WO2011074449A1 - 等速ジョイント - Google Patents
等速ジョイント Download PDFInfo
- Publication number
- WO2011074449A1 WO2011074449A1 PCT/JP2010/071968 JP2010071968W WO2011074449A1 WO 2011074449 A1 WO2011074449 A1 WO 2011074449A1 JP 2010071968 W JP2010071968 W JP 2010071968W WO 2011074449 A1 WO2011074449 A1 WO 2011074449A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- constant velocity
- trunnions
- velocity joint
- guide grooves
- center
- Prior art date
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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
- F16D3/202—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 one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—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 one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—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 one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod 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
- F16D3/202—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 one coupling part having radially projecting pins, e.g. tripod joints
- F16D2003/2023—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 one coupling part having radially projecting pins, e.g. tripod joints with linear rolling bearings between raceway and trunnion mounted shoes
-
- 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
- F16D3/202—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 one coupling part having radially projecting pins, e.g. tripod joints
- F16D2003/2026—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 one coupling part having radially projecting pins, e.g. tripod joints with trunnion rings, i.e. with tripod joints having rollers supported by a ring on the trunnion
Definitions
- the present invention relates to, for example, a constant velocity joint that transmits a driving force by connecting one transmission shaft and the other transmission shaft in a driving force transmission portion of an automobile.
- the present applicant connects a first shaft that is one transmission shaft and a second shaft that is the other transmission shaft, and transmits a constant velocity joint that transmits rotational force to each axle.
- the constant velocity joint includes an inner joint fitted to the second shaft inside a cylindrical outer joint member provided at the end of the first shaft. A member is accommodated, and a rotating body is rotatably provided on the trunnion of the inner joint member. Then, the rotational force from the first shaft is transmitted to the second shaft via the outer joint member and the inner joint member, and the first shaft and the second shaft rotate together, and the inner joint The member is displaced along the axial direction of the outer joint member.
- a general object of the present invention is to provide a constant velocity joint that can be reduced in size and weight.
- the present invention has a plurality of guide grooves spaced apart from each other and extending along the axial direction on the inner peripheral surface, and a cylindrical outer member connected to the first transmission shaft, and inserted into the outer member And a constant velocity joint comprising an inner member coupled to the second transmission shaft, It has a ceiling portion and a rolling portion that is formed in a planar shape substantially orthogonal to the ceiling portion and abutted against a rotating body mounted on the inner member, and is recessed radially outward with respect to the inner peripheral surface
- An outer member formed with the guide groove;
- An inner member having a plurality of trunnions inserted into the guide groove and rotatably mounted on the outer peripheral portion;
- the trunnion includes a spherical section having a circular arc cross section into which a holder that rotatably holds the rotating body is fitted, and a set of plane sections orthogonal to the axial direction of the coupling hole to which the second transmission shaft is coupled. It is characterized by having
- the trunnion constituting the inner member is orthogonal to the axial direction of the coupling hole to which the transmission shaft is coupled, and the spherical section having a circular arc section in which the holder that rotatably holds the rotating body is fitted. And a set of plane portions.
- the constant velocity joint including the inner member can be reduced in weight.
- FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG. It is the expanded sectional view which contrasted the shape of the constant velocity joint which concerns on a prior art with respect to the constant velocity joint of FIG. It is a perspective view of the inner member which comprises the constant velocity joint shown in FIG. It is an expanded sectional view of the constant velocity joint which concerns on a modification.
- reference numeral 10 indicates a constant velocity joint according to an embodiment of the present invention.
- the constant velocity joint 10 is a cylindrical outer cup (outer member) integrally connected to one end of a first shaft 12 serving as one transmission shaft and having an opening 14. ) 16 and an inner member 20 fixed to one end portion of the second shaft 18 which is the other transmission shaft and housed in the hole portion 16a of the outer cup 16.
- each of the guide grooves 22a to 22c is formed by a flat ceiling portion 24 and a plane substantially orthogonal to the ceiling portion 24, and is a rolling surface (rolling portion) that contacts an outer peripheral surface of a roller 52 described later. 26, and an inclined surface 28 that joins the ceiling portion 24 and the rolling surface 26.
- the ceiling 24 extends from the center A of the outer cup 16 in a direction substantially orthogonal to a center line (axis line) L1 passing through the center of the width dimension of the guide grooves 22a to 22c, and the rolling surface 26 is formed of the center line. It is formed substantially parallel to L1.
- the inclined surface 28 is slightly inclined from both end portions of the ceiling portion 24 toward the center A side of the outer cup 16.
- the center line L1 of the outer cup 16 is the same as the axis of the trunnions 36a to 36c constituting the inner member 20 accommodated in the outer cup 16.
