WO2022176935A1 - 一方向クラッチ - Google Patents
一方向クラッチ Download PDFInfo
- Publication number
- WO2022176935A1 WO2022176935A1 PCT/JP2022/006312 JP2022006312W WO2022176935A1 WO 2022176935 A1 WO2022176935 A1 WO 2022176935A1 JP 2022006312 W JP2022006312 W JP 2022006312W WO 2022176935 A1 WO2022176935 A1 WO 2022176935A1
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- WIPO (PCT)
- Prior art keywords
- outer sleeve
- retainer
- housing
- way clutch
- shaft
- Prior art date
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- 238000003780 insertion Methods 0.000 claims abstract description 24
- 230000037431 insertion Effects 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 23
- 238000005859 coupling reaction Methods 0.000 claims description 23
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
Definitions
- the present invention relates to a one-way clutch in which unidirectional rotation of a shaft is transmitted to a housing.
- Patent Document 1 A conventional one-way clutch of this type is disclosed in Patent Document 1, for example.
- This one-way clutch includes a ring-shaped member and a holding member in which a protruding post is fitted in the ring.
- a plurality of protruding columns are erected on the end surface of the main body of the holding member, which has an insertion hole into which the rotating shaft is inserted, so as to surround the insertion hole.
- a needle is held in a holding groove formed in a gap between the projecting pillars.
- the working part consists of an outer cylindrical body into which the one-way clutch is fitted, and a torque transmission member integrally formed therewith.
- the outer cylindrical body is rotatable integrally with the ring-shaped member on the outer periphery of the ring-shaped member by engaging the engagement ridges provided on the inner peripheral surface with the notches provided on the outer surface of the ring-shaped member. It is attached.
- Patent Document 2 As a conventional one-way clutch of this type, there is also one disclosed in Patent Document 2, for example.
- This one-way clutch is composed of a torque transmission ring, an outer ring, rollers, and a retainer that holds an urging spring, and the retainer is housed on the inner periphery of the outer ring.
- a shaft When in use, a shaft is inserted through the torque transmission ring and the outer ring that are axially connected, and a pair of retaining rings are fitted to both ends of the one-way clutch on the outer periphery of the shaft to prevent the one-way clutch from coming off.
- the engaging ridge provided on the inner circumference of the outer cylindrical body is provided on the outer circumference of the ring-shaped member in the radial direction of the one-way clutch.
- the structure is such that the outer cylindrical body is attached to the outer circumference of the ring-shaped member by engaging with the notch. Therefore, if the radial size of the one-way clutch is reduced by reducing the radial thickness of the ring-shaped member, the ring-shaped member may be broken because the load is applied to the ring-shaped member from the needle.
- the one-way clutch disclosed in the conventional patent document 2 can be made compact in the radial direction by connecting the torque transmission ring and the outer ring in the axial direction.
- the present invention was made to solve such problems, a retainer in which a plurality of columnar portions are erected at predetermined intervals on the pedestal in a circumferential direction surrounding a shaft inserted through an inner diameter portion formed on the pedestal; A hollow cylindrical outer sleeve with an inner peripheral portion surrounding the side periphery of each columnar portion erected on the pedestal; a cylindrical rolling element that is rollably held in a pocket portion that is sandwiched between the inner wall surface of the outer sleeve and the outer circumference of the shaft between adjacent columnar portions; an elastic member that biases the rolling element toward one of the adjacent columnar portions in the pocket; A one-way clutch comprising a housing that covers the retainer and the outer circumference of the outer sleeve and that transmits rotation of the shaft in one direction according to the rolling position of the rolling element in the pocket,
- the retainer has a pedestal on the side opposite to the side on which each columnar portion is erected, and a connecting portion provided with a portion to be engaged extend
- the housing has a storage portion with an inner diameter that covers each of the outer peripheries of the retainer and the outer sleeve.
