JP4637723B2 - Sliding constant velocity universal joint - Google Patents

Sliding constant velocity universal joint Download PDF

Info

Publication number
JP4637723B2
JP4637723B2 JP2005323799A JP2005323799A JP4637723B2 JP 4637723 B2 JP4637723 B2 JP 4637723B2 JP 2005323799 A JP2005323799 A JP 2005323799A JP 2005323799 A JP2005323799 A JP 2005323799A JP 4637723 B2 JP4637723 B2 JP 4637723B2
Authority
JP
Japan
Prior art keywords
circlip
peripheral surface
annular groove
outer ring
constant velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2005323799A
Other languages
Japanese (ja)
Other versions
JP2007132377A (en
Inventor
正純 小林
圭介 西尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTN Corp filed Critical NTN Corp
Priority to JP2005323799A priority Critical patent/JP4637723B2/en
Publication of JP2007132377A publication Critical patent/JP2007132377A/en
Application granted granted Critical
Publication of JP4637723B2 publication Critical patent/JP4637723B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • 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
    • F16D3/226—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 cylinder co-axial with the respective coupling part
    • F16D3/227—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 cylinder co-axial with the respective coupling part the joints being telescopic
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Description

本発明は、例えば、自動車や各種産業機械の動力伝達機構において使用されるもので、駆動側と従動側の二軸間で軸方向変位および角度変位を許容するダブルオフセット型の摺動式等速自在継手に関する。   The present invention is used, for example, in a power transmission mechanism of an automobile or various industrial machines, and is a double offset type sliding constant velocity that allows axial displacement and angular displacement between two axes of a driving side and a driven side. It relates to a universal joint.

自動車や各種産業機械の動力伝達系、例えば前輪駆動車や独立懸架方式の後輪駆動車の駆動軸には、角度変位および軸方向変位の両方を許容する摺動式等速自在継手が使用されている。この摺動式等速自在継手には、トルク伝達要素としてボールを用いたボールタイプのダブルオフセット型等速自在継手（ＤＯＪ）がよく知られている。   Sliding constant velocity universal joints that allow both angular displacement and axial displacement are used in the power transmission systems of automobiles and various industrial machines, such as the drive shafts of front-wheel drive vehicles and independent-suspension-type rear-wheel drive vehicles. ing. As this sliding type constant velocity universal joint, a ball type double offset constant velocity universal joint (DOJ) using a ball as a torque transmission element is well known.

この種のダブルオフセット型の摺動式等速自在継手は、例えば前輪駆動車や独立懸架方式の後輪駆動車において、トランスミッションからディファレンシャルに回転駆動力を伝達するプロペラシャフト（推進軸）や、ディファレンシャルから車輪に回転駆動力を伝達するドライブシャフトに使用される。   This type of double offset type sliding constant velocity universal joint is used in propeller shafts (propulsion shafts) that transmit rotational driving force from the transmission to the differential, for example, in front wheel drive vehicles and independent suspension type rear wheel drive vehicles. Used for a drive shaft that transmits rotational driving force from to the wheel.

このタイプの等速自在継手は、図４および図５に示すように外方部材としての外輪１と、内方部材としての内輪２と、外輪１および内輪２の間に組み込まれた複数のトルク伝達ボール３と、外輪１と内輪２との間に介在してボール３を保持するケージ４とを主要な構成要素としている（例えば、特許文献１参照）。   4 and 5, this type of constant velocity universal joint includes a plurality of torques incorporated between an outer ring 1 as an outer member, an inner ring 2 as an inner member, and the outer ring 1 and the inner ring 2. The transmission ball 3 and the cage 4 that is interposed between the outer ring 1 and the inner ring 2 and holds the ball 3 are main components (see, for example, Patent Document 1).

外輪１は、その軸線に平行な複数の直線状トラック溝５が円筒状内周面６に円周方向等間隔で形成された円筒形状を有する。また、内輪２は、外輪１のトラック溝５と対応させて軸線に平行な複数の直線状トラック溝７が球面状外周面８に形成されている。この外輪１のトラック溝５と内輪２のトラック溝７とが協働して形成するボールトラックに、トルクを伝達するボール３が配されている。各ボール３は、外輪１の内周面６と内輪２の外周面８との間に介装されたケージ４のポケット９に収容されている。   The outer ring 1 has a cylindrical shape in which a plurality of linear track grooves 5 parallel to the axis are formed on the cylindrical inner peripheral surface 6 at equal intervals in the circumferential direction. The inner ring 2 is formed with a plurality of linear track grooves 7 parallel to the axis line on the spherical outer peripheral surface 8 so as to correspond to the track grooves 5 of the outer ring 1. A ball 3 for transmitting torque is disposed on a ball track formed by the track groove 5 of the outer ring 1 and the track groove 7 of the inner ring 2 in cooperation. Each ball 3 is accommodated in a pocket 9 of the cage 4 interposed between the inner peripheral surface 6 of the outer ring 1 and the outer peripheral surface 8 of the inner ring 2.