- the width dimension B1 of the guide grooves 22a to 22c orthogonal to the center line L1 of the outer cup 16 constitutes the above-described conventional constant velocity joint 10A (two-dot chain line shape in FIG. 4) as shown in FIG.
- the guide groove 22a '(22b', 22c ') is set larger than the width dimension B2.
- the inclined surface 28 joined to the end portion of the ceiling portion 24 is located at a position where the joining portion with the rolling surface 26 is close to the outer peripheral surface of the outer cup 16.
- the guide grooves 22a to 22c including the ceiling 24 are compared with the guide grooves 22a '(22b', 22c ') constituting the conventional constant velocity joint 10A and the center A side (radial inward direction) of the outer cup 16. It is provided in the position.
- each guide groove 22a to 22c is compared with the conventional constant velocity joint 10A, as shown in FIG. 1, two adjacent guide grooves 22a and guide grooves 22b, guide grooves 22b and guide grooves 22c, and guides.
- the rolling surfaces 26 provided on the outermost side in the width direction are provided so as to be close to each other, and a portion sandwiched between two adjacent guide grooves in the outer cup 16 is radially inward.
- the bulging portion 30 is bulged.
- the bulging portion 30 is formed narrower in the circumferential direction (in the direction of arrow C in FIG. 4) than the bulging portion 30 ′ of the conventional constant velocity joint 10A. Therefore, the mass of the outer cup 16 is reduced by the amount that the bulging portion 30 is reduced in size.
- the inner member 20 is formed on a ring-shaped spider boss portion 34 having a shaft hole 32 penetrating in the center, and an outer peripheral surface of the spider boss portion 34, and is formed in the guide grooves 22a to 22c.
- three trunnions 36a to 36c which bulge outward in the radial direction and are provided at intervals of about 120 degrees around the axis.
- a curved surface portion 38 having an arc cross section having a predetermined curvature is formed on the outer peripheral surfaces of the trunnions 36a to 36c.
- a spline groove 40 is formed in the inner peripheral surface of the shaft hole (coupling hole) 32 along the axial direction (the direction of arrow D in FIG. 5), and the spline portion 42 of the second shaft 18 is fitted. .
- the inner member 20 is formed with a predetermined thickness along the axial direction (arrow D direction) of the shaft hole 32, and is one end surface (plane portion) orthogonal to the axial line L ⁇ b> 2.
- 20a and the other end surface (planar portion) 20b are formed in a planar shape.
- the inner member 20 is joined to the one end surface 20a and the other end surface 20b and the outer peripheral surface of the spider boss portion 34 with a gentle curved surface.
- the trunnions 36a to 36c are formed so that a pair of plane portions 44a and 44b orthogonal to the axis of the shaft hole 32 are flush with the one end surface 20a and the other end surface 20b of the spider boss portion 34, respectively.
- a pair of spherical surface portions 46a and 46b having an arcuate cross section are formed on the outer surface substantially orthogonal to 44b. As shown in FIG. 2, the spherical portions 46a and 46b are at positions where the center RC is offset from the center TC of the trunnions 36a to 36c by a predetermined distance toward the spherical portions 46a and 46b.
- the trunnions 36a to 36c are respectively fitted with ring-shaped holders 48, and the inner peripheral surfaces of the holders 48 formed in a cross-sectional plane shape are slid onto the spherical portions 46a and 46b of the trunnions 36a to 36c, respectively.
- the flat portions 44a and 44b are not in contact with each other (see FIG. 3). That is, the trunnions 36a to 36c are provided so as to be slidable along the axial direction of the holder 48, and are provided so as to be tiltable with respect to the holder 48 by a predetermined angle.
- the trunnions 36a to 36c are formed so as to be wide in the direction orthogonal to the axis L1 of the trunnions 36a to 36c corresponding to the guide grooves 22a to 22c of the outer cup 16, and the conventional constant velocity joint 10A is formed.
- the inner member 20 which comprises, it forms in the radial inner direction which adjoined the spider boss
- the separation distance between the trunnions 36a to 36c and the spider boss part 34 is set to be smaller than that of the conventional constant velocity joint 10A, and the trunnions 36a to 36c approach the spider boss part 34 side (radially inward direction). And it becomes the shape expanded in the width direction.
- the trunnions 36a to 36c are provided so as to be rotatable by a predetermined angle in the direction of arrow E with respect to the inner peripheral surface of the holder 48, and in addition, the trunnions 36a to 36c are arranged in the circumferential direction (see FIG. 2, the trunnions 36 a to 36 c are provided so as to be freely displaceable in the vertical direction (in the direction of arrow G in FIG. 2) with respect to the inner peripheral surface of the holder 48. ing.
- a ring-shaped roller (rotating body) 52 is fitted around the outer periphery of the holder 48 via a plurality of needle bearings 50.
- the needle bearing 50 and the roller 52 are held by a circlip 54 and a washer 56 that are fitted in an annular groove of the holder 48. Note that the needle bearing 50 and the roller 52 can be held by the circlip 54 alone with respect to the holder 48 without using the washer 56.
- the constant velocity joint 10 is basically configured as described above, and the operation and effects thereof will be described next.
- the rotational force is transmitted to the inner member 20 through the outer cup 16, and the second shaft 18 rotates in a predetermined direction. That is, the rotational force of the outer cup 16 is transmitted through the roller 52 and the needle bearing 50 that are in contact with the guide grooves 22a to 22c, and further, the trunnion is connected through the spherical portions 46a and 46b that are in contact with the inner peripheral surface of the holder 48. 36a to 36c. Then, the second shaft 18 fitted to the trunnions 36a to 36c rotates.
- the spherical portions 46a and 46b of the trunnions 36a to 36c are kept in contact with the inner peripheral surface of the holder 48.
- the trunnions 36a to 36c are slidably displaced in the direction of arrow E with the center TC of the trunnions 36a to 36c as the center of rotation, as shown in FIG.
- the trunnions 36a to 36c are arranged in a direction substantially perpendicular to the axis L1 of the trunnions 36a to 36c via a roller 52 that slides along the guide grooves 22a to 22c, that is, the longitudinal direction of the guide grooves 22a to 22c (see FIG. 3 is displaced along the arrow H direction (see FIG. 3).
- the rotational motion of the first shaft 12 is smoothly transmitted to the second shaft 18 without being affected by the inclination angle (joint angle) of the second shaft 18 with respect to the outer cup 16.
- the trunnions 36a to 36c constituting the inner member 20 include the spherical surface portions 46a and 46b having an arcuate cross section, and the spherical surface portion 46a,
- the center of 46b is offset from the center TC of the trunnions 36a to 36c provided on the center line L1 passing through the center A of the outer cup 16 and the centers of the guide grooves 22a to 22c. Therefore, the trunnions 36a to 36c are formed wide in the direction orthogonal to the center line L1, and accordingly, the width direction of the guide grooves 22a to 22c into which the trunnions 36a to 36c are inserted is formed to be large. As a result, in the outer cup 16, the thickness between the adjacent guide grooves 22a to 22c can be reduced, so that the outer cup 16 can be reduced in weight.
- the bulging portion 30 between the adjacent guide grooves 22a to 22c can be reduced, and the outer cup 16 can be thinned, so that the weight of the outer cup 16 is reduced. be able to.
- the inner member 20 including the trunnions 36a to 36c Stiffness can be improved.
- the inner member 20 including the trunnions 36a to 36c has a flat shape having a pair of one end face 20a and the other end face 20b orthogonal to the axis of the shaft hole 32, thereby comparing with the conventional constant velocity joint 10A.
- the inner member 20 can be reduced in size and weight, and the rigidity of the trunnions 36a to 36c can be increased as described above, and the rigidity and strength can be ensured and the movable range can be expanded.
- the trunnions 36a to 36c constituting the inner member 20 are provided with spherical portions 46a and 46b, and the center RC thereof is the center A of the outer cup 16 and the guide grooves 22a to 22a.
- the present invention is not limited to this.
- the center RC of the spherical portions 46a and 46b is provided on the center line L1 passing through the center A of the outer cup 16 and the centers of the guide grooves 22a to 22c.
- An inner member 102 that matches the center TC of the trunnions 36a to 36c may be applied.