- a restricting wall for restricting movement of the retainer and the outer sleeve toward one end of the housing in the axial direction is formed at one end of the housing so as to face the end surface of the coupling portion.
- a cap for restricting deviation of the retainer and the outer sleeve from the insertion port is fitted to an insertion port of the retainer and the outer sleeve into the storage portion, which opens at the other end side of the storage portion.
- the retainer and the outer sleeve are housed in the storage portion of the housing having an inner diameter covering the outer peripheries thereof.
- An engaging portion formed on the inner periphery of the housing engages with an engaged portion provided on the connecting portion in the axial direction of the housing, whereby the rotation of the cage is controlled by the housing. is transmitted to
- the conventional technique disclosed in Patent Document 1 in which the inner periphery of the housing and the outer periphery of the outer sleeve are engaged in the radial direction of the one-way clutch, limits the reduction in the radial thickness of the outer sleeve.
- the retainer and the outer sleeve housed in the storage portion of the housing are restricted from moving to the one end side of the storage portion in the axial direction by the restricting wall formed on the one end side of the storage portion.
- the cap by fitting the cap into the insertion opening of the retainer and the outer sleeve into the storage section, which opens at the other end side of the storage section in the axial direction, the retainer and the outer sleeve are prevented from deviating from the insertion opening. is regulated. Therefore, in order to prevent the retainer and the outer sleeve that are inserted through the shaft from coming off, it is necessary to perform an assembly work of fitting a pair of snap rings onto the shaft, like the conventional one-way clutch disclosed in Patent Document 2. This reduces the time and effort required for assembly work.
- the present invention is characterized in that, in the retainer, the engaged portions are formed by missing the joint portions from the end faces of the joint portions in the axial direction at a plurality of locations by a predetermined length.
- the coupling portion is cut away from the end face of the coupling portion at a plurality of locations in the axial direction of the housing by a predetermined length to form the engaged portion, so that the coupling portion extends in the axial direction. It becomes flexible in the direction of intersection. For this reason, when bending stress or torsional stress is applied to the housing, the joint part elastically deforms due to the stress and absorbs the stress, thereby preventing the rolling elements from skewing or slipping. In this way, it is possible to prevent the engagement failure of the rolling elements during the locking operation and the rolling failure during the idling operation.
- the length of the joint portion extending from the end surface of the pedestal on which the columnar portion is erected is a predetermined length of the engaged portion formed by missing a predetermined length in the axial direction. It is characterized by being set longer than the length.
- the strength of the coupling portion of the retainer can be maintained, and the engaged portion formed in the coupling portion firmly engages with the engaging portion formed on the inner circumference of the housing. , the rotation of the retainer is reliably transmitted to the housing. Also, the retainer can be reliably positioned with respect to the housing.
- the present invention is characterized in that the length of the engaged portion and the engaging portion is set such that a gap is formed between the end surface of the connecting portion and the restricting wall when they are engaged with each other.
- the retainer is press-fitted into the outer sleeve with the rectangular inner wall surface of the outer sleeve coming into contact with the prism-shaped side periphery of the rising portion of each columnar portion from the pedestal. It is characterized by being fixed.
- each columnar portion of the retainer abuts against the rectangular inner wall surface of the outer sleeve and is press-fitted into the outer sleeve, thereby separating the retainer and the outer sleeve.
- the present invention is characterized in that the cap has an inner diameter portion through which the shaft is inserted, and the housing has an inner diameter portion through which the shaft is inserted on the opposite side of the accommodating portion to which the cap is fitted. do.
- the shaft is inserted through the inner diameter portion formed in the pedestal of the retainer, the inner diameter portion provided in the housing on the side opposite to the side on which the cap of the storage portion is provided, and the inner diameter portion provided in the cap. rotation is supported. Therefore, the shaft rotates stably without shaking.
- the present invention is characterized in that the outer peripheral surface of the outer sleeve has a shape in which circular arc surfaces and flat surfaces are alternately arranged.
