JP7458712B2 - 固定式等速自在継手 - Google Patents
固定式等速自在継手 Download PDFInfo
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- JP7458712B2 JP7458712B2 JP2019072801A JP2019072801A JP7458712B2 JP 7458712 B2 JP7458712 B2 JP 7458712B2 JP 2019072801 A JP2019072801 A JP 2019072801A JP 2019072801 A JP2019072801 A JP 2019072801A JP 7458712 B2 JP7458712 B2 JP 7458712B2
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- track groove
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- constant velocity
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- 230000005540 biological transmission Effects 0.000 claims description 52
- 230000002093 peripheral effect Effects 0.000 description 18
- 230000007423 decrease Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 229910003298 Ni-Ni Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 208000018883 loss of balance Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/224—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
-
- 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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/2237—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/22309—Details of grooves
-
- 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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/224—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere
- F16D3/2245—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a sphere where the groove centres are offset from the joint centre
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
- Y10S464/904—Homokinetic coupling
- Y10S464/906—Torque transmitted via radially spaced balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
- Pivots And Pivotal Connections (AREA)
Description
(1)ボールが接触点を失った場合の継手内の力のバランスの崩れ
固定式等速自在継手において従来の作動角(50°)を超える高作動角で使用される場合、前述したように、外側継手部材のトラック溝が短くなり、位相角0°付近のボールはトラック溝から外れて接触点を失うことになる。そして、ボールがトラック溝との接触点を失う位相範囲では、ボールと外側継手部材のトラック溝および内側継手部材のトラック溝との接触力や、ボールから保持器に作用する力が失われることになり、他のボールでその荷重を受け持つことになり、内部の力のバランスが崩れる。特に、トラック溝の曲率中心が軸方向にオフセットした(以下、軸方向トラックオフセットタイプともいう)ツェッパ型等速自在継手(BJタイプ)やアンダーカットフリー型等速自在継手(UJタイプ)では、等速自在継手内の力のバランスが大きく崩れてしまうことが判明した。
軸方向トラックオフセットタイプの固定式等速自在継手は、外側継手部材のトラック溝の曲率中心が継手中心Oに対して外側継手部材の開口側にオフセットし、一方、内側継手部材のトラック溝の曲率中心は、外側継手部材のトラック溝の曲率中心とは逆方向にオフセットしており、ボールは、外側継手部材のトラック溝と内側継手部材のトラック溝との間に形成される開口側に開く楔状空間に配置され、保持器によって位置決めされる。
上記の考察結果より、ボールから保持器に作用する力のバランスに優れた交差トラック溝タイプの固定式等速自在継手に着目した。交差トラック溝タイプの固定式等速自在継手は、外側継手部材のトラック溝が軸方向にオフセットがない曲率中心をもつ円弧状で形成され、かつ継手の軸線に対して周方向に傾斜すると共に、隣り合うトラック溝間で互いに傾斜方向が逆方向に形成されており、内側継手部材のトラック溝の軌道中心線が、外側継手部材のトラック溝の軌道中心線に対して鏡像対称であり、外側継手部材のトラック溝と内側継手部材のトラック溝の間の交差部にボールが配置される。
最大作動角が従来の作動角(50°)を超える角度に設定され、高作動角を取った際に、ボールが外側継手部材から出てくる位相角(位相角0°付近)で接触点を失う作動形態の固定式等速自在継手として、交差トラック溝タイプの固定式等速自在継手をベースとすることに到達した後、種々検討した結果、交差トラック溝タイプの固定式等速自在継手においてボールが接触点を失う状態下で、保持器に対してボールが外径方向に押し出される移動量を抑制することにより、保持器からのボールの脱落を防止するという着想と共に、ボールが外側継手部材のトラック溝に戻る際の内部力の増大を抑え外側継手部材の開口側端部の損傷を抑制するという着想により、本発明に至った。
(1)交差トラック溝タイプの固定式等速自在継手において、最大作動角を取ったときにボールが接触点を失う作動形態を実現したことである。
(2)加えて、大きな作動角を取ったときに、内側継手部材3のトラック溝9とボール4とが接触点を失う作動角θ2を、外側継手部材2のトラック溝7とボール4とが接触点を失う作動角θ1より大きく設定したことである。
2 外側継手部材
3 内側継手部材
3a 端部
4 トルク伝達ボール
5 保持器
5a ポケット
6 球状内周面
7 トラック溝
7a 第1のトラック溝部
7b 第2のトラック溝部
8 球状外周面
9 トラック溝
9a 第1のトラック溝部
9b 第2のトラック溝部
12 球状外周面
13 球状内周面
20 入口チャンファ
CLo 接触点軌跡
CLi 接触点軌跡
M 平面
N 継手の軸線
O 継手中心
Ob ボールの中心
P 平面
Q 平面
W 間隔
X 軌道中心線
Xa 軌道中心線
Xb 軌道中心線
Y 軌道中心線
Ya 軌道中心線
Yb 軌道中心線
θmax 最大作動角
θ1 接触点を失う作動角
θ2 接触点を失う作動角
φ0 位相角
φ1 位相角
φ2 位相角
Claims (4)
- 球状内周面に概ね軸方向に延びる複数のトラック溝が形成され、軸方向に離間する開口側と奥側を有する外側継手部材と、球状外周面に概ね軸方向に延びる複数のトラック溝が前記外側継手部材のトラック溝に対向して形成された内側継手部材と、対向する各トラック溝間に組込まれたトルク伝達ボールと、このトルク伝達ボールをポケットに保持し、前記外側継手部材の球状内周面に案内される球状外周面と前記内側継手部材の球状外周面に案内される球状内周面が形成された保持器とからなる固定式等速自在継手であって、前記外側継手部材のトラック溝の軌道中心線(X)は、継手中心(O)に対して軸方向にオフセットのない曲率中心をもつ円弧状部分と、この円弧状部分とは異なる形状の部分とからなり、前記異なる形状の部分が直線状であり、前記円弧状部分と前記異なる形状の部分とが接続点(J)において接線として接続し、前記接続点(J)が、前記継手中心(O)より前記外側継手部材の開口側に位置し、前記軌道中心線(X)と継手中心(O)を含む平面(M)が継手の軸線(N-N)に対して傾斜すると共に、その傾斜方向が周方向に隣り合う前記トラック溝で互いに反対方向に形成されており、前記内側継手部材のトラック溝の軌道中心線(Y)は、作動角0°の状態で継手中心(O)を含み継手の軸線(N-N)に直交する平面(P)を基準として、前記外側継手部材の対となるトラック溝の軌道中心線(X)と鏡像対称に形成された固定式等速自在継手において、
大きな作動角を取ったときに、前記内側継手部材のトラック溝と前記トルク伝達ボールとが接触点を失う作動角(θ2)が、前記外側継手部材のトラック溝と前記トルク伝達ボールとが接触点を失う作動角(θ1)より大きいことを特徴とする固定式等速自在継手。 - 前記内側継手部材のトラック溝と前記トルク伝達ボールとが接触点を失う作動角(θ2)が、前記外側継手部材のトラック溝と前記トルク伝達ボールとが接触点を失う作動角(θ1)より3°以上大きいことを特徴とする請求項1に記載の固定式等速自在継手。
- 前記内側継手部材のトラック溝と前記トルク伝達ボールとが接触点を失う作動角(θ2)の上限を、前記トルク伝達ボールが前記保持器のポケットと接触点が確保できる値としたことを特徴とする請求項1又は請求項2に記載の固定式等速自在継手。
- 前記トルク伝達ボールの個数を8個以上としたことを特徴とする請求項1~3のいずれ
か一項に記載の固定式等速自在継手。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019072801A JP7458712B2 (ja) | 2019-04-05 | 2019-04-05 | 固定式等速自在継手 |
CN202080026424.9A CN113661337A (zh) | 2019-04-05 | 2020-03-16 | 固定式等速万向联轴器 |
US17/599,770 US20220056960A1 (en) | 2019-04-05 | 2020-03-16 | Fixed type constant velocity universal joint |
PCT/JP2020/011404 WO2020203215A1 (ja) | 2019-04-05 | 2020-03-16 | 固定式等速自在継手 |
EP20785388.8A EP3951202B1 (en) | 2019-04-05 | 2020-03-16 | Fixed type constant velocity universal joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019072801A JP7458712B2 (ja) | 2019-04-05 | 2019-04-05 | 固定式等速自在継手 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020169716A JP2020169716A (ja) | 2020-10-15 |
JP7458712B2 true JP7458712B2 (ja) | 2024-04-01 |
Family
ID=72668606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2019072801A Active JP7458712B2 (ja) | 2019-04-05 | 2019-04-05 | 固定式等速自在継手 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220056960A1 (ja) |
EP (1) | EP3951202B1 (ja) |
JP (1) | JP7458712B2 (ja) |
CN (1) | CN113661337A (ja) |
WO (1) | WO2020203215A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006336773A (ja) | 2005-06-02 | 2006-12-14 | Ntn Corp | 固定型等速自在継手 |
JP2010019399A (ja) | 2008-07-14 | 2010-01-28 | Jtekt Corp | ボール型等速ジョイント |
JP2013104432A (ja) | 2011-11-10 | 2013-05-30 | Ntn Corp | 固定式等速自在継手 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1326027B1 (en) * | 1997-07-16 | 2006-02-01 | Nsk Ltd | Constant velocity joint for wheels |
WO2006121024A1 (ja) * | 2005-05-12 | 2006-11-16 | Ntn Corporation | 固定型等速自在継手 |
DE102005023035A1 (de) | 2005-05-13 | 2006-11-23 | Gkn Driveline Deutschland Gmbh | Gelenk mit vergrößertem Öffnungswinkel |
JP2007064404A (ja) * | 2005-08-31 | 2007-03-15 | Ntn Corp | 固定式等速自在継手 |
JP4885236B2 (ja) | 2005-12-29 | 2012-02-29 | ジーケイエヌ ドライヴライン インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング | 大きな屈曲角の固定式等速自在継手 |
JP2008075820A (ja) * | 2006-09-22 | 2008-04-03 | Ntn Corp | 固定型等速自在継手 |
JP5885997B2 (ja) * | 2011-05-30 | 2016-03-16 | Ntn株式会社 | 固定式等速自在継手 |
KR101336506B1 (ko) * | 2011-11-16 | 2013-12-03 | 현대위아 주식회사 | 차량용 볼타입 등속조인트 |
JP2017020543A (ja) * | 2015-07-08 | 2017-01-26 | Ntn株式会社 | 固定式等速自在継手 |
JP6821295B2 (ja) * | 2015-09-24 | 2021-01-27 | Ntn株式会社 | 固定式等速自在継手 |
JP6832629B2 (ja) * | 2016-03-25 | 2021-02-24 | Ntn株式会社 | 固定式等速自在継手 |
JP7139269B2 (ja) * | 2018-04-03 | 2022-09-20 | Ntn株式会社 | 固定式等速自在継手 |
-
2019
- 2019-04-05 JP JP2019072801A patent/JP7458712B2/ja active Active
-
2020
- 2020-03-16 US US17/599,770 patent/US20220056960A1/en active Pending
- 2020-03-16 WO PCT/JP2020/011404 patent/WO2020203215A1/ja unknown
- 2020-03-16 CN CN202080026424.9A patent/CN113661337A/zh active Pending
- 2020-03-16 EP EP20785388.8A patent/EP3951202B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006336773A (ja) | 2005-06-02 | 2006-12-14 | Ntn Corp | 固定型等速自在継手 |
JP2010019399A (ja) | 2008-07-14 | 2010-01-28 | Jtekt Corp | ボール型等速ジョイント |
JP2013104432A (ja) | 2011-11-10 | 2013-05-30 | Ntn Corp | 固定式等速自在継手 |
Also Published As
Publication number | Publication date |
---|---|
EP3951202B1 (en) | 2024-05-15 |
JP2020169716A (ja) | 2020-10-15 |
WO2020203215A8 (ja) | 2021-09-16 |
CN113661337A (zh) | 2021-11-16 |
WO2020203215A1 (ja) | 2020-10-08 |
EP3951202A1 (en) | 2022-02-09 |
US20220056960A1 (en) | 2022-02-24 |
EP3951202A4 (en) | 2023-01-11 |
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