ケージ４の外周面１０および内周面１１はそれぞれ部分球面で構成されている。内輪２の外周面８の曲率中心Ｏ1とケージ４の外周面１０の部分球面の曲率中心Ｏ2とは、ボール３の中心Ｏ3を含む継手中心面Ｐに対して軸線方向に等距離ｆだけオフセットされている。なお、ケージ４の内周面１１の部分球面は、内輪２の外周面８と一致した曲率中心Ｏ1を有する。 The outer peripheral surface 10 and the inner peripheral surface 11 of the cage 4 are each composed of a partial spherical surface. The center of curvature O 1 of the outer peripheral surface 8 of the inner ring 2 and the center of curvature O 2 of the partial spherical surface of the outer peripheral surface 10 of the cage 4 are equidistant in the axial direction with respect to the joint center plane P including the center O 3 of the ball 3. Is just offset. The partial spherical surface of the inner peripheral surface 11 of the cage 4 has a center of curvature O 1 that coincides with the outer peripheral surface 8 of the inner ring 2.

この等速自在継手では、外輪１と内輪２との間に作動角が付与された場合、ケージ４によりボール３を作動角の二等分面上に制御して継手の等速性が維持される構造となっている。また、外輪１と内輪２との間に角度変位がある状態でも内輪２の軸方向変位がスムーズになされる。
実開平４−１１７９２６号公報 In this constant velocity universal joint, when an operating angle is given between the outer ring 1 and the inner ring 2, the cage 3 controls the ball 3 on the bisecting plane of the operating angle to maintain the constant velocity of the joint. It has a structure. Even in the state where there is an angular displacement between the outer ring 1 and the inner ring 2, the axial displacement of the inner ring 2 is made smoothly.
Japanese Utility Model Publication No. 4-117926

前述した等速自在継手は、角度方向だけでなく軸方向にも変位可能なため、継手の軸方向変位の最大限をサークリップ１２で規制する構造を具備する。すなわち、外輪１の内周面６の開口側に環状溝部１３を形成し、その環状溝部１３にサークリップ１２を嵌合させた構造としている。サークリップ１２は、弾性のある割リング（図５の破線参照）であって、半径方向にやや縮径させて環状溝部１３に装着すると、その自己復元力でもって環状溝部１３に嵌合させることが可能である。   Since the constant velocity universal joint described above can be displaced not only in the angular direction but also in the axial direction, it has a structure in which the maximum axial displacement of the joint is regulated by the circlip 12. That is, an annular groove 13 is formed on the opening side of the inner peripheral surface 6 of the outer ring 1, and the circlip 12 is fitted into the annular groove 13. The circlip 12 is an elastic split ring (see the broken line in FIG. 5). When the circlip 12 is attached to the annular groove 13 with a slightly reduced diameter in the radial direction, the circlip 12 is fitted into the annular groove 13 with its self-restoring force. Is possible.

このような構造を採用することにより、内輪２、ケージ４およびボール３からなる内部部品が軸方向に変位するに際して、その内部部品のボール３がサークリップ１２に干渉することにより、外輪１のトラック溝５に配されたボール３が外輪１の開口側から飛び出すスライドオーバーを規制するようにしている。   By adopting such a structure, when the internal part composed of the inner ring 2, the cage 4 and the ball 3 is displaced in the axial direction, the ball 3 of the internal part interferes with the circlip 12 and thereby the track of the outer ring 1 is obtained. The ball 3 disposed in the groove 5 is restricted from sliding over the outer ring 1 from the opening side.

ところで、前述したようにプロペラシャフトやドライブシャフトに使用される摺動式等速自在継手（ＤＯＪ）は、プロペラシャフトやドライブシャフトに使用されるが、特にプロペラシャフトの場合、外輪１に内輪２、ケージ４、ボール３等を組み付けたＤＯＪサブアッセンブリ体と、外輪１に溶接接合されるチューブを含めた総アッセンブリ体とでは、製造メーカが異なる場合がある。   By the way, as described above, the sliding type constant velocity universal joint (DOJ) used for the propeller shaft and the drive shaft is used for the propeller shaft and the drive shaft. In particular, in the case of the propeller shaft, the outer ring 1 includes the inner ring 2, The manufacturer may differ between the DOJ subassembly body assembled with the cage 4, the ball 3, and the like and the total assembly body including the tube welded to the outer ring 1.

製造メーカが異なる場合、ＤＯＪサブアッセンブリ体の製造メーカでは、各構成部品のマッチングを行うことにより各種すきま等が適切となるようにＤＯＪサブアッセンブリ体を組み立てた上で、総アッセンブリ体の製造メーカに出荷する。その際、内輪２、ケージ４およびボール３からなる内部部品がバラバラにならないように外輪１の内周面６の開口側に位置する環状溝部１３にサークリップ１２を装着した状態で出荷するようにしている。   If the manufacturer is different, the manufacturer of the DOJ subassembly body assembles the DOJ subassembly body so that various clearances and the like are appropriate by matching each component, and then the manufacturer of the total assembly body Ship. At that time, the circlip 12 is mounted in the annular groove portion 13 located on the opening side of the inner peripheral surface 6 of the outer ring 1 so that the inner parts composed of the inner ring 2, the cage 4 and the ball 3 do not fall apart. ing.

