JP2000291680A - Double cardan joint - Google Patents
Double cardan jointInfo
- Publication number
- JP2000291680A JP2000291680A JP11105094A JP10509499A JP2000291680A JP 2000291680 A JP2000291680 A JP 2000291680A JP 11105094 A JP11105094 A JP 11105094A JP 10509499 A JP10509499 A JP 10509499A JP 2000291680 A JP2000291680 A JP 2000291680A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- yoke
- peripheral surface
- inner peripheral
- double cardan
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 26
- 238000005452 bending Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/30—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected in which the coupling is specially adapted to constant velocity-ratio
- F16D3/32—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected in which the coupling is specially adapted to constant velocity-ratio by the provision of two intermediate members each having two relatively perpendicular trunnions or bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車の車輪伝動
系など、屈曲した軸伝動構造における等速伝動に用いら
れるダブルカルダンジョイントに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double cardan joint used for constant speed transmission in a bent shaft transmission structure such as a vehicle wheel transmission system.
【０００２】[0002]
【従来の技術】図５に従来のダブルカルダンジョイント
の一例を示している。図例のダブルカルダンジョイント
は、ピンヨーク２１とソケットヨーク２２とを、カップ
リングヨーク２４および２つのクロスベアリング２５，
２６を介して屈曲自在に連結した構成である。2. Description of the Related Art FIG. 5 shows an example of a conventional double cardan joint. The double cardan joint shown in the figure includes a pin yoke 21 and a socket yoke 22, a coupling yoke 24 and two cross bearings 25,
It is configured to be flexibly connected via a cable 26.
【０００３】そして、ピンヨーク２１のピン２７と、ソ
ケットヨーク２２の筒部２９との間には、球面軸受を構
成するボール２３およびボールシート３０が介装されて
いる。ボール２３は、ピンヨーク２１のピン２７に対し
てニードル軸受２８を介して回転自在に外嵌されてお
り、また、ボールシート３０は、ソケットヨーク２２の
筒部２９に対して内嵌固定されており、ボール２３とボ
ールシート３０とが摺動するようになっている。[0003] A ball 23 and a ball seat 30 constituting a spherical bearing are interposed between the pin 27 of the pin yoke 21 and the cylindrical portion 29 of the socket yoke 22. The ball 23 is rotatably fitted to the pin 27 of the pin yoke 21 via a needle bearing 28, and the ball seat 30 is fitted and fixed to the cylindrical portion 29 of the socket yoke 22. The ball 23 and the ball seat 30 slide.
【０００４】ところで、上記球面軸受の摺動部位に対し
て水や異物を侵入させないようにするために、下記する
ような球面シール３１およびダストカバー３２が装備さ
れている。Incidentally, a spherical seal 31 and a dust cover 32 described below are provided in order to prevent water or foreign matter from entering the sliding portion of the spherical bearing.
【０００５】球面シール３１は、ソケットヨーク２２の
筒部２９の端部内周に圧入固定されており、ボール２３
の外面に対して摺接させられるようになっている。ま
た、ダストカバー３２は、ピンヨーク２１側の端面にお
いてピン２８を囲む位置に取り付けられており、ソケッ
トヨーク２２の筒部２９の外周面に対して摺接させられ
るようになっている。The spherical seal 31 is press-fitted and fixed to the inner periphery of the end of the cylindrical portion 29 of the socket yoke 22.
To be in sliding contact with the outer surface of the. The dust cover 32 is attached at a position surrounding the pin 28 on the end surface on the pin yoke 21 side, and is slidably contacted with the outer peripheral surface of the cylindrical portion 29 of the socket yoke 22.
【０００６】[0006]
【発明が解決しようとする課題】上記従来例では、球面
軸受の摺動部位を保護する構造について不満がある。In the above conventional example, there is dissatisfaction with the structure for protecting the sliding portion of the spherical bearing.
【０００７】まず、ダストカバー３２は、両ヨーク２
１，２２の屈曲に伴って筒部２９の外周面に摺接追従す
るように、金属芯に合成ゴムなどの柔軟なリップ部を筒
状に焼き付け形成したものであるが、摺接部位によって
接触圧が変わり、一定しないものであった。[0007] First, the dust cover 32 is
A flexible lip made of synthetic rubber or the like is baked and formed on the metal core so as to follow the outer peripheral surface of the cylindrical portion 29 in sliding contact with the bending of the cylinders 1 and 22. The pressure changed and was not constant.
【０００８】というのは、ソケットヨーク２２の筒部２
９は、その強度を維持するために根元側の肉厚が先端側
の肉厚より大きく、その外周面が球面とはなっていな
い。詳しくは、筒部２９の先端側の外周面は球面となっ
ているが、根元側の外周面は円筒面に近いものである。
そのために、ダストカバー３２のリップ部が筒部２９の
先端側に作用する時にはリップ部の締め代が少なくなっ
て接触圧が小さくなり、逆に、筒部２９の根元側に作用
する時にはリップ部の締め代が多くなって接触圧が大き
くなるものであった。従って、筒部２９の先端側に作用
する時の接触圧を適正接触圧に設定すると、筒部２９の
根元側に作用する時の接触圧が過大となって、ダストカ
バー３２の耐久性が低下し、逆に、筒部２９の根元側に
作用する時の接触圧を適正接触圧に設定すると、筒部２
９の先端側に作用する時の接触圧が過小となってシール
性が低下する。This is because the cylindrical portion 2 of the socket yoke 22
In No. 9, the thickness at the base is larger than the thickness at the tip in order to maintain the strength, and the outer peripheral surface is not spherical. Specifically, the outer peripheral surface on the distal end side of the cylindrical portion 29 is spherical, but the outer peripheral surface on the root side is close to a cylindrical surface.
Therefore, when the lip portion of the dust cover 32 acts on the distal end side of the cylindrical portion 29, the interference of the lip portion is reduced and the contact pressure is reduced. And the contact pressure increased. Therefore, when the contact pressure acting on the tip side of the cylindrical portion 29 is set to an appropriate contact pressure, the contact pressure acting on the root side of the cylindrical portion 29 becomes excessive, and the durability of the dust cover 32 decreases. Conversely, if the contact pressure acting on the root side of the cylindrical portion 29 is set to an appropriate contact pressure, the cylindrical portion 2
9, the contact pressure when acting on the tip side becomes too small, and the sealing performance is reduced.
【０００９】また、ダストカバー３２は、ピンヨーク２
１の回転遠心力により径方向外方に広がりやすいため
に、接触圧が減少してシール性が低下するおそれがあ
る。Further, the dust cover 32 is
Since it is easy to spread radially outward due to the rotational centrifugal force of 1, there is a possibility that the contact pressure is reduced and the sealing performance is reduced.
【００１０】このような事情に鑑み、本発明は、ダブル
カルダンジョイントにおいて、屈曲作動にかかわらず常
に安定した接触圧を得ることができるとともに、回転遠
心力による悪影響を受けることなく球面軸受部位を保護
できるようにすることを目的としている。In view of such circumstances, the present invention provides a double cardan joint which can always obtain a stable contact pressure irrespective of the bending operation and protects the spherical bearing portion without being adversely affected by the rotational centrifugal force. The purpose is to be able to.
【００１１】[0011]
【課題を解決するための手段】請求項１の発明にかかる
ダブルカルダンジョイントは、ピンヨークとソケットヨ
ークとを球面軸受を介して屈曲自在に結合するととも
に、ソケットヨークに設けた筒部の端部に、球面軸受に
摺接する球面シールを装着してなるもので、前記ピンヨ
ーク側に、前記ソケットヨークの筒部を外囲する環状部
が設けられ、この環状部の内周面が、ジョイント中心と
同心の凹入球面に形成され、前記筒部の端部に、前記環
状部における内周面に対して接触させられるシールが設
けられている。A double cardan joint according to the first aspect of the present invention connects a pin yoke and a socket yoke via a spherical bearing so as to be freely bent, and connects the pin yoke and the socket yoke to an end of a cylindrical portion provided on the socket yoke. A spherical seal that is in sliding contact with the spherical bearing is provided. An annular portion surrounding the cylindrical portion of the socket yoke is provided on the pin yoke side, and an inner peripheral surface of the annular portion is concentric with the center of the joint. A seal is formed at the end of the cylindrical portion and is brought into contact with the inner peripheral surface of the annular portion.
【００１２】請求項２の発明にかかるダブルカルダンジ
ョイントは、上記請求項１のシールを、前記筒部の端部
外面に付設されるものとしている。In a double cardan joint according to a second aspect of the present invention, the seal of the first aspect is attached to an outer surface of an end of the cylindrical portion.
【００１３】請求項３の発明にかかるダブルカルダンジ
ョイントは、上記請求項１のシールを、前記球面シール
に一体的に形成されるものとしている。According to a third aspect of the present invention, there is provided a double cardan joint, wherein the seal of the first aspect is formed integrally with the spherical seal.
【００１４】以上、本発明の構成によると、ピンヨーク
とソケットヨークの屈曲に伴って、ソケットヨーク側の
筒部に備えたシールが、ピンヨーク側の環状部の内周面
に摺接移動するが、この内周面がジョイント中心と同心
の凹入球面であるために、どの摺接位置でもシールの締
め代はほぼ均一に保たれる。また、ソケットヨークの回
転に伴ってシールに遠心力が働くと、環状体の内周面へ
の接触圧が高まる傾向となり、密封性が向上する。As described above, according to the structure of the present invention, the seal provided on the cylindrical portion on the socket yoke side slides on the inner peripheral surface of the annular portion on the pin yoke side as the pin yoke and the socket yoke are bent. Since this inner peripheral surface is a concave spherical surface concentric with the center of the joint, the interference of the seal is kept almost uniform at any sliding contact position. In addition, when centrifugal force acts on the seal with the rotation of the socket yoke, the contact pressure on the inner peripheral surface of the annular body tends to increase, and the sealing performance is improved.
【００１５】また、請求項２の発明のように、シールを
筒部の外周部に焼き付けあるいは接着などによって付設
すれば、位置ずれしにくくなる。Further, if the seal is attached to the outer peripheral portion of the cylindrical portion by baking or bonding, as in the second aspect of the present invention, the position is hardly shifted.
【００１６】また、請求項３の発明のように、シールを
球面シールと一体に形成すれば、球面シールの製造時に
同時に形成できるので、部品数を減らせるとともに、設
置作業を省けるようになる。If the seal is formed integrally with the spherical seal as in the third aspect of the present invention, the seal can be formed simultaneously with the manufacture of the spherical seal, so that the number of parts can be reduced and the installation work can be omitted.
【００１７】[0017]
【発明の実施の形態】本発明の詳細を図面に示す実施形
態に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described based on embodiments shown in the drawings.
【００１８】図１および図２に本発明の一実施形態を示
している。図１は、ダブルカルダンジョイントを示す半
断面図、図２は、図１のジョイント部分の拡大図であ
る。FIGS. 1 and 2 show an embodiment of the present invention. FIG. 1 is a half sectional view showing a double cardan joint, and FIG. 2 is an enlarged view of a joint part of FIG.
【００１９】図例のダブルカルダンジョイントの基本構
成は、上述した従来構造と同じであり、ピンヨーク１と
ソケットヨーク２とを、主としてカップリングヨーク４
ならびに２つのクロスベアリング５，６を介して屈曲自
在に連結した構成である。The basic structure of the double cardan joint shown in the figure is the same as that of the conventional structure described above, and the pin yoke 1 and the socket yoke 2 are mainly composed of a coupling yoke 4.
Further, it is configured to be flexibly connected via two cross bearings 5 and 6.
【００２０】そして、ピンヨーク１のピン７と、ソケッ
トヨーク２の筒部９との間には、球面軸受を構成するボ
ール３およびボールシート１０が介装されている。ボー
ル３は、ピンヨーク１のピン７に対してニードル軸受８
を介して回転自在に外嵌されており、また、ボールシー
ト１０は、ソケットヨーク２の筒部９に対して内嵌固定
されており、ボール３とボールシート１０とが摺動する
ようになっている。A ball 3 and a ball seat 10 constituting a spherical bearing are interposed between the pin 7 of the pin yoke 1 and the cylindrical portion 9 of the socket yoke 2. The ball 3 has a needle bearing 8 with respect to the pin 7 of the pin yoke 1.
The ball seat 10 is fixedly fitted inside the cylindrical portion 9 of the socket yoke 2 so that the ball 3 and the ball seat 10 slide. ing.
【００２１】本発明では、上記球面軸受の摺動部位を保
護するための構造が従来例と相違している。但し、球面
シール１１については、従来例と同じものを用いている
が、従来例のダストカバーの代わりに、ピンヨーク１の
端面においてピン７の外周側に環状部１２を一体的に設
け、この環状部１２の内周面に対してソケットヨーク２
の筒部９の先端側外周面に設けたシール１３を接触させ
るようにしている。In the present invention, the structure for protecting the sliding portion of the spherical bearing is different from the conventional example. However, the spherical seal 11 is the same as that of the conventional example, but instead of the dust cover of the conventional example, an annular portion 12 is integrally provided on the end face of the pin yoke 1 on the outer peripheral side of the pin 7. Socket yoke 2 against the inner peripheral surface of portion 12
The seal 13 provided on the outer peripheral surface on the distal end side of the cylindrical portion 9 is brought into contact with the cylindrical portion 9.
【００２２】詳しくは、上記環状部１２は、ソケットヨ
ーク２の筒部９を外囲するように突設され、その内周面
１２ａが、ジョイント中心Ｐと同心の凹入球面に構成さ
れている。More specifically, the annular portion 12 is provided so as to surround the cylindrical portion 9 of the socket yoke 2, and its inner peripheral surface 12a is formed as a concave spherical surface concentric with the center P of the joint. .
【００２３】また、上記シール体１３は、合成ゴム等の
柔軟な材料でリップ状に形成され、筒部９の先端外周面
に焼き付け、あるいは、接着によって固定されている。
このシール体１３のリップ部先端は、環状部１２の内周
面１２ａに適当な締め代をもって摺接可能に接触されて
いる。The seal body 13 is formed in a lip shape from a flexible material such as synthetic rubber, and is fixed to the outer peripheral surface of the distal end of the cylindrical portion 9 by baking or bonding.
The tip of the lip of the seal 13 is slidably contacted with the inner peripheral surface 12a of the annular portion 12 with an appropriate interference.
【００２４】このように、シール体１３を環状部１２の
内周面１２ａに接触させることで、ピンヨーク１とソケ
ットヨーク２とがどのように屈曲されても、シール体１
３を環状部１２の内周面１２ａに安定した接触圧で摺接
させることができる。また。シール体１３が回転に伴う
遠心力を受けても、環状部１２の内周面１２ａへの接触
圧が高まって、むしろシール機能が高められる。As described above, by bringing the seal 13 into contact with the inner peripheral surface 12a of the annular portion 12, the seal 1 can be bent no matter how the pin yoke 1 and the socket yoke 2 are bent.
3 can be brought into sliding contact with the inner peripheral surface 12a of the annular portion 12 with a stable contact pressure. Also. Even if the seal body 13 receives centrifugal force due to rotation, the contact pressure on the inner peripheral surface 12a of the annular portion 12 increases, and the sealing function is rather enhanced.
【００２５】なお、本発明は、上記実施形態のみに限定
されない。The present invention is not limited only to the above embodiment.
【００２６】（１） 上記実施形態でのシール１３は、
図３に示すように、球面シール１１に付設することがで
きる。この場合だと、ソケットヨーク２の筒部９に対し
て球面シール１１を圧入装着することによって、シール
１３を所要の位置に装着することができる。(1) The seal 13 in the above embodiment is
As shown in FIG. 3, it can be attached to the spherical seal 11. In this case, the seal 13 can be mounted at a required position by press-fitting the spherical seal 11 into the cylindrical portion 9 of the socket yoke 2.
【００２７】（２） 上記実施形態での環状部１２は、
ピンヨーク１と別体で構成して、従来のダストカバーと
同様の形態で、ピンヨーク１に取り付けるようにしても
よい。例えば、図４（ａ）、（ｂ）に示すように、ピン
ヨーク１の端面に段部１ａを設け、この段部１ａに対し
て環状部１２を圧入により嵌合固定したり、あるいは嵌
入後にスポット溶接やかしめなどにより固定したりする
ことができる。(2) The annular portion 12 in the above embodiment is
It may be configured separately from the pin yoke 1 and attached to the pin yoke 1 in the same form as the conventional dust cover. For example, as shown in FIGS. 4A and 4B, a step portion 1a is provided on the end surface of the pin yoke 1, and the annular portion 12 is fitted and fixed to the step portion 1a by press-fitting, or spotted after the fitting. It can be fixed by welding or swaging.
【００２８】[0028]
【発明の効果】請求項１ないし３の発明では、ジョイン
トがどのように屈曲されてもシールの締め代を均一にで
き、安定した密封性能を発揮させることができるととも
に、回転に伴う遠心力による悪影響を受けることもな
く、むしろ、密封性能を高めることができるようになっ
た。According to the first to third aspects of the present invention, the tightness of the seal can be made uniform no matter how the joint is bent, and a stable sealing performance can be exhibited. The sealing performance can be enhanced without being adversely affected.
【００２９】特に、請求項２の発明のように、シールを
筒部に対して焼き付けあるいは接着によって付設すれ
ば、位置ずれしにくくなる。In particular, if the seal is attached to the cylindrical portion by baking or bonding, the position is less likely to shift.
【００３０】また、請求項３の発明のように、シールを
球面シールと一体に形成すれば、球面シールの製造時に
同時に形成できるので、部品数を減らせるとともに、設
置作業を省けるようになり、実用性において優れたもの
となる。If the seal is formed integrally with the spherical seal as in the third aspect of the present invention, the seal can be formed at the same time as the manufacture of the spherical seal, so that the number of parts can be reduced and the installation work can be omitted. It is excellent in practicality.
【図１】本発明の一実施形態のダブルカルダンジョイン
トを示す半断面図FIG. 1 is a half sectional view showing a double cardan joint according to an embodiment of the present invention.
【図２】図１のジョイント部分の拡大図FIG. 2 is an enlarged view of a joint part of FIG. 1;
【図３】本発明の第２の実施形態で、図２に対応する図FIG. 3 is a view corresponding to FIG. 2 in a second embodiment of the present invention;
【図４】本発明の第３の実施形態で、図２に対応する図FIG. 4 is a view corresponding to FIG. 2 in a third embodiment of the present invention;
【図５】従来のダブルカルダンジョイントを示す半断面
図FIG. 5 is a half sectional view showing a conventional double cardan joint.
１ ピンヨーク ２ ソケットヨーク ７ ピンヨークのピン ９ ソケットヨークの筒部 １１ 球面シール １２ 環状部 １３ シール DESCRIPTION OF SYMBOLS 1 Pin yoke 2 Socket yoke 7 Pin of pin yoke 9 Tube part of socket yoke 11 Spherical seal 12 Annular part 13 Seal
Claims (3)
受を介して屈曲自在に結合するとともに、ソケットヨー
クに設けた筒部の端部に、球面軸受に摺接する球面シー
ルを装着してなるダブルカルダンジョイントであって、 前記ピンヨーク側に、前記ソケットヨークの筒部を外囲
する環状部が設けられ、この環状部の内周面が、ジョイ
ント中心と同心の凹入球面に形成され、 前記筒部の端部に、前記環状部における内周面に対して
接触させられるシールが設けられている、ことを特徴と
するダブルカルダンジョイント。1. A double cardan joint wherein a pin yoke and a socket yoke are flexibly connected via a spherical bearing, and a spherical seal which is in sliding contact with the spherical bearing is attached to an end of a cylindrical portion provided on the socket yoke. An annular portion surrounding the cylindrical portion of the socket yoke is provided on the pin yoke side, and an inner peripheral surface of the annular portion is formed as a concave spherical surface concentric with a joint center. A double cardan joint, wherein a seal is provided at an end to be brought into contact with an inner peripheral surface of the annular portion.
おいて、 前記シールが、前記筒部の端部外面に付設されている、
ことを特徴とするダブルカルダンジョイント。2. The double cardan joint according to claim 1, wherein the seal is provided on an outer surface of an end of the cylindrical portion.
A double cardan joint characterized by the following:
おいて、 前記シールが、前記球面シールに一体的に形成されてい
る、ことを特徴とするダブルカルダンジョイント。3. The double cardan joint according to claim 1, wherein the seal is formed integrally with the spherical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10509499A JP3905243B2 (en) | 1999-04-13 | 1999-04-13 | Double cardan joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10509499A JP3905243B2 (en) | 1999-04-13 | 1999-04-13 | Double cardan joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000291680A true JP2000291680A (en) | 2000-10-20 |
| JP3905243B2 JP3905243B2 (en) | 2007-04-18 |
Family
ID=14398335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10509499A Expired - Fee Related JP3905243B2 (en) | 1999-04-13 | 1999-04-13 | Double cardan joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3905243B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101294070B1 (en) | 2011-12-12 | 2013-08-07 | 현대자동차주식회사 | Active geometry control suspension system |
-
1999
- 1999-04-13 JP JP10509499A patent/JP3905243B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3905243B2 (en) | 2007-04-18 |
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