- constant velocity joint is not limited to the above-described embodiment, and various configurations can be adopted without departing from the gist of the present invention.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
天井部と、該天井部に略直交する平面状に形成され、前記インナ部材に装着された回転体の当接する転動部とを有し、前記内周面に対して半径外方向に窪んだ前記案内溝の形成されるアウタ部材と、
前記案内溝に挿入され外周部に前記回転体が回転自在に装着される複数のトラニオンを有したインナ部材と、
を備え、
前記トラニオンには、前記回転体を回転自在に保持するホルダの嵌合される断面円弧状の球面部と、前記第2伝達軸の連結される結合孔の軸線方向に直交する一組の平面部とを有することを特徴とする。
Claims (3)
- 互いに離間して軸線方向に沿って延在する複数の案内溝(22a~22c)を内周面に有し、第1伝達軸(12)に連結される筒状のアウタ部材(16)と、前記アウタ部材(16)の内部に挿入され第2伝達軸(18)に連結されるインナ部材(20)とを備える等速ジョイントにおいて、
天井部(24)と、該天井部(24)に略直交する平面状に形成され、前記インナ部材(20)に装着された回転体(52)の当接する転動部(26)とを有し、前記内周面に対して半径外方向に窪んだ前記案内溝(22a~22c)の形成されるアウタ部材(16)と、
前記案内溝(22a~22c)に挿入され外周部に前記回転体(52)が回転自在に装着される複数のトラニオン(36a~36c)を有したインナ部材(20)と、
を備え、
前記トラニオン(36a~36c)には、前記回転体(52)を回転自在に保持するホルダ(48)の嵌合される断面円弧状の球面部(46a、46b)と、前記第2伝達軸(18)の連結される結合孔(32)の軸線方向に直交する一組の平面部(20a、20b)とを有することを特徴とする等速ジョイント。 - 請求項1記載の等速ジョイントにおいて、
前記インナ部材(20)は、前記第2伝達軸(18)が嵌合される円環部(34)を備え、前記複数のトラニオン(36a~36c)が、前記円環部(34)から前記案内溝(22a~22c)に向かって半径外方向に膨出して形成されることを特徴とする等速ジョイント。 - 請求項1又は2記載の等速ジョイントにおいて、
前記球面部(46a、46b)の中心(RC)が、前記アウタ部材(16)の中心と前記案内溝(22a~22c)の中心とを通る軸線上に設けられた前記トラニオン(36a~36c)の中心(TC)に対してオフセットして設けられることを特徴とする等速ジョイント。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/515,304 US20120252589A1 (en) | 2009-12-15 | 2010-12-08 | Constant velocity joint |
CN201080056431XA CN102656381A (zh) | 2009-12-15 | 2010-12-08 | 等速接头 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-283935 | 2009-12-15 | ||
JP2009283929A JP2011127625A (ja) | 2009-12-15 | 2009-12-15 | 等速ジョイント |
JP2009-283929 | 2009-12-15 | ||
JP2009283935A JP2011127626A (ja) | 2009-12-15 | 2009-12-15 | 等速ジョイントに用いられるインナ部材 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011074449A1 true WO2011074449A1 (ja) | 2011-06-23 |
Family
ID=44167206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/071968 WO2011074449A1 (ja) | 2009-12-15 | 2010-12-08 | 等速ジョイント |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120252589A1 (ja) |
CN (1) | CN102656381A (ja) |
WO (1) | WO2011074449A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8251827B2 (en) * | 2007-11-29 | 2012-08-28 | Hyundai Wia Corporation | Constant velocity joint of tripod type |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03172622A (ja) * | 1989-11-03 | 1991-07-26 | Loehr & Bromkamp Gmbh | トリポード型自在継ぎ手 |
JPH09133145A (ja) * | 1995-11-07 | 1997-05-20 | Honda Motor Co Ltd | 等速ジョイント |
JPH10184715A (ja) * | 1996-12-26 | 1998-07-14 | Ntn Corp | トリポード型等速自在継手 |
JP2006161932A (ja) * | 2004-12-06 | 2006-06-22 | Ntn Corp | トリポード型等速ジョイント |
JP2007205508A (ja) * | 2006-02-03 | 2007-08-16 | Honda Motor Co Ltd | トリポート型等速ジョイント |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2554532B1 (fr) * | 1983-11-04 | 1988-09-23 | Glaenzer Spicer Sa | Agencement de deux organes animes d'un mouvement de coulissement alternatif et son application dans un joint coulissant a tripode |
JP3043280B2 (ja) * | 1996-02-15 | 2000-05-22 | 本田技研工業株式会社 | 等速ジョイント |
DE10141427A1 (de) * | 2001-08-23 | 2003-03-13 | Daimler Chrysler Ag | Tripodegelenk |
-
2010
- 2010-12-08 US US13/515,304 patent/US20120252589A1/en not_active Abandoned
- 2010-12-08 CN CN201080056431XA patent/CN102656381A/zh active Pending
- 2010-12-08 WO PCT/JP2010/071968 patent/WO2011074449A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03172622A (ja) * | 1989-11-03 | 1991-07-26 | Loehr & Bromkamp Gmbh | トリポード型自在継ぎ手 |
JPH09133145A (ja) * | 1995-11-07 | 1997-05-20 | Honda Motor Co Ltd | 等速ジョイント |
JPH10184715A (ja) * | 1996-12-26 | 1998-07-14 | Ntn Corp | トリポード型等速自在継手 |
JP2006161932A (ja) * | 2004-12-06 | 2006-06-22 | Ntn Corp | トリポード型等速ジョイント |
JP2007205508A (ja) * | 2006-02-03 | 2007-08-16 | Honda Motor Co Ltd | トリポート型等速ジョイント |
Also Published As
Publication number | Publication date |
---|---|
US20120252589A1 (en) | 2012-10-04 |
CN102656381A (zh) | 2012-09-05 |
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