一方、総アッセンブリ体の製造メーカでは、外輪１からサークリップ１２を取り外した上で、内輪２、ケージ４およびボール３からなる内部部品をカセット状態で外輪１から取り出し、例えばシャフトを内輪２に嵌合したり、外輪１にチューブを接合したりして他の部品を組み付けた上で、再度、前述の内部部品およびサークリップ１２を外輪１に組み込むようにしている。サークリップ１２は、車両搭載後もスライドオーバー規制部品としてそのまま使用されることになる。   On the other hand, the manufacturer of the total assembly body removes the circlip 12 from the outer ring 1 and takes out the inner parts including the inner ring 2, the cage 4 and the balls 3 from the outer ring 1 in a cassette state. The above-mentioned internal parts and the circlip 12 are incorporated into the outer ring 1 again after the other parts are assembled by joining or joining the outer ring 1 with a tube. The circlip 12 is used as it is as a slide-over regulating part even after being mounted on the vehicle.

このように総アッセンブリ体の製造メーカでは、ＤＯＪサブアッセンブリ体を一旦分解しているのは以下の理由に基づく。つまり、ＤＯＪサブアッセンブリ体の状態で内輪２にシャフトをそのまま嵌合すると、内輪２とシャフト間で円周方向ガタを規制するため圧入設計をとっているため、ケージ４に過大な荷重が加わってケージ４が破損するおそれがある。また、ＤＯＪサブアッセンブリ体の状態で外輪１にそのままチューブを溶接接合すると、内部部品との関係でチューブの取付け精度が悪くなるかあるいは内部部品に接合時の熱による悪影響が及ぶ可能性がある。   In this way, in the manufacturer of the total assembly, the DOJ subassembly is once disassembled for the following reason. That is, when the shaft is directly fitted to the inner ring 2 in the state of the DOJ sub-assembly body, an excessive load is applied to the cage 4 because the press-fit design is adopted to restrict the circumferential play between the inner ring 2 and the shaft. The cage 4 may be damaged. Further, if the tube is welded and joined as it is to the outer ring 1 in the state of the DOJ subassembly body, there is a possibility that the mounting accuracy of the tube is deteriorated in relation to the internal parts, or the internal parts are adversely affected by heat at the time of joining.

以上のことから、総アッセンブリ体の製造メーカでは、ＤＯＪサブアッセンブリ体を一旦分解する必要があることから、外輪１から内部部品を取り出すに際しては、サークリップ１２を一旦取り外す必要がある。   From the above, since the manufacturer of the total assembly needs to disassemble the DOJ subassembly once, when removing the internal parts from the outer ring 1, it is necessary to remove the circlip 12 once.

しかしながら、サークリップ１２を外輪１の環状溝部１３から取り外すためには、特殊治具などが必要で手間を要する。つまり、サークリップ１２は全体が環状溝部１３内に埋没した状態となっており、このような状態では、一般治具でサークリップ１２を環状溝部１３から引き出しにくく、サークリップ１２を環状溝部１３から取り外すのが非常に困難である。そのため、専用の特殊治具を使用することになるが、その特殊治具の取り扱いが必ずしも容易ではなく、取り外しに相当の手間がかかっているのが現状である。   However, in order to remove the circlip 12 from the annular groove 13 of the outer ring 1, a special jig or the like is necessary, which is troublesome. In other words, the circlip 12 is entirely embedded in the annular groove 13. In such a state, the circlip 12 is difficult to pull out from the annular groove 13 with a general jig, and the circlip 12 is removed from the annular groove 13. It is very difficult to remove. For this reason, a dedicated special jig is used, but it is not always easy to handle the special jig, and it takes a lot of time to remove it.

そこで、本発明は前述の問題点に鑑みて提案されたもので、その目的とするところは、サークリップの取り外しを簡単かつ容易に行い得る摺動式等速自在継手を提供することにある。   The present invention has been proposed in view of the above-mentioned problems, and an object of the present invention is to provide a sliding type constant velocity universal joint capable of easily and easily removing a circlip.

前述の目的を達成するため、本発明は、円筒状内周面に複数の直線状トラック溝が軸方向に沿って形成された外方部材と、球面状外周面に複数の直線状トラック溝が軸方向に沿って形成された内方部材と、外方部材のトラック溝と内方部材のトラック溝との間に介在して対をなす両トラック溝で形成されるボールトラックに配された複数のトルク伝達ボールと、外方部材の円筒状内周面と内方部材の球面状外周面との間に介在してトルク伝達ボールを保持するケージとを備え、外方部材の内周面開口側に形成された環状溝部にトルク伝達ボールの飛び出しを規制するサークリップが嵌合された摺動式等速自在継手において、サークリップが嵌合された環状溝部の外方部材開口側はその環状溝部にサークリップが埋没した状態で、環状溝部の外方部材反開口側に、サークリップを取り外すための治具が挿入可能な隙間を形成し、その隙間は、環状溝部の外方部材反開口側を拡開させたテーパ面で構成されていることを特徴とする。 In order to achieve the above object, the present invention provides an outer member in which a plurality of linear track grooves are formed along the axial direction on a cylindrical inner peripheral surface, and a plurality of linear track grooves on a spherical outer peripheral surface. A plurality of balls arranged on a ball track formed by an inner member formed along the axial direction and a pair of track grooves interposed between the track groove of the outer member and the track groove of the inner member. And a cage for holding the torque transmission ball interposed between the cylindrical inner peripheral surface of the outer member and the spherical outer peripheral surface of the inner member, and opening the inner peripheral surface of the outer member In the sliding type constant velocity universal joint in which the circlip for restricting the jump of the torque transmitting ball is fitted to the annular groove formed on the side, the outer member opening side of the annular groove to which the circlip is fitted is the ring in a state in which the circlip is buried in the groove, the outside of the annular groove The member anti-opening side, jig forms a possible insertion clearance for removing the circlip, that the gap, which is composed of a tapered surface which is expanded to the outer member counter-opening side of the annular groove Features.