- FIG. 1(a) is a front view of a one-way clutch according to an embodiment of the present invention
- FIG. 1(b) is a perspective view of a section of the one-way clutch cut away
- FIG. 2(a) is a front view of a housing that constitutes the one-way clutch shown in FIG. 1
- FIG. 2(b) is a perspective view of a cross section of the housing.
- (a) is a perspective view of the internal unit taken out from the housing shown in FIG.1(b)
- (b) is a perspective view of the state which removed the outer sleeve from the internal unit.
- 3(a) is a perspective view of the retainer that constitutes the internal unit shown in FIG. be.
- 4(a) is a perspective view of the coupling portion shown in FIG.
- FIG. 4(b) viewed from another angle
- FIG. 4(b) is a perspective view of a cross section of the retainer shown in FIG. 4.
- FIG. (a) is a perspective view of an outer sleeve constituting the internal unit shown in FIG. 3 (a)
- (b) is a front view thereof. It is a front view of an internal unit shown to Fig.3 (a).
- (a) is a front view of a cap that constitutes the one-way clutch shown in FIG. 1, and (b) is a perspective view of a cross section of the cap.
- FIG. 1(a) is a front view of a one-way clutch 1 according to an embodiment of the present invention
- FIG. 1(b) is a perspective view of a cross section of the one-way clutch 1 taken along line Ib-Ib.
- the one-way clutch 1 is constructed such that an inner unit 5 comprising a retainer 3 and an outer sleeve 4 is accommodated in a housing 2 and a cap 6 is fitted to an insertion opening of the inner unit 5 into the housing 2 .
- the one-way clutch 1 transmits unidirectional rotation of a shaft 7 (see FIG. 7 ), which is inserted into the internal unit 5 and will be described later, to the housing 2 .
- a rubber roller is wound around the outer periphery of the housing 2, and a gear or the like is formed on the outer periphery thereof.
- FIG. 2(a) A front view of the housing 2 is shown in FIG. 2(a), and a perspective view of a cross section taken along line IIb-IIb is shown in FIG. 2(b).
- the housing 2 is molded of resin, metal, or the like into a hollow cylindrical shape, and inside, spaces having different inner diameters are formed side by side in the axial direction.
- a space with a large inner diameter in which the internal unit 5 is stored constitutes a storage portion 2 a for the internal unit 5 .
- the storage portion 2 a has an inner diameter that covers the outer peripheries of the retainer 3 and the outer sleeve 4 , and covers the outer peripheries of the retainer 3 and the outer sleeve 4 .
- a restriction wall 2b is formed on one end side of the storage portion 2a in the axial direction of the housing 2 by reducing the inner diameter of the housing 2.
- a fitting groove 2d into which the cap 6 is fitted is formed along the inner periphery of an insertion opening 2c into the storage portion 2a of the internal unit 5, which opens at the other end side of the storage portion 2a in the axial direction of the housing 2. It is formed in an annular shape.
- the restricting wall 2b restricts the internal unit 5 from moving toward one end (thrust direction) of the storage portion 2a, and the cap 6 fitted to the insertion opening 2c restricts the internal unit 5 from deviating from the insertion opening 2c. do.
- the housing 2 has an inner diameter portion 2e having an inner diameter smaller than the inner diameter of the storage portion 2a on the opposite side of the storage portion 2a to which the cap 6 is fitted.
- the inner diameter of the inner diameter portion 2e is formed to be one step smaller than the spaces formed on both sides thereof and having an inner diameter smaller than that of the storage portion 2a.
- the housing 2 has the shaft 7 coaxially inserted through the inner diameter portion 2e and contacts the shaft 7 only at the inner diameter portion 2e.
- engaging portions 2f that engage with the retainer 3 are formed at three locations extending in the axial direction. In this embodiment, each engaging portion 2f extends along the inner periphery of the storage portion 2a by a length L1 from the restricting wall 2b toward the insertion opening 2c.
