WO2004063589A1 - 一方向クラッチ用スプリング - Google Patents
一方向クラッチ用スプリング Download PDFInfo
- Publication number
- WO2004063589A1 WO2004063589A1 PCT/JP2004/000132 JP2004000132W WO2004063589A1 WO 2004063589 A1 WO2004063589 A1 WO 2004063589A1 JP 2004000132 W JP2004000132 W JP 2004000132W WO 2004063589 A1 WO2004063589 A1 WO 2004063589A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spring
- way clutch
- bent
- annular space
- claw
- Prior art date
Links
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
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
- F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
-
- 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
-
- 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
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
-
- 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
- F16D2041/0605—Spring details
Definitions
- the present invention provides an engagement mechanism that is disposed between an inner ring and an outer ring to perform a wedge action to transmit power between the inner and outer rings, release the wedge action, and cut off transmission of power between the inner and outer rings. Equipped,
- the present invention relates to a spring used in a one-way clutch for biasing, and more particularly to a one-way clutch spring capable of reducing a drag torque (friction torque) of the engaging member generated when the power of the one-way clutch is cut off.
- FIG. 6 (A) is a partial cross-sectional view of a one-way clutch composed of a retainer 3, a spring (ribbon spring) 16 and a sprag 5 with an engagement sound
- Fig. 6 (B) FIG. 6 is an enlarged view of a portion R in FIG. 6 (A).
- the retainer 3 in order to synchronize the retainer 3 and the rotation of the outer ring, the retainer 3 is provided with, for example, a flange portion extending in the radial direction (not shown) so as to have an interference, and press-fit the outer ring 1.
- the engaging member 5 hereinafter, referred to as sprag 5
- sprag 5 is fixed in the circumferential direction by the spring 16 It is arranged in the pocket 16 p provided at the interval, and is urged in the engagement direction (wedge action direction) by the claw portion 16 c provided in the spring 16.
- FIG. 7 is a partial perspective view of the spring 16, FIG.
- FIG. 8 (A) is a plan view of the spring 16 developed in the circumferential direction
- FIG. 8 (B) is FIG. 8 (A).
- Fig. 3 is a cross-sectional view taken along the line A-A of Fig. 1, and is a partial cross-sectional view of a state in which the sprags 5 are not actually disposed in the one-way clutch.
- the spring 16 is made of a thin metal plate material (for example, stainless steel). When the spring 16 is assembled by press working, the spring 16 has an annular section 16a, 16a, and an annular section 16a and an annular section 16a.
- the connecting columns 16b, 16b, ⁇ and these 3 ⁇ 4 (the pockets 16 ⁇ , 16 ⁇ , ⁇ formed between the main sections 16a, 16a and the columns 16b and provided at regular intervals in the circumferential direction) Claws 16c, 16c, ... extending from the center of the pillar 16b in the pocket direction are formed in this case.
- Part 16 c Force It is known from «to have a claw part 16 c that is bent inward in advance (see Japanese Utility Model Application No. 2-76234).
- the claw portion 16c is formed with three meandering bent portions (16d, 16e, 16f) forces S from the bottom of the column portion 16b.
- the height d 2 of the tip of the claw 16 c to the SI head 16 a is usually equal to the Sf head of the second meandering bent part 16 e. in the state where and biasing the sprag 5 smaller than the volume of up to 6 a base portion 16 the height d 2 to a tip portion of the claw portion 16 c is etc. is made larger.
- the present invention has been made in order to solve the above-described problems, and provides a spring for a one-way clutch which has good engagement performance and can reduce a drag torque (friction torque) considerably as compared with the conventional spring. It is intended to be. Disclosure of the invention
- the present invention is directed to an aspect of the present invention, in which an engagement sound attachment is arranged in a pocket arranged in an annular space between an outer ring and an inner ring and provided at a constant interval in a circumferential direction,
- a one-way clutch spring having a pawl extending into the pocket and biasing the engagement member toward the engagement side;
- the claw portion extending into the pocket has a bent portion that is bent inward to the inside side before being arranged in the annular space, and a possible angle of the main portion is 20 ° to 30 °. ° is provided.
