JP2000199552A5 - - Google Patents

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Publication number
JP2000199552A5
JP2000199552A5 JP1999000287A JP28799A JP2000199552A5 JP 2000199552 A5 JP2000199552 A5 JP 2000199552A5 JP 1999000287 A JP1999000287 A JP 1999000287A JP 28799 A JP28799 A JP 28799A JP 2000199552 A5 JP2000199552 A5 JP 2000199552A5
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JP
Japan
Prior art keywords
traction
oil
continuously variable
toroidal continuously
variable transmission
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Pending
Application number
JP1999000287A
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Japanese (ja)
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JP2000199552A (en
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Publication date
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Priority to JP28799A priority Critical patent/JP2000199552A/en
Priority claimed from JP28799A external-priority patent/JP2000199552A/en
Publication of JP2000199552A publication Critical patent/JP2000199552A/en
Publication of JP2000199552A5 publication Critical patent/JP2000199552A5/ja
Pending legal-status Critical Current

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Description

この様な各幾何学的パラメータに就いて規定した刊行物として、実開昭62−158250号公報、特公平6−72653号公報に記載されたものが知られている。このうちの実開昭62−158250号公報には、上記半頂角θ0 を52.5〜65度にする事が、特公平6−72653号公報には、k0 ≧0.6、θ0 ≧50度、|ωsp/ω1 |≦0.3とする事が、それぞれ記載されている。尚、ωspは、上記各ディスク2、4の内側面2a、4aと上記各周面8a、8aとのトラクション接触部に存在する接触楕円のスピン角速度であり、ω1 は、上記入力側ディスク2の回転角速度である。ハーフトロイダル型無段変速機の幾何学的パラメータを、上述の様な範囲に規制する事により、パワーローラ8、8を支承するスラストベアリングの耐久性を確保すると共に、ハーフトロイダル型無段変速機の伝達効率を確保するとしている。 As publications that specify each of these geometric parameters, those described in Japanese Patent Publication No. 62-158250 and Japanese Patent Publication No. 6-72653 are known. Of these, in the publication No. 62-158250, the half apex angle θ 0 is set to 52.5 to 65 degrees, and in the publication No. 6-72653 , k 0 ≧ 0.6, θ. It is described that 0 ≧ 50 degrees and | ω sp / ω 1 | ≦ 0.3, respectively. Note that ω sp is the spin angular velocity of the contact ellipse existing at the traction contact portion between the inner side surfaces 2a and 4a of the disks 2 and 4 and the peripheral surfaces 8a and 8a, and ω 1 is the input side disk. It is a rotation angular velocity of 2. By restricting the geometric parameters of the half toroidal continuously variable transmission to the above range, the durability of the thrust bearings that support the power rollers 8 and 8 is ensured, and the half toroidal continuously variable transmission is used. It is said that the transmission efficiency of the

又、特公平6−72653号公報に記載された発明の場合には、ケーシング35(図4)内に貯溜して上記トラクション接触部の潤滑を行なわせる潤滑油として、無添加タービン油を用いる事を前提としている。ところが、ハーフトロイダル型無段変速機の様なトラクションドライブ装置にタービン油等の鉱油を用いると、大きな伝達容量を得る事ができない。即ち、例えば出光興産株式会社が発行している「出光トライボレビューNo.12−1986」に記載されている様に、トラクション接触部での伝達効率に影響するトラクション係数(μ)は油種によって異なり、タービン油等の鉱油は、トラクションドライブ専用に開発された合成油であるトラクションオイルの半分以下のトラクション係数しかない。これは、同一の接触押付力の下では、鉱油を使用した場合にはトラクションオイルを使用した場合の半分以下の動力しか伝えられない事を意味する。従って、潤滑油として鉱油を使用した場合には、自動車用の変速機の様に限られた設置空間に組み付ける必要があるハーフトロイダル型無段変速機では、大きな動力を伝える事ができない。
本発明は、この様な事情に鑑みて、優れた耐久性を確保し、且つ、より大きな動力伝達が可能な、優れた伝達効率を有するハーフトロイダル型無段変速機を実現すべく発明したものである。
Further, in the case of the invention described in Japanese Patent Publication No. 6-72653 , additive-free turbine oil should be used as the lubricating oil that is stored in the casing 35 (FIG. 4) to lubricate the traction contact portion. Is assumed. However, when mineral oil such as turbine oil is used for a traction drive device such as a half toroidal continuously variable transmission, a large transmission capacity cannot be obtained. That is, for example, as described in "Idemitsu Tribo Review No. 12-1986" published by Idemitsu Kosan Co., Ltd., the traction coefficient (μ) that affects the transmission efficiency at the traction contact portion differs depending on the oil type. Mineral oils such as turbine oils have a traction coefficient of less than half that of traction oils, which are synthetic oils developed exclusively for traction drives. This means that under the same contact pressing force, when mineral oil is used, less than half the power is transmitted when traction oil is used. Therefore, when mineral oil is used as the lubricating oil, a large power cannot be transmitted by a half toroidal continuously variable transmission that needs to be assembled in a limited installation space such as a transmission for automobiles.
In view of these circumstances, the present invention has been invented to realize a half-toroidal continuously variable transmission having excellent transmission efficiency, which can secure excellent durability and can transmit larger power. Is.

JP28799A 1999-01-05 1999-01-05 Half toroidal type continuously variable transmission Pending JP2000199552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28799A JP2000199552A (en) 1999-01-05 1999-01-05 Half toroidal type continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28799A JP2000199552A (en) 1999-01-05 1999-01-05 Half toroidal type continuously variable transmission

Publications (2)

Publication Number Publication Date
JP2000199552A JP2000199552A (en) 2000-07-18
JP2000199552A5 true JP2000199552A5 (en) 2005-08-04

Family

ID=11469701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28799A Pending JP2000199552A (en) 1999-01-05 1999-01-05 Half toroidal type continuously variable transmission

Country Status (1)

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JP (1) JP2000199552A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3498909B2 (en) * 2000-08-09 2004-02-23 日産自動車株式会社 Toroidal type continuously variable transmission
GB2395759A (en) * 2002-04-10 2004-06-02 Perry Forbes G D Rolling traction epicyclic
JP2004084778A (en) 2002-08-27 2004-03-18 Nissan Motor Co Ltd Toroidal continuously variable transmission
CN104776180B (en) * 2015-04-02 2017-08-04 四川大学 One kind is without spin variable speed unit
CN107339385B (en) * 2016-10-31 2023-08-15 西华大学 Spin-free single-ring disc type stepless speed change unit

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