本発明では、サークリップが嵌合された環状溝部の外方部材反開口側に、サークリップを取り外すための治具が挿入可能な隙間を形成し、その隙間は、環状溝部の外方部材反開口側を拡開させたテーパ面で構成されていることにより、隙間を容易に形成することができ、外方部材の反開口側から、例えばドライバ等の一般治具を環状溝部の隙間のテーパ面に沿って挿入するだけでサークリップを半径方向内側に簡単かつ容易に引き起こすことができる。なお、環状溝部の外方部材開口側については、その環状溝部にサークリップが埋没した状態を維持しているので、ボールが外方部材の開口側から飛び出すスライドオーバーを規制する機能が確保されている。 In the present invention, a gap into which a jig for removing the circlip can be inserted is formed on the side opposite to the opening of the outer groove of the annular groove portion into which the circlip is fitted. By configuring the taper surface with the opening side widened , the gap can be easily formed. From the opposite side of the outer member, for example, a general jig such as a screwdriver can be tapered of the gap in the annular groove. The circlip can be easily and easily raised radially inward simply by inserting along the surface . Since the circlip is embedded in the annular groove portion on the outer member opening side of the annular groove portion, the function of restricting the slide over that the ball jumps out from the opening side of the outer member is secured. Yes.

前述の構成における隙間は、外方部材の円筒状内周面の全周に亘って形成されていることが望ましい。このように外方部材の円筒状内周面の全周に亘って隙間を形成しておけば、外方部材の円周方向のいずれの位置であっても、サークリップの取り外しが可能となる。なお、この隙間は、必ずしも全周に亘って形成する必要がなく、外方部材の円筒状内周面のいずれか一箇所あるいは複数箇所に形成するようにしてもよい。   The gap in the above-described configuration is preferably formed over the entire circumference of the cylindrical inner peripheral surface of the outer member. Thus, if a clearance is formed over the entire circumference of the cylindrical inner peripheral surface of the outer member, the circlip can be removed at any position in the circumferential direction of the outer member. . Note that the gap does not necessarily have to be formed over the entire circumference, and may be formed at one or a plurality of locations on the cylindrical inner peripheral surface of the outer member.

本発明によれば、サークリップが嵌合された環状溝部の外方部材反開口側に、サークリップを取り外すための治具が挿入可能な隙間を形成し、その隙間は、環状溝部の外方部材反開口側を拡開させたテーパ面で構成されていることにより、隙間を容易に形成することができ、外方部材の反開口側から、例えばドライバ等の一般治具を環状溝部の隙間のテーパ面に沿って挿入するだけでサークリップを半径方向内側に簡単かつ容易に引き起こすことができる。このようにして、サークリップの取り外しが簡単かつ容易になることによって、プロペラシャフトやドライブシャフトの総アッセンブリ体の組み立てにおける作業性を向上させることができる。なお、環状溝部の外方部材開口側については、その環状溝部にサークリップが埋没した状態を維持しているので、ボールが外方部材の開口側から飛び出すスライドオーバーを規制する機能が確保されている。 According to the present invention, a gap into which a jig for removing the circlip can be inserted is formed on the side opposite to the outer member of the annular groove portion into which the circlip is fitted , and the gap is formed on the outer side of the annular groove portion. By being configured with a taper surface that is widened on the opposite side of the member , a gap can be easily formed. From the opposite side of the outer member, for example, a general jig such as a screwdriver can be provided between the annular grooves. The circlip can be easily and easily raised radially inward simply by inserting it along the taper surface . In this way, the circlip can be easily and easily removed, so that the workability in assembling the total assembly of the propeller shaft and the drive shaft can be improved. Since the circlip is embedded in the annular groove portion on the outer member opening side of the annular groove portion, the function of restricting the slide over that the ball jumps out from the opening side of the outer member is secured. Yes.

図１〜図３は本発明の実施形態としてのダブルオフセット型の摺動式等速自在継手（ＤＯＪ）で、図１は内輪２２、ケージ２４およびボール２３を外方部材としての外輪２１に組み込んだ全体構成で、図２のＡ−Ｏ−Ｂ線に沿う断面図である。図２は図１の左側面図である。図３は図１のＸ部の拡大図である。   1 to 3 show a double offset type sliding constant velocity universal joint (DOJ) as an embodiment of the present invention. FIG. 1 shows an inner ring 22, a cage 24 and a ball 23 incorporated in an outer ring 21 as an outer member. FIG. 3 is a cross-sectional view taken along line A-O-B in FIG. FIG. 2 is a left side view of FIG. FIG. 3 is an enlarged view of a portion X in FIG.