- FIG. 3(a) is a perspective view of the internal unit 5 taken out from the housing 2
- FIG. 3(b) is a perspective view of the internal unit 5 with the outer sleeve 4 removed.
- 4(a) is a perspective view of the cage 3 as seen from its columnar portion 3a side
- FIG. 4(b) is a perspective view of the cage 3 as seen from its connecting portion 3b side.
- 5(a) is a perspective view of the connecting portion 3b viewed from another angle
- FIG. 5(b) is a perspective view of a cross section of the retainer 3 taken along its axial direction.
- the retainer 3 is molded from resin, metal, or the like, and the shaft 7 is inserted through an inner diameter portion 3d formed by opening at the center of the pedestal 3c shown in FIG. 5(b).
- a plurality of columnar portions 3a are erected on the pedestal 3c at predetermined intervals in the circumferential direction surrounding the shaft 7 inserted through the inner diameter portion 3d.
- the engaged portion 3e and the coupling portions 3b provided at three locations extend in a cylindrical shape surrounding the shaft 7 to be inserted.
- the engaged portion 3e is cut off from the end surface 3f of the connecting portion 3b in the axial direction of the housing 2 by a predetermined length L2 (see FIG. 4A) at three positions of the connecting portion 3b. Thus, it is formed.
- the connecting portion 3b is formed on each island formed in a substantially C shape when the retainer 3 is viewed from the connecting portion 3b side, and each engaged portion 3e extends in the circumferential direction. , forming a cushioning portion that cushions the stress applied to the joint portion 3b.
- the engaging portions 2f are engaged with the engaged portions 3e in the axial direction, and the rotation of the retainer 3 is transmitted.
- each engaging portion 2f is set to be equal to or greater than the length L2 of the engaged portion 3e so that the end surface 3f of the coupling portion 3b faces the restricting wall 2b (L1 ⁇ L2). Further, the length L3 by which the coupling portion 3b extends from the end surface 3g (see FIG. 4A) of the pedestal 3c on which each columnar portion 3a stands is set longer than the predetermined length L2 of the engaged portion 3e. (L3>L2).
- the length L3 by which the coupling portion 3b extends from the end face 3g of the base 3c on which each columnar portion 3a stands is set to be equal to or greater than the length L4 by which each columnar portion 3a protrudes from the end face 3g (L3 ⁇ L4 ).
- FIG. 6(a) A perspective view of the outer sleeve 4 is shown in FIG. 6(a), and a front view thereof is shown in FIG. 6(b). It has a hollow cylindrical shape.
- This outer sleeve 4 is molded from resin, metal, or the like.
- the outer peripheral surface of the outer sleeve 4 has a shape in which circular arc surfaces 4a and flat surfaces 4b are alternately arranged, as shown in FIG.
- a wedge surface 4c is formed on the inner peripheral surface of the outer sleeve 4 so that the radial position of the wedge surface 4c becomes smaller in the clockwise direction in the figure.
- the outer sleeve 4 is attached to the retainer 3 so as to surround the side periphery of each columnar portion 3a of the retainer 3, and constitutes an internal unit 5 together with the retainer 3, as shown in FIG. 3(a).
- the retainer 3 is provided with a rectangular inner wall surface on the inner peripheral side of the outer sleeve 4 attached to the retainer 3 around the prismatic side periphery of the rising portion 3h of each columnar portion 3a from the pedestal 3c. 4d abuts and is press-fitted into the outer sleeve 4, thereby being fixed to the outer sleeve 4. As shown in FIG.
- FIG. 5a is a front view of the internal unit 5.
- FIG. The pocket portion 5a is formed by being sandwiched between the inner wall surface of the outer sleeve 4 and the outer circumference of the shaft 7 indicated by the dashed line in the figure, between the adjacent columnar portions 3a, 3a.
- the pocket portion 5a accommodates a cylindrical needle roller 8 made of steel and a steel spring 9 having a substantially S shape when viewed from the side, as shown in FIG. 3(b).