- the claw portion extending into the pocket has an angle at which the claw portion serving as a main portion when biasing the engaging member arranged in the annular space is arranged in the annular space. (Because it has a spring constant in a range that increases from 5 ° to 15 ° more than the inclination angle that forms the headquarters, it is bent inward to the inner side before Things.
- the invention according to claim 3 is characterized in that the engaging member is arranged in a pocket arranged in the annular space between the outer ring and the inner ring and provided at a constant interval in the circumferential direction, In a one-way clutch spring having a claw for urging an engaging member toward an engaging side,
- the center of curvature is a meandering bent portion in which the inner ring is in a healthy position with respect to the ring-shaped head portion forming the spring.
- the height of the tip relative to the ⁇ ⁇ headquarters is formed to be greater than the height of the top of the disgusting second bent part relative to the headquarters,
- the curvature radius of each of the three bent portions is in a range of 0.2 mm to 0.6 mm.
- the height of the crest to the base part depends on the magnitude of the urging force of the claws to the sprags and the magnitude of the bowing torque generated between the sprags and the inner and outer rings when the power is transmitted and cut off between the inner and outer rings. Involved.
- the force for urging the sprags is not weakened, and the drag torque that does not cause the wedge action of the sprags and the poor connection when using the wedges while touching them is reduced. It can be smaller than before.
- FIG. 1 shows a one-way clutch using a one-way clutch spring of the present invention.
- FIG. 1 (A) is a partial cross-sectional view
- FIG. 1 (B) is an enlarged view of a portion P in FIG. 1 (A).
- FIG. 2 is a view showing the one-way clutch spring of the present invention taken out.
- FIG. 2 (A) is a partial front view
- FIG. 2 (B) is a W arrow in FIG. 2 (A).
- Fig. 2 (C) is a plan view
- FIG. 3 is a diagram showing various angles formed by a claw portion extending in the direction of a pocket portion of the one-way clutch spring and a main portion thereof.
- FIG. 4 is a view showing an inclination angle formed between the claw portion and the »f head portion before the sprag is arranged in the pocket portion of the one-way clutch spring and when the arranged sprag is urged.
- FIG. 5 is a diagram showing an embodiment of the present invention, and is an enlarged view of a portion Q in FIG. 2 (A).
- FIG. 6 shows a conventional one-way clutch composed of a retainer, a spring, and a sprag which is an engaging member.
- FIG. 6 (A) is a partial cross-sectional view thereof, and FIG. FIG. 6 is an enlarged view of a portion R in FIG. 6 (A).
- FIG. 7 is a partial perspective view of a spring used in a conventional one-way clutch.
- FIG. 8 is a view of a conventional spring used in a one-way clutch.
- FIG. 8 (A) is a plan view developed in a circumferential direction
- FIG. 8 (B) is a view of FIG. 8 (A).
- FIG. 2 is a sectional view taken along the line A-A of FIG. Fig. 9 is a diagram showing " ⁇ " of the spring in a state where the sprags are not set at # 3, and showing the R portion of Fig. 6 (A).
- FIG. 1 (A) is a partial cross-sectional view of a one-way clutch using the one-way clutch spring of the present invention
- FIG. 1 (B) is an enlarged view of a part P in FIG. 1 (A).
- the one-way clutch is provided in a retainer 3 disposed in an annular space 4 between the outer ring 1 and the inner ring 2, and in pockets 3 p, 3 p,.
- the one-way clutch spring 6 (hereinafter simply referred to as spring 6) that holds the sprags 5, 5, )
- FIG. 2 (A) is a partial front view showing a state where the sprags 5 are taken out and a spring 6 is arranged
- FIG. 2 (B) is a partial plan view taken along the arrow W in FIG. 2 (A).
- FIG. 2 (C) is an enlarged view of a portion Q in FIG. 2 (A).
- the spring 6 has an annular shape when it is disposed on the annular portion 4. 3 ⁇ 4 ⁇ Heads 6a, 6a; pillars 6b connecting the bases 6a, 6a; A pocket 6 p formed by 6 a and the column portion 6 b, and a claw portion 6 extending from the 3 ⁇ 4tt portion 6 b to the pocket portion 6 p. And.
- a cage (not shown) may be provided inside in addition to the cage 3.
- the structure of the knitting self-spring 6 is basically the same as that shown in FIGS. 5 to 7, and when the sprags 5, 5, The pawl portions 6c, 6c, ... extending in 6p are urged in the engaging direction.
- the claw portions 6 c extending into the pockets 6 p are formed by smooth bending portions 6 d, 6 e, 6 f previously bent at the base end of the column portion 6 b before being arranged in the annular space 4. It is formed so as to have an initial bending angle ⁇ force to be formed with the annular base portion 6a at the same time as T, 25 ° soil 5 °, that is, 20 ° to 30 °.
- the pawl portions 6c of the springs 6 for urging the sprags 5 form the smooth meandering bent portions 6d, 6e, and 6f, and the pockets 6 are formed with the angle of inclination ⁇ in the above range.
- the displacement angle r when the plug 5 invades the claw 6c is determined. If the spring constant is set as follows, the sprag 5 is subjected to 3 ⁇ 4E biasing force, and power is transmitted and cut off between the outer ring 1 and the inner ring 2! The drag torque of ⁇ can be reduced.
- the funnel angle ⁇ formed by the main part 6a and the claw part 6c due to the infestation of the sublag 5 gives the displacement angle to the oblique angle when the sprag 5 does not insect. So that the spring constant of the claw portion 6c increases in the range of 5 ° to 15 ° from the range of 20 ° to 30 °. To the extent that it does.
- the inclination angle ⁇ between the main part 6a and the claw part 6c is in the range of 5 ° to 15 °.
- the spring 6 is provided with a spring constant such that the displacement angle ⁇ of the claw 6 c of the spring 6 in which the sprags 5 are arranged is in the range of 15 ° to 25 °. Hot
- the angle of the bevel (0! + A) shown by the two-dot chain line in this Part 4 diagram is the value obtained when the sprag 15 shown in Figure 6 ( ⁇ ) and ( ⁇ ) comes into contact with the force claw 16c. Same as angle.
- FIG. 3 shows various angles formed by the claw portions 6c extending in the direction of the pocket portions 6 ⁇ of the one-way clutch spring 6 with respect to the 3 ⁇ 4 ⁇ head portion 6a.
- the idling torque is the drag torque during idling, and the "idling torque ratio" is 1 when the claw displacement angle is 20 ° ⁇ 5 ° and the initial claw bending angle is 10 ° Soil 5 ° It is the ratio of time.
- the spring constant was set so that the initial bending angle of the claw 6c was 5 ° or less and the displacement angle of the claw 6c when the sprag 5 was urged was 25 ° or more.
- the bowing torque is larger than that of the conventional one, and when the initial bending angle is 30 ° or more and the displacement angle of the claw 6c when biasing the sprag 5 is set to 5 ° or less, As for the drag torque, when the conventional one was set to 1, it was 0.4 or less. However, in each case, an abnormality occurred before the standard.
- the “criterion” in this case is, for example, 1 million repetitions of one 3 ⁇ 42 Means the number of repetitions required by the user, but the initial bending angle of the claw 6c Degree, five.
- the displacement angle of the part 6c is 15 ° to 25 °.
- the degree of spring constant was set, it was a standard of grace.
- the initial bending angle of the claw portion 6c is set to 20 ° to 25 °, and the displacement angle of the claw portion 6c when biasing the sprag 5 is about 5 ° to 15 °.
- the drag torque was smaller than that of the conventional one, and there was no problem with the transmission and shutoff of power accompanying the engagement and disengagement of the sprag 5.
- FIG. 5 is an enlarged view of a portion Q in FIG. 2 (A).
- the claw portion 6 c extending into the knitting pocket 6 p is bent inward beforehand on the base of the column portion 6 b before the sprags 5, 5, ′ are placed in the annular space 4. It has a smooth meandering bent portion. That is, the claw portion 6 has a force formed of a first bent portion 6d, a second bent portion 6e, and a third bent portion 6f when viewed from the column portion 6b.
- these bends (6d, 6e, 6f) have the center of curvature (Od, ⁇ e, Of) at the center of the inner ring 2 with respect to the 3 ⁇ 4 ⁇ of the ring that constitutes the spring. It is in. Then, the claw portion 6 tip 3 ⁇ 4 of c (headquarters 6 height h 2 with respect to a, are bent so as to be larger than the height against the 3 ⁇ 4 ⁇ headquarters the top of the second bent portion 6 e.
- the radius of curvature R of each of the three bent portions (6d, 6e, 6f) is in the range of 0.2 mm to 0.6 mm. That is, as a result of the experiment, when the radius of curvature of these bends (6d, 6e, 6f) is made larger than the value in this range, the spring constant of the claw 6 becomes smaller, and the force for urging the sprag 5 And the drag torque increases. On the other hand, if the radius of curvature of these bent portions (6d, 6e, 6f) is smaller than the value in this range, the spring constant of the claw portion 6c increases, and the force for urging the sprag 5 increases. However, it was found that the drag torque also increased. Industrial applicability
- a reduction in drag torque of 40% to 60% is realized in a region where the drag torque of a normal design product is normally ⁇ ffl. can do.
- the drag torque can be reduced by 30% in comparison with the conventional spring in which the sprag is arranged. . Also, there is no problem with the engagement and disengagement of sprags, etc.No change in the mold for processing the claw part of the claw bending R part without losing the durability, which may lead to an excessive increase in cost. There is no.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Clamps And Clips (AREA)
- Springs (AREA)
- Mechanical Operated Clutches (AREA)
- Power Steering Mechanism (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602004010064T DE602004010064T2 (de) | 2003-01-09 | 2004-01-09 | Freilaufkupplungsfeder |
EP04701118A EP1584831B1 (en) | 2003-01-09 | 2004-01-09 | One-way clutch spring |
US10/541,682 US7389864B2 (en) | 2003-01-09 | 2004-01-09 | One-way clutch spring |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003003630A JP2004263705A (ja) | 2003-01-09 | 2003-01-09 | 一方向クラッチ用スプリング |
JP2003-003630 | 2003-01-09 | ||
JP2003007826A JP2004263709A (ja) | 2003-01-16 | 2003-01-16 | 一方向クラッチ用スプリング |
JP2003-007826 | 2003-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004063589A1 true WO2004063589A1 (ja) | 2004-07-29 |
Family
ID=32716378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/000132 WO2004063589A1 (ja) | 2003-01-09 | 2004-01-09 | 一方向クラッチ用スプリング |
Country Status (5)
Country | Link |
---|---|
US (1) | US7389864B2 (ja) |
EP (1) | EP1584831B1 (ja) |
