JP3590915B2 - Lubrication structure for manual transmission - Google Patents

Lubrication structure for manual transmission Download PDF

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Publication number
JP3590915B2
JP3590915B2 JP14545795A JP14545795A JP3590915B2 JP 3590915 B2 JP3590915 B2 JP 3590915B2 JP 14545795 A JP14545795 A JP 14545795A JP 14545795 A JP14545795 A JP 14545795A JP 3590915 B2 JP3590915 B2 JP 3590915B2
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Japan
Prior art keywords
gear
fitted
manual transmission
diameter
shaft
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Expired - Fee Related
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JPH08312762A (en
Inventor
忠雄 河野
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Aichi Machine Industry Co Ltd
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Aichi Machine Industry Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
    • F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation

Description

【０００１】
【産業上の利用分野】
この発明は、手動変速機に係り、詳しくは変速機のヘリカルスピードギヤの潤滑構造に関する。
【０００２】
【従来の技術】
従来、この種の手動変速機１においては、図５に示すようにシャフト２のスプライン部３にはシンクロナイザーハブ４が嵌合され、このシンクロナイザーハブ４の外周に形成されたスプライン部５にはカップリングスリーブ６がスライド可能に外嵌されている。また、このシャフト２にヘリカルスピードギヤ９が回転可能に外嵌され、さらに、このヘリカルスピードギヤ９のボス部９ａにはクラッチギヤ１０が固定状に外嵌されている。また、このクラッチギヤ１０のコーン部１０ａにはシンクロナイザーリング１１が外嵌されてカップリングスリーブ６と係脱可能に設けられている。
【０００３】
【発明が解決しようとする課題】
しかしながら、このシャフト２は変速機１のケースの上部側に回転可能に支承されていることから、例えばヘリカルスピードギヤ９の周辺は変速機ケース内の給油に常に浸漬されておらず、このため同ヘリカルスピードギヤ９とギヤ７との間に給油Ｆ0 が行われるものの、図６に示すように、このギヤ７のボス部８の基部側に段差ボス部７ａが形成され、段差ボス部７ａは同ギヤ７の歯元径Ｄ0 より小径Ｄ1 の位置に形成されて間隔ｔが形成されているが、Ｄ0 ＞Ｄ1 であることから、給油Ｆ0 を歯元部７ｂ側に充分に行うことができず、このため内径部より歯元部側に貫通して給油する油孔１２を設ける手段が成されたが、この油孔１２の形成はギヤの強度に影響を与える問題があるとともに、加工に手数を要しコスト高となる問題点があった。
【０００４】
【課題を解決するための手段】
本発明は、上記技術課題を解決するため、ギヤに対する給油を十分にすることができる潤滑構造を提供することを目的とし、第１の要旨は、シャフトのスプライン部に嵌合されたシンクロハブの外スプライン部にスライド可能に外嵌されたカップリングスリーブと、シャフトに外嵌されたヘリカルスピードギヤのボス部に一体状に取付けられたクラッチギヤと、このクラッチギヤのコーン部に回転可能に外嵌されてカップリングスリーブと係脱可能に連繋されるシンクロナイザーリングとからなる同期機構を備えた手動変速機において、前記ヘリカルスピードギヤの近傍の給油に常に浸漬されていないねじれ角を有する歯形部が形成されたギヤの回転方向に対して歯形部が前傾した前傾端側に、該ギヤの歯元径と略同径の給油受け部を設ける構成とした手動変速機の潤滑構造である。
また、第２の要旨は、前記給油受け部に凹状の油溜り部を設ける構成とした手動変速機の潤滑構造である。
また、第３の要旨は、シャフトのスプライン部に嵌合されたシンクロハブの外スプライン部にスライド可能に外嵌されたカップリングスリーブと、シャフトに外嵌されたヘリカルスピードギヤのボス部に一体状に取付けられたクラッチギヤと、このクラッチギヤのコーン部に回転可能に外嵌されてカップリングスリーブと係脱可能に連繋されるシンクロナイザーリングとからなる同期機構を備えた手動変速機において、前記ヘリカルスピードギヤの近傍の給油に常に浸漬されていないねじれ角を有する歯形部が形成されたギヤの回転方向に対して歯形部が前傾した前傾端側に、小径端部の径が前記ギヤの歯元径と略同径の断面略円錐形状の給油受け部材を前記ギヤとは別体に付設する構成とした手動変速機の潤滑構造である。
【０００５】
【作用】
上記構成としたことにより、ギヤへの潤滑を円滑に行うことができてその摩耗を著減できる。
【０００６】
【実施例】
次に、本発明の一実施例を図面にしたがって説明すると、図１は変速機１の一部断面図を示すもので、従来と同様に、シャフト２のスプライン部３にはシンクロナイザーハブ４が嵌合され、このシンクロナイザーハブ４の外周に形成されたスプライン部５にはカップリングスリーブ６がスライド可能に外嵌されている。また、このシャフト２にヘリカルスピードギヤ９が回転可能に外嵌され、さらに、このヘリカルスピードギヤ９のボス部９ａにはクラッチギヤ１０が一体固定状に外嵌されている。また、このクラッチギヤ１０のコーン部１０ａにはシンクロナイザーリング１１が外嵌されてカップリングスリーブ６と係脱可能に設けられている。このように設けられたシャフト２側において、ギヤ１７は以下のように形成されている。
【０００７】
すなわち、このギヤ１７はシャフト２に一体状に取付けられ、ヘリカルスピードギヤ９を回転可能に支承するボス部１８を一体に有するとともに、このボス部１８の基部には、従来とは異なり段差ボス部７ａに代わり円筒形状の給油受け部１９が形成されている。この給油受け部１９は従来の段差ボス部７ａと同様の幅寸法を有し、その外径Ｄ2 はギヤ１７の歯元径Ｄ0 とほぼ同径に形成されている。なお、この給油受け部１９は図２に示すように、ギヤ１７の回転方向Ｐに対する歯形部の前傾端１７ａ側に形成されている。
【０００８】
このように形成されたギヤ１７においては、その回転方向Ｐに対する歯形部の前傾端１７ａ側に給油受け部１９を設けたものであるから、この円筒形状の給油受け部１９に給油されるため、給油はギヤ１７の回転力と歯形部のねじれ角との関係で、遠心力によりはね飛ばされることなく前傾端１７ａ側から後傾端１７ｂ側に吸い込まれて潤滑され、歯面の摩耗を防止することができるとともに、その強度を維持することができる。
【０００９】
また、図３に示すものは給油受け部１９の変更例を示すもので、同給油受け部１９の外周面に湾曲形状の油溜り部２２を凹設したもので、この油溜り部２２に給油Ｆ0 することで、ギヤ１７の回転力と歯形部のねじれ角との関係で前傾端１７ａ側から後傾端１７ｂ側に潤滑され、歯面の摩耗を防止することができる。
【００１０】
また、図４に示すものは、ギヤ１７に他の態様の給油受け部材２０をスナップリング等で付設したもので、図示のように断面略円錐形状のリング状に形成され、その小径端部２１の径Ｄ3 はギヤ１７の歯元径Ｄ0 とほぼ同径に形成されている。このように形成された給油受け部材２０をギヤ１７の回転方向Ｐに対する歯形部の前傾端１７ａ側に取付けることにより、この給油受け部材２０に給油Ｆ0 することにより、ギヤ１７の回転力と歯形部のねじれ角との関係で前傾端１７ａ側から後傾端１７ｂ側に潤滑され、歯面の摩耗を防止することができる。
【００１１】
【発明の効果】
このようにギヤに給油受け部を、あるいはこの給油受け部に凹状の油溜り部、さらには、別体の略円錐形状の給油受け部材を付設する構成としたことにより、潤滑油は障壁なくギヤ側へ導かれ、ギヤ側へ導かれた潤滑油は、ギヤの回転力と歯形部のねじれ角との関係で遠心力によりはね飛ばされることなく前傾端側から後傾端側に吸い込まれて、ねじれ角を有する歯形部の歯面を満遍なく潤滑することができ、ギヤの内径部より歯元部側に貫通して給油する油孔を設ける場合に比してギヤの強度を低下させることなく、歯面の摩耗を防止することができる。
【図面の簡単な説明】
【図１】手動変速機の同期機構の一部断面図である。
【図２】ギヤの平面図である。
【図３】給油受け部の他の態様の断面図である。
【図４】同じく給油受け部の他の態様の断面図である。
【図５】従来の手動変速機の同期機構の一部断面図である。
【図６】従来の給油手段の断面図である。
【符号の説明】
２ シャフト
３ スプライン部
４ シンクロナイザーハブ
５ スプライン部
６ カップリングスリーブ
９ ヘリカルスピードギヤ
１０ クラッチギヤ
１０ａ コーン部
１１ シンクロナイザーリング
１７ ギヤ
１７ａ 前傾端
１７ｂ 後傾端
１９ 給油受け部
２０ 給油受け部材
２２ 油溜り部[0001]
[Industrial applications]
The present invention relates to a manual transmission, and more particularly, to a lubrication structure for a helical speed gear of a transmission.
[0002]
[Prior art]
Conventionally, in this type of manual transmission 1, as shown in FIG. 5, a synchronizer hub 4 is fitted to a spline portion 3 of a shaft 2, and the spline portion 5 formed on the outer periphery of the synchronizer hub 4 The coupling sleeve 6 is slidably fitted outside. A helical speed gear 9 is rotatably fitted on the shaft 2, and a clutch gear 10 is fixedly fitted on a boss 9 a of the helical speed gear 9. A synchronizer ring 11 is externally fitted to the cone portion 10 a of the clutch gear 10, and is provided so as to be detachable from the coupling sleeve 6.
[0003]
[Problems to be solved by the invention]
However, since the shaft 2 is rotatably supported on the upper side of the case of the transmission 1, for example, the periphery of the helical speed gear 9 is not always immersed in the oil in the transmission case. Although oil supply F0 is performed between the helical speed gear 9 and the gear 7, as shown in FIG. 6, a step boss 7a is formed on the base side of the boss 8 of the gear 7, and the step boss 7a is Although the interval t is formed at a position smaller than the root diameter D0 of the gear 7 and is smaller than the root diameter D0, since D0> D1, lubrication F0 cannot be sufficiently supplied to the root 7b side. For this reason, means for providing an oil hole 12 that penetrates from the inner diameter portion to the root portion side to supply oil has been provided. However, the formation of the oil hole 12 has a problem of affecting the strength of the gear, and also requires time and effort for machining. There was a problem that cost was high
[0004]
[Means for Solving the Problems]
An object of the present invention is to provide a lubricating structure capable of providing sufficient lubrication to gears in order to solve the above technical problem, and a first gist of the present invention is to provide a synchro hub fitted to a spline portion of a shaft. A coupling sleeve slidably fitted on the outer spline portion, a clutch gear integrally mounted on the boss portion of the helical speed gear fitted on the shaft, and a clutch gear rotatably fitted on the cone portion of the clutch gear. In a manual transmission equipped with a synchronization mechanism comprising a synchronizer ring fitted and detachably connected to a coupling sleeve , a tooth profile portion having a twist angle that is not always immersed in lubrication near the helical speed gear tooth portion in傾端side before tilted forward, providing a refueling receptacle of the dedendum diameter substantially the same diameter of the gear with respect to the rotation direction of the gear but formed A lubrication structure for the the manual transmission.
A second aspect is a lubrication structure for a manual transmission having a configuration in which a concave oil reservoir is provided in the oil supply receiver.
The third gist is that the coupling sleeve slidably fitted on the outer spline portion of the synchro hub fitted on the spline portion of the shaft, and the boss portion of the helical speed gear fitted on the shaft. In a manual transmission having a synchronization mechanism comprising a clutch gear mounted in a shape and a synchronizer ring rotatably fitted to a cone portion of the clutch gear and removably connected to the coupling sleeve, The diameter of the small-diameter end portion is on the forward inclined end side where the tooth profile portion is inclined forward with respect to the rotation direction of the gear in which the tooth profile portion having a torsion angle that is not always immersed in the oil supply near the helical speed gear is formed. A lubrication structure for a manual transmission in which a lubrication receiving member having a substantially conical cross section having substantially the same diameter as the gear root diameter is provided separately from the gear .
[0005]
[Action]
With the above configuration, lubrication of the gears can be performed smoothly and wear thereof can be significantly reduced.
[0006]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a partial cross-sectional view of a transmission 1, and a synchronizer hub 4 is provided on a spline portion 3 of a shaft 2 as in the related art. The coupling sleeve 6 is slidably fitted to the spline portion 5 formed on the outer periphery of the synchronizer hub 4 so as to be slidable. A helical speed gear 9 is rotatably fitted on the shaft 2, and a clutch gear 10 is fitted on the boss 9 a of the helical speed gear 9 so as to be integrally fixed. A synchronizer ring 11 is externally fitted to the cone portion 10 a of the clutch gear 10, and is provided so as to be detachable from the coupling sleeve 6. On the shaft 2 provided in this way, the gear 17 is formed as follows.
[0007]
That is, the gear 17 is integrally attached to the shaft 2 and integrally has a boss 18 for rotatably supporting the helical speed gear 9, and the base of the boss 18 has a stepped boss unlike a conventional one. A cylindrical oil supply receiving portion 19 is formed instead of 7a. The lubrication receiving portion 19 has the same width dimension as the conventional step boss portion 7a, and its outer diameter D2 is formed to be substantially the same as the root diameter D0 of the gear 17. As shown in FIG. 2, the refueling receiving portion 19 is formed on the front inclined end 17a side of the tooth profile with respect to the rotation direction P of the gear 17.
[0008]
In the gear 17 formed as described above, since the oil supply receiving portion 19 is provided on the forward inclined end 17a side of the tooth profile portion with respect to the rotation direction P, the oil is supplied to the cylindrical oil supply receiving portion 19. Due to the relationship between the rotational force of the gear 17 and the torsion angle of the tooth profile, the lubrication is sucked from the front inclined end 17a to the rear inclined end 17b without lubrication by centrifugal force and lubricated. Can be prevented, and the strength can be maintained.
[0009]
FIG. 3 shows a modified example of the oil receiving portion 19 in which a curved oil reservoir 22 is recessed on the outer peripheral surface of the oil receiving portion 19. By performing F0, lubrication is performed from the forward inclined end 17a side to the rear inclined end 17b side due to the relationship between the rotational force of the gear 17 and the torsion angle of the tooth profile, and wear on the tooth surface can be prevented.
[0010]
4 shows a gear 17 in which a lubrication receiving member 20 of another mode is attached by a snap ring or the like, and is formed in a ring shape having a substantially conical cross section as shown in FIG. The diameter D3 of the gear 17 is substantially the same as the root diameter D0 of the gear 17. The lubrication receiving member 20 thus formed is mounted on the front inclined end 17a side of the tooth profile with respect to the rotation direction P of the gear 17, so that the lubrication receiving member 20 is lubricated with F0. Due to the relationship with the torsion angle of the portion, the lubrication is performed from the forward inclined end 17a side to the backward inclined end 17b side, and wear on the tooth surface can be prevented.
[0011]
【The invention's effect】
Thus the oil receiving portion to the gear, or the concave of the oil reservoir to the oil supply receiving unit, further, with the construction in which attached refueling receiving member substantially conical separate, lubricating oil barrier without gear The lubricating oil guided to the gear side and the gear side is sucked from the forward inclined end to the backward inclined end without being repelled by centrifugal force due to the relationship between the rotational force of the gear and the torsion angle of the tooth profile. Therefore, it is possible to evenly lubricate the tooth surface of the tooth profile having a torsion angle, and reduce the strength of the gear as compared with the case where an oil hole is provided to penetrate from the inner diameter of the gear to the root of the gear to supply oil. Therefore, wear of the tooth surface can be prevented.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a synchronization mechanism of a manual transmission.
FIG. 2 is a plan view of a gear.
FIG. 3 is a cross-sectional view of another mode of the refueling receiving portion.
FIG. 4 is a cross-sectional view of another mode of the oil supply receiving unit.
FIG. 5 is a partial cross-sectional view of a synchronization mechanism of a conventional manual transmission.
FIG. 6 is a cross-sectional view of a conventional oil supply means.
[Explanation of symbols]
2 Shaft 3 Spline section 4 Synchronizer hub 5 Spline section 6 Coupling sleeve 9 Helical speed gear 10 Clutch gear 10a Cone section 11 Synchronizer ring 17 Gear 17a Forward inclined end 17b Rear inclined end 19 Oil receiving section 20 Oil receiving member 22 Oil Pool

Claims (3)

シャフトのスプライン部に嵌合されたシンクロハブの外スプライン部にスライド可能に外嵌されたカップリングスリーブと、シャフトに外嵌されたヘリカルスピードギヤのボス部に一体状に取付けられたクラッチギヤと、このクラッチギヤのコーン部に回転可能に外嵌されてカップリングスリーブと係脱可能に連繋されるシンクロナイザーリングとからなる同期機構を備えた手動変速機において、前記ヘリカルスピードギヤの近傍の給油に常に浸漬されていないねじれ角を有する歯形部が形成されたギヤの回転方向に対して歯形部が前傾した前傾端側に、該ギヤの歯元径と略同径の給油受け部を設ける構成とした手動変速機の潤滑構造。A coupling sleeve slidably fitted to the outer spline portion of the synchro hub fitted to the spline portion of the shaft, and a clutch gear integrally attached to the boss portion of the helical speed gear fitted to the shaft. A manual transmission having a synchronizing mechanism comprising a synchronizer ring rotatably fitted to the cone portion of the clutch gear and removably connected to the coupling sleeve. A lubrication receiving portion having a diameter substantially equal to the root diameter of the gear is provided on the forward inclined end side where the tooth profile is inclined forward with respect to the rotation direction of the gear in which the tooth profile having a torsion angle that is not always immersed in the gear is formed. A lubrication structure for a manual transmission that is provided. 前記給油受け部に凹状の油溜り部を設ける構成とした請求項１の手動変速機の潤滑構造。The lubricating structure of a manual transmission according to claim 1, wherein a concave oil reservoir is provided in the oil supply receiver. シャフトのスプライン部に嵌合されたシンクロハブの外スプライン部にスライド可能に外嵌されたカップリングスリーブと、シャフトに外嵌されたヘリカルスピードギヤのボス部に一体状に取付けられたクラッチギヤと、このクラッチギヤのコーン部に回転可能に外嵌されてカップリングスリーブと係脱可能に連繋されるシンクロナイザーリングとからなる同期機構を備えた手動変速機において、前記ヘリカルスピードギヤの近傍の給油に常に浸漬されていないねじれ角を有する歯形部が形成されたギヤの回転方向に対して歯形部が前傾した前傾端側に、小径端部の径が前記ギヤの歯元径と略同径の断面略円錐形状の給油受け部材を前記ギヤとは別体に付設する構成とした手動変速機の潤滑構造。A coupling sleeve slidably fitted to the outer spline portion of the synchro hub fitted to the spline portion of the shaft, and a clutch gear integrally attached to the boss portion of the helical speed gear fitted to the shaft. A manual transmission having a synchronizing mechanism comprising a synchronizer ring rotatably fitted to the cone portion of the clutch gear and removably connected to the coupling sleeve. The diameter of the small-diameter end is substantially the same as the tooth root diameter of the gear at the forward inclined end side where the tooth profile is inclined forward with respect to the rotation direction of the gear having the tooth profile having a twist angle that is not always immersed in the gear. A lubrication structure for a manual transmission, wherein a lubrication receiving member having a substantially conical cross section in diameter is provided separately from the gear .
JP14545795A 1995-05-18 1995-05-18 Lubrication structure for manual transmission Expired - Fee Related JP3590915B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14545795A JP3590915B2 (en) 1995-05-18 1995-05-18 Lubrication structure for manual transmission

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Application Number Priority Date Filing Date Title
JP14545795A JP3590915B2 (en) 1995-05-18 1995-05-18 Lubrication structure for manual transmission

Publications (2)

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JPH08312762A JPH08312762A (en) 1996-11-26
JP3590915B2 true JP3590915B2 (en) 2004-11-17

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KR100483154B1 (en) * 2002-07-30 2005-04-14 현대자동차주식회사 Synchronizer for Manual Transmission

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