- the needle roller 8 constitutes a rolling element that is rollably held in the pocket portion 5a, and the spring 9 is attached to one of the adjacent columnar portions 3a, 3a in the pocket portion 5a. It constitutes an elastic member that biases the roller 8 .
- the elastic member may be formed integrally with the retainer 3 on the side surface of the columnar portion 3a facing the pocket portion 5a of the retainer 3 instead of being formed separately from the retainer 3.
- FIG. 3A An internal unit 5 (see FIG. 3A) in which an outer sleeve 4 is attached to a retainer 3 surrounding each columnar portion 3a is inserted into a storage portion 2a inside the housing 2 through an insertion port 2c of the housing 2. .
- the retainer 3 is arranged coaxially with the outer sleeve 4 in the housing 2 so that the outer circumference of the connecting portion 3b is aligned with the outer circumference of the outer sleeve 4, as shown in FIG. 1(b).
- the insertion opening 2c of the housing 2 is covered with the cap 6 to close the insertion opening 2c.
- FIG. 8(a) shows a front view of the cap 6, and FIG.
- FIG. 8(b) shows a perspective view of a cross section taken along line VIIIb-VIIIb.
- the cap 6 is molded of resin, metal, or the like into a hollow cylindrical shape having an inner diameter portion 6a in which the shaft 7 is inserted. ing.
- the fitting rib 6b is fitted into the fitting groove 2d formed in the insertion opening 2c of the housing 2, thereby fixing the cap 6 to the insertion opening 2c.
- the rotation of the shaft 7 in one direction is transmitted to the housing 2 according to the rolling position of the needle roller 8 in the pocket portion 5a. That is, when the shaft 7 rotates in the clockwise direction A, in which the radial position of the wedge surface 4c shown in FIG. It bites between the outer peripheral surface. Therefore, the needle roller 8 is locked, torque is transmitted from the shaft 7 to the housing 2, and the rotation of the shaft 7 in the clockwise direction A is transmitted to the housing 2, which rotates in the same direction.
- the retainer 3 and the outer sleeve 4 are accommodated in the accommodating portion 2a of the housing 2 having an inner diameter covering the outer peripheries thereof, as described above.
- the housing 2 and retainer 3 are connected by engaging the engaging portion 2f formed on the inner circumference of the housing 2 with the engaged portion 3e provided on the coupling portion 3b in the axial direction of the housing 2. , the rotation of the retainer 3 is transmitted to the housing 2 .
- the conventional technique disclosed in Patent Document 1 in which the inner periphery of the housing and the outer periphery of the outer sleeve are engaged in the radial direction of the one-way clutch, limits the reduction in the radial thickness of the outer sleeve.
- the internal unit 5 stored in the storage portion 2a of the housing 2 is restricted from moving to the one end side of the storage portion 2a by the restriction wall 2b formed on the one end side of the storage portion 2a.
- the cap 6 by fitting the cap 6 to the insertion opening 2c of the internal unit 5 into the storage section 2a, which opens at the other end side of the storage section 2a, the internal unit 5 is restricted from deviating from the insertion opening 2c. be. Therefore, unlike the conventional one-way clutch disclosed in Japanese Unexamined Patent Application Publication No. 2002-200000, there is no need to perform an assembly work of fitting a pair of retaining rings on the shaft in order to prevent the internal unit 5 from coming out of the shaft 7. , the labor of the assembly work is reduced.
- the engaged portions 3e are formed by chipping the connecting portions 3b from the end surfaces 3f of the connecting portions 3b in the axial direction at a plurality of locations by a predetermined length L2.
- the connecting portion 3b becomes flexible in a direction crossing the axial direction of the housing 2.
- the coupling portion 3b is elastically deformed by the stress and absorbs the stress, thereby preventing the needle roller 8 from skewing or slipping. It is possible to prevent poor engagement of the needle roller 8 during the locking operation of the one-way clutch 1 and poor rolling during the idling operation.
- the length L3 of the coupling portion 3b is formed longer than the length L2 of the engaged portion 3e (L3>L2), so that the coupling portion of the retainer 3 The part strength of the portion 3b can be maintained. Therefore, the engaged portion 3e formed on the connecting portion 3b firmly engages with the engaging portion 2f formed on the inner circumference of the housing 2, and the rotation of the retainer 3 is reliably transmitted to the housing 2. . In addition, the retainer 3 can be reliably positioned with respect to the housing 2 .
- the one-way clutch 1 of the present embodiment when the engaged portion 3e and the engaging portion 2f are engaged with each other, a gap s is created between the end surface 3f of the connecting portion 3b and the restricting wall 2b. Therefore, when the engaged portion 3e and the engaging portion 2f are engaged with each other (L1 ⁇ L2), the end surface 3f of the connecting portion 3b and the restricting wall 2b do not come into contact with each other. Therefore, it is possible to prevent each part from being damaged due to the contact between the end surface 3f of the coupling portion 3b and the regulation wall 2b.
- the length L3 by which the coupling portion 3b extends from the end surface 3g is set to be equal to or greater than the length L4 by which each columnar portion 3a projects from the end surface 3g (L3 ⁇ Because of L4), the rotation of the retainer 3 in the storage portion 2a is stabilized, and the rotation is smoothly transmitted from the retainer 3 to the housing 2.
- the retainer 3 will not move.
- the positional relationship between the columnar portion 3a and the wedge surface 4c of the inner wall surface of the outer sleeve 4 is changed. If there is a change in the positional relationship between the columnar portion 3a and the wedge surface 4c, when the unidirectional rotation of the shaft 7 is transmitted to the housing 2, the needle roller 8 housed in the pocket portion 5a contacts the wedge surface 4c. , may collide with and come into contact with the columnar portion 3a.
- the needle roller 8 is obstructed by the columnar portion 3a, and the locking operation of engaging between the wedge surface 4c and the outer circumference of the shaft 7 is hindered, and the unidirectional rotation of the shaft 7 is not transmitted to the housing 2.
- the side periphery of the prismatic rising portion 3h of each columnar portion 3a abuts against the rectangular inner wall surface 4d of the outer sleeve 4 so that the retainer 3 is held by the outer sleeve 4.
- the retainer 3 and the outer sleeve 4 By press-fitting the retainer 3 and the outer sleeve 4, no gap is generated between the fixing portions of the retainer 3 and the outer sleeve 4, so that the mutual rotation positions of the retainer 3 and the outer sleeve 4 do not shift.
- the positional relationship between the columnar portion 3a and the wedge surface 4c is maintained at the initially set position and does not change, and the locking operation in which the needle roller 8 is engaged between the wedge surface 4c and the outer circumference of the shaft 7 is a columnar shape. It is no longer disturbed by the part 3a. Therefore, the unidirectional rotation of the shaft 7 is reliably transmitted to the housing 2 by the locking operation in which the needle roller 8 is engaged between the wedge surface 4c and the outer circumference of the shaft 7. As shown in FIG.
- the shaft 7 is provided in the inner diameter portion 3d formed in the pedestal 3c of the retainer 3 and in the housing 2 on the side opposite to the side on which the cap 6 of the storage portion 2a is provided.
- the inner diameter portion 2e provided on the cap 6 and the inner diameter portion 6a provided on the cap 6 are inserted to support the rotation. Therefore, the shaft 7 rotates stably without shaking.
- the outer circumferential surface of the outer sleeve 4 has a shape in which the arcuate surfaces 4a and the flat surfaces 4b are alternately arranged, when the one-way clutch 1 is automatically assembled, Positioning of the outer sleeve 4 can be easily performed.
- the engaging portion 2f is formed to protrude in the inner circumference of the storage portion 2a in the axial direction, and the engaged portion 3e is formed so as to be axially lacking in the coupling portion 3b.
- the engaging portion 2f and the engaged portion 3e engage in the axial direction has been described.