図１および図２に示す実施形態の等速自在継手は、外方部材としての外輪２１と、内方部材としての内輪２２と、外輪２１および内輪２２の間に組み込まれた複数のトルク伝達ボール２３と、外輪２１と内輪２２との間に介在してボール２３を保持するケージ２４とを主要な構成要素としている。   The constant velocity universal joint of the embodiment shown in FIGS. 1 and 2 includes an outer ring 21 as an outer member, an inner ring 22 as an inner member, and a plurality of torque transmission balls incorporated between the outer ring 21 and the inner ring 22. 23 and a cage 24 that is interposed between the outer ring 21 and the inner ring 22 and holds the ball 23 are main components.

外輪２１は、その軸線に平行な複数の直線状トラック溝２５が円筒状内周面２６に円周方向等間隔で形成された円筒形状を有する。また、内輪２２は、外輪２１のトラック溝２５と対応させて軸線に平行な複数の直線状トラック溝２７が球面状外周面２８に形成されている。この外輪２１のトラック溝２５と内輪２２のトラック溝２７とが協働して形成するボールトラックに、トルクを伝達するボール２３が配されている。各ボール２３は、外輪２１の内周面２６と内輪２２の外周面２８との間に介装したケージ２４のポケット２９に収容されている。   The outer ring 21 has a cylindrical shape in which a plurality of linear track grooves 25 parallel to the axis thereof are formed on the cylindrical inner peripheral surface 26 at equal intervals in the circumferential direction. In addition, the inner ring 22 has a plurality of linear track grooves 27 parallel to the axis corresponding to the track grooves 25 of the outer ring 21 formed on the spherical outer peripheral surface 28. A ball 23 for transmitting torque is arranged on a ball track formed by the track groove 25 of the outer ring 21 and the track groove 27 of the inner ring 22 in cooperation. Each ball 23 is accommodated in a pocket 29 of a cage 24 interposed between an inner peripheral surface 26 of the outer ring 21 and an outer peripheral surface 28 of the inner ring 22.

ケージ２４の外周面３０および内周面３１はそれぞれ部分球面で構成されている。内輪２２の外周面２８の曲率中心Ｏ1とケージ２４の外周面３０の部分球面の曲率中心Ｏ2とは、ボール２３の中心Ｏ3を含む継手中心面Ｐに対して軸線方向に等距離ｆだけオフセットされている。なお、ケージ２４の内周面３１の部分球面は、内輪２２の外周面２８と一致した曲率中心Ｏ1を有する。 The outer peripheral surface 30 and the inner peripheral surface 31 of the cage 24 are each composed of a partial spherical surface. The center of curvature O 1 of the outer peripheral surface 28 of the inner ring 22 and the center of curvature O 2 of the partial spherical surface of the outer peripheral surface 30 of the cage 24 are equidistant in the axial direction with respect to the joint center plane P including the center O 3 of the ball 23. Is just offset. The partial spherical surface of the inner peripheral surface 31 of the cage 24 has a center of curvature O 1 that coincides with the outer peripheral surface 28 of the inner ring 22.

この等速自在継手では、外輪２１と内輪２２との間に作動角が付与された場合、ケージ２４によりボール２３を作動角の二等分面上に制御させて等速性を維持する構造となっている。また、外輪２１と内輪２２との間に角度変位がある状態でも内輪２２の軸方向変位がスムーズになされる。   In this constant velocity universal joint, when an operating angle is applied between the outer ring 21 and the inner ring 22, the cage 24 controls the ball 23 on a bisecting plane of the operating angle, and maintains a constant velocity. It has become. Even in the state where there is an angular displacement between the outer ring 21 and the inner ring 22, the inner ring 22 is smoothly displaced in the axial direction.

この等速自在継手は、角度方向だけでなく軸方向にも変位可能なため、継手の軸方向変位の最大限をサークリップ３２で規制する構造を具備する。すなわち、外輪２１の内周面２６の開口側に環状溝部３３を形成し、その環状溝部３３にサークリップ３２を嵌合させた構造としている。サークリップ３２は、弾性のある割リング（図２の破線参照）であって、半径方向にやや縮径させて環状溝部３３に装着すると、その自己復元力でもって環状溝部３３に嵌合させることが可能である。   Since this constant velocity universal joint can be displaced not only in the angular direction but also in the axial direction, it has a structure in which the maximum axial displacement of the joint is regulated by the circlip 32. That is, an annular groove portion 33 is formed on the opening side of the inner peripheral surface 26 of the outer ring 21, and a circlip 32 is fitted into the annular groove portion 33. The circlip 32 is an elastic split ring (see the broken line in FIG. 2). When the circlip 32 is slightly reduced in the radial direction and attached to the annular groove 33, the circlip 32 is fitted into the annular groove 33 with its self-restoring force. Is possible.

このような構造を採用することにより、内輪２２、ケージ２４およびボール２３からなる内部部品が軸方向に変位するに際して、その内部部品のボール２３がサークリップ３２に干渉することにより、外輪２１のトラック溝２５に配されたボール２３が外輪２１の開口側から飛び出すスライドオーバーを規制するようにしている。   By adopting such a structure, when the internal part consisting of the inner ring 22, the cage 24 and the ball 23 is displaced in the axial direction, the ball 23 of the inner part interferes with the circlip 32, so that the track of the outer ring 21 is obtained. The ball 23 arranged in the groove 25 regulates the slide over that jumps out from the opening side of the outer ring 21.

