in the
recess 2B of the joining surface of one splitpart 1B of theoutside member 1, the semicircular cross-section splitmember 3B is insert cast. Further, at thesplit member 3B, the split bearing 8B is attached. In therecess 2A of the joining surface of theother split member 1A, the split bearing 8A is attached. Theshaft 4 is rotatably supported through thebearing 8 comprised of the pair ofsplit bearings - The material of the outside member is not limited to a metal and is sometimes also a plastic or rubber. At this time, the
tubular member 3 or thesplit members - In the above embodiments, a metal support member was shown, but a plastic support member is also possible. The plastic support member is configured the same as the metal support member shown in the above embodiments. A plastic support member is for example produced by injection molding. That is, on the inner surface of the mold, a mold wash layer having a plurality of projection shaped recesses is formed. Plastic is injection molded into this mold. After the plastic hardens and the support member is formed, the support member is taken out from the mold together with the mold wash layer. This is then blasted to remove the mold wash whereby a plastic support member which has a plurality of projections, at least part of which projections have a thin-waisted shape, over its entire outer circumferential surface is produced. The plastic support member is, for example, attached in a plastic or rubber outside member by injection molding.
- While the invention has been described with reference to specific embodiments chosen for purpose of illustration, it should be apparent that numerous modifications could be made thereto by those skilled in the art without departing from the basic concept and scope of the invention.
Claims (5)
1. A metal support member which supports a rotary member directly or through a bearing and which has a plurality of the projections at its outer circumferential surface, wherein said plurality of the projections are formed at the outer circumferential surface as a whole at the time of casting of the support member and wherein at least part of the projections have thin-waisted shapes and the height of the projections is 0.3 to 2.0 mm, while the number of the projections is 5 to 100/cm2.
2. A metal support member as set forth in claim 1 , wherein said support member is made of cast iron, cast steel, copper, copper alloy, aluminum alloy, or magnesium alloy.
3. A metal support member as set forth in claim 1 , which is produced by centrifugal casting.
4. A metal support member as set forth in claim 1 , wherein said metal support member is attached by being cast in a member made of aluminum alloy, or magnesium alloy.
5. A metal support member as set forth in claim 1 , which is attached by integral molding in a member made of plastic or rubber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/830,424 US20130202233A1 (en) | 2011-03-03 | 2013-03-14 | Support member |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2011-046192 | 2011-03-03 | ||
JP2011046192A JP5579106B2 (en) | 2011-03-03 | 2011-03-03 | Support member |
US13/409,917 US8801291B2 (en) | 2011-03-03 | 2012-03-01 | Support member |
US13/830,424 US20130202233A1 (en) | 2011-03-03 | 2013-03-14 | Support member |
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US13/409,917 Division US8801291B2 (en) | 2011-03-03 | 2012-03-01 | Support member |
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US20130202233A1 true US20130202233A1 (en) | 2013-08-08 |
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US13/409,917 Active US8801291B2 (en) | 2011-03-03 | 2012-03-01 | Support member |
US13/830,424 Abandoned US20130202233A1 (en) | 2011-03-03 | 2013-03-14 | Support member |
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US13/409,917 Active US8801291B2 (en) | 2011-03-03 | 2012-03-01 | Support member |
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US (2) | US8801291B2 (en) |
EP (2) | EP2495464B1 (en) |
JP (1) | JP5579106B2 (en) |
KR (2) | KR101638992B1 (en) |
CN (2) | CN102678762A (en) |
BR (1) | BR102012004820A2 (en) |
IN (1) | IN2012DE00574A (en) |
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US20130313949A1 (en) * | 2012-05-28 | 2013-11-28 | Denso Corporation | Rotary actuator |
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CN103742548B (en) * | 2013-12-31 | 2016-07-06 | 江苏南铸科技股份有限公司 | A kind of guide shaft support |
DE102014108879A1 (en) * | 2014-06-25 | 2016-01-14 | Thyssenkrupp Presta Teccenter Ag | Hybrid bearing block for a camshaft |
CN104964128A (en) * | 2015-07-03 | 2015-10-07 | 南京禄口汽车配件厂 | Copper inlay thread supporting base |
US10208794B2 (en) * | 2015-08-10 | 2019-02-19 | Dalian Sanhuan Composite Material Technology Development Co., Ltd. | Water lubricated composite thrust bearing of nuclear main pump |
CN105221583A (en) * | 2015-10-10 | 2016-01-06 | 宁波恒力汽配轴承有限公司 | A kind of adjustable type opening bearing block assembly |
CN105351370A (en) * | 2015-10-10 | 2016-02-24 | 宁波恒力汽配轴承有限公司 | Supporting seat with bearing |
CN109746420B (en) * | 2019-03-15 | 2024-02-02 | 河北欧瑞特铝合金有限公司 | Steel sleeve inlaid in aluminum alloy part and process for inlaid casting steel sleeve in aluminum alloy part |
MX2022005331A (en) * | 2019-11-08 | 2022-05-26 | Saint Gobain Performance Plastics Corp | Split bearing, assembly, and method of making and using the same. |
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-
2012
- 2012-02-10 EP EP12154834.1A patent/EP2495464B1/en active Active
- 2012-02-10 EP EP13151660.1A patent/EP2584211A1/en not_active Withdrawn
- 2012-02-29 KR KR1020120021012A patent/KR101638992B1/en active IP Right Grant
- 2012-03-01 US US13/409,917 patent/US8801291B2/en active Active
- 2012-03-01 IN IN574DE2012 patent/IN2012DE00574A/en unknown
- 2012-03-02 CN CN2012100525566A patent/CN102678762A/en active Pending
- 2012-03-02 BR BRBR102012004820-5A patent/BR102012004820A2/en not_active Application Discontinuation
- 2012-03-02 CN CN2013100101402A patent/CN103062229A/en active Pending
-
2013
- 2013-01-14 KR KR1020130003925A patent/KR20130012145A/en not_active Application Discontinuation
- 2013-03-14 US US13/830,424 patent/US20130202233A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20130313949A1 (en) * | 2012-05-28 | 2013-11-28 | Denso Corporation | Rotary actuator |
Also Published As
Publication number | Publication date |
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JP2012184778A (en) | 2012-09-27 |
JP5579106B2 (en) | 2014-08-27 |
KR20130012145A (en) | 2013-02-01 |
EP2584211A1 (en) | 2013-04-24 |
EP2495464A1 (en) | 2012-09-05 |
BR102012004820A2 (en) | 2013-07-23 |
US8801291B2 (en) | 2014-08-12 |
IN2012DE00574A (en) | 2015-08-21 |
CN102678762A (en) | 2012-09-19 |
US20120224798A1 (en) | 2012-09-06 |
CN103062229A (en) | 2013-04-24 |
EP2495464B1 (en) | 2016-07-27 |
KR101638992B1 (en) | 2016-07-12 |
KR20120100772A (en) | 2012-09-12 |
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