- the engaging portion 2f is formed in the reduced diameter inner circumference of the housing 2 aligned with the storage portion 2a so as to be cut away in the axial direction of the housing 2, and the engaged portion 3e is the connecting portion.
- the engaging portion 2f and the engaged portion 3e may be configured to extend in the axial direction of the housing 2 from the end surface 3f of the housing 2 so as to engage with each other in the axial direction of the housing 2.
- FIG. Such a configuration also provides the same effects as those of the above-described embodiment.
- the cushioning portion configured by the coupling portion 3b has been described with respect to the case where the coupling portion 3b is divided into C-shaped islands as shown in FIG. 5(a).
- the cylindrical connecting portion 3b may be simply divided in the circumferential direction by the connected portion 3e, and the circular arc walls may be erected on the pedestal 3c at predetermined intervals. With such a configuration, the stress applied to the housing 2 is absorbed by the cushioning portion, and the same effects as those of the above-described embodiment are exhibited.
- outer sleeve 4 has been described as having a shape in which the arcuate surfaces 4a and the flat surfaces 4b are alternately arranged on the outer peripheral surface, but the outer sleeve 4 may have a simple cylindrical shape.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
Description
台座に形成された内径部に挿通される軸を囲む周方向に台座に所定間隔をあけて柱状部が複数立設された保持器と、
台座に立設された各柱状部の側周囲を内周部が囲む中空円筒状のアウタースリーブと、
隣接する柱状部間でアウタースリーブの内壁面と軸の外周とに挟まれて形成されるポケット部に転動自在に保持される円柱状の転動体と、
ポケット部において隣接する柱状部のうちの一方の柱状部側に転動体を付勢する弾性部材と、
保持器およびアウタースリーブの外周を覆い、ポケット部における転動体の転動位置に応じて軸の一方向の回転が伝達されるハウジングとを備えて構成される一方向クラッチにおいて、
保持器は、各柱状部が立設される側と反対側における台座に、被係合部が設けられた結合部が軸を囲む円筒状に延出して形成され、結合部の外周がアウタースリーブの外周に並んでアウタースリーブと同軸にハウジング内に配置され、
ハウジングは、保持器およびアウタースリーブの並ぶ各外周を覆う内径の収納部を有し、軸心方向において被係合部と係合して保持器の回転をハウジングに伝達する係合部が内周に形成され、保持器およびアウタースリーブが軸心方向における収納部の一端側へ移動するのを規制する規制壁が収納部の一端側に結合部の端面に対向して形成され、軸心方向における収納部の他端側に開口する、保持器およびアウタースリーブの収納部への挿入口に、保持器およびアウタースリーブの挿入口からの逸脱を規制するキャップが嵌合することを特徴とする。
Claims (7)
- 台座に形成された内径部に挿通される軸を囲む周方向に前記台座に所定間隔をあけて柱状部が複数立設された保持器と、
前記台座に立設された各前記柱状部の側周囲を内周部が囲む中空円筒状のアウタースリーブと、
隣接する前記柱状部間で前記アウタースリーブの内壁面と前記軸の外周とに挟まれて形成されるポケット部に転動自在に保持される円柱状の転動体と、
前記ポケット部において隣接する前記柱状部のうちの一方の前記柱状部側に前記転動体を付勢する弾性部材と、
前記保持器および前記アウタースリーブの外周を覆い、前記ポケット部における前記転動体の転動位置に応じて前記軸の一方向の回転が伝達されるハウジングとを
備えて構成される一方向クラッチにおいて、
前記保持器は、各前記柱状部が立設される側と反対側における前記台座に、被係合部が設けられた結合部が前記軸を囲む円筒状に延出して形成され、前記結合部の外周が前記アウタースリーブの外周に並んで前記アウタースリーブと同軸に前記ハウジング内に配置され、
前記ハウジングは、前記保持器および前記アウタースリーブの並ぶ各外周を覆う内径の収納部を有し、軸心方向において前記被係合部と係合して前記保持器の回転を前記ハウジングに伝達する係合部が内周に形成され、前記保持器および前記アウタースリーブが前記軸心方向における前記収納部の一端側へ移動するのを規制する規制壁が前記収納部の一端側に前記結合部の端面に対向して形成され、前記軸心方向における前記収納部の他端側に開口する、前記保持器および前記アウタースリーブの前記収納部への挿入口に、前記保持器および前記アウタースリーブの前記挿入口からの逸脱を規制するキャップが嵌合する
ことを特徴とする一方向クラッチ。 - 前記保持器は、前記結合部が複数箇所において前記軸心方向に前記結合部の端面から所定長さで欠かれることで前記被係合部が形成されることを特徴とする請求項1に記載の一方向クラッチ。
- 前記保持器は、前記柱状部が立設する前記台座の端面から前記結合部が延出する長さが前記被係合部の所定長さより長く設定されることを特徴とする請求項2に記載の一方向クラッチ。
- 前記被係合部および前記係合部は、互いに係合したときに前記結合部の端面と前記規制壁との間に隙間が生じる長さに設定されることを特徴とする請求項1から請求項3のいずれか1項に記載の一方向クラッチ。
- 前記保持器は、各前記柱状部の前記台座からの立ち上がり部における角柱状をした側周囲に前記アウタースリーブの矩形状内壁面が当接して前記アウタースリーブに圧入されることで、前記アウタースリーブに固定されることを特徴とする請求項1から請求項4のいずれか1項に記載の一方向クラッチ。
- 前記キャップは前記軸が挿通される内径部を有し、
前記ハウジングは、前記収納部の前記キャップが嵌合する側と反対側に前記軸が挿通される内径部を有することを特徴とする請求項1から請求項5のいずれか1項に記載の一方向クラッチ。 - 前記アウタースリーブは、その外周面が円弧面と平面とが交互に配置された形状をしていることを特徴とする請求項1から請求項6のいずれか1項に記載の一方向クラッチ。
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CN202280008658.XA CN116670405A (zh) | 2021-02-19 | 2022-02-17 | 单向离合器 |
JP2023500914A JPWO2022176935A1 (ja) | 2021-02-19 | 2022-02-17 |
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PCT/JP2022/006312 WO2022176935A1 (ja) | 2021-02-19 | 2022-02-17 | 一方向クラッチ |
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JP (1) | JPWO2022176935A1 (ja) |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312227A (ja) * | 1992-05-11 | 1993-11-22 | Ntn Corp | トルクリミッタ |
US6308811B1 (en) * | 1999-02-24 | 2001-10-30 | Chun-Hsiung Chang | Method of side transmission through unidirectional clutch and the clutch for such purpose |
JP2002295521A (ja) * | 2001-03-29 | 2002-10-09 | Ntn Corp | 一方向クラッチ |
JP2010242889A (ja) * | 2009-04-07 | 2010-10-28 | Ntn Corp | 一方向クラッチ |
-
2022
- 2022-02-17 JP JP2023500914A patent/JPWO2022176935A1/ja active Pending
- 2022-02-17 WO PCT/JP2022/006312 patent/WO2022176935A1/ja active Application Filing
- 2022-02-17 CN CN202280008658.XA patent/CN116670405A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05312227A (ja) * | 1992-05-11 | 1993-11-22 | Ntn Corp | トルクリミッタ |
US6308811B1 (en) * | 1999-02-24 | 2001-10-30 | Chun-Hsiung Chang | Method of side transmission through unidirectional clutch and the clutch for such purpose |
JP2002295521A (ja) * | 2001-03-29 | 2002-10-09 | Ntn Corp | 一方向クラッチ |
JP2010242889A (ja) * | 2009-04-07 | 2010-10-28 | Ntn Corp | 一方向クラッチ |
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CN116670405A (zh) | 2023-08-29 |
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