例えばプロペラシャフトに使用される摺動式等速自在継手（ＤＯＪ）では、外輪２１に内輪２２、ケージ２４、ボール２３等を組み付けたＤＯＪサブアッセンブリ体と、外輪２１に溶接接合されるチューブを含めた総アッセンブリ体とでは、製造メーカが異なる場合があり、その場合、ＤＯＪサブアッセンブリ体の製造メーカでは、各構成部品のマッチングを行うことにより各種すきま等が適切となるようにＤＯＪサブアッセンブリ体を組み立てた上で、内輪２２、ケージ２４およびボール２３からなる内部部品がバラバラにならないように外輪２１の内周面２６の開口側に位置する環状溝部３３にサークリップ３２を装着した状態で、総アッセンブリ体の製造メーカに出荷する。   For example, a sliding type constant velocity universal joint (DOJ) used for a propeller shaft includes a DOJ sub-assembly body in which an inner ring 22, a cage 24, a ball 23 and the like are assembled to an outer ring 21, and a tube welded to the outer ring 21. The manufacturer may be different from the total assembly body. In that case, the manufacturer of the DOJ subassembly body should make the DOJ subassembly body suitable for various clearances by matching each component. After assembling, the circlip 32 is attached to the annular groove portion 33 located on the opening side of the inner peripheral surface 26 of the outer ring 21 so that the inner parts composed of the inner ring 22, the cage 24 and the ball 23 do not fall apart. Ship to assembly manufacturers.

一方、総アッセンブリ体の製造メーカでは、外輪２１からサークリップ３２を取り外した上で、内輪２２、ケージ２４およびボール２３からなる内部部品をカセット状態で外輪２１から取り出し、例えばシャフトを内輪２２に嵌合したり、外輪２１にチューブを接合したりして他の部品を組み付けた上で、再度、前述の内部部品およびサークリップ３２を外輪２１に組み込むようにしている。このように総アッセンブリ体の製造メーカでは、ＤＯＪサブアッセンブリ体を一旦分解することから、外輪２１から内部部品を取り出すに際しては、サークリップ３２を一旦取り外す必要がある。   On the other hand, the manufacturer of the total assembly body removes the circlip 32 from the outer ring 21 and takes out the internal parts including the inner ring 22, the cage 24 and the balls 23 from the outer ring 21 in a cassette state. The above-mentioned internal parts and the circlip 32 are again incorporated into the outer ring 21 after the other parts are assembled by combining them or by joining a tube to the outer ring 21. Thus, since the manufacturer of the total assembly body disassembles the DOJ subassembly body once, when removing the internal parts from the outer ring 21, it is necessary to remove the circlip 32 once.

そこで、この実施形態における等速自在継手では、サークリップ３２が嵌合された環状溝部３３の外輪反開口側に、サークリップ３２を取り外すための一般治具が挿入可能な隙間３４を形成している。この隙間３４は、外輪２１の円筒状内周面２６の全周に亘って形成され、その環状溝部３３の外輪反開口側を拡開させたテーパ面３５で構成されている。   Therefore, in the constant velocity universal joint in this embodiment, a gap 34 into which a general jig for removing the circlip 32 can be inserted is formed on the side opposite to the outer ring opening of the annular groove 33 in which the circlip 32 is fitted. Yes. The gap 34 is formed over the entire circumference of the cylindrical inner peripheral surface 26 of the outer ring 21, and is constituted by a tapered surface 35 that widens the side opposite to the outer ring of the annular groove 33.

このように外輪２１の環状溝部３３の反開口側に、外輪２１の円筒状内周面２６の全周に亘って形成され、その環状溝部３３の外輪反開口側を拡開させたテーパ面３５で構成された隙間３４を形成したことにより、総アッセンブリ体の製造メーカでは、ＤＯＪサブアッセンブリ体の分解のため、外輪２１からサークリップ３２を一旦取り外すに際して、外輪２１の反開口側から、例えばドライバ等の一般治具を環状溝部３３の隙間３４に挿入するだけでサークリップ３２を半径方向内側に簡単かつ容易に引き起こすことができる。   In this manner, the tapered surface 35 formed on the opposite side of the annular groove 33 of the outer ring 21 over the entire circumference of the cylindrical inner peripheral surface 26 of the outer ring 21, and widens the opposite side of the outer ring of the annular groove 33. When the total assembly body manufacturer removes the circlip 32 from the outer ring 21 to disassemble the DOJ subassembly body, for example, from the opposite side of the outer ring 21 to the driver, The circlip 32 can be easily and easily raised radially inward simply by inserting a general jig such as the above into the gap 34 of the annular groove 33.

また、外輪２１の円筒状内周面２６の全周に亘って隙間３４を形成しておけば、外輪２１の円周方向のいずれの位置であっても、サークリップ３２の取り外しが可能となる。また、環状溝部３３の外輪反開口側を拡開させたテーパ面３５で隙間３４を構成すれば、隙間３４を容易に形成することができ、しかも、ドライバ等の一般治具をテーパ面３５に沿って挿入すれば、その治具の挿入が容易となる。   Further, if the gap 34 is formed over the entire circumference of the cylindrical inner peripheral surface 26 of the outer ring 21, the circlip 32 can be removed at any position in the circumferential direction of the outer ring 21. . Further, if the gap 34 is formed by the tapered surface 35 in which the opposite side of the outer ring of the annular groove 33 is widened, the gap 34 can be easily formed, and a general jig such as a driver can be formed on the tapered surface 35. If it is inserted along, the jig can be easily inserted.

