WO2015169991A1 - Sistema axial de transmisión - Google Patents
Sistema axial de transmisión Download PDFInfo
- Publication number
- WO2015169991A1 WO2015169991A1 PCT/ES2015/070350 ES2015070350W WO2015169991A1 WO 2015169991 A1 WO2015169991 A1 WO 2015169991A1 ES 2015070350 W ES2015070350 W ES 2015070350W WO 2015169991 A1 WO2015169991 A1 WO 2015169991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulley
- masses
- transmission system
- output shaft
- housings
- 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.)
- Ceased
Links
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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
- F16H55/563—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable actuated by centrifugal masses
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0487—Friction gearings
- F16H57/0489—Friction gearings with endless flexible members, e.g. belt CVTs
-
- 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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/24—Automatic clutches actuated entirely mechanically controlled by acceleration or deceleration of angular speed
Definitions
- the present invention relates to a device that has been specially designed to constitute an axial transmission system that significantly improves the performance of current speed drives.
- the object of the invention is to provide an inertial axial transmission system in which there is an exponential speed variation as a function of the displacement caused by the inertia of the device and which has a structure that avoids the loss of performance due to displacements of some of its internal parts due to said inertial effect in directions that do not provide functionality to the device.
- the invention is applicable in the field of transmissions for engines with automatic transmission, whether two or four times, although it is equally applicable in other areas, such as automatic transmission systems, including electric vehicles and bicycles.
- variable speed devices such as cam drives, roller drives, or ball drives are known, all of which present as a common denominator the great difficulty of setting up the transmission of the transmission. engine.
- a speed variator is described in the invention patent P200003019 transverse, conceived for any automatic motor, which is materialized in a variable pulley for V-belts, in which two smooth frustoconical discs participate, among which a throat is determined, in which a V-belt is directly applied, with a discoidal plate, the whole assembly being coaxially and jointly mounted to the axis of rotation of a motor shaft, the discoid plate and a first disk being fixed and a second mobile disk being in the axial direction of the tree due to its own inertia.
- the device defines a variable pulley through means of displacement of the mobile disk, adapted to gradually bring the latter closer to the fixed disk as the speed of rotation of the assembly increases, decreasing the width of the pulley throat and consequently increasing the primitive diameter of the pulley, and vice versa, with which the effective radius on which the transmission torque is applied varies, and consequently the speed on the element acting on the other end of said belt.
- the axial displacement means are constituted by multiple masses or sliders arranged with their axes inclined a few degrees with respect to the motor shaft and axially displaceable with respect to the latter, radially and uniformly distributed, housed in machined holes on the outer face of the mobile disk facing the discoid plate and enclosed between the mobile disk and the discoid plate; all of which is adapted so that, for a zero or low rotation speed of the assembly, the sliders are totally inside their holes and the mobile disk in its position furthest from the fixed disk, moving from the inside of its holes towards the discoid plate, according to the speed of rotation, and pushing the mobile disk towards the fixed disk, which shortens the distance between the two discs and decreases the width of the pulley throat, increasing the primitive diameter of the pulley .
- the masses have a cylindrical configuration, which allows them to rotate in their housings, making an angular or rotational displacement that supposes a Energy wasted
- this possibility of rotation of the movable masses determines that they are sharpened, forming a point that hinders their displacement on the discoid plate.
- Another drawback of this device is determined by the strong friction caused during its operation, which has a negative impact on its durability and excessive heating.
- the tractor wheel is associated with a pulley with a certain profile, and consequently invariable, so that the radius of action of the belt on said pulley is always the same, so that the torque that must be overcome to initially move the wheel is significantly greater than when it is in motion, so it would be desirable to have means to regulate the radius of action of the belt on the tractor wheel depending on the angular speed to which it moves.
- the axial transmission system proposed by the invention is of the type described in the preamble of claim 1 and comprising: - a driving pulley provided with a fixed plate integral with a drive shaft and an axially movable mobile plate along a section of the driving axle and presenting on an external face of a series of housings in which masses are housed, inertially movable against a curved bell that rotates in solidarity with the driving axle; - a driven pulley provided with a fixed plate integral to an output shaft, and a mobile plate provided with means of displacement, in axial direction, by its own inertia with respect to the output axis; and - a belt that relates in the rotation to the driving and driven pulleys.
- This system has characteristics aimed at resolving a series of problems in a fully satisfactory manner, thanks to a highly effective novel structure, which affects both the drive pulley associated with a drive shaft or crankshaft or drive shaft, as well as the driven, associated pulley to an output shaft, achieving a greater reduction in starting torque, and higher speeds when the system is in motion, which results in greater acceleration and optimal use of the energy supplied to the drive pulley.
- a feature of the invention is that the housings and movable masses of the drive pulley have a non-cylindrical configuration defining guide means of said masses in the axial direction, so that they are unable to rotate in the interior of the respective accommodations.
- the non-cylindrical configuration of the housings and the respective inertially movable masses prevents said doughs from rotating inside the housings preventing them from being worn out on their periphery when contacting the bell counting by adopting the end of said doughs a pointed configuration.
- This system has characteristics oriented to prevent the working temperature of the drive pulley from being excessively increased due to the friction of the movable masses against the bell and to prevent the entry and accumulation of dirt to the area of contact with the masses. of said bell.
- the driving pulley comprises a fan inside the hood that helps the cooling of the system contributing to eliminate the heat produced by friction.
- the arrangement of this fan inside the hood, specifically between said hood and the movable plate of the drive pulley is ejected outwards any impurity that could access the space between the hood and the said movable plate of the drive pulley keeping the contact area of the movable mass with the bell clean.
- the movable plate of said driving pulley comprises on its front face perimeter cooling striations.
- the driven pulley has a fixed plate integral to an output shaft and a mobile plate provided with means of displacement in the axial direction and by its own inertia with respect to the output axis.
- These means for moving the driven plate of the driven pulley, in axial direction with respect to the output shaft comprise a tubular neck mounted on the output shaft, said tubular neck being provided with two groups of oblique grooves with different angles of inclination for optional insertion of some lugs of solidarity with the output shaft.
- the possibility of inserting the lugs in the oblique grooves of greater inclination or of less inclination allows the mobile plate of the driven pulley to move through its own inertia with respect to the sprockets, guided by the oblique grooves used in each case offering the system two corresponding working limit positions precisely with the upper and lower ends of said grooves so that in one of said boundary positions of the mobile plate the driven pulley provides a maximum radius for the belt support offering a high torque at low speeds; while in the other limit position of the movable plate the driven pulley provides a minimum radius for the support of the belt and consequently the maximum speed of rotation of the driven pulley and the output shaft.
- the number of grooves of the tubular neck is twice that of the number of attachable lugs in the output shaft so that the grooves of different inclination form two alternating or offset groups angularly to each other which allows the mounting of the lugs on the tubular neck of the driven plate of the driven pulley can be carried out in the group of slots of greater or lesser inclination in order to achieve a greater torque or a change in speed faster depending on the specific needs of each application.
- the movable plate of the driven pulley is assisted by an elastic element that tends to keep it in the position of maximum approximation to the fixed pulley of said driven pulley when the inertia of the rotation is not sufficient.
- FIG. 1 shows a plan view of an embodiment of the axial transmission system according to the invention in which the transmission belt has been sectioned to allow observation of the driving pulley and driven pulley.
- FIG. 2 shows an exploded perspective view of the drive pulley.
- FIG. 3 and 4 show partial elevational views of the drive pulley sectioned by a vertical plane and in which the movable plate has been represented in two extreme positions of displacement in the axial direction.
- FIG. 5 and 6 show elevational views of an example of embodiment of the driven pulley and in which the movable plate in two extreme positions of axial displacement with respect to the output axis have been represented.
- FIG. 7 shows a perspective view of the driven plate of the driven pulley, in which the two groups of grooves can be observed, with different inclination, defined in the tubular neck thereof.
- an embodiment of the system of the invention can be seen including a drive pulley (1) mounted on a drive shaft (10) driven in this case by a motor (M) and a pulley driven (2) mounted in this case on an output shaft (20), both pulley pulleys (1) being connected and driven (2) by a trapezoidal belt (3).
- the driving pulley (1) is constituted by a fixed plate (1 1) and a mobile plate (12) that allows axial displacement along the drive shaft (10), the driven pulley (2) also has a fixed plate ( 21) integral to the output shaft (20) and a movable plate (22) movable in axial direction by its own inertia with respect to the output shaft (20).
- the axial displacement of the mobile plates (12, 22) of the driving and driven pulleys allows the system to vary the speed ratio of the drive shaft (10) and the output shaft (20).
- the movable plate (12) of the driving pulley (1) has on its external face a series of housings (13) inclined in a divergent direction and in which respective masses are housed. (14) initially movable against a curved bell (4) that rotates in solidarity with the drive shaft (10) shown in Figures 3 and 4.
- the housings (13) and the masses (14) have a non-cylindrical configuration, in this case a trapezoidal section with its rounded edges and which end at its leading or protruding end in a rounded configuration as spherical cap that forms the contact surface with the inner surface of the hood (4).
- the masses (14) are protruding from the respective inertia of the respective housings (13) by contacting the inner surface of the bell (4) and causing, due to the inclined and divergent arrangement of said masses that the movable plate (12) approaches the fixed plate of the driving pulley (1).
- the driving pulley comprises inside the hood (4) a fan (15) for cooling the system and the expulsion outside of possible particles that access the space between the plate mobile (12) and the bell (4) keeping the contact area of the masses (14) clean with said bell (4).
- the movable plate (12) of the drive pulley (1) comprises on its outer face perimeter striations (16) to facilitate the dissipation of the heat generated by friction between the different associated parts. the same.
- the movable plate (12) of the driving pulley (1) is mounted with the interposition of a bushing (17) on a bolt (18) that has a titanium nitride treatment to obtain a high hardness and a low coefficient of friction during the axial displacement of said mobile plate.
- the driven pulley (2) mounted on an output shaft (20) and formed by a fixed plate (21) and a mobile plate (22) can be seen, which is arranged for mounting with possibility of axial displacement with respect to the output shaft (20) a tubular neck (23) provided with oblique grooves (24, 25) with different angles of inclination for optional insertion into one or other group of grooves of some studs (26) of solidarity with the output axis (20).
- the tubular neck (23) is removable and threadedly mounted on the movable plate (22) of the driven pulley (2).
- the movable plate (22) of the driven pulley (2) will be assisted by an elastic element such as a spring or the like, not shown, which tends to move it towards the fixed plate of the driven pulley.
- an elastic element such as a spring or the like, not shown, which tends to move it towards the fixed plate of the driven pulley.
- the movable plate (22) of the driven pulley (2) and the tubular neck (23) provided with two sets of grooves (24) alternated with different angles of inclination ( ⁇ , ⁇ ) can be seen.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Pulleys (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES15788808T ES2811903T3 (es) | 2014-05-09 | 2015-04-28 | Sistema axial de transmisión |
| JP2016567537A JP6568543B2 (ja) | 2014-05-09 | 2015-04-28 | 軸方向伝動システム |
| BR112016026237-9A BR112016026237B1 (pt) | 2014-05-09 | 2015-04-28 | Sistema axial de transmissão |
| CN201580036087.0A CN106662235B (zh) | 2014-05-09 | 2015-04-28 | 轴向传送系统 |
| EP15788808.2A EP3141778B1 (en) | 2014-05-09 | 2015-04-28 | Axial transmission system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201430682A ES2491440B1 (es) | 2014-05-09 | 2014-05-09 | Sistema axial de transmisión |
| ESP201430682 | 2014-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015169991A1 true WO2015169991A1 (es) | 2015-11-12 |
Family
ID=51452830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2015/070350 Ceased WO2015169991A1 (es) | 2014-05-09 | 2015-04-28 | Sistema axial de transmisión |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3141778B1 (es) |
| JP (1) | JP6568543B2 (es) |
| CN (1) | CN106662235B (es) |
| BR (1) | BR112016026237B1 (es) |
| ES (2) | ES2491440B1 (es) |
| WO (1) | WO2015169991A1 (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022534972A (ja) * | 2019-05-27 | 2022-08-04 | イェシル コンプレサー クリマ タサリム イマラト サナイ ヴェ ティジャーレット リミテッド シルケティ | 自転車のためのcvt自動バリエータ変速機 |
| CN111779805B (zh) * | 2020-07-10 | 2023-08-25 | 隆鑫通用动力股份有限公司 | 变速器从动盘及变速器 |
| WO2025100589A1 (ko) * | 2023-11-08 | 2025-05-15 | 엘지전자 주식회사 | 디스플레이 디바이스 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101924A (en) * | 1989-07-13 | 1992-04-07 | Honda Giken Kogyo Kabushiki Kaisha | Electric motor driven vehicle and power unit thereof |
| ES2222052A1 (es) * | 2000-12-18 | 2005-01-16 | Juan Costa Pujadas | Variador transversal. |
| US20070105670A1 (en) * | 2005-11-07 | 2007-05-10 | Yamaha Hatsudoki Kabushiki Kaisha | Straddle-type vehicle |
| ES1069285U (es) * | 2008-11-26 | 2009-03-01 | Joan Costa Pujadas | Variador de velocidad con lubricacion en seco. |
| WO2009096385A1 (ja) * | 2008-01-31 | 2009-08-06 | Honda Motor Co., Ltd. | パワーユニット |
| EP2522872A1 (en) * | 2011-05-12 | 2012-11-14 | Catai S.r.l. | Friction-disc clutch with centrifugal engagement/disengagement |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116582B2 (es) * | 1972-12-12 | 1976-05-25 | ||
| JPS5635564Y2 (es) * | 1974-06-07 | 1981-08-21 | ||
| FR2502720B1 (fr) * | 1981-03-24 | 1985-10-04 | Motobecane Ateliers | Double variateur de vitesse |
| FR2519109B1 (es) * | 1981-12-29 | 1988-08-26 | Honda Motor Co Ltd | |
| JPS62118149A (ja) * | 1985-11-15 | 1987-05-29 | Honda Motor Co Ltd | Vベルト無段変速機 |
| JPH05332411A (ja) * | 1992-05-29 | 1993-12-14 | Suzuki Motor Corp | Vベルト自動変速機のドライブvプーリ |
| JP4293796B2 (ja) * | 2003-01-31 | 2009-07-08 | ヤマハ発動機株式会社 | Vベルト式無段変速機の冷却構造 |
| TWI225912B (en) * | 2003-09-12 | 2005-01-01 | Ind Tech Res Inst | The mechanism for reverse gear of a belt-type continuously variable transmission |
| ITAN20080017A1 (it) * | 2008-04-14 | 2009-10-15 | Claudio Luzi | Dispositivo variatore di velocita' |
-
2014
- 2014-05-09 ES ES201430682A patent/ES2491440B1/es active Active
-
2015
- 2015-04-28 JP JP2016567537A patent/JP6568543B2/ja active Active
- 2015-04-28 WO PCT/ES2015/070350 patent/WO2015169991A1/es not_active Ceased
- 2015-04-28 ES ES15788808T patent/ES2811903T3/es active Active
- 2015-04-28 BR BR112016026237-9A patent/BR112016026237B1/pt active IP Right Grant
- 2015-04-28 EP EP15788808.2A patent/EP3141778B1/en active Active
- 2015-04-28 CN CN201580036087.0A patent/CN106662235B/zh active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101924A (en) * | 1989-07-13 | 1992-04-07 | Honda Giken Kogyo Kabushiki Kaisha | Electric motor driven vehicle and power unit thereof |
| ES2222052A1 (es) * | 2000-12-18 | 2005-01-16 | Juan Costa Pujadas | Variador transversal. |
| US20070105670A1 (en) * | 2005-11-07 | 2007-05-10 | Yamaha Hatsudoki Kabushiki Kaisha | Straddle-type vehicle |
| WO2009096385A1 (ja) * | 2008-01-31 | 2009-08-06 | Honda Motor Co., Ltd. | パワーユニット |
| ES1069285U (es) * | 2008-11-26 | 2009-03-01 | Joan Costa Pujadas | Variador de velocidad con lubricacion en seco. |
| EP2522872A1 (en) * | 2011-05-12 | 2012-11-14 | Catai S.r.l. | Friction-disc clutch with centrifugal engagement/disengagement |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3141778A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112016026237A2 (pt) | 2017-08-15 |
| CN106662235A (zh) | 2017-05-10 |
| ES2811903T3 (es) | 2021-03-15 |
| BR112016026237B1 (pt) | 2023-04-04 |
| EP3141778A4 (en) | 2018-02-21 |
| BR112016026237A8 (pt) | 2023-02-07 |
| ES2491440B1 (es) | 2015-05-25 |
| CN106662235B (zh) | 2020-06-30 |
| EP3141778A1 (en) | 2017-03-15 |
| JP6568543B2 (ja) | 2019-08-28 |
| EP3141778B1 (en) | 2020-06-03 |
| JP2017516040A (ja) | 2017-06-15 |
| ES2491440A1 (es) | 2014-09-05 |
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