KR (1) | KR20050086958A (ja) |
DE (1) | DE602004010064T2 (ja) |
WO (1) | WO2004063589A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112324816A (zh) * | 2020-11-06 | 2021-02-05 | 洛阳轴承研究所有限公司 | 一种斜撑式超越离合器 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005046896A1 (de) * | 2005-09-30 | 2007-04-05 | Schaeffler Kg | Freilaufkupplung |
EP1921339B1 (de) * | 2006-11-09 | 2014-06-18 | Paul Müller GmbH & Co. KG Unternehmensbeteiligungen | Freilauf mit Bandelement |
WO2011134450A1 (de) * | 2010-04-29 | 2011-11-03 | Schaeffler Technologies Gmbh & Co. Kg | Freilauf, insbesondere für ein kurbel-cvt-getriebe |
US9885394B2 (en) | 2014-05-05 | 2018-02-06 | Lifetime Brands, Inc. | Handle for kitchen devices |
EP3299653B1 (en) | 2016-09-23 | 2020-11-25 | Volvo Car Corporation | Decoupler assembly |
DE112018000740T5 (de) * | 2017-03-08 | 2019-10-17 | Borgwarner Inc. | Sperrklinkenkupplung mit sperrklinken-abweisungsmerkmal |
US10738842B2 (en) * | 2018-12-07 | 2020-08-11 | Schaeffler Technologies AG & Co. KG | Clutch assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0276234U (ja) * | 1988-11-29 | 1990-06-12 | ||
JPH0586044U (ja) * | 1992-04-23 | 1993-11-19 | エヌティエヌ株式会社 | 一方向クラッチ用リボンスプリング |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1132390B (de) * | 1957-03-25 | 1962-06-28 | Borg Warner | Freilaufkupplung |
FR2610378B1 (fr) * | 1987-01-29 | 1989-08-18 | Skf France | Dispositif de roue libre a cames de coincement |
JP2504134B2 (ja) | 1988-09-12 | 1996-06-05 | 日本電気株式会社 | 多結晶粒界のトラップ準位濃度の測定方法 |
JP3009810B2 (ja) * | 1993-09-30 | 2000-02-14 | 光洋精工株式会社 | 一方向クラッチ用リボンスプリングの製造方法 |
US6892868B2 (en) * | 2001-07-05 | 2005-05-17 | Koyo Seiko Co., Ltd. | One-way clutch |
-
2004
- 2004-01-09 KR KR1020057012706A patent/KR20050086958A/ko not_active Application Discontinuation
- 2004-01-09 WO PCT/JP2004/000132 patent/WO2004063589A1/ja active IP Right Grant
- 2004-01-09 DE DE602004010064T patent/DE602004010064T2/de not_active Expired - Lifetime
- 2004-01-09 EP EP04701118A patent/EP1584831B1/en not_active Expired - Lifetime
- 2004-01-09 US US10/541,682 patent/US7389864B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0276234U (ja) * | 1988-11-29 | 1990-06-12 | ||
JPH0586044U (ja) * | 1992-04-23 | 1993-11-19 | エヌティエヌ株式会社 | 一方向クラッチ用リボンスプリング |
Non-Patent Citations (3)
Title |
---|
"Bane dai 3 han dai 4 satsu", 1995, JAPAN SOCIETY FOR SPRING RESEARCH, MARUZEN, pages: 292-303 - 317-320, XP002903795 * |
CHESNEY DAVID R. ET AL.: "Generalized equations for sprag one-way clutch analysis and design", SAE SPECIAL PUBLICATION - 1324 TRANSMISSION AND DRIVELINE SYSTEMS SYMPOSIUM 1998, THE SOCIETY OF AUTOMOTIVE ENGINEERS, 1998, pages 173 - 184, XP002903794 * |
See also references of EP1584831A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112324816A (zh) * | 2020-11-06 | 2021-02-05 | 洛阳轴承研究所有限公司 | 一种斜撑式超越离合器 |
CN112324816B (zh) * | 2020-11-06 | 2022-01-21 | 洛阳轴承研究所有限公司 | 一种斜撑式超越离合器 |
Also Published As
Publication number | Publication date |
---|---|
US20060118379A1 (en) | 2006-06-08 |
DE602004010064D1 (de) | 2007-12-27 |
KR20050086958A (ko) | 2005-08-30 |
EP1584831A4 (en) | 2006-04-12 |
EP1584831A1 (en) | 2005-10-12 |
US7389864B2 (en) | 2008-06-24 |
DE602004010064T2 (de) | 2008-09-11 |
EP1584831B1 (en) | 2007-11-14 |
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