なお、環状溝部３３の外輪開口側については、その環状溝部３３にサークリップ３２が埋没した状態を維持しているので、ボール２３が外輪２１の開口側から飛び出すスライドオーバーを規制する機能が確保されている。   Since the circlip 32 is embedded in the annular groove 33 on the outer ring opening side of the annular groove 33, the function of restricting the slide over that the ball 23 jumps out from the opening side of the outer ring 21 is secured. ing.

前述した実施形態では、外輪２１の円筒状内周面２６の全周に亘って隙間３４を形成した場合について説明したが、本発明はこれに限定されることなく、この隙間３４は、必ずしも全周に亘って形成する必要がなく、外輪２１の円筒状内周面２６のいずれか一箇所あるいは複数箇所に形成するようにしてもよい。その形成箇所の位置および数は任意である。また、隙間３４は、環状溝部３３の外輪反開口側を拡開させたテーパ面３５で構成する以外に、曲面などの他の形状とすることも可能である。   In the above-described embodiment, the case where the gap 34 is formed over the entire circumference of the cylindrical inner peripheral surface 26 of the outer ring 21 has been described. However, the present invention is not limited to this, and the gap 34 is not necessarily limited to the entire circumference. It is not necessary to form it over the circumference, and it may be formed at any one place or a plurality of places on the cylindrical inner circumferential surface 26 of the outer ring 21. The position and number of the formation place are arbitrary. Further, the gap 34 can be formed in other shapes such as a curved surface, in addition to the tapered surface 35 in which the outer ring opposite opening side of the annular groove 33 is widened.

また、本発明はプロペラシャフト用だけでなくドライブシャフト用の摺動式等速自在継手にも適用可能であり、ドライブシャフト用のＤＯＪサブアッセンブリ体や各部品を総組立メーカ等に単品供給し、その供給先で総アッセンブリ体に組立てる場合などにも利用できる。   Further, the present invention can be applied not only to a propeller shaft but also to a sliding type constant velocity universal joint for a drive shaft. The drive shaft DOJ sub-assembly body and each part are supplied separately to a total assembly manufacturer, It can also be used when assembling the entire assembly at the supply destination.

本発明の実施形態で、摺動式等速自在継手の全体構成を示し、図２のＡ−Ｏ−Ｂ線に沿う断面図である。FIG. 3 is a cross-sectional view taken along the line AOB in FIG. 2, showing the overall configuration of the sliding type constant velocity universal joint in the embodiment of the present invention. 図１の左側面図である。It is a left view of FIG. 図１のＸ部の拡大図である。It is an enlarged view of the X section of FIG. 従来の摺動式等速自在継手の全体構成を示し、図５のＣ−Ｏ−Ｄ線に沿う断面図である。It is sectional drawing which shows the whole structure of the conventional sliding type constant velocity universal joint, and follows the COD line of FIG. 図４の左側面図である。FIG. 5 is a left side view of FIG. 4. 図４のＹ部の拡大図である。It is an enlarged view of the Y section of FIG.

符号の説明Explanation of symbols

２１ 外方部材（外輪）
２２ 内方部材（内輪）
２３ ボール
２４ ケージ
２５ トラック溝
２６ 円筒状内周面
２７ トラック溝
２８ 球面状外周面
３２ サークリップ
３３ 環状溝部
３４ 隙間
３５ テーパ面

21 Outer member (outer ring)
22 Inner member (inner ring)
23 Ball 24 Cage 25 Track groove 26 Cylindrical inner peripheral surface 27 Track groove 28 Spherical outer peripheral surface 32 Circlip 33 Annular groove portion 34 Gap 35 Tapered surface

Claims (2)

円筒状内周面に複数の直線状トラック溝が軸方向に沿って形成された外方部材と、球面状外周面に複数の直線状トラック溝が軸方向に沿って形成された内方部材と、前記外方部材のトラック溝と前記内方部材のトラック溝との間に介在して対をなす両トラック溝で形成されるボールトラックに配された複数のトルク伝達ボールと、前記外方部材の円筒状内周面と内方部材の球面状外周面との間に介在してトルク伝達ボールを保持するケージとを備え、前記外方部材の内周面開口側に形成された環状溝部に前記トルク伝達ボールの飛び出しを規制するサークリップが嵌合された摺動式等速自在継手において、
前記サークリップが嵌合された環状溝部の外方部材開口側はその環状溝部にサークリップが埋没した状態で、前記環状溝部の外方部材反開口側に、前記サークリップを取り外すための治具が挿入可能な隙間を形成し、前記隙間は、環状溝部の外方部材反開口側を拡開させたテーパ面で構成されていることを特徴とする摺動式等速自在継手。 An outer member in which a plurality of linear track grooves are formed along the axial direction on the cylindrical inner peripheral surface, and an inner member in which a plurality of linear track grooves are formed along the axial direction on the spherical outer peripheral surface; A plurality of torque transmitting balls disposed on a ball track formed by a pair of track grooves interposed between a track groove of the outer member and a track groove of the inner member; and the outer member And a cage for holding a torque transmitting ball interposed between the cylindrical inner peripheral surface of the inner member and the spherical outer peripheral surface of the inner member, and an annular groove formed on the inner peripheral surface opening side of the outer member. In a sliding type constant velocity universal joint fitted with a circlip that restricts the jumping out of the torque transmitting ball,
A jig for removing the circlip on the outer member opposite opening side of the annular groove with the circlip embedded in the annular groove on the outer member opening side of the annular groove to which the circlip is fitted A sliding type constant velocity universal joint is characterized in that a gap is formed in which a gap can be inserted, and the gap is formed by a tapered surface in which the opposite side of the outer groove of the annular groove is widened . 前記隙間は、外方部材の円筒状内周面の全周に亘って形成されている請求項１に記載の摺動式等速自在継手。   The sliding constant velocity universal joint according to claim 1, wherein the gap is formed over the entire circumference of the cylindrical inner peripheral surface of the outer member.
JP2005323799A 2005-11-08 2005-11-08 Sliding constant velocity universal joint Expired - Fee Related JP4637723B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005323799A JP4637723B2 (en) 2005-11-08 2005-11-08 Sliding constant velocity universal joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005323799A JP4637723B2 (en) 2005-11-08 2005-11-08 Sliding constant velocity universal joint

Publications (2)

Publication Number Publication Date
JP2007132377A JP2007132377A (en) 2007-05-31
JP4637723B2 true JP4637723B2 (en) 2011-02-23

Family

ID=38154208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005323799A Expired - Fee Related JP4637723B2 (en) 2005-11-08 2005-11-08 Sliding constant velocity universal joint

Country Status (1)

Country Link
JP (1) JP4637723B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11073179B2 (en) 2016-05-11 2021-07-27 Ntn Corporation Sliding-type constant velocity universal joint and method for manufacturing same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134518U (en) * 1979-03-15 1980-09-24
JPS55147531U (en) * 1979-04-11 1980-10-23
JPH0444522U (en) * 1990-08-20 1992-04-15
JPH04117926U (en) * 1991-04-03 1992-10-22 豊田工機株式会社 Constant velocity joint
JP2000074084A (en) * 1998-08-28 2000-03-07 Toyoda Mach Works Ltd Falling stop device and constant velocity joint
JP2001153119A (en) * 1999-11-29 2001-06-08 Fujikura Rubber Ltd Slip preventing ring and method of manufacturing therefor
JP2003127608A (en) * 2001-10-22 2003-05-08 Nsk Ltd Wheel rotation supporting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134518U (en) * 1979-03-15 1980-09-24
JPS55147531U (en) * 1979-04-11 1980-10-23
JPH0444522U (en) * 1990-08-20 1992-04-15
JPH04117926U (en) * 1991-04-03 1992-10-22 豊田工機株式会社 Constant velocity joint
JP2000074084A (en) * 1998-08-28 2000-03-07 Toyoda Mach Works Ltd Falling stop device and constant velocity joint
JP2001153119A (en) * 1999-11-29 2001-06-08 Fujikura Rubber Ltd Slip preventing ring and method of manufacturing therefor
JP2003127608A (en) * 2001-10-22 2003-05-08 Nsk Ltd Wheel rotation supporting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11073179B2 (en) 2016-05-11 2021-07-27 Ntn Corporation Sliding-type constant velocity universal joint and method for manufacturing same

Also Published As

Publication number Publication date
JP2007132377A (en) 2007-05-31

Similar Documents

Publication Publication Date Title
WO2007074630A1 (en) Constant velocity universal joint and inner member of the same
JP2007100797A (en) Slide type constant velocity universal joint
JP2008082393A (en) Driving shaft for automobile
JP2009085380A (en) Constant velocity universal joint
JP4637723B2 (en) Sliding constant velocity universal joint
JP2011080556A (en) Constant velocity universal joint, drive shaft assembly and propeller shaft
JP4579112B2 (en) Sliding type constant velocity universal joint and manufacturing method thereof
JP2008256180A (en) Fixed type constant velocity universal joint and its assembling method
JP2007032645A (en) Sliding type constant velocity universal joint
JP2010127311A (en) Fixed type constant velocity universal joint and wheel bearing device using the same
JP2009074594A (en) Sliding type constant velocity universal joint
KR102301016B1 (en) Constant velocity joint
JP2008183991A (en) Rear wheel bearing device and drive shaft
JP2010025207A (en) Constant velocity universal joint
JP7224107B2 (en) Sliding constant velocity universal joint for rear wheel drive shaft
JP2007010080A (en) Sliding constant velocity universal joint
JP2008196591A (en) Fixed type constant velocity universal joint and its manufacturing method
JP2008002666A (en) Drive shaft
JP5133203B2 (en) Sliding constant velocity universal joint and manufacturing method thereof
JP7292008B2 (en) Sliding constant velocity universal joint for rear wheel drive shaft
JP2011122614A (en) Constant velocity universal joint
JP5133206B2 (en) Sliding constant velocity universal joint and manufacturing method thereof
JP6736509B2 (en) Fixed type constant velocity universal joint used for rear wheel drive shaft
JP2010047043A (en) Bearing device for driving wheel, and axle unit equipped with the bearing device
JP4588591B2 (en) Fixed type constant velocity universal joint and manufacturing method thereof

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080919

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20091106

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100317

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100318

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100511

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20101108

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20101124

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131203

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees