WO2014024327A1 - ラジアルころ軸受用保持器 - Google Patents
ラジアルころ軸受用保持器 Download PDFInfo
- Publication number
- WO2014024327A1 WO2014024327A1 PCT/JP2012/076737 JP2012076737W WO2014024327A1 WO 2014024327 A1 WO2014024327 A1 WO 2014024327A1 JP 2012076737 W JP2012076737 W JP 2012076737W WO 2014024327 A1 WO2014024327 A1 WO 2014024327A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- engagement piece
- axial
- radial
- axial direction
- portions
- Prior art date
Links
Images
Classifications
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4694—Single-split roller or needle cages
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/463—Needle bearings with one row or needles consisting of needle rollers held in a cage, i.e. subunit without race rings
-
- 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
- F16C2226/50—Positive connections
- F16C2226/70—Positive connections with complementary interlocking parts
-
- 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
- F16C2226/50—Positive connections
- F16C2226/70—Positive connections with complementary interlocking parts
- F16C2226/76—Positive connections with complementary interlocking parts with tongue and groove or key and slot
Definitions
- This invention relates to a radial roller bearing retainer made of synthetic resin and having a discontinuous portion at one place in the circumferential direction.
- a radial roller bearing 1 as shown in FIG. 23 is incorporated in a portion to which a large radial load is applied among the rotation support portions of various mechanical devices.
- the radial roller bearing 1 includes a cylindrical outer ring raceway 3 provided on the inner peripheral surface of the outer diameter side member 2 and a cylindrical inner ring raceway 5 provided on the outer peripheral surface of the shaft 4 existing on the inner diameter side.
- a plurality of rollers 6 are provided so as to be able to roll while being held by a cage 7.
- the combination of the outer diameter side member 2 and the shaft 4 includes a combination of a housing and a rotation shaft that does not rotate even when used, a combination of a gear or roller that rotates when used, and a support shaft.
- the radial roller bearing includes a radial needle bearing using a needle.
- the cage 7 is entirely made of a synthetic resin material in a cylindrical shape.
- the cage 7 is arranged concentrically with a space in the axial direction, and a pair of rim portions 8 each having an annular shape, and intermittently between the rim portions 8 in the circumferential direction.
- a plurality of column portions 9 provided in a state of being spanned.
- limb part 8 which adjoin the circumferential direction is made into the pocket 10 for hold
- Such a retainer 7 holds the rollers 6 in the respective pockets 10 so that the rollers 6 can roll freely, between the outer peripheral surface of the outer diameter side member 2 and the outer peripheral surface of the shaft 4.
- a relative rotation with respect to the member 2 and the shaft 4 is provided freely.
- the cage 7 rotates with respect to the outer diameter side member 2 and the shaft 4 along with the revolving motion of the rollers 6.
- the cage 7 When assembling the radial roller bearing 1, in order to place the cage 7 around the inner ring raceway 5, the cage 7 is inserted from the end of the shaft 4 and moved axially to the circumference of the inner ring raceway 5.
- an outward flange shape whose outer diameter dimension is larger than the inner diameter dimension of the cage 7 at the axial intermediate portion between the end portion of the shaft 4 and the inner ring raceway 5. If there is an obstacle such as a buttocks, the obstacle becomes an obstacle, and the cage 7 cannot be moved to the periphery of the inner ring raceway 5.
- FIG. 25 shows a cage 7a described in British Patent No. 1352909.
- the cage 7a is made of synthetic resin and has a discontinuous portion 11 at one place in the circumferential direction. Further, the end portions 12 a and 12 b provided across the discontinuous portion 11 are engaged by the engaging portion 13 by the concave-convex engagement.
- Each of the end portions 12a and 12b is formed with a pair of outer diameter side engaging pieces 14a and 14b and inner diameter side engaging pieces 15a and 15b, which respectively constitute the engaging portion 13.
- the outer diameter side engagement piece 14a is disposed in the axial half of the outer diameter side half
- the inner diameter engagement piece is disposed in the other axial half of the inner diameter side half.
- 15a is formed.
- the outer diameter side engaging piece 14b is disposed in the other half portion in the axial direction of the outer diameter side half portion
- the inner diameter side engaging piece 15b is disposed in the axial direction half portion of the inner diameter side half portion.
- the pair of outer-diameter side engaging pieces 14a and 14b and the pair of inner-diameter side engaging pieces 15a and 15b are axially arranged in the outer diameter side half and the inner diameter side half of the engaging portion 13, respectively. And the outer diameter side engaging pieces 14a and 14b and the inner diameter side engaging pieces 15b and 15a in the axial direction half of the engaging portion 13 and the other axial half of the engaging portion 13 respectively in the radial direction.
- the end portions 12a and 12b are not engaged with each other.
- the width of the discontinuous portion 11 is narrowed in a state where the cage 7a is incorporated in the radial roller bearing, and the end portion 12a. 12b are engaged with each other.
- Recesses 16a and 16b are formed on the peripheral surfaces of the pair of rim portions 8a and 8b, respectively. Specifically, in the outer peripheral surface of one rim portion 8a, a concave portion 16a that is recessed inward in the radial direction is formed in a portion that is aligned axially with each pocket 10, and the other rim portion 8b. A recess 16b that is recessed outward in the radial direction is formed in a portion of the inner peripheral surface that is aligned with each pocket 10 in the axial direction.
- Such a cage 7a is formed by injecting synthetic resin into the cavity of an axial draw mold (mold) constituted by a pair of split molds (mold elements), and then each of these split molds in the axial direction. It is formed by so-called axial draw molding.
- the cage is composed of a pair of mold elements that move in the axial direction and a plurality of mold elements that move in the radial direction, compared to a case where a radial draw type that makes the mold configuration complicated is used. The manufacturing cost of 7a is kept low.
- the axial draw molding is performed by moving a pair of split molds in the axial direction, when taking out the split mold, the retaining part for preventing the rollers provided at the opening edge of the pocket from falling off, It is not necessary to cause damage such as plastic deformation and whitening. For this reason, the axial draw molding has a large volume of the retaining portion, and it is difficult to perform so-called unreasonable punching operation, in which the retaining portion is elastically expanded to take out the mold element to the outer diameter side, or the column portion is It is preferably employed when it is difficult to take out the mold element radially outward by being disposed in the radially outer portion than the pitch circle diameter of the rollers.
- the width of the discontinuous portion 11 can be expanded in the circumferential direction based on elastic deformation of the cage 7a.
- shaft 4 is allowed to pass through the discontinuous part 11 (between edge part 12a, 12b) by expanding the width
- the cage 7a can be assembled around the shaft 4.
- the cage 7a is elastically expanded to such an extent that it can get over the obstacle. 7a can be assembled by moving it around the shaft 4 in the axial direction.
- the end portions 12a and 12b provided across the discontinuous portion 11 are not only relatively displaced in the axial direction but also in the radial direction by the engaging portion 13. Displacement is also impossible. For this reason, when the radial roller bearing is operated, the cage 7a is prevented from being expanded by the action of centrifugal force. In this case, since the outer diameter side engaging pieces 14a and 14b and the inner diameter side engaging pieces 15b and 15a constituting the engaging portion 13 are pressed in the radial direction, the outer diameter side engaging pieces 14a and 14a, 14b and the inner diameter side engagement pieces 15b and 15a are all likely to wear, and may be broken in the worst case.
- the structure in which the end portions provided across the discontinuous portion can be engaged with each other so as to allow relative displacement in the radial direction is compared according to the radial draw molding performed using the mold element moving in the radial direction. Can be easily obtained.
- the radial draw molding has a problem that the manufacturing cost increases because the number of mold parts used for injection molding increases.
- JP-A-2-89814 and Japanese Utility Model Laid-Open No. 54-111242 show examples of improvements in the structure of the engaging portion. In these cases, the specification of British Patent No. 1352909 is also disclosed. Problems similar to those described in the document may occur. These documents are hereby incorporated by reference.
- the present invention can be manufactured by axial draw molding, and the end portions provided across the discontinuous portion can be relatively displaced in the radial direction, and the axial direction. It is an object of the present invention to realize a structure of a radial roller bearing retainer that can be engaged with a relative displacement in an impossible manner.
- the radial roller bearing retainer of the present invention is integrally manufactured by synthetic resin injection molding (axial draw molding) using an axial draw mold constituted by a pair of split molds, and a pair of rim parts and a plurality of rim parts A book column, a plurality of pockets, and an engaging portion are provided, and a discontinuous portion is provided at one place in the circumferential direction.
- the pair of rim portions of each of these is a non-circular shape, and are provided concentrically with each other at intervals in the axial direction. Further, in the peripheral surfaces of these rim portions, concave portions that are recessed in the radial direction are formed in portions that are aligned with the respective pockets in the axial direction. The formation positions of these recesses are opposite in the radial direction on both axial sides of the pockets. Moreover, the said engaging part engages the edge parts provided on both sides of the said discontinuous part.
- the engaging portion is divided into an inner engaging piece provided at one end portion of the end portions and a pair of outer portions provided at the other end portion. It is comprised by the engagement piece.
- the inner engagement piece is provided in the axially intermediate portion of the one end portion so as to extend in the circumferential direction toward the other end portion.
- the pair of outer engagement pieces are provided on both side portions spaced apart in the axial direction of the other end portion so as to extend in the circumferential direction toward the one end portion, respectively. They do not overlap with each other in the axial direction. That is, these outer engagement pieces are displaced from each other in the radial position.
- the inner engagement piece is arranged in a portion between the outer engagement pieces (intermediate portion in the axial direction). Accordingly, the inner engagement piece and the outer engagement piece are engaged with each other in the axial direction without overlapping the inner engagement piece and the outer engagement piece in the radial direction. .
- the boundary surface in the axial direction of the inner engagement piece with the thinned portion may be a tapered surface.
- a pair of inner engagements in which the inner engagement piece is separated in the axial direction by causing the pair of lacking parts to continue in the radial direction can also consist of pieces.
- the axial end portions of the pair of outer engaging pieces constituting the engaging portion are offset from the axial side surface (outer surface) of the rim portion toward the axial center. You can also. In this case, insertion spaces are formed at both side portions of the engaging portion.
- the outer engagement piece may be composed of a plurality (two or more) of outer engagement thin plates that are separated in the radial direction.
- the radial bearing retainer of the present invention includes a pair of rim portions, a plurality of pillar portions, a plurality of pockets, a discontinuous portion provided at one circumferential direction, Engaging portions that engage end portions provided across the continuous portion, and the engaging portions are separated at two locations in the axial direction of one of the end portions, respectively.
- the respective radial widths are smaller than the radial width of the ends, and are mutually in relation to the axial direction.
- the at least one pair of outer engagement pieces that do not overlap each other and the axial end portion of the outer engagement piece at the other end of the ends are arranged in the radial direction. It is characterized by comprising at least one inner engagement piece that engages with the outer engagement piece.
- the present invention can be manufactured by axial draw molding, and at the time of use, the end portions provided across the discontinuous portions can be relatively displaced in the radial direction and can be relatively displaced in the axial direction.
- a structure of a radial roller bearing cage that can be engaged with each other is realized.
- the engagement portion that engages the end portions provided with the discontinuous portion interposed therebetween is divided into the inner engagement piece provided at one end portion and the other. And a pair of outer engagement pieces provided at the end of the inner engagement piece, the inner engagement piece being disposed between the outer engagement pieces, and the inner engagement piece. And these outer engagement pieces are engaged only in the axial direction without overlapping each other in the radial direction. For this reason, the said engaging part can engage the said end parts with the relative displacement regarding a radial direction, and the relative displacement regarding an axial direction cannot be engaged.
- the inner engagement piece and the outer engagement piece constituting the engagement portion do not have to be pressed in the radial direction during operation. It is possible to increase the diameter of the radial bearing retainer by the action of centrifugal force. Further, since the force required to relatively displace the end portions in the circumferential direction is small, the discontinuous portion can be expanded and contracted smoothly. As a result, fretting wear can be effectively prevented when incorporated in a radial roller bearing incorporated in a manual transmission or the like.
- the radial roller bearing retainer according to the present invention is provided to form a space in which the inner engagement pieces are arranged in the split mold, with the pair of outer engagement pieces not overlapping each other in the axial direction.
- concave portions are formed in the respective rim portions, so that portions of the split mold provided to form pockets are pulled out in the axial direction.
- the radial roller bearing retainer of the present invention is restricted to a shape in which a pair of split dies can be separated in the axial direction without damaging the retainer after injection molding. Can be manufactured.
- the volume of the inner engagement piece can be reduced. For this reason, it is possible to prevent deformation such as sink marks and warpage from occurring on the inner engagement piece after injection molding, and to improve dimensional accuracy (shape accuracy). Further, the weight of the radial roller bearing retainer can be reduced and the material cost can be reduced.
- the boundary surface in the axial direction of the inner engagement piece with the thinned portion is a tapered surface, the volume of the inner engagement piece can be reduced while ensuring the strength and rigidity of the inner engagement piece.
- the inner engagement piece is composed of a pair of inner engagement pieces separated in the axial direction, the volume of the inner engagement piece can be greatly reduced. For this reason, weight reduction and material cost reduction of the radial roller bearing cage can be realized at a higher level.
- the outer engagement piece is composed of a plurality of outer engagement thin plates separated in the radial direction, a large dimension in the radial direction from the radially outer surface to the radially inner surface of the entire outer engagement piece can be secured. For this reason, it becomes difficult for the inner engagement piece to ride on the outer engagement piece. Therefore, relative displacement in the axial direction between the end portions provided across the discontinuous portion can be more effectively prevented.
- FIG. 1 is a perspective view showing a first example of a cage according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing the cage of the first example as seen from another angle (downward in FIG. 1).
- FIG. 3 is a perspective view showing one end portion of the retainer of the first example and the vicinity thereof.
- FIG. 4 is a perspective view showing the other end of the cage of the first example and the vicinity thereof.
- FIG. 5 is a perspective view showing the cage of the second example of the embodiment of the present invention as seen from the opposite side with respect to FIG. 1 in the axial direction.
- FIG. 6 is a perspective view showing the cage of the second example as seen from another angle (downward in FIG. 5).
- FIG. 7 is a perspective view showing one end portion and its vicinity of the cage of the third example of the embodiment of the present invention.
- FIG. 8 is a perspective view showing one end portion and its vicinity of a cage of the fourth example of the embodiment of the present invention.
- FIG. 9 is a perspective view showing one end portion and its vicinity of the cage of the fifth example of the embodiment of the present invention.
- FIG. 10 is a perspective view showing one end portion and its vicinity of a retainer of a sixth example of an embodiment of the present invention.
- FIG. 11 is a perspective view showing one end portion and its vicinity of a retainer of a seventh example of an embodiment of the present invention.
- FIG. 12 is a perspective view showing one end portion and its vicinity of the cage of the eighth example of the embodiment of the present invention.
- FIG. 13 is a perspective view which shows the one edge part and its vicinity of the holder
- FIG. 14 is a perspective view showing one end portion and its vicinity of a cage of a tenth example of an embodiment of the present invention.
- FIG. 15 is a perspective view showing the retainer of the eleventh example according to the embodiment of the present invention as viewed from the opposite side with respect to FIG. 1 in the axial direction.
- FIG. 16 is a perspective view showing the retainer of the eleventh example as seen from another angle (downward in FIG. 15).
- FIG. 17 is a perspective view showing a cage of a twelfth example of the embodiment of the present invention.
- FIG. 18 is a perspective view showing the cage of the twelfth example as viewed from the side opposite to the axial direction of FIG.
- FIG. 19 is a perspective view showing the other end of the twelfth example cage and the vicinity thereof.
- FIG. 20 is a perspective view showing a retainer of a thirteenth example of the embodiment of the present invention.
- 21 is a perspective view showing the cage of the thirteenth example as viewed from the opposite side with respect to FIG. 20 in the axial direction.
- FIG. 22 is a perspective view showing the other end of the cage of the thirteenth example and the vicinity thereof.
- FIG. 23 is a cross-sectional view of a rotation support unit incorporating a radial roller bearing provided with a cage.
- FIG. 24 is a view of a part of the cage in the circumferential direction as viewed from the outside in the radial direction.
- FIG. 25 is a perspective view of a conventional radial roller bearing retainer.
- the radial roller (needle) bearing retainer 7b of the present example includes a pair of rim portions 8c and 8d that are arranged concentrically at intervals in the axial direction, each having a ring shape, and a circumferential direction. And a plurality of column portions 9 provided in a state of being spanned between the rim portions 8c and 8d intermittently. Each of the portions surrounded on the four sides by the column portion 9 and the rim portions 8c and 8d adjacent to each other in the circumferential direction serves as a pocket 10 for holding the roller 6 (see FIG. 23) in a rollable manner.
- a portion that is axially aligned with the pocket 10 is provided with a concave portion 16c that is recessed radially inward and a concave portion 16d that is recessed radially outward. These are formed alternately in the circumferential direction and alternately between the rim portions 8c and 8d. That is, the recessed part 16c and the recessed part 16d with which the formation position regarding a radial direction are opposite are arrange
- the width dimension in the circumferential direction of the recesses 16c and 16d is the same as the width dimension in the circumferential direction of the pocket 10, and the depth dimension in the radial direction is the thickness of the rim portions 8c and 8d in the radial direction. 1/2 the size.
- Such recesses 16c and 16d are provided in order to form the pocket 10 among these split molds when the pair of split molds constituting the axial draw mold is moved in the axial direction during manufacture. Pass the part in the axial direction.
- the retainer 7b is provided with a discontinuous portion 11a at one place in the circumferential direction.
- the end portions 12c and 12d (column portions 9) provided on both sides of the discontinuous portion 11a are engaged with each other by the engaging portion 13a.
- an inner engagement piece extending in the circumferential direction toward the other end 12d at the axially intermediate portion (center portion) of one end 12c of the ends 12c and 12d. 17 is formed.
- a pair of outer engagement pieces 18a and 18b extending in the circumferential direction toward one end 12c are formed on both side portions of the other end 12d that are separated in the axial direction. Yes.
- the inner engagement piece 17 and the outer engagement pieces 18a and 18b are both substantially rectangular plate shapes (partial cylindrical shapes). Further, the axial dimension of the inner engagement piece 17 and the axial dimension of each of the outer engagement pieces 18a and 18b are the same. That is, the axial dimension of the inner engagement piece 17 and the outer engagement pieces 18a and 18b is 1/3 of the axial dimension (full width) of the end portions 12a and 12b. Further, the radial dimension of the inner engagement piece 17 is matched with the radial dimension of the one end 12c, and the radial dimension of the outer engagement pieces 18a and 18b is the radial dimension of the other end 12d. About 1/2 (at least 1/2 or less). Then, as shown in FIG.
- one outer engagement piece 18a is placed on one axial end of the outer diameter side half of the other end 12d, and the other outer engagement piece 18b is placed on the other end 12d.
- the other outer engagement piece 18b is placed on the other end 12d.
- the illustrated structure shows a structure in which both side surfaces in the radial direction of the outer engagement pieces 18a and 18b are parallel to each other.
- the outer engagement piece 18a provided on the outer diameter side half of the end portion 12d is shown.
- the radially inner side surface and the radially outer surface of the outer engagement piece 18b provided on the inner diameter side half of the end portion 12d are axial end portions (the rim portion 8a, It is also possible to adopt a structure in which a taper surface is provided by inclining in the direction in which the radial dimension of the outer engagement pieces 18a, 18b is reduced toward the 8b) side. By adopting such a configuration, it is possible to easily pull out the pair of split dies in the axial direction during manufacturing.
- the inner engagement piece 17 is placed between the outer engagement pieces 18a and 18b. Place in the middle part. Accordingly, the inner engagement piece 17 and the outer engagement pieces 18a and 18b are not overlapped with each other in the radial direction, and the inner engagement piece 17 and the outer engagement pieces 18a and 18b are respectively engaged in the axial direction. Can be combined. Specifically, both side surfaces in the axial direction of the inner engagement piece 17, the other axial side surface of the outer engagement piece 18a (left side surface in FIG. 4), and one axial side surface of the outer engagement piece 18b (right side in FIG. 4). Side surfaces) are brought into contact or close to each other.
- the cage 7b of the present example having the above-described configuration can be manufactured by axial draw molding, and in use, the end portions 12c and 12d provided with the discontinuous portion 11a interposed therebetween have a diameter.
- the relative displacement in the direction can be made possible, and the relative displacement in the axial direction can be made impossible.
- the engaging portion 13a includes an inner engaging piece 17 provided at one end portion 12c and a pair of outer engaging pieces 18a and 18b provided at the other end portion 12d.
- the inner engagement piece 17 is disposed between the outer engagement pieces 18a and 18b, so that the inner engagement piece 17 and the outer engagement pieces 18a and 18b overlap each other in the radial direction. Instead, they are engaged only in the axial direction. For this reason, the engaging portion 13a engages the end portions 12c and 12d with each other so that the relative displacement in the radial direction is possible and the relative displacement in the axial direction is impossible.
- the inner engagement piece 17 and the outer engagement pieces 18a and 18b constituting the engagement portion 13a do not have to be pressed in the radial direction during operation. It is not necessary to cause damage such as wear, and the diameter of the cage 7b can be increased by the action of centrifugal force. Further, since the force required to relatively displace the end portions 12c and 12d in the circumferential direction is small, the discontinuous portion 11a can be expanded and contracted smoothly. As a result, fretting wear can be effectively prevented when incorporated in a radial roller bearing incorporated in a manual transmission or the like.
- the retainer 7b of this example is configured so that the outer engagement pieces 18a and 18b do not overlap each other in the axial direction, that is, the formation positions in the radial direction are shifted from each other, so that an axial draw type is configured.
- a portion provided to form a space (a portion between the outer engagement pieces 18a and 18b) in which the inner engagement piece 17 is arranged can be used as a shaft without interfering with the outer engagement pieces 18a and 18b. It becomes possible to pull out in the direction.
- a concave portion 16c recessed inward in the radial direction and a concave portion 16d recessed inward in the radial direction at a portion aligned with the pocket 10 in the axial direction are alternately formed in the circumferential direction, so that the portion of the split mold provided for forming the pocket 10 can be pulled out in the axial direction without interfering with the rim portions 8c and 8d.
- the cage 7b of this example is manufactured by axial draw molding because the pair of split dies are separated in the axial direction without damaging the cage after injection molding. Is possible.
- the cage 7b of this example is placed in an axial draw type (mold) cavity constituted by a pair of split molds (not shown), for example, polyamide resin, polyphenylene sulfide resin, or these resins. It can be manufactured by injection-molding a synthetic resin similar to that of a general synthetic resin cage, such as a mixture of reinforcing fibers, and then pulling apart the split molds in the axial direction.
- the cage 7b of this example can be manufactured by axial draw molding that can keep the manufacturing cost low, and the end portions 12c and 12d provided across the discontinuous portion 11a can be connected to each other in the radial direction. Relative displacement can be made possible and the relative displacement in the axial direction can be made impossible.
- the ends 12c and 12d are not yet engaged with each other in a state immediately after the pair of split dies are pulled apart in the axial direction. There is a gap between the end portions 12c and 12d.
- the ends 12c and 12d are engaged with each other as illustrated.
- the cage 7b may not shrink as desired during the cooling process, but the cage 7b is made of a synthetic resin and is a highly elastic body, so that it becomes a counterpart member after assembly. The desired shape is obtained by elastic deformation.
- [Second Example of Embodiment] 5 and 6 show a second example of the embodiment of the present invention.
- the formation positions of the outer engagement pieces 18a and 18b constituting the engagement portion 13b are different from the structure of the first example of the embodiment.
- the radial position of the pair of outer engagement pieces 18a and 18b provided at the other end portion 12d is opposite to the case of the first example of the embodiment, and the inner diameter side half of the end portion 12d is set.
- the outer engagement piece 18a is formed at one end portion in the axial direction of the portion
- the outer engagement piece 18b is formed at the other axial end portion of the outer diameter side half of the end portion 12d.
- these outer engagement pieces 18a and 18b are not overlapped with each other in the axial direction.
- the cage 7c of this example having such a configuration can be manufactured by axial draw molding, and the discontinuous portion can be formed by the engaging portion 13b.
- the end portions 12c and 12d provided across 11a can be engaged with each other so as to allow relative displacement in the radial direction and impossible relative displacement in the axial direction.
- Other configurations, operations, and effects of this example are the same as those of the first example of the embodiment.
- FIG. 7 shows a third example of the embodiment of the present invention.
- the shape of the inner engagement piece 17a constituting the engagement portion 13c is devised, and deformation such as sink marks and warpage occurs in the inner engagement piece 17a after injection molding.
- the rectangular parallelepiped cutout portions 19a and 19b are formed on both sides of the inner engagement piece 17a in the axial direction, and the radial dimension of the inner engagement piece 17a is determined at the both sides in the axial direction. It is small. More specifically, a notched portion 19a is formed on the inner diameter side portion on one axial side (left side in FIG.
- the outer engagement piece 18a formed on the outer diameter side half of the other end portion 12d is arranged on one axial direction side of the inner engagement piece 17a, and the other side in the axial direction of the inner engagement piece 17a is arranged on the other side.
- An outer engagement piece 18b formed on the inner diameter side half of the end portion 12d is disposed. In this way, even when the thinned portions 19a and 19b are formed in the inner engagement piece 17a, the inner engagement pieces 17a and the outer engagement pieces 18a and 18b are prevented from overlapping in the radial direction. In the case of this example having such a configuration, since the volume of the inner engagement piece 17a can be reduced, sink marks are less likely to occur in the inner engagement piece 17a after injection molding.
- the dimensional accuracy (shape accuracy) of the inner engagement piece 17a can be improved. Further, the weight of the cage 7d can be reduced and the material cost can be reduced by the amount that the volume of the inner engagement piece 17a can be reduced.
- Other configurations, operations, and effects of this example are the same as those of the first example of the embodiment.
- FIG. 8 shows a fourth example of the embodiment of the present invention. Also in the case of the retainer 7h of this example, as in the case of the third example of the embodiment, a rectangular parallelepiped lacking portion is provided on the opposite side portion with respect to the radial direction of both axial portions of the inner engagement piece 17b. 19c and 19d are formed. Particularly in the case of this example, the length dimension in the axial direction of the lacking portions 19c and 19d is made larger than that in the case of the third example of the embodiment, and the lacking portions 19c and 19d are made continuous in the radial direction. Yes.
- a notched portion 19c is formed on the inner diameter side portion of the inner engagement piece 17b on the one axial side (left side in FIG. 8), and the other side in the axial direction of the inner engagement piece 17b (right side in FIG. 8).
- a lacking portion 19d is formed in the outer diameter side portion of the. And these lacking parts 19c and 19d are made to continue in radial direction in the axial direction center part of the edge part 12c.
- the inner engagement piece 17b is formed of a pair of inner engagement pieces 23a and 23b each having a rectangular parallelepiped shape and spaced apart in the axial direction across the discontinuous portion 22 at the axially central portion of the end portion 12c. is doing.
- the inner engagement piece 23a is provided in the outer diameter side half of the end portion 12c near the one side in the axial direction, and the inner engagement piece 23b is formed at the portion closer to the other side in the axial direction. It is provided in the inner diameter side half.
- the inner engagement piece 17b having such a configuration includes a part of one split mold (mold element) arranged on one axial side and a part of the other split mold arranged on the other axial side. It is manufactured by injection molding in a state where it is overlapped in the radial direction at the axial center.
- an outer engagement piece 18a formed on the outer diameter side half of the other end 12d is disposed on one axial side of the inner engagement piece 17b (inner engagement piece 23a), and the inner engagement piece 17b.
- an outer engagement piece 18b formed on the inner diameter side half of the end 12d is disposed on the other side in the axial direction of the (inner engagement piece 23b). In this way, even when the thinned portions 19c and 19d are formed in the inner engagement piece 17b, the inner engagement piece 17b and the outer engagement pieces 18a and 18b are prevented from overlapping in the radial direction.
- the volume of the inner engagement piece 17b can be significantly reduced. For this reason, the flow fluctuation of the material at the time of injection molding can be suppressed, and it is possible to effectively prevent the inner engagement element pieces 23a, 23b constituting the inner engagement piece 17b from being deformed such as sink marks and warpage. Therefore, it is possible to improve the dimensional accuracy of the inner engagement pieces 23a and 23b. Further, the weight reduction of the cage 7h and the reduction of the material cost can be realized at a higher level.
- Other configurations, operations, and effects of this example are the same as those of the first example and the third example of the embodiment.
- FIG. 9 shows a fifth example of the embodiment of the present invention.
- the cage 7i of this example is formed with trapezoidal columnar underfill portions 19e and 19f whose cross-sectional shape does not change in the circumferential direction on the opposite side portion in the radial direction of both axial portions of the inner engagement piece 17c. Yes.
- the boundary surface regarding the axial direction with the lacking parts 19e and 19f of the inner side engagement piece 17c is made into the taper surfaces 24a and 24b.
- Both the tapered surfaces 24a and 24b are parallel to each other, and are inclined in a direction toward one axial side (the left side in FIG. 9) toward the radially outer side.
- the volume of the inner engagement piece 17c can be reduced while ensuring the strength and rigidity of the inner engagement piece 17c. For this reason, for example, even when the inner engagement piece 17c and the outer engagement pieces 18a and 18b collide during operation, it is possible to effectively prevent the inner engagement piece 17c from being broken or bent. Further, the weight of the cage 7i can be reduced and the material cost can be reduced.
- Other configurations, operations, and effects of this example are the same as those of the first example and the third example of the embodiment.
- FIG. 10 shows a sixth example of the embodiment of the present invention.
- trapezoidal columnar underfill portions 19g and 19h whose cross-sectional shape does not change in the circumferential direction are respectively provided on the opposite side portions in the radial direction of both axial portions of the inner engagement piece 17d.
- the pair of underfilled portions 19g and 19h are continuous in the radial direction at the axially central portion of the end portion 12c.
- the inner engagement piece 17d is composed of a pair of inner engagement pieces 23c and 23d each having a trapezoidal column shape and spaced apart in the axial direction.
- the taper surface which incline in the direction which goes to the axial direction one side goes to the radial direction outer side. 24c and 24d.
- One side surface in the axial direction of the inner engagement piece 23d provided on the inner diameter side half of the other side portion is formed as tapered surfaces 24c and 24d, respectively.
- these tapered surfaces 24c and 24d are parallel to each other.
- the volume of the inner engagement piece 17d can be significantly reduced while ensuring the strength and rigidity of the inner engagement pieces 23c and 23d. For this reason, for example, when the inner engagement pieces 23c and 23d and the outer engagement pieces 18a and 18b collide during operation, it is effective that the inner engagement pieces 23c and 23d are damaged or bent. Can be prevented. Moreover, weight reduction of the retainer 7j and reduction of material cost can be realized in a high dimension.
- Other configurations, operations, and effects of this example are the same as those of the first example, the third example, and the fourth example of the embodiment.
- FIG. 11 shows a seventh example of the embodiment of the invention.
- the lacking portion 19i having a cross-sectional shape in which trapezoids are overlapped in the radial direction on the opposite side portions with respect to the radial direction of the both axial side portions of the inner engagement piece 17e, 19j is formed.
- the pair of underfilled portions 19i and 19j are continuous in the radial direction at the central portion in the axial direction of the end portion 12c.
- the inner engagement piece 17e is composed of a pair of inner engagement pieces 23e and 23f that are spaced apart in the axial direction and each have a pentagonal cross section.
- a boundary surface in the axial direction of the inner engagement piece 17e with the lacking portions 19i and 19j is formed by combining a pair of tapered surfaces 24e, 24f, 24g, and 24h having different inclination directions. It has a letter-shaped composite surface. Specifically, in the end portion 12c, the other side surface in the axial direction (the right side surface in FIG. 11) of the inner engagement piece 23e provided on the outer diameter side half of the portion closer to the one axial side (left side in FIG. 11). ) Is a tapered surface 24e that is inclined in a direction toward one axial side as it goes radially outward.
- the inner side surface of the other side surface in the axial direction of the inner engagement element 23e is a tapered surface 24f that is inclined in a direction toward the one side in the axial direction toward the inner side in the radial direction.
- the side surface of the outer diameter side is a tapered surface 24g that is inclined in the direction toward the other side in the axial direction as it goes outward in the radial direction.
- the inner diameter side surface of the axial side surfaces of the inner engagement piece 23f is a tapered surface 24h that is inclined in a direction toward the other side in the axial direction toward the inner side in the radial direction.
- the volume of the inner engagement piece 17e is greatly increased while ensuring the strength and rigidity of the inner engagement pieces 23e and 23f. Can be made smaller. Further, the weight reduction of the cage 7k and the reduction of the material cost can be realized in a high dimension.
- Other configurations, operations, and effects of this example are the same as those of the first example, the third example, the fourth example, and the sixth example of the embodiment.
- FIG. 12 shows an eighth example of the embodiment of the present invention.
- the cage 7l of this example forms trapezoidal columnar underfill portions 19k and 19l whose cross-sectional shapes do not change in the diametrical direction on the opposite side portions with respect to the radial direction of the axially opposite side portions of the inner engagement piece 17f.
- the boundary surface regarding the axial direction with the lacking parts 19k and 19l in the inner engagement piece 17f is set to taper surfaces 24i and 24j.
- the taper surface 24i provided on the radially inner side is a direction toward the one axial side (the left side in FIG.
- the tapered surface 24j provided on the outer side in the radial direction is inclined in the direction toward the other side in the axial direction (the right side in FIG. 12) toward one side in the circumferential direction.
- the volume of the inner engagement piece 17f can be reduced while ensuring the strength and rigidity of the inner engagement piece 17f as in the fifth example of the embodiment.
- the axial dimension of the proximal end portion of the inner engagement piece 17f can be ensured, it is advantageous in securing strength and rigidity.
- the material cost can be reduced along with the weight reduction of the cage 7l.
- FIG. 13 shows a ninth example of the embodiment of the present invention. Also in the case of the cage 7m of this example, trapezoidal columnar underfill portions 19m and 19n whose cross-sectional shape does not change in the diameter direction are formed on the opposite side portions in the radial direction of the axially opposite side portions of the inner engagement piece 17g. is doing.
- the length dimension in the axial direction of the lacking portions 19m and 19n is made slightly larger than in the case of the eighth example of the embodiment. Thereby, a part of one pair of lacking parts 19m and 19n is made to continue in radial direction.
- the volume of the inner engagement piece 17g can be made smaller than in the case of the eighth example of the embodiment. Moreover, since the axial dimension of the base end part of the inner engagement piece 17g can be ensured, it is advantageous in securing strength and rigidity. In addition, it is possible to reduce the weight of the cage 7m and further reduce the material cost. Other configurations, operations, and effects of this example are the same as those of the first example, the third example, and the eighth example of the embodiment.
- FIG. 14 shows a tenth example of the embodiment of the present invention.
- trapezoidal columnar underfill portions 19o and 19p whose cross-sectional shape does not change in the diameter direction are formed on the opposite side portions in the radial direction of the axially opposite side portions of the inner engagement piece 17h. is doing.
- the pair of underfilled portions 19o and 19p are continuous in the radial direction at the central portion in the axial direction of the end portion 12c.
- the inner engagement piece 17h is composed of a pair of trapezoidal columnar inner engagement pieces 23g and 23h that are separated in the axial direction.
- the boundary surface in the axial direction of the inner engagement piece 17h with the lacking portions 19o and 19p is inclined in the direction toward the axial direction toward the one side in the circumferential direction (the back side with respect to the front and back direction in FIG. 14).
- the tapered surfaces 24k and 24l are inclined in the direction toward the other axial side surface (the right side surface in FIG. 14) of the inner engagement piece 23g provided on the outer diameter side half of the portion closer to the one axial side.
- the taper surface 24k is inclined in the direction toward the other side in the axial direction (the right side in FIG. 14) toward one side.
- the one axial side surface (the left side surface in FIG.
- the tapered surface 24l is inclined in the direction toward the one axial side (the left side in FIG. 14).
- the inner engagement pieces are secured while ensuring the strength and rigidity of the inner engagement pieces 23g and 23h.
- the volume of 17h can be greatly reduced.
- the axial dimensions of the base end portions of the inner engagement pieces 23g and 23h can be ensured, it is advantageous in securing strength and rigidity.
- the weight reduction and material cost reduction of the cage 7n can be realized in a high dimension.
- Other configurations, operations, and effects of the present example are the same as those of the first example, the third example, the fourth example, the sixth example, and the seventh example of the embodiment.
- both end portions in the axial direction of the engaging portion 13d are offset (biased) from the axial side surfaces (outer surfaces) of the rim portions 8c and 8d toward the axial center side. ing).
- the engaging portion 13d is provided only at the intermediate portion in the axial direction excluding both axial end portions of the cage 7e.
- the outer engagement pieces 18c and 18d constituting the engagement portion 13d are not formed at the end portion in the axial direction of the end portion 12d, but are offset to the center side in the axial direction. It is formed with.
- the outer engagement pieces 18c and 18d are shaped such that their axial ends are cut away from the outer engagement pieces 18a and 18b in the first example of the embodiment.
- the insertion space in which the both side portions in the radial direction of the engaging portion 13d and the portion on the opposite side to the engaging portion 13d in the axial direction are opened in the axial direction. 20 are formed.
- [Twelfth example of embodiment] 17 to 19 show a twelfth example of the embodiment of the present invention.
- the inner engagement pieces 18e and 18f constituting the engagement portion 13e are devised in shape and arranged in the portion between the outer engagement pieces 18e and 18f.
- the piece 17 is difficult to ride on these outer engagement pieces 18e and 18f.
- the radial dimension of the outer engaging thin plates 21a and 21b is 1/3 of the radial dimension of the end 12d.
- the outer engaging thin plate 21a is provided at the radially outer end portion of the end portion 12d
- the outer engaging thin plate 21b is provided at the inner diameter side end portion of the end portion 12d.
- the outer engagement piece 18f provided on the other side in the axial direction of the end portion 12d (left side in FIG. 19) has a radial dimension of 1/3 of the radial dimension of the end portion 12d, and the radial direction of the end portion 12d. It is provided in the center.
- the outer engagement pieces 18e (outer engagement thin plates 21a and 21b) and the outer engagement pieces 18f do not overlap with each other in the axial direction.
- [13th Embodiment] 20 to 22 show a thirteenth example of the embodiment of the present invention.
- the shape of the outer engagement pieces 18g and 18h constituting the engagement portion 13f is devised, and the inner engagement is arranged between the outer engagement pieces 18g and 18h.
- the piece 17 makes it difficult to ride on these outer engagement pieces 18g and 18h.
- the radial dimension of the outer engaging thin plates 21c and 21d is 1/4 of the radial dimension of the end 12d.
- the outer engaging thin plate 21c is provided at the radially outer end of the end portion 12d, and the outer engaging thin plate 21d is disposed at a radially inward portion of the end portion 12d (the end portion 12d is disposed in the radial direction).
- the outer engagement piece 18h provided on the other axial side of the end portion 12d is also formed from a pair of outer engagement thin plates 21e and 21f in a rectangular flat plate shape (partial cylindrical shape) separated in the radial direction. It is composed.
- the radial dimension of the outer engaging thin plates 21e and 21f is 1/4 of the radial dimension of the end 12d.
- the outer engagement thin plate 21e is provided in a radially outward portion of the end portion 12d (second portion from the outer diameter side when the end portion 12d is divided into four in the radial direction).
- a thin laminated plate 21f is provided at the radially inner end of the end 12d.
- the outer engagement pieces 18g (outer engagement thin plates 21c and 21d) and the outer engagement pieces 18h (outer engagement thin plates 21e and 21f) do not overlap each other in the axial direction.
- the radially inner side surface (the radially inner surface of the outer engaging thin plate 21d on the radially inner side) is formed from the radially outer surface of the outer engaging piece 18g (the radially outer surface of the radially outer outer engaging thin plate 21c).
- the dimension in the radial direction up to the side surface can be sufficiently large (1.5 times larger) than that of the outer engagement piece 18a of the first example of the embodiment. For this reason, it becomes difficult for the inner engagement piece 17 to ride on the outer engagement piece 18g.
- the dimension in the radial direction can be secured sufficiently large (can be made 1.5 times). For this reason, it becomes difficult for the inner engagement piece 17 to ride on the outer engagement piece 18h. As a result, also in the case of this example, the relative displacement in the axial direction between the end portions 12c and 12d can be effectively prevented by the engaging portion 13f.
- Other configurations, operations, and effects of this example are the same as those of the first example and the twelfth example of the embodiment.
- the shapes of the inner engagement piece and the outer engagement piece are not limited to the rectangular plate shape, and other shapes such as a triangular shape can be adopted.
- the number of outer engagement thin plates constituting the outer engagement piece is as follows. The number is not limited to two, and may be three or more depending on the diameter or material of the cage. Further, the radial dimensions of the outer engagement thin plates constituting the outer engagement piece need not be the same, and may be different from each other.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
図1~図4は、本発明の実施の形態の第1例を示している。本例のラジアルころ(ニードル)軸受用の保持器7bは、軸方向に間隔をあけて互いに同心に配置された、それぞれが欠円環状である1対のリム部8c、8dと、円周方向にわたって間欠的に、これらのリム部8c、8d同士の間に掛け渡される状態で設けられた複数本の柱部9とを備える。そして、円周方向に隣り合う柱部9とリム部8c、8dとにより四方を囲まれた部分のそれぞれを、ころ6(図23参照)を転動自在に保持するためのポケット10としている。
図5および図6は、本発明の実施の形態の第2例を示している。本例の保持器7cの場合には、係合部13bを構成する外側係合片18a、18bの形成位置を、実施の形態の第1例の構造とは異ならせている。具体的には、他方の端部12dに設ける1対の外側係合片18a、18bの径方向位置を、実施の形態の第1例の場合とは反対にして、端部12dの内径側半部の軸方向片端部に外側係合片18aを形成するとともに、端部12dの外径側半部の軸方向他端部に外側係合片18bを形成している。そして本例の場合にも、これらの外側係合片18a、18bを軸方向に関して互いに重畳しないようにしている。
図7は、本発明の実施の形態の第3例を示している。本例の保持器7dの場合には、係合部13cを構成する内側係合片17aの形状を工夫して、射出成形後に、この内側係合片17aにヒケや反りなどの変形が発生することを防止している。すなわち、本例の場合、内側係合片17aの軸方向両側部分に、それぞれ直方体状の欠肉部19a、19bを形成して、この内側係合片17aの径方向寸法を軸方向両側部分で小さくしている。より具体的には、この内側係合片17aの軸方向片側(図7の左側)の内径側部分に欠肉部19aを形成するとともに、内側係合片17aの軸方向他側(図7の右側)の外径側部分に欠肉部19bを形成している。そして、このような欠肉部19a、19bを設けた本例の内側係合片17aは、その断面形状がクランク形となる。なお、このような欠肉部19a、19bも、射出成形時に同時に形成される。
図8は、本発明の実施の形態の第4例を示している。本例の保持器7hの場合にも、実施の形態の第3例の場合と同様に、内側係合片17bの軸方向両側部分の径方向に関して反対側部分に、それぞれ直方体状の欠肉部19c、19dを形成している。特に本例の場合、欠肉部19c、19dの軸方向に関する長さ寸法を、実施の形態の第3例の場合よりも大きくして、欠肉部19c、19d同士を径方向に連続させている。具体的には、内側係合片17bの軸方向片側(図8の左側)の内径側部分に欠肉部19cを形成すると共に、内側係合片17bの軸方向他側(図8の右側)の外径側部分に欠肉部19dを形成している。そして、これら欠肉部19c、19d同士を、端部12cの軸方向中央部にて径方向に連続させている。
図9は、本発明の実施の形態の第5例を示している。本例の保持器7iは、内側係合片17cの軸方向両側部分の径方向に関して反対側部分に、それぞれ円周方向に関して断面形状が変化しない台形柱状の欠肉部19e、19fを形成している。これにより、内側係合片17cのうちの、欠肉部19e、19fとの軸方向に関する境界面を、テーパ面24a、24bとしている。これら両テーパ面24a、24bは、互いに平行で、径方向外側に向かうほど軸方向片側(図9の左側)に向かう方向に傾斜している。
図10は、本発明の実施の形態の第6例を示している。本例の保持器7jの場合にも、内側係合片17dの軸方向両側部分の径方向に関して反対側部分に、それぞれ円周方向に関して断面形状が変化しない台形柱状の欠肉部19g、19hを形成している。また、1対の欠肉部19g、19h同士を、端部12cの軸方向中央部にて径方向に連続させている。これにより、内側係合片17dを、軸方向に離隔した、それぞれが台形柱状の1対の内側係合素片23c、23dから構成している。
図11は、本発明の実施の形態の第7例を示している。本例の保持器7kの場合には、内側係合片17eの軸方向両側部分の径方向に関して反対側部分に、それぞれ台形を径方向に重ね合わせたような断面形状を有する欠肉部19i、19jを形成している。また、1対の欠肉部19i、19j同士を端部12cの軸方向中央部にて径方向に連続させている。これにより、内側係合片17eを、軸方向に離隔した、それぞれが断面五角形状の1対の内側係合素片23e、23fから構成している。
図12は、本発明の実施の形態の第8例を示している。本例の保持器7lは、内側係合片17fの軸方向両側部分の径方向に関して反対側部分に、それぞれ直径方向に関して断面形状が変化しない台形柱状の欠肉部19k、19lを形成している。これにより、内側係合片17fのうちの、欠肉部19k、19lとの軸方向に関する境界面を、テーパ面24i、24jとしている。これらのテーパ面24i、24jのうち、径方向内側に設けられたテーパ面24iは、円周方向片側(図12の表裏方向に関して裏側)に向かうほど軸方向片側(図12の左側)に向かう方向に傾斜しており、径方向外側に設けられたテーパ面24jは、円周方向片側に向かうほど軸方向他側(図12の右側)に向かう方向に傾斜している。
図13は、本発明の実施の形態の第9例を示している。本例の保持器7mの場合にも、内側係合片17gの軸方向両側部分の径方向に関して反対側部分に、それぞれ直径方向に関して断面形状が変化しない台形柱状の欠肉部19m、19nを形成している。特に、本例の場合には、欠肉部19m、19nの軸方向に関する長さ寸法を、実施の形態の第8例の場合よりも少しだけ大きくしている。これにより、1対の欠肉部19m、19nの一部を径方向に連続させている。
図14は、本発明の実施の形態の第10例を示している。本例の保持器7nの場合には、内側係合片17hの軸方向両側部分の径方向に関して反対側部分に、それぞれ直径方向に関して断面形状が変化しない台形柱状の欠肉部19o、19pを形成している。また、1対の欠肉部19o、19p同士を端部12cの軸方向中央部にて径方向に連続させている。これにより、内側係合片17hを、軸方向に離隔した、それぞれが台形柱状の1対の内側係合素片23g、23hから構成している。
図15および図16は、本発明の実施の形態の第11例を示している。本例の保持器7eの場合には、係合部13dの軸方向両端部を、リム部8c、8dの軸方向側面(外側面)よりも軸方向中央側にそれぞれオフセットさせている(偏らせている)。言い換えれば、係合部13dを、保持器7eの軸方向両端部を除いた、軸方向中間部にのみ設けている。このために、本例の場合には、係合部13dを構成する外側係合片18c、18dを、端部12dの軸方向端部には形成せず、軸方向中央側にオフセットさせた状態で形成している。すなわち、外側係合片18c、18dは、実施の形態の第1例における外側係合片18a、18bからその軸方向端部を切除したような形状となっている。このような構成により、本例の場合には、係合部13dの軸方向両側部分に、径方向両側部分と、軸方向に関してこの係合部13dとは反対側部分とが開口した、挿入空間20をそれぞれ形成している。
図17~図19は、本発明の実施の形態の第12例を示している。本例の保持器7fの場合には、係合部13eを構成する外側係合片18e、18fの形状を工夫して、これらの外側係合片18e、18fの間部分に配置した内側係合片17が、これらの外側係合片18e、18fに乗り上げにくくしている。具体的には、他方の端部12dの軸方向片側(図19の右側)に設ける外側係合片18eを、径方向に離隔した矩形平板状(部分円筒状)の1対の外側係合薄板21a、21bから構成している。これら外側係合薄板21a、21bの径方向寸法は、端部12dの径方向寸法の1/3である。そして、このうちの外側係合薄板21aを、この端部12dの径方向外端部に設けるとともに、外側係合薄板21bを、この端部12dの内径側端部に設けている。一方、この端部12dの軸方向他側(図19の左側)に設ける外側係合片18fを、径方向寸法を端部12dの径方向寸法の1/3とし、この端部12dの径方向中央部に設けている。このような本例の場合にも、外側係合片18e(外側係合薄板21a、21b)と外側係合片18fとは、軸方向に関して互いに重畳しない。
図20~図22は、本発明の実施の形態の第13例を示している。本例の保持器7gの場合にも、係合部13fを構成する外側係合片18g、18hの形状を工夫して、これらの外側係合片18g、18hの間部分に配置した内側係合片17が、これらの外側係合片18g、18hに乗り上げにくくしている。具体的には、他方の端部12dの軸方向片側(図22の右側)に設ける外側係合片18gを、径方向に離隔した矩形平板状(部分円筒状)の1対の外側係合薄板21c、21dから構成している。これら外側係合薄板21c、21dの径方向寸法は、端部12dの径方向寸法の1/4である。そして、このうちの外側係合薄板21cを、この端部12dの径方向外端部に設けるとともに、外側係合薄板21dを、この端部12dの径方向内寄り部分(端部12dを径方向に4分割した場合の内径側から2番目の部分)に設けている。
2 外径側部材
3 外輪軌道
4 軸
5 内輪軌道
6 ころ
7、7a~7n 保持器
8、8a~8d リム部
9 柱部
10 ポケット
11、11a 不連続部
12a~12d 端部
13、13a~13f 係合部
14a、14b 外径側係合片
15a、15b 内径側係合片
16a~16d 凹部
17、17a~17h 内側係合片
18a~18h 外側係合片
19a~19p 欠肉部
20 挿入空間
21a~21f 外側係合薄板
22 不連続部
23a~23h 内側係合素片
Claims (6)
- 1対の割型により構成されるアキシャルドロー型を使用した合成樹脂の射出成形により一体に製造され、1対のリム部と、複数本の柱部と、複数個のポケットと、係合部とを備え、円周方向1個所に不連続部を有するラジアルころ軸受用保持器であって、
前記1対のリム部は、それぞれが欠円環状で、軸方向に間隔をあけて互いに同心に設けられており、これらのリム部の周面のうちで、前記ポケットのそれぞれと軸方向に整合する部分には、径方向に凹んだ凹部が、これらの凹部の形成位置が、前記ポケットのそれぞれの軸方向両側で径方向に関して反対となるように、形成されており、
前記柱部のそれぞれは、円周方向にわたって間欠的に、前記リム部同士の間に掛け渡される状態で設けられており、
前記ポケットのそれぞれは、前記リム部と円周方向に隣り合う前記柱部とにより四方を囲まれる部分に設けられており、
前記係合部は、前記不連続部を挟んで設けられた端部同士を係合するものであり、
前記係合部が、前記端部のうちの一方の端部の軸方向中間部に他方の端部に向けて円周方向に延出する状態で設けられた内側係合片と、前記他方の端部の軸方向に離隔した両側部分にそれぞれ前記一方の端部に向けて円周方向に延出する状態で設けられた、軸方向に関して互いに重畳しない1対の外側係合片とを備え、前記内側係合片をこれらの外側係合片の間部分に配置することにより、この内側係合片とこれらの外側係合片とを径方向には互いに重畳させずに、この内側係合片とこれらの外側係合片とをそれぞれ軸方向に係合させている、
ラジアルころ軸受用保持器。 - 前記内側係合片の軸方向両側部分の径方向に関して反対側部分に、それぞれ欠肉部が形成されている、請求項1に記載したラジアルころ軸受用保持器。
- 前記内側係合片のうちの欠肉部との軸方向に関する境界面がテーパ面である、請求項2に記載したラジアルころ軸受用保持器。
- 前記内側係合片が、前記1対の欠肉部同士を径方向に連続させることにより、軸方向に離隔した1対の内側係合素片から構成されている、請求項2に記載したラジアルころ軸受用保持器。
- 前記1対の外側係合片の軸方向端部をそれぞれ、前記リム部の軸方向側面よりも軸方向中央側にオフセットさせることで、前記係合部の両側部分に挿入空間が形成されている、請求項1に記載したラジアルころ軸受用保持器。
- 前記外側係合片が、径方向に離隔した複数の外側係合薄板から構成されている、請求項1に記載したラジアルころ軸受用保持器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/824,355 US9145917B2 (en) | 2012-08-10 | 2012-10-16 | Cage for radial roller bearing |
KR1020137034432A KR101521379B1 (ko) | 2012-08-10 | 2012-10-16 | 래디얼 롤러 베어링용 보지기 |
CN201280032179.8A CN104204576B (zh) | 2012-08-10 | 2012-10-16 | 径向滚柱轴承用保持器 |
EP12879154.8A EP2884127B1 (en) | 2012-08-10 | 2012-10-16 | Radial roller bearing cage |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012178317 | 2012-08-10 | ||
JP2012-178317 | 2012-08-10 | ||
JP2012201216A JP6003433B2 (ja) | 2012-08-10 | 2012-09-13 | ラジアルころ軸受用保持器 |
JP2012-201216 | 2012-09-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014024327A1 true WO2014024327A1 (ja) | 2014-02-13 |
Family
ID=50067603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/076737 WO2014024327A1 (ja) | 2012-08-10 | 2012-10-16 | ラジアルころ軸受用保持器 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9145917B2 (ja) |
EP (1) | EP2884127B1 (ja) |
JP (1) | JP6003433B2 (ja) |
KR (1) | KR101521379B1 (ja) |
CN (1) | CN104204576B (ja) |
WO (1) | WO2014024327A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102549284B (zh) * | 2010-09-14 | 2015-04-01 | 日本精工株式会社 | 单剖分式保持架 |
JP6269021B2 (ja) * | 2013-12-17 | 2018-01-31 | 日本精工株式会社 | ラジアルころ軸受用保持器 |
CN104895931B (zh) * | 2015-05-26 | 2018-02-02 | 德清恒富机械有限公司 | 滚针轴承 |
US10837488B2 (en) | 2018-07-24 | 2020-11-17 | Roller Bearing Company Of America, Inc. | Roller bearing assembly for use in a fracking pump crank shaft |
DE102020127445A1 (de) * | 2020-10-19 | 2022-04-21 | Schaeffler Technologies AG & Co. KG | Wälzlagerkäfig mit Käfigschloss sowie Verfahren zur Montage des Wälzlagerkäfigs |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4859926U (ja) * | 1971-11-10 | 1973-07-30 | ||
JPS54111242U (ja) * | 1978-01-20 | 1979-08-04 | ||
JPS55115435U (ja) * | 1979-02-09 | 1980-08-14 | ||
JPS6071728U (ja) * | 1983-10-25 | 1985-05-21 | 日本精工株式会社 | 転がり軸受用保持器 |
JP2011089612A (ja) * | 2009-10-23 | 2011-05-06 | Jtekt Corp | 針状ころ軸受用の保持器及び針状ころ軸受 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2041342C3 (de) * | 1970-08-20 | 1981-11-26 | Industriewerk Schaeffler Ohg, 8522 Herzogenaurach | Kunststoffkäfig für Wälzlager |
US3881790A (en) * | 1973-08-06 | 1975-05-06 | Federal Mogul Corp | One piece molded plastic retainer for cylindrical roller bearings and method of manufacture |
US4472007A (en) * | 1983-04-04 | 1984-09-18 | The Torrington Company | Cage assembly |
US4865473A (en) | 1988-09-06 | 1989-09-12 | The Torrington Company | Single split cage locking tab |
DE4038444A1 (de) * | 1990-12-01 | 1992-06-04 | Schaeffler Waelzlager Kg | Geschlitzter waelzkoerperkaefig |
JP2008008333A (ja) * | 2006-06-27 | 2008-01-17 | Nsk Ltd | ラジアルころ軸受用保持器の製造方法 |
FR2918137A1 (fr) * | 2007-06-29 | 2009-01-02 | Snr Roulements Sa | Cage fendue a double rangee de rouleaux ou d'aiguilles. |
CN102549284B (zh) * | 2010-09-14 | 2015-04-01 | 日本精工株式会社 | 单剖分式保持架 |
CN102639889A (zh) * | 2010-11-30 | 2012-08-15 | 日本精工株式会社 | 分割型滚动轴承用保持器 |
-
2012
- 2012-09-13 JP JP2012201216A patent/JP6003433B2/ja not_active Expired - Fee Related
- 2012-10-16 WO PCT/JP2012/076737 patent/WO2014024327A1/ja active Application Filing
- 2012-10-16 KR KR1020137034432A patent/KR101521379B1/ko active IP Right Grant
- 2012-10-16 EP EP12879154.8A patent/EP2884127B1/en active Active
- 2012-10-16 US US13/824,355 patent/US9145917B2/en active Active
- 2012-10-16 CN CN201280032179.8A patent/CN104204576B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4859926U (ja) * | 1971-11-10 | 1973-07-30 | ||
JPS54111242U (ja) * | 1978-01-20 | 1979-08-04 | ||
JPS55115435U (ja) * | 1979-02-09 | 1980-08-14 | ||
JPS6071728U (ja) * | 1983-10-25 | 1985-05-21 | 日本精工株式会社 | 転がり軸受用保持器 |
JP2011089612A (ja) * | 2009-10-23 | 2011-05-06 | Jtekt Corp | 針状ころ軸受用の保持器及び針状ころ軸受 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2884127A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2884127A1 (en) | 2015-06-17 |
EP2884127B1 (en) | 2019-02-20 |
JP6003433B2 (ja) | 2016-10-05 |
CN104204576B (zh) | 2017-12-29 |
EP2884127A4 (en) | 2016-03-30 |
US20150176646A1 (en) | 2015-06-25 |
US9145917B2 (en) | 2015-09-29 |
KR20140051863A (ko) | 2014-05-02 |
JP2014055639A (ja) | 2014-03-27 |
KR101521379B1 (ko) | 2015-05-18 |
CN104204576A (zh) | 2014-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014024327A1 (ja) | ラジアルころ軸受用保持器 | |
JP6055357B2 (ja) | 円錐ころ軸受用樹脂製保持器 | |
KR101521378B1 (ko) | 래디얼 롤러 베어링용 보지기 | |
US9382947B2 (en) | Retainer for radial roller bearing | |
WO2012036154A1 (ja) | 1つ割れ保持器 | |
JP6507764B2 (ja) | 円すいころ軸受 | |
KR20100113060A (ko) | 댐핑형 스큐 기어 | |
JP2008008333A (ja) | ラジアルころ軸受用保持器の製造方法 | |
JP2007113592A (ja) | 合成樹脂製転がり軸受用保持器及び転がり軸受 | |
JP4840250B2 (ja) | ラジアルニードル軸受 | |
JP5831120B2 (ja) | ラジアルころ軸受用保持器 | |
JP2014040916A (ja) | 転がり軸受用ケージ、転がり軸受及び自動車用電気式パワーステアリング | |
JP5822383B2 (ja) | 減速装置 | |
JP6197605B2 (ja) | ラジアルニードル軸受用保持器 | |
JP5567453B2 (ja) | 複列ころ軸受および複列ころ軸受の保持器 | |
JP2011137500A (ja) | 保持器付きころおよび樹脂製保持器の成形方法 | |
JP2012112418A (ja) | ラジアルニードル軸受用保持器 | |
JP5909893B2 (ja) | ラジアルニードル軸受 | |
JP5831121B2 (ja) | ラジアルころ軸受用保持器 | |
WO2017141437A1 (ja) | 軸受用保持器、及びその製造方法 | |
JP2011237009A (ja) | ラジアルニードル軸受用保持器 | |
JP2009085401A (ja) | ラジアルニードル軸受の組立方法及びラジアルニードル軸受用予備保持器 | |
JP5990955B2 (ja) | プーリ付転がり軸受 | |
JP2005240912A (ja) | プーリ装置 | |
JP2014105763A (ja) | ラジアルニードル軸受用スペーサ及びその製造方法と遊星歯車用回転支持装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 13824355 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20137034432 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012879154 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12879154 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |