JP2001165142A - Eccentric cam gear device - Google Patents
Eccentric cam gear deviceInfo
- Publication number
- JP2001165142A JP2001165142A JP35289799A JP35289799A JP2001165142A JP 2001165142 A JP2001165142 A JP 2001165142A JP 35289799 A JP35289799 A JP 35289799A JP 35289799 A JP35289799 A JP 35289799A JP 2001165142 A JP2001165142 A JP 2001165142A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- storage chamber
- shaft
- eccentric
- peripheral surface
- 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.)
- Pending
Links
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Support Of The Bearing (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば四輪操舵機
構を搭載する車両において、リア側操舵機構などに好適
に採用される偏心カムギア装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eccentric cam gear device suitably used for a rear steering mechanism in a vehicle equipped with, for example, a four-wheel steering mechanism.
【０００２】[0002]
【従来の技術】従来より、例えば四輪操舵機構を搭載す
る車両において、後輪の操舵角を変更するために用いら
れる偏心カムギア装置が知られている。この偏心カムギ
ア装置は、図３及び図４に示すように、軸方向の一端側
に設けられその外周面が取付部に嵌合保持される軸状保
持部５１と該軸状保持部５１の内部に軸状保持部５１と
偏心して形成された円孔よりなる収納室５５と軸方向の
他端面の外周部に設けられたギア部５４とを有するギア
回転体５と、収納室５５内に壁面と距離を隔てて収納配
置され球面よりなる外周面を有する金属製の内側摺動部
６１と該内側摺動部６１に一端が連結されるとともに他
端が収納室５５の開口から突出する偏心軸部６５とを有
する偏心連結部材６と、内側摺動部６１と球面接触して
内側摺動部６１を摺動可能に保持し収納室５５に圧入に
より嵌合配置された金属製の外側摺動部材７とから構成
されている。2. Description of the Related Art Conventionally, an eccentric cam gear device used for changing a steering angle of a rear wheel in a vehicle equipped with, for example, a four-wheel steering mechanism has been known. As shown in FIGS. 3 and 4, the eccentric cam gear device has a shaft-like holding portion 51 provided at one end in the axial direction and having an outer peripheral surface fitted and held in a mounting portion, and an inner portion of the shaft-like holding portion 51. A gear rotating body 5 having a storage chamber 55 formed of a circular hole eccentrically formed with the shaft-shaped holding portion 51 and a gear portion 54 provided on the outer peripheral portion of the other end surface in the axial direction, and a wall surface in the storage chamber 55. And an eccentric shaft whose one end is connected to the inner sliding portion 61 and whose other end projects from the opening of the storage chamber 55. An eccentric connecting member 6 having a portion 65 and a metal outer sliding member which is spherically contacted with the inner sliding portion 61 to hold the inner sliding portion 61 in a slidable manner and which is fitted into the storage chamber 55 by press fitting. And a member 7.
【０００３】この偏心カムギア装置は、ギア回転体５の
軸状保持部５１がギアボックスの取付穴に嵌合保持され
た状態で、車体側に設けられた支持部材にギア回転体５
が回転軸Ｐを中心に回転可能に取付けられるとともに、
後輪側に設けられた連結部材に偏心軸部６５の突出先端
部が連結固定される。また、ギア回転体５のギア部５４
が、制御部によって駆動制御されるモータ８に取付けら
れたピニオンギア８１に噛合されて使用される。In this eccentric cam gear device, the gear rotator 5 is attached to a support member provided on the vehicle body in a state where the shaft-like holding portion 51 of the gear rotator 5 is fitted and held in the mounting hole of the gear box.
Is mounted rotatably about the rotation axis P,
The protruding distal end of the eccentric shaft 65 is connected and fixed to a connecting member provided on the rear wheel side. Also, the gear portion 54 of the gear rotating body 5
Is used by being meshed with a pinion gear 81 attached to the motor 8 whose drive is controlled by the control unit.
【０００４】そして、前輪の操舵角を検出するセンサや
車速を検出するセンサなどの検出情報に基づき、制御部
によりモータ８が駆動されると、ギア回転体５が正逆い
ずれかの方向に所定角度回転する。これにより、ギア回
転体５の回転軸Ｐと偏心する位置に配置された内側摺動
部６１は、外側摺動部材７の接触面と摺動しつつギア回
転体５の回転方向に追従して移動する。これに伴い、内
側摺動部６１に一端が連結されている偏心軸部６５は、
内側摺動部６１と外側摺動部材７との摺動により角度変
位が吸収され、傾くようにして内側摺動部６１の動きに
追従する。これにより、偏心軸部６５の突出先端部が連
結固定されている連結部材は、偏心軸部６５の突出先端
部の変位に応じて変位することにより、後輪が所定の方
向へ所定の角度だけ操舵されることとなる。When the motor is driven by the control unit based on detection information such as a sensor for detecting the steering angle of the front wheels and a sensor for detecting the vehicle speed, the gear rotating body 5 is moved in either the forward or reverse direction. Rotate an angle. Accordingly, the inner sliding portion 61 disposed at a position eccentric to the rotation axis P of the gear rotating body 5 follows the rotation direction of the gear rotating body 5 while sliding on the contact surface of the outer sliding member 7. Moving. Along with this, the eccentric shaft portion 65, one end of which is connected to the inner sliding portion 61,
The angular displacement is absorbed by the sliding between the inner sliding portion 61 and the outer sliding member 7 and follows the movement of the inner sliding portion 61 in a tilted manner. As a result, the connecting member, to which the protruding tip of the eccentric shaft 65 is connected and fixed, is displaced in accordance with the displacement of the protruding tip of the eccentric shaft 65, so that the rear wheel moves by a predetermined angle in a predetermined direction. It will be steered.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上記従来の
偏心カムギア装置は、外側摺動部材７がその内側に内側
摺動部６１を保持した状態で収納室５５内に圧入により
嵌合して配置されているため、外側摺動部材７から内側
摺動部６１に部分的に不均一な圧力が加わる状態になっ
たり、外側摺動部材７と内側摺動部６１の摺動トルクが
上昇するという問題があった。By the way, in the conventional eccentric cam gear device, the outer sliding member 7 is press-fitted into the storage chamber 55 in a state where the outer sliding member 7 holds the inner sliding portion 61 inside. Therefore, uneven pressure is partially applied from the outer sliding member 7 to the inner sliding portion 61, or the sliding torque between the outer sliding member 7 and the inner sliding portion 61 increases. There was a problem.
【０００６】また、ギア回転体５は、図４に示すよう
に、ニュートラル位置から左右両方向へそれぞれ回転角
度αが約５０°（２α≒１００°）となる狭い範囲で回
転するように設定されているため、外側摺動部材７と内
側摺動部６１は、摺動面の一部分にのみ大きな荷重が加
わる状態で繰り返し摺動することなる。特に、外側摺動
部材７と内側摺動部６１とが摺動するときには、偏心軸
部６５の突出先端部が連結固定された後輪側の連結部材
と外側摺動部材７との間に、両者が遠ざかる方向や両者
が近づく方向に反力が作用するため、摺動面の一部分に
のみ加わる荷重はより大きなものとなる。そのため、外
側摺動部材７と内側摺動部６１との摺動面に局部的な摩
耗が発生してしまい、その偏心カムギア装置による後輪
の操舵角制御を高精度に維持することができなくなると
いう問題があった。As shown in FIG. 4, the gear rotator 5 is set so as to rotate in a narrow range in which the rotation angle α is about 50 ° (2α ≒ 100 °) from the neutral position to both the left and right directions. Therefore, the outer sliding member 7 and the inner sliding portion 61 slide repeatedly in a state where a large load is applied only to a part of the sliding surface. In particular, when the outer sliding member 7 and the inner sliding portion 61 slide, between the outer wheel sliding member 7 and the rear wheel side connecting member to which the protruding tip of the eccentric shaft portion 65 is connected and fixed. Since a reaction force acts in a direction in which the two move away from each other and in a direction in which the two approach each other, the load applied only to a part of the sliding surface becomes larger. For this reason, local wear occurs on the sliding surface between the outer sliding member 7 and the inner sliding portion 61, and it becomes impossible to maintain the steering angle control of the rear wheels by the eccentric cam gear device with high accuracy. There was a problem.
【０００７】そこで、本出願人は、上記問題を解消する
ため、金属製に代わって樹脂製の外側摺動部材を採用す
るようにした偏心カムギア装置を提案した（特願平１１
−８６５０４号）。この偏心カムギア装置は、ギア回転
体の軸状保持部にその外周面に開口し外部と収納室とを
連通する樹脂注入通路が設けられており、ギア回転体の
収納室内にその壁面と距離を隔てた状態で内側摺動部を
配置するとともに収納室の壁面に保持部材を取付け、少
なくとも内側摺動部と保持部材とによって区画形成され
る成形用空間部に樹脂材料を前記樹脂注入通路より注入
して成形することにより外側摺動部材が形成される。In order to solve the above-mentioned problem, the present applicant has proposed an eccentric cam gear device in which a resin outer sliding member is used instead of a metal one (Japanese Patent Application No. Hei 11 (1999)).
-86504). In this eccentric cam gear device, a resin injection passage which is opened on the outer peripheral surface of the shaft-shaped holding portion of the gear rotating body and communicates with the outside and the storage chamber is provided. The inner sliding portion is disposed in a separated state, and a holding member is attached to the wall surface of the storage chamber. A resin material is injected from the resin injection passage into at least a molding space defined by the inner sliding portion and the holding member. The outer sliding member is formed by molding.
【０００８】ところが、このように樹脂成形して外側摺
動部材を形成する場合には、樹脂材料を注入する樹脂注
入通路の開口が軸状保持部の外周面に設けられているこ
とから、軸状保持部の曲面状となった外周面に対して樹
脂注入ノズルを当接させなければならないため、その当
接部に隙間が形成されてしまい、樹脂材料の漏れが生じ
易い。そのため、樹脂注入作業を容易に行うことができ
ないという問題が発生する。However, when the outer sliding member is formed by resin molding as described above, the opening of the resin injection passage for injecting the resin material is provided on the outer peripheral surface of the shaft-shaped holding portion. Since the resin injection nozzle must be brought into contact with the curved outer peripheral surface of the shape holding portion, a gap is formed in the contact portion, and leakage of the resin material is likely to occur. Therefore, there arises a problem that the resin injection operation cannot be easily performed.
【０００９】また、漏れや液垂れ等により樹脂注入通路
の開口から流出した樹脂材料が残留してそのまま固化し
てしまうと、その固化した樹脂の突出部は、軸状保持部
の外周面から突出した状態になるため、軸状保持部を取
付部に嵌合保持させる際に障害となり、軸状保持部の取
付作業が困難になる。そのため、その固化樹脂の突出部
を除去する作業が必要になり、作業の煩雑化を招くとい
う問題が発生する。If the resin material that has flowed out of the opening of the resin injection passage due to leakage or dripping remains and solidifies as it is, the projecting portion of the solidified resin projects from the outer peripheral surface of the shaft-shaped holding portion. In this state, it becomes an obstacle when the shaft-shaped holding portion is fitted and held in the mounting portion, and the mounting work of the shaft-shaped holding portion becomes difficult. Therefore, an operation of removing the protruding portion of the solidified resin is required, which causes a problem of complicating the operation.
【００１０】本発明は上記実状に鑑み案出されたもので
あり、摺動面の局部的な摩耗の発生を回避して耐久性の
向上を図り得るようにするとともに、樹脂製の外側摺動
部材を形成するに際してその作業の容易化を図り煩雑化
を回避し得るようにした偏心カムギア装置を提供するこ
とを解決すべき課題とするものである。The present invention has been devised in view of the above-mentioned circumstances, and it is intended to avoid the occurrence of local wear on the sliding surface to improve the durability and to make the outer sliding member made of resin. An object of the present invention is to provide an eccentric cam gear device capable of facilitating the operation of forming members and avoiding complication.
【００１１】[0011]
【課題を解決するための手段】上記課題を解決する請求
項１記載の発明に係る偏心カムギア装置は、軸方向の一
端側に設けられその外周面が取付部に嵌合保持される軸
状保持部と、該軸状保持部の内部に該軸状保持部と偏心
して形成された収納室と、前記軸状保持部の前記外周面
に開口し外部と前記収納室とを連通する樹脂通路と、軸
方向の他端側に設けられ駆動ギアに噛合されるギア部と
を有するギア回転体と、前記収納室内に壁面と距離を隔
てて収納配置され球面よりなる外周面を有する内側摺動
部部と該内側摺動部に連結された偏心軸部とを有する偏
心連結部材と、前記内側摺動部の前記外周面と前記収納
室の壁面との間の空間部に前記樹脂通路より注入した樹
脂材料を成形することにより形成され、前記内側摺動部
を摺動可能に保持する球面よりなる内周面を有する樹脂
製の外側摺動部材と、を備え、前記軸状保持部の外周面
には、前記樹脂通路の開口を含んで形成される平面を有
する面取り部が設けられているという手段を採用してい
る。According to a first aspect of the present invention, there is provided an eccentric cam gear device according to the first aspect of the present invention, wherein the eccentric cam gear device is provided at one end in the axial direction and the outer peripheral surface thereof is fitted and held in a mounting portion. Part, a storage chamber formed eccentrically with the shaft-shaped holding part inside the shaft-shaped holding part, and a resin passage opening to the outer peripheral surface of the shaft-shaped holding part and communicating the outside with the storage chamber. A gear rotating body having a gear portion provided on the other end side in the axial direction and meshing with the drive gear; and an inner sliding portion having an outer peripheral surface formed of a spherical surface and arranged in the housing chamber at a distance from a wall surface. An eccentric connecting member having a portion and an eccentric shaft portion connected to the inner sliding portion, and a space portion between the outer peripheral surface of the inner sliding portion and a wall surface of the storage chamber is injected from the resin passage. It is formed by molding a resin material and slidably holds the inner sliding portion. An outer sliding member made of a resin having an inner peripheral surface formed of a spherical surface, and a chamfered portion having a flat surface including an opening of the resin passage is provided on an outer peripheral surface of the shaft-shaped holding portion. Is adopted.
【００１２】本発明の偏心カムギア装置においては、外
側摺動部材が、ギア回転体の収納室内に配置された内側
摺動部の外周面と収納室の壁面との間に形成される成形
用空間部に、樹脂材料を樹脂通路より注入して成形する
ことにより形成され、これと同時に収納室に配置され
る。そのため、外側摺動部材は、その内周面で摺動可能
に保持する内側摺動部に対して、均一でそれほど大きく
ない圧力が加わる状態に形成される。これにより、外側
摺動部材と内側摺動部の摺動トルクが上昇することなく
低レベルで安定する。In the eccentric cam gear device of the present invention, the outer sliding member is formed between the outer peripheral surface of the inner sliding portion disposed in the storage room of the gear rotating body and the wall surface of the storage room. The part is formed by injecting and molding a resin material from a resin passage, and at the same time, is disposed in a storage chamber. Therefore, the outer sliding member is formed in a state where a uniform and not so large pressure is applied to the inner sliding portion which slidably holds the inner sliding surface. Thereby, the sliding torque between the outer sliding member and the inner sliding portion is stabilized at a low level without increasing.
【００１３】そして、この外側摺動部材は、金属製のも
のに比べて、柔軟で適度な弾性をもち摩擦係数のより小
さい樹脂により形成されている。そのため、ギア回転体
の回転に伴って外側摺動部材と内側摺動部とが摺動する
ときに、偏心軸部の突出先端部が連結固定される連結部
材と外側摺動部材との間に、両者が遠ざかる方向や両者
が近づく方向に反力が作用しても、その反力が外側摺動
部材の弾性変形により吸収される。また、外側摺動部材
の摺動面は摩擦抵抗が小さいため、外側摺動部材と内側
摺動部との摺動面に加わる荷重が滑りによって効果的に
低減される。これにより、摺動面の局部的な摩耗の発生
を回避し、耐久性の向上を図ることができる。The outer sliding member is made of a resin that is flexible and has a suitable elasticity and a smaller coefficient of friction than those made of metal. Therefore, when the outer sliding member and the inner sliding portion slide with the rotation of the gear rotating body, the protruding tip of the eccentric shaft portion is connected and fixed between the connecting member and the outer sliding member. Even if a reaction force acts in a direction in which both members move away from each other or in a direction in which both members approach each other, the reaction force is absorbed by elastic deformation of the outer sliding member. Further, since the sliding surface of the outer sliding member has a small frictional resistance, the load applied to the sliding surface between the outer sliding member and the inner sliding portion is effectively reduced by the sliding. As a result, it is possible to avoid the occurrence of local wear on the sliding surface and improve the durability.
【００１４】そして、その外側摺動部材を樹脂成形して
形成する際には、軸状保持部の外周面に、樹脂材料を注
入する樹脂通路の開口を含んで形成される平面を有する
面取り部が設けられていることから、その平面に対して
隙間が形成されないように樹脂注入ノズルを当接させる
ことができる。これにより、樹脂材料を漏れが生じるこ
となく確実に樹脂通路に注入することが可能となり、樹
脂注入作業が容易になる。When the outer sliding member is formed by resin molding, a chamfered portion having a flat surface including an opening of a resin passage for injecting a resin material is provided on the outer peripheral surface of the shaft-shaped holding portion. Is provided, the resin injection nozzle can be brought into contact with the plane so that no gap is formed. This makes it possible to inject the resin material into the resin passage without leakage, thereby facilitating the resin injection operation.
【００１５】また、液垂れ等により樹脂通路の開口から
突出した状態で少量の樹脂材料が残留してそのまま固化
した場合でも、その固化した樹脂の突出部は、面取り部
内に残留する状態となり、軸状保持部の外周面よりも外
側に突出する可能性が少ない。そのため、その突出部
は、軸状保持部を取付部に嵌合保持させる際に障害とな
らないので、除去する必要がなくなる。Further, even when a small amount of resin material remains and solidifies as it protrudes from the opening of the resin passage due to dripping or the like, the protruding portion of the solidified resin remains in the chamfered portion, and The possibility of projecting outside the outer peripheral surface of the shape holding portion is small. Therefore, the projecting portion does not become an obstacle when the shaft-shaped holding portion is fitted and held in the mounting portion, so that it is not necessary to remove the projecting portion.
【００１６】したがって、本発明の偏心カムギア装置に
よれば、摺動面の局部的な摩耗の発生を回避して耐久性
の向上を図ることができるとともに、樹脂製の外側摺動
部材を形成するに際してその作業の容易化を図り煩雑化
を回避することができる。Therefore, according to the eccentric cam gear device of the present invention, it is possible to improve the durability by avoiding the occurrence of local wear on the sliding surface, and to form the outer sliding member made of resin. In this case, the work can be facilitated and the complication can be avoided.
【００１７】本発明において、ギア回転体の軸状保持部
に設けられる樹脂通路は、軸状保持部の外周面に開口
し、外部と収納室とを連通するように形成されている。
この樹脂通路は、軸状保持部と収納室の偏心方向に沿っ
て延びるように設けることが好ましい。このようにすれ
ば、樹脂通路が収納室の中心に向かって延びるように形
成されることから、樹脂通路より注入される樹脂材料が
内側摺動部の周方向両側へ廻り込み、成形用空間部の隅
々にまで樹脂材料を行き渡らせることができる。In the present invention, the resin passage provided in the shaft-shaped holding portion of the gear rotating body is formed on the outer peripheral surface of the shaft-shaped holding portion so as to communicate the outside with the storage chamber.
This resin passage is preferably provided so as to extend along the eccentric direction of the shaft-shaped holding portion and the storage chamber. With this configuration, since the resin passage is formed so as to extend toward the center of the storage chamber, the resin material injected from the resin passage goes around both sides in the circumferential direction of the inner sliding portion, and the molding space portion The resin material can be spread all over the corners.
【００１８】また、この樹脂通路は、収納室へ樹脂を導
入する樹脂注入通路と、収納室内の余分な樹脂材料や空
気を外部へ流出させる樹脂流出通路とで構成することが
できる。このようにすれば、収納室の成形用空間部内
に、空気が残留することなく樹脂材料を充満させること
ができ、良好な樹脂成形品を得ることができる。Further, the resin passage can be constituted by a resin injection passage for introducing resin into the storage chamber and a resin outflow passage for discharging extra resin material and air in the storage chamber to the outside. With this configuration, the resin material can be filled in the molding space of the storage chamber without air remaining, and a good resin molded product can be obtained.
【００１９】そして、本発明においては、軸状保持部の
外周面の樹脂通路が開口する部分に面取り部が設けられ
ている。この面取り部は、樹脂通路の開口を含んで形成
される平面を有するものである。これにより、その平面
に対して、樹脂通路の開口より樹脂を注入する樹脂注入
ノズルの先端を当接させることができるので、隙間が形
成され難くなり、樹脂材料の漏れも生じ難くなる。よっ
て、樹脂通路に樹脂材料を容易にかつ確実に注入するこ
とが可能となり、樹脂注入作業が容易になる。この面取
り部の平面は、樹脂通路と略直角に交わるように形成さ
れているのが好ましい。このようにすれば、樹脂通路の
延びる方向と樹脂注入ノズルから流出される樹脂材料の
流出方向が略一致するので、樹脂材料の注入作業を円滑
にかつ確実に行うことが可能になる。In the present invention, a chamfered portion is provided at a portion of the outer peripheral surface of the shaft-shaped holding portion where the resin passage is opened. The chamfer has a flat surface including the opening of the resin passage. Accordingly, the tip of the resin injection nozzle for injecting the resin from the opening of the resin passage can be brought into contact with the plane, so that a gap is less likely to be formed and leakage of the resin material is less likely to occur. Therefore, the resin material can be easily and reliably injected into the resin passage, and the resin injection operation becomes easy. It is preferable that the flat surface of the chamfer is formed so as to intersect the resin passage at a substantially right angle. With this configuration, the direction in which the resin passage extends and the direction in which the resin material flows out of the resin injection nozzle substantially coincide with each other, so that the operation of injecting the resin material can be performed smoothly and reliably.
【００２０】そして、本発明における収納室は、外側収
納部材や内側摺動部などが収納配置されるところであっ
て、軸状保持部の内部に軸状保持部と偏心して形成され
る。この収納室は、軸状保持部の少なくとも一端側に開
口する円孔などによって形成される。この収納室の壁面
には、外側摺動部材の軸端を保持する保持部材を取付け
ることができる。この保持部材は、外側摺動部材を樹脂
成形により形成する際に収納室の壁面に取付けることに
より、成形用空間部の区画形成面の一部として利用でき
る。このような保持部としては、例えば、収納室の側壁
面に取付けられ外側摺動部材の一端面を保持するように
したＣリングや、収納室に圧入などにより装着され外側
摺動部材の両端面及び外側面を保持するようにした断面
コ字形状のリング部材などを採用することができる。The storage chamber in the present invention is where the outer storage member and the inner sliding portion are stored and arranged, and is formed eccentrically inside the shaft-shaped holding portion with the shaft-shaped holding portion. The storage chamber is formed by a circular hole or the like that opens on at least one end of the shaft-shaped holding portion. A holding member for holding the shaft end of the outer sliding member can be attached to the wall surface of the storage chamber. This holding member can be used as a part of the partition forming surface of the molding space by attaching it to the wall surface of the storage chamber when forming the outer sliding member by resin molding. As such a holding portion, for example, a C-ring attached to the side wall surface of the storage chamber and holding one end surface of the outer sliding member, or both end surfaces of the outer sliding member mounted to the storage chamber by press fitting or the like. In addition, a ring member having a U-shaped cross section that holds the outer surface may be employed.
【００２１】そして、本発明における外側摺動部材は、
この外側摺動部材が配置されるべく収納室に形成される
成形用空間部で樹脂成形することにより形成される。こ
の成型用空間部は、収納室内に収納配置された内側摺動
部の外周面と収納室の壁面との間に成形される。The outer sliding member according to the present invention comprises:
The outer sliding member is formed by resin molding in a molding space formed in the storage chamber to be arranged. The molding space is formed between the outer peripheral surface of the inner sliding portion housed and arranged in the housing room and the wall surface of the housing room.
【００２２】外側摺動部材を形成する樹脂材料の材質と
しては、例えば、ナイロンやアセタール、フェノールな
どの種々の熱可塑性樹脂或いは熱硬化性樹脂を採用する
ことができる。これらの樹脂材料には、例えば、ガラス
繊維やカーボン繊維、芳香族ポリアミド（ケブラー）繊
維などの強化繊維を適宜混入することができる。また、
内側摺動部と摺動する外側摺動部材の摺動面には、例え
ばポリテトラフルオロエチレン（ＰＴＦＥ）繊維やポリ
エチレン（ＰＥＴ）繊維などの摩擦係数の小さい繊維に
より形成される摺動布を配置することができる。これに
より、内側摺動部と外側摺動部材の摺動抵抗をより一層
低減することが可能となる。As the material of the resin material forming the outer sliding member, for example, various thermoplastic resins or thermosetting resins such as nylon, acetal, and phenol can be used. In these resin materials, for example, reinforcing fibers such as glass fiber, carbon fiber, and aromatic polyamide (Kevlar) fiber can be appropriately mixed. Also,
On the sliding surface of the outer sliding member that slides on the inner sliding portion, a sliding cloth formed of a fiber having a small coefficient of friction such as polytetrafluoroethylene (PTFE) fiber or polyethylene (PET) fiber is disposed. can do. This makes it possible to further reduce the sliding resistance between the inner sliding portion and the outer sliding member.
【００２３】なお、本発明における偏心連結部材は、内
側摺動部と偏心軸部とを有するものであって、両者を一
体に形成したものや、別体で形成した両者を一体的に結
合したものなどいずれのものを採用してもよい。The eccentric connecting member according to the present invention has an inner sliding portion and an eccentric shaft portion. The eccentric connecting member is formed integrally with the eccentric connecting member or is formed integrally with the eccentric connecting member. Any one of them may be used.
【００２４】[0024]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づき説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２５】図１は本実施形態に係る偏心カムギア装置
の軸方向に沿う断面図であり、図２はその偏心カムギア
装置の平面図である。FIG. 1 is a sectional view of the eccentric cam gear device according to this embodiment along the axial direction, and FIG. 2 is a plan view of the eccentric cam gear device.
【００２６】本実施形態の偏心カムギア装置は、図１及
び図２に示すように、面取り部１９、１９が設けられた
軸状保持部１１と収納室１５と樹脂注入通路１７及び樹
脂流出通路１８とギア部１４とを有するギア回転体１
と、収納室１５内に壁面と距離を隔てて収納配置された
内側摺動部２１と該内側摺動部２１に連結された偏心軸
部２５とを有する偏心連結部材２と、内側摺動部２の外
周面と収納室１５の壁面との間の空間部に樹脂材料を注
入して成形することにより形成された外側摺動部材３
と、収納室１５の壁面に取付けられたリング状の保持部
材４と、を主要素として構成されている。As shown in FIGS. 1 and 2, the eccentric cam gear device of this embodiment has a shaft-shaped holding portion 11 provided with chamfered portions 19, 19, a storage chamber 15, a resin injection passage 17, and a resin outflow passage 18. Rotating body 1 having a gear portion 14
An eccentric connecting member 2 having an inner sliding portion 21 housed and arranged at a distance from a wall surface in the housing chamber 15 and an eccentric shaft portion 25 connected to the inner sliding portion 21; An outer sliding member 3 formed by injecting and molding a resin material into a space between the outer peripheral surface of the housing 2 and the wall surface of the storage chamber 15.
And a ring-shaped holding member 4 attached to the wall surface of the storage room 15 as main elements.
【００２７】ギア回転体１は、金属により段付き円筒状
に形成されたものであり、一端側に設けられた軸状保持
部１１と、他端側に設けられた大径部１２と、軸状保持
部１１と大径部１２との間に設けられ軸状保持部１１よ
りも大径で大径部１２よりも小径の中間部１３と、大径
部１２の端面の外周部に設けられ周方向に沿って配列さ
れた多数の歯により構成されるギア部１４とからなる。
大径部１２及び中間部１３の内部には、大径部１２の端
面に開口し、ギア回転体１の回転軸と同軸状に形成され
た円柱形状の内孔１２ａが設けられている。The gear rotating body 1 is formed in a stepped cylindrical shape from metal, and has a shaft-shaped holding portion 11 provided at one end, a large-diameter portion 12 provided at the other end, and a shaft. An intermediate portion 13 which is provided between the shape holding portion 11 and the large diameter portion 12 and has a larger diameter than the shaft-shaped holding portion 11 and a smaller diameter than the large diameter portion 12, and is provided on an outer peripheral portion of an end face of the large diameter portion 12. And a gear portion 14 composed of a large number of teeth arranged along the circumferential direction.
Inside the large diameter portion 12 and the intermediate portion 13, there is provided a cylindrical inner hole 12 a which is opened at the end face of the large diameter portion 12 and is formed coaxially with the rotation axis of the gear rotating body 1.
【００２８】また、軸状保持部１１の内部には、その端
面に開口し軸状保持部１１と偏心して形成された円孔よ
りなる収納室１５が設けられている。この収納室１５の
底部は、収納室１５よりも小径の連通孔１６によって内
孔１２ａと連通している。収納室１５の側壁面の開口端
近傍部には、周方向に一周する凹溝１５ａが設けられて
いる。この軸状保持部１１には、外周面に開口を有し外
部と収納室１５とを連通する樹脂注入通路１７及び樹脂
流出通路１８が軸状保持部１１と収納室１５の偏心方向
に沿って延設されている。即ち、樹脂注入通路１７及び
樹脂流出通路１８の開口は、軸状保持部１１と収納室１
５の偏心方向の両側で、軸状保持部１１の外周面の軸対
称となる位置に形成されている。Further, inside the shaft-like holding portion 11, there is provided a storage chamber 15 having a circular hole opened at the end face and formed eccentrically with the shaft-like holding portion 11. The bottom of the storage chamber 15 communicates with the inner hole 12 a through a communication hole 16 having a smaller diameter than the storage chamber 15. In the vicinity of the opening end of the side wall surface of the storage chamber 15, a concave groove 15 a that makes a round in the circumferential direction is provided. The shaft-shaped holding portion 11 has an opening on the outer peripheral surface and has a resin injection passage 17 and a resin outflow passage 18 communicating the outside and the storage chamber 15 along the eccentric direction of the shaft-shaped holding portion 11 and the storage room 15. It has been extended. That is, the openings of the resin injection passage 17 and the resin outflow passage 18 are formed between the shaft-shaped holding portion 11 and the storage chamber 1.
5 are formed at axially symmetric positions on the outer peripheral surface of the shaft-shaped holding portion 11 on both sides in the eccentric direction.
【００２９】そして、軸状保持部１１の外周面の樹脂注
入通路１７及び樹脂流出通路１８が開口する部分には、
樹脂注入通路１７及び樹脂流出通路１８の開口を含んで
形成される平面を有する面取り部１９、１９が設けられ
ている。この面取り部１９、１９の各平面は、樹脂注入
通路１７及び樹脂流出通路１８と略直角に交わるように
形成されていることから、両平面は略平行となってい
る。In the portion of the outer peripheral surface of the shaft-shaped holding portion 11 where the resin injection passage 17 and the resin outflow passage 18 are opened,
Chamfers 19, 19 having a flat surface formed including the openings of the resin injection passage 17 and the resin outflow passage 18 are provided. Since the planes of the chamfers 19 and 19 are formed so as to intersect the resin injection passage 17 and the resin outflow passage 18 at a substantially right angle, the planes are substantially parallel to each other.
【００３０】偏心連結部材２は、収納室１５の内周壁面
と距離を隔てた状態で収納室１５内に収納配置された金
属製の内側摺動部２１と、内側摺動部２１に一端が連結
されて一体的に設けられた金属製の偏心軸部２５とから
なる。内側摺動部２１は、軸方向に貫通する内孔を有す
る短い円筒形状に形成され、その外周面が凸状球面で形
成されている。この内側摺動部２１は、ギア回転体１の
回転軸Ｐと偏心する位置に配置されている。偏心軸部２
５は、その一端部が内側摺動部２１の内孔に嵌合固定さ
れ、その他端部が収納室１５の開口から突出している。The eccentric connecting member 2 has a metal inner sliding portion 21 housed and disposed in the storage room 15 at a distance from the inner peripheral wall surface of the storage room 15, and one end of the inner sliding portion 21. And an eccentric shaft portion 25 made of metal which is connected and integrally provided. The inner sliding portion 21 is formed in a short cylindrical shape having an inner hole penetrating in the axial direction, and has an outer peripheral surface formed of a convex spherical surface. The inner sliding portion 21 is disposed at a position eccentric to the rotation axis P of the gear rotating body 1. Eccentric shaft part 2
5 has one end fitted and fixed in the inner hole of the inner sliding portion 21 and the other end protruding from the opening of the storage chamber 15.
【００３１】外側摺動部材３は、樹脂（ガラス繊維を３
０重量％混入した６−６ナイロン）により略円筒状に形
成され、内側摺動部２の外周面と球面接触する凹状球面
からなる内周面を有する。外側摺動部材３の内周表面に
は、ポリテトラフルオロエチレン（ＰＴＦＥ）繊維やポ
リエチレン（ＰＥＴ）繊維よりなる摺動ライナ３１が配
置されている。この外側摺動部材３は、摺動ライナ３１
の内表面で内側摺動部２を摺動可能に保持する状態で、
ギア回転体１の収納室１５内に収納配置されている。The outer sliding member 3 is made of resin (glass fiber 3
(6-6 nylon mixed with 0% by weight), and has an inner peripheral surface formed of a concave spherical surface which makes spherical contact with the outer peripheral surface of the inner sliding portion 2. A sliding liner 31 made of polytetrafluoroethylene (PTFE) fiber or polyethylene (PET) fiber is arranged on the inner peripheral surface of the outer sliding member 3. The outer sliding member 3 includes a sliding liner 31.
With the inner sliding portion 2 slidably held on the inner surface of
The gear rotator 1 is housed in the housing chamber 15.
【００３２】外側摺動部材３の外周面は収納室１５の側
壁面に当接し、その一端面は収納室１５の底壁面に当接
している。この外側摺動部材３は、後に詳述するよう
に、内側摺動部２１の外周面と収納室１５の側壁面との
間の空間部に樹脂注入通路１７より樹脂材料を注入して
成形することにより形成されたものであり、その樹脂成
形を行うのと同時に収納室１５内に配置されている。The outer peripheral surface of the outer sliding member 3 is in contact with the side wall surface of the storage room 15, and one end surface thereof is in contact with the bottom wall surface of the storage room 15. As will be described in detail later, the outer sliding member 3 is formed by injecting a resin material from the resin injection passage 17 into a space between the outer peripheral surface of the inner sliding portion 21 and the side wall surface of the storage chamber 15. It is arranged in the storage chamber 15 at the same time as the resin molding is performed.
【００３３】保持部材４は、金属板でリング状に形成さ
れ、周上の一箇所に径の拡縮変形を可能にするスリット
が設けられたＣリングで構成されている。この保持部材
４は、収納室１５の側壁面に設けられた凹溝１５ａにそ
の外周端部を嵌合することにより取付けられており、そ
の内周端が内側摺動部２の外周面の近傍位置に突出して
いる。この保持部材４は、外側摺動部材３の樹脂成形を
行う際に取付けられており、外側摺動部材３の成形用空
間部の区画形成面の一部として利用される。そして、外
側摺動部材３の形成後には、外側摺動部材３の一方の端
面に当接し、外側摺動部材３の収納室１５内からの抜け
出しを阻止している。The holding member 4 is formed of a metal plate in the shape of a ring, and is formed of a C-ring provided with a slit at one location on the circumference to enable expansion and contraction of the diameter. The holding member 4 is attached by fitting an outer peripheral end thereof into a concave groove 15 a provided on a side wall surface of the storage chamber 15, and an inner peripheral end thereof is located near an outer peripheral surface of the inner sliding portion 2. Projecting into position. The holding member 4 is attached when performing resin molding of the outer sliding member 3 and is used as a part of a partition forming surface of a molding space of the outer sliding member 3. After the outer sliding member 3 is formed, the outer sliding member 3 contacts one end surface of the outer sliding member 3 to prevent the outer sliding member 3 from coming out of the storage chamber 15.
【００３４】以上のように構成された偏心カムギア装置
の外側摺動部材３は、次のようにして形成されている。
先ず、偏心連結部材２の内側摺動部２１の外周面に略円
筒状に形成された摺動ライナ３１を装着し、その内側摺
動部２１をギア回転体１の収納室１５の側壁面と所定距
離を隔てた状態で収納室１５内に収納配置する。なお、
摺動ライナ３１の外周表面には接着剤が塗布されてい
る。次に、収納室１５の側壁面に設けられた凹溝１５ａ
に保持部材４を取付ける。これにより、収納室１５の側
壁面及び底壁面と保持部材４と内側摺動部２１の外周面
の摺動ライナ３１とによって成形用空間部が形成され
る。The outer sliding member 3 of the eccentric cam gear device configured as described above is formed as follows.
First, a sliding liner 31 formed in a substantially cylindrical shape is mounted on the outer peripheral surface of the inner sliding portion 21 of the eccentric connecting member 2, and the inner sliding portion 21 is attached to the side wall surface of the storage chamber 15 of the gear rotating body 1. It is stored and stored in the storage room 15 at a predetermined distance. In addition,
An adhesive is applied to the outer peripheral surface of the sliding liner 31. Next, a concave groove 15a provided on the side wall surface of the storage chamber 15
Is attached to the holding member 4. Thus, a molding space is formed by the side wall surface and the bottom wall surface of the storage chamber 15, the holding member 4, and the sliding liner 31 on the outer peripheral surface of the inner sliding portion 21.
【００３５】そして、外側摺動部材３を形成する樹脂材
料を、ギア回転体１の軸状保持部１１に設けられた樹脂
注入通路１７より注入して、その成形用空間部に充填す
る。このとき、樹脂材料注入ノズルは、樹脂注入通路１
７の開口を含んで平面状に形成された面取り部１９に当
接されるため、その先端部は隙間が形成されることなく
確実に密着し、樹脂材料が外部に漏れることなく確実に
注入される。また、成形用空間部内に充填された樹脂材
料は、成形用空間部内の空気を樹脂流出通路１８より押
し出し、さらに余分な樹脂材料が樹脂流出通路１８に流
出するので、成形用空間部内には空気が残留することな
く樹脂材料が充満される。なお、樹脂注入通路１７及び
樹脂流出通路１８の開口から液垂れ等により少量の樹脂
材料が突出した状態で残留していても、その樹脂材料を
敢えて除去する必要はない。Then, a resin material forming the outer sliding member 3 is injected from a resin injection passage 17 provided in the shaft-shaped holding portion 11 of the gear rotating body 1, and is filled in the molding space. At this time, the resin material injection nozzle is connected to the resin injection passage 1.
7 is in contact with the chamfered portion 19 formed in a flat shape including the opening 7, so that the front end portion is securely adhered without forming a gap, and the resin material is reliably injected without leaking to the outside. You. Further, the resin material filled in the molding space pushes out the air in the molding space from the resin outflow passage 18, and further excess resin material flows out into the resin outflow passage 18. Is filled with the resin material without remaining. Even if a small amount of the resin material remains in a protruding state due to liquid dripping from the openings of the resin injection passage 17 and the resin outflow passage 18, it is not necessary to remove the resin material.
【００３６】そして、所定時間経過後、その成形用空間
部には、樹脂材料が固化して成型用空間部と対応する形
状の樹脂成形体が形成され、その樹脂成形体とその内周
面に接着剤により接着された摺動ライナ３１とからなる
外側摺動部材３が形成される。この外側摺動部材３は、
内側摺動部２の外周面と球面接触する内周面で内側摺動
部２を摺動可能に保持する状態に形成されており、樹脂
成形を行うのと同時に収納室１５内に配置される。After a predetermined time has elapsed, the resin material is solidified in the molding space to form a resin molded body having a shape corresponding to the molding space, and the resin molded body and the inner peripheral surface thereof are formed. The outer sliding member 3 including the sliding liner 31 bonded by the adhesive is formed. This outer sliding member 3
The inner sliding portion 2 is formed so as to be slidably held by an inner peripheral surface that is in spherical contact with the outer peripheral surface of the inner sliding portion 2, and is disposed in the storage chamber 15 at the same time as performing resin molding. .
【００３７】なお、この外側摺動部材３は、保持部材４
により収納室１５からの抜け出しを阻止され、かつ樹脂
注入通路１７及び樹脂流出通路１８内に残留して固化し
た樹脂材料と一体に連結した状態に形成されているた
め、ギア回転体１の軸状保持部１１に確実に固定された
状態となる。また、樹脂注入通路１７より注入される樹
脂材料が注入圧力により成形用空間部の隅々まで確実に
充填されることから、収納室１５の壁面や保持部材４、
内側摺動部２１との間に隙間が形成されないため、ガタ
つきが発生することはない。また、樹脂注入通路１７及
び樹脂流出通路１８の開口から突出した状態で固化した
少量の樹脂材料が残留していた場合でも、それらの開口
を含むようにして面取り部１９、１９が設けられている
ことから、その樹脂材料の突出部が軸状保持部１１の外
周面よりも外側に突出する可能性は極めて少ない。The outer sliding member 3 is provided with a holding member 4
As a result, the gear rotor 1 is formed integrally with the resin material remaining in the resin injection passage 17 and the resin outflow passage 18 and solidified. The state is securely fixed to the holding portion 11. In addition, since the resin material injected from the resin injection passage 17 is surely filled to every corner of the molding space by the injection pressure, the wall surface of the storage chamber 15 and the holding member 4,
Since no gap is formed between the inner sliding portion 21 and the inner sliding portion 21, rattling does not occur. Further, even if a small amount of solidified resin material remains in a state protruding from the openings of the resin injection passage 17 and the resin outflow passage 18, the chamfered portions 19, 19 are provided so as to include those openings. The possibility that the projecting portion of the resin material projects outside the outer peripheral surface of the shaft-like holding portion 11 is extremely small.
【００３８】以上のようにして作製された本実施形態の
偏心カムギア装置は、四輪操舵機構を搭載する車両にお
いて、後輪の操舵角を変更するための一装置として使用
される。この場合、ギア回転体１の軸状保持部１１がギ
アボックスの取付穴に嵌合保持された状態で、車体側に
設けられた支持部材にギア回転体１が回転軸Ｐを中心に
回転可能に取付けられるとともに、後輪側に設けられた
連結部材に偏心軸部３５の突出先端部が連結固定され
る。また、ギア回転体１のギア部１４は、制御部によっ
て駆動制御されるモータに取付けられた駆動ギアに噛合
される。The eccentric cam gear device of the present embodiment manufactured as described above is used as one device for changing the steering angle of the rear wheels in a vehicle equipped with a four-wheel steering mechanism. In this case, the gear rotator 1 can be rotated about the rotation axis P by a support member provided on the vehicle body side in a state where the shaft-shaped holding portion 11 of the gear rotator 1 is fitted and held in the mounting hole of the gear box. And the protruding tip of the eccentric shaft 35 is fixedly connected to a connecting member provided on the rear wheel side. The gear section 14 of the gear rotating body 1 is meshed with a drive gear attached to a motor that is driven and controlled by the control section.
【００３９】そして、前輪の操舵角を検出するセンサや
車速を検出するセンサなどの検出情報に基づき、制御部
によりモータが駆動されると、ギア回転体１が正逆いず
れかの方向に所定角度回転する。これにより、ギア回転
体１の回転軸Ｐと偏心する位置に配置された内側摺動部
２１は、外側摺動部材３の接触面と摺動しつつギア回転
体１の回転方向に追従して移動する。これに伴い、内側
摺動部２１に一端が連結されている偏心軸部２５は、内
側摺動部２１と外側摺動部材３との摺動により角度変位
が吸収され、傾くようにして内側摺動部２１の動きに追
従する。これにより、偏心軸部２５の突出先端部が連結
固定されている連結部材が偏心軸部２５の変位量に応じ
て変位することにより、後輪が所定の方向へ所定の角度
だけ操舵されることとなる。When the motor is driven by the control unit based on detection information such as a sensor for detecting the steering angle of the front wheels and a sensor for detecting the vehicle speed, the gear rotating body 1 is rotated by a predetermined angle in either the forward or reverse direction. Rotate. Accordingly, the inner sliding portion 21 disposed at a position eccentric to the rotation axis P of the gear rotating body 1 follows the rotation direction of the gear rotating body 1 while sliding on the contact surface of the outer sliding member 3. Moving. Accordingly, the eccentric shaft portion 25 having one end connected to the inner sliding portion 21 absorbs an angular displacement by sliding between the inner sliding portion 21 and the outer sliding member 3, and tilts the inner sliding portion. It follows the movement of the moving part 21. Accordingly, the rear wheel is steered by a predetermined angle in a predetermined direction by displacing the connecting member to which the protruding tip end of the eccentric shaft portion 25 is connected and fixed in accordance with the displacement amount of the eccentric shaft portion 25. Becomes
【００４０】以上のように、本実施形態の偏心カムギア
装置によれば、外側摺動部材３は、収納室１５内に配置
された内側摺動部２１と保持部材４と収納室１５の内周
壁面及び底壁面とによって区画形成される成形用空間部
に樹脂注入通路１７より樹脂材料を注入して成形するこ
とにより形成されている。そのため、外側摺動部材３
は、その内周面で摺動可能に保持する内側摺動部２１に
対して、均一でそれほど大きくない圧力が加わる状態に
形成される。これにより、外側摺動部材３と内側摺動部
２１の摺動トルクが上昇することなく低レベルで安定す
る。As described above, according to the eccentric cam gear device of the present embodiment, the outer sliding member 3 includes the inner sliding portion 21, the holding member 4, and the inner periphery of the storage chamber 15 arranged in the storage chamber 15. It is formed by injecting and molding a resin material from a resin injection passage 17 into a molding space defined by the wall surface and the bottom wall surface. Therefore, the outer sliding member 3
Is formed in a state where a uniform and not so large pressure is applied to the inner sliding portion 21 slidably held on the inner peripheral surface thereof. Thereby, the sliding torque between the outer sliding member 3 and the inner sliding portion 21 is stabilized at a low level without increasing.
【００４１】そして、この外側摺動部材３は、金属製の
ものに比べて、柔軟で適度な弾性をもち、摩擦係数が小
さい樹脂により形成されている。そのため、ギア回転体
１の回転に伴って外側摺動部材３と内側摺動部２１とが
摺動するときに、偏心軸部２５の突出先端部が連結固定
される連結部材と外側摺動部材３との間に、両者が遠ざ
かる方向や両者が近づく方向に反力が作用しても、その
反力が外側摺動部材３の弾性変形により吸収される。ま
た、外側摺動部材３の内周面には摩擦係数の小さい摺動
ライナ３１が配置されていることから、外側摺動部材３
と内側摺動部２１との摺動面は摩擦抵抗が極めて小さい
ため、外側摺動部材３と内側摺動部２１との摺動面に加
わる荷重が滑りによって効果的に低減される。The outer sliding member 3 is made of a resin having a softer and more appropriate elasticity and a smaller coefficient of friction than those made of metal. Therefore, when the outer sliding member 3 and the inner sliding portion 21 slide with the rotation of the gear rotating body 1, the connecting member to which the protruding distal end of the eccentric shaft portion 25 is connected and fixed, and the outer sliding member Even if a reaction force acts in a direction in which the two slide away from each other or in a direction in which the two approach each other, the reaction force is absorbed by the elastic deformation of the outer sliding member 3. Further, since the sliding liner 31 having a small coefficient of friction is disposed on the inner peripheral surface of the outer sliding member 3,
Since the sliding surface between the inner sliding portion 21 and the inner sliding portion 21 has extremely small frictional resistance, the load applied to the sliding surface between the outer sliding member 3 and the inner sliding portion 21 is effectively reduced by the slip.
【００４２】したがって、本実施形態の偏心カムギア装
置によれば、外側摺動部材３と内側摺動部２１との摺動
面の局部的な摩耗の発生を回避することができる。これ
により、その偏心カムギア装置による後輪の操舵角制御
を高精度に維持することが可能となり、耐久性の向上を
図ることができる。Therefore, according to the eccentric cam gear device of the present embodiment, it is possible to avoid the local wear of the sliding surface between the outer sliding member 3 and the inner sliding portion 21. As a result, the steering angle control of the rear wheels by the eccentric cam gear device can be maintained with high accuracy, and the durability can be improved.
【００４３】そして、その外側摺動部材３を樹脂成形し
て形成する際には、軸状保持部１１の外周面に、樹脂注
入通路１７の開口を含んで形成される平面を有する面取
り部１９が設けられていることから、その平面に対して
隙間が形成されないように樹脂注入ノズルを当接させる
ことができる。これにより、樹脂材料を漏れが生じるこ
となく確実に樹脂注入通路１７に注入することが可能と
なり、樹脂注入作業が容易になる。When the outer sliding member 3 is formed by resin molding, a chamfered portion 19 having a flat surface including an opening of the resin injection passage 17 is formed on the outer peripheral surface of the shaft-shaped holding portion 11. Is provided, the resin injection nozzle can be brought into contact with the plane so that no gap is formed. Thereby, the resin material can be reliably injected into the resin injection passage 17 without causing leakage, thereby facilitating the resin injection operation.
【００４４】また、液垂れ等により樹脂注入通路１７及
び樹脂流出通路１８の開口から突出した状態で少量の樹
脂材料が残留してそのまま固化した場合でも、その固化
した樹脂の突出部は、面取り部１９、１９内に残留する
状態となり、軸状保持部１１の外周面よりも外側に突出
する可能性が少ない。そのため、その突出部は、軸状保
持部１１を取付部に嵌合保持させる際に障害とならない
ので、除去作業を行う必要がなくなる。Further, even if a small amount of resin material remains and solidifies as it protrudes from the openings of the resin injection passage 17 and the resin outflow passage 18 due to dripping or the like, the protruding portion of the solidified resin is chamfered. 19, 19, it is less likely to protrude outside the outer peripheral surface of the shaft-shaped holding portion 11. Therefore, the projecting portion does not hinder the fitting and holding of the shaft-shaped holding portion 11 with the mounting portion, so that it is not necessary to perform the removing operation.
【００４５】したがって、本実施形態の偏心カムギア装
置によれば、樹脂製の外側摺動部材３を形成するに際し
てその作業の容易化を図り煩雑化を回避することができ
る。Therefore, according to the eccentric cam gear device of the present embodiment, when forming the outer sliding member 3 made of resin, the work can be simplified and the complication can be avoided.
【図１】本発明の実施形態に係る偏心カムギア装置の軸
方向に沿う断面図である。FIG. 1 is a sectional view along an axial direction of an eccentric cam gear device according to an embodiment of the present invention.
【図２】本発明の実施形態に係る偏心カムギア装置の平
面図である。FIG. 2 is a plan view of the eccentric cam gear device according to the embodiment of the present invention.
【図３】従来の偏心カムギア装置の軸方向に沿う断面図
である。FIG. 3 is a sectional view along the axial direction of a conventional eccentric cam gear device.
【図４】従来の偏心カムギア装置の平面図である。FIG. 4 is a plan view of a conventional eccentric cam gear device.
１、５…ギア回転体 ２、６…偏心連結部材 ３、７…外側摺動部材 ４…保持部材 ８…モ
ータ １１、５１…軸状保持部 １２…大径部 １２
ａ…内孔 １３…中間部 １４、５４…ギア部 １５、５
５…収納室 １５ａ…凹溝 １６…連通孔 １７…樹脂注入
通路（樹脂通路） １８…樹脂流出通路（樹脂通路） １９…面取り部 ２１、６１…内側摺動部 ２５、６５…偏心軸部 ３１…摺動ライナ1, 5 gear rotating body 2, 6 eccentric connecting member 3, 7 outer sliding member 4 holding member 8 motor 11, 51 shaft holding portion 12 large diameter portion 12
a ... inner hole 13 ... middle part 14, 54 ... gear part 15, 5
5: storage chamber 15a: concave groove 16: communication hole 17: resin injection passage (resin passage) 18: resin outflow passage (resin passage) 19: chamfered part 21, 61 ... inner sliding part 25, 65 ... eccentric shaft part 31 ... Sliding liner
Claims (5)
取付部に嵌合保持される軸状保持部と、該軸状保持部の
内部に該軸状保持部と偏心して形成された収納室と、前
記軸状保持部の前記外周面に開口し外部と前記収納室と
を連通する樹脂通路と、軸方向の他端側に設けられ駆動
ギアに噛合されるギア部とを有するギア回転体と、 前記収納室内に壁面と距離を隔てて収納配置され球面よ
りなる外周面を有する内側摺動部部と該内側摺動部に連
結された偏心軸部とを有する偏心連結部材と、 前記内側摺動部の前記外周面と前記収納室の壁面との間
の空間部に前記樹脂通路より注入した樹脂材料を成形す
ることにより形成され、前記内側摺動部を摺動可能に保
持する球面よりなる内周面を有する樹脂製の外側摺動部
材と、を備え、 前記軸状保持部の外周面には、前記樹脂通路の開口を含
んで形成される平面を有する面取り部が設けられている
ことを特徴とする偏心カムギア装置。A shaft holding portion provided on one end side in the axial direction, the outer peripheral surface of which is fitted and held in a mounting portion, and formed inside the shaft holding portion so as to be eccentric with the shaft holding portion. A gear having a storage chamber, a resin passage opening on the outer peripheral surface of the shaft-shaped holding portion and communicating the outside with the storage chamber, and a gear portion provided on the other end side in the axial direction and meshed with a drive gear; A rotating body, and an eccentric connecting member having an inner sliding portion having an outer peripheral surface formed of a spherical surface and being disposed at a distance from a wall surface in the storage chamber and an eccentric shaft portion connected to the inner sliding portion, It is formed by molding a resin material injected from the resin passage into a space between the outer peripheral surface of the inner sliding portion and the wall surface of the storage chamber, and slidably holds the inner sliding portion. An outer sliding member made of resin having an inner peripheral surface formed of a spherical surface, and the shaft-shaped holding portion. An eccentric cam gear device characterized in that a chamfered portion having a flat surface formed including an opening of the resin passage is provided on an outer peripheral surface of the eccentric cam gear device.
収納室の偏心方向に沿って延設されていることを特徴と
する請求項１記載の偏心カムギア装置。2. The eccentric cam gear device according to claim 1, wherein the resin passage extends along an eccentric direction of the shaft-shaped holding portion and the storage chamber.
入する樹脂注入通路と前記収納室から外部へ樹脂を流出
させる樹脂流出通路とからなることを特徴とする請求項
１又は２記載の偏心カムギア装置。3. The resin passage according to claim 1, wherein the resin passage includes a resin injection passage for introducing the resin into the storage chamber and a resin outflow passage for discharging the resin from the storage chamber to the outside. Eccentric cam gear device.
路と略直角に交わるように形成されていることを特徴と
する請求項１〜３記載の偏心カムギア装置。4. The eccentric cam gear device according to claim 1, wherein the flat surface of the chamfered portion is formed so as to intersect the resin passage at a substantially right angle.
材の軸端を保持する保持部材が取付けられていることを
特徴とする請求項１記載の偏心カムギア装置。5. The eccentric cam gear device according to claim 1, wherein a holding member for holding a shaft end of the outer sliding member is attached to a wall surface of the storage chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35289799A JP2001165142A (en) | 1999-12-13 | 1999-12-13 | Eccentric cam gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35289799A JP2001165142A (en) | 1999-12-13 | 1999-12-13 | Eccentric cam gear device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001165142A true JP2001165142A (en) | 2001-06-19 |
Family
ID=18427209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35289799A Pending JP2001165142A (en) | 1999-12-13 | 1999-12-13 | Eccentric cam gear device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001165142A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010042074B3 (en) * | 2010-10-06 | 2012-02-09 | Aktiebolaget Skf | Bearing housing and bearing arrangement |
| JP2012082843A (en) * | 2010-10-06 | 2012-04-26 | Ntn Corp | Spherical slide bearing device |
| CN105443574A (en) * | 2014-09-29 | 2016-03-30 | 福建龙溪轴承(集团)股份有限公司 | Radial spherical plain bearing structure and use method thereof |
-
1999
- 1999-12-13 JP JP35289799A patent/JP2001165142A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010042074B3 (en) * | 2010-10-06 | 2012-02-09 | Aktiebolaget Skf | Bearing housing and bearing arrangement |
| EP2439419A1 (en) | 2010-10-06 | 2012-04-11 | Aktiebolaget SKF | Bearing housing and bearing assembly |
| JP2012082843A (en) * | 2010-10-06 | 2012-04-26 | Ntn Corp | Spherical slide bearing device |
| CN105443574A (en) * | 2014-09-29 | 2016-03-30 | 福建龙溪轴承(集团)股份有限公司 | Radial spherical plain bearing structure and use method thereof |
| CN105443574B (en) * | 2014-09-29 | 2019-05-31 | 福建龙溪轴承(集团)股份有限公司 | Plain radial bearing